| Message ID | 20171108094147.25854-5-m.szyprowski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Also warnings,
WARNING: please, no spaces at the start of a line
#2667: FILE: drivers/gpu/drm/exynos/exynos_drm_gsc.c:727:
+ struct drm_exynos_ipp_task_rect *src, struct drm_exynos_ipp_task_rect *dst)$
WARNING: line over 80 characters
#3098: FILE: drivers/gpu/drm/exynos/exynos_drm_gsc.c:1158:
+ DRM_EXYNOS_IPP_CAP_SCALE | DRM_EXYNOS_IPP_CAP_CONVERT,
WARNING: Missing a blank line after declarations
#3248: FILE: drivers/gpu/drm/exynos/exynos_drm_gsc.c:1308:
+ int ret = clk_prepare_enable(ctx->clocks[i]);
+ if (ret) {
Thanks,
Inki Dae
2017년 11월 08일 18:41에 Marek Szyprowski 이(가) 쓴 글:
> This patch adapts Exynos DRM GScaler driver to new IPP v2 core API.
> The side effect of this conversion is a switch to driver component API
> to register properly in the Exynos DRM core.
>
> During the conversion driver has been adapted to support more specific
> compatible strings to distinguish between Exynos5250 and Exynos5420
> (different hardware limits). Support for Exynos5433 variant
> has been added too (different limits table, removed dependency
> on ARCH_EXYNOS5).
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
> ---
> drivers/gpu/drm/exynos/Kconfig | 3 +-
> drivers/gpu/drm/exynos/exynos_drm_drv.c | 1 +
> drivers/gpu/drm/exynos/exynos_drm_gsc.c | 3199 ++++++++++++++-----------------
> drivers/gpu/drm/exynos/exynos_drm_gsc.h | 24 -
> 4 files changed, 1399 insertions(+), 1828 deletions(-)
> rewrite drivers/gpu/drm/exynos/exynos_drm_gsc.c (43%)
> delete mode 100644 drivers/gpu/drm/exynos/exynos_drm_gsc.h
>
> diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
> index c10c9ca0d8b4..9b66a9838dca 100644
> --- a/drivers/gpu/drm/exynos/Kconfig
> +++ b/drivers/gpu/drm/exynos/Kconfig
> @@ -111,7 +111,8 @@ config DRM_EXYNOS_ROTATOR
>
> config DRM_EXYNOS_GSC
> bool "GScaler"
> - depends on BROKEN && ARCH_EXYNOS5 && VIDEO_SAMSUNG_EXYNOS_GSC=n
> + depends on VIDEO_SAMSUNG_EXYNOS_GSC=n
> + select DRM_EXYNOS_IPP
> help
> Choose this option if you want to use Exynos GSC for DRM.
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> index 26d82bbd9080..72344b74387d 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> @@ -263,6 +263,7 @@ static struct exynos_drm_driver_info exynos_drm_drivers[] = {
> DRM_COMPONENT_DRIVER
> }, {
> DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
> + DRM_COMPONENT_DRIVER
> }, {
> &exynos_drm_platform_driver,
> DRM_VIRTUAL_DEVICE
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
> dissimilarity index 43%
> index 0506b2b17ac1..b6ab58429c1c 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
> @@ -1,1803 +1,1396 @@
> -/*
> - * Copyright (C) 2012 Samsung Electronics Co.Ltd
> - * Authors:
> - * Eunchul Kim <chulspro.kim@samsung.com>
> - * Jinyoung Jeon <jy0.jeon@samsung.com>
> - * Sangmin Lee <lsmin.lee@samsung.com>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License as published by the
> - * Free Software Foundation; either version 2 of the License, or (at your
> - * option) any later version.
> - *
> - */
> -#include <linux/kernel.h>
> -#include <linux/platform_device.h>
> -#include <linux/clk.h>
> -#include <linux/pm_runtime.h>
> -#include <linux/mfd/syscon.h>
> -#include <linux/regmap.h>
> -
> -#include <drm/drmP.h>
> -#include <drm/exynos_drm.h>
> -#include "regs-gsc.h"
> -#include "exynos_drm_drv.h"
> -#include "exynos_drm_ipp.h"
> -#include "exynos_drm_gsc.h"
> -
> -/*
> - * GSC stands for General SCaler and
> - * supports image scaler/rotator and input/output DMA operations.
> - * input DMA reads image data from the memory.
> - * output DMA writes image data to memory.
> - * GSC supports image rotation and image effect functions.
> - *
> - * M2M operation : supports crop/scale/rotation/csc so on.
> - * Memory ----> GSC H/W ----> Memory.
> - * Writeback operation : supports cloned screen with FIMD.
> - * FIMD ----> GSC H/W ----> Memory.
> - * Output operation : supports direct display using local path.
> - * Memory ----> GSC H/W ----> FIMD, Mixer.
> - */
> -
> -/*
> - * TODO
> - * 1. check suspend/resume api if needed.
> - * 2. need to check use case platform_device_id.
> - * 3. check src/dst size with, height.
> - * 4. added check_prepare api for right register.
> - * 5. need to add supported list in prop_list.
> - * 6. check prescaler/scaler optimization.
> - */
> -
> -#define GSC_MAX_DEVS 4
> -#define GSC_MAX_SRC 4
> -#define GSC_MAX_DST 16
> -#define GSC_RESET_TIMEOUT 50
> -#define GSC_BUF_STOP 1
> -#define GSC_BUF_START 2
> -#define GSC_REG_SZ 16
> -#define GSC_WIDTH_ITU_709 1280
> -#define GSC_SC_UP_MAX_RATIO 65536
> -#define GSC_SC_DOWN_RATIO_7_8 74898
> -#define GSC_SC_DOWN_RATIO_6_8 87381
> -#define GSC_SC_DOWN_RATIO_5_8 104857
> -#define GSC_SC_DOWN_RATIO_4_8 131072
> -#define GSC_SC_DOWN_RATIO_3_8 174762
> -#define GSC_SC_DOWN_RATIO_2_8 262144
> -#define GSC_REFRESH_MIN 12
> -#define GSC_REFRESH_MAX 60
> -#define GSC_CROP_MAX 8192
> -#define GSC_CROP_MIN 32
> -#define GSC_SCALE_MAX 4224
> -#define GSC_SCALE_MIN 32
> -#define GSC_COEF_RATIO 7
> -#define GSC_COEF_PHASE 9
> -#define GSC_COEF_ATTR 16
> -#define GSC_COEF_H_8T 8
> -#define GSC_COEF_V_4T 4
> -#define GSC_COEF_DEPTH 3
> -
> -#define get_gsc_context(dev) platform_get_drvdata(to_platform_device(dev))
> -#define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\
> - struct gsc_context, ippdrv);
> -#define gsc_read(offset) readl(ctx->regs + (offset))
> -#define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset))
> -
> -/*
> - * A structure of scaler.
> - *
> - * @range: narrow, wide.
> - * @pre_shfactor: pre sclaer shift factor.
> - * @pre_hratio: horizontal ratio of the prescaler.
> - * @pre_vratio: vertical ratio of the prescaler.
> - * @main_hratio: the main scaler's horizontal ratio.
> - * @main_vratio: the main scaler's vertical ratio.
> - */
> -struct gsc_scaler {
> - bool range;
> - u32 pre_shfactor;
> - u32 pre_hratio;
> - u32 pre_vratio;
> - unsigned long main_hratio;
> - unsigned long main_vratio;
> -};
> -
> -/*
> - * A structure of scaler capability.
> - *
> - * find user manual 49.2 features.
> - * @tile_w: tile mode or rotation width.
> - * @tile_h: tile mode or rotation height.
> - * @w: other cases width.
> - * @h: other cases height.
> - */
> -struct gsc_capability {
> - /* tile or rotation */
> - u32 tile_w;
> - u32 tile_h;
> - /* other cases */
> - u32 w;
> - u32 h;
> -};
> -
> -/*
> - * A structure of gsc context.
> - *
> - * @ippdrv: prepare initialization using ippdrv.
> - * @regs_res: register resources.
> - * @regs: memory mapped io registers.
> - * @sysreg: handle to SYSREG block regmap.
> - * @lock: locking of operations.
> - * @gsc_clk: gsc gate clock.
> - * @sc: scaler infomations.
> - * @id: gsc id.
> - * @irq: irq number.
> - * @rotation: supports rotation of src.
> - * @suspended: qos operations.
> - */
> -struct gsc_context {
> - struct exynos_drm_ippdrv ippdrv;
> - struct resource *regs_res;
> - void __iomem *regs;
> - struct regmap *sysreg;
> - struct mutex lock;
> - struct clk *gsc_clk;
> - struct gsc_scaler sc;
> - int id;
> - int irq;
> - bool rotation;
> - bool suspended;
> -};
> -
> -/* 8-tap Filter Coefficient */
> -static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = {
> - { /* Ratio <= 65536 (~8:8) */
> - { 0, 0, 0, 128, 0, 0, 0, 0 },
> - { -1, 2, -6, 127, 7, -2, 1, 0 },
> - { -1, 4, -12, 125, 16, -5, 1, 0 },
> - { -1, 5, -15, 120, 25, -8, 2, 0 },
> - { -1, 6, -18, 114, 35, -10, 3, -1 },
> - { -1, 6, -20, 107, 46, -13, 4, -1 },
> - { -2, 7, -21, 99, 57, -16, 5, -1 },
> - { -1, 6, -20, 89, 68, -18, 5, -1 },
> - { -1, 6, -20, 79, 79, -20, 6, -1 },
> - { -1, 5, -18, 68, 89, -20, 6, -1 },
> - { -1, 5, -16, 57, 99, -21, 7, -2 },
> - { -1, 4, -13, 46, 107, -20, 6, -1 },
> - { -1, 3, -10, 35, 114, -18, 6, -1 },
> - { 0, 2, -8, 25, 120, -15, 5, -1 },
> - { 0, 1, -5, 16, 125, -12, 4, -1 },
> - { 0, 1, -2, 7, 127, -6, 2, -1 }
> - }, { /* 65536 < Ratio <= 74898 (~8:7) */
> - { 3, -8, 14, 111, 13, -8, 3, 0 },
> - { 2, -6, 7, 112, 21, -10, 3, -1 },
> - { 2, -4, 1, 110, 28, -12, 4, -1 },
> - { 1, -2, -3, 106, 36, -13, 4, -1 },
> - { 1, -1, -7, 103, 44, -15, 4, -1 },
> - { 1, 1, -11, 97, 53, -16, 4, -1 },
> - { 0, 2, -13, 91, 61, -16, 4, -1 },
> - { 0, 3, -15, 85, 69, -17, 4, -1 },
> - { 0, 3, -16, 77, 77, -16, 3, 0 },
> - { -1, 4, -17, 69, 85, -15, 3, 0 },
> - { -1, 4, -16, 61, 91, -13, 2, 0 },
> - { -1, 4, -16, 53, 97, -11, 1, 1 },
> - { -1, 4, -15, 44, 103, -7, -1, 1 },
> - { -1, 4, -13, 36, 106, -3, -2, 1 },
> - { -1, 4, -12, 28, 110, 1, -4, 2 },
> - { -1, 3, -10, 21, 112, 7, -6, 2 }
> - }, { /* 74898 < Ratio <= 87381 (~8:6) */
> - { 2, -11, 25, 96, 25, -11, 2, 0 },
> - { 2, -10, 19, 96, 31, -12, 2, 0 },
> - { 2, -9, 14, 94, 37, -12, 2, 0 },
> - { 2, -8, 10, 92, 43, -12, 1, 0 },
> - { 2, -7, 5, 90, 49, -12, 1, 0 },
> - { 2, -5, 1, 86, 55, -12, 0, 1 },
> - { 2, -4, -2, 82, 61, -11, -1, 1 },
> - { 1, -3, -5, 77, 67, -9, -1, 1 },
> - { 1, -2, -7, 72, 72, -7, -2, 1 },
> - { 1, -1, -9, 67, 77, -5, -3, 1 },
> - { 1, -1, -11, 61, 82, -2, -4, 2 },
> - { 1, 0, -12, 55, 86, 1, -5, 2 },
> - { 0, 1, -12, 49, 90, 5, -7, 2 },
> - { 0, 1, -12, 43, 92, 10, -8, 2 },
> - { 0, 2, -12, 37, 94, 14, -9, 2 },
> - { 0, 2, -12, 31, 96, 19, -10, 2 }
> - }, { /* 87381 < Ratio <= 104857 (~8:5) */
> - { -1, -8, 33, 80, 33, -8, -1, 0 },
> - { -1, -8, 28, 80, 37, -7, -2, 1 },
> - { 0, -8, 24, 79, 41, -7, -2, 1 },
> - { 0, -8, 20, 78, 46, -6, -3, 1 },
> - { 0, -8, 16, 76, 50, -4, -3, 1 },
> - { 0, -7, 13, 74, 54, -3, -4, 1 },
> - { 1, -7, 10, 71, 58, -1, -5, 1 },
> - { 1, -6, 6, 68, 62, 1, -5, 1 },
> - { 1, -6, 4, 65, 65, 4, -6, 1 },
> - { 1, -5, 1, 62, 68, 6, -6, 1 },
> - { 1, -5, -1, 58, 71, 10, -7, 1 },
> - { 1, -4, -3, 54, 74, 13, -7, 0 },
> - { 1, -3, -4, 50, 76, 16, -8, 0 },
> - { 1, -3, -6, 46, 78, 20, -8, 0 },
> - { 1, -2, -7, 41, 79, 24, -8, 0 },
> - { 1, -2, -7, 37, 80, 28, -8, -1 }
> - }, { /* 104857 < Ratio <= 131072 (~8:4) */
> - { -3, 0, 35, 64, 35, 0, -3, 0 },
> - { -3, -1, 32, 64, 38, 1, -3, 0 },
> - { -2, -2, 29, 63, 41, 2, -3, 0 },
> - { -2, -3, 27, 63, 43, 4, -4, 0 },
> - { -2, -3, 24, 61, 46, 6, -4, 0 },
> - { -2, -3, 21, 60, 49, 7, -4, 0 },
> - { -1, -4, 19, 59, 51, 9, -4, -1 },
> - { -1, -4, 16, 57, 53, 12, -4, -1 },
> - { -1, -4, 14, 55, 55, 14, -4, -1 },
> - { -1, -4, 12, 53, 57, 16, -4, -1 },
> - { -1, -4, 9, 51, 59, 19, -4, -1 },
> - { 0, -4, 7, 49, 60, 21, -3, -2 },
> - { 0, -4, 6, 46, 61, 24, -3, -2 },
> - { 0, -4, 4, 43, 63, 27, -3, -2 },
> - { 0, -3, 2, 41, 63, 29, -2, -2 },
> - { 0, -3, 1, 38, 64, 32, -1, -3 }
> - }, { /* 131072 < Ratio <= 174762 (~8:3) */
> - { -1, 8, 33, 48, 33, 8, -1, 0 },
> - { -1, 7, 31, 49, 35, 9, -1, -1 },
> - { -1, 6, 30, 49, 36, 10, -1, -1 },
> - { -1, 5, 28, 48, 38, 12, -1, -1 },
> - { -1, 4, 26, 48, 39, 13, 0, -1 },
> - { -1, 3, 24, 47, 41, 15, 0, -1 },
> - { -1, 2, 23, 47, 42, 16, 0, -1 },
> - { -1, 2, 21, 45, 43, 18, 1, -1 },
> - { -1, 1, 19, 45, 45, 19, 1, -1 },
> - { -1, 1, 18, 43, 45, 21, 2, -1 },
> - { -1, 0, 16, 42, 47, 23, 2, -1 },
> - { -1, 0, 15, 41, 47, 24, 3, -1 },
> - { -1, 0, 13, 39, 48, 26, 4, -1 },
> - { -1, -1, 12, 38, 48, 28, 5, -1 },
> - { -1, -1, 10, 36, 49, 30, 6, -1 },
> - { -1, -1, 9, 35, 49, 31, 7, -1 }
> - }, { /* 174762 < Ratio <= 262144 (~8:2) */
> - { 2, 13, 30, 38, 30, 13, 2, 0 },
> - { 2, 12, 29, 38, 30, 14, 3, 0 },
> - { 2, 11, 28, 38, 31, 15, 3, 0 },
> - { 2, 10, 26, 38, 32, 16, 4, 0 },
> - { 1, 10, 26, 37, 33, 17, 4, 0 },
> - { 1, 9, 24, 37, 34, 18, 5, 0 },
> - { 1, 8, 24, 37, 34, 19, 5, 0 },
> - { 1, 7, 22, 36, 35, 20, 6, 1 },
> - { 1, 6, 21, 36, 36, 21, 6, 1 },
> - { 1, 6, 20, 35, 36, 22, 7, 1 },
> - { 0, 5, 19, 34, 37, 24, 8, 1 },
> - { 0, 5, 18, 34, 37, 24, 9, 1 },
> - { 0, 4, 17, 33, 37, 26, 10, 1 },
> - { 0, 4, 16, 32, 38, 26, 10, 2 },
> - { 0, 3, 15, 31, 38, 28, 11, 2 },
> - { 0, 3, 14, 30, 38, 29, 12, 2 }
> - }
> -};
> -
> -/* 4-tap Filter Coefficient */
> -static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = {
> - { /* Ratio <= 65536 (~8:8) */
> - { 0, 128, 0, 0 },
> - { -4, 127, 5, 0 },
> - { -6, 124, 11, -1 },
> - { -8, 118, 19, -1 },
> - { -8, 111, 27, -2 },
> - { -8, 102, 37, -3 },
> - { -8, 92, 48, -4 },
> - { -7, 81, 59, -5 },
> - { -6, 70, 70, -6 },
> - { -5, 59, 81, -7 },
> - { -4, 48, 92, -8 },
> - { -3, 37, 102, -8 },
> - { -2, 27, 111, -8 },
> - { -1, 19, 118, -8 },
> - { -1, 11, 124, -6 },
> - { 0, 5, 127, -4 }
> - }, { /* 65536 < Ratio <= 74898 (~8:7) */
> - { 8, 112, 8, 0 },
> - { 4, 111, 14, -1 },
> - { 1, 109, 20, -2 },
> - { -2, 105, 27, -2 },
> - { -3, 100, 34, -3 },
> - { -5, 93, 43, -3 },
> - { -5, 86, 51, -4 },
> - { -5, 77, 60, -4 },
> - { -5, 69, 69, -5 },
> - { -4, 60, 77, -5 },
> - { -4, 51, 86, -5 },
> - { -3, 43, 93, -5 },
> - { -3, 34, 100, -3 },
> - { -2, 27, 105, -2 },
> - { -2, 20, 109, 1 },
> - { -1, 14, 111, 4 }
> - }, { /* 74898 < Ratio <= 87381 (~8:6) */
> - { 16, 96, 16, 0 },
> - { 12, 97, 21, -2 },
> - { 8, 96, 26, -2 },
> - { 5, 93, 32, -2 },
> - { 2, 89, 39, -2 },
> - { 0, 84, 46, -2 },
> - { -1, 79, 53, -3 },
> - { -2, 73, 59, -2 },
> - { -2, 66, 66, -2 },
> - { -2, 59, 73, -2 },
> - { -3, 53, 79, -1 },
> - { -2, 46, 84, 0 },
> - { -2, 39, 89, 2 },
> - { -2, 32, 93, 5 },
> - { -2, 26, 96, 8 },
> - { -2, 21, 97, 12 }
> - }, { /* 87381 < Ratio <= 104857 (~8:5) */
> - { 22, 84, 22, 0 },
> - { 18, 85, 26, -1 },
> - { 14, 84, 31, -1 },
> - { 11, 82, 36, -1 },
> - { 8, 79, 42, -1 },
> - { 6, 76, 47, -1 },
> - { 4, 72, 52, 0 },
> - { 2, 68, 58, 0 },
> - { 1, 63, 63, 1 },
> - { 0, 58, 68, 2 },
> - { 0, 52, 72, 4 },
> - { -1, 47, 76, 6 },
> - { -1, 42, 79, 8 },
> - { -1, 36, 82, 11 },
> - { -1, 31, 84, 14 },
> - { -1, 26, 85, 18 }
> - }, { /* 104857 < Ratio <= 131072 (~8:4) */
> - { 26, 76, 26, 0 },
> - { 22, 76, 30, 0 },
> - { 19, 75, 34, 0 },
> - { 16, 73, 38, 1 },
> - { 13, 71, 43, 1 },
> - { 10, 69, 47, 2 },
> - { 8, 66, 51, 3 },
> - { 6, 63, 55, 4 },
> - { 5, 59, 59, 5 },
> - { 4, 55, 63, 6 },
> - { 3, 51, 66, 8 },
> - { 2, 47, 69, 10 },
> - { 1, 43, 71, 13 },
> - { 1, 38, 73, 16 },
> - { 0, 34, 75, 19 },
> - { 0, 30, 76, 22 }
> - }, { /* 131072 < Ratio <= 174762 (~8:3) */
> - { 29, 70, 29, 0 },
> - { 26, 68, 32, 2 },
> - { 23, 67, 36, 2 },
> - { 20, 66, 39, 3 },
> - { 17, 65, 43, 3 },
> - { 15, 63, 46, 4 },
> - { 12, 61, 50, 5 },
> - { 10, 58, 53, 7 },
> - { 8, 56, 56, 8 },
> - { 7, 53, 58, 10 },
> - { 5, 50, 61, 12 },
> - { 4, 46, 63, 15 },
> - { 3, 43, 65, 17 },
> - { 3, 39, 66, 20 },
> - { 2, 36, 67, 23 },
> - { 2, 32, 68, 26 }
> - }, { /* 174762 < Ratio <= 262144 (~8:2) */
> - { 32, 64, 32, 0 },
> - { 28, 63, 34, 3 },
> - { 25, 62, 37, 4 },
> - { 22, 62, 40, 4 },
> - { 19, 61, 43, 5 },
> - { 17, 59, 46, 6 },
> - { 15, 58, 48, 7 },
> - { 13, 55, 51, 9 },
> - { 11, 53, 53, 11 },
> - { 9, 51, 55, 13 },
> - { 7, 48, 58, 15 },
> - { 6, 46, 59, 17 },
> - { 5, 43, 61, 19 },
> - { 4, 40, 62, 22 },
> - { 4, 37, 62, 25 },
> - { 3, 34, 63, 28 }
> - }
> -};
> -
> -static int gsc_sw_reset(struct gsc_context *ctx)
> -{
> - u32 cfg;
> - int count = GSC_RESET_TIMEOUT;
> -
> - /* s/w reset */
> - cfg = (GSC_SW_RESET_SRESET);
> - gsc_write(cfg, GSC_SW_RESET);
> -
> - /* wait s/w reset complete */
> - while (count--) {
> - cfg = gsc_read(GSC_SW_RESET);
> - if (!cfg)
> - break;
> - usleep_range(1000, 2000);
> - }
> -
> - if (cfg) {
> - DRM_ERROR("failed to reset gsc h/w.\n");
> - return -EBUSY;
> - }
> -
> - /* reset sequence */
> - cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
> - cfg |= (GSC_IN_BASE_ADDR_MASK |
> - GSC_IN_BASE_ADDR_PINGPONG(0));
> - gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
> - gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
> - gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
> -
> - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> - cfg |= (GSC_OUT_BASE_ADDR_MASK |
> - GSC_OUT_BASE_ADDR_PINGPONG(0));
> - gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
> - gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
> - gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
> -
> - return 0;
> -}
> -
> -static void gsc_set_gscblk_fimd_wb(struct gsc_context *ctx, bool enable)
> -{
> - unsigned int gscblk_cfg;
> -
> - if (!ctx->sysreg)
> - return;
> -
> - regmap_read(ctx->sysreg, SYSREG_GSCBLK_CFG1, &gscblk_cfg);
> -
> - if (enable)
> - gscblk_cfg |= GSC_BLK_DISP1WB_DEST(ctx->id) |
> - GSC_BLK_GSCL_WB_IN_SRC_SEL(ctx->id) |
> - GSC_BLK_SW_RESET_WB_DEST(ctx->id);
> - else
> - gscblk_cfg |= GSC_BLK_PXLASYNC_LO_MASK_WB(ctx->id);
> -
> - regmap_write(ctx->sysreg, SYSREG_GSCBLK_CFG1, gscblk_cfg);
> -}
> -
> -static void gsc_handle_irq(struct gsc_context *ctx, bool enable,
> - bool overflow, bool done)
> -{
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("enable[%d]overflow[%d]level[%d]\n",
> - enable, overflow, done);
> -
> - cfg = gsc_read(GSC_IRQ);
> - cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK);
> -
> - if (enable)
> - cfg |= GSC_IRQ_ENABLE;
> - else
> - cfg &= ~GSC_IRQ_ENABLE;
> -
> - if (overflow)
> - cfg &= ~GSC_IRQ_OR_MASK;
> - else
> - cfg |= GSC_IRQ_OR_MASK;
> -
> - if (done)
> - cfg &= ~GSC_IRQ_FRMDONE_MASK;
> - else
> - cfg |= GSC_IRQ_FRMDONE_MASK;
> -
> - gsc_write(cfg, GSC_IRQ);
> -}
> -
> -
> -static int gsc_src_set_fmt(struct device *dev, u32 fmt)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
> -
> - cfg = gsc_read(GSC_IN_CON);
> - cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK |
> - GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK |
> - GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE |
> - GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK);
> -
> - switch (fmt) {
> - case DRM_FORMAT_RGB565:
> - cfg |= GSC_IN_RGB565;
> - break;
> - case DRM_FORMAT_XRGB8888:
> - cfg |= GSC_IN_XRGB8888;
> - break;
> - case DRM_FORMAT_BGRX8888:
> - cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP);
> - break;
> - case DRM_FORMAT_YUYV:
> - cfg |= (GSC_IN_YUV422_1P |
> - GSC_IN_YUV422_1P_ORDER_LSB_Y |
> - GSC_IN_CHROMA_ORDER_CBCR);
> - break;
> - case DRM_FORMAT_YVYU:
> - cfg |= (GSC_IN_YUV422_1P |
> - GSC_IN_YUV422_1P_ORDER_LSB_Y |
> - GSC_IN_CHROMA_ORDER_CRCB);
> - break;
> - case DRM_FORMAT_UYVY:
> - cfg |= (GSC_IN_YUV422_1P |
> - GSC_IN_YUV422_1P_OEDER_LSB_C |
> - GSC_IN_CHROMA_ORDER_CBCR);
> - break;
> - case DRM_FORMAT_VYUY:
> - cfg |= (GSC_IN_YUV422_1P |
> - GSC_IN_YUV422_1P_OEDER_LSB_C |
> - GSC_IN_CHROMA_ORDER_CRCB);
> - break;
> - case DRM_FORMAT_NV21:
> - case DRM_FORMAT_NV61:
> - cfg |= (GSC_IN_CHROMA_ORDER_CRCB |
> - GSC_IN_YUV420_2P);
> - break;
> - case DRM_FORMAT_YUV422:
> - cfg |= GSC_IN_YUV422_3P;
> - break;
> - case DRM_FORMAT_YUV420:
> - case DRM_FORMAT_YVU420:
> - cfg |= GSC_IN_YUV420_3P;
> - break;
> - case DRM_FORMAT_NV12:
> - case DRM_FORMAT_NV16:
> - cfg |= (GSC_IN_CHROMA_ORDER_CBCR |
> - GSC_IN_YUV420_2P);
> - break;
> - default:
> - dev_err(ippdrv->dev, "invalid target yuv order 0x%x.\n", fmt);
> - return -EINVAL;
> - }
> -
> - gsc_write(cfg, GSC_IN_CON);
> -
> - return 0;
> -}
> -
> -static int gsc_src_set_transf(struct device *dev,
> - enum drm_exynos_degree degree,
> - enum drm_exynos_flip flip, bool *swap)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
> -
> - cfg = gsc_read(GSC_IN_CON);
> - cfg &= ~GSC_IN_ROT_MASK;
> -
> - switch (degree) {
> - case EXYNOS_DRM_DEGREE_0:
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg |= GSC_IN_ROT_XFLIP;
> - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg |= GSC_IN_ROT_YFLIP;
> - break;
> - case EXYNOS_DRM_DEGREE_90:
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg |= GSC_IN_ROT_90_XFLIP;
> - else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg |= GSC_IN_ROT_90_YFLIP;
> - else
> - cfg |= GSC_IN_ROT_90;
> - break;
> - case EXYNOS_DRM_DEGREE_180:
> - cfg |= GSC_IN_ROT_180;
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg &= ~GSC_IN_ROT_XFLIP;
> - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg &= ~GSC_IN_ROT_YFLIP;
> - break;
> - case EXYNOS_DRM_DEGREE_270:
> - cfg |= GSC_IN_ROT_270;
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg &= ~GSC_IN_ROT_XFLIP;
> - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg &= ~GSC_IN_ROT_YFLIP;
> - break;
> - default:
> - dev_err(ippdrv->dev, "invalid degree value %d.\n", degree);
> - return -EINVAL;
> - }
> -
> - gsc_write(cfg, GSC_IN_CON);
> -
> - ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
> - *swap = ctx->rotation;
> -
> - return 0;
> -}
> -
> -static int gsc_src_set_size(struct device *dev, int swap,
> - struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct drm_exynos_pos img_pos = *pos;
> - struct gsc_scaler *sc = &ctx->sc;
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n",
> - swap, pos->x, pos->y, pos->w, pos->h);
> -
> - if (swap) {
> - img_pos.w = pos->h;
> - img_pos.h = pos->w;
> - }
> -
> - /* pixel offset */
> - cfg = (GSC_SRCIMG_OFFSET_X(img_pos.x) |
> - GSC_SRCIMG_OFFSET_Y(img_pos.y));
> - gsc_write(cfg, GSC_SRCIMG_OFFSET);
> -
> - /* cropped size */
> - cfg = (GSC_CROPPED_WIDTH(img_pos.w) |
> - GSC_CROPPED_HEIGHT(img_pos.h));
> - gsc_write(cfg, GSC_CROPPED_SIZE);
> -
> - DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize);
> -
> - /* original size */
> - cfg = gsc_read(GSC_SRCIMG_SIZE);
> - cfg &= ~(GSC_SRCIMG_HEIGHT_MASK |
> - GSC_SRCIMG_WIDTH_MASK);
> -
> - cfg |= (GSC_SRCIMG_WIDTH(sz->hsize) |
> - GSC_SRCIMG_HEIGHT(sz->vsize));
> -
> - gsc_write(cfg, GSC_SRCIMG_SIZE);
> -
> - cfg = gsc_read(GSC_IN_CON);
> - cfg &= ~GSC_IN_RGB_TYPE_MASK;
> -
> - DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range);
> -
> - if (pos->w >= GSC_WIDTH_ITU_709)
> - if (sc->range)
> - cfg |= GSC_IN_RGB_HD_WIDE;
> - else
> - cfg |= GSC_IN_RGB_HD_NARROW;
> - else
> - if (sc->range)
> - cfg |= GSC_IN_RGB_SD_WIDE;
> - else
> - cfg |= GSC_IN_RGB_SD_NARROW;
> -
> - gsc_write(cfg, GSC_IN_CON);
> -
> - return 0;
> -}
> -
> -static int gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
> - enum drm_exynos_ipp_buf_type buf_type)
> -{
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - bool masked;
> - u32 cfg;
> - u32 mask = 0x00000001 << buf_id;
> -
> - DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type);
> -
> - /* mask register set */
> - cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
> -
> - switch (buf_type) {
> - case IPP_BUF_ENQUEUE:
> - masked = false;
> - break;
> - case IPP_BUF_DEQUEUE:
> - masked = true;
> - break;
> - default:
> - dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n");
> - return -EINVAL;
> - }
> -
> - /* sequence id */
> - cfg &= ~mask;
> - cfg |= masked << buf_id;
> - gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
> - gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
> - gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
> -
> - return 0;
> -}
> -
