[v10,18/21] drm/mediatek: Add mt8195 Embedded DisplayPort driver

Message ID	20220523104758.29531-19-granquet@baylibre.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org> From: Guillaume Ranquet <granquet@baylibre.com> To: Chun-Kuang Hu <chunkuang.hu@kernel.org>, Philipp Zabel <p.zabel@pengutronix.de>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Maxime Ripard <mripard@kernel.org>, Thomas Zimmermann <tzimmermann@suse.de>, Matthias Brugger <matthias.bgg@gmail.com>, Chunfeng Yun <chunfeng.yun@mediatek.com>, Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org>, Helge Deller <deller@gmx.de>, CK Hu <ck.hu@mediatek.com>, Jitao shi <jitao.shi@mediatek.com> Cc: Markus Schneider-Pargmann <msp@baylibre.com>, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-phy@lists.infradead.org, linux-fbdev@vger.kernel.org Subject: [PATCH v10 18/21] drm/mediatek: Add mt8195 Embedded DisplayPort driver Date: Mon, 23 May 2022 12:47:51 +0200 Message-Id: <20220523104758.29531-19-granquet@baylibre.com> In-Reply-To: <20220523104758.29531-1-granquet@baylibre.com> References: <20220523104758.29531-1-granquet@baylibre.com> MIME-Version: 1.0 Precedence: list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org
Series	drm/mediatek: Add mt8195 DisplayPort driver \| expand [v10,00/21] drm/mediatek: Add mt8195 DisplayPort driver [v10,01/21] dt-bindings: mediatek,dpi: Add DPINTF compatible [v10,02/21] dt-bindings: mediatek,dp: Add Display Port binding [v10,03/21] drm/edid: Convert cea_sad helper struct to kernelDoc [v10,04/21] drm/edid: Add cea_sad helpers for freq/length [v10,05/21] video/hdmi: Add audio_infoframe packing for DP [v10,06/21] drm/mediatek: dpi: move dpi limits to SoC config [v10,07/21] drm/mediatek: dpi: implement a CK/DE pol toggle in SoC config [v10,08/21] drm/mediatek: dpi: implement a swap_input toggle in SoC config [v10,09/21] drm/mediatek: dpi: move dimension mask to SoC config [v10,10/21] drm/mediatek: dpi: move hvsize_mask to SoC config [v10,11/21] drm/mediatek: dpi: move swap_shift to SoC config [v10,12/21] drm/mediatek: dpi: move the yuv422_en_bit to SoC config [v10,13/21] drm/mediatek: dpi: move the csc_enable bit to SoC config [v10,14/21] drm/mediatek: dpi: Add dpintf support [v10,15/21] drm/mediatek: dpi: Only enable dpi after the bridge is enabled [v10,16/21] drm/meditek: dpi: Add matrix_sel helper [v10,17/21] phy: phy-mtk-dp: Add driver for DP phy [v10,18/21] drm/mediatek: Add mt8195 Embedded DisplayPort driver [v10,19/21] drm/mediatek: Add mt8195 External DisplayPort support [v10,20/21] drm/mediatek: add hpd debounce [v10,21/21] drm/mediatek: DP audio support for mt8195

diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig index 2976d21e9a34..a37b6ec9f01e 100644 --- a/drivers/gpu/drm/mediatek/Kconfig +++ b/drivers/gpu/drm/mediatek/Kconfig @@ -21,6 +21,14 @@ config DRM_MEDIATEK This driver provides kernel mode setting and buffer management to userspace. +config DRM_MEDIATEK_DP + tristate "DRM DPTX Support for Mediatek SoCs" + depends on DRM_MEDIATEK + select PHY_MTK_DP + select DRM_DP_HELPER + help + DRM/KMS Display Port driver for Mediatek SoCs. + config DRM_MEDIATEK_HDMI tristate "DRM HDMI Support for Mediatek SoCs" depends on DRM_MEDIATEK diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile index 3abd27d7c91d..d4d193f60271 100644 --- a/drivers/gpu/drm/mediatek/Makefile +++ b/drivers/gpu/drm/mediatek/Makefile @@ -25,3 +25,5 @@ mediatek-drm-hdmi-objs := mtk_cec.o \ mtk_hdmi_ddc.o obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o + +obj-$(CONFIG_DRM_MEDIATEK_DP) += mtk_dp.o diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c new file mode 100644 index 000000000000..8eb17ae82bfd --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_dp.c @@ -0,0 +-2,2567 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019 MediaTek Inc. + * Copyright (c) 2022 BayLibre + */ + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_crtc.h> +#include <drm/dp/drm_dp_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_of.h> +#include <drm/drm_panel.h> +#include <drm/drm_print.h> +#include <drm/drm_probe_helper.h> +#include <linux/arm-smccc.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/nvmem-consumer.h> +#include <linux/of.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <sound/hdmi-codec.h> +#include <video/videomode.h> + +#include "mtk_dp_reg.h" + +#define MTK_VDOSYS1_MAX_FRAMERATE 60 +#define MTK_DP_4P1T 4 +#define MTK_DP_HDE 2 +#define MTK_DP_PIX_PER_ADDR 2 +#define MTK_DP_AUX_WAIT_REPLY_COUNT 20 +#define MTK_DP_CHECK_SINK_CAP_TIMEOUT_COUNT 3 + +#define MTK_DP_TBC_BUF_READ_START_ADDR 0x08 + +#define MTK_DP_TRAIN_RETRY_LIMIT 8 +#define MTK_DP_TRAIN_MAX_ITERATIONS 5 + +#define MTK_DP_AUX_WRITE_READ_WAIT_TIME_US 20 + +#define MTK_DP_DP_VERSION_11 0x11 + +enum mtk_dp_state { + MTK_DP_STATE_INITIAL, + MTK_DP_STATE_IDLE, + MTK_DP_STATE_PREPARE, + MTK_DP_STATE_NORMAL, +}; + +enum mtk_dp_train_state { + MTK_DP_TRAIN_STATE_STARTUP = 0, + MTK_DP_TRAIN_STATE_CHECKCAP, + MTK_DP_TRAIN_STATE_CHECKEDID, + MTK_DP_TRAIN_STATE_TRAINING_PRE, + MTK_DP_TRAIN_STATE_TRAINING, + MTK_DP_TRAIN_STATE_NORMAL, + MTK_DP_TRAIN_STATE_DPIDLE, +}; + +struct mtk_dp_timings { + struct videomode vm; + + u8 frame_rate; + u32 pix_rate_khz; +}; + +struct mtk_dp_train_info { + bool tps3; + bool tps4; + bool sink_ssc; + bool cable_plugged_in; + bool cable_state_change; + bool cr_done; + bool eq_done; + + /* link_rate is in multiple of 0.27Gbps */ + int link_rate; + int lane_count; + + u8 irq_status; + int check_cap_count; +}; + +/* Multiple of 0.27Gbps */ +enum mtk_dp_linkrate { + MTK_DP_LINKRATE_RBR = 0x6, + MTK_DP_LINKRATE_HBR = 0xA, + MTK_DP_LINKRATE_HBR2 = 0x14, + MTK_DP_LINKRATE_HBR25 = 0x19, + MTK_DP_LINKRATE_HBR3 = 0x1E, +}; + +//TODO: redundant with DP_MSA_MISC_*_BPC ? +/* Same values as used for DP Spec MISC0 bits 5,6,7 */ +enum mtk_dp_color_depth { + MTK_DP_COLOR_DEPTH_6BIT = 0, + MTK_DP_COLOR_DEPTH_8BIT = 1, + MTK_DP_COLOR_DEPTH_10BIT = 2, + MTK_DP_COLOR_DEPTH_12BIT = 3, + MTK_DP_COLOR_DEPTH_16BIT = 4, + MTK_DP_COLOR_DEPTH_UNKNOWN = 5, +}; + +struct mtk_dp_info { + enum mtk_dp_color_depth depth; + enum dp_pixelformat format; + struct mtk_dp_timings timings; +}; + +struct dp_cal_data { + unsigned int glb_bias_trim; + unsigned int clktx_impse; + + unsigned int *ln_tx_impsel_pmos; + unsigned int *ln_tx_impsel_nmos; +}; + +struct mtk_dp { + struct device *dev; + struct platform_device *phy_dev; + struct phy *phy; + struct dp_cal_data cal_data; + u8 max_lanes; + u8 max_linkrate; + + struct drm_device *drm_dev; + struct drm_bridge bridge; + struct drm_bridge *next_bridge; + struct drm_dp_aux aux; + + u8 rx_cap[DP_RECEIVER_CAP_SIZE]; + + struct mtk_dp_info info; + enum mtk_dp_state state; + + struct mtk_dp_train_info train_info; + enum mtk_dp_train_state train_state; + unsigned int input_fmt; + + struct regmap *regs; + struct clk *dp_tx_clk; + + bool enabled; + + bool has_fec; + /* Protects the mtk_dp struct */ + struct mutex dp_lock; + + struct drm_connector *conn; +}; + +static struct regmap_config mtk_dp_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .max_register = SEC_OFFSET + 0x90, + .name = "mtk-dp-registers", +}; + +static struct mtk_dp *mtk_dp_from_bridge(struct drm_bridge *b) +{ + return container_of(b, struct mtk_dp, bridge); +} + +static u32 mtk_dp_read(struct mtk_dp *mtk_dp, u32 offset) +{ + u32 read_val; + int ret; + + ret = regmap_read(mtk_dp->regs, offset, &read_val); + if (ret) { + dev_err(mtk_dp->dev, "Failed to read register 0x%x: %d\n", + offset, ret); + return 0; + } + + return read_val; +} + +static int mtk_dp_write(struct mtk_dp *mtk_dp, u32 offset, u32 val) +{ + int ret; + + ret = regmap_write(mtk_dp->regs, offset, val); + if (ret) + dev_err(mtk_dp->dev, + "Failed to write register 0x%x with value 0x%x: %d\n", + offset, val, ret); + return ret; +} + +static int mtk_dp_update_bits(struct mtk_dp *mtk_dp, u32 offset, u32 val, + u32 mask) +{ + int ret; + + ret = regmap_update_bits(mtk_dp->regs, offset, mask, val); + if (ret) + dev_err(mtk_dp->dev, + "Failed to update register 0x%x with value 0x%x, mask 0x%x: %d\n", + offset, val, mask, ret); + return ret; +} + +static int mtk_dp_bulk_16bit_write(struct mtk_dp *mtk_dp, u32 offset, u8 *buf, + size_t length) +{ + int i; + int ret = 0; + int num_regs = (length + 1) / 2; + + /* 2 bytes per register */ + for (i = 0; i < num_regs; i++) { + u32 val = buf[i * 2] | + (i * 2 + 1 < length ? buf[i * 2 + 1] << 8 : 0); + + ret = mtk_dp_write(mtk_dp, offset + i * 4, val); + if (ret) + return ret; + } + + return ret; +} + +static unsigned long mtk_dp_sip_atf_call(unsigned int cmd, unsigned int para) +{ + struct arm_smccc_res res; + + arm_smccc_smc(MTK_DP_SIP_CONTROL_AARCH32, cmd, para, 0, 0, 0, 0, 0, + &res); + + pr_debug("[DPTX]%s cmd 0x%x, p1 0x%x, ret 0x%lx-0x%lx", __func__, cmd, + para, res.a0, res.a1); + return res.a1; +} + +static int mtk_dp_msa_bypass_disable(struct mtk_dp *mtk_dp) +{ + const u16 bits_to_set = + BIT(HTOTAL_SEL_DP_ENC0_P0_SHIFT) | + BIT(VTOTAL_SEL_DP_ENC0_P0_SHIFT) | + BIT(HSTART_SEL_DP_ENC0_P0_SHIFT) | + BIT(VSTART_SEL_DP_ENC0_P0_SHIFT) | + BIT(HWIDTH_SEL_DP_ENC0_P0_SHIFT) | + BIT(VHEIGHT_SEL_DP_ENC0_P0_SHIFT) | + BIT(HSP_SEL_DP_ENC0_P0_SHIFT) | BIT(HSW_SEL_DP_ENC0_P0_SHIFT) | + BIT(VSP_SEL_DP_ENC0_P0_SHIFT) | BIT(VSW_SEL_DP_ENC0_P0_SHIFT); + return mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3030, bits_to_set, + bits_to_set); +} + +static int mtk_dp_set_msa(struct mtk_dp *mtk_dp) +{ + int ret; + struct drm_display_mode mode; + struct mtk_dp_timings *timings = &mtk_dp->info.timings; + + drm_display_mode_from_videomode(&timings->vm, &mode); + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3010, mode.htotal, + HTOTAL_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3018, + timings->vm.hsync_len + timings->vm.hback_porch, + HSTART_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028, + timings->vm.hsync_len << HSW_SW_DP_ENC0_P0_SHIFT, + HSW_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028, 0, + HSP_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3020, timings->vm.hactive, + HWIDTH_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3014, mode.vtotal, + VTOTAL_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_301C, + timings->vm.vsync_len + timings->vm.vback_porch, + VSTART_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C, + timings->vm.vsync_len << VSW_SW_DP_ENC0_P0_SHIFT, + VSW_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C, 0, + VSP_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3024, timings->vm.vactive, + VHEIGHT_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3064, timings->vm.hactive, + HDE_NUM_LAST_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3154, mode.htotal, + PGEN_HTOTAL_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3158, + timings->vm.hfront_porch, + PGEN_HSYNC_RISING_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_315C, timings->vm.hsync_len, + PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3160, + timings->vm.hback_porch + timings->vm.hsync_len, + PGEN_HFDE_START_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3164, timings->vm.hactive, + PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3168, mode.vtotal, + PGEN_VTOTAL_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_316C, + timings->vm.vfront_porch, + PGEN_VSYNC_RISING_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3170, timings->vm.vsync_len, + PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3174, + timings->vm.vback_porch + timings->vm.vsync_len, + PGEN_VFDE_START_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3178, timings->vm.vactive, + PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK); + + return ret; +} + +static int mtk_dp_set_color_format(struct mtk_dp *mtk_dp, + enum dp_pixelformat color_format) +{ + u32 val; + int ret; + + mtk_dp->info.format = color_format; + + /* Update MISC0 */ + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034, + color_format << DP_TEST_COLOR_FORMAT_SHIFT, + DP_TEST_COLOR_FORMAT_MASK); + + if (ret) + return ret; + + switch (color_format) { + case DP_PIXELFORMAT_YUV422: + val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422; + break; + case DP_PIXELFORMAT_YUV420: + val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420; + break; + case DP_PIXELFORMAT_RGB: + case DP_PIXELFORMAT_YUV444: + val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB; + break; + case DP_PIXELFORMAT_Y_ONLY: + case DP_PIXELFORMAT_RAW: + case DP_PIXELFORMAT_RESERVED: + default: + drm_warn(mtk_dp->drm_dev, "Unsupported color format: %d\n", + color_format); + return -EINVAL; + } + + return mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, val, + PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK); +} + +static int mtk_dp_set_color_depth(struct mtk_dp *mtk_dp, + enum mtk_dp_color_depth color_depth) +{ + int ret; + u32 val; + + mtk_dp->info.depth = color_depth; + + /* Update MISC0 */ + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034, + color_depth << DP_TEST_BIT_DEPTH_SHIFT, + DP_TEST_BIT_DEPTH_MASK); + + if (ret) + return ret; + + switch (color_depth) { + case MTK_DP_COLOR_DEPTH_6BIT: + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT; + break; + case MTK_DP_COLOR_DEPTH_8BIT: + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT; + break; + case MTK_DP_COLOR_DEPTH_10BIT: + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT; + break; + case MTK_DP_COLOR_DEPTH_12BIT: + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT; + break; + case MTK_DP_COLOR_DEPTH_16BIT: + val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT; + break; + case MTK_DP_COLOR_DEPTH_UNKNOWN: + drm_warn(mtk_dp->drm_dev, "Unsupported color depth %d\n", + color_depth); + return -EINVAL; + } + + return mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, val, + VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK); +} + +static int mtk_dp_mn_overwrite_disable(struct mtk_dp *mtk_dp) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004, 0, + VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK); +} + +static int mtk_dp_set_sram_read_start(struct mtk_dp *mtk_dp, u32 val) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, + val << SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT, + SRAM_START_READ_THRD_DP_ENC0_P0_MASK); +} + +static int mtk_dp_setup_encoder(struct mtk_dp *mtk_dp) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, + BIT(VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT), + VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3040, + 0x20 << SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT, + SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364, + 0x20 << SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT, + SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3300, + 2 << VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT, + VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364, + 4 << FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT, + FIFO_READ_START_POINT_DP_ENC1_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_write(mtk_dp, MTK_DP_ENC1_P0_3368, + 1 << VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT | + 1 << VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT | + BIT(SDP_DP13_EN_DP_ENC1_P0_SHIFT) | + 1 << BS2BS_MODE_DP_ENC1_P0_SHIFT); + + return ret; +} + +static int mtk_dp_pg_disable(struct mtk_dp *mtk_dp) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3038, 0, + VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31B0, + 4 << PGEN_PATTERN_SEL_SHIFT, PGEN_PATTERN_SEL_MASK); + + return ret; +} + +static bool mtk_dp_plug_state(struct mtk_dp *mtk_dp) +{ + return !!(mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3414) & + HPD_DB_DP_TRANS_P0_MASK); +} + +static void mtk_dp_aux_irq_clear(struct mtk_dp *mtk_dp) +{ + mtk_dp_write(mtk_dp, MTK_DP_AUX_P0_3640, + BIT(AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT) | + BIT(AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT) | + BIT(AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT) | + BIT(AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT) | + BIT(AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) | + BIT(AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) | + BIT(AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT)); + /* Wait for the irq to be cleared */ + usleep_range(MTK_DP_AUX_WRITE_READ_WAIT_TIME_US, + MTK_DP_AUX_WRITE_READ_WAIT_TIME_US * 2); +} + +static int mtk_dp_aux_set_cmd(struct mtk_dp *mtk_dp, u8 cmd, u32 addr) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3644, cmd, + MCU_REQUEST_COMMAND_AUX_TX_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3648, addr, + MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_364C, addr >> 16, + MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK); + + return ret; +} + +static int mtk_dp_aux_cmd_complete(struct mtk_dp *mtk_dp) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650, + BIT(MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT), + MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK | + PHY_FIFO_RST_AUX_TX_P0_MASK | + MCU_REQ_DATA_NUM_AUX_TX_P0_MASK); +} + +static int mtk_dp_aux_request_ready(struct mtk_dp *mtk_dp) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3630, + BIT(AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT), + AUX_TX_REQUEST_READY_AUX_TX_P0_MASK); +} + +static void mtk_dp_aux_fill_write_fifo(struct mtk_dp *mtk_dp, u8 *buf, + size_t length) +{ + mtk_dp_bulk_16bit_write(mtk_dp, MTK_DP_AUX_P0_3708, buf, length); +} + +static int mtk_dp_aux_read_rx_fifo(struct mtk_dp *mtk_dp, u8 *buf, + size_t length, int read_delay) +{ + int ret; + int read_pos; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620, 0, + AUX_RD_MODE_AUX_TX_P0_MASK); + if (ret) + return ret; + + for (read_pos = 0; read_pos < length; read_pos++) { + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620, + BIT(AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT), + AUX_RX_FIFO_READ_PULSE_TX_P0_MASK); + if (ret) + return ret; + + /* Hardware needs time to update the data */ + usleep_range(read_delay, read_delay * 2); + buf[read_pos] = + (u8)(mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3620) & + AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK >> + AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT); + } + + return ret; +} + +static int mtk_dp_aux_set_length(struct mtk_dp *mtk_dp, size_t length) +{ + int ret; + + if (length > 0) { + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650, + (length - 1) + << MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT, + MCU_REQ_DATA_NUM_AUX_TX_P0_MASK); + if (ret) + return ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C, 0, + AUX_NO_LENGTH_AUX_TX_P0_MASK | + AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK | + AUX_RESERVED_RW_0_AUX_TX_P0_MASK); + } else { + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C, + BIT(AUX_NO_LENGTH_AUX_TX_P0_SHIFT), + AUX_NO_LENGTH_AUX_TX_P0_MASK | + AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK | + AUX_RESERVED_RW_0_AUX_TX_P0_MASK); + } + + return ret; +} + +static int mtk_dp_aux_wait_for_completion(struct mtk_dp *mtk_dp, bool is_read) +{ + int wait_reply = MTK_DP_AUX_WAIT_REPLY_COUNT; + + while (--wait_reply) { + u32 aux_irq_status; + + if (is_read) { + u32 fifo_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3618); + + if (fifo_status & + (AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK | + AUX_RX_FIFO_FULL_AUX_TX_P0_MASK)) { + return 0; + } + } + + aux_irq_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3640); + if (aux_irq_status & AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK) + return 0; + + if (aux_irq_status & AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK) + return -ETIMEDOUT; + + /* Give the hardware a chance to reach completion before retrying */ + usleep_range(100, 500); + } + + return -ETIMEDOUT; +} + +static int mtk_dp_aux_do_transfer(struct mtk_dp *mtk_dp, bool is_read, u8 cmd, + u32 addr, u8 *buf, size_t length) +{ + int ret; + u32 reply_cmd; + + if (is_read && (length > DP_AUX_MAX_PAYLOAD_BYTES || + (cmd == DP_AUX_NATIVE_READ && !length))) + return -EINVAL; + + if (!is_read) { + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704, + BIT(AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT), + AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK); + + if (ret) + return ret; + } + + mtk_dp_aux_cmd_complete(mtk_dp); + mtk_dp_aux_irq_clear(mtk_dp); + + mtk_dp_aux_set_cmd(mtk_dp, cmd, addr); + mtk_dp_aux_set_length(mtk_dp, length); + + if (!is_read) { + if (length) + mtk_dp_aux_fill_write_fifo(mtk_dp, buf, length); + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704, + AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK, + AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK); + + if (ret) + return ret; + } + + mtk_dp_aux_request_ready(mtk_dp); + + ret = mtk_dp_aux_wait_for_completion(mtk_dp, is_read); + + reply_cmd = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3624) & + AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK; + + if (ret || reply_cmd) { + u32 phy_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3628) & + AUX_RX_PHY_STATE_AUX_TX_P0_MASK; + if (phy_status != AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE) { + drm_err(mtk_dp->drm_dev, + "AUX Rx Aux hang, need SW reset\n"); + return -EIO; + } + + mtk_dp_aux_cmd_complete(mtk_dp); + mtk_dp_aux_irq_clear(mtk_dp); + + return -ETIMEDOUT; + } + + if (!length) { + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C, 0, + AUX_NO_LENGTH_AUX_TX_P0_MASK | + AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK | + AUX_RESERVED_RW_0_AUX_TX_P0_MASK); + + if (ret) + return ret; + + } else if (is_read) { + int read_delay; + + if (cmd == (DP_AUX_I2C_READ | DP_AUX_I2C_MOT) || + cmd == DP_AUX_I2C_READ) + read_delay = 500; + else + read_delay = 100; + + mtk_dp_aux_read_rx_fifo(mtk_dp, buf, length, read_delay); + } + + mtk_dp_aux_cmd_complete(mtk_dp); + mtk_dp_aux_irq_clear(mtk_dp); + + return 0; +} + +static bool mtk_dp_set_swing_pre_emphasis(struct mtk_dp *mtk_dp, int lane_num, + int swing_val, int preemphasis) +{ + int ret; + + u32 lane_shift = lane_num * DP_TX1_VOLT_SWING_SHIFT; + + if (lane_num < 0 || lane_num > 3) + return false; + + dev_dbg(mtk_dp->dev, + "link training swing_val= 0x%x, preemphasis = 0x%x\n", + swing_val, preemphasis); + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP, + swing_val << (DP_TX0_VOLT_SWING_SHIFT + lane_shift), + DP_TX0_VOLT_SWING_MASK << lane_shift); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP, + preemphasis << (DP_TX0_PRE_EMPH_SHIFT + lane_shift), + DP_TX0_PRE_EMPH_MASK << lane_shift); + + return !ret; +} + +static int mtk_dp_reset_swing_pre_emphasis(struct mtk_dp *mtk_dp) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP, 0, + DP_TX0_VOLT_SWING_MASK | DP_TX1_VOLT_SWING_MASK | + DP_TX2_VOLT_SWING_MASK | + DP_TX3_VOLT_SWING_MASK | + DP_TX0_PRE_EMPH_MASK | DP_TX1_PRE_EMPH_MASK | + DP_TX2_PRE_EMPH_MASK | DP_TX3_PRE_EMPH_MASK); +} + +static int mtk_dp_fec_enable(struct mtk_dp *mtk_dp, bool enable) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540, + enable ? BIT(FEC_EN_DP_TRANS_P0_SHIFT) : 0, + FEC_EN_DP_TRANS_P0_MASK); +} + +static u32 mtk_dp_swirq_get_clear(struct mtk_dp *mtk_dp) +{ + int ret; + + u32 irq_status = mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_35D0) & + SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK; + + if (irq_status) { + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8, irq_status, + SW_IRQ_CLR_DP_TRANS_P0_MASK); + if (ret) + return ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8, 0, + SW_IRQ_CLR_DP_TRANS_P0_MASK); + if (ret) + return ret; + } + + return irq_status; +} + +static u32 mtk_dp_hwirq_get_clear(struct mtk_dp *mtk_dp) +{ + int ret; + + u8 irq_status = (mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3418) & + IRQ_STATUS_DP_TRANS_P0_MASK) >> + IRQ_STATUS_DP_TRANS_P0_SHIFT; + + if (irq_status) { + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, irq_status, + IRQ_CLR_DP_TRANS_P0_MASK); + if (ret) + return ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, 0, + IRQ_CLR_DP_TRANS_P0_MASK); + if (ret) + return ret; + } + + return irq_status; +} + +static int mtk_dp_hwirq_enable(struct mtk_dp *mtk_dp, bool enable) +{ + u32 val = enable ? 0 : IRQ_MASK_DP_TRANS_P0_DISC_IRQ | + IRQ_MASK_DP_TRANS_P0_CONN_IRQ | + IRQ_MASK_DP_TRANS_P0_INT_IRQ; + + return mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, val, + IRQ_MASK_DP_TRANS_P0_MASK); +} + +static int mtk_dp_initialize_settings(struct mtk_dp *mtk_dp) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_342C, + XTAL_FREQ_DP_TRANS_P0_DEFAULT, + XTAL_FREQ_DP_TRANS_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540, + BIT(FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT), + FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31EC, + BIT(AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT), + AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C, 0, + SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_IRQ_MASK, IRQ_MASK_AUX_TOP_IRQ, + IRQ_MASK_AUX_TOP_IRQ); + + return ret; +} + +static void mtk_dp_initialize_hpd_detect_settings(struct mtk_dp *mtk_dp) +{ + /* Debounce threshold */ + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410, + 8 << HPD_DEB_THD_DP_TRANS_P0_SHIFT, + HPD_DEB_THD_DP_TRANS_P0_MASK); + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410, + (HPD_INT_THD_DP_TRANS_P0_LOWER_500US | + HPD_INT_THD_DP_TRANS_P0_UPPER_1100US) + << HPD_INT_THD_DP_TRANS_P0_SHIFT, + HPD_INT_THD_DP_TRANS_P0_MASK); + + /* Connect threshold 1.5ms + 5 x 0.1ms = 2ms + * Disconnect threshold 1.5ms + 5 x 0.1ms = 2ms */ + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410, + (5 << HPD_DISC_THD_DP_TRANS_P0_SHIFT) | + (5 << HPD_CONN_THD_DP_TRANS_P0_SHIFT), + HPD_DISC_THD_DP_TRANS_P0_MASK | + HPD_CONN_THD_DP_TRANS_P0_MASK); + mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3430, + HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT, + HPD_INT_THD_ECO_DP_TRANS_P0_MASK); +} + +static int mtk_dp_initialize_aux_settings(struct mtk_dp *mtk_dp) +{ + int ret; + + /* modify timeout threshold = 1595 [12 : 8] */ + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_360C, 0x1595, + AUX_TIMEOUT_THR_AUX_TX_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3658, 0, + AUX_TX_OV_EN_AUX_TX_P0_MASK); + if (ret) + return ret; + /* 25 for 26M */ + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3634, + 25 << AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT, + AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK); + if (ret) + return ret; + /* 13 for 26M */ + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3614, + 13 << AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT, + AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_37C8, + BIT(MTK_ATOP_EN_AUX_TX_P0_SHIFT), + MTK_ATOP_EN_AUX_TX_P0_MASK); + + return ret; +} + +static int mtk_dp_initialize_digital_settings(struct mtk_dp *mtk_dp) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C, 0, + VBID_VIDEO_MUTE_DP_ENC0_P0_MASK); + if (ret) + return ret; + mtk_dp_set_color_format(mtk_dp, DP_PIXELFORMAT_RGB); + mtk_dp_set_color_depth(mtk_dp, MTK_DP_COLOR_DEPTH_8BIT); + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3368, + 1 << BS2BS_MODE_DP_ENC1_P0_SHIFT, + BS2BS_MODE_DP_ENC1_P0_MASK); + if (ret) + return ret; + + /* dp tx encoder reset all sw */ + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004, + BIT(DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT), + DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK); + if (ret) + return ret; + /* Wait for sw reset to complete */ + usleep_range(1000, 5000); + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004, 0, + DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK); + + return ret; +} + +static int mtk_dp_digital_sw_reset(struct mtk_dp *mtk_dp) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C, + BIT(DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT), + DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK); + if (ret) + return ret; + /* Wait for sw reset to complete */ + usleep_range(1000, 5000); + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C, 0, + DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK); + + return ret; +} + +static int mtk_dp_set_lanes(struct mtk_dp *mtk_dp, int lanes) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35F0, + lanes == 0 ? 0 : BIT(3), BIT(3) | BIT(2)); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000, lanes, + LANE_NUM_DP_ENC0_P0_MASK); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_34A4, + lanes << LANE_NUM_DP_TRANS_P0_SHIFT, + LANE_NUM_DP_TRANS_P0_MASK); + + return ret; +} + +static int link_rate_to_mb_per_s(struct mtk_dp *mtk_dp, + enum mtk_dp_linkrate linkrate) +{ + switch (linkrate) { + case MTK_DP_LINKRATE_RBR: + return 1620; + case MTK_DP_LINKRATE_HBR: + return 2700; + case MTK_DP_LINKRATE_HBR2: + return 5400; + case MTK_DP_LINKRATE_HBR3: + return 8100; + default: + drm_err(mtk_dp->drm_dev, + "Implementation error, unknown linkrate %d\n", + linkrate); + return -EINVAL; + } +} + +static u32 check_cal_data_valid(struct mtk_dp *mtk_dp, u32 min, u32 max, u32 val, u32 default_val) +{ + if (val < min || val > max) + dev_warn(mtk_dp->dev, "Invalid calibration data: %d (< %d || > %d), returning default %d\n", + val, min, max, default_val); + return default_val; + + return val; +} + +static int mtk_dp_get_calibration_data(struct mtk_dp *mtk_dp) +{ + struct dp_cal_data *cal_data = &mtk_dp->cal_data; + struct device *dev = mtk_dp->dev; + struct nvmem_cell *cell; + u32 *buf; + size_t len; + + cell = nvmem_cell_get(dev, "dp_calibration_data"); + if (IS_ERR(cell)) { + dev_err(dev, + "Error: Failed to get nvmem cell dp_calibration_data\n"); + return PTR_ERR(cell); + } + + buf = (u32 *)nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + + if (IS_ERR(buf) || ((len / sizeof(u32)) != 4)) { + dev_err(dev, + "Error: Failed to read nvmem_cell_read fail len %ld\n", + (len / sizeof(u32))); + return PTR_ERR(buf); + } + + cal_data->ln_tx_impsel_nmos = devm_kmalloc(mtk_dp->dev, + mtk_dp->max_lanes * sizeof(unsigned int), GFP_KERNEL); + if (!cal_data->ln_tx_impsel_nmos) + return -ENOMEM; + + cal_data->ln_tx_impsel_pmos = devm_kmalloc(mtk_dp->dev, + mtk_dp->max_lanes * sizeof(unsigned int), GFP_KERNEL); + if (!cal_data->ln_tx_impsel_pmos) + return -ENOMEM; + + cal_data->glb_bias_trim = + check_cal_data_valid(mtk_dp, 1, 0x1e, (buf[3] >> 27) & 0x1f, 0xf); + cal_data->clktx_impse = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[0] >> 9) & 0xf, 0x8); + cal_data->ln_tx_impsel_pmos[0] = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[2] >> 28) & 0xf, 0x8); + cal_data->ln_tx_impsel_nmos[0] = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[2] >> 24) & 0xf, 0x8); + cal_data->ln_tx_impsel_pmos[1] = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[2] >> 20) & 0xf, 0x8); + cal_data->ln_tx_impsel_nmos[1] = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[2] >> 16) & 0xf, 0x8); + cal_data->ln_tx_impsel_pmos[2] = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[2] >> 