> -static int gsc_src_set_addr(struct device *dev,
> - struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
> - enum drm_exynos_ipp_buf_type buf_type)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
> - struct drm_exynos_ipp_property *property;
> -
> - if (!c_node) {
> - DRM_ERROR("failed to get c_node.\n");
> - return -EFAULT;
> - }
> -
> - property = &c_node->property;
> -
> - DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
> - property->prop_id, buf_id, buf_type);
> -
> - if (buf_id > GSC_MAX_SRC) {
> - dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id);
> - return -EINVAL;
> - }
> -
> - /* address register set */
> - switch (buf_type) {
> - case IPP_BUF_ENQUEUE:
> - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
> - GSC_IN_BASE_ADDR_Y(buf_id));
> - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
> - GSC_IN_BASE_ADDR_CB(buf_id));
> - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
> - GSC_IN_BASE_ADDR_CR(buf_id));
> - break;
> - case IPP_BUF_DEQUEUE:
> - gsc_write(0x0, GSC_IN_BASE_ADDR_Y(buf_id));
> - gsc_write(0x0, GSC_IN_BASE_ADDR_CB(buf_id));
> - gsc_write(0x0, GSC_IN_BASE_ADDR_CR(buf_id));
> - break;
> - default:
> - /* bypass */
> - break;
> - }
> -
> - return gsc_src_set_buf_seq(ctx, buf_id, buf_type);
> -}
> -
> -static struct exynos_drm_ipp_ops gsc_src_ops = {
> - .set_fmt = gsc_src_set_fmt,
> - .set_transf = gsc_src_set_transf,
> - .set_size = gsc_src_set_size,
> - .set_addr = gsc_src_set_addr,
> -};
> -
> -static int gsc_dst_set_fmt(struct device *dev, u32 fmt)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
> -
> - cfg = gsc_read(GSC_OUT_CON);
> - cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK |
> - GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK |
> - GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK |
> - GSC_OUT_GLOBAL_ALPHA_MASK);
> -
> - switch (fmt) {
> - case DRM_FORMAT_RGB565:
> - cfg |= GSC_OUT_RGB565;
> - break;
> - case DRM_FORMAT_XRGB8888:
> - cfg |= GSC_OUT_XRGB8888;
> - break;
> - case DRM_FORMAT_BGRX8888:
> - cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP);
> - break;
> - case DRM_FORMAT_YUYV:
> - cfg |= (GSC_OUT_YUV422_1P |
> - GSC_OUT_YUV422_1P_ORDER_LSB_Y |
> - GSC_OUT_CHROMA_ORDER_CBCR);
> - break;
> - case DRM_FORMAT_YVYU:
> - cfg |= (GSC_OUT_YUV422_1P |
> - GSC_OUT_YUV422_1P_ORDER_LSB_Y |
> - GSC_OUT_CHROMA_ORDER_CRCB);
> - break;
> - case DRM_FORMAT_UYVY:
> - cfg |= (GSC_OUT_YUV422_1P |
> - GSC_OUT_YUV422_1P_OEDER_LSB_C |
> - GSC_OUT_CHROMA_ORDER_CBCR);
> - break;
> - case DRM_FORMAT_VYUY:
> - cfg |= (GSC_OUT_YUV422_1P |
> - GSC_OUT_YUV422_1P_OEDER_LSB_C |
> - GSC_OUT_CHROMA_ORDER_CRCB);
> - break;
> - case DRM_FORMAT_NV21:
> - case DRM_FORMAT_NV61:
> - cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P);
> - break;
> - case DRM_FORMAT_YUV422:
> - case DRM_FORMAT_YUV420:
> - case DRM_FORMAT_YVU420:
> - cfg |= GSC_OUT_YUV420_3P;
> - break;
> - case DRM_FORMAT_NV12:
> - case DRM_FORMAT_NV16:
> - cfg |= (GSC_OUT_CHROMA_ORDER_CBCR |
> - GSC_OUT_YUV420_2P);
> - break;
> - default:
> - dev_err(ippdrv->dev, "invalid target yuv order 0x%x.\n", fmt);
> - return -EINVAL;
> - }
> -
> - gsc_write(cfg, GSC_OUT_CON);
> -
> - return 0;
> -}
> -
> -static int gsc_dst_set_transf(struct device *dev,
> - enum drm_exynos_degree degree,
> - enum drm_exynos_flip flip, bool *swap)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
> -
> - cfg = gsc_read(GSC_IN_CON);
> - cfg &= ~GSC_IN_ROT_MASK;
> -
> - switch (degree) {
> - case EXYNOS_DRM_DEGREE_0:
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg |= GSC_IN_ROT_XFLIP;
> - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg |= GSC_IN_ROT_YFLIP;
> - break;
> - case EXYNOS_DRM_DEGREE_90:
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg |= GSC_IN_ROT_90_XFLIP;
> - else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg |= GSC_IN_ROT_90_YFLIP;
> - else
> - cfg |= GSC_IN_ROT_90;
> - break;
> - case EXYNOS_DRM_DEGREE_180:
> - cfg |= GSC_IN_ROT_180;
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg &= ~GSC_IN_ROT_XFLIP;
> - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg &= ~GSC_IN_ROT_YFLIP;
> - break;
> - case EXYNOS_DRM_DEGREE_270:
> - cfg |= GSC_IN_ROT_270;
> - if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> - cfg &= ~GSC_IN_ROT_XFLIP;
> - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> - cfg &= ~GSC_IN_ROT_YFLIP;
> - break;
> - default:
> - dev_err(ippdrv->dev, "invalid degree value %d.\n", degree);
> - return -EINVAL;
> - }
> -
> - gsc_write(cfg, GSC_IN_CON);
> -
> - ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
> - *swap = ctx->rotation;
> -
> - return 0;
> -}
> -
> -static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio)
> -{
> - DRM_DEBUG_KMS("src[%d]dst[%d]\n", src, dst);
> -
> - if (src >= dst * 8) {
> - DRM_ERROR("failed to make ratio and shift.\n");
> - return -EINVAL;
> - } else if (src >= dst * 4)
> - *ratio = 4;
> - else if (src >= dst * 2)
> - *ratio = 2;
> - else
> - *ratio = 1;
> -
> - return 0;
> -}
> -
> -static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor)
> -{
> - if (hratio == 4 && vratio == 4)
> - *shfactor = 4;
> - else if ((hratio == 4 && vratio == 2) ||
> - (hratio == 2 && vratio == 4))
> - *shfactor = 3;
> - else if ((hratio == 4 && vratio == 1) ||
> - (hratio == 1 && vratio == 4) ||
> - (hratio == 2 && vratio == 2))
> - *shfactor = 2;
> - else if (hratio == 1 && vratio == 1)
> - *shfactor = 0;
> - else
> - *shfactor = 1;
> -}
> -
> -static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc,
> - struct drm_exynos_pos *src, struct drm_exynos_pos *dst)
> -{
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - u32 cfg;
> - u32 src_w, src_h, dst_w, dst_h;
> - int ret = 0;
> -
> - src_w = src->w;
> - src_h = src->h;
> -
> - if (ctx->rotation) {
> - dst_w = dst->h;
> - dst_h = dst->w;
> - } else {
> - dst_w = dst->w;
> - dst_h = dst->h;
> - }
> -
> - ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio);
> - if (ret) {
> - dev_err(ippdrv->dev, "failed to get ratio horizontal.\n");
> - return ret;
> - }
> -
> - ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio);
> - if (ret) {
> - dev_err(ippdrv->dev, "failed to get ratio vertical.\n");
> - return ret;
> - }
> -
> - DRM_DEBUG_KMS("pre_hratio[%d]pre_vratio[%d]\n",
> - sc->pre_hratio, sc->pre_vratio);
> -
> - sc->main_hratio = (src_w << 16) / dst_w;
> - sc->main_vratio = (src_h << 16) / dst_h;
> -
> - DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
> - sc->main_hratio, sc->main_vratio);
> -
> - gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio,
> - &sc->pre_shfactor);
> -
> - DRM_DEBUG_KMS("pre_shfactor[%d]\n", sc->pre_shfactor);
> -
> - cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) |
> - GSC_PRESC_H_RATIO(sc->pre_hratio) |
> - GSC_PRESC_V_RATIO(sc->pre_vratio));
> - gsc_write(cfg, GSC_PRE_SCALE_RATIO);
> -
> - return ret;
> -}
> -
> -static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio)
> -{
> - int i, j, k, sc_ratio;
> -
> - if (main_hratio <= GSC_SC_UP_MAX_RATIO)
> - sc_ratio = 0;
> - else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8)
> - sc_ratio = 1;
> - else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8)
> - sc_ratio = 2;
> - else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8)
> - sc_ratio = 3;
> - else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8)
> - sc_ratio = 4;
> - else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8)
> - sc_ratio = 5;
> - else
> - sc_ratio = 6;
> -
> - for (i = 0; i < GSC_COEF_PHASE; i++)
> - for (j = 0; j < GSC_COEF_H_8T; j++)
> - for (k = 0; k < GSC_COEF_DEPTH; k++)
> - gsc_write(h_coef_8t[sc_ratio][i][j],
> - GSC_HCOEF(i, j, k));
> -}
> -
> -static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio)
> -{
> - int i, j, k, sc_ratio;
> -
> - if (main_vratio <= GSC_SC_UP_MAX_RATIO)
> - sc_ratio = 0;
> - else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8)
> - sc_ratio = 1;
> - else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8)
> - sc_ratio = 2;
> - else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8)
> - sc_ratio = 3;
> - else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8)
> - sc_ratio = 4;
> - else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8)
> - sc_ratio = 5;
> - else
> - sc_ratio = 6;
> -
> - for (i = 0; i < GSC_COEF_PHASE; i++)
> - for (j = 0; j < GSC_COEF_V_4T; j++)
> - for (k = 0; k < GSC_COEF_DEPTH; k++)
> - gsc_write(v_coef_4t[sc_ratio][i][j],
> - GSC_VCOEF(i, j, k));
> -}
> -
> -static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc)
> -{
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
> - sc->main_hratio, sc->main_vratio);
> -
> - gsc_set_h_coef(ctx, sc->main_hratio);
> - cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio);
> - gsc_write(cfg, GSC_MAIN_H_RATIO);
> -
> - gsc_set_v_coef(ctx, sc->main_vratio);
> - cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio);
> - gsc_write(cfg, GSC_MAIN_V_RATIO);
> -}
> -
> -static int gsc_dst_set_size(struct device *dev, int swap,
> - struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct drm_exynos_pos img_pos = *pos;
> - struct gsc_scaler *sc = &ctx->sc;
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n",
> - swap, pos->x, pos->y, pos->w, pos->h);
> -
> - if (swap) {
> - img_pos.w = pos->h;
> - img_pos.h = pos->w;
> - }
> -
> - /* pixel offset */
> - cfg = (GSC_DSTIMG_OFFSET_X(pos->x) |
> - GSC_DSTIMG_OFFSET_Y(pos->y));
> - gsc_write(cfg, GSC_DSTIMG_OFFSET);
> -
> - /* scaled size */
> - cfg = (GSC_SCALED_WIDTH(img_pos.w) | GSC_SCALED_HEIGHT(img_pos.h));
> - gsc_write(cfg, GSC_SCALED_SIZE);
> -
> - DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize);
> -
> - /* original size */
> - cfg = gsc_read(GSC_DSTIMG_SIZE);
> - cfg &= ~(GSC_DSTIMG_HEIGHT_MASK |
> - GSC_DSTIMG_WIDTH_MASK);
> - cfg |= (GSC_DSTIMG_WIDTH(sz->hsize) |
> - GSC_DSTIMG_HEIGHT(sz->vsize));
> - gsc_write(cfg, GSC_DSTIMG_SIZE);
> -
> - cfg = gsc_read(GSC_OUT_CON);
> - cfg &= ~GSC_OUT_RGB_TYPE_MASK;
> -
> - DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range);
> -
> - if (pos->w >= GSC_WIDTH_ITU_709)
> - if (sc->range)
> - cfg |= GSC_OUT_RGB_HD_WIDE;
> - else
> - cfg |= GSC_OUT_RGB_HD_NARROW;
> - else
> - if (sc->range)
> - cfg |= GSC_OUT_RGB_SD_WIDE;
> - else
> - cfg |= GSC_OUT_RGB_SD_NARROW;
> -
> - gsc_write(cfg, GSC_OUT_CON);
> -
> - return 0;
> -}
> -
> -static int gsc_dst_get_buf_seq(struct gsc_context *ctx)
> -{
> - u32 cfg, i, buf_num = GSC_REG_SZ;
> - u32 mask = 0x00000001;
> -
> - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> -
> - for (i = 0; i < GSC_REG_SZ; i++)
> - if (cfg & (mask << i))
> - buf_num--;
> -
> - DRM_DEBUG_KMS("buf_num[%d]\n", buf_num);
> -
> - return buf_num;
> -}
> -
> -static int gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
> - enum drm_exynos_ipp_buf_type buf_type)
> -{
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - bool masked;
> - u32 cfg;
> - u32 mask = 0x00000001 << buf_id;
> - int ret = 0;
> -
> - DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type);
> -
> - mutex_lock(&ctx->lock);
> -
> - /* mask register set */
> - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> -
> - switch (buf_type) {
> - case IPP_BUF_ENQUEUE:
> - masked = false;
> - break;
> - case IPP_BUF_DEQUEUE:
> - masked = true;
> - break;
> - default:
> - dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n");
> - ret = -EINVAL;
> - goto err_unlock;
> - }
> -
> - /* sequence id */
> - cfg &= ~mask;
> - cfg |= masked << buf_id;
> - gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
> - gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
> - gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
> -
> - /* interrupt enable */
> - if (buf_type == IPP_BUF_ENQUEUE &&
> - gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START)
> - gsc_handle_irq(ctx, true, false, true);
> -
> - /* interrupt disable */
> - if (buf_type == IPP_BUF_DEQUEUE &&
> - gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP)
> - gsc_handle_irq(ctx, false, false, true);
> -
> -err_unlock:
> - mutex_unlock(&ctx->lock);
> - return ret;
> -}
> -
> -static int gsc_dst_set_addr(struct device *dev,
> - struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
> - enum drm_exynos_ipp_buf_type buf_type)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
> - struct drm_exynos_ipp_property *property;
> -
> - if (!c_node) {
> - DRM_ERROR("failed to get c_node.\n");
> - return -EFAULT;
> - }
> -
> - property = &c_node->property;
> -
> - DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
> - property->prop_id, buf_id, buf_type);
> -
> - if (buf_id > GSC_MAX_DST) {
> - dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id);
> - return -EINVAL;
> - }
> -
> - /* address register set */
> - switch (buf_type) {
> - case IPP_BUF_ENQUEUE:
> - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
> - GSC_OUT_BASE_ADDR_Y(buf_id));
> - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
> - GSC_OUT_BASE_ADDR_CB(buf_id));
> - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
> - GSC_OUT_BASE_ADDR_CR(buf_id));
> - break;
> - case IPP_BUF_DEQUEUE:
> - gsc_write(0x0, GSC_OUT_BASE_ADDR_Y(buf_id));
> - gsc_write(0x0, GSC_OUT_BASE_ADDR_CB(buf_id));
> - gsc_write(0x0, GSC_OUT_BASE_ADDR_CR(buf_id));
> - break;
> - default:
> - /* bypass */
> - break;
> - }
> -
> - return gsc_dst_set_buf_seq(ctx, buf_id, buf_type);
> -}
> -
> -static struct exynos_drm_ipp_ops gsc_dst_ops = {
> - .set_fmt = gsc_dst_set_fmt,
> - .set_transf = gsc_dst_set_transf,
> - .set_size = gsc_dst_set_size,
> - .set_addr = gsc_dst_set_addr,
> -};
> -
> -static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable)
> -{
> - DRM_DEBUG_KMS("enable[%d]\n", enable);
> -
> - if (enable) {
> - clk_prepare_enable(ctx->gsc_clk);
> - ctx->suspended = false;
> - } else {
> - clk_disable_unprepare(ctx->gsc_clk);
> - ctx->suspended = true;
> - }
> -
> - return 0;
> -}
> -
> -static int gsc_get_src_buf_index(struct gsc_context *ctx)
> -{
> - u32 cfg, curr_index, i;
> - u32 buf_id = GSC_MAX_SRC;
> - int ret;
> -
> - DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
> -
> - cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
> - curr_index = GSC_IN_CURR_GET_INDEX(cfg);
> -
> - for (i = curr_index; i < GSC_MAX_SRC; i++) {
> - if (!((cfg >> i) & 0x1)) {
> - buf_id = i;
> - break;
> - }
> - }
> -
> - if (buf_id == GSC_MAX_SRC) {
> - DRM_ERROR("failed to get in buffer index.\n");
> - return -EINVAL;
> - }
> -
> - ret = gsc_src_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE);
> - if (ret < 0) {
> - DRM_ERROR("failed to dequeue.\n");
> - return ret;
> - }
> -
> - DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
> - curr_index, buf_id);
> -
> - return buf_id;
> -}
> -
> -static int gsc_get_dst_buf_index(struct gsc_context *ctx)
> -{
> - u32 cfg, curr_index, i;
> - u32 buf_id = GSC_MAX_DST;
> - int ret;
> -
> - DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
> -
> - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> - curr_index = GSC_OUT_CURR_GET_INDEX(cfg);
> -
> - for (i = curr_index; i < GSC_MAX_DST; i++) {
> - if (!((cfg >> i) & 0x1)) {
> - buf_id = i;
> - break;
> - }
> - }
> -
> - if (buf_id == GSC_MAX_DST) {
> - DRM_ERROR("failed to get out buffer index.\n");
> - return -EINVAL;
> - }
> -
> - ret = gsc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE);
> - if (ret < 0) {
> - DRM_ERROR("failed to dequeue.\n");
> - return ret;
> - }
> -
> - DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
> - curr_index, buf_id);
> -
> - return buf_id;
> -}
> -
> -static irqreturn_t gsc_irq_handler(int irq, void *dev_id)
> -{
> - struct gsc_context *ctx = dev_id;
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
> - struct drm_exynos_ipp_event_work *event_work =
> - c_node->event_work;
> - u32 status;
> - int buf_id[EXYNOS_DRM_OPS_MAX];
> -
> - DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
> -
> - status = gsc_read(GSC_IRQ);
> - if (status & GSC_IRQ_STATUS_OR_IRQ) {
> - dev_err(ippdrv->dev, "occurred overflow at %d, status 0x%x.\n",
> - ctx->id, status);
> - return IRQ_NONE;
> - }
> -
> - if (status & GSC_IRQ_STATUS_OR_FRM_DONE) {
> - dev_dbg(ippdrv->dev, "occurred frame done at %d, status 0x%x.\n",
> - ctx->id, status);
> -
> - buf_id[EXYNOS_DRM_OPS_SRC] = gsc_get_src_buf_index(ctx);
> - if (buf_id[EXYNOS_DRM_OPS_SRC] < 0)
> - return IRQ_HANDLED;
> -
> - buf_id[EXYNOS_DRM_OPS_DST] = gsc_get_dst_buf_index(ctx);
> - if (buf_id[EXYNOS_DRM_OPS_DST] < 0)
> - return IRQ_HANDLED;
> -
> - DRM_DEBUG_KMS("buf_id_src[%d]buf_id_dst[%d]\n",
> - buf_id[EXYNOS_DRM_OPS_SRC], buf_id[EXYNOS_DRM_OPS_DST]);
> -
> - event_work->ippdrv = ippdrv;
> - event_work->buf_id[EXYNOS_DRM_OPS_SRC] =
> - buf_id[EXYNOS_DRM_OPS_SRC];
> - event_work->buf_id[EXYNOS_DRM_OPS_DST] =
> - buf_id[EXYNOS_DRM_OPS_DST];
> - queue_work(ippdrv->event_workq, &event_work->work);
> - }
> -
> - return IRQ_HANDLED;
> -}
> -
> -static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
> -{
> - struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
> -
> - prop_list->version = 1;
> - prop_list->writeback = 1;
> - prop_list->refresh_min = GSC_REFRESH_MIN;
> - prop_list->refresh_max = GSC_REFRESH_MAX;
> - prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) |
> - (1 << EXYNOS_DRM_FLIP_HORIZONTAL);
> - prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) |
> - (1 << EXYNOS_DRM_DEGREE_90) |
> - (1 << EXYNOS_DRM_DEGREE_180) |
> - (1 << EXYNOS_DRM_DEGREE_270);
> - prop_list->csc = 1;
> - prop_list->crop = 1;
> - prop_list->crop_max.hsize = GSC_CROP_MAX;
> - prop_list->crop_max.vsize = GSC_CROP_MAX;
> - prop_list->crop_min.hsize = GSC_CROP_MIN;
> - prop_list->crop_min.vsize = GSC_CROP_MIN;
> - prop_list->scale = 1;
> - prop_list->scale_max.hsize = GSC_SCALE_MAX;
> - prop_list->scale_max.vsize = GSC_SCALE_MAX;
> - prop_list->scale_min.hsize = GSC_SCALE_MIN;
> - prop_list->scale_min.vsize = GSC_SCALE_MIN;
> -
> - return 0;
> -}
> -
> -static inline bool gsc_check_drm_flip(enum drm_exynos_flip flip)
> -{
> - switch (flip) {
> - case EXYNOS_DRM_FLIP_NONE:
> - case EXYNOS_DRM_FLIP_VERTICAL:
> - case EXYNOS_DRM_FLIP_HORIZONTAL:
> - case EXYNOS_DRM_FLIP_BOTH:
> - return true;
> - default:
> - DRM_DEBUG_KMS("invalid flip\n");
> - return false;
> - }
> -}
> -
> -static int gsc_ippdrv_check_property(struct device *dev,
> - struct drm_exynos_ipp_property *property)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - struct drm_exynos_ipp_prop_list *pp = &ippdrv->prop_list;
> - struct drm_exynos_ipp_config *config;
> - struct drm_exynos_pos *pos;
> - struct drm_exynos_sz *sz;
> - bool swap;
> - int i;
> -
> - for_each_ipp_ops(i) {
> - if ((i == EXYNOS_DRM_OPS_SRC) &&
> - (property->cmd == IPP_CMD_WB))
> - continue;
> -
> - config = &property->config[i];
> - pos = &config->pos;
> - sz = &config->sz;
> -
> - /* check for flip */
> - if (!gsc_check_drm_flip(config->flip)) {
> - DRM_ERROR("invalid flip.\n");
> - goto err_property;
> - }
> -
> - /* check for degree */
> - switch (config->degree) {
> - case EXYNOS_DRM_DEGREE_90:
> - case EXYNOS_DRM_DEGREE_270:
> - swap = true;
> - break;
> - case EXYNOS_DRM_DEGREE_0:
> - case EXYNOS_DRM_DEGREE_180:
> - swap = false;
> - break;
> - default:
> - DRM_ERROR("invalid degree.\n");
> - goto err_property;
> - }
> -
> - /* check for buffer bound */
> - if ((pos->x + pos->w > sz->hsize) ||
> - (pos->y + pos->h > sz->vsize)) {
> - DRM_ERROR("out of buf bound.\n");
> - goto err_property;
> - }
> -
> - /* check for crop */
> - if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) {
> - if (swap) {
> - if ((pos->h < pp->crop_min.hsize) ||
> - (sz->vsize > pp->crop_max.hsize) ||
> - (pos->w < pp->crop_min.vsize) ||
> - (sz->hsize > pp->crop_max.vsize)) {
> - DRM_ERROR("out of crop size.\n");
> - goto err_property;
> - }
> - } else {
> - if ((pos->w < pp->crop_min.hsize) ||
> - (sz->hsize > pp->crop_max.hsize) ||
> - (pos->h < pp->crop_min.vsize) ||
> - (sz->vsize > pp->crop_max.vsize)) {
> - DRM_ERROR("out of crop size.\n");
> - goto err_property;
> - }
> - }
> - }
> -
> - /* check for scale */
> - if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) {
> - if (swap) {
> - if ((pos->h < pp->scale_min.hsize) ||
> - (sz->vsize > pp->scale_max.hsize) ||
> - (pos->w < pp->scale_min.vsize) ||
> - (sz->hsize > pp->scale_max.vsize)) {
> - DRM_ERROR("out of scale size.\n");
> - goto err_property;
> - }
> - } else {
> - if ((pos->w < pp->scale_min.hsize) ||
> - (sz->hsize > pp->scale_max.hsize) ||
> - (pos->h < pp->scale_min.vsize) ||
> - (sz->vsize > pp->scale_max.vsize)) {
> - DRM_ERROR("out of scale size.\n");
> - goto err_property;
> - }
> - }
> - }
> - }
> -
> - return 0;
> -
> -err_property:
> - for_each_ipp_ops(i) {
> - if ((i == EXYNOS_DRM_OPS_SRC) &&
> - (property->cmd == IPP_CMD_WB))
> - continue;
> -
> - config = &property->config[i];
> - pos = &config->pos;
> - sz = &config->sz;
> -
> - DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n",
> - i ? "dst" : "src", config->flip, config->degree,
> - pos->x, pos->y, pos->w, pos->h,
> - sz->hsize, sz->vsize);
> - }
> -
> - return -EINVAL;
> -}
> -
> -
> -static int gsc_ippdrv_reset(struct device *dev)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct gsc_scaler *sc = &ctx->sc;
> - int ret;
> -
> - /* reset h/w block */
> - ret = gsc_sw_reset(ctx);
> - if (ret < 0) {
> - dev_err(dev, "failed to reset hardware.\n");
> - return ret;
> - }
> -
> - /* scaler setting */
> - memset(&ctx->sc, 0x0, sizeof(ctx->sc));
> - sc->range = true;
> -
> - return 0;
> -}
> -
> -static int gsc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
> - struct drm_exynos_ipp_property *property;
> - struct drm_exynos_ipp_config *config;
> - struct drm_exynos_pos img_pos[EXYNOS_DRM_OPS_MAX];
> - struct drm_exynos_ipp_set_wb set_wb;
> - u32 cfg;
> - int ret, i;
> -
> - DRM_DEBUG_KMS("cmd[%d]\n", cmd);
> -
> - if (!c_node) {
> - DRM_ERROR("failed to get c_node.\n");
> - return -EINVAL;
> - }
> -
> - property = &c_node->property;
> -
> - gsc_handle_irq(ctx, true, false, true);
> -
> - for_each_ipp_ops(i) {
> - config = &property->config[i];
> - img_pos[i] = config->pos;
> - }
> -
> - switch (cmd) {
> - case IPP_CMD_M2M:
> - /* enable one shot */
> - cfg = gsc_read(GSC_ENABLE);
> - cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK |
> - GSC_ENABLE_CLK_GATE_MODE_MASK);
> - cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT;
> - gsc_write(cfg, GSC_ENABLE);
> -
> - /* src dma memory */
> - cfg = gsc_read(GSC_IN_CON);
> - cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
> - cfg |= GSC_IN_PATH_MEMORY;
> - gsc_write(cfg, GSC_IN_CON);
> -
> - /* dst dma memory */
> - cfg = gsc_read(GSC_OUT_CON);
> - cfg |= GSC_OUT_PATH_MEMORY;
> - gsc_write(cfg, GSC_OUT_CON);
> - break;
> - case IPP_CMD_WB:
> - set_wb.enable = 1;
> - set_wb.refresh = property->refresh_rate;
> - gsc_set_gscblk_fimd_wb(ctx, set_wb.enable);
> - exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
> -
> - /* src local path */
> - cfg = gsc_read(GSC_IN_CON);
> - cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
> - cfg |= (GSC_IN_PATH_LOCAL | GSC_IN_LOCAL_FIMD_WB);
> - gsc_write(cfg, GSC_IN_CON);
> -
> - /* dst dma memory */
> - cfg = gsc_read(GSC_OUT_CON);
> - cfg |= GSC_OUT_PATH_MEMORY;
> - gsc_write(cfg, GSC_OUT_CON);
> - break;
> - case IPP_CMD_OUTPUT:
> - /* src dma memory */
> - cfg = gsc_read(GSC_IN_CON);
> - cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
> - cfg |= GSC_IN_PATH_MEMORY;
> - gsc_write(cfg, GSC_IN_CON);
> -
> - /* dst local path */
> - cfg = gsc_read(GSC_OUT_CON);
> - cfg |= GSC_OUT_PATH_MEMORY;
> - gsc_write(cfg, GSC_OUT_CON);
> - break;
> - default:
> - ret = -EINVAL;
> - dev_err(dev, "invalid operations.\n");
> - return ret;
> - }
> -
> - ret = gsc_set_prescaler(ctx, &ctx->sc,
> - &img_pos[EXYNOS_DRM_OPS_SRC],
> - &img_pos[EXYNOS_DRM_OPS_DST]);
> - if (ret) {
> - dev_err(dev, "failed to set prescaler.\n");
> - return ret;
> - }
> -
> - gsc_set_scaler(ctx, &ctx->sc);
> -
> - cfg = gsc_read(GSC_ENABLE);
> - cfg |= GSC_ENABLE_ON;
> - gsc_write(cfg, GSC_ENABLE);
> -
> - return 0;
> -}
> -
> -static void gsc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd cmd)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct drm_exynos_ipp_set_wb set_wb = {0, 0};
> - u32 cfg;
> -
> - DRM_DEBUG_KMS("cmd[%d]\n", cmd);
> -
> - switch (cmd) {
> - case IPP_CMD_M2M:
> - /* bypass */
> - break;
> - case IPP_CMD_WB:
> - gsc_set_gscblk_fimd_wb(ctx, set_wb.enable);
> - exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
> - break;
> - case IPP_CMD_OUTPUT:
> - default:
> - dev_err(dev, "invalid operations.\n");
> - break;
> - }
> -
> - gsc_handle_irq(ctx, false, false, true);
> -
> - /* reset sequence */
> - gsc_write(0xff, GSC_OUT_BASE_ADDR_Y_MASK);
> - gsc_write(0xff, GSC_OUT_BASE_ADDR_CB_MASK);
> - gsc_write(0xff, GSC_OUT_BASE_ADDR_CR_MASK);
> -
> - cfg = gsc_read(GSC_ENABLE);
> - cfg &= ~GSC_ENABLE_ON;
> - gsc_write(cfg, GSC_ENABLE);
> -}
> -
> -static int gsc_probe(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> - struct gsc_context *ctx;
> - struct resource *res;
> - struct exynos_drm_ippdrv *ippdrv;
> - int ret;
> -
> - ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
> - if (!ctx)
> - return -ENOMEM;
> -
> - if (dev->of_node) {
> - ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node,
> - "samsung,sysreg");
> - if (IS_ERR(ctx->sysreg)) {
> - dev_warn(dev, "failed to get system register.\n");
> - ctx->sysreg = NULL;
> - }
> - }
> -
> - /* clock control */
> - ctx->gsc_clk = devm_clk_get(dev, "gscl");
> - if (IS_ERR(ctx->gsc_clk)) {
> - dev_err(dev, "failed to get gsc clock.\n");
> - return PTR_ERR(ctx->gsc_clk);
> - }
> -
> - /* resource memory */
> - ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - ctx->regs = devm_ioremap_resource(dev, ctx->regs_res);
> - if (IS_ERR(ctx->regs))
> - return PTR_ERR(ctx->regs);
> -
> - /* resource irq */
> - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> - if (!res) {
> - dev_err(dev, "failed to request irq resource.\n");
> - return -ENOENT;
> - }
> -
> - ctx->irq = res->start;
> - ret = devm_request_threaded_irq(dev, ctx->irq, NULL, gsc_irq_handler,
> - IRQF_ONESHOT, "drm_gsc", ctx);
> - if (ret < 0) {
> - dev_err(dev, "failed to request irq.\n");
> - return ret;
> - }
> -
> - /* context initailization */
> - ctx->id = pdev->id;
> -
> - ippdrv = &ctx->ippdrv;
> - ippdrv->dev = dev;
> - ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &gsc_src_ops;
> - ippdrv->ops[EXYNOS_DRM_OPS_DST] = &gsc_dst_ops;
> - ippdrv->check_property = gsc_ippdrv_check_property;
> - ippdrv->reset = gsc_ippdrv_reset;
> - ippdrv->start = gsc_ippdrv_start;
> - ippdrv->stop = gsc_ippdrv_stop;
> - ret = gsc_init_prop_list(ippdrv);
> - if (ret < 0) {
> - dev_err(dev, "failed to init property list.\n");
> - return ret;
> - }
> -
> - DRM_DEBUG_KMS("id[%d]ippdrv[%pK]\n", ctx->id, ippdrv);
> -
> - mutex_init(&ctx->lock);
> - platform_set_drvdata(pdev, ctx);
> -
> - pm_runtime_enable(dev);
> -
> - ret = exynos_drm_ippdrv_register(ippdrv);
> - if (ret < 0) {
> - dev_err(dev, "failed to register drm gsc device.\n");
> - goto err_ippdrv_register;
> - }
> -
> - dev_info(dev, "drm gsc registered successfully.\n");
> -
> - return 0;
> -
> -err_ippdrv_register:
> - pm_runtime_disable(dev);
> - return ret;
> -}
> -
> -static int gsc_remove(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> - struct gsc_context *ctx = get_gsc_context(dev);
> - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> -
> - exynos_drm_ippdrv_unregister(ippdrv);
> - mutex_destroy(&ctx->lock);
> -
> - pm_runtime_set_suspended(dev);
> - pm_runtime_disable(dev);
> -
> - return 0;
> -}
> -
> -static int __maybe_unused gsc_runtime_suspend(struct device *dev)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> -
> - DRM_DEBUG_KMS("id[%d]\n", ctx->id);
> -
> - return gsc_clk_ctrl(ctx, false);
> -}
> -
> -static int __maybe_unused gsc_runtime_resume(struct device *dev)
> -{
> - struct gsc_context *ctx = get_gsc_context(dev);
> -
> - DRM_DEBUG_KMS("id[%d]\n", ctx->id);
> -
> - return gsc_clk_ctrl(ctx, true);
> -}
> -
> -static const struct dev_pm_ops gsc_pm_ops = {
> - SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> - pm_runtime_force_resume)
> - SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL)
> -};
> -
> -static const struct of_device_id exynos_drm_gsc_of_match[] = {
> - { .compatible = "samsung,exynos5-gsc" },
> - { },
> -};
> -MODULE_DEVICE_TABLE(of, exynos_drm_gsc_of_match);
> -
> -struct platform_driver gsc_driver = {
> - .probe = gsc_probe,
> - .remove = gsc_remove,
> - .driver = {
> - .name = "exynos-drm-gsc",
> - .owner = THIS_MODULE,
> - .pm = &gsc_pm_ops,
> - .of_match_table = of_match_ptr(exynos_drm_gsc_of_match),
> - },
> -};
> -
> +/*
> + * Copyright (C) 2012 Samsung Electronics Co.Ltd
> + * Authors:
> + * Eunchul Kim <chulspro.kim@samsung.com>
> + * Jinyoung Jeon <jy0.jeon@samsung.com>
> + * Sangmin Lee <lsmin.lee@samsung.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + *
> + */
> +#include <linux/kernel.h>
> +#include <linux/component.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/of_device.h>
> +#include <linux/regmap.h>
> +
> +#include <drm/drmP.h>
> +#include <drm/exynos_drm.h>
> +#include "regs-gsc.h"
> +#include "exynos_drm_drv.h"
> +#include "exynos_drm_iommu.h"
> +#include "exynos_drm_ipp.h"
> +
> +/*
> + * GSC stands for General SCaler and
> + * supports image scaler/rotator and input/output DMA operations.
> + * input DMA reads image data from the memory.
> + * output DMA writes image data to memory.
> + * GSC supports image rotation and image effect functions.
> + */
> +
> +
> +#define GSC_MAX_CLOCKS 8
> +#define GSC_MAX_SRC 4
> +#define GSC_MAX_DST 16
> +#define GSC_RESET_TIMEOUT 50
> +#define GSC_BUF_STOP 1
> +#define GSC_BUF_START 2
> +#define GSC_REG_SZ 16
> +#define GSC_WIDTH_ITU_709 1280
> +#define GSC_SC_UP_MAX_RATIO 65536
> +#define GSC_SC_DOWN_RATIO_7_8 74898
> +#define GSC_SC_DOWN_RATIO_6_8 87381
> +#define GSC_SC_DOWN_RATIO_5_8 104857
> +#define GSC_SC_DOWN_RATIO_4_8 131072
> +#define GSC_SC_DOWN_RATIO_3_8 174762
> +#define GSC_SC_DOWN_RATIO_2_8 262144
> +#define GSC_CROP_MAX 8192
> +#define GSC_CROP_MIN 32
> +#define GSC_SCALE_MAX 4224
> +#define GSC_SCALE_MIN 32
> +#define GSC_COEF_RATIO 7
> +#define GSC_COEF_PHASE 9
> +#define GSC_COEF_ATTR 16
> +#define GSC_COEF_H_8T 8
> +#define GSC_COEF_V_4T 4
> +#define GSC_COEF_DEPTH 3
> +#define GSC_AUTOSUSPEND_DELAY 2000
> +
> +#define get_gsc_context(dev) platform_get_drvdata(to_platform_device(dev))
> +#define gsc_read(offset) readl(ctx->regs + (offset))
> +#define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset))
> +
> +/*
> + * A structure of scaler.
> + *
> + * @range: narrow, wide.
> + * @pre_shfactor: pre sclaer shift factor.
> + * @pre_hratio: horizontal ratio of the prescaler.
> + * @pre_vratio: vertical ratio of the prescaler.
> + * @main_hratio: the main scaler's horizontal ratio.
> + * @main_vratio: the main scaler's vertical ratio.
> + */
> +struct gsc_scaler {
> + bool range;
> + u32 pre_shfactor;
> + u32 pre_hratio;
> + u32 pre_vratio;
> + unsigned long main_hratio;
> + unsigned long main_vratio;
> +};
> +
> +/*
> + * A structure of gsc context.
> + *
> + * @regs_res: register resources.
> + * @regs: memory mapped io registers.
> + * @gsc_clk: gsc gate clock.
> + * @sc: scaler infomations.
> + * @id: gsc id.
> + * @irq: irq number.
> + * @rotation: supports rotation of src.
> + */
> +struct gsc_context {
> + struct exynos_drm_ipp ipp;
> + struct drm_device *drm_dev;
> + struct device *dev;
> + struct exynos_drm_ipp_task *task;
> + struct exynos_drm_ipp_formats *formats;
> + unsigned int num_formats;
> +
> + struct resource *regs_res;
> + void __iomem *regs;
> + const char **clk_names;
> + struct clk *clocks[GSC_MAX_CLOCKS];
> + int num_clocks;
> + struct gsc_scaler sc;
> + int id;
> + int irq;
> + bool rotation;
> +};
> +
> +/**
> + * struct gsc_driverdata - per device type driver data for init time.
> + *
> + * @limits: picture size limits array
> + * @clk_names: names of clocks needed by this variant
> + * @num_clocks: the number of clocks needed by this variant
> + */
> +struct gsc_driverdata {
> + const struct drm_exynos_ipp_limit *limits;
> + int num_limits;
> + const char *clk_names[GSC_MAX_CLOCKS];
> + int num_clocks;
> +};
> +
> +/* 8-tap Filter Coefficient */
> +static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = {
> + { /* Ratio <= 65536 (~8:8) */
> + { 0, 0, 0, 128, 0, 0, 0, 0 },
> + { -1, 2, -6, 127, 7, -2, 1, 0 },
> + { -1, 4, -12, 125, 16, -5, 1, 0 },
> + { -1, 5, -15, 120, 25, -8, 2, 0 },
> + { -1, 6, -18, 114, 35, -10, 3, -1 },
> + { -1, 6, -20, 107, 46, -13, 4, -1 },
> + { -2, 7, -21, 99, 57, -16, 5, -1 },
> + { -1, 6, -20, 89, 68, -18, 5, -1 },
> + { -1, 6, -20, 79, 79, -20, 6, -1 },
> + { -1, 5, -18, 68, 89, -20, 6, -1 },
> + { -1, 5, -16, 57, 99, -21, 7, -2 },
> + { -1, 4, -13, 46, 107, -20, 6, -1 },
> + { -1, 3, -10, 35, 114, -18, 6, -1 },
> + { 0, 2, -8, 25, 120, -15, 5, -1 },
> + { 0, 1, -5, 16, 125, -12, 4, -1 },
> + { 0, 1, -2, 7, 127, -6, 2, -1 }
> + }, { /* 65536 < Ratio <= 74898 (~8:7) */
> + { 3, -8, 14, 111, 13, -8, 3, 0 },
> + { 2, -6, 7, 112, 21, -10, 3, -1 },
> + { 2, -4, 1, 110, 28, -12, 4, -1 },
> + { 1, -2, -3, 106, 36, -13, 4, -1 },
> + { 1, -1, -7, 103, 44, -15, 4, -1 },
> + { 1, 1, -11, 97, 53, -16, 4, -1 },
> + { 0, 2, -13, 91, 61, -16, 4, -1 },
> + { 0, 3, -15, 85, 69, -17, 4, -1 },
> + { 0, 3, -16, 77, 77, -16, 3, 0 },
> + { -1, 4, -17, 69, 85, -15, 3, 0 },
> + { -1, 4, -16, 61, 91, -13, 2, 0 },
> + { -1, 4, -16, 53, 97, -11, 1, 1 },
> + { -1, 4, -15, 44, 103, -7, -1, 1 },
> + { -1, 4, -13, 36, 106, -3, -2, 1 },
> + { -1, 4, -12, 28, 110, 1, -4, 2 },
> + { -1, 3, -10, 21, 112, 7, -6, 2 }
> + }, { /* 74898 < Ratio <= 87381 (~8:6) */
> + { 2, -11, 25, 96, 25, -11, 2, 0 },
> + { 2, -10, 19, 96, 31, -12, 2, 0 },
> + { 2, -9, 14, 94, 37, -12, 2, 0 },
> + { 2, -8, 10, 92, 43, -12, 1, 0 },
> + { 2, -7, 5, 90, 49, -12, 1, 0 },
> + { 2, -5, 1, 86, 55, -12, 0, 1 },
> + { 2, -4, -2, 82, 61, -11, -1, 1 },
> + { 1, -3, -5, 77, 67, -9, -1, 1 },
> + { 1, -2, -7, 72, 72, -7, -2, 1 },
> + { 1, -1, -9, 67, 77, -5, -3, 1 },
> + { 1, -1, -11, 61, 82, -2, -4, 2 },
> + { 1, 0, -12, 55, 86, 1, -5, 2 },
> + { 0, 1, -12, 49, 90, 5, -7, 2 },
> + { 0, 1, -12, 43, 92, 10, -8, 2 },
> + { 0, 2, -12, 37, 94, 14, -9, 2 },
> + { 0, 2, -12, 31, 96, 19, -10, 2 }
> + }, { /* 87381 < Ratio <= 104857 (~8:5) */
> + { -1, -8, 33, 80, 33, -8, -1, 0 },
> + { -1, -8, 28, 80, 37, -7, -2, 1 },
> + { 0, -8, 24, 79, 41, -7, -2, 1 },
> + { 0, -8, 20, 78, 46, -6, -3, 1 },
> + { 0, -8, 16, 76, 50, -4, -3, 1 },
> + { 0, -7, 13, 74, 54, -3, -4, 1 },
> + { 1, -7, 10, 71, 58, -1, -5, 1 },
> + { 1, -6, 6, 68, 62, 1, -5, 1 },
> + { 1, -6, 4, 65, 65, 4, -6, 1 },
> + { 1, -5, 1, 62, 68, 6, -6, 1 },
> + { 1, -5, -1, 58, 71, 10, -7, 1 },
> + { 1, -4, -3, 54, 74, 13, -7, 0 },
> + { 1, -3, -4, 50, 76, 16, -8, 0 },
> + { 1, -3, -6, 46, 78, 20, -8, 0 },
> + { 1, -2, -7, 41, 79, 24, -8, 0 },
> + { 1, -2, -7, 37, 80, 28, -8, -1 }
> + }, { /* 104857 < Ratio <= 131072 (~8:4) */
> + { -3, 0, 35, 64, 35, 0, -3, 0 },
> + { -3, -1, 32, 64, 38, 1, -3, 0 },
> + { -2, -2, 29, 63, 41, 2, -3, 0 },
> + { -2, -3, 27, 63, 43, 4, -4, 0 },
> + { -2, -3, 24, 61, 46, 6, -4, 0 },
> + { -2, -3, 21, 60, 49, 7, -4, 0 },
> + { -1, -4, 19, 59, 51, 9, -4, -1 },
> + { -1, -4, 16, 57, 53, 12, -4, -1 },
> + { -1, -4, 14, 55, 55, 14, -4, -1 },
> + { -1, -4, 12, 53, 57, 16, -4, -1 },
> + { -1, -4, 9, 51, 59, 19, -4, -1 },
> + { 0, -4, 7, 49, 60, 21, -3, -2 },
> + { 0, -4, 6, 46, 61, 24, -3, -2 },
> + { 0, -4, 4, 43, 63, 27, -3, -2 },
> + { 0, -3, 2, 41, 63, 29, -2, -2 },
> + { 0, -3, 1, 38, 64, 32, -1, -3 }
> + }, { /* 131072 < Ratio <= 174762 (~8:3) */
> + { -1, 8, 33, 48, 33, 8, -1, 0 },
> + { -1, 7, 31, 49, 35, 9, -1, -1 },
> + { -1, 6, 30, 49, 36, 10, -1, -1 },
> + { -1, 5, 28, 48, 38, 12, -1, -1 },
> + { -1, 4, 26, 48, 39, 13, 0, -1 },
> + { -1, 3, 24, 47, 41, 15, 0, -1 },
> + { -1, 2, 23, 47, 42, 16, 0, -1 },
> + { -1, 2, 21, 45, 43, 18, 1, -1 },
> + { -1, 1, 19, 45, 45, 19, 1, -1 },
> + { -1, 1, 18, 43, 45, 21, 2, -1 },
> + { -1, 0, 16, 42, 47, 23, 2, -1 },
> + { -1, 0, 15, 41, 47, 24, 3, -1 },
> + { -1, 0, 13, 39, 48, 26, 4, -1 },
> + { -1, -1, 12, 38, 48, 28, 5, -1 },
> + { -1, -1, 10, 36, 49, 30, 6, -1 },
> + { -1, -1, 9, 35, 49, 31, 7, -1 }
> + }, { /* 174762 < Ratio <= 262144 (~8:2) */
> + { 2, 13, 30, 38, 30, 13, 2, 0 },
> + { 2, 12, 29, 38, 30, 14, 3, 0 },
> + { 2, 11, 28, 38, 31, 15, 3, 0 },
> + { 2, 10, 26, 38, 32, 16, 4, 0 },
> + { 1, 10, 26, 37, 33, 17, 4, 0 },
> + { 1, 9, 24, 37, 34, 18, 5, 0 },
> + { 1, 8, 24, 37, 34, 19, 5, 0 },
> + { 1, 7, 22, 36, 35, 20, 6, 1 },
> + { 1, 6, 21, 36, 36, 21, 6, 1 },
> + { 1, 6, 20, 35, 36, 22, 7, 1 },
> + { 0, 5, 19, 34, 37, 24, 8, 1 },
> + { 0, 5, 18, 34, 37, 24, 9, 1 },
> + { 0, 4, 17, 33, 37, 26, 10, 1 },
> + { 0, 4, 16, 32, 38, 26, 10, 2 },
> + { 0, 3, 15, 31, 38, 28, 11, 2 },
> + { 0, 3, 14, 30, 38, 29, 12, 2 }
> + }
> +};
> +
> +/* 4-tap Filter Coefficient */
> +static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = {
> + { /* Ratio <= 65536 (~8:8) */
> + { 0, 128, 0, 0 },
> + { -4, 127, 5, 0 },
> + { -6, 124, 11, -1 },
> + { -8, 118, 19, -1 },
> + { -8, 111, 27, -2 },
> + { -8, 102, 37, -3 },
> + { -8, 92, 48, -4 },
> + { -7, 81, 59, -5 },
> + { -6, 70, 70, -6 },
> + { -5, 59, 81, -7 },
> + { -4, 48, 92, -8 },
> + { -3, 37, 102, -8 },
> + { -2, 27, 111, -8 },
> + { -1, 19, 118, -8 },
> + { -1, 11, 124, -6 },
> + { 0, 5, 127, -4 }
> + }, { /* 65536 < Ratio <= 74898 (~8:7) */
> + { 8, 112, 8, 0 },
> + { 4, 111, 14, -1 },
> + { 1, 109, 20, -2 },
> + { -2, 105, 27, -2 },
> + { -3, 100, 34, -3 },
> + { -5, 93, 43, -3 },
> + { -5, 86, 51, -4 },
> + { -5, 77, 60, -4 },
> + { -5, 69, 69, -5 },
> + { -4, 60, 77, -5 },
> + { -4, 51, 86, -5 },
> + { -3, 43, 93, -5 },
> + { -3, 34, 100, -3 },
> + { -2, 27, 105, -2 },
> + { -2, 20, 109, 1 },
> + { -1, 14, 111, 4 }
> + }, { /* 74898 < Ratio <= 87381 (~8:6) */
> + { 16, 96, 16, 0 },
> + { 12, 97, 21, -2 },
> + { 8, 96, 26, -2 },
> + { 5, 93, 32, -2 },
> + { 2, 89, 39, -2 },
> + { 0, 84, 46, -2 },
> + { -1, 79, 53, -3 },
> + { -2, 73, 59, -2 },
> + { -2, 66, 66, -2 },
> + { -2, 59, 73, -2 },
> + { -3, 53, 79, -1 },
> + { -2, 46, 84, 0 },
> + { -2, 39, 89, 2 },
> + { -2, 32, 93, 5 },
> + { -2, 26, 96, 8 },
> + { -2, 21, 97, 12 }
> + }, { /* 87381 < Ratio <= 104857 (~8:5) */
> + { 22, 84, 22, 0 },
> + { 18, 85, 26, -1 },
> + { 14, 84, 31, -1 },
> + { 11, 82, 36, -1 },
> + { 8, 79, 42, -1 },
> + { 6, 76, 47, -1 },
> + { 4, 72, 52, 0 },
> + { 2, 68, 58, 0 },
> + { 1, 63, 63, 1 },
> + { 0, 58, 68, 2 },
> + { 0, 52, 72, 4 },
> + { -1, 47, 76, 6 },
> + { -1, 42, 79, 8 },
> + { -1, 36, 82, 11 },
> + { -1, 31, 84, 14 },
> + { -1, 26, 85, 18 }
> + }, { /* 104857 < Ratio <= 131072 (~8:4) */
> + { 26, 76, 26, 0 },
> + { 22, 76, 30, 0 },
> + { 19, 75, 34, 0 },
> + { 16, 73, 38, 1 },
> + { 13, 71, 43, 1 },
> + { 10, 69, 47, 2 },
> + { 8, 66, 51, 3 },
> + { 6, 63, 55, 4 },
> + { 5, 59, 59, 5 },
> + { 4, 55, 63, 6 },
> + { 3, 51, 66, 8 },
> + { 2, 47, 69, 10 },
> + { 1, 43, 71, 13 },
> + { 1, 38, 73, 16 },
> + { 0, 34, 75, 19 },
> + { 0, 30, 76, 22 }
> + }, { /* 131072 < Ratio <= 174762 (~8:3) */
> + { 29, 70, 29, 0 },
> + { 26, 68, 32, 2 },
> + { 23, 67, 36, 2 },
> + { 20, 66, 39, 3 },
> + { 17, 65, 43, 3 },
> + { 15, 63, 46, 4 },
> + { 12, 61, 50, 5 },
> + { 10, 58, 53, 7 },
> + { 8, 56, 56, 8 },
> + { 7, 53, 58, 10 },
> + { 5, 50, 61, 12 },
> + { 4, 46, 63, 15 },
> + { 3, 43, 65, 17 },
> + { 3, 39, 66, 20 },
> + { 2, 36, 67, 23 },
> + { 2, 32, 68, 26 }
> + }, { /* 174762 < Ratio <= 262144 (~8:2) */
> + { 32, 64, 32, 0 },
> + { 28, 63, 34, 3 },
> + { 25, 62, 37, 4 },
> + { 22, 62, 40, 4 },
> + { 19, 61, 43, 5 },
> + { 17, 59, 46, 6 },
> + { 15, 58, 48, 7 },
> + { 13, 55, 51, 9 },
> + { 11, 53, 53, 11 },
> + { 9, 51, 55, 13 },
> + { 7, 48, 58, 15 },
> + { 6, 46, 59, 17 },
> + { 5, 43, 61, 19 },
> + { 4, 40, 62, 22 },
> + { 4, 37, 62, 25 },
> + { 3, 34, 63, 28 }
> + }
> +};
> +
> +static int gsc_sw_reset(struct gsc_context *ctx)
> +{
> + u32 cfg;
> + int count = GSC_RESET_TIMEOUT;
> +
> + /* s/w reset */
> + cfg = (GSC_SW_RESET_SRESET);
> + gsc_write(cfg, GSC_SW_RESET);
> +
> + /* wait s/w reset complete */
> + while (count--) {
> + cfg = gsc_read(GSC_SW_RESET);
> + if (!cfg)
> + break;
> + usleep_range(1000, 2000);
> + }
> +
> + if (cfg) {
> + DRM_ERROR("failed to reset gsc h/w.\n");
> + return -EBUSY;
> + }
> +
> + /* reset sequence */
> + cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
> + cfg |= (GSC_IN_BASE_ADDR_MASK |
> + GSC_IN_BASE_ADDR_PINGPONG(0));
> + gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
> + gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
> + gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
> +
> + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> + cfg |= (GSC_OUT_BASE_ADDR_MASK |
> + GSC_OUT_BASE_ADDR_PINGPONG(0));
> + gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
> + gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
> + gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
> +
> + return 0;
> +}
> +
> +static void gsc_handle_irq(struct gsc_context *ctx, bool enable,
> + bool overflow, bool done)
> +{
> + u32 cfg;
> +
> + DRM_DEBUG_KMS("enable[%d]overflow[%d]level[%d]\n",
> + enable, overflow, done);
> +
> + cfg = gsc_read(GSC_IRQ);
> + cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK);
> +
> + if (enable)
> + cfg |= GSC_IRQ_ENABLE;
> + else
> + cfg &= ~GSC_IRQ_ENABLE;
> +
> + if (overflow)
> + cfg &= ~GSC_IRQ_OR_MASK;
> + else
> + cfg |= GSC_IRQ_OR_MASK;
> +
> + if (done)
> + cfg &= ~GSC_IRQ_FRMDONE_MASK;
> + else
> + cfg |= GSC_IRQ_FRMDONE_MASK;
> +
> + gsc_write(cfg, GSC_IRQ);
> +}
> +
> +
> +static void gsc_src_set_fmt(struct gsc_context *ctx, u32 fmt)
> +{
> + u32 cfg;
> +
> + DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
> +
> + cfg = gsc_read(GSC_IN_CON);
> + cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK |
> + GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK |
> + GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE |
> + GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK);
> +
> + switch (fmt) {
> + case DRM_FORMAT_RGB565:
> + cfg |= GSC_IN_RGB565;
> + break;
> + case DRM_FORMAT_XRGB8888:
> + cfg |= GSC_IN_XRGB8888;
> + break;
> + case DRM_FORMAT_BGRX8888:
> + cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP);
> + break;
> + case DRM_FORMAT_YUYV:
> + cfg |= (GSC_IN_YUV422_1P |
> + GSC_IN_YUV422_1P_ORDER_LSB_Y |
> + GSC_IN_CHROMA_ORDER_CBCR);
> + break;
> + case DRM_FORMAT_YVYU:
> + cfg |= (GSC_IN_YUV422_1P |
> + GSC_IN_YUV422_1P_ORDER_LSB_Y |
> + GSC_IN_CHROMA_ORDER_CRCB);
> + break;
> + case DRM_FORMAT_UYVY:
> + cfg |= (GSC_IN_YUV422_1P |
> + GSC_IN_YUV422_1P_OEDER_LSB_C |
> + GSC_IN_CHROMA_ORDER_CBCR);
> + break;
> + case DRM_FORMAT_VYUY:
> + cfg |= (GSC_IN_YUV422_1P |
> + GSC_IN_YUV422_1P_OEDER_LSB_C |
> + GSC_IN_CHROMA_ORDER_CRCB);
> + break;
> + case DRM_FORMAT_NV21:
> + case DRM_FORMAT_NV61:
> + cfg |= (GSC_IN_CHROMA_ORDER_CRCB |
> + GSC_IN_YUV420_2P);
> + break;
> + case DRM_FORMAT_YUV422:
> + cfg |= GSC_IN_YUV422_3P;
> + break;
> + case DRM_FORMAT_YUV420:
> + case DRM_FORMAT_YVU420:
> + cfg |= GSC_IN_YUV420_3P;
> + break;
> + case DRM_FORMAT_NV12:
> + case DRM_FORMAT_NV16:
> + cfg |= (GSC_IN_CHROMA_ORDER_CBCR |
> + GSC_IN_YUV420_2P);
> + break;
> + }
> +
> + gsc_write(cfg, GSC_IN_CON);
> +}
> +
> +static void gsc_src_set_transf(struct gsc_context *ctx, unsigned int rotation)
> +{
> + unsigned int degree = rotation & DRM_MODE_ROTATE_MASK;
> + u32 cfg;
> +
> + cfg = gsc_read(GSC_IN_CON);
> + cfg &= ~GSC_IN_ROT_MASK;
> +
> + switch (degree) {
> + case DRM_MODE_ROTATE_0:
> + if (rotation & DRM_MODE_REFLECT_Y)
> + cfg |= GSC_IN_ROT_XFLIP;
> + if (rotation & DRM_MODE_REFLECT_X)
> + cfg |= GSC_IN_ROT_YFLIP;
> + break;
> + case DRM_MODE_ROTATE_90:
> + if (rotation & DRM_MODE_REFLECT_Y)
> + cfg |= GSC_IN_ROT_90_XFLIP;
> + else if (rotation & DRM_MODE_REFLECT_X)
> + cfg |= GSC_IN_ROT_90_YFLIP;
> + else
> + cfg |= GSC_IN_ROT_90;
> + break;
> + case DRM_MODE_ROTATE_180:
> + cfg |= GSC_IN_ROT_180;
> + if (rotation & DRM_MODE_REFLECT_Y)
> + cfg &= ~GSC_IN_ROT_XFLIP;
> + if (rotation & DRM_MODE_REFLECT_X)
> + cfg &= ~GSC_IN_ROT_YFLIP;
> + break;
> + case DRM_MODE_ROTATE_270:
> + cfg |= GSC_IN_ROT_270;
> + if (rotation & DRM_MODE_REFLECT_Y)
> + cfg &= ~GSC_IN_ROT_XFLIP;
> + if (rotation & DRM_MODE_REFLECT_X)
> + cfg &= ~GSC_IN_ROT_YFLIP;
> + break;
> + }
> +
> + gsc_write(cfg, GSC_IN_CON);
> +
> + ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
> +}
> +
> +static void gsc_src_set_size(struct gsc_context *ctx,
> + struct exynos_drm_ipp_buffer *buf)
> +{
> + struct gsc_scaler *sc = &ctx->sc;
> + u32 cfg;
> +
> + /* pixel offset */
> + cfg = (GSC_SRCIMG_OFFSET_X(buf->rect.x) |
> + GSC_SRCIMG_OFFSET_Y(buf->rect.y));
> + gsc_write(cfg, GSC_SRCIMG_OFFSET);
> +
> + /* cropped size */
> + cfg = (GSC_CROPPED_WIDTH(buf->rect.w) |
> + GSC_CROPPED_HEIGHT(buf->rect.h));
> + gsc_write(cfg, GSC_CROPPED_SIZE);
> +
> + /* original size */
> + cfg = gsc_read(GSC_SRCIMG_SIZE);
> + cfg &= ~(GSC_SRCIMG_HEIGHT_MASK |
> + GSC_SRCIMG_WIDTH_MASK);
> +
> + cfg |= (GSC_SRCIMG_WIDTH(buf->buf.width) |
> + GSC_SRCIMG_HEIGHT(buf->buf.height));
> +
> + gsc_write(cfg, GSC_SRCIMG_SIZE);
> +
> + cfg = gsc_read(GSC_IN_CON);
> + cfg &= ~GSC_IN_RGB_TYPE_MASK;