12) & 0xf, 0x8); + cal_data->ln_tx_impsel_nmos[2] = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[2] >> 8) & 0xf, 0x8); + cal_data->ln_tx_impsel_pmos[3] = + check_cal_data_valid(mtk_dp, 1, 0xe, (buf[2] >> 4) & 0xf, 0x8); + cal_data->ln_tx_impsel_nmos[3] = + check_cal_data_valid(mtk_dp, 1, 0xe, buf[2] & 0xf, 0x8); + + kfree(buf); + + return 0; +} + +static int mtk_dp_set_cal_data(struct mtk_dp *mtk_dp) +{ + int ret; + struct dp_cal_data *cal_data = &mtk_dp->cal_data; + + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_DPAUX_TX, + cal_data->clktx_impse << 20, RG_CKM_PT0_CKTX_IMPSEL); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_GLB_BIAS_GEN_00, + cal_data->glb_bias_trim << 16, + RG_XTP_GLB_BIAS_INTR_CTRL); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0, + cal_data->ln_tx_impsel_pmos[0] << 12, + RG_XTP_LN0_TX_IMPSEL_PMOS); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_0, + cal_data->ln_tx_impsel_nmos[0] << 16, + RG_XTP_LN0_TX_IMPSEL_NMOS); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1, + cal_data->ln_tx_impsel_pmos[1] << 12, + RG_XTP_LN1_TX_IMPSEL_PMOS); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_1, + cal_data->ln_tx_impsel_nmos[1] << 16, + RG_XTP_LN1_TX_IMPSEL_NMOS); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2, + cal_data->ln_tx_impsel_pmos[2] << 12, + RG_XTP_LN2_TX_IMPSEL_PMOS); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_2, + cal_data->ln_tx_impsel_nmos[2] << 16, + RG_XTP_LN2_TX_IMPSEL_NMOS); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3, + cal_data->ln_tx_impsel_pmos[3] << 12, + RG_XTP_LN3_TX_IMPSEL_PMOS); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, DP_PHY_LANE_TX_3, + cal_data->ln_tx_impsel_nmos[3] << 16, + RG_XTP_LN3_TX_IMPSEL_NMOS); + + return ret; +} + +static int mtk_dp_phy_configure(struct mtk_dp *mtk_dp, + enum mtk_dp_linkrate link_rate, int lane_count) +{ + int ret; + union phy_configure_opts phy_opts = { + .dp = { + .link_rate = link_rate_to_mb_per_s(mtk_dp, link_rate), + .set_rate = 1, + .lanes = lane_count, + .set_lanes = 1, + .ssc = mtk_dp->train_info.sink_ssc, + } + }; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, DP_PWR_STATE_BANDGAP, + DP_PWR_STATE_MASK); + if (ret) + return ret; + + ret = phy_configure(mtk_dp->phy, &phy_opts); + + if (ret) + return ret; + + mtk_dp_set_cal_data(mtk_dp); + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, + DP_PWR_STATE_BANDGAP_TPLL_LANE, DP_PWR_STATE_MASK); + + return ret; +} + +static int mtk_dp_set_idle_pattern(struct mtk_dp *mtk_dp, bool enable) +{ + const u32 val = POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK | + POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK | + POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK | + POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK; + return mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3580, enable ? val : 0, val); +} + +static int mtk_dp_train_set_pattern(struct mtk_dp *mtk_dp, int pattern) +{ + int ret; + + if (pattern < 0 || pattern > 4) { + drm_err(mtk_dp->drm_dev, + "Implementation error, no such pattern %d\n", pattern); + return -EINVAL; + } + + if (pattern == 1) { /* TPS1 */ + ret = mtk_dp_set_idle_pattern(mtk_dp, false); + if (ret) + return ret; + } + + return mtk_dp_update_bits(mtk_dp, + MTK_DP_TRANS_P0_3400, + pattern ? BIT(pattern - 1) << PATTERN1_EN_DP_TRANS_P0_SHIFT : 0, + PATTERN1_EN_DP_TRANS_P0_MASK | PATTERN2_EN_DP_TRANS_P0_MASK | + PATTERN3_EN_DP_TRANS_P0_MASK | + PATTERN4_EN_DP_TRANS_P0_MASK); +} + +static int mtk_dp_set_enhanced_frame_mode(struct mtk_dp *mtk_dp, bool enable) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000, + enable ? BIT(ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT) : 0, + ENHANCED_FRAME_EN_DP_ENC0_P0_MASK); +} + +static int mtk_dp_training_set_scramble(struct mtk_dp *mtk_dp, bool enable) +{ + return mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3404, + enable ? DP_SCR_EN_DP_TRANS_P0_MASK : 0, + DP_SCR_EN_DP_TRANS_P0_MASK); +} + +static void mtk_dp_video_mute(struct mtk_dp *mtk_dp, bool enable) +{ + u32 val = BIT(VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT); + + if (enable) + val |= BIT(VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT); + mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000, val, + VIDEO_MUTE_SEL_DP_ENC0_P0_MASK | + VIDEO_MUTE_SW_DP_ENC0_P0_MASK); + + mtk_dp_sip_atf_call(MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE, enable); +} + +static int mtk_dp_power_enable(struct mtk_dp *mtk_dp) +{ + int ret; + + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE, 0, + SW_RST_B_PHYD); + if (ret) + return ret; + /* Wait for power enable */ + usleep_range(10, 200); + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE, SW_RST_B_PHYD, + SW_RST_B_PHYD); + if (ret) + return ret; + ret = mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, + DP_PWR_STATE_BANDGAP_TPLL, + DP_PWR_STATE_MASK); + + return ret; +} + +static int mtk_dp_power_disable(struct mtk_dp *mtk_dp) +{ + int ret; + + ret = mtk_dp_write(mtk_dp, MTK_DP_TOP_PWR_STATE, 0); + + if (ret) + return ret; + + ret = mtk_dp_write(mtk_dp, MTK_DP_0034, + DA_CKM_CKTX0_EN_FORCE_EN | DA_CKM_BIAS_LPF_EN_FORCE_VAL | + DA_CKM_BIAS_EN_FORCE_VAL | + DA_XTP_GLB_LDO_EN_FORCE_VAL | + DA_XTP_GLB_AVD10_ON_FORCE_VAL); + + if (ret) + return ret; + + /* Disable RX */ + ret = mtk_dp_write(mtk_dp, MTK_DP_1040, 0); + + if (ret) + return ret; + + ret = mtk_dp_write(mtk_dp, MTK_DP_TOP_MEM_PD, + 0x550 | BIT(FUSE_SEL_SHIFT) | BIT(MEM_ISO_EN_SHIFT)); + + return ret; +} + +static void mtk_dp_initialize_priv_data(struct mtk_dp *mtk_dp) +{ + mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR2; + mtk_dp->train_info.lane_count = mtk_dp->max_lanes; + mtk_dp->train_info.irq_status = 0; + mtk_dp->train_info.cable_plugged_in = false; + mtk_dp->train_info.cable_state_change = false; + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP; + mtk_dp->state = MTK_DP_STATE_INITIAL; + + mtk_dp->info.format = DP_PIXELFORMAT_RGB; + mtk_dp->info.depth = MTK_DP_COLOR_DEPTH_8BIT; + memset(&mtk_dp->info.timings, 0, sizeof(struct mtk_dp_timings)); + mtk_dp->info.timings.frame_rate = 60; + + mtk_dp->has_fec = false; +} + +static void mtk_dp_setup_tu(struct mtk_dp *mtk_dp) +{ + u32 sram_read_start = MTK_DP_TBC_BUF_READ_START_ADDR; + + if (mtk_dp->train_info.lane_count > 0) { + sram_read_start = min_t(u32, + MTK_DP_TBC_BUF_READ_START_ADDR, + mtk_dp->info.timings.vm.hactive / + mtk_dp->train_info.lane_count / + MTK_DP_4P1T / MTK_DP_HDE / MTK_DP_PIX_PER_ADDR); + mtk_dp_set_sram_read_start(mtk_dp, sram_read_start); + } + + mtk_dp_setup_encoder(mtk_dp); +} + +static void mtk_dp_calculate_pixrate(struct mtk_dp *mtk_dp) +{ + u8 target_frame_rate = 60; + u32 target_pixel_clk; + struct drm_display_mode mode; + struct mtk_dp_timings *timings = &mtk_dp->info.timings; + + drm_display_mode_from_videomode(&timings->vm, &mode); + + if (mtk_dp->info.timings.frame_rate > 0) { + target_frame_rate = mtk_dp->info.timings.frame_rate; + target_pixel_clk = mode.htotal * + mode.vtotal * + target_frame_rate; + } else if (mtk_dp->info.timings.pix_rate_khz > 0) { + target_pixel_clk = mtk_dp->info.timings.pix_rate_khz * 1000; + } else { + target_pixel_clk = mode.htotal * + mode.vtotal * + target_frame_rate; + } + + mtk_dp->info.timings.pix_rate_khz = target_pixel_clk / 1000; +} + +static void mtk_dp_set_tx_out(struct mtk_dp *mtk_dp) +{ + mtk_dp_msa_bypass_disable(mtk_dp); + mtk_dp_calculate_pixrate(mtk_dp); + mtk_dp_pg_disable(mtk_dp); + mtk_dp_setup_tu(mtk_dp); +} + +static int mtk_dp_hpd_sink_event(struct mtk_dp *mtk_dp) +{ + ssize_t ret; + u8 sink_count; + bool locked; + u8 link_status[DP_LINK_STATUS_SIZE] = {}; + u32 sink_count_reg = DP_SINK_COUNT_ESI; + u32 link_status_reg = DP_LANE0_1_STATUS; + + ret = drm_dp_dpcd_readb(&mtk_dp->aux, sink_count_reg, &sink_count); + if (ret < 0) { + drm_err(mtk_dp->drm_dev, "Read sink count failed: %ld\n", ret); + return ret; + } + + ret = drm_dp_dpcd_read(&mtk_dp->aux, link_status_reg, link_status, + sizeof(link_status)); + if (!ret) { + drm_err(mtk_dp->drm_dev, "Read link status failed: %ld\n", + ret); + return ret; + } + + locked = drm_dp_channel_eq_ok(link_status, + mtk_dp->train_info.lane_count); + if (!locked && mtk_dp->train_state > MTK_DP_TRAIN_STATE_TRAINING_PRE) + mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING_PRE; + + if (link_status[1] & DP_REMOTE_CONTROL_COMMAND_PENDING) + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DEVICE_SERVICE_IRQ_VECTOR, + DP_REMOTE_CONTROL_COMMAND_PENDING); + + if (DP_GET_SINK_COUNT(sink_count) && + (link_status[2] & DP_DOWNSTREAM_PORT_STATUS_CHANGED)) { + mtk_dp->train_info.check_cap_count = 0; + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKEDID; + msleep(20); + } + + return 0; +} + +static void mtk_dp_train_update_swing_pre(struct mtk_dp *mtk_dp, int lanes, + u8 dpcd_adjust_req[2]) +{ + int lane; + + for (lane = 0; lane < lanes; ++lane) { + u8 val; + u8 swing; + u8 preemphasis; + int index = lane / 2; + int shift = lane % 2 ? DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : 0; + + swing = (dpcd_adjust_req[index] >> shift) & + DP_ADJUST_VOLTAGE_SWING_LANE0_MASK; + preemphasis = ((dpcd_adjust_req[index] >> shift) & + DP_ADJUST_PRE_EMPHASIS_LANE0_MASK) >> + DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT; + val = swing << DP_TRAIN_VOLTAGE_SWING_SHIFT | + preemphasis << DP_TRAIN_PRE_EMPHASIS_SHIFT; + + if (swing == DP_TRAIN_VOLTAGE_SWING_LEVEL_3) + val |= DP_TRAIN_MAX_SWING_REACHED; + if (preemphasis == 3) + val |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; + + mtk_dp_set_swing_pre_emphasis(mtk_dp, lane, swing, preemphasis); + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_LANE0_SET + lane, + val); + } +} + +static void mtk_dp_read_link_status(struct mtk_dp *mtk_dp, + u8 link_status[DP_LINK_STATUS_SIZE]) +{ + drm_dp_dpcd_read(&mtk_dp->aux, DP_LANE0_1_STATUS, link_status, + DP_LINK_STATUS_SIZE); +} + +static int mtk_dp_train_tps_1(struct mtk_dp *mtk_dp, + u8 target_lane_count, int *iteration_count, u8 *lane_adjust, int *status_control, u8 *prev_lane_adjust) +{ + int ret; + u8 val; + u8 link_status[DP_LINK_STATUS_SIZE] = {}; + + ret = mtk_dp_training_set_scramble(mtk_dp, false); + if (ret) + return ret; + + if (*status_control == 0) { + ret = mtk_dp_train_set_pattern(mtk_dp, 1); + if (ret) + return ret; + + val = DP_LINK_SCRAMBLING_DISABLE | + DP_TRAINING_PATTERN_1; + drm_dp_dpcd_writeb(&mtk_dp->aux, + DP_TRAINING_PATTERN_SET, + DP_LINK_SCRAMBLING_DISABLE | + DP_TRAINING_PATTERN_1); + drm_dp_dpcd_read(&mtk_dp->aux, + DP_ADJUST_REQUEST_LANE0_1, + lane_adjust, + sizeof(*lane_adjust) * 2); + + mtk_dp_train_update_swing_pre(mtk_dp, + target_lane_count, lane_adjust); + *status_control = 1; + (*iteration_count)++; + } + + drm_dp_link_train_clock_recovery_delay(&mtk_dp->aux, + mtk_dp->rx_cap); + mtk_dp_read_link_status(mtk_dp, link_status); + + if (drm_dp_clock_recovery_ok(link_status, + target_lane_count)) { + mtk_dp->train_info.cr_done = true; + *iteration_count = 1; + dev_dbg(mtk_dp->dev, "Link train CR pass\n"); + return 0; + } else if (*prev_lane_adjust == link_status[4]) { + (*iteration_count)++; + if (*prev_lane_adjust & DP_ADJUST_VOLTAGE_SWING_LANE0_MASK) { + dev_dbg(mtk_dp->dev, "Link train CQ fail\n"); + return -EINVAL; + } + } else { + *prev_lane_adjust = link_status[4]; + } + return -EAGAIN; +} + +static int mtk_dp_train_tps_2_3(struct mtk_dp *mtk_dp, u8 target_linkrate, + u8 target_lane_count, int *iteration_count, u8 *lane_adjust, int *status_control, u8 *prev_lane_adjust) +{ + int ret; + u8 val; + u8 link_status[DP_LINK_STATUS_SIZE] = {}; + + if (*status_control == 1) { + if (mtk_dp->train_info.tps4) { + ret = mtk_dp_train_set_pattern(mtk_dp, 4); + if (ret) + return -EINVAL; + + val = DP_TRAINING_PATTERN_4; + } else if (mtk_dp->train_info.tps3) { + ret = mtk_dp_train_set_pattern(mtk_dp, 3); + if (ret) + return -EINVAL; + + val = DP_LINK_SCRAMBLING_DISABLE | + DP_TRAINING_PATTERN_3; + } else { + ret = mtk_dp_train_set_pattern(mtk_dp, 2); + if (ret) + return -EINVAL; + + val = DP_LINK_SCRAMBLING_DISABLE | + DP_TRAINING_PATTERN_2; + } + drm_dp_dpcd_writeb(&mtk_dp->aux, + DP_TRAINING_PATTERN_SET, + val); + + drm_dp_dpcd_read(&mtk_dp->aux, + DP_ADJUST_REQUEST_LANE0_1, + lane_adjust, + sizeof(*lane_adjust) * 2); + + mtk_dp_train_update_swing_pre(mtk_dp, + target_lane_count, lane_adjust); + *status_control = 2; + (*iteration_count)++; + } + + drm_dp_link_train_channel_eq_delay(&mtk_dp->aux, + mtk_dp->rx_cap); + + mtk_dp_read_link_status(mtk_dp, link_status); + + if (!drm_dp_clock_recovery_ok(link_status, + target_lane_count)) { + mtk_dp->train_info.cr_done = false; + mtk_dp->train_info.eq_done = false; + dev_dbg(mtk_dp->dev, "Link train EQ fail\n"); + return -EINVAL; + } + + if (drm_dp_channel_eq_ok(link_status, + target_lane_count)) { + mtk_dp->train_info.eq_done = true; + dev_dbg(mtk_dp->dev, "Link train EQ pass\n"); + return 0; + } + + if (*prev_lane_adjust == link_status[4]) + (*iteration_count)++; + else + *prev_lane_adjust = link_status[4]; + + return -EAGAIN; +} + +static int mtk_dp_train_flow(struct mtk_dp *mtk_dp, u8 target_link_rate, + u8 target_lane_count) +{ + u8 lane_adjust[2] = {}; + bool pass_tps1 = false; + bool pass_tps2_3 = false; + int train_retries; + int status_control; + int iteration_count; + int ret; + u8 prev_lane_adjust; + + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LINK_BW_SET, target_link_rate); + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET, + target_lane_count | DP_LANE_COUNT_ENHANCED_FRAME_EN); + + if (mtk_dp->train_info.sink_ssc) + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DOWNSPREAD_CTRL, + DP_SPREAD_AMP_0_5); + + train_retries = 0; + status_control = 0; + iteration_count = 1; + prev_lane_adjust = 0xFF; + + mtk_dp_set_lanes(mtk_dp, target_lane_count / 2); + ret = mtk_dp_phy_configure(mtk_dp, target_link_rate, target_lane_count); + if (ret) + return -EINVAL; + + dev_dbg(mtk_dp->dev, + "Link train target_link_rate = 0x%x, target_lane_count = 0x%x\n", + target_link_rate, target_lane_count); + + do { + train_retries++; + if (!mtk_dp->train_info.cable_plugged_in || + ((mtk_dp->train_info.irq_status & MTK_DP_HPD_DISCONNECT) != + 0x0)) { + return -ENODEV; + } + + if (mtk_dp->train_state < MTK_DP_TRAIN_STATE_TRAINING) + return -EAGAIN; + + if (!pass_tps1) { + ret = mtk_dp_train_tps_1(mtk_dp, target_lane_count, &iteration_count, lane_adjust, &status_control, &prev_lane_adjust); + if (!ret) { + pass_tps1 = true; + train_retries = 0; + } else if (ret == -EINVAL) { + break; + } + } else { + ret = mtk_dp_train_tps_2_3(mtk_dp, target_link_rate, target_lane_count, &iteration_count, lane_adjust, &status_control, &prev_lane_adjust); + if (!ret) { + pass_tps2_3 = true; + break; + } else if (ret == -EINVAL) { + break; + } + } + + drm_dp_dpcd_read(&mtk_dp->aux, DP_ADJUST_REQUEST_LANE0_1, + lane_adjust, sizeof(lane_adjust)); + mtk_dp_train_update_swing_pre(mtk_dp, target_lane_count, + lane_adjust); + } while (train_retries < MTK_DP_TRAIN_RETRY_LIMIT && + iteration_count < MTK_DP_TRAIN_MAX_ITERATIONS); + + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET, + DP_TRAINING_PATTERN_DISABLE); + ret = mtk_dp_train_set_pattern(mtk_dp, 0); + if (ret) + return -EINVAL; + + if (!pass_tps2_3) + return -ETIMEDOUT; + + mtk_dp->train_info.link_rate = target_link_rate; + mtk_dp->train_info.lane_count = target_lane_count; + + ret = mtk_dp_training_set_scramble(mtk_dp, true); + if (ret) + return ret; + + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET, + target_lane_count | + DP_LANE_COUNT_ENHANCED_FRAME_EN); + ret = mtk_dp_set_enhanced_frame_mode(mtk_dp, true); + + return ret; +} + +static bool mtk_dp_parse_capabilities(struct mtk_dp *mtk_dp) +{ + u8 buf[DP_RECEIVER_CAP_SIZE] = {}; + u8 val; + struct mtk_dp_train_info *train_info = &mtk_dp->train_info; + + if (!mtk_dp_plug_state(mtk_dp)) + return false; + + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0); + /* Wait for power on */ + usleep_range(2000, 5000); + + drm_dp_read_dpcd_caps(&mtk_dp->aux, buf); + + memcpy(mtk_dp->rx_cap, buf, min(sizeof(mtk_dp->rx_cap), sizeof(buf))); + mtk_dp->rx_cap[DP_TRAINING_AUX_RD_INTERVAL] &= DP_TRAINING_AUX_RD_MASK; + + train_info->link_rate = + min_t(int, mtk_dp->max_linkrate, buf[mtk_dp->max_linkrate]); + train_info->lane_count = + min_t(int, mtk_dp->max_lanes, drm_dp_max_lane_count(buf)); + + train_info->tps3 = drm_dp_tps3_supported(buf); + train_info->tps4 = drm_dp_tps4_supported(buf); + + train_info->sink_ssc = + !!(buf[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5); + + train_info->sink_ssc = false; + + drm_dp_dpcd_readb(&mtk_dp->aux, DP_MSTM_CAP, &val); + if (val & DP_MST_CAP) { + /* Clear DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0 */ + drm_dp_dpcd_readb(&mtk_dp->aux, + DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0, &val); + if (val) + drm_dp_dpcd_writeb(&mtk_dp->aux, + DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0, + val); + } + + return true; +} + +static void mtk_dp_train_change_mode(struct mtk_dp *mtk_dp) +{ + phy_reset(mtk_dp->phy); + mtk_dp_reset_swing_pre_emphasis(mtk_dp); +} + +static int mtk_dp_train_start(struct mtk_dp *mtk_dp) +{ + int ret = 0; + u8 lane_count; + u8 link_rate; + u8 train_limit; + u8 max_link_rate; + u8 plug_wait; + + for (plug_wait = 7; !mtk_dp_plug_state(mtk_dp) && plug_wait > 0; + --plug_wait) + /* Avoid short pulses on the HPD isr */ + usleep_range(1000, 5000); + if (plug_wait == 0) { + mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE; + return -ENODEV; + } + + link_rate = mtk_dp->rx_cap[1]; + lane_count = mtk_dp->rx_cap[2] & 0x1F; + + mtk_dp->train_info.link_rate = min(mtk_dp->max_linkrate, link_rate); + mtk_dp->train_info.lane_count = min(mtk_dp->max_lanes, lane_count); + link_rate = mtk_dp->train_info.link_rate; + lane_count = mtk_dp->train_info.lane_count; + + switch (link_rate) { + case MTK_DP_LINKRATE_RBR: + case MTK_DP_LINKRATE_HBR: + case MTK_DP_LINKRATE_HBR2: + case MTK_DP_LINKRATE_HBR25: + case MTK_DP_LINKRATE_HBR3: + break; + default: + mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR3; + break; + }; + + max_link_rate = link_rate; + for (train_limit = 6; train_limit > 0; train_limit--) { + mtk_dp->train_info.cr_done = false; + mtk_dp->train_info.eq_done = false; + + mtk_dp_train_change_mode(mtk_dp); + ret = mtk_dp_train_flow(mtk_dp, link_rate, lane_count); + if (ret) + return ret; + + if (!mtk_dp->train_info.cr_done) { + switch (link_rate) { + case MTK_DP_LINKRATE_RBR: + lane_count = lane_count / 2; + link_rate = max_link_rate; + if (lane_count == 0) { + mtk_dp->train_state = + MTK_DP_TRAIN_STATE_DPIDLE; + return -EIO; + } + break; + case MTK_DP_LINKRATE_HBR: + link_rate = MTK_DP_LINKRATE_RBR; + break; + case MTK_DP_LINKRATE_HBR2: + link_rate = MTK_DP_LINKRATE_HBR; + break; + case MTK_DP_LINKRATE_HBR3: + link_rate = MTK_DP_LINKRATE_HBR2; + break; + default: + return -EINVAL; + }; + } else if (!mtk_dp->train_info.eq_done) { + if (lane_count == 0) + return -EIO; + + lane_count /= 2; + } else { + break; + } + } + + if (train_limit == 0) + return -ETIMEDOUT; + + return 0; +} + +//TODO: check drm_dp_helpers for duplicated code + +static void mtk_dp_video_enable(struct mtk_dp *mtk_dp, bool enable) +{ + if (enable) { + mtk_dp_set_tx_out(mtk_dp); + mtk_dp_video_mute(mtk_dp, false); + } else { + mtk_dp_video_mute(mtk_dp, true); + } +} + +static void mtk_dp_video_config(struct mtk_dp *mtk_dp) +{ + mtk_dp_mn_overwrite_disable(mtk_dp); + + mtk_dp_set_msa(mtk_dp); + + mtk_dp_set_color_depth(mtk_dp, mtk_dp->info.depth); + mtk_dp_set_color_format(mtk_dp, mtk_dp->info.format); +} + +static void mtk_dp_state_handler(struct mtk_dp *mtk_dp) +{ + switch (mtk_dp->state) { + case MTK_DP_STATE_INITIAL: + mtk_dp_video_mute(mtk_dp, true); + mtk_dp->state = MTK_DP_STATE_IDLE; + break; + + case MTK_DP_STATE_IDLE: + if (mtk_dp->train_state == MTK_DP_TRAIN_STATE_NORMAL) + mtk_dp->state = MTK_DP_STATE_PREPARE; + break; + + case MTK_DP_STATE_PREPARE: + mtk_dp_video_config(mtk_dp); + mtk_dp_video_enable(mtk_dp, true); + + mtk_dp->state = MTK_DP_STATE_NORMAL; + break; + + case MTK_DP_STATE_NORMAL: + if (mtk_dp->train_state != MTK_DP_TRAIN_STATE_NORMAL) { + mtk_dp_video_mute(mtk_dp, true); + mtk_dp->state = MTK_DP_STATE_IDLE; + } + break; + + default: + break; + } +} + +static int mtk_dp_train_handler(struct mtk_dp *mtk_dp) +{ + bool training_done = false; + short max_retry = 50; + int ret = 0; + + do { + switch (mtk_dp->train_state) { + case MTK_DP_TRAIN_STATE_STARTUP: + mtk_dp_state_handler(mtk_dp); + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKCAP; + break; + + case MTK_DP_TRAIN_STATE_CHECKCAP: + if (mtk_dp_parse_capabilities(mtk_dp)) { + mtk_dp->train_info.check_cap_count = 0; + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKEDID; + } else { + mtk_dp->train_info.check_cap_count++; + + if (mtk_dp->train_info.check_cap_count > + MTK_DP_CHECK_SINK_CAP_TIMEOUT_COUNT) { + mtk_dp->train_info.check_cap_count = 0; + mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE; + ret = -ETIMEDOUT; + } + } + break; + + case MTK_DP_TRAIN_STATE_CHECKEDID: + mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING_PRE; + break; + + case MTK_DP_TRAIN_STATE_TRAINING_PRE: + mtk_dp_state_handler(mtk_dp); + mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING; + break; + + case MTK_DP_TRAIN_STATE_TRAINING: + ret = mtk_dp_train_start(mtk_dp); + if (ret == 0) { + mtk_dp_video_mute(mtk_dp, true); + mtk_dp->train_state = MTK_DP_TRAIN_STATE_NORMAL; + mtk_dp_fec_enable(mtk_dp, mtk_dp->has_fec); + } else if (ret != -EAGAIN) { + mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE; + } + break; + case MTK_DP_TRAIN_STATE_NORMAL: + mtk_dp_state_handler(mtk_dp); + training_done = true; + break; + case MTK_DP_TRAIN_STATE_DPIDLE: + break; + default: + break; + } + + if (ret) { + if (ret == -EAGAIN) + continue; + /* + * If we get any other error number, it doesn't + * make any sense to keep iterating. + */ + break; + } + } while (!training_done || --max_retry); + + return ret; +} + +static void mtk_dp_init_port(struct mtk_dp *mtk_dp) +{ + mtk_dp_set_idle_pattern(mtk_dp, true); + mtk_dp_initialize_priv_data(mtk_dp); + + mtk_dp_initialize_settings(mtk_dp); + mtk_dp_initialize_aux_settings(mtk_dp); + mtk_dp_initialize_digital_settings(mtk_dp); + mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690, + BIT(RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT), + RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK); + mtk_dp_initialize_hpd_detect_settings(mtk_dp); + + mtk_dp_digital_sw_reset(mtk_dp); +} + +static irqreturn_t mtk_dp_hpd_event_thread(int hpd, void *dev) +{ + struct mtk_dp *mtk_dp = dev; + int event; + u8 buf[DP_RECEIVER_CAP_SIZE] = {}; + + event = mtk_dp_plug_state(mtk_dp) ? connector_status_connected : + connector_status_disconnected; + + if (event < 0) + return IRQ_HANDLED; + + if (mtk_dp->drm_dev) { + dev_info(mtk_dp->dev, "drm_helper_hpd_irq_event\n"); + drm_helper_hpd_irq_event(mtk_dp->bridge.dev); + } + + if (mtk_dp->train_info.cable_state_change) { + mtk_dp->train_info.cable_state_change = false; + + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP; + + if (!mtk_dp->train_info.cable_plugged_in || + !mtk_dp_plug_state(mtk_dp)) { + mtk_dp_video_mute(mtk_dp, true); + + mtk_dp_initialize_priv_data(mtk_dp); + mtk_dp_set_idle_pattern(mtk_dp, true); + if (mtk_dp->has_fec) + mtk_dp_fec_enable(mtk_dp, false); + + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, + DP_PWR_STATE_BANDGAP_TPLL, + DP_PWR_STATE_MASK); + } else { + mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, + DP_PWR_STATE_BANDGAP_TPLL_LANE, + DP_PWR_STATE_MASK); + drm_dp_read_dpcd_caps(&mtk_dp->aux, buf); + mtk_dp->train_info.link_rate = + min_t(int, mtk_dp->max_linkrate, + buf[mtk_dp->max_linkrate]); + mtk_dp->train_info.lane_count = + min_t(int, mtk_dp->max_lanes, + drm_dp_max_lane_count(buf)); + } + } + + if (mtk_dp->train_info.irq_status & MTK_DP_HPD_INTERRUPT) { + dev_dbg(mtk_dp->dev, "MTK_DP_HPD_INTERRUPT\n"); + mtk_dp->train_info.irq_status &= ~MTK_DP_HPD_INTERRUPT; + mtk_dp_hpd_sink_event(mtk_dp); + } + + return IRQ_HANDLED; +} + +static irqreturn_t mtk_dp_hpd_isr_handler(struct mtk_dp *mtk_dp) +{ + bool connected; + u16 swirq_status = mtk_dp_swirq_get_clear(mtk_dp); + u8 hwirq_status = mtk_dp_hwirq_get_clear(mtk_dp); + struct mtk_dp_train_info *train_info = &mtk_dp->train_info; + + train_info->irq_status |= hwirq_status | swirq_status; + + if (!train_info->irq_status) + return IRQ_HANDLED; + + connected = mtk_dp_plug_state(mtk_dp); + if (connected || !train_info->cable_plugged_in) + train_info->irq_status &= ~MTK_DP_HPD_DISCONNECT; + else if (!connected || train_info->cable_plugged_in) + train_info->irq_status &= ~MTK_DP_HPD_CONNECT; + + if (!(train_info->irq_status & + (MTK_DP_HPD_CONNECT | MTK_DP_HPD_DISCONNECT))) + return IRQ_HANDLED; + + if (train_info->irq_status & MTK_DP_HPD_CONNECT) { + train_info->irq_status &= ~MTK_DP_HPD_CONNECT; + train_info->cable_plugged_in = true; + } else { + train_info->irq_status &= ~MTK_DP_HPD_DISCONNECT; + train_info->cable_plugged_in = false; + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP; + } + train_info->cable_state_change = true; + + return IRQ_WAKE_THREAD; +} + +static irqreturn_t mtk_dp_hpd_event(int hpd, void *dev) +{ + struct mtk_dp *mtk_dp = dev; + u32 irq_status; + + irq_status = mtk_dp_read(mtk_dp, MTK_DP_TOP_IRQ_STATUS); + + if (!irq_status) + return IRQ_HANDLED; + + if (irq_status & RGS_IRQ_STATUS_TRANSMITTER) + return mtk_dp_hpd_isr_handler(mtk_dp); + + return IRQ_HANDLED; +} + +static int mtk_dp_dt_parse(struct mtk_dp *mtk_dp, + struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + int ret = 0; + void __iomem *base; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + mtk_dp->regs = devm_regmap_init_mmio(dev, base, &mtk_dp_regmap_config); + if (IS_ERR(mtk_dp->regs)) + return PTR_ERR(mtk_dp->regs); + + mtk_dp->dp_tx_clk = devm_clk_get(dev, "faxi"); + if (IS_ERR(mtk_dp->dp_tx_clk)) { + dev_err(dev, "Failed to get dptx clock: %d\n", ret); + mtk_dp->dp_tx_clk = NULL; + return PTR_ERR(mtk_dp->dp_tx_clk); + } + + ret = device_property_read_u8(dev, "max-lanes", &mtk_dp->max_lanes); + if (ret) + return ret; + + ret = device_property_read_u8(dev, "max-linkrate", &mtk_dp->max_linkrate); + + return ret; +} + +static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + bool enabled = mtk_dp->enabled; + struct edid *new_edid = NULL; + +//TODO: refcount enabled so that we don't have any surprises... + + if (!enabled) + drm_bridge_chain_pre_enable(bridge); + + if (mtk_dp_plug_state(mtk_dp)) + new_edid = drm_get_edid(connector, &mtk_dp->aux.ddc); + + if (!enabled) + drm_bridge_chain_post_disable(bridge); + + return new_edid; +} + +static ssize_t mtk_dp_aux_transfer(struct drm_dp_aux *mtk_aux, + struct drm_dp_aux_msg *msg) +{ + struct mtk_dp *mtk_dp; + bool is_read; + u8 request; + size_t accessed_bytes = 0; + int ret = 0; + + mtk_dp = container_of(mtk_aux, struct mtk_dp, aux); + + if (!mtk_dp->train_info.cable_plugged_in || + mtk_dp->train_info.irq_status & MTK_DP_HPD_DISCONNECT) { + mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKCAP; + return -EAGAIN; + } + + switch (msg->request) { + case DP_AUX_I2C_MOT: + case DP_AUX_I2C_WRITE: + case DP_AUX_NATIVE_WRITE: + case DP_AUX_I2C_WRITE_STATUS_UPDATE: + case DP_AUX_I2C_WRITE_STATUS_UPDATE | DP_AUX_I2C_MOT: + request = msg->request & ~DP_AUX_I2C_WRITE_STATUS_UPDATE; + is_read = false; + break; + case DP_AUX_I2C_READ: + case DP_AUX_NATIVE_READ: + case DP_AUX_I2C_READ | DP_AUX_I2C_MOT: + request = msg->request; + is_read = true; + break; + default: + drm_err(mtk_aux->drm_dev, "invalid aux cmd = %d\n", + msg->request); + return -EINVAL; + } + + if (msg->size == 0) { + ret = mtk_dp_aux_do_transfer(mtk_dp, is_read, request, + msg->address + accessed_bytes, + msg->buffer + accessed_bytes, 0); + } else { + while (accessed_bytes < msg->size) { + size_t to_access = + min_t(size_t, DP_AUX_MAX_PAYLOAD_BYTES, + msg->size - accessed_bytes); + + ret = mtk_dp_aux_do_transfer(mtk_dp, + is_read, request, + msg->address + accessed_bytes, + msg->buffer + accessed_bytes, + to_access); + + if (ret) { + drm_info(mtk_dp->drm_dev, + "Failed to do AUX transfer: %d\n", ret); + break; + } + accessed_bytes += to_access; + } + } + + if (ret) { + msg->reply = DP_AUX_NATIVE_REPLY_NACK | DP_AUX_I2C_REPLY_NACK; + return ret; + } + + msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK; + return msg->size; +} + +static void mtk_dp_poweroff(struct mtk_dp *mtk_dp) +{ + mutex_lock(&mtk_dp->dp_lock); + + mtk_dp_hwirq_enable(mtk_dp, false); + mtk_dp_power_disable(mtk_dp); + phy_exit(mtk_dp->phy); + clk_disable_unprepare(mtk_dp->dp_tx_clk); + + mutex_unlock(&mtk_dp->dp_lock); +} + +static int mtk_dp_poweron(struct mtk_dp *mtk_dp) +{ + int ret = 0; + + mutex_lock(&mtk_dp->dp_lock); + + ret = clk_prepare_enable(mtk_dp->dp_tx_clk); + if (ret < 0) { + dev_err(mtk_dp->dev, "Fail to enable clock: %d\n", ret); + goto err; + } + ret = phy_init(mtk_dp->phy); + if (ret) { + dev_err(mtk_dp->dev, "Failed to initialize phy: %d\n", ret); + goto err_phy_init; + } + ret = mtk_dp_phy_configure(mtk_dp, MTK_DP_LINKRATE_RBR, 1); + if (ret) { + dev_err(mtk_dp->dev, "Failed to configure phy: %d\n", ret); + goto err_phy_config; + } + + mtk_dp_init_port(mtk_dp); + ret = mtk_dp_power_enable(mtk_dp); + mtk_dp_hwirq_enable(mtk_dp, true); + +err_phy_config: + phy_exit(mtk_dp->phy); +err_phy_init: + clk_disable_unprepare(mtk_dp->dp_tx_clk); +err: + mutex_unlock(&mtk_dp->dp_lock); + return ret; +} + +static int mtk_dp_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + int ret; + + ret = mtk_dp_poweron(mtk_dp); + if (ret) + return ret; + + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { + dev_err(mtk_dp->dev, "Driver does not provide a connector!"); + return -EINVAL; + } + + if (mtk_dp->next_bridge) { + ret = drm_bridge_attach(bridge->encoder, mtk_dp->next_bridge, + &mtk_dp->bridge, flags); + if (ret) { + drm_warn(mtk_dp->drm_dev, + "Failed to attach external bridge: %d\n", ret); + return ret; + } + } + + mtk_dp->drm_dev = bridge->dev; + + return 0; +} + +static void mtk_dp_bridge_detach(struct drm_bridge *bridge) +{ + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + + mtk_dp->drm_dev = NULL; +} + +static void mtk_dp_bridge_atomic_disable(struct drm_bridge *bridge, + struct drm_bridge_state *old_state) +{ + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + + mtk_dp_video_mute(mtk_dp, true); + mtk_dp->state = MTK_DP_STATE_IDLE; + mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP; + + mtk_dp->enabled = false; + /* Ensure the sink is muted before powering off */ + msleep(100); + mtk_dp_poweroff(mtk_dp); +} + +static void mtk_dp_parse_drm_mode_timings(struct mtk_dp *mtk_dp, + struct drm_display_mode *mode) +{ + struct mtk_dp_timings *timings = &mtk_dp->info.timings; + + drm_display_mode_to_videomode(mode, &timings->vm); + timings->frame_rate = drm_mode_vrefresh(mode); +} + +static void mtk_dp_bridge_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_state) +{ + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + + mtk_dp->conn = drm_atomic_get_new_connector_for_encoder(old_state->base.state, + bridge->encoder); + if (!mtk_dp->conn) { + drm_err(mtk_dp->drm_dev, + "Can't enable bridge as connector is missing\n"); + return; + } + + /* Training */ + if (mtk_dp_train_handler(mtk_dp)) { + drm_err(mtk_dp->drm_dev, "Training failed\n"); + return; + } + + mtk_dp->enabled = true; +} + +static enum drm_mode_status +mtk_dp_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + u32 rx_linkrate = (u32)mtk_dp->train_info.link_rate * 27000; + u32 bpp = info->color_formats & DRM_COLOR_FORMAT_YCBCR422 ? 