> +
> + if (buf->rect.w >= GSC_WIDTH_ITU_709)
> + if (sc->range)
> + cfg |= GSC_IN_RGB_HD_WIDE;
> + else
> + cfg |= GSC_IN_RGB_HD_NARROW;
> + else
> + if (sc->range)
> + cfg |= GSC_IN_RGB_SD_WIDE;
> + else
> + cfg |= GSC_IN_RGB_SD_NARROW;
> +
> + gsc_write(cfg, GSC_IN_CON);
> +}
> +
> +static void gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
> + bool enqueue)
> +{
> + bool masked = !enqueue;
> + u32 cfg;
> + u32 mask = 0x00000001 << buf_id;
> +
> + /* mask register set */
> + cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
> +
> + /* sequence id */
> + cfg &= ~mask;
> + cfg |= masked << buf_id;
> + gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
> + gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
> + gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
> +}
> +
> +static void gsc_src_set_addr(struct gsc_context *ctx, u32 buf_id,
> + struct exynos_drm_ipp_buffer *buf)
> +{
> + /* address register set */
> + gsc_write(buf->dma_addr[0], GSC_IN_BASE_ADDR_Y(buf_id));
> + gsc_write(buf->dma_addr[1], GSC_IN_BASE_ADDR_CB(buf_id));
> + gsc_write(buf->dma_addr[2], GSC_IN_BASE_ADDR_CR(buf_id));
> +
> + gsc_src_set_buf_seq(ctx, buf_id, true);
> +}
> +
> +static void gsc_dst_set_fmt(struct gsc_context *ctx, u32 fmt)
> +{
> + u32 cfg;
> +
> + DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
> +
> + cfg = gsc_read(GSC_OUT_CON);
> + cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK |
> + GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK |
> + GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK |
> + GSC_OUT_GLOBAL_ALPHA_MASK);
> +
> + switch (fmt) {
> + case DRM_FORMAT_RGB565:
> + cfg |= GSC_OUT_RGB565;
> + break;
> + case DRM_FORMAT_XRGB8888:
> + cfg |= GSC_OUT_XRGB8888;
> + break;
> + case DRM_FORMAT_BGRX8888:
> + cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP);
> + break;
> + case DRM_FORMAT_YUYV:
> + cfg |= (GSC_OUT_YUV422_1P |
> + GSC_OUT_YUV422_1P_ORDER_LSB_Y |
> + GSC_OUT_CHROMA_ORDER_CBCR);
> + break;
> + case DRM_FORMAT_YVYU:
> + cfg |= (GSC_OUT_YUV422_1P |
> + GSC_OUT_YUV422_1P_ORDER_LSB_Y |
> + GSC_OUT_CHROMA_ORDER_CRCB);
> + break;
> + case DRM_FORMAT_UYVY:
> + cfg |= (GSC_OUT_YUV422_1P |
> + GSC_OUT_YUV422_1P_OEDER_LSB_C |
> + GSC_OUT_CHROMA_ORDER_CBCR);
> + break;
> + case DRM_FORMAT_VYUY:
> + cfg |= (GSC_OUT_YUV422_1P |
> + GSC_OUT_YUV422_1P_OEDER_LSB_C |
> + GSC_OUT_CHROMA_ORDER_CRCB);
> + break;
> + case DRM_FORMAT_NV21:
> + case DRM_FORMAT_NV61:
> + cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P);
> + break;
> + case DRM_FORMAT_YUV422:
> + case DRM_FORMAT_YUV420:
> + case DRM_FORMAT_YVU420:
> + cfg |= GSC_OUT_YUV420_3P;
> + break;
> + case DRM_FORMAT_NV12:
> + case DRM_FORMAT_NV16:
> + cfg |= (GSC_OUT_CHROMA_ORDER_CBCR |
> + GSC_OUT_YUV420_2P);
> + break;
> + }
> +
> + gsc_write(cfg, GSC_OUT_CON);
> +}
> +
> +static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio)
> +{
> + DRM_DEBUG_KMS("src[%d]dst[%d]\n", src, dst);
> +
> + if (src >= dst * 8) {
> + DRM_ERROR("failed to make ratio and shift.\n");
> + return -EINVAL;
> + } else if (src >= dst * 4)
> + *ratio = 4;
> + else if (src >= dst * 2)
> + *ratio = 2;
> + else
> + *ratio = 1;
> +
> + return 0;
> +}
> +
> +static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor)
> +{
> + if (hratio == 4 && vratio == 4)
> + *shfactor = 4;
> + else if ((hratio == 4 && vratio == 2) ||
> + (hratio == 2 && vratio == 4))
> + *shfactor = 3;
> + else if ((hratio == 4 && vratio == 1) ||
> + (hratio == 1 && vratio == 4) ||
> + (hratio == 2 && vratio == 2))
> + *shfactor = 2;
> + else if (hratio == 1 && vratio == 1)
> + *shfactor = 0;
> + else
> + *shfactor = 1;
> +}
> +
> +static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc,
> + struct drm_exynos_ipp_task_rect *src, struct drm_exynos_ipp_task_rect *dst)
> +{
> + u32 cfg;
> + u32 src_w, src_h, dst_w, dst_h;
> + int ret = 0;
> +
> + src_w = src->w;
> + src_h = src->h;
> +
> + if (ctx->rotation) {
> + dst_w = dst->h;
> + dst_h = dst->w;
> + } else {
> + dst_w = dst->w;
> + dst_h = dst->h;
> + }
> +
> + ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio);
> + if (ret) {
> + dev_err(ctx->dev, "failed to get ratio horizontal.\n");
> + return ret;
> + }
> +
> + ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio);
> + if (ret) {
> + dev_err(ctx->dev, "failed to get ratio vertical.\n");
> + return ret;
> + }
> +
> + DRM_DEBUG_KMS("pre_hratio[%d]pre_vratio[%d]\n",
> + sc->pre_hratio, sc->pre_vratio);
> +
> + sc->main_hratio = (src_w << 16) / dst_w;
> + sc->main_vratio = (src_h << 16) / dst_h;
> +
> + DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
> + sc->main_hratio, sc->main_vratio);
> +
> + gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio,
> + &sc->pre_shfactor);
> +
> + DRM_DEBUG_KMS("pre_shfactor[%d]\n", sc->pre_shfactor);
> +
> + cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) |
> + GSC_PRESC_H_RATIO(sc->pre_hratio) |
> + GSC_PRESC_V_RATIO(sc->pre_vratio));
> + gsc_write(cfg, GSC_PRE_SCALE_RATIO);
> +
> + return ret;
> +}
> +
> +static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio)
> +{
> + int i, j, k, sc_ratio;
> +
> + if (main_hratio <= GSC_SC_UP_MAX_RATIO)
> + sc_ratio = 0;
> + else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8)
> + sc_ratio = 1;
> + else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8)
> + sc_ratio = 2;
> + else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8)
> + sc_ratio = 3;
> + else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8)
> + sc_ratio = 4;
> + else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8)
> + sc_ratio = 5;
> + else
> + sc_ratio = 6;
> +
> + for (i = 0; i < GSC_COEF_PHASE; i++)
> + for (j = 0; j < GSC_COEF_H_8T; j++)
> + for (k = 0; k < GSC_COEF_DEPTH; k++)
> + gsc_write(h_coef_8t[sc_ratio][i][j],
> + GSC_HCOEF(i, j, k));
> +}
> +
> +static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio)
> +{
> + int i, j, k, sc_ratio;
> +
> + if (main_vratio <= GSC_SC_UP_MAX_RATIO)
> + sc_ratio = 0;
> + else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8)
> + sc_ratio = 1;
> + else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8)
> + sc_ratio = 2;
> + else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8)
> + sc_ratio = 3;
> + else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8)
> + sc_ratio = 4;
> + else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8)
> + sc_ratio = 5;
> + else
> + sc_ratio = 6;
> +
> + for (i = 0; i < GSC_COEF_PHASE; i++)
> + for (j = 0; j < GSC_COEF_V_4T; j++)
> + for (k = 0; k < GSC_COEF_DEPTH; k++)
> + gsc_write(v_coef_4t[sc_ratio][i][j],
> + GSC_VCOEF(i, j, k));
> +}
> +
> +static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc)
> +{
> + u32 cfg;
> +
> + DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
> + sc->main_hratio, sc->main_vratio);
> +
> + gsc_set_h_coef(ctx, sc->main_hratio);
> + cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio);
> + gsc_write(cfg, GSC_MAIN_H_RATIO);
> +
> + gsc_set_v_coef(ctx, sc->main_vratio);
> + cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio);
> + gsc_write(cfg, GSC_MAIN_V_RATIO);
> +}
> +
> +static void gsc_dst_set_size(struct gsc_context *ctx,
> + struct exynos_drm_ipp_buffer *buf)
> +{
> + struct gsc_scaler *sc = &ctx->sc;
> + u32 cfg;
> +
> + /* pixel offset */
> + cfg = (GSC_DSTIMG_OFFSET_X(buf->rect.x) |
> + GSC_DSTIMG_OFFSET_Y(buf->rect.y));
> + gsc_write(cfg, GSC_DSTIMG_OFFSET);
> +
> + /* scaled size */
> + if (ctx->rotation)
> + cfg = (GSC_SCALED_WIDTH(buf->rect.h) |
> + GSC_SCALED_HEIGHT(buf->rect.w));
> + else
> + cfg = (GSC_SCALED_WIDTH(buf->rect.w) |
> + GSC_SCALED_HEIGHT(buf->rect.h));
> + gsc_write(cfg, GSC_SCALED_SIZE);
> +
> + /* original size */
> + cfg = gsc_read(GSC_DSTIMG_SIZE);
> + cfg &= ~(GSC_DSTIMG_HEIGHT_MASK | GSC_DSTIMG_WIDTH_MASK);
> + cfg |= GSC_DSTIMG_WIDTH(buf->buf.width) |
> + GSC_DSTIMG_HEIGHT(buf->buf.height);
> + gsc_write(cfg, GSC_DSTIMG_SIZE);
> +
> + cfg = gsc_read(GSC_OUT_CON);
> + cfg &= ~GSC_OUT_RGB_TYPE_MASK;
> +
> + if (buf->rect.w >= GSC_WIDTH_ITU_709)
> + if (sc->range)
> + cfg |= GSC_OUT_RGB_HD_WIDE;
> + else
> + cfg |= GSC_OUT_RGB_HD_NARROW;
> + else
> + if (sc->range)
> + cfg |= GSC_OUT_RGB_SD_WIDE;
> + else
> + cfg |= GSC_OUT_RGB_SD_NARROW;
> +
> + gsc_write(cfg, GSC_OUT_CON);
> +}
> +
> +static int gsc_dst_get_buf_seq(struct gsc_context *ctx)
> +{
> + u32 cfg, i, buf_num = GSC_REG_SZ;
> + u32 mask = 0x00000001;
> +
> + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> +
> + for (i = 0; i < GSC_REG_SZ; i++)
> + if (cfg & (mask << i))
> + buf_num--;
> +
> + DRM_DEBUG_KMS("buf_num[%d]\n", buf_num);
> +
> + return buf_num;
> +}
> +
> +static void gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
> + bool enqueue)
> +{
> + bool masked = !enqueue;
> + u32 cfg;
> + u32 mask = 0x00000001 << buf_id;
> +
> + /* mask register set */
> + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> +
> + /* sequence id */
> + cfg &= ~mask;
> + cfg |= masked << buf_id;
> + gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
> + gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
> + gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
> +
> + /* interrupt enable */
> + if (enqueue && gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START)
> + gsc_handle_irq(ctx, true, false, true);
> +
> + /* interrupt disable */
> + if (!enqueue && gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP)
> + gsc_handle_irq(ctx, false, false, true);
> +}
> +
> +static void gsc_dst_set_addr(struct gsc_context *ctx,
> + u32 buf_id, struct exynos_drm_ipp_buffer *buf)
> +{
> + /* address register set */
> + gsc_write(buf->dma_addr[0], GSC_OUT_BASE_ADDR_Y(buf_id));
> + gsc_write(buf->dma_addr[1], GSC_OUT_BASE_ADDR_CB(buf_id));
> + gsc_write(buf->dma_addr[2], GSC_OUT_BASE_ADDR_CR(buf_id));
> +
> + gsc_dst_set_buf_seq(ctx, buf_id, true);
> +}
> +
> +static int gsc_get_src_buf_index(struct gsc_context *ctx)
> +{
> + u32 cfg, curr_index, i;
> + u32 buf_id = GSC_MAX_SRC;
> +
> + DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
> +
> + cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
> + curr_index = GSC_IN_CURR_GET_INDEX(cfg);
> +
> + for (i = curr_index; i < GSC_MAX_SRC; i++) {
> + if (!((cfg >> i) & 0x1)) {
> + buf_id = i;
> + break;
> + }
> + }
> +
> + DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
> + curr_index, buf_id);
> +
> + if (buf_id == GSC_MAX_SRC) {
> + DRM_ERROR("failed to get in buffer index.\n");
> + return -EINVAL;
> + }
> +
> + gsc_src_set_buf_seq(ctx, buf_id, false);
> +
> + return buf_id;
> +}
> +
> +static int gsc_get_dst_buf_index(struct gsc_context *ctx)
> +{
> + u32 cfg, curr_index, i;
> + u32 buf_id = GSC_MAX_DST;
> +
> + DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
> +
> + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
> + curr_index = GSC_OUT_CURR_GET_INDEX(cfg);
> +
> + for (i = curr_index; i < GSC_MAX_DST; i++) {
> + if (!((cfg >> i) & 0x1)) {
> + buf_id = i;
> + break;
> + }
> + }
> +
> + if (buf_id == GSC_MAX_DST) {
> + DRM_ERROR("failed to get out buffer index.\n");
> + return -EINVAL;
> + }
> +
> + gsc_dst_set_buf_seq(ctx, buf_id, false);
> +
> + DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
> + curr_index, buf_id);
> +
> + return buf_id;
> +}
> +
> +static irqreturn_t gsc_irq_handler(int irq, void *dev_id)
> +{
> + struct gsc_context *ctx = dev_id;
> + u32 status;
> + int err = 0;
> +
> + DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
> +
> + status = gsc_read(GSC_IRQ);
> + if (status & GSC_IRQ_STATUS_OR_IRQ) {
> + dev_err(ctx->dev, "occurred overflow at %d, status 0x%x.\n",
> + ctx->id, status);
> + err = -EINVAL;
> + }
> +
> + if (status & GSC_IRQ_STATUS_OR_FRM_DONE) {
> + int src_buf_id, dst_buf_id;
> +
> + dev_dbg(ctx->dev, "occurred frame done at %d, status 0x%x.\n",
> + ctx->id, status);
> +
> + src_buf_id = gsc_get_src_buf_index(ctx);
> + dst_buf_id = gsc_get_dst_buf_index(ctx);
> +
> + DRM_DEBUG_KMS("buf_id_src[%d]buf_id_dst[%d]\n", src_buf_id,
> + dst_buf_id);
> +
> + if (src_buf_id < 0 || dst_buf_id < 0)
> + err = -EINVAL;
> + }
> +
> + if (ctx->task) {
> + struct exynos_drm_ipp_task *task = ctx->task;
> +
> + ctx->task = NULL;
> + pm_runtime_mark_last_busy(ctx->dev);
> + pm_runtime_put_autosuspend(ctx->dev);
> + exynos_drm_ipp_task_done(task, err);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int gsc_reset(struct gsc_context *ctx)
> +{
> + struct gsc_scaler *sc = &ctx->sc;
> + int ret;
> +
> + /* reset h/w block */
> + ret = gsc_sw_reset(ctx);
> + if (ret < 0) {
> + dev_err(ctx->dev, "failed to reset hardware.\n");
> + return ret;
> + }
> +
> + /* scaler setting */
> + memset(&ctx->sc, 0x0, sizeof(ctx->sc));
> + sc->range = true;
> +
> + return 0;
> +}
> +
> +static void gsc_start(struct gsc_context *ctx)
> +{
> + u32 cfg;
> +
> + gsc_handle_irq(ctx, true, false, true);
> +
> + /* enable one shot */
> + cfg = gsc_read(GSC_ENABLE);
> + cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK |
> + GSC_ENABLE_CLK_GATE_MODE_MASK);
> + cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT;
> + gsc_write(cfg, GSC_ENABLE);
> +
> + /* src dma memory */
> + cfg = gsc_read(GSC_IN_CON);
> + cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
> + cfg |= GSC_IN_PATH_MEMORY;
> + gsc_write(cfg, GSC_IN_CON);
> +
> + /* dst dma memory */
> + cfg = gsc_read(GSC_OUT_CON);
> + cfg |= GSC_OUT_PATH_MEMORY;
> + gsc_write(cfg, GSC_OUT_CON);
> +
> + gsc_set_scaler(ctx, &ctx->sc);
> +
> + cfg = gsc_read(GSC_ENABLE);
> + cfg |= GSC_ENABLE_ON;
> + gsc_write(cfg, GSC_ENABLE);
> +}
> +
> +static int gsc_commit(struct exynos_drm_ipp *ipp,
> + struct exynos_drm_ipp_task *task)
> +{
> + struct gsc_context *ctx = container_of(ipp, struct gsc_context, ipp);
> + int ret;
> +
> + pm_runtime_get_sync(ctx->dev);
> + ctx->task = task;
> +
> + ret = gsc_reset(ctx);
> + if (ret) {
> + pm_runtime_put_autosuspend(ctx->dev);
> + ctx->task = NULL;
> + return ret;
> + }
> +
> + gsc_src_set_fmt(ctx, task->src.buf.fourcc);
> + gsc_src_set_transf(ctx, task->transform.rotation);
> + gsc_src_set_size(ctx, &task->src);
> + gsc_src_set_addr(ctx, 0, &task->src);
> + gsc_dst_set_fmt(ctx, task->dst.buf.fourcc);
> + gsc_dst_set_size(ctx, &task->dst);
> + gsc_dst_set_addr(ctx, 0, &task->dst);
> + gsc_set_prescaler(ctx, &ctx->sc, &task->src.rect, &task->dst.rect);
> + gsc_start(ctx);
> +
> + return 0;
> +}
> +
> +static void gsc_abort(struct exynos_drm_ipp *ipp,
> + struct exynos_drm_ipp_task *task)
> +{
> + struct gsc_context *ctx =
> + container_of(ipp, struct gsc_context, ipp);
> +
> + gsc_reset(ctx);
> + if (ctx->task) {
> + struct exynos_drm_ipp_task *task = ctx->task;
> +
> + ctx->task = NULL;
> + pm_runtime_mark_last_busy(ctx->dev);
> + pm_runtime_put_autosuspend(ctx->dev);
> + exynos_drm_ipp_task_done(task, -EIO);
> + }
> +}
> +
> +static struct exynos_drm_ipp_funcs ipp_funcs = {
> + .commit = gsc_commit,
> + .abort = gsc_abort,
> +};
> +
> +static int gsc_bind(struct device *dev, struct device *master, void *data)
> +{
> + struct gsc_context *ctx = dev_get_drvdata(dev);
> + struct drm_device *drm_dev = data;
> + struct exynos_drm_ipp *ipp = &ctx->ipp;
> +
> + ctx->drm_dev = drm_dev;
> + drm_iommu_attach_device(drm_dev, dev);
> +
> + exynos_drm_ipp_register(drm_dev, ipp, &ipp_funcs,
> + DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE |
> + DRM_EXYNOS_IPP_CAP_SCALE | DRM_EXYNOS_IPP_CAP_CONVERT,
> + ctx->formats, ctx->num_formats, "gsc");
> +
> + dev_info(dev, "The exynos gscaler has been probed successfully\n");
> +
> + return 0;
> +}
> +
> +static void gsc_unbind(struct device *dev, struct device *master,
> + void *data)
> +{
> + struct gsc_context *ctx = dev_get_drvdata(dev);
> + struct drm_device *drm_dev = data;
> + struct exynos_drm_ipp *ipp = &ctx->ipp;
> +
> + exynos_drm_ipp_unregister(drm_dev, ipp);
> + drm_iommu_detach_device(drm_dev, dev);
> +}
> +
> +static const struct component_ops gsc_component_ops = {
> + .bind = gsc_bind,
> + .unbind = gsc_unbind,
> +};
> +
> +static const unsigned int gsc_formats[] = {
> + DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_BGRX8888,
> + DRM_FORMAT_NV12, DRM_FORMAT_NV16, DRM_FORMAT_NV21, DRM_FORMAT_NV61,
> + DRM_FORMAT_UYVY, DRM_FORMAT_VYUY, DRM_FORMAT_YUYV, DRM_FORMAT_YVYU,
> + DRM_FORMAT_YUV420, DRM_FORMAT_YVU420, DRM_FORMAT_YUV422,
> +};
> +
> +static int gsc_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct gsc_driverdata *driver_data;
> + struct exynos_drm_ipp_formats *formats;
> + struct gsc_context *ctx;
> + struct resource *res;
> + int ret, i;
> +
> + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + formats = devm_kzalloc(dev, sizeof(*formats) *
> + (ARRAY_SIZE(gsc_formats)), GFP_KERNEL);
> + if (!formats)
> + return -ENOMEM;
> +
> + driver_data = (struct gsc_driverdata *)of_device_get_match_data(dev);
> + ctx->dev = dev;
> + ctx->num_clocks = driver_data->num_clocks;
> + ctx->clk_names = driver_data->clk_names;
> +
> + for (i = 0; i < ARRAY_SIZE(gsc_formats); i++) {
> + formats[i].fourcc = gsc_formats[i];
> + formats[i].type = DRM_EXYNOS_IPP_FORMAT_SOURCE |
> + DRM_EXYNOS_IPP_FORMAT_DESTINATION;
> + formats[i].limits = driver_data->limits;
> + formats[i].num_limits = driver_data->num_limits;
> + }
> + ctx->formats = formats;
> + ctx->num_formats = ARRAY_SIZE(gsc_formats);
> +
> + /* clock control */
> + for (i = 0; i < ctx->num_clocks; i++) {
> + ctx->clocks[i] = devm_clk_get(dev, ctx->clk_names[i]);
> + if (IS_ERR(ctx->clocks[i])) {
> + dev_err(dev, "failed to get clock: %s\n",
> + ctx->clk_names[i]);
> + return PTR_ERR(ctx->clocks[i]);
> + }
> + }
> +
> + /* resource memory */
> + ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + ctx->regs = devm_ioremap_resource(dev, ctx->regs_res);
> + if (IS_ERR(ctx->regs))
> + return PTR_ERR(ctx->regs);
> +
> + /* resource irq */
> + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> + if (!res) {
> + dev_err(dev, "failed to request irq resource.\n");
> + return -ENOENT;
> + }
> +
> + ctx->irq = res->start;
> + ret = devm_request_irq(dev, ctx->irq, gsc_irq_handler, 0,
> + dev_name(dev), ctx);
> + if (ret < 0) {
> + dev_err(dev, "failed to request irq.\n");
> + return ret;
> + }
> +
> + /* context initailization */
> + ctx->id = pdev->id;
> +
> + platform_set_drvdata(pdev, ctx);
> +
> + pm_runtime_use_autosuspend(dev);
> + pm_runtime_set_autosuspend_delay(dev, GSC_AUTOSUSPEND_DELAY);
> + pm_runtime_enable(dev);
> +
> + ret = component_add(dev, &gsc_component_ops);
> + if (ret)
> + goto err_pm_dis;
> +
> + dev_info(dev, "drm gsc registered successfully.\n");
> +
> + return 0;
> +
> +err_pm_dis:
> + pm_runtime_dont_use_autosuspend(dev);
> + pm_runtime_disable(dev);
> + return ret;
> +}
> +
> +static int gsc_remove(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> +
> + pm_runtime_dont_use_autosuspend(dev);
> + pm_runtime_disable(dev);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused gsc_runtime_suspend(struct device *dev)
> +{
> + struct gsc_context *ctx = get_gsc_context(dev);
> + int i;
> +
> + DRM_DEBUG_KMS("id[%d]\n", ctx->id);
> +
> + for (i = ctx->num_clocks - 1; i >= 0; i--)
> + clk_disable_unprepare(ctx->clocks[i]);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused gsc_runtime_resume(struct device *dev)
> +{
> + struct gsc_context *ctx = get_gsc_context(dev);
> + int i;
> +
> + DRM_DEBUG_KMS("id[%d]\n", ctx->id);
> +
> + for (i = 0; i < ctx->num_clocks; i++) {
> + int ret = clk_prepare_enable(ctx->clocks[i]);
> + if (ret) {
> + while (--i > 0)
> + clk_disable_unprepare(ctx->clocks[i]);
> + return ret;
> + }
> + }
> + return 0;
> +}
> +
> +static const struct dev_pm_ops gsc_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> + pm_runtime_force_resume)
> + SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL)
> +};
> +
> +static const struct drm_exynos_ipp_limit gsc_5250_limits[] = {
> + { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 4800, 8 }, .v = { 16, 3344, 8 }) },
> + { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) },
> + { IPP_SIZE_LIMIT(ROTATED, .h = { 32, 2048 }, .v = { 16, 2048 }) },
> + { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 },
> + .v = { (1 << 16) / 16, (1 << 16) * 8 }) },
> +};
> +
> +static const struct drm_exynos_ipp_limit gsc_5420_limits[] = {
> + { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 4800, 8 }, .v = { 16, 3344, 8 }) },
> + { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) },
> + { IPP_SIZE_LIMIT(ROTATED, .h = { 16, 2016 }, .v = { 8, 2016 }) },
> + { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 },
> + .v = { (1 << 16) / 16, (1 << 16) * 8 }) },
> +};
> +
> +static const struct drm_exynos_ipp_limit gsc_5433_limits[] = {
> + { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 8191, 8 }, .v = { 16, 8191, 8 }) },
> + { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) },
> + { IPP_SIZE_LIMIT(ROTATED, .h = { 16, 2047 }, .v = { 8, 2047 }) },
> + { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 },
> + .v = { (1 << 16) / 16, (1 << 16) * 8 }) },
> +};
> +
> +static struct gsc_driverdata gsc_exynos5250_drvdata = {
> + .clk_names = {"gscl"},
> + .num_clocks = 1,
> + .limits = gsc_5250_limits,
> + .num_limits = ARRAY_SIZE(gsc_5250_limits),
> +};
> +
> +static struct gsc_driverdata gsc_exynos5420_drvdata = {
> + .clk_names = {"gscl"},
> + .num_clocks = 1,
> + .limits = gsc_5420_limits,
> + .num_limits = ARRAY_SIZE(gsc_5420_limits),
> +};
> +
> +static struct gsc_driverdata gsc_exynos5433_drvdata = {
> + .clk_names = {"pclk", "aclk", "aclk_xiu", "aclk_gsclbend"},
> + .num_clocks = 4,
> + .limits = gsc_5433_limits,
> + .num_limits = ARRAY_SIZE(gsc_5433_limits),
> +};
> +
> +static const struct of_device_id exynos_drm_gsc_of_match[] = {
> + {
> + .compatible = "samsung,exynos5-gsc",
> + .data = &gsc_exynos5250_drvdata,
> + }, {
> + .compatible = "samsung,exynos5250-gsc",
> + .data = &gsc_exynos5250_drvdata,
> + }, {
> + .compatible = "samsung,exynos5420-gsc",
> + .data = &gsc_exynos5420_drvdata,
> + }, {
> + .compatible = "samsung,exynos5433-gsc",
> + .data = &gsc_exynos5433_drvdata,
> + }, {
> + },
> +};
> +MODULE_DEVICE_TABLE(of, exynos_drm_gsc_of_match);
> +
> +struct platform_driver gsc_driver = {
> + .probe = gsc_probe,
> + .remove = gsc_remove,
> + .driver = {
> + .name = "exynos-drm-gsc",
> + .owner = THIS_MODULE,
> + .pm = &gsc_pm_ops,
> + .of_match_table = of_match_ptr(exynos_drm_gsc_of_match),
> + },
> +};
> +
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.h b/drivers/gpu/drm/exynos/exynos_drm_gsc.h
> deleted file mode 100644
> index 29ec1c5efcf2..000000000000
> --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.h
> +++ /dev/null
> @@ -1,24 +0,0 @@
> -/*
> - * Copyright (c) 2012 Samsung Electronics Co., Ltd.
> - *
> - * Authors:
> - * Eunchul Kim <chulspro.kim@samsung.com>
> - * Jinyoung Jeon <jy0.jeon@samsung.com>
> - * Sangmin Lee <lsmin.lee@samsung.com>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License as published by the
> - * Free Software Foundation; either version 2 of the License, or (at your
> - * option) any later version.
> - */
> -
> -#ifndef _EXYNOS_DRM_GSC_H_
> -#define _EXYNOS_DRM_GSC_H_
> -
> -/*
> - * TODO
> - * FIMD output interface notifier callback.
> - * Mixer output interface notifier callback.
> - */
> -
> -#endif /* _EXYNOS_DRM_GSC_H_ */
>
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig index c10c9ca0d8b4..9b66a9838dca 100644 --- a/drivers/gpu/drm/exynos/Kconfig +++ b/drivers/gpu/drm/exynos/Kconfig @@ -111,7 +111,8 @@ config DRM_EXYNOS_ROTATOR config DRM_EXYNOS_GSC bool "GScaler" - depends on BROKEN && ARCH_EXYNOS5 && VIDEO_SAMSUNG_EXYNOS_GSC=n + depends on VIDEO_SAMSUNG_EXYNOS_GSC=n + select DRM_EXYNOS_IPP help Choose this option if you want to use Exynos GSC for DRM. diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index 26d82bbd9080..72344b74387d 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -263,6 +263,7 @@ static struct exynos_drm_driver_info exynos_drm_drivers[] = { DRM_COMPONENT_DRIVER }, { DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC), + DRM_COMPONENT_DRIVER }, { &exynos_drm_platform_driver, DRM_VIRTUAL_DEVICE diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c dissimilarity index 43% index 0506b2b17ac1..b6ab58429c1c 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c @@ -1,1803 +1,1396 @@ -/* - * Copyright (C) 2012 Samsung Electronics Co.Ltd - * Authors: - * Eunchul Kim <chulspro.kim@samsung.com> - * Jinyoung Jeon <jy0.jeon@samsung.com> - * Sangmin Lee <lsmin.lee@samsung.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - */ -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/pm_runtime.h> -#include <linux/mfd/syscon.h> -#include <linux/regmap.h> - -#include <drm/drmP.h> -#include <drm/exynos_drm.h> -#include "regs-gsc.h" -#include "exynos_drm_drv.h" -#include "exynos_drm_ipp.h" -#include "exynos_drm_gsc.h" - -/* - * GSC stands for General SCaler and - * supports image scaler/rotator and input/output DMA operations. - * input DMA reads image data from the memory. - * output DMA writes image data to memory. - * GSC supports image rotation and image effect functions. - * - * M2M operation : supports crop/scale/rotation/csc so on. - * Memory ----> GSC H/W ----> Memory. - * Writeback operation : supports cloned screen with FIMD. - * FIMD ----> GSC H/W ----> Memory. - * Output operation : supports direct display using local path. - * Memory ----> GSC H/W ----> FIMD, Mixer. - */ - -/* - * TODO - * 1. check suspend/resume api if needed. - * 2. need to check use case platform_device_id. - * 3. check src/dst size with, height. - * 4. added check_prepare api for right register. - * 5. need to add supported list in prop_list. - * 6. check prescaler/scaler optimization. - */ - -#define GSC_MAX_DEVS 4 -#define GSC_MAX_SRC 4 -#define GSC_MAX_DST 16 -#define GSC_RESET_TIMEOUT 50 -#define GSC_BUF_STOP 1 -#define GSC_BUF_START 2 -#define GSC_REG_SZ 16 -#define GSC_WIDTH_ITU_709 1280 -#define GSC_SC_UP_MAX_RATIO 65536 -#define GSC_SC_DOWN_RATIO_7_8 74898 -#define GSC_SC_DOWN_RATIO_6_8 87381 -#define GSC_SC_DOWN_RATIO_5_8 104857 -#define GSC_SC_DOWN_RATIO_4_8 131072 -#define GSC_SC_DOWN_RATIO_3_8 174762 -#define GSC_SC_DOWN_RATIO_2_8 262144 -#define GSC_REFRESH_MIN 12 -#define GSC_REFRESH_MAX 60 -#define GSC_CROP_MAX 8192 -#define GSC_CROP_MIN 32 -#define GSC_SCALE_MAX 4224 -#define GSC_SCALE_MIN 32 -#define GSC_COEF_RATIO 7 -#define GSC_COEF_PHASE 9 -#define GSC_COEF_ATTR 16 -#define GSC_COEF_H_8T 8 -#define GSC_COEF_V_4T 4 -#define GSC_COEF_DEPTH 3 - -#define get_gsc_context(dev) platform_get_drvdata(to_platform_device(dev)) -#define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\ - struct gsc_context, ippdrv); -#define gsc_read(offset) readl(ctx->regs + (offset)) -#define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset)) - -/* - * A structure of scaler. - * - * @range: narrow, wide. - * @pre_shfactor: pre sclaer shift factor. - * @pre_hratio: horizontal ratio of the prescaler. - * @pre_vratio: vertical ratio of the prescaler. - * @main_hratio: the main scaler's horizontal ratio. - * @main_vratio: the main scaler's vertical ratio. - */ -struct gsc_scaler { - bool range; - u32 pre_shfactor; - u32 pre_hratio; - u32 pre_vratio; - unsigned long main_hratio; - unsigned long main_vratio; -}; - -/* - * A structure of scaler capability. - * - * find user manual 49.2 features. - * @tile_w: tile mode or rotation width. - * @tile_h: tile mode or rotation height. - * @w: other cases width. - * @h: other cases height. - */ -struct gsc_capability { - /* tile or rotation */ - u32 tile_w; - u32 tile_h; - /* other cases */ - u32 w; - u32 h; -}; - -/* - * A structure of gsc context. - * - * @ippdrv: prepare initialization using ippdrv. - * @regs_res: register resources. - * @regs: memory mapped io registers. - * @sysreg: handle to SYSREG block regmap. - * @lock: locking of operations. - * @gsc_clk: gsc gate clock. - * @sc: scaler infomations. - * @id: gsc id. - * @irq: irq number. - * @rotation: supports rotation of src. - * @suspended: qos operations. - */ -struct gsc_context { - struct exynos_drm_ippdrv ippdrv; - struct resource *regs_res; - void __iomem *regs; - struct regmap *sysreg; - struct mutex lock; - struct clk *gsc_clk; - struct gsc_scaler sc; - int id; - int irq; - bool rotation; - bool suspended; -}; - -/* 8-tap Filter Coefficient */ -static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = { - { /* Ratio <= 65536 (~8:8) */ - { 0, 0, 0, 128, 0, 0, 0, 0 }, - { -1, 2, -6, 127, 7, -2, 1, 0 }, - { -1, 4, -12, 125, 16, -5, 1, 0 }, - { -1, 5, -15, 120, 25, -8, 2, 0 }, - { -1, 6, -18, 114, 35, -10, 3, -1 }, - { -1, 6, -20, 107, 46, -13, 4, -1 }, - { -2, 7, -21, 99, 57, -16, 5, -1 }, - { -1, 6, -20, 89, 68, -18, 5, -1 }, - { -1, 6, -20, 79, 79, -20, 6, -1 }, - { -1, 5, -18, 68, 89, -20, 6, -1 }, - { -1, 5, -16, 57, 99, -21, 7, -2 }, - { -1, 4, -13, 46, 107, -20, 6, -1 }, - { -1, 3, -10, 35, 114, -18, 6, -1 }, - { 0, 2, -8, 25, 120, -15, 5, -1 }, - { 0, 1, -5, 16, 125, -12, 4, -1 }, - { 0, 1, -2, 7, 127, -6, 2, -1 } - }, { /* 65536 < Ratio <= 74898 (~8:7) */ - { 3, -8, 14, 111, 13, -8, 3, 0 }, - { 2, -6, 7, 112, 21, -10, 3, -1 }, - { 2, -4, 1, 110, 28, -12, 4, -1 }, - { 1, -2, -3, 106, 36, -13, 4, -1 }, - { 1, -1, -7, 103, 44, -15, 4, -1 }, - { 1, 1, -11, 97, 53, -16, 4, -1 }, - { 0, 2, -13, 91, 61, -16, 4, -1 }, - { 0, 3, -15, 85, 69, -17, 4, -1 }, - { 0, 3, -16, 77, 77, -16, 3, 0 }, - { -1, 4, -17, 69, 85, -15, 3, 0 }, - { -1, 4, -16, 61, 91, -13, 2, 0 }, - { -1, 4, -16, 53, 97, -11, 1, 1 }, - { -1, 4, -15, 44, 103, -7, -1, 1 }, - { -1, 4, -13, 36, 106, -3, -2, 1 }, - { -1, 4, -12, 28, 110, 1, -4, 2 }, - { -1, 3, -10, 21, 112, 7, -6, 2 } - }, { /* 74898 < Ratio <= 87381 (~8:6) */ - { 2, -11, 25, 96, 25, -11, 2, 0 }, - { 2, -10, 19, 96, 31, -12, 2, 0 }, - { 2, -9, 14, 94, 37, -12, 2, 0 }, - { 2, -8, 10, 92, 43, -12, 1, 0 }, - { 2, -7, 5, 90, 49, -12, 1, 0 }, - { 2, -5, 1, 86, 55, -12, 0, 1 }, - { 2, -4, -2, 82, 61, -11, -1, 1 }, - { 1, -3, -5, 77, 67, -9, -1, 1 }, - { 1, -2, -7, 72, 72, -7, -2, 1 }, - { 1, -1, -9, 67, 77, -5, -3, 1 }, - { 1, -1, -11, 61, 82, -2, -4, 2 }, - { 1, 0, -12, 55, 86, 1, -5, 2 }, - { 0, 1, -12, 49, 90, 5, -7, 2 }, - { 0, 1, -12, 43, 92, 10, -8, 2 }, - { 0, 2, -12, 37, 94, 14, -9, 2 }, - { 0, 2, -12, 31, 96, 19, -10, 2 } - }, { /* 87381 < Ratio <= 104857 (~8:5) */ - { -1, -8, 33, 80, 33, -8, -1, 0 }, - { -1, -8, 28, 80, 37, -7, -2, 1 }, - { 0, -8, 24, 79, 41, -7, -2, 1 }, - { 0, -8, 20, 78, 46, -6, -3, 1 }, - { 0, -8, 16, 76, 50, -4, -3, 1 }, - { 0, -7, 13, 74, 54, -3, -4, 1 }, - { 1, -7, 10, 71, 58, -1, -5, 1 }, - { 1, -6, 6, 68, 62, 1, -5, 1 }, - { 1, -6, 4, 65, 65, 4, -6, 1 }, - { 1, -5, 1, 62, 68, 6, -6, 1 }, - { 1, -5, -1, 58, 71, 10, -7, 1 }, - { 1, -4, -3, 54, 74, 13, -7, 0 }, - { 1, -3, -4, 50, 76, 16, -8, 0 }, - { 1, -3, -6, 46, 78, 20, -8, 0 }, - { 1, -2, -7, 41, 79, 24, -8, 0 }, - { 1, -2, -7, 37, 80, 28, -8, -1 } - }, { /* 104857 < Ratio <= 131072 (~8:4) */ - { -3, 0, 35, 64, 35, 0, -3, 0 }, - { -3, -1, 32, 64, 38, 1, -3, 0 }, - { -2, -2, 29, 63, 41, 2, -3, 0 }, - { -2, -3, 27, 63, 43, 4, -4, 0 }, - { -2, -3, 24, 61, 46, 6, -4, 0 }, - { -2, -3, 21, 60, 49, 7, -4, 0 }, - { -1, -4, 19, 59, 51, 9, -4, -1 }, - { -1, -4, 16, 57, 53, 12, -4, -1 }, - { -1, -4, 14, 55, 55, 14, -4, -1 }, - { -1, -4, 12, 53, 57, 16, -4, -1 }, - { -1, -4, 9, 51, 59, 19, -4, -1 }, - { 0, -4, 7, 49, 60, 21, -3, -2 }, - { 0, -4, 6, 46, 61, 24, -3, -2 }, - { 0, -4, 4, 43, 63, 27, -3, -2 }, - { 0, -3, 2, 41, 63, 29, -2, -2 }, - { 0, -3, 1, 38, 64, 32, -1, -3 } - }, { /* 131072 < Ratio <= 174762 (~8:3) */ - { -1, 8, 33, 48, 33, 8, -1, 0 }, - { -1, 7, 31, 49, 35, 9, -1, -1 }, - { -1, 6, 30, 49, 36, 10, -1, -1 }, - { -1, 5, 28, 48, 38, 12, -1, -1 }, - { -1, 4, 26, 48, 39, 13, 0, -1 }, - { -1, 3, 24, 47, 41, 15, 0, -1 }, - { -1, 2, 23, 47, 42, 16, 0, -1 }, - { -1, 2, 21, 45, 43, 18, 1, -1 }, - { -1, 1, 19, 45, 45, 19, 1, -1 }, - { -1, 1, 18, 43, 45, 21, 2, -1 }, - { -1, 0, 16, 42, 47, 23, 2, -1 }, - { -1, 0, 15, 41, 47, 24, 3, -1 }, - { -1, 0, 13, 39, 48, 26, 4, -1 }, - { -1, -1, 12, 38, 48, 28, 5, -1 }, - { -1, -1, 10, 36, 49, 30, 6, -1 }, - { -1, -1, 9, 35, 49, 31, 7, -1 } - }, { /* 174762 < Ratio <= 262144 (~8:2) */ - { 2, 13, 30, 38, 30, 13, 2, 0 }, - { 2, 12, 29, 38, 30, 14, 3, 0 }, - { 2, 11, 28, 38, 31, 15, 3, 0 }, - { 2, 10, 26, 38, 32, 16, 4, 0 }, - { 1, 10, 26, 37, 33, 17, 4, 0 }, - { 1, 9, 24, 37, 34, 18, 5, 0 }, - { 1, 8, 24, 37, 34, 19, 5, 0 }, - { 1, 7, 22, 36, 35, 20, 6, 1 }, - { 1, 6, 21, 36, 36, 21, 6, 1 }, - { 1, 6, 20, 35, 36, 22, 7, 1 }, - { 0, 5, 19, 34, 37, 24, 8, 1 }, - { 0, 5, 18, 34, 37, 24, 9, 1 }, - { 0, 4, 17, 33, 37, 26, 10, 1 }, - { 0, 4, 16, 32, 38, 26, 10, 2 }, - { 0, 3, 15, 31, 38, 28, 11, 2 }, - { 0, 3, 14, 30, 38, 29, 12, 2 } - } -}; - -/* 4-tap Filter Coefficient */ -static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = { - { /* Ratio <= 65536 (~8:8) */ - { 0, 128, 0, 0 }, - { -4, 127, 5, 0 }, - { -6, 124, 11, -1 }, - { -8, 118, 19, -1 }, - { -8, 111, 27, -2 }, - { -8, 102, 37, -3 }, - { -8, 92, 48, -4 }, - { -7, 81, 59, -5 }, - { -6, 70, 70, -6 }, - { -5, 59, 81, -7 }, - { -4, 48, 92, -8 }, - { -3, 37, 102, -8 }, - { -2, 27, 111, -8 }, - { -1, 19, 118, -8 }, - { -1, 11, 124, -6 }, - { 0, 5, 127, -4 } - }, { /* 65536 < Ratio <= 74898 (~8:7) */ - { 8, 112, 8, 0 }, - { 4, 111, 14, -1 }, - { 1, 109, 20, -2 }, - { -2, 105, 27, -2 }, - { -3, 100, 34, -3 }, - { -5, 93, 43, -3 }, - { -5, 86, 51, -4 }, - { -5, 77, 60, -4 }, - { -5, 69, 69, -5 }, - { -4, 60, 77, -5 }, - { -4, 51, 86, -5 }, - { -3, 43, 93, -5 }, - { -3, 34, 100, -3 }, - { -2, 27, 105, -2 }, - { -2, 20, 109, 1 }, - { -1, 14, 111, 4 } - }, { /* 74898 < Ratio <= 87381 (~8:6) */ - { 16, 96, 16, 0 }, - { 12, 97, 21, -2 }, - { 8, 96, 26, -2 }, - { 5, 93, 32, -2 }, - { 2, 89, 39, -2 }, - { 0, 84, 46, -2 }, - { -1, 79, 53, -3 }, - { -2, 73, 59, -2 }, - { -2, 66, 66, -2 }, - { -2, 59, 73, -2 }, - { -3, 53, 79, -1 }, - { -2, 46, 84, 0 }, - { -2, 39, 89, 2 }, - { -2, 32, 93, 5 }, - { -2, 26, 96, 8 }, - { -2, 21, 97, 12 } - }, { /* 87381 < Ratio <= 104857 (~8:5) */ - { 22, 84, 22, 0 }, - { 18, 85, 26, -1 }, - { 14, 84, 31, -1 }, - { 11, 82, 36, -1 }, - { 8, 79, 42, -1 }, - { 6, 76, 47, -1 }, - { 4, 72, 52, 0 }, - { 2, 68, 58, 0 }, - { 1, 63, 63, 1 }, - { 0, 58, 68, 2 }, - { 0, 52, 72, 4 }, - { -1, 47, 76, 6 }, - { -1, 42, 79, 8 }, - { -1, 36, 82, 11 }, - { -1, 31, 84, 14 }, - { -1, 26, 85, 18 } - }, { /* 104857 < Ratio <= 131072 (~8:4) */ - { 26, 76, 26, 0 }, - { 22, 76, 30, 0 }, - { 19, 75, 34, 0 }, - { 16, 73, 38, 1 }, - { 13, 71, 43, 1 }, - { 10, 69, 47, 2 }, - { 8, 66, 51, 3 }, - { 6, 63, 55, 4 }, - { 5, 59, 59, 5 }, - { 4, 55, 63, 6 }, - { 3, 51, 66, 8 }, - { 2, 47, 69, 10 }, - { 1, 43, 71, 13 }, - { 1, 38, 73, 16 }, - { 0, 34, 75, 19 }, - { 0, 30, 76, 22 } - }, { /* 131072 < Ratio <= 174762 (~8:3) */ - { 29, 70, 29, 0 }, - { 26, 68, 32, 2 }, - { 23, 67, 36, 2 }, - { 20, 66, 39, 3 }, - { 17, 65, 43, 3 }, - { 15, 63, 46, 4 }, - { 12, 61, 50, 5 }, - { 10, 58, 53, 7 }, - { 8, 56, 56, 8 }, - { 7, 53, 58, 10 }, - { 5, 50, 61, 12 }, - { 4, 46, 63, 15 }, - { 3, 43, 65, 17 }, - { 3, 39, 66, 20 }, - { 2, 36, 67, 23 }, - { 2, 32, 68, 26 } - }, { /* 174762 < Ratio <= 262144 (~8:2) */ - { 32, 64, 32, 0 }, - { 28, 63, 34, 3 }, - { 25, 62, 37, 4 }, - { 22, 62, 40, 4 }, - { 19, 61, 43, 5 }, - { 17, 59, 46, 6 }, - { 15, 58, 48, 7 }, - { 13, 55, 51, 9 }, - { 11, 53, 53, 11 }, - { 9, 51, 55, 13 }, - { 7, 48, 58, 15 }, - { 6, 46, 59, 17 }, - { 5, 43, 61, 19 }, - { 4, 40, 62, 22 }, - { 4, 37, 62, 25 }, - { 3, 34, 63, 28 } - } -}; - -static int gsc_sw_reset(struct gsc_context *ctx) -{ - u32 cfg; - int count = GSC_RESET_TIMEOUT; - - /* s/w reset */ - cfg = (GSC_SW_RESET_SRESET); - gsc_write(cfg, GSC_SW_RESET); - - /* wait s/w reset complete */ - while (count--) { - cfg = gsc_read(GSC_SW_RESET); - if (!cfg) - break; - usleep_range(1000, 2000); - } - - if (cfg) { - DRM_ERROR("failed to reset gsc h/w.\n"); - return -EBUSY; - } - - /* reset sequence */ - cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); - cfg |= (GSC_IN_BASE_ADDR_MASK | - GSC_IN_BASE_ADDR_PINGPONG(0)); - gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); - gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); - gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); - - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); - cfg |= (GSC_OUT_BASE_ADDR_MASK | - GSC_OUT_BASE_ADDR_PINGPONG(0)); - gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); - gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); - gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); - - return 0; -} - -static void gsc_set_gscblk_fimd_wb(struct gsc_context *ctx, bool enable) -{ - unsigned int gscblk_cfg; - - if (!ctx->sysreg) - return; - - regmap_read(ctx->sysreg, SYSREG_GSCBLK_CFG1, &gscblk_cfg); - - if (enable) - gscblk_cfg |= GSC_BLK_DISP1WB_DEST(ctx->id) | - GSC_BLK_GSCL_WB_IN_SRC_SEL(ctx->id) | - GSC_BLK_SW_RESET_WB_DEST(ctx->id); - else - gscblk_cfg |= GSC_BLK_PXLASYNC_LO_MASK_WB(ctx->id); - - regmap_write(ctx->sysreg, SYSREG_GSCBLK_CFG1, gscblk_cfg); -} - -static void gsc_handle_irq(struct gsc_context *ctx, bool enable, - bool overflow, bool done) -{ - u32 cfg; - - DRM_DEBUG_KMS("enable[%d]overflow[%d]level[%d]\n", - enable, overflow, done); - - cfg = gsc_read(GSC_IRQ); - cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK); - - if (enable) - cfg |= GSC_IRQ_ENABLE; - else - cfg &= ~GSC_IRQ_ENABLE; - - if (overflow) - cfg &= ~GSC_IRQ_OR_MASK; - else - cfg |= GSC_IRQ_OR_MASK; - - if (done) - cfg &= ~GSC_IRQ_FRMDONE_MASK; - else - cfg |= GSC_IRQ_FRMDONE_MASK; - - gsc_write(cfg, GSC_IRQ); -} - - -static int gsc_src_set_fmt(struct device *dev, u32 fmt) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - u32 cfg; - - DRM_DEBUG_KMS("fmt[0x%x]\n", fmt); - - cfg = gsc_read(GSC_IN_CON); - cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK | - GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK | - GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE | - GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK); - - switch (fmt) { - case DRM_FORMAT_RGB565: - cfg |= GSC_IN_RGB565; - break; - case DRM_FORMAT_XRGB8888: - cfg |= GSC_IN_XRGB8888; - break; - case DRM_FORMAT_BGRX8888: - cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP); - break; - case DRM_FORMAT_YUYV: - cfg |= (GSC_IN_YUV422_1P | - GSC_IN_YUV422_1P_ORDER_LSB_Y | - GSC_IN_CHROMA_ORDER_CBCR); - break; - case DRM_FORMAT_YVYU: - cfg |= (GSC_IN_YUV422_1P | - GSC_IN_YUV422_1P_ORDER_LSB_Y | - GSC_IN_CHROMA_ORDER_CRCB); - break; - case DRM_FORMAT_UYVY: - cfg |= (GSC_IN_YUV422_1P | - GSC_IN_YUV422_1P_OEDER_LSB_C | - GSC_IN_CHROMA_ORDER_CBCR); - break; - case DRM_FORMAT_VYUY: - cfg |= (GSC_IN_YUV422_1P | - GSC_IN_YUV422_1P_OEDER_LSB_C | - GSC_IN_CHROMA_ORDER_CRCB); - break; - case DRM_FORMAT_NV21: - case DRM_FORMAT_NV61: - cfg |= (GSC_IN_CHROMA_ORDER_CRCB | - GSC_IN_YUV420_2P); - break; - case DRM_FORMAT_YUV422: - cfg |= GSC_IN_YUV422_3P; - break; - case DRM_FORMAT_YUV420: - case DRM_FORMAT_YVU420: - cfg |= GSC_IN_YUV420_3P; - break; - case DRM_FORMAT_NV12: - case DRM_FORMAT_NV16: - cfg |= (GSC_IN_CHROMA_ORDER_CBCR | - GSC_IN_YUV420_2P); - break; - default: - dev_err(ippdrv->dev, "invalid target yuv order 0x%x.\n", fmt); - return -EINVAL; - } - - gsc_write(cfg, GSC_IN_CON); - - return 0; -} - -static int gsc_src_set_transf(struct device *dev, - enum drm_exynos_degree degree, - enum drm_exynos_flip flip, bool *swap) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - u32 cfg; - - DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip); - - cfg = gsc_read(GSC_IN_CON); - cfg &= ~GSC_IN_ROT_MASK; - - switch (degree) { - case EXYNOS_DRM_DEGREE_0: - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg |= GSC_IN_ROT_XFLIP; - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg |= GSC_IN_ROT_YFLIP; - break; - case EXYNOS_DRM_DEGREE_90: - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg |= GSC_IN_ROT_90_XFLIP; - else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg |= GSC_IN_ROT_90_YFLIP; - else - cfg |= GSC_IN_ROT_90; - break; - case EXYNOS_DRM_DEGREE_180: - cfg |= GSC_IN_ROT_180; - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg &= ~GSC_IN_ROT_XFLIP; - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg &= ~GSC_IN_ROT_YFLIP; - break; - case EXYNOS_DRM_DEGREE_270: - cfg |= GSC_IN_ROT_270; - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg &= ~GSC_IN_ROT_XFLIP; - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg &= ~GSC_IN_ROT_YFLIP; - break; - default: - dev_err(ippdrv->dev, "invalid degree value %d.\n", degree); - return -EINVAL; - } - - gsc_write(cfg, GSC_IN_CON); - - ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0; - *swap = ctx->rotation; - - return 0; -} - -static int gsc_src_set_size(struct device *dev, int swap, - struct drm_exynos_pos *pos, struct drm_exynos_sz *sz) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct drm_exynos_pos img_pos = *pos; - struct gsc_scaler *sc = &ctx->sc; - u32 cfg; - - DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n", - swap, pos->x, pos->y, pos->w, pos->h); - - if (swap) { - img_pos.w = pos->h; - img_pos.h = pos->w; - } - - /* pixel offset */ - cfg = (GSC_SRCIMG_OFFSET_X(img_pos.x) | - GSC_SRCIMG_OFFSET_Y(img_pos.y)); - gsc_write(cfg, GSC_SRCIMG_OFFSET); - - /* cropped size */ - cfg = (GSC_CROPPED_WIDTH(img_pos.w) | - GSC_CROPPED_HEIGHT(img_pos.h)); - gsc_write(cfg, GSC_CROPPED_SIZE); - - DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize); - - /* original size */ - cfg = gsc_read(GSC_SRCIMG_SIZE); - cfg &= ~(GSC_SRCIMG_HEIGHT_MASK | - GSC_SRCIMG_WIDTH_MASK); - - cfg |= (GSC_SRCIMG_WIDTH(sz->hsize) | - GSC_SRCIMG_HEIGHT(sz->vsize)); - - gsc_write(cfg, GSC_SRCIMG_SIZE); - - cfg = gsc_read(GSC_IN_CON); - cfg &= ~GSC_IN_RGB_TYPE_MASK; - - DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range); - - if (pos->w >= GSC_WIDTH_ITU_709) - if (sc->range) - cfg |= GSC_IN_RGB_HD_WIDE; - else - cfg |= GSC_IN_RGB_HD_NARROW; - else - if (sc->range) - cfg |= GSC_IN_RGB_SD_WIDE; - else - cfg |= GSC_IN_RGB_SD_NARROW; - - gsc_write(cfg, GSC_IN_CON); - - return 0; -} - -static int gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id, - enum drm_exynos_ipp_buf_type buf_type) -{ - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - bool masked; - u32 cfg; - u32 mask = 0x00000001 << buf_id; - - DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type); - - /* mask register set */ - cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); - - switch (buf_type) { - case IPP_BUF_ENQUEUE: - masked = false; - break; - case IPP_BUF_DEQUEUE: - masked = true; - break; - default: - dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n"); - return -EINVAL; - } - - /* sequence id */ - cfg &= ~mask; - cfg |= masked << buf_id; - gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); - gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); - gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); - - return 0; -} - -static int gsc_src_set_addr(struct device *dev, - struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id, - enum drm_exynos_ipp_buf_type buf_type) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; - struct drm_exynos_ipp_property *property; - - if (!c_node) { - DRM_ERROR("failed to get c_node.\n"); - return -EFAULT; - } - - property = &c_node->property; - - DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n", - property->prop_id, buf_id, buf_type); - - if (buf_id > GSC_MAX_SRC) { - dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id); - return -EINVAL; - } - - /* address register set */ - switch (buf_type) { - case IPP_BUF_ENQUEUE: - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y], - GSC_IN_BASE_ADDR_Y(buf_id)); - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB], - GSC_IN_BASE_ADDR_CB(buf_id)); - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR], - GSC_IN_BASE_ADDR_CR(buf_id)); - break; - case IPP_BUF_DEQUEUE: - gsc_write(0x0, GSC_IN_BASE_ADDR_Y(buf_id)); - gsc_write(0x0, GSC_IN_BASE_ADDR_CB(buf_id)); - gsc_write(0x0, GSC_IN_BASE_ADDR_CR(buf_id)); - break; - default: - /* bypass */ - break; - } - - return gsc_src_set_buf_seq(ctx, buf_id, buf_type); -} - -static struct exynos_drm_ipp_ops gsc_src_ops = { - .set_fmt = gsc_src_set_fmt, - .set_transf = gsc_src_set_transf, - .set_size = gsc_src_set_size, - .set_addr = gsc_src_set_addr, -}; - -static int gsc_dst_set_fmt(struct device *dev, u32 fmt) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - u32 cfg; - - DRM_DEBUG_KMS("fmt[0x%x]\n", fmt); - - cfg = gsc_read(GSC_OUT_CON); - cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK | - GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK | - GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK | - GSC_OUT_GLOBAL_ALPHA_MASK); - - switch (fmt) { - case DRM_FORMAT_RGB565: - cfg |= GSC_OUT_RGB565; - break; - case DRM_FORMAT_XRGB8888: - cfg |= GSC_OUT_XRGB8888; - break; - case DRM_FORMAT_BGRX8888: - cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP); - break; - case DRM_FORMAT_YUYV: - cfg |= (GSC_OUT_YUV422_1P | - GSC_OUT_YUV422_1P_ORDER_LSB_Y | - GSC_OUT_CHROMA_ORDER_CBCR); - break; - case DRM_FORMAT_YVYU: - cfg |= (GSC_OUT_YUV422_1P | - GSC_OUT_YUV422_1P_ORDER_LSB_Y | - GSC_OUT_CHROMA_ORDER_CRCB); - break; - case DRM_FORMAT_UYVY: - cfg |= (GSC_OUT_YUV422_1P | - GSC_OUT_YUV422_1P_OEDER_LSB_C | - GSC_OUT_CHROMA_ORDER_CBCR); - break; - case DRM_FORMAT_VYUY: - cfg |= (GSC_OUT_YUV422_1P | - GSC_OUT_YUV422_1P_OEDER_LSB_C | - GSC_OUT_CHROMA_ORDER_CRCB); - break; - case DRM_FORMAT_NV21: - case DRM_FORMAT_NV61: - cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P); - break; - case DRM_FORMAT_YUV422: - case DRM_FORMAT_YUV420: - case DRM_FORMAT_YVU420: - cfg |= GSC_OUT_YUV420_3P; - break; - case DRM_FORMAT_NV12: - case DRM_FORMAT_NV16: - cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | - GSC_OUT_YUV420_2P); - break; - default: - dev_err(ippdrv->dev, "invalid target yuv order 0x%x.\n", fmt); - return -EINVAL; - } - - gsc_write(cfg, GSC_OUT_CON); - - return 0; -} - -static int gsc_dst_set_transf(struct device *dev, - enum drm_exynos_degree degree, - enum drm_exynos_flip flip, bool *swap) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - u32 cfg; - - DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip); - - cfg = gsc_read(GSC_IN_CON); - cfg &= ~GSC_IN_ROT_MASK; - - switch (degree) { - case EXYNOS_DRM_DEGREE_0: - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg |= GSC_IN_ROT_XFLIP; - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg |= GSC_IN_ROT_YFLIP; - break; - case EXYNOS_DRM_DEGREE_90: - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg |= GSC_IN_ROT_90_XFLIP; - else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg |= GSC_IN_ROT_90_YFLIP; - else - cfg |= GSC_IN_ROT_90; - break; - case EXYNOS_DRM_DEGREE_180: - cfg |= GSC_IN_ROT_180; - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg &= ~GSC_IN_ROT_XFLIP; - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg &= ~GSC_IN_ROT_YFLIP; - break; - case EXYNOS_DRM_DEGREE_270: - cfg |= GSC_IN_ROT_270; - if (flip & EXYNOS_DRM_FLIP_VERTICAL) - cfg &= ~GSC_IN_ROT_XFLIP; - if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) - cfg &= ~GSC_IN_ROT_YFLIP; - break; - default: - dev_err(ippdrv->dev, "invalid degree value %d.\n", degree); - return -EINVAL; - } - - gsc_write(cfg, GSC_IN_CON); - - ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0; - *swap = ctx->rotation; - - return 0; -} - -static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio) -{ - DRM_DEBUG_KMS("src[%d]dst[%d]\n", src, dst); - - if (src >= dst * 8) { - DRM_ERROR("failed to make ratio and shift.\n"); - return -EINVAL; - } else if (src >= dst * 4) - *ratio = 4; - else if (src >= dst * 2) - *ratio = 2; - else - *ratio = 1; - - return 0; -} - -static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor) -{ - if (hratio == 4 && vratio == 4) - *shfactor = 4; - else if ((hratio == 4 && vratio == 2) || - (hratio == 2 && vratio == 4)) - *shfactor = 3; - else if ((hratio == 4 && vratio == 1) || - (hratio == 1 && vratio == 4) || - (hratio == 2 && vratio == 2)) - *shfactor = 2; - else if (hratio == 1 && vratio == 1) - *shfactor = 0; - else - *shfactor = 1; -} - -static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc, - struct drm_exynos_pos *src, struct drm_exynos_pos *dst) -{ - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - u32 cfg; - u32 src_w, src_h, dst_w, dst_h; - int ret = 0; - - src_w = src->w; - src_h = src->h; - - if (ctx->rotation) { - dst_w = dst->h; - dst_h = dst->w; - } else { - dst_w = dst->w; - dst_h = dst->h; - } - - ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio); - if (ret) { - dev_err(ippdrv->dev, "failed to get ratio horizontal.\n"); - return ret; - } - - ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio); - if (ret) { - dev_err(ippdrv->dev, "failed to get ratio vertical.\n"); - return ret; - } - - DRM_DEBUG_KMS("pre_hratio[%d]pre_vratio[%d]\n", - sc->pre_hratio, sc->pre_vratio); - - sc->main_hratio = (src_w << 16) / dst_w; - sc->main_vratio = (src_h << 16) / dst_h; - - DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n", - sc->main_hratio, sc->main_vratio); - - gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio, - &sc->pre_shfactor); - - DRM_DEBUG_KMS("pre_shfactor[%d]\n", sc->pre_shfactor); - - cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) | - GSC_PRESC_H_RATIO(sc->pre_hratio) | - GSC_PRESC_V_RATIO(sc->pre_vratio)); - gsc_write(cfg, GSC_PRE_SCALE_RATIO); - - return ret; -} - -static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio) -{ - int i, j, k, sc_ratio; - - if (main_hratio <= GSC_SC_UP_MAX_RATIO) - sc_ratio = 0; - else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8) - sc_ratio = 1; - else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8) - sc_ratio = 2; - else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8) - sc_ratio = 3; - else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8) - sc_ratio = 4; - else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8) - sc_ratio = 5; - else - sc_ratio = 6; - - for (i = 0; i < GSC_COEF_PHASE; i++) - for (j = 0; j < GSC_COEF_H_8T; j++) - for (k = 0; k < GSC_COEF_DEPTH; k++) - gsc_write(h_coef_8t[sc_ratio][i][j], - GSC_HCOEF(i, j, k)); -} - -static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio) -{ - int i, j, k, sc_ratio; - - if (main_vratio <= GSC_SC_UP_MAX_RATIO) - sc_ratio = 0; - else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8) - sc_ratio = 1; - else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8) - sc_ratio = 2; - else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8) - sc_ratio = 3; - else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8) - sc_ratio = 4; - else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8) - sc_ratio = 5; - else - sc_ratio = 6; - - for (i = 0; i < GSC_COEF_PHASE; i++) - for (j = 0; j < GSC_COEF_V_4T; j++) - for (k = 0; k < GSC_COEF_DEPTH; k++) - gsc_write(v_coef_4t[sc_ratio][i][j], - GSC_VCOEF(i, j, k)); -} - -static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc) -{ - u32 cfg; - - DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n", - sc->main_hratio, sc->main_vratio); - - gsc_set_h_coef(ctx, sc->main_hratio); - cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio); - gsc_write(cfg, GSC_MAIN_H_RATIO); - - gsc_set_v_coef(ctx, sc->main_vratio); - cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio); - gsc_write(cfg, GSC_MAIN_V_RATIO); -} - -static int gsc_dst_set_size(struct device *dev, int swap, - struct drm_exynos_pos *pos, struct drm_exynos_sz *sz) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct drm_exynos_pos img_pos = *pos; - struct gsc_scaler *sc = &ctx->sc; - u32 cfg; - - DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n", - swap, pos->x, pos->y, pos->w, pos->h); - - if (swap) { - img_pos.w = pos->h; - img_pos.h = pos->w; - } - - /* pixel offset */ - cfg = (GSC_DSTIMG_OFFSET_X(pos->x) | - GSC_DSTIMG_OFFSET_Y(pos->y)); - gsc_write(cfg, GSC_DSTIMG_OFFSET); - - /* scaled size */ - cfg = (GSC_SCALED_WIDTH(img_pos.w) | GSC_SCALED_HEIGHT(img_pos.h)); - gsc_write(cfg, GSC_SCALED_SIZE); - - DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize); - - /* original size */ - cfg = gsc_read(GSC_DSTIMG_SIZE); - cfg &= ~(GSC_DSTIMG_HEIGHT_MASK | - GSC_DSTIMG_WIDTH_MASK); - cfg |= (GSC_DSTIMG_WIDTH(sz->hsize) | - GSC_DSTIMG_HEIGHT(sz->vsize)); - gsc_write(cfg, GSC_DSTIMG_SIZE); - - cfg = gsc_read(GSC_OUT_CON); - cfg &= ~GSC_OUT_RGB_TYPE_MASK; - - DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range); - - if (pos->w >= GSC_WIDTH_ITU_709) - if (sc->range) - cfg |= GSC_OUT_RGB_HD_WIDE; - else - cfg |= GSC_OUT_RGB_HD_NARROW; - else - if (sc->range) - cfg |= GSC_OUT_RGB_SD_WIDE; - else - cfg |= GSC_OUT_RGB_SD_NARROW; - - gsc_write(cfg, GSC_OUT_CON); - - return 0; -} - -static int gsc_dst_get_buf_seq(struct gsc_context *ctx) -{ - u32 cfg, i, buf_num = GSC_REG_SZ; - u32 mask = 0x00000001; - - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); - - for (i = 0; i < GSC_REG_SZ; i++) - if (cfg & (mask << i)) - buf_num--; - - DRM_DEBUG_KMS("buf_num[%d]\n", buf_num); - - return buf_num; -} - -static int gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id, - enum drm_exynos_ipp_buf_type buf_type) -{ - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - bool masked; - u32 cfg; - u32 mask = 0x00000001 << buf_id; - int ret = 0; - - DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type); - - mutex_lock(&ctx->lock); - - /* mask register set */ - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); - - switch (buf_type) { - case IPP_BUF_ENQUEUE: - masked = false; - break; - case IPP_BUF_DEQUEUE: - masked = true; - break; - default: - dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n"); - ret = -EINVAL; - goto err_unlock; - } - - /* sequence id */ - cfg &= ~mask; - cfg |= masked << buf_id; - gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); - gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); - gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); - - /* interrupt enable */ - if (buf_type == IPP_BUF_ENQUEUE && - gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START) - gsc_handle_irq(ctx, true, false, true); - - /* interrupt disable */ - if (buf_type == IPP_BUF_DEQUEUE && - gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP) - gsc_handle_irq(ctx, false, false, true); - -err_unlock: - mutex_unlock(&ctx->lock); - return ret; -} - -static int gsc_dst_set_addr(struct device *dev, - struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id, - enum drm_exynos_ipp_buf_type buf_type) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; - struct drm_exynos_ipp_property *property; - - if (!c_node) { - DRM_ERROR("failed to get c_node.\n"); - return -EFAULT; - } - - property = &c_node->property; - - DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n", - property->prop_id, buf_id, buf_type); - - if (buf_id > GSC_MAX_DST) { - dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id); - return -EINVAL; - } - - /* address register set */ - switch (buf_type) { - case IPP_BUF_ENQUEUE: - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y], - GSC_OUT_BASE_ADDR_Y(buf_id)); - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB], - GSC_OUT_BASE_ADDR_CB(buf_id)); - gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR], - GSC_OUT_BASE_ADDR_CR(buf_id)); - break; - case IPP_BUF_DEQUEUE: - gsc_write(0x0, GSC_OUT_BASE_ADDR_Y(buf_id)); - gsc_write(0x0, GSC_OUT_BASE_ADDR_CB(buf_id)); - gsc_write(0x0, GSC_OUT_BASE_ADDR_CR(buf_id)); - break; - default: - /* bypass */ - break; - } - - return gsc_dst_set_buf_seq(ctx, buf_id, buf_type); -} - -static struct exynos_drm_ipp_ops gsc_dst_ops = { - .set_fmt = gsc_dst_set_fmt, - .set_transf = gsc_dst_set_transf, - .set_size = gsc_dst_set_size, - .set_addr = gsc_dst_set_addr, -}; - -static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable) -{ - DRM_DEBUG_KMS("enable[%d]\n", enable); - - if (enable) { - clk_prepare_enable(ctx->gsc_clk); - ctx->suspended = false; - } else { - clk_disable_unprepare(ctx->gsc_clk); - ctx->suspended = true; - } - - return 0; -} - -static int gsc_get_src_buf_index(struct gsc_context *ctx) -{ - u32 cfg, curr_index, i; - u32 buf_id = GSC_MAX_SRC; - int ret; - - DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); - - cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); - curr_index = GSC_IN_CURR_GET_INDEX(cfg); - - for (i = curr_index; i < GSC_MAX_SRC; i++) { - if (!((cfg >> i) & 0x1)) { - buf_id = i; - break; - } - } - - if (buf_id == GSC_MAX_SRC) { - DRM_ERROR("failed to get in buffer index.\n"); - return -EINVAL; - } - - ret = gsc_src_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE); - if (ret < 0) { - DRM_ERROR("failed to dequeue.\n"); - return ret; - } - - DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, - curr_index, buf_id); - - return buf_id; -} - -static int gsc_get_dst_buf_index(struct gsc_context *ctx) -{ - u32 cfg, curr_index, i; - u32 buf_id = GSC_MAX_DST; - int ret; - - DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); - - cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); - curr_index = GSC_OUT_CURR_GET_INDEX(cfg); - - for (i = curr_index; i < GSC_MAX_DST; i++) { - if (!((cfg >> i) & 0x1)) { - buf_id = i; - break; - } - } - - if (buf_id == GSC_MAX_DST) { - DRM_ERROR("failed to get out buffer index.\n"); - return -EINVAL; - } - - ret = gsc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE); - if (ret < 0) { - DRM_ERROR("failed to dequeue.\n"); - return ret; - } - - DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, - curr_index, buf_id); - - return buf_id; -} - -static irqreturn_t gsc_irq_handler(int irq, void *dev_id) -{ - struct gsc_context *ctx = dev_id; - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; - struct drm_exynos_ipp_event_work *event_work = - c_node->event_work; - u32 status; - int buf_id[EXYNOS_DRM_OPS_MAX]; - - DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); - - status = gsc_read(GSC_IRQ); - if (status & GSC_IRQ_STATUS_OR_IRQ) { - dev_err(ippdrv->dev, "occurred overflow at %d, status 0x%x.\n", - ctx->id, status); - return IRQ_NONE; - } - - if (status & GSC_IRQ_STATUS_OR_FRM_DONE) { - dev_dbg(ippdrv->dev, "occurred frame done at %d, status 0x%x.\n", - ctx->id, status); - - buf_id[EXYNOS_DRM_OPS_SRC] = gsc_get_src_buf_index(ctx); - if (buf_id[EXYNOS_DRM_OPS_SRC] < 0) - return IRQ_HANDLED; - - buf_id[EXYNOS_DRM_OPS_DST] = gsc_get_dst_buf_index(ctx); - if (buf_id[EXYNOS_DRM_OPS_DST] < 0) - return IRQ_HANDLED; - - DRM_DEBUG_KMS("buf_id_src[%d]buf_id_dst[%d]\n", - buf_id[EXYNOS_DRM_OPS_SRC], buf_id[EXYNOS_DRM_OPS_DST]); - - event_work->ippdrv = ippdrv; - event_work->buf_id[EXYNOS_DRM_OPS_SRC] = - buf_id[EXYNOS_DRM_OPS_SRC]; - event_work->buf_id[EXYNOS_DRM_OPS_DST] = - buf_id[EXYNOS_DRM_OPS_DST]; - queue_work(ippdrv->event_workq, &event_work->work); - } - - return IRQ_HANDLED; -} - -static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv) -{ - struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list; - - prop_list->version = 1; - prop_list->writeback = 1; - prop_list->refresh_min = GSC_REFRESH_MIN; - prop_list->refresh_max = GSC_REFRESH_MAX; - prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) | - (1 << EXYNOS_DRM_FLIP_HORIZONTAL); - prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) | - (1 << EXYNOS_DRM_DEGREE_90) | - (1 << EXYNOS_DRM_DEGREE_180) | - (1 << EXYNOS_DRM_DEGREE_270); - prop_list->csc = 1; - prop_list->crop = 1; - prop_list->crop_max.hsize = GSC_CROP_MAX; - prop_list->crop_max.vsize = GSC_CROP_MAX; - prop_list->crop_min.hsize = GSC_CROP_MIN; - prop_list->crop_min.vsize = GSC_CROP_MIN; - prop_list->scale = 1; - prop_list->scale_max.hsize = GSC_SCALE_MAX; - prop_list->scale_max.vsize = GSC_SCALE_MAX; - prop_list->scale_min.hsize = GSC_SCALE_MIN; - prop_list->scale_min.vsize = GSC_SCALE_MIN; - - return 0; -} - -static inline bool gsc_check_drm_flip(enum drm_exynos_flip flip) -{ - switch (flip) { - case EXYNOS_DRM_FLIP_NONE: - case EXYNOS_DRM_FLIP_VERTICAL: - case EXYNOS_DRM_FLIP_HORIZONTAL: - case EXYNOS_DRM_FLIP_BOTH: - return true; - default: - DRM_DEBUG_KMS("invalid flip\n"); - return false; - } -} - -static int gsc_ippdrv_check_property(struct device *dev, - struct drm_exynos_ipp_property *property) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - struct drm_exynos_ipp_prop_list *pp = &ippdrv->prop_list; - struct drm_exynos_ipp_config *config; - struct drm_exynos_pos *pos; - struct drm_exynos_sz *sz; - bool swap; - int i; - - for_each_ipp_ops(i) { - if ((i == EXYNOS_DRM_OPS_SRC) && - (property->cmd == IPP_CMD_WB)) - continue; - - config = &property->config[i]; - pos = &config->pos; - sz = &config->sz; - - /* check for flip */ - if (!gsc_check_drm_flip(config->flip)) { - DRM_ERROR("invalid flip.\n"); - goto err_property; - } - - /* check for degree */ - switch (config->degree) { - case EXYNOS_DRM_DEGREE_90: - case EXYNOS_DRM_DEGREE_270: - swap = true; - break; - case EXYNOS_DRM_DEGREE_0: - case EXYNOS_DRM_DEGREE_180: - swap = false; - break; - default: - DRM_ERROR("invalid degree.\n"); - goto err_property; - } - - /* check for buffer bound */ - if ((pos->x + pos->w > sz->hsize) || - (pos->y + pos->h > sz->vsize)) { - DRM_ERROR("out of buf bound.\n"); - goto err_property; - } - - /* check for crop */ - if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) { - if (swap) { - if ((pos->h < pp->crop_min.hsize) || - (sz->vsize > pp->crop_max.hsize) || - (pos->w < pp->crop_min.vsize) || - (sz->hsize > pp->crop_max.vsize)) { - DRM_ERROR("out of crop size.\n"); - goto err_property; - } - } else { - if ((pos->w < pp->crop_min.hsize) || - (sz->hsize > pp->crop_max.hsize) || - (pos->h < pp->crop_min.vsize) || - (sz->vsize > pp->crop_max.vsize)) { - DRM_ERROR("out of crop size.\n"); - goto err_property; - } - } - } - - /* check for scale */ - if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) { - if (swap) { - if ((pos->h < pp->scale_min.hsize) || - (sz->vsize > pp->scale_max.hsize) || - (pos->w < pp->scale_min.vsize) || - (sz->hsize > pp->scale_max.vsize)) { - DRM_ERROR("out of scale size.\n"); - goto err_property; - } - } else { - if ((pos->w < pp->scale_min.hsize) || - (sz->hsize > pp->scale_max.hsize) || - (pos->h < pp->scale_min.vsize) || - (sz->vsize > pp->scale_max.vsize)) { - DRM_ERROR("out of scale size.\n"); - goto err_property; - } - } - } - } - - return 0; - -err_property: - for_each_ipp_ops(i) { - if ((i == EXYNOS_DRM_OPS_SRC) && - (property->cmd == IPP_CMD_WB)) - continue; - - config = &property->config[i]; - pos = &config->pos; - sz = &config->sz; - - DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n", - i ? "dst" : "src", config->flip, config->degree, - pos->x, pos->y, pos->w, pos->h, - sz->hsize, sz->vsize); - } - - return -EINVAL; -} - - -static int gsc_ippdrv_reset(struct device *dev) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct gsc_scaler *sc = &ctx->sc; - int ret; - - /* reset h/w block */ - ret = gsc_sw_reset(ctx); - if (ret < 0) { - dev_err(dev, "failed to reset hardware.\n"); - return ret; - } - - /* scaler setting */ - memset(&ctx->sc, 0x0, sizeof(ctx->sc)); - sc->range = true; - - return 0; -} - -static int gsc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; - struct drm_exynos_ipp_property *property; - struct drm_exynos_ipp_config *config; - struct drm_exynos_pos img_pos[EXYNOS_DRM_OPS_MAX]; - struct drm_exynos_ipp_set_wb set_wb; - u32 cfg; - int ret, i; - - DRM_DEBUG_KMS("cmd[%d]\n", cmd); - - if (!c_node) { - DRM_ERROR("failed to get c_node.\n"); - return -EINVAL; - } - - property = &c_node->property; - - gsc_handle_irq(ctx, true, false, true); - - for_each_ipp_ops(i) { - config = &property->config[i]; - img_pos[i] = config->pos; - } - - switch (cmd) { - case IPP_CMD_M2M: - /* enable one shot */ - cfg = gsc_read(GSC_ENABLE); - cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK | - GSC_ENABLE_CLK_GATE_MODE_MASK); - cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT; - gsc_write(cfg, GSC_ENABLE); - - /* src dma memory */ - cfg = gsc_read(GSC_IN_CON); - cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); - cfg |= GSC_IN_PATH_MEMORY; - gsc_write(cfg, GSC_IN_CON); - - /* dst dma memory */ - cfg = gsc_read(GSC_OUT_CON); - cfg |= GSC_OUT_PATH_MEMORY; - gsc_write(cfg, GSC_OUT_CON); - break; - case IPP_CMD_WB: - set_wb.enable = 1; - set_wb.refresh = property->refresh_rate; - gsc_set_gscblk_fimd_wb(ctx, set_wb.enable); - exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb); - - /* src local path */ - cfg = gsc_read(GSC_IN_CON); - cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); - cfg |= (GSC_IN_PATH_LOCAL | GSC_IN_LOCAL_FIMD_WB); - gsc_write(cfg, GSC_IN_CON); - - /* dst dma memory */ - cfg = gsc_read(GSC_OUT_CON); - cfg |= GSC_OUT_PATH_MEMORY; - gsc_write(cfg, GSC_OUT_CON); - break; - case IPP_CMD_OUTPUT: - /* src dma memory */ - cfg = gsc_read(GSC_IN_CON); - cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); - cfg |= GSC_IN_PATH_MEMORY; - gsc_write(cfg, GSC_IN_CON); - - /* dst local path */ - cfg = gsc_read(GSC_OUT_CON); - cfg |= GSC_OUT_PATH_MEMORY; - gsc_write(cfg, GSC_OUT_CON); - break; - default: - ret = -EINVAL; - dev_err(dev, "invalid operations.\n"); - return ret; - } - - ret = gsc_set_prescaler(ctx, &ctx->sc, - &img_pos[EXYNOS_DRM_OPS_SRC], - &img_pos[EXYNOS_DRM_OPS_DST]); - if (ret) { - dev_err(dev, "failed to set prescaler.\n"); - return ret; - } - - gsc_set_scaler(ctx, &ctx->sc); - - cfg = gsc_read(GSC_ENABLE); - cfg |= GSC_ENABLE_ON; - gsc_write(cfg, GSC_ENABLE); - - return 0; -} - -static void gsc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd cmd) -{ - struct gsc_context *ctx = get_gsc_context(dev); - struct drm_exynos_ipp_set_wb set_wb = {0, 0}; - u32 cfg; - - DRM_DEBUG_KMS("cmd[%d]\n", cmd); - - switch (cmd) { - case IPP_CMD_M2M: - /* bypass */ - break; - case IPP_CMD_WB: - gsc_set_gscblk_fimd_wb(ctx, set_wb.enable); - exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb); - break; - case IPP_CMD_OUTPUT: - default: - dev_err(dev, "invalid operations.\n"); - break; - } - - gsc_handle_irq(ctx, false, false, true); - - /* reset sequence */ - gsc_write(0xff, GSC_OUT_BASE_ADDR_Y_MASK); - gsc_write(0xff, GSC_OUT_BASE_ADDR_CB_MASK); - gsc_write(0xff, GSC_OUT_BASE_ADDR_CR_MASK); - - cfg = gsc_read(GSC_ENABLE); - cfg &= ~GSC_ENABLE_ON; - gsc_write(cfg, GSC_ENABLE); -} - -static int gsc_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct gsc_context *ctx; - struct resource *res; - struct exynos_drm_ippdrv *ippdrv; - int ret; - - ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); - if (!ctx) - return -ENOMEM; - - if (dev->of_node) { - ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node, - "samsung,sysreg"); - if (IS_ERR(ctx->sysreg)) { - dev_warn(dev, "failed to get system register.\n"); - ctx->sysreg = NULL; - } - } - - /* clock control */ - ctx->gsc_clk = devm_clk_get(dev, "gscl"); - if (IS_ERR(ctx->gsc_clk)) { - dev_err(dev, "failed to get gsc clock.\n"); - return PTR_ERR(ctx->gsc_clk); - } - - /* resource memory */ - ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ctx->regs = devm_ioremap_resource(dev, ctx->regs_res); - if (IS_ERR(ctx->regs)) - return PTR_ERR(ctx->regs); - - /* resource irq */ - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!res) { - dev_err(dev, "failed to request irq resource.\n"); - return -ENOENT; - } - - ctx->irq = res->start; - ret = devm_request_threaded_irq(dev, ctx->irq, NULL, gsc_irq_handler, - IRQF_ONESHOT, "drm_gsc", ctx); - if (ret < 0) { - dev_err(dev, "failed to request irq.\n"); - return ret; - } - - /* context initailization */ - ctx->id = pdev->id; - - ippdrv = &ctx->ippdrv; - ippdrv->dev = dev; - ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &gsc_src_ops; - ippdrv->ops[EXYNOS_DRM_OPS_DST] = &gsc_dst_ops; - ippdrv->check_property = gsc_ippdrv_check_property; - ippdrv->reset = gsc_ippdrv_reset; - ippdrv->start = gsc_ippdrv_start; - ippdrv->stop = gsc_ippdrv_stop; - ret = gsc_init_prop_list(ippdrv); - if (ret < 0) { - dev_err(dev, "failed to init property list.\n"); - return ret; - } - - DRM_DEBUG_KMS("id[%d]ippdrv[%pK]\n", ctx->id, ippdrv); - - mutex_init(&ctx->lock); - platform_set_drvdata(pdev, ctx); - - pm_runtime_enable(dev); - - ret = exynos_drm_ippdrv_register(ippdrv); - if (ret < 0) { - dev_err(dev, "failed to register drm gsc device.\n"); - goto err_ippdrv_register; - } - - dev_info(dev, "drm gsc registered successfully.\n"); - - return 0; - -err_ippdrv_register: - pm_runtime_disable(dev); - return ret; -} - -static int gsc_remove(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct gsc_context *ctx = get_gsc_context(dev); - struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; - - exynos_drm_ippdrv_unregister(ippdrv); - mutex_destroy(&ctx->lock); - - pm_runtime_set_suspended(dev); - pm_runtime_disable(dev); - - return 0; -} - -static int __maybe_unused gsc_runtime_suspend(struct device *dev) -{ - struct gsc_context *ctx = get_gsc_context(dev); - - DRM_DEBUG_KMS("id[%d]\n", ctx->id); - - return gsc_clk_ctrl(ctx, false); -} - -static int __maybe_unused gsc_runtime_resume(struct device *dev) -{ - struct gsc_context *ctx = get_gsc_context(dev); - - DRM_DEBUG_KMS("id[%d]\n", ctx->id); - - return gsc_clk_ctrl(ctx, true); -} - -static const struct dev_pm_ops gsc_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, - pm_runtime_force_resume) - SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL) -}; - -static const struct of_device_id exynos_drm_gsc_of_match[] = { - { .compatible = "samsung,exynos5-gsc" }, - { }, -}; -MODULE_DEVICE_TABLE(of, exynos_drm_gsc_of_match); - -struct platform_driver gsc_driver = { - .probe = gsc_probe, - .remove = gsc_remove, - .driver = { - .name = "exynos-drm-gsc", - .owner = THIS_MODULE, - .pm = &gsc_pm_ops, - .of_match_table = of_match_ptr(exynos_drm_gsc_of_match), - }, -}; - +/* + * Copyright (C) 2012 Samsung Electronics Co.Ltd + * Authors: + * Eunchul Kim <chulspro.kim@samsung.com> + * Jinyoung Jeon <jy0.jeon@samsung.com> + * Sangmin Lee <lsmin.lee@samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ +#include <linux/kernel.h> +#include <linux/component.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/pm_runtime.h> +#include <linux/mfd/syscon.h> +#include <linux/of_device.h> +#include <linux/regmap.h> + +#include <drm/drmP.h> +#include <drm/exynos_drm.h> +#include "regs-gsc.h" +#include "exynos_drm_drv.h" +#include "exynos_drm_iommu.h" +#include "exynos_drm_ipp.h" + +/* + * GSC stands for General SCaler and + * supports image scaler/rotator and input/output DMA operations. + * input DMA reads image data from the memory. + * output DMA writes image data to memory. + * GSC supports image rotation and image effect functions. + */ + + +#define GSC_MAX_CLOCKS 8 +#define GSC_MAX_SRC 4 +#define GSC_MAX_DST 16 +#define GSC_RESET_TIMEOUT 50 +#define GSC_BUF_STOP 1 +#define GSC_BUF_START 2 +#define GSC_REG_SZ 16 +#define GSC_WIDTH_ITU_709 1280 +#define GSC_SC_UP_MAX_RATIO 65536 +#define GSC_SC_DOWN_RATIO_7_8 74898 +#define GSC_SC_DOWN_RATIO_6_8 87381 +#define GSC_SC_DOWN_RATIO_5_8 104857 +#define GSC_SC_DOWN_RATIO_4_8 131072 +#define GSC_SC_DOWN_RATIO_3_8 174762 +#define GSC_SC_DOWN_RATIO_2_8 262144 +#define GSC_CROP_MAX 8192 +#define GSC_CROP_MIN 32 +#define GSC_SCALE_MAX 4224 +#define GSC_SCALE_MIN 32 +#define GSC_COEF_RATIO 7 +#define GSC_COEF_PHASE 9 +#define GSC_COEF_ATTR 16 +#define GSC_COEF_H_8T 8 +#define GSC_COEF_V_4T 4 +#define GSC_COEF_DEPTH 3 +#define GSC_AUTOSUSPEND_DELAY 2000 + +#define get_gsc_context(dev) platform_get_drvdata(to_platform_device(dev)) +#define gsc_read(offset) readl(ctx->regs + (offset)) +#define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset)) + +/* + * A structure of scaler. + * + * @range: narrow, wide. + * @pre_shfactor: pre sclaer shift factor. + * @pre_hratio: horizontal ratio of the prescaler. + * @pre_vratio: vertical ratio of the prescaler. + * @main_hratio: the main scaler's horizontal ratio. + * @main_vratio: the main scaler's vertical ratio. + */ +struct gsc_scaler { + bool range; + u32 pre_shfactor; + u32 pre_hratio; + u32 pre_vratio; + unsigned long main_hratio; + unsigned long main_vratio; +}; + +/* + * A structure of gsc context. + * + * @regs_res: register resources. + * @regs: memory mapped io registers. + * @gsc_clk: gsc gate clock. + * @sc: scaler infomations. + * @id: gsc id. + * @irq: irq number. + * @rotation: supports rotation of src. + */ +struct gsc_context { + struct exynos_drm_ipp ipp; + struct drm_device *drm_dev; + struct device *dev; + struct exynos_drm_ipp_task *task; + struct exynos_drm_ipp_formats *formats; + unsigned int num_formats; + + struct resource *regs_res; + void __iomem *regs; + const char **clk_names; + struct clk *clocks[GSC_MAX_CLOCKS]; + int num_clocks; + struct gsc_scaler sc; + int id; + int irq; + bool rotation; +}; + +/** + * struct gsc_driverdata - per device type driver data for init time. + * + * @limits: picture size limits array + * @clk_names: names of clocks needed by this variant + * @num_clocks: the number of clocks needed by this variant + */ +struct gsc_driverdata { + const struct drm_exynos_ipp_limit *limits; + int num_limits; + const char *clk_names[GSC_MAX_CLOCKS]; + int num_clocks; +}; + +/* 8-tap Filter Coefficient */ +static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = { + { /* Ratio <= 65536 (~8:8) */ + { 0, 0, 0, 128, 0, 0, 0, 0 }, + { -1, 2, -6, 127, 7, -2, 1, 0 }, + { -1, 4, -12, 125, 16, -5, 1, 0 }, + { -1, 5, -15, 120, 25, -8, 2, 0 }, + { -1, 6, -18, 114, 35, -10, 3, -1 }, + { -1, 6, -20, 107, 46, -13, 4, -1 }, + { -2, 7, -21, 99, 57, -16, 5, -1 }, + { -1, 6, -20, 89, 68, -18, 5, -1 }, + { -1, 6, -20, 79, 79, -20, 6, -1 }, + { -1, 5, -18, 68, 89, -20, 6, -1 }, + { -1, 5, -16, 57, 99, -21, 7, -2 }, + { -1, 4, -13, 46, 107, -20, 6, -1 }, + { -1, 3, -10, 35, 114, -18, 6, -1 }, + { 0, 2, -8, 25, 120, -15, 5, -1 }, + { 0, 1, -5, 16, 125, -12, 4, -1 }, + { 0, 1, -2, 7, 127, -6, 2, -1 } + }, { /* 65536 < Ratio <= 74898 (~8:7) */ + { 3, -8, 14, 111, 13, -8, 3, 0 }, + { 2, -6, 7, 112, 21, -10, 3, -1 }, + { 2, -4, 1, 110, 28, -12, 4, -1 }, + { 1, -2, -3, 106, 36, -13, 4, -1 }, + { 1, -1, -7, 103, 44, -15, 4, -1 }, + { 1, 1, -11, 97, 53, -16, 4, -1 }, + { 0, 2, -13, 91, 61, -16, 4, -1 }, + { 0, 3, -15, 85, 69, -17, 4, -1 }, + { 0, 3, -16, 77, 77, -16, 3, 0 }, + { -1, 4, -17, 69, 85, -15, 3, 0 }, + { -1, 4, -16, 61, 91, -13, 2, 0 }, + { -1, 4, -16, 53, 97, -11, 1, 1 }, + { -1, 4, -15, 44, 103, -7, -1, 1 }, + { -1, 4, -13, 36, 106, -3, -2, 1 }, + { -1, 4, -12, 28, 110, 1, -4, 2 }, + { -1, 3, -10, 21, 112, 7, -6, 2 } + }, { /* 74898 < Ratio <= 87381 (~8:6) */ + { 2, -11, 25, 96, 25, -11, 2, 0 }, + { 2, -10, 19, 96, 31, -12, 2, 0 }, + { 2, -9, 14, 94, 37, -12, 2, 0 }, + { 2, -8, 10, 92, 43, -12, 1, 0 }, + { 2, -7, 5, 90, 49, -12, 1, 0 }, + { 2, -5, 1, 86, 55, -12, 0, 1 }, + { 2, -4, -2, 82, 61, -11, -1, 1 }, + { 1, -3, -5, 77, 67, -9, -1, 1 }, + { 1, -2, -7, 72, 72, -7, -2, 1 }, + { 1, -1, -9, 67, 77, -5, -3, 1 }, + { 1, -1, -11, 61, 82, -2, -4, 2 }, + { 1, 0, -12, 55, 86, 1, -5, 2 }, + { 0, 1, -12, 49, 90, 5, -7, 2 }, + { 0, 1, -12, 43, 92, 10, -8, 2 }, + { 0, 2, -12, 37, 94, 14, -9, 2 }, + { 0, 2, -12, 31, 96, 19, -10, 2 } + }, { /* 87381 < Ratio <= 104857 (~8:5) */ + { -1, -8, 33, 80, 33, -8, -1, 0 }, + { -1, -8, 28, 80, 37, -7, -2, 1 }, + { 0, -8, 24, 79, 41, -7, -2, 1 }, + { 0, -8, 20, 78, 46, -6, -3, 1 }, + { 0, -8, 16, 76, 50, -4, -3, 1 }, + { 0, -7, 13, 74, 54, -3, -4, 1 }, + { 1, -7, 10, 71, 58, -1, -5, 1 }, + { 1, -6, 6, 68, 62, 1, -5, 1 }, + { 1, -6, 4, 65, 65, 4, -6, 1 }, + { 1, -5, 1, 62, 68, 6, -6, 1 }, + { 1, -5, -1, 58, 71, 10, -7, 1 }, + { 1, -4, -3, 54, 74, 13, -7, 0 }, + { 1, -3, -4, 50, 76, 16, -8, 0 }, + { 1, -3, -6, 46, 78, 20, -8, 0 }, + { 1, -2, -7, 41, 79, 24, -8, 0 }, + { 1, -2, -7, 37, 80, 28, -8, -1 } + }, { /* 104857 < Ratio <= 131072 (~8:4) */ + { -3, 0, 35, 64, 35, 0, -3, 0 }, + { -3, -1, 32, 64, 38, 1, -3, 0 }, + { -2, -2, 29, 63, 41, 2, -3, 0 }, + { -2, -3, 27, 63, 43, 4, -4, 0 }, + { -2, -3, 24, 61, 46, 6, -4, 0 }, + { -2, -3, 21, 60, 49, 7, -4, 0 }, + { -1, -4, 19, 59, 51, 9, -4, -1 }, + { -1, -4, 16, 57, 53, 12, -4, -1 }, + { -1, -4, 14, 55, 55, 14, -4, -1 }, + { -1, -4, 12, 53, 57, 16, -4, -1 }, + { -1, -4, 9, 51, 59, 19, -4, -1 }, + { 0, -4, 7, 49, 60, 21, -3, -2 }, + { 0, -4, 6, 46, 61, 24, -3, -2 }, + { 0, -4, 4, 43, 63, 27, -3, -2 }, + { 0, -3, 2, 41, 63, 29, -2, -2 }, + { 0, -3, 1, 38, 64, 32, -1, -3 } + }, { /* 131072 < Ratio <= 174762 (~8:3) */ + { -1, 8, 33, 48, 33, 8, -1, 0 }, + { -1, 7, 31, 49, 35, 9, -1, -1 }, + { -1, 6, 30, 49, 36, 10, -1, -1 }, + { -1, 5, 28, 48, 38, 12, -1, -1 }, + { -1, 4, 26, 48, 39, 13, 0, -1 }, + { -1, 3, 24, 47, 41, 15, 0, -1 }, + { -1, 2, 23, 47, 42, 16, 0, -1 }, + { -1, 2, 21, 45, 43, 18, 1, -1 }, + { -1, 1, 19, 45, 45, 19, 1, -1 }, + { -1, 1, 18, 43, 45, 21, 2, -1 }, + { -1, 0, 16, 42, 47, 23, 2, -1 }, + { -1, 0, 15, 41, 47, 24, 3, -1 }, + { -1, 0, 13, 39, 48, 26, 4, -1 }, + { -1, -1, 12, 38, 48, 28, 5, -1 }, + { -1, -1, 10, 36, 49, 30, 6, -1 }, + { -1, -1, 9, 35, 49, 31, 7, -1 } + }, { /* 174762 < Ratio <= 262144 (~8:2) */ + { 2, 13, 30, 38, 30, 13, 2, 0 }, + { 2, 12, 29, 38, 30, 14, 3, 0 }, + { 2, 11, 28, 38, 31, 15, 3, 0 }, + { 2, 10, 26, 38, 32, 16, 4, 0 }, + { 1, 10, 26, 37, 33, 17, 4, 0 }, + { 1, 9, 24, 37, 34, 18, 5, 0 }, + { 1, 8, 24, 37, 34, 19, 5, 0 }, + { 1, 7, 22, 36, 35, 20, 6, 1 }, + { 1, 6, 21, 36, 36, 21, 6, 1 }, + { 1, 6, 20, 35, 36, 22, 7, 1 }, + { 0, 5, 19, 34, 37, 24, 8, 1 }, + { 0, 5, 18, 34, 37, 24, 9, 1 }, + { 0, 4, 17, 33, 37, 26, 10, 1 }, + { 0, 4, 16, 32, 38, 26, 10, 2 }, + { 0, 3, 15, 31, 38, 28, 11, 2 }, + { 0, 3, 14, 30, 38, 29, 12, 2 } + } +}; + +/* 4-tap Filter Coefficient */ +static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = { + { /* Ratio <= 65536 (~8:8) */ + { 0, 128, 0, 0 }, + { -4, 127, 5, 0 }, + { -6, 124, 11, -1 }, + { -8, 118, 19, -1 }, + { -8, 111, 27, -2 }, + { -8, 102, 37, -3 }, + { -8, 92, 48, -4 }, + { -7, 81, 59, -5 }, + { -6, 70, 70, -6 }, + { -5, 59, 81, -7 }, + { -4, 48, 92, -8 }, + { -3, 37, 102, -8 }, + { -2, 27, 111, -8 }, + { -1, 19, 118, -8 }, + { -1, 11, 124, -6 }, + { 0, 5, 127, -4 } + }, { /* 65536 < Ratio <= 74898 (~8:7) */ + { 8, 112, 8, 0 }, + { 4, 111, 14, -1 }, + { 1, 109, 20, -2 }, + { -2, 105, 27, -2 }, + { -3, 100, 34, -3 }, + { -5, 93, 43, -3 }, + { -5, 86, 51, -4 }, + { -5, 77, 60, -4 }, + { -5, 69, 69, -5 }, + { -4, 60, 77, -5 }, + { -4, 51, 86, -5 }, + { -3, 43, 93, -5 }, + { -3, 34, 100, -3 }, + { -2, 27, 105, -2 }, + { -2, 20, 109, 1 }, + { -1, 14, 111, 4 } + }, { /* 74898 < Ratio <= 87381 (~8:6) */ + { 16, 96, 16, 0 }, + { 12, 97, 21, -2 }, + { 8, 96, 26, -2 }, + { 5, 93, 32, -2 }, + { 2, 89, 39, -2 }, + { 0, 84, 46, -2 }, + { -1, 79, 53, -3 }, + { -2, 73, 59, -2 }, + { -2, 66, 66, -2 }, + { -2, 59, 73, -2 }, + { -3, 53, 79, -1 }, + { -2, 46, 84, 0 }, + { -2, 39, 89, 2 }, + { -2, 32, 93, 5 }, + { -2, 26, 96, 8 }, + { -2, 21, 97, 12 } + }, { /* 87381 < Ratio <= 104857 (~8:5) */ + { 22, 84, 22, 0 }, + { 18, 85, 26, -1 }, + { 14, 84, 31, -1 }, + { 11, 82, 36, -1 }, + { 8, 79, 42, -1 }, + { 6, 76, 47, -1 }, + { 4, 72, 52, 0 }, + { 2, 68, 58, 0 }, + { 1, 63, 63, 1 }, + { 0, 58, 68, 2 }, + { 0, 52, 72, 4 }, + { -1, 47, 76, 6 }, + { -1, 42, 79, 8 }, + { -1, 36, 82, 11 }, + { -1, 31, 84, 14 }, + { -1, 26, 85, 18 } + }, { /* 104857 < Ratio <= 131072 (~8:4) */ + { 26, 76, 26, 0 }, + { 22, 76, 30, 0 }, + { 19, 75, 34, 0 }, + { 16, 73, 38, 1 }, + { 13, 71, 43, 1 }, + { 10, 69, 47, 2 }, + { 8, 66, 51, 3 }, + { 6, 63, 55, 4 }, + { 5, 59, 59, 5 }, + { 4, 55, 63, 6 }, + { 3, 51, 66, 8 }, + { 2, 47, 69, 10 }, + { 1, 43, 71, 13 }, + { 1, 38, 73, 16 }, + { 0, 34, 75, 19 }, + { 0, 30, 76, 22 } + }, { /* 131072 < Ratio <= 174762 (~8:3) */ + { 29, 70, 29, 0 }, + { 26, 68, 32, 2 }, + { 23, 67, 36, 2 }, + { 20, 66, 39, 3 }, + { 17, 65, 43, 3 }, + { 15, 63, 46, 4 }, + { 12, 61, 50, 5 }, + { 10, 58, 53, 7 }, + { 8, 56, 56, 8 }, + { 7, 53, 58, 10 }, + { 5, 50, 61, 12 }, + { 4, 46, 63, 15 }, + { 3, 43, 65, 17 }, + { 3, 39, 66, 20 }, + { 2, 36, 67, 23 }, + { 2, 32, 68, 26 } + }, { /* 174762 < Ratio <= 262144 (~8:2) */ + { 32, 64, 32, 0 }, + { 28, 63, 34, 3 }, + { 25, 62, 37, 4 }, + { 22, 62, 40, 4 }, + { 19, 61, 43, 5 }, + { 17, 59, 46, 6 }, + { 15, 58, 48, 7 }, + { 13, 55, 51, 9 }, + { 11, 53, 53, 11 }, + { 9, 51, 55, 13 }, + { 7, 48, 58, 15 }, + { 6, 46, 59, 17 }, + { 5, 43, 61, 19 }, + { 4, 40, 62, 22 }, + { 4, 37, 62, 25 }, + { 3, 34, 63, 28 } + } +}; + +static int gsc_sw_reset(struct gsc_context *ctx) +{ + u32 cfg; + int count = GSC_RESET_TIMEOUT; + + /* s/w reset */ + cfg = (GSC_SW_RESET_SRESET); + gsc_write(cfg, GSC_SW_RESET); + + /* wait s/w reset complete */ + while (count--) { + cfg = gsc_read(GSC_SW_RESET); + if (!cfg) + break; + usleep_range(1000, 2000); + } + + if (cfg) { + DRM_ERROR("failed to reset gsc h/w.\n"); + return -EBUSY; + } + + /* reset sequence */ + cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); + cfg |= (GSC_IN_BASE_ADDR_MASK | + GSC_IN_BASE_ADDR_PINGPONG(0)); + gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); + gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); + gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); + + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); + cfg |= (GSC_OUT_BASE_ADDR_MASK | + GSC_OUT_BASE_ADDR_PINGPONG(0)); + gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); + gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); + gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); + + return 0; +} + +static void gsc_handle_irq(struct gsc_context *ctx, bool enable, + bool overflow, bool done) +{ + u32 cfg; + + DRM_DEBUG_KMS("enable[%d]overflow[%d]level[%d]\n", + enable, overflow, done); + + cfg = gsc_read(GSC_IRQ); + cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK); + + if (enable) + cfg |= GSC_IRQ_ENABLE; + else + cfg &= ~GSC_IRQ_ENABLE; + + if (overflow) + cfg &= ~GSC_IRQ_OR_MASK; + else + cfg |= GSC_IRQ_OR_MASK; + + if (done) + cfg &= ~GSC_IRQ_FRMDONE_MASK; + else + cfg |= GSC_IRQ_FRMDONE_MASK; + + gsc_write(cfg, GSC_IRQ); +} + + +static void gsc_src_set_fmt(struct gsc_context *ctx, u32 fmt) +{ + u32 cfg; + + DRM_DEBUG_KMS("fmt[0x%x]\n", fmt); + + cfg = gsc_read(GSC_IN_CON); + cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK | + GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK | + GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE | + GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK); + + switch (fmt) { + case DRM_FORMAT_RGB565: + cfg |= GSC_IN_RGB565; + break; + case DRM_FORMAT_XRGB8888: + cfg |= GSC_IN_XRGB8888; + break; + case DRM_FORMAT_BGRX8888: + cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP); + break; + case DRM_FORMAT_YUYV: + cfg |= (GSC_IN_YUV422_1P | + GSC_IN_YUV422_1P_ORDER_LSB_Y | + GSC_IN_CHROMA_ORDER_CBCR); + break; + case DRM_FORMAT_YVYU: + cfg |= (GSC_IN_YUV422_1P | + GSC_IN_YUV422_1P_ORDER_LSB_Y | + GSC_IN_CHROMA_ORDER_CRCB); + break; + case DRM_FORMAT_UYVY: + cfg |= (GSC_IN_YUV422_1P | + GSC_IN_YUV422_1P_OEDER_LSB_C | + GSC_IN_CHROMA_ORDER_CBCR); + break; + case DRM_FORMAT_VYUY: + cfg |= (GSC_IN_YUV422_1P | + GSC_IN_YUV422_1P_OEDER_LSB_C | + GSC_IN_CHROMA_ORDER_CRCB); + break; + case DRM_FORMAT_NV21: + case DRM_FORMAT_NV61: + cfg |= (GSC_IN_CHROMA_ORDER_CRCB | + GSC_IN_YUV420_2P); + break; + case DRM_FORMAT_YUV422: + cfg |= GSC_IN_YUV422_3P; + break; + case DRM_FORMAT_YUV420: + case DRM_FORMAT_YVU420: + cfg |= GSC_IN_YUV420_3P; + break; + case DRM_FORMAT_NV12: + case DRM_FORMAT_NV16: + cfg |= (GSC_IN_CHROMA_ORDER_CBCR | + GSC_IN_YUV420_2P); + break; + } + + gsc_write(cfg, GSC_IN_CON); +} + +static void gsc_src_set_transf(struct gsc_context *ctx, unsigned int rotation) +{ + unsigned int degree = rotation & DRM_MODE_ROTATE_MASK; + u32 cfg; + + cfg = gsc_read(GSC_IN_CON); + cfg &= ~GSC_IN_ROT_MASK; + + switch (degree) { + case DRM_MODE_ROTATE_0: + if (rotation & DRM_MODE_REFLECT_Y) + cfg |= GSC_IN_ROT_XFLIP; + if (rotation & DRM_MODE_REFLECT_X) + cfg |= GSC_IN_ROT_YFLIP; + break; + case DRM_MODE_ROTATE_90: + if (rotation & DRM_MODE_REFLECT_Y) + cfg |= GSC_IN_ROT_90_XFLIP; + else if (rotation & DRM_MODE_REFLECT_X) + cfg |= GSC_IN_ROT_90_YFLIP; + else + cfg |= GSC_IN_ROT_90; + break; + case DRM_MODE_ROTATE_180: + cfg |= GSC_IN_ROT_180; + if (rotation & DRM_MODE_REFLECT_Y) + cfg &= ~GSC_IN_ROT_XFLIP; + if (rotation & DRM_MODE_REFLECT_X) + cfg &= ~GSC_IN_ROT_YFLIP; + break; + case DRM_MODE_ROTATE_270: + cfg |= GSC_IN_ROT_270; + if (rotation & DRM_MODE_REFLECT_Y) + cfg &= ~GSC_IN_ROT_XFLIP; + if (rotation & DRM_MODE_REFLECT_X) + cfg &= ~GSC_IN_ROT_YFLIP; + break; + } + + gsc_write(cfg, GSC_IN_CON); + + ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0; +} + +static void gsc_src_set_size(struct gsc_context *ctx, + struct exynos_drm_ipp_buffer *buf) +{ + struct gsc_scaler *sc = &ctx->sc; + u32 cfg; + + /* pixel offset */ + cfg = (GSC_SRCIMG_OFFSET_X(buf->rect.x) | + GSC_SRCIMG_OFFSET_Y(buf->rect.y)); + gsc_write(cfg, GSC_SRCIMG_OFFSET); + + /* cropped size */ + cfg = (GSC_CROPPED_WIDTH(buf->rect.w) | + GSC_CROPPED_HEIGHT(buf->rect.h)); + gsc_write(cfg, GSC_CROPPED_SIZE); + + /* original size */ + cfg = gsc_read(GSC_SRCIMG_SIZE); + cfg &= ~(GSC_SRCIMG_HEIGHT_MASK | + GSC_SRCIMG_WIDTH_MASK); + + cfg |= (GSC_SRCIMG_WIDTH(buf->buf.width) | + GSC_SRCIMG_HEIGHT(buf->buf.height)); + + gsc_write(cfg, GSC_SRCIMG_SIZE); + + cfg = gsc_read(GSC_IN_CON); + cfg &= ~GSC_IN_RGB_TYPE_MASK; + + if (buf->rect.w >= GSC_WIDTH_ITU_709) + if (sc->range) + cfg |= GSC_IN_RGB_HD_WIDE; + else + cfg |= GSC_IN_RGB_HD_NARROW; + else + if (sc->range) + cfg |= GSC_IN_RGB_SD_WIDE; + else + cfg |= GSC_IN_RGB_SD_NARROW; + + gsc_write(cfg, GSC_IN_CON); +} + +static void gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id, + bool enqueue) +{ + bool masked = !enqueue; + u32 cfg; + u32 mask = 0x00000001 << buf_id; + + /* mask register set */ + cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); + + /* sequence id */ + cfg &= ~mask; + cfg |= masked << buf_id; + gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); + gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); + gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); +} + +static void gsc_src_set_addr(struct gsc_context *ctx, u32 buf_id, + struct exynos_drm_ipp_buffer *buf) +{ + /* address register set */ + gsc_write(buf->dma_addr[0], GSC_IN_BASE_ADDR_Y(buf_id)); + gsc_write(buf->dma_addr[1], GSC_IN_BASE_ADDR_CB(buf_id)); + gsc_write(buf->dma_addr[2], GSC_IN_BASE_ADDR_CR(buf_id)); + + gsc_src_set_buf_seq(ctx, buf_id, true); +} + +static void gsc_dst_set_fmt(struct gsc_context *ctx, u32 fmt) +{ + u32 cfg; + + DRM_DEBUG_KMS("fmt[0x%x]\n", fmt); + + cfg = gsc_read(GSC_OUT_CON); + cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK | + GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK | + GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK | + GSC_OUT_GLOBAL_ALPHA_MASK); + + switch (fmt) { + case DRM_FORMAT_RGB565: + cfg |= GSC_OUT_RGB565; + break; + case DRM_FORMAT_XRGB8888: + cfg |= GSC_OUT_XRGB8888; + break; + case DRM_FORMAT_BGRX8888: + cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP); + break; + case DRM_FORMAT_YUYV: + cfg |= (GSC_OUT_YUV422_1P | + GSC_OUT_YUV422_1P_ORDER_LSB_Y | + GSC_OUT_CHROMA_ORDER_CBCR); + break; + case DRM_FORMAT_YVYU: + cfg |= (GSC_OUT_YUV422_1P | + GSC_OUT_YUV422_1P_ORDER_LSB_Y | + GSC_OUT_CHROMA_ORDER_CRCB); + break; + case DRM_FORMAT_UYVY: + cfg |= (GSC_OUT_YUV422_1P | + GSC_OUT_YUV422_1P_OEDER_LSB_C | + GSC_OUT_CHROMA_ORDER_CBCR); + break; + case DRM_FORMAT_VYUY: + cfg |= (GSC_OUT_YUV422_1P | + GSC_OUT_YUV422_1P_OEDER_LSB_C | + GSC_OUT_CHROMA_ORDER_CRCB); + break; + case DRM_FORMAT_NV21: + case DRM_FORMAT_NV61: + cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P); + break; + case DRM_FORMAT_YUV422: + case DRM_FORMAT_YUV420: + case DRM_FORMAT_YVU420: + cfg |= GSC_OUT_YUV420_3P; + break; + case DRM_FORMAT_NV12: + case DRM_FORMAT_NV16: + cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | + GSC_OUT_YUV420_2P); + break; + } + + gsc_write(cfg, GSC_OUT_CON); +} + +static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio) +{ + DRM_DEBUG_KMS("src[%d]dst[%d]\n", src, dst); + + if (src >= dst * 8) { + DRM_ERROR("failed to make ratio and shift.\n"); + return -EINVAL; + } else if (src >= dst * 4) + *ratio = 4; + else if (src >= dst * 2) + *ratio = 2; + else + *ratio = 1; + + return 0; +} + +static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor) +{ + if (hratio == 4 && vratio == 4) + *shfactor = 4; + else if ((hratio == 4 && vratio == 2) || + (hratio == 2 && vratio == 4)) + *shfactor = 3; + else if ((hratio == 4 && vratio == 1) || + (hratio == 1 && vratio == 4) || + (hratio == 2 && vratio == 2)) + *shfactor = 2; + else if (hratio == 1 && vratio == 1) + *shfactor = 0; + else + *shfactor = 1; +} + +static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc, + struct drm_exynos_ipp_task_rect *src, struct drm_exynos_ipp_task_rect *dst) +{ + u32 cfg; + u32 src_w, src_h, dst_w, dst_h; + int ret = 0; + + src_w = src->w; + src_h = src->h; + + if (ctx->rotation) { + dst_w = dst->h; + dst_h = dst->w; + } else { + dst_w = dst->w; + dst_h = dst->h; + } + + ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio); + if (ret) { + dev_err(ctx->dev, "failed to get ratio horizontal.\n"); + return ret; + } + + ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio); + if (ret) { + dev_err(ctx->dev, "failed to get ratio vertical.\n"); + return ret; + } + + DRM_DEBUG_KMS("pre_hratio[%d]pre_vratio[%d]\n", + sc->pre_hratio, sc->pre_vratio); + + sc->main_hratio = (src_w << 16) / dst_w; + sc->main_vratio = (src_h << 16) / dst_h; + + DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n", + sc->main_hratio, sc->main_vratio); + + gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio, + &sc->pre_shfactor); + + DRM_DEBUG_KMS("pre_shfactor[%d]\n", sc->pre_shfactor); + + cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) | + GSC_PRESC_H_RATIO(sc->pre_hratio) | + GSC_PRESC_V_RATIO(sc->pre_vratio)); + gsc_write(cfg, GSC_PRE_SCALE_RATIO); + + return ret; +} + +static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio) +{ + int i, j, k, sc_ratio; + + if (main_hratio <= GSC_SC_UP_MAX_RATIO) + sc_ratio = 0; + else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8) + sc_ratio = 1; + else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8) + sc_ratio = 2; + else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8) + sc_ratio = 3; + else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8) + sc_ratio = 4; + else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8) + sc_ratio = 5; + else + sc_ratio = 6; + + for (i = 0; i < GSC_COEF_PHASE; i++) + for (j = 0; j < GSC_COEF_H_8T; j++) + for (k = 0; k < GSC_COEF_DEPTH; k++) + gsc_write(h_coef_8t[sc_ratio][i][j], + GSC_HCOEF(i, j, k)); +} + +static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio) +{ + int i, j, k, sc_ratio; + + if (main_vratio <= GSC_SC_UP_MAX_RATIO) + sc_ratio = 0; + else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8) + sc_ratio = 1; + else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8) + sc_ratio = 2; + else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8) + sc_ratio = 3; + else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8) + sc_ratio = 4; + else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8) + sc_ratio = 5; + else + sc_ratio = 6; + + for (i = 0; i < GSC_COEF_PHASE; i++) + for (j = 0; j < GSC_COEF_V_4T; j++) + for (k = 0; k < GSC_COEF_DEPTH; k++) + gsc_write(v_coef_4t[sc_ratio][i][j], + GSC_VCOEF(i, j, k)); +} + +static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc) +{ + u32 cfg; + + DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n", + sc->main_hratio, sc->main_vratio); + + gsc_set_h_coef(ctx, sc->main_hratio); + cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio); + gsc_write(cfg, GSC_MAIN_H_RATIO); + + gsc_set_v_coef(ctx, sc->main_vratio); + cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio); + gsc_write(cfg, GSC_MAIN_V_RATIO); +} + +static void gsc_dst_set_size(struct gsc_context *ctx, + struct exynos_drm_ipp_buffer *buf) +{ + struct gsc_scaler *sc = &ctx->sc; + u32 cfg; + + /* pixel offset */ + cfg = (GSC_DSTIMG_OFFSET_X(buf->rect.x) | + GSC_DSTIMG_OFFSET_Y(buf->rect.y)); + gsc_write(cfg, GSC_DSTIMG_OFFSET); + + /* scaled size */ + if (ctx->rotation) + cfg = (GSC_SCALED_WIDTH(buf->rect.h) | + GSC_SCALED_HEIGHT(buf->rect.w)); + else + cfg = (GSC_SCALED_WIDTH(buf->rect.w) | + GSC_SCALED_HEIGHT(buf->rect.h)); + gsc_write(cfg, GSC_SCALED_SIZE); + + /* original size */ + cfg = gsc_read(GSC_DSTIMG_SIZE); + cfg &= ~(GSC_DSTIMG_HEIGHT_MASK | GSC_DSTIMG_WIDTH_MASK); + cfg |= GSC_DSTIMG_WIDTH(buf->buf.width) | + GSC_DSTIMG_HEIGHT(buf->buf.height); + gsc_write(cfg, GSC_DSTIMG_SIZE); + + cfg = gsc_read(GSC_OUT_CON); + cfg &= ~GSC_OUT_RGB_TYPE_MASK; + + if (buf->rect.w >= GSC_WIDTH_ITU_709) + if (sc->range) + cfg |= GSC_OUT_RGB_HD_WIDE; + else + cfg |= GSC_OUT_RGB_HD_NARROW; + else + if (sc->range) + cfg |= GSC_OUT_RGB_SD_WIDE; + else + cfg |= GSC_OUT_RGB_SD_NARROW; + + gsc_write(cfg, GSC_OUT_CON); +} + +static int gsc_dst_get_buf_seq(struct gsc_context *ctx) +{ + u32 cfg, i, buf_num = GSC_REG_SZ; + u32 mask = 0x00000001; + + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); + + for (i = 0; i < GSC_REG_SZ; i++) + if (cfg & (mask << i)) + buf_num--; + + DRM_DEBUG_KMS("buf_num[%d]\n", buf_num); + + return buf_num; +} + +static void gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id, + bool enqueue) +{ + bool masked = !enqueue; + u32 cfg; + u32 mask = 0x00000001 << buf_id; + + /* mask register set */ + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); + + /* sequence id */ + cfg &= ~mask; + cfg |= masked << buf_id; + gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); + gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); + gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); + + /* interrupt enable */ + if (enqueue && gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START) + gsc_handle_irq(ctx, true, false, true); + + /* interrupt disable */ + if (!enqueue && gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP) + gsc_handle_irq(ctx, false, false, true); +} + +static void gsc_dst_set_addr(struct gsc_context *ctx, + u32 buf_id, struct exynos_drm_ipp_buffer *buf) +{ + /* address register set */ + gsc_write(buf->dma_addr[0], GSC_OUT_BASE_ADDR_Y(buf_id)); + gsc_write(buf->dma_addr[1], GSC_OUT_BASE_ADDR_CB(buf_id)); + gsc_write(buf->dma_addr[2], GSC_OUT_BASE_ADDR_CR(buf_id)); + + gsc_dst_set_buf_seq(ctx, buf_id, true); +} + +static int gsc_get_src_buf_index(struct gsc_context *ctx) +{ + u32 cfg, curr_index, i; + u32 buf_id = GSC_MAX_SRC; + + DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); + + cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); + curr_index = GSC_IN_CURR_GET_INDEX(cfg); + + for (i = curr_index; i < GSC_MAX_SRC; i++) { + if (!((cfg >> i) & 0x1)) { + buf_id = i; + break; + } + } + + DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, + curr_index, buf_id); + + if (buf_id == GSC_MAX_SRC) { + DRM_ERROR("failed to get in buffer index.\n"); + return -EINVAL; + } + + gsc_src_set_buf_seq(ctx, buf_id, false); + + return buf_id; +} + +static int gsc_get_dst_buf_index(struct gsc_context *ctx) +{ + u32 cfg, curr_index, i; + u32 buf_id = GSC_MAX_DST; + + DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); + + cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); + curr_index = GSC_OUT_CURR_GET_INDEX(cfg); + + for (i = curr_index; i < GSC_MAX_DST; i++) { + if (!((cfg >> i) & 0x1)) { + buf_id = i; + break; + } + } + + if (buf_id == GSC_MAX_DST) { + DRM_ERROR("failed to get out buffer index.\n"); + return -EINVAL; + } + + gsc_dst_set_buf_seq(ctx, buf_id, false); + + DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, + curr_index, buf_id); + + return buf_id; +} + +static irqreturn_t gsc_irq_handler(int irq, void *dev_id) +{ + struct gsc_context *ctx = dev_id; + u32 status; + int err = 0; + + DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); + + status = gsc_read(GSC_IRQ); + if (status & GSC_IRQ_STATUS_OR_IRQ) { + dev_err(ctx->dev, "occurred overflow at %d, status 0x%x.\n", + ctx->id, status); + err = -EINVAL; + } + + if (status & GSC_IRQ_STATUS_OR_FRM_DONE) { + int src_buf_id, dst_buf_id; + + dev_dbg(ctx->dev, "occurred frame done at %d, status 0x%x.\n", + ctx->id, status); + + src_buf_id = gsc_get_src_buf_index(ctx); + dst_buf_id = gsc_get_dst_buf_index(ctx); + + DRM_DEBUG_KMS("buf_id_src[%d]buf_id_dst[%d]\n", src_buf_id, + dst_buf_id); + + if (src_buf_id < 0 || dst_buf_id < 0) + err = -EINVAL; + } + + if (ctx->task) { + struct exynos_drm_ipp_task *task = ctx->task; + + ctx->task = NULL; + pm_runtime_mark_last_busy(ctx->dev); + pm_runtime_put_autosuspend(ctx->dev); + exynos_drm_ipp_task_done(task, err); + } + + return IRQ_HANDLED; +} + +static int gsc_reset(struct gsc_context *ctx) +{ + struct gsc_scaler *sc = &ctx->sc; + int ret; + + /* reset h/w block */ + ret = gsc_sw_reset(ctx); + if (ret < 0) { + dev_err(ctx->dev, "failed to reset hardware.\n"); + return ret; + } + + /* scaler setting */ + memset(&ctx->sc, 0x0, sizeof(ctx->sc)); + sc->range = true; + + return 0; +} + +static void gsc_start(struct gsc_context *ctx) +{ + u32 cfg; + + gsc_handle_irq(ctx, true, false, true); + + /* enable one shot */ + cfg = gsc_read(GSC_ENABLE); + cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK | + GSC_ENABLE_CLK_GATE_MODE_MASK); + cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT; + gsc_write(cfg, GSC_ENABLE); + + /* src dma memory */ + cfg = gsc_read(GSC_IN_CON); + cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); + cfg |= GSC_IN_PATH_MEMORY; + gsc_write(cfg, GSC_IN_CON); + + /* dst dma memory */ + cfg = gsc_read(GSC_OUT_CON); + cfg |= GSC_OUT_PATH_MEMORY; + gsc_write(cfg, GSC_OUT_CON); + + gsc_set_scaler(ctx, &ctx->sc); + + cfg = gsc_read(GSC_ENABLE); + cfg |= GSC_ENABLE_ON; + gsc_write(cfg, GSC_ENABLE); +} + +static int gsc_commit(struct exynos_drm_ipp *ipp, + struct exynos_drm_ipp_task *task) +{ + struct gsc_context *ctx = container_of(ipp, struct gsc_context, ipp); + int ret; + + pm_runtime_get_sync(ctx->dev); + ctx->task = task; + + ret = gsc_reset(ctx); + if (ret) { + pm_runtime_put_autosuspend(ctx->dev); + ctx->task = NULL; + return ret; + } + + gsc_src_set_fmt(ctx, task->src.buf.fourcc); + gsc_src_set_transf(ctx, task->transform.rotation); + gsc_src_set_size(ctx, &task->src); + gsc_src_set_addr(ctx, 0, &task->src); + gsc_dst_set_fmt(ctx, task->dst.buf.fourcc); + gsc_dst_set_size(ctx, &task->dst); + gsc_dst_set_addr(ctx, 0, &task->dst); + gsc_set_prescaler(ctx, &ctx->sc, &task->src.rect, &task->dst.rect); + gsc_start(ctx); + + return 0; +} + +static void gsc_abort(struct exynos_drm_ipp *ipp, + struct exynos_drm_ipp_task *task) +{ + struct gsc_context *ctx = + container_of(ipp, struct gsc_context, ipp); + + gsc_reset(ctx); + if (ctx->task) { + struct exynos_drm_ipp_task *task = ctx->task; + + ctx->task = NULL; + pm_runtime_mark_last_busy(ctx->dev); + pm_runtime_put_autosuspend(ctx->dev); + exynos_drm_ipp_task_done(task, -EIO); + } +} + +static struct exynos_drm_ipp_funcs ipp_funcs = { + .commit = gsc_commit, + .abort = gsc_abort, +}; + +static int gsc_bind(struct device *dev, struct device *master, void *data) +{ + struct gsc_context *ctx = dev_get_drvdata(dev); + struct drm_device *drm_dev = data; + struct exynos_drm_ipp *ipp = &ctx->ipp; + + ctx->drm_dev = drm_dev; + drm_iommu_attach_device(drm_dev, dev); + + exynos_drm_ipp_register(drm_dev, ipp, &ipp_funcs, + DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | + DRM_EXYNOS_IPP_CAP_SCALE | DRM_EXYNOS_IPP_CAP_CONVERT, + ctx->formats, ctx->num_formats, "gsc"); + + dev_info(dev, "The exynos gscaler has been probed successfully\n"); + + return 0; +} + +static void gsc_unbind(struct device *dev, struct device *master, + void *data) +{ + struct gsc_context *ctx = dev_get_drvdata(dev); + struct drm_device *drm_dev = data; + struct exynos_drm_ipp *ipp = &ctx->ipp; + + exynos_drm_ipp_unregister(drm_dev, ipp); + drm_iommu_detach_device(drm_dev, dev); +} + +static const struct component_ops gsc_component_ops = { + .bind = gsc_bind, + .unbind = gsc_unbind, +}; + +static const unsigned int gsc_formats[] = { + DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_BGRX8888, + DRM_FORMAT_NV12, DRM_FORMAT_NV16, DRM_FORMAT_NV21, DRM_FORMAT_NV61, + DRM_FORMAT_UYVY, DRM_FORMAT_VYUY, DRM_FORMAT_YUYV, DRM_FORMAT_YVYU, + DRM_FORMAT_YUV420, DRM_FORMAT_YVU420, DRM_FORMAT_YUV422, +}; + +static int gsc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct gsc_driverdata *driver_data; + struct exynos_drm_ipp_formats *formats; + struct gsc_context *ctx; + struct resource *res; + int ret, i; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + formats = devm_kzalloc(dev, sizeof(*formats) * + (ARRAY_SIZE(gsc_formats)), GFP_KERNEL); + if (!formats) + return -ENOMEM; + + driver_data = (struct gsc_driverdata *)of_device_get_match_data(dev); + ctx->dev = dev; + ctx->num_clocks = driver_data->num_clocks; + ctx->clk_names = driver_data->clk_names; + + for (i = 0; i < ARRAY_SIZE(gsc_formats); i++) { + formats[i].fourcc = gsc_formats[i]; + formats[i].type = DRM_EXYNOS_IPP_FORMAT_SOURCE | + DRM_EXYNOS_IPP_FORMAT_DESTINATION; + formats[i].limits = driver_data->limits; + formats[i].num_limits = driver_data->num_limits; + } + ctx->formats = formats; + ctx->num_formats = ARRAY_SIZE(gsc_formats); + + /* clock control */ + for (i = 0; i < ctx->num_clocks; i++) { + ctx->clocks[i] = devm_clk_get(dev, ctx->clk_names[i]); + if (IS_ERR(ctx->clocks[i])) { + dev_err(dev, "failed to get clock: %s\n", + ctx->clk_names[i]); + return PTR_ERR(ctx->clocks[i]); + } + } + + /* resource memory */ + ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ctx->regs = devm_ioremap_resource(dev, ctx->regs_res); + if (IS_ERR(ctx->regs)) + return PTR_ERR(ctx->regs); + + /* resource irq */ + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_err(dev, "failed to request irq resource.\n"); + return -ENOENT; + } + + ctx->irq = res->start; + ret = devm_request_irq(dev, ctx->irq, gsc_irq_handler, 0, + dev_name(dev), ctx); + if (ret < 0) { + dev_err(dev, "failed to request irq.\n"); + return ret; + } + + /* context initailization */ + ctx->id = pdev->id; + + platform_set_drvdata(pdev, ctx); + + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, GSC_AUTOSUSPEND_DELAY); + pm_runtime_enable(dev); + + ret = component_add(dev, &gsc_component_ops); + if (ret) + goto err_pm_dis; + + dev_info(dev, "drm gsc registered successfully.\n"); + + return 0; + +err_pm_dis: + pm_runtime_dont_use_autosuspend(dev); + pm_runtime_disable(dev); + return ret; +} + +static int gsc_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + pm_runtime_dont_use_autosuspend(dev); + pm_runtime_disable(dev); + + return 0; +} + +static int __maybe_unused gsc_runtime_suspend(struct device *dev) +{ + struct gsc_context *ctx = get_gsc_context(dev); + int i; + + DRM_DEBUG_KMS("id[%d]\n", ctx->id); + + for (i = ctx->num_clocks - 1; i >= 0; i--) + clk_disable_unprepare(ctx->clocks[i]); + + return 0; +} + +static int __maybe_unused gsc_runtime_resume(struct device *dev) +{ + struct gsc_context *ctx = get_gsc_context(dev); + int i; + + DRM_DEBUG_KMS("id[%d]\n", ctx->id); + + for (i = 0; i < ctx->num_clocks; i++) { + int ret = clk_prepare_enable(ctx->clocks[i]); + if (ret) { + while (--i > 0) + clk_disable_unprepare(ctx->clocks[i]); + return ret; + } + } + return 0; +} + +static const struct dev_pm_ops gsc_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL) +}; + +static const struct drm_exynos_ipp_limit gsc_5250_limits[] = { + { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 4800, 8 }, .v = { 16, 3344, 8 }) }, + { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) }, + { IPP_SIZE_LIMIT(ROTATED, .h = { 32, 2048 }, .v = { 16, 2048 }) }, + { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 }, + .v = { (1 << 16) / 16, (1 << 16) * 8 }) }, +}; + +static const struct drm_exynos_ipp_limit gsc_5420_limits[] = { + { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 4800, 8 }, .v = { 16, 3344, 8 }) }, + { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) }, + { IPP_SIZE_LIMIT(ROTATED, .h = { 16, 2016 }, .v = { 8, 2016 }) }, + { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 }, + .v = { (1 << 16) / 16, (1 << 16) * 8 }) }, +}; + +static const struct drm_exynos_ipp_limit gsc_5433_limits[] = { + { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 8191, 8 }, .v = { 16, 8191, 8 }) }, + { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) }, + { IPP_SIZE_LIMIT(ROTATED, .h = { 16, 2047 }, .v = { 8, 2047 }) }, + { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 }, + .v = { (1 << 16) / 16, (1 << 16) * 8 }) }, +}; + +static struct gsc_driverdata gsc_exynos5250_drvdata = { + .clk_names = {"gscl"}, + .num_clocks = 1, + .limits = gsc_5250_limits, + .num_limits = ARRAY_SIZE(gsc_5250_limits), +}; + +static struct gsc_driverdata gsc_exynos5420_drvdata = { + .clk_names = {"gscl"}, + .num_clocks = 1, + .limits = gsc_5420_limits, + .num_limits = ARRAY_SIZE(gsc_5420_limits), +}; + +static struct gsc_driverdata gsc_exynos5433_drvdata = { + .clk_names = {"pclk", "aclk", "aclk_xiu", "aclk_gsclbend"}, + .num_clocks = 4, + .limits = gsc_5433_limits, + .num_limits = ARRAY_SIZE(gsc_5433_limits), +}; + +static const struct of_device_id exynos_drm_gsc_of_match[] = { + { + .compatible = "samsung,exynos5-gsc", + .data = &gsc_exynos5250_drvdata, + }, { + .compatible = "samsung,exynos5250-gsc", + .data = &gsc_exynos5250_drvdata, + }, { + .compatible = "samsung,exynos5420-gsc", + .data = &gsc_exynos5420_drvdata, + }, { + .compatible = "samsung,exynos5433-gsc", + .data = &gsc_exynos5433_drvdata, + }, { + }, +}; +MODULE_DEVICE_TABLE(of, exynos_drm_gsc_of_match); + +struct platform_driver gsc_driver = { + .probe = gsc_probe, + .remove = gsc_remove, + .driver = { + .name = "exynos-drm-gsc", + .owner = THIS_MODULE, + .pm = &gsc_pm_ops, + .of_match_table = of_match_ptr(exynos_drm_gsc_of_match), + }, +}; + diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.h b/drivers/gpu/drm/exynos/exynos_drm_gsc.h deleted file mode 100644 index 29ec1c5efcf2..000000000000 --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.h +++ /dev/null @@ -1,24 +0,0 @@ -/* - * Copyright (c) 2012 Samsung Electronics Co., Ltd. - * - * Authors: - * Eunchul Kim <chulspro.kim@samsung.com> - * Jinyoung Jeon <jy0.jeon@samsung.com> - * Sangmin Lee <lsmin.lee@samsung.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#ifndef _EXYNOS_DRM_GSC_H_ -#define _EXYNOS_DRM_GSC_H_ - -/* - * TODO - * FIMD output interface notifier callback. - * Mixer output interface notifier callback. - */ - -#endif /* _EXYNOS_DRM_GSC_H_ */