16 : 24; + + if (rx_linkrate * mtk_dp->train_info.lane_count < mode->clock * bpp / 8) + return MODE_CLOCK_HIGH; + + if (mode->clock > 600000) + return MODE_CLOCK_HIGH; + + if ((mode->clock * 1000) / (mode->htotal * mode->vtotal) > MTK_VDOSYS1_MAX_FRAMERATE) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + +static u32 *mtk_dp_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + unsigned int *num_output_fmts) +{ + u32 *output_fmts; + + *num_output_fmts = 0; + output_fmts = kmalloc(sizeof(*output_fmts), GFP_KERNEL); + if (!output_fmts) + return NULL; + *num_output_fmts = 1; + output_fmts[0] = MEDIA_BUS_FMT_FIXED; + return output_fmts; +} + +static const u32 mt8195_input_fmts[] = { + MEDIA_BUS_FMT_RGB888_1X24, + MEDIA_BUS_FMT_YUV8_1X24, + MEDIA_BUS_FMT_YUYV8_1X16, +}; + +static u32 *mtk_dp_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + u32 *input_fmts; + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + struct drm_display_mode *mode = &crtc_state->adjusted_mode; + struct drm_display_info *display_info = + &conn_state->connector->display_info; + u32 rx_linkrate = (u32)mtk_dp->train_info.link_rate * 27000; + + *num_input_fmts = 0; + + if (((rx_linkrate * mtk_dp->train_info.lane_count) < + (mode->clock * 24 / 8)) && + ((rx_linkrate * mtk_dp->train_info.lane_count) > + (mode->clock * 16 / 8)) && + (display_info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) { + input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL); + if (!input_fmts) + return NULL; + *num_input_fmts = 1; + input_fmts[0] = MEDIA_BUS_FMT_YUYV8_1X16; + } else { + input_fmts = kcalloc(ARRAY_SIZE(mt8195_input_fmts), sizeof(*input_fmts), + GFP_KERNEL); + if (!input_fmts) + return NULL; + + *num_input_fmts = ARRAY_SIZE(mt8195_input_fmts); + memcpy(input_fmts, mt8195_input_fmts, sizeof(mt8195_input_fmts)); + } + + return input_fmts; +} + +static int mtk_dp_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); + struct drm_crtc *crtc = conn_state->crtc; + unsigned int input_bus_format; + + input_bus_format = bridge_state->input_bus_cfg.format; + + dev_dbg(mtk_dp->dev, "input format 0x%04x, output format 0x%04x\n", + bridge_state->input_bus_cfg.format, + bridge_state->output_bus_cfg.format); + + mtk_dp->input_fmt = input_bus_format; + if (mtk_dp->input_fmt == MEDIA_BUS_FMT_YUYV8_1X16) + mtk_dp->info.format = DP_PIXELFORMAT_YUV422; + else + mtk_dp->info.format = DP_PIXELFORMAT_RGB; + + if (!crtc) { + drm_err(mtk_dp->drm_dev, + "Can't enable bridge as connector state doesn't have a crtc\n"); + return -EINVAL; + } + + mtk_dp_parse_drm_mode_timings(mtk_dp, &crtc_state->adjusted_mode); + if (!mtk_dp_parse_capabilities(mtk_dp)) { + drm_err(mtk_dp->drm_dev, + "Can't enable bridge as nothing is plugged in\n"); + return -EINVAL; + } + + return 0; +} + +static const struct drm_bridge_funcs mtk_dp_bridge_funcs = { + .atomic_check = mtk_dp_bridge_atomic_check, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_get_output_bus_fmts = mtk_dp_bridge_atomic_get_output_bus_fmts, + .atomic_get_input_bus_fmts = mtk_dp_bridge_atomic_get_input_bus_fmts, + .atomic_reset = drm_atomic_helper_bridge_reset, + .attach = mtk_dp_bridge_attach, + .detach = mtk_dp_bridge_detach, + .atomic_enable = mtk_dp_bridge_atomic_enable, + .atomic_disable = mtk_dp_bridge_atomic_disable, + .mode_valid = mtk_dp_bridge_mode_valid, + .get_edid = mtk_dp_get_edid, +}; + +static int mtk_dp_probe(struct platform_device *pdev) +{ + struct mtk_dp *mtk_dp; + struct device *dev = &pdev->dev; + int ret; + int irq_num = 0; + + mtk_dp = devm_kzalloc(dev, sizeof(*mtk_dp), GFP_KERNEL); + if (!mtk_dp) + return -ENOMEM; + + mtk_dp->dev = dev; + + irq_num = platform_get_irq(pdev, 0); + if (irq_num < 0) + return dev_err_probe(dev, irq_num, "failed to request dp irq resource\n"); + + mtk_dp->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0); + if (IS_ERR(mtk_dp->next_bridge)) { + return dev_err_probe(dev, PTR_ERR(mtk_dp->next_bridge), "Failed to get bridge\n"); + } + + ret = mtk_dp_dt_parse(mtk_dp, pdev); + if (ret) + return dev_err_probe(dev, ret, "Failed to parse dt\n"); + + drm_dp_aux_init(&mtk_dp->aux); + mtk_dp->aux.name = "aux_mtk_dp"; + mtk_dp->aux.transfer = mtk_dp_aux_transfer; + + ret = devm_request_threaded_irq(dev, irq_num, mtk_dp_hpd_event, + mtk_dp_hpd_event_thread, + IRQ_TYPE_LEVEL_HIGH, dev_name(dev), + mtk_dp); + if (ret) + return dev_err_probe(dev, -EPROBE_DEFER, "failed to request mediatek dptx irq\n"); + + mutex_init(&mtk_dp->dp_lock); + + platform_set_drvdata(pdev, mtk_dp); + + mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-dp-phy", + PLATFORM_DEVID_AUTO, + &mtk_dp->regs, + sizeof(struct regmap *)); + if (IS_ERR(mtk_dp->phy_dev)) + return dev_err_probe(dev, PTR_ERR(mtk_dp->phy_dev), "Failed to create device mediatek-dp-phy\n"); + + mtk_dp_get_calibration_data(mtk_dp); + + mtk_dp->phy = devm_phy_get(&mtk_dp->phy_dev->dev, "dp"); + + if (IS_ERR(mtk_dp->phy)) { + platform_device_unregister(mtk_dp->phy_dev); + return dev_err_probe(dev, PTR_ERR(mtk_dp->phy), "Failed to get phy\n"); + } + + mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs; + mtk_dp->bridge.of_node = dev->of_node; + + mtk_dp->bridge.ops = + DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HPD; + drm_bridge_add(&mtk_dp->bridge); + mtk_dp->bridge.type = DRM_MODE_CONNECTOR_eDP; + + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + + return 0; +} + +static int mtk_dp_remove(struct platform_device *pdev) +{ + struct mtk_dp *mtk_dp = platform_get_drvdata(pdev); + + platform_device_unregister(mtk_dp->phy_dev); + mtk_dp_video_mute(mtk_dp, true); + + pm_runtime_disable(&pdev->dev); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int mtk_dp_suspend(struct device *dev) +{ + int ret; + struct mtk_dp *mtk_dp = dev_get_drvdata(dev); + + if (mtk_dp_plug_state(mtk_dp)) { + drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D3); + /* Ensure the sink is off before shutting down power */ + usleep_range(2000, 3000); + } + + ret = mtk_dp_power_disable(mtk_dp); + if (ret) + return ret; + + mtk_dp_hwirq_enable(mtk_dp, false); + + pm_runtime_put_sync(dev); + + return 0; +} + +static int mtk_dp_resume(struct device *dev) +{ + int ret; + struct mtk_dp *mtk_dp = dev_get_drvdata(dev); + + pm_runtime_get_sync(dev); + + mtk_dp_init_port(mtk_dp); + mtk_dp_hwirq_enable(mtk_dp, true); + ret = mtk_dp_power_enable(mtk_dp); + + return ret; +} +#endif + +static SIMPLE_DEV_PM_OPS(mtk_dp_pm_ops, mtk_dp_suspend, mtk_dp_resume); + +static const struct of_device_id mtk_dp_of_match[] = { + { .compatible = "mediatek,mt8195-edp-tx" }, + {}, +}; +MODULE_DEVICE_TABLE(of, mtk_dp_of_match); + +struct platform_driver mtk_dp_driver = { + .probe = mtk_dp_probe, + .remove = mtk_dp_remove, + .driver = { + .name = "mediatek-drm-dp", + .of_match_table = mtk_dp_of_match, + .pm = &mtk_dp_pm_ops, + }, +}; + +MODULE_AUTHOR("Jitao Shi <jitao.shi@mediatek.com>"); +MODULE_AUTHOR("Markus Schneider-Pargmann <msp@baylibre.com>"); +MODULE_DESCRIPTION("MediaTek DisplayPort Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/mediatek/mtk_dp_reg.h b/drivers/gpu/drm/mediatek/mtk_dp_reg.h new file mode 100644 index 000000000000..848e5f697737 --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_dp_reg.h @@ -0,0 +1,570 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2019 MediaTek Inc. + * Copyright (c) 2021 BayLibre + */ +#ifndef _MTK_DP_REG_H_ +#define _MTK_DP_REG_H_ + +#define MTK_DP_SIP_CONTROL_AARCH32 \ + (BIT(0) | BIT(1) | BIT(5) | BIT(8) | BIT(10) | BIT(25) | BIT(31)) +#define MTK_DP_SIP_ATF_VIDEO_UNMUTE BIT(5) +#define MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE (BIT(0) | BIT(5)) + +#define DP_PHY_GLB_BIAS_GEN_00 0 +#define RG_XTP_GLB_BIAS_INTR_CTRL GENMASK(20, 16) + +#define DP_PHY_GLB_DPAUX_TX BIT(3) +#define RG_CKM_PT0_CKTX_IMPSEL GENMASK(23, 20) + +#define DP_PHY_LANE_TX_0 (BIT(2) | BIT(8)) +#define RG_XTP_LN0_TX_IMPSEL_PMOS GENMASK(15, 12) +#define RG_XTP_LN0_TX_IMPSEL_NMOS GENMASK(19, 16) + +#define DP_PHY_LANE_TX_1 (BIT(2) | BIT(9)) +#define RG_XTP_LN1_TX_IMPSEL_PMOS GENMASK(15, 12) +#define RG_XTP_LN1_TX_IMPSEL_NMOS GENMASK(19, 16) + +#define DP_PHY_LANE_TX_2 (BIT(2) | BIT(8) | BIT(9)) +#define RG_XTP_LN2_TX_IMPSEL_PMOS GENMASK(15, 12) +#define RG_XTP_LN2_TX_IMPSEL_NMOS GENMASK(19, 16) + +#define DP_PHY_LANE_TX_3 (BIT(2) | BIT(10)) +#define RG_XTP_LN3_TX_IMPSEL_PMOS GENMASK(15, 12) +#define RG_XTP_LN3_TX_IMPSEL_NMOS GENMASK(19, 16) + +#define TOP_OFFSET BIT(13) +#define ENC0_OFFSET GENMASK(13, 12) +#define ENC1_OFFSET (BIT(9) | BIT(12) | BIT(13)) +#define TRANS_OFFSET (BIT(10) | BIT(12) | BIT(13)) +#define AUX_OFFSET (BIT(9) | BIT(10) | BIT(12) | BIT(13)) +#define SEC_OFFSET BIT(14) + +#define MTK_DP_HPD_DISCONNECT BIT(1) +#define MTK_DP_HPD_CONNECT BIT(2) +#define MTK_DP_HPD_INTERRUPT BIT(3) + +#define MTK_DP_0034 (BIT(2) | BIT(4) | BIT(5)) +#define DA_XTP_GLB_CKDET_EN_FORCE_VAL BIT(15) +#define DA_XTP_GLB_CKDET_EN_FORCE_EN BIT(14) +#define DA_CKM_INTCKTX_EN_FORCE_VAL BIT(13) +#define DA_CKM_INTCKTX_EN_FORCE_EN BIT(12) +#define DA_CKM_CKTX0_EN_FORCE_VAL BIT(11) +#define DA_CKM_CKTX0_EN_FORCE_EN BIT(10) +#define DA_CKM_XTAL_CK_FORCE_VAL BIT(9) +#define DA_CKM_XTAL_CK_FORCE_EN BIT(8) +#define DA_CKM_BIAS_LPF_EN_FORCE_VAL BIT(7) +#define DA_CKM_BIAS_LPF_EN_FORCE_EN BIT(6) +#define DA_CKM_BIAS_EN_FORCE_VAL BIT(5) +#define DA_CKM_BIAS_EN_FORCE_EN BIT(4) +#define DA_XTP_GLB_AVD10_ON_FORCE_VAL BIT(3) +#define DA_XTP_GLB_AVD10_ON_FORCE BIT(2) +#define DA_XTP_GLB_LDO_EN_FORCE_VAL BIT(1) +#define DA_XTP_GLB_LDO_EN_FORCE_EN BIT(0) + +#define MTK_DP_1040 (BIT(6) | BIT(12)) +#define RG_DPAUX_RX_VALID_DEGLITCH_EN BIT(2) +#define RG_XTP_GLB_CKDET_EN BIT(1) +#define RG_DPAUX_RX_EN BIT(0) + +#define MTK_DP_ENC0_P0_3000 (ENC0_OFFSET + 0x00) +#define LANE_NUM_DP_ENC0_P0_MASK GENMASK(1, 0) +#define VIDEO_MUTE_SW_DP_ENC0_P0_MASK BIT(2) +#define VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT BIT(1) +#define VIDEO_MUTE_SEL_DP_ENC0_P0_MASK BIT(3) +#define VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT GENMASK(1, 0) +#define ENHANCED_FRAME_EN_DP_ENC0_P0_MASK BIT(4) +#define ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT BIT(2) + +#define MTK_DP_ENC0_P0_3004 (ENC0_OFFSET + 0x04) +#define VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK BIT(8) +#define VIDEO_M_CODE_SEL_DP_ENC0_P0_SHIFT BIT(3) +#define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK BIT(9) +#define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT (BIT(0) | BIT(3)) + +#define MTK_DP_ENC0_P0_3008 (ENC0_OFFSET + 0x08) +#define VIDEO_M_CODE_SW_0_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_300C (ENC0_OFFSET + 0x0C) +#define VIDEO_M_CODE_SW_1_DP_ENC0_P0_MASK GENMASK(7, 0) + +#define MTK_DP_ENC0_P0_3010 (ENC0_OFFSET + 0x10) +#define HTOTAL_SW_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3014 (ENC0_OFFSET + 0x14) +#define VTOTAL_SW_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3018 (ENC0_OFFSET + 0x18) +#define HSTART_SW_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_301C (ENC0_OFFSET + 0x1C) +#define VSTART_SW_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3020 (ENC0_OFFSET + 0x20) +#define HWIDTH_SW_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3024 (ENC0_OFFSET + 0x24) +#define VHEIGHT_SW_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3028 (ENC0_OFFSET + 0x28) +#define HSW_SW_DP_ENC0_P0_MASK GENMASK(14, 0) +#define HSW_SW_DP_ENC0_P0_SHIFT 0 +#define HSP_SW_DP_ENC0_P0_MASK (BIT(15)) + +#define MTK_DP_ENC0_P0_302C (ENC0_OFFSET + 0x2C) +#define VSW_SW_DP_ENC0_P0_MASK GENMASK(14, 0) +#define VSW_SW_DP_ENC0_P0_SHIFT 0 +#define VSP_SW_DP_ENC0_P0_MASK (BIT(15)) + +#define MTK_DP_ENC0_P0_3030 (ENC0_OFFSET + 0x30) +#define HTOTAL_SEL_DP_ENC0_P0_SHIFT 0 +#define VTOTAL_SEL_DP_ENC0_P0_SHIFT BIT(0) +#define HSTART_SEL_DP_ENC0_P0_SHIFT BIT(1) +#define VSTART_SEL_DP_ENC0_P0_SHIFT GENMASK(1, 0) +#define HWIDTH_SEL_DP_ENC0_P0_SHIFT BIT(2) +#define VHEIGHT_SEL_DP_ENC0_P0_SHIFT (BIT(0) | BIT(2)) +#define HSP_SEL_DP_ENC0_P0_SHIFT GENMASK(2, 1) +#define HSW_SEL_DP_ENC0_P0_SHIFT GENMASK(2, 0) +#define VSP_SEL_DP_ENC0_P0_SHIFT BIT(3) +#define VSW_SEL_DP_ENC0_P0_SHIFT (BIT(0) | BIT(3)) +#define VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK (BIT(11)) +#define VBID_AUDIO_MUTE_SW_DP_ENC0_P0_SHIFT (BIT(0) | BIT(1) | BIT(3)) +#define VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK (BIT(12)) +#define VBID_AUDIO_MUTE_SEL_DP_ENC0_P0_SHIFT GENMASK(3, 2) + +#define MTK_DP_ENC0_P0_3034 (ENC0_OFFSET + 0x34) + +#define MTK_DP_ENC0_P0_3038 (ENC0_OFFSET + 0x38) +#define VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK (BIT(11)) +#define VIDEO_SOURCE_SEL_DP_ENC0_P0_SHIFT (BIT(0) | BIT(1) | BIT(3)) + +#define MTK_DP_ENC0_P0_303C (ENC0_OFFSET + 0x3C) +#define SRAM_START_READ_THRD_DP_ENC0_P0_MASK GENMASK(5, 0) +#define SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT 0 +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK GENMASK(10, 8) +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT BIT(3) +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT \ + (0 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT) +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT \ + (1 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT) +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT \ + (2 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT) +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT \ + (3 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT) +#define VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT \ + (4 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT) +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK GENMASK(14, 12) +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT GENMASK(3, 2) +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB \ + (0 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT) +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422 \ + (1 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT) +#define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420 \ + (2 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT) +#define VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK (BIT(15)) +#define VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT GENMASK(3, 0) + +#define MTK_DP_ENC0_P0_3040 (ENC0_OFFSET + 0x40) +#define SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK GENMASK(11, 0) +#define SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT 0 + +#define MTK_DP_ENC0_P0_3044 (ENC0_OFFSET + 0x44) +#define VIDEO_N_CODE_0_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3048 (ENC0_OFFSET + 0x48) +#define VIDEO_N_CODE_1_DP_ENC0_P0_MASK GENMASK(7, 0) + +#define MTK_DP_ENC0_P0_304C (ENC0_OFFSET + 0x4C) +#define VBID_VIDEO_MUTE_DP_ENC0_P0_MASK BIT(2) +#define SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK BIT(8) + +#define MTK_DP_ENC0_P0_3050 (ENC0_OFFSET + 0x50) +#define VIDEO_N_CODE_MN_GEN_0_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3054 (ENC0_OFFSET + 0x54) +#define VIDEO_N_CODE_MN_GEN_1_DP_ENC0_P0_MASK GENMASK(7, 0) + +#define MTK_DP_ENC0_P0_3064 (ENC0_OFFSET + 0x64) +#define HDE_NUM_LAST_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3088 (ENC0_OFFSET + 0x88) +#define AU_EN_DP_ENC0_P0_MASK BIT(6) +#define AU_EN_DP_ENC0_P0_SHIFT GENMASK(2, 1) +#define AUDIO_8CH_EN_DP_ENC0_P0_MASK BIT(7) +#define AUDIO_8CH_SEL_DP_ENC0_P0_MASK BIT(8) +#define AUDIO_2CH_EN_DP_ENC0_P0_MASK (BIT(14)) +#define AUDIO_2CH_SEL_DP_ENC0_P0_MASK (BIT(15)) + +#define MTK_DP_ENC0_P0_308C (ENC0_OFFSET + 0x8C) +#define CH_STATUS_0_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3090 (ENC0_OFFSET + 0x90) +#define CH_STATUS_1_DP_ENC0_P0_MASK GENMASK(15, 0) + +#define MTK_DP_ENC0_P0_3094 (ENC0_OFFSET + 0x94) +#define CH_STATUS_2_DP_ENC0_P0_MASK GENMASK(7, 0) + +#define MTK_DP_ENC0_P0_30A0 (ENC0_OFFSET + 0xA0) + +#define MTK_DP_ENC0_P0_30A4 (ENC0_OFFSET + 0xA4) +#define AU_TS_CFG_DP_ENC0_P0_MASK GENMASK(7, 0) + +#define MTK_DP_ENC0_P0_30A8 (ENC0_OFFSET + 0xA8) + +#define MTK_DP_ENC0_P0_30AC (ENC0_OFFSET + 0xAC) + +#define MTK_DP_ENC0_P0_30B0 (ENC0_OFFSET + 0xB0) + +#define MTK_DP_ENC0_P0_30B4 (ENC0_OFFSET + 0xB4) +#define ISRC_CFG_DP_ENC0_P0_MASK GENMASK(15, 8) +#define ISRC_CFG_DP_ENC0_P0_SHIFT BIT(3) + +#define MTK_DP_ENC0_P0_30B8 (ENC0_OFFSET + 0xB8) + +#define MTK_DP_ENC0_P0_30BC (ENC0_OFFSET + 0xBC) +#define ISRC_CONT_DP_ENC0_P0_MASK BIT(0) +#define ISRC_CONT_DP_ENC0_P0_SHIFT 0 +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MASK GENMASK(10, 8) +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT BIT(3) +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_2 \ + (1 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT) +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_4 \ + (2 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT) +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_8 \ + (3 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT) +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2 \ + (5 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT) +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_4 \ + (6 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT) +#define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_8 \ + (7 << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT) + +#define MTK_DP_ENC0_P0_30D8 (ENC0_OFFSET + 0xD8) + +#define MTK_DP_ENC0_P0_312C (ENC0_OFFSET + 0x12C) +#define ASP_HB2_DP_ENC0_P0_MASK GENMASK(7, 0) +#define ASP_HB3_DP_ENC0_P0_MASK GENMASK(15, 8) +#define ASP_HB3_DP_ENC0_P0_SHIFT BIT(3) + +#define MTK_DP_ENC0_P0_3130 (ENC0_OFFSET + 0x130) + +#define MTK_DP_ENC0_P0_3138 (ENC0_OFFSET + 0x138) + +#define MTK_DP_ENC0_P0_3154 (ENC0_OFFSET + 0x154) +#define PGEN_HTOTAL_DP_ENC0_P0_MASK GENMASK(13, 0) + +#define MTK_DP_ENC0_P0_3158 (ENC0_OFFSET + 0x158) +#define PGEN_HSYNC_RISING_DP_ENC0_P0_MASK GENMASK(13, 0) + +#define MTK_DP_ENC0_P0_315C (ENC0_OFFSET + 0x15C) +#define PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK GENMASK(13, 0) + +#define MTK_DP_ENC0_P0_3160 (ENC0_OFFSET + 0x160) +#define PGEN_HFDE_START_DP_ENC0_P0_MASK GENMASK(13, 0) + +#define MTK_DP_ENC0_P0_3164 (ENC0_OFFSET + 0x164) +#define PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK GENMASK(13, 0) + +#define MTK_DP_ENC0_P0_3168 (ENC0_OFFSET + 0x168) +#define PGEN_VTOTAL_DP_ENC0_P0_MASK GENMASK(12, 0) + +#define MTK_DP_ENC0_P0_316C (ENC0_OFFSET + 0x16C) +#define PGEN_VSYNC_RISING_DP_ENC0_P0_MASK GENMASK(12, 0) + +#define MTK_DP_ENC0_P0_3170 (ENC0_OFFSET + 0x170) +#define PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK GENMASK(12, 0) + +#define MTK_DP_ENC0_P0_3174 (ENC0_OFFSET + 0x174) +#define PGEN_VFDE_START_DP_ENC0_P0_MASK GENMASK(12, 0) + +#define MTK_DP_ENC0_P0_3178 (ENC0_OFFSET + 0x178) +#define PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK GENMASK(12, 0) + +#define MTK_DP_ENC0_P0_31B0 (ENC0_OFFSET + 0x1B0) +#define PGEN_PATTERN_SEL_SHIFT BIT(2) +#define PGEN_PATTERN_SEL_MASK GENMASK(6, 4) + +#define MTK_DP_ENC0_P0_31C8 (ENC0_OFFSET + 0x1C8) +#define VSC_EXT_VESA_HB0_DP_ENC0_P0_MASK GENMASK(7, 0) +#define VSC_EXT_VESA_HB1_DP_ENC0_P0_MASK GENMASK(15, 8) +#define VSC_EXT_VESA_HB1_DP_ENC0_P0_SHIFT BIT(3) + +#define MTK_DP_ENC0_P0_31CC (ENC0_OFFSET + 0x1CC) +#define VSC_EXT_VESA_HB2_DP_ENC0_P0_MASK GENMASK(7, 0) +#define VSC_EXT_VESA_HB2_DP_ENC0_P0_SHIFT 0 +#define VSC_EXT_VESA_HB3_DP_ENC0_P0_MASK GENMASK(15, 8) + +#define MTK_DP_ENC0_P0_31D0 (ENC0_OFFSET + 0x1D0) +#define VSC_EXT_CEA_HB0_DP_ENC0_P0_MASK GENMASK(7, 0) +#define VSC_EXT_CEA_HB1_DP_ENC0_P0_MASK GENMASK(15, 8) +#define VSC_EXT_CEA_HB1_DP_ENC0_P0_SHIFT BIT(3) + +#define MTK_DP_ENC0_P0_31D4 (ENC0_OFFSET + 0x1D4) +#define VSC_EXT_CEA_HB2_DP_ENC0_P0_MASK GENMASK(7, 0) +#define VSC_EXT_CEA_HB2_DP_ENC0_P0_SHIFT 0 +#define VSC_EXT_CEA_HB3_DP_ENC0_P0_MASK GENMASK(15, 8) + +#define MTK_DP_ENC0_P0_31D8 (ENC0_OFFSET + 0x1D8) +#define VSC_EXT_VESA_NUM_DP_ENC0_P0_MASK GENMASK(5, 0) +#define VSC_EXT_VESA_NUM_DP_ENC0_P0_SHIFT 0 +#define VSC_EXT_CEA_NUM_DP_ENC0_P0_MASK GENMASK(13, 8) +#define VSC_EXT_CEA_NUM_DP_ENC0_P0_SHIFT BIT(3) + +#define MTK_DP_ENC0_P0_31DC (ENC0_OFFSET + 0x1DC) +#define HDR0_CFG_DP_ENC0_P0_MASK GENMASK(7, 0) +#define HDR0_CFG_DP_ENC0_P0_SHIFT 0 + +#define MTK_DP_ENC0_P0_31E8 (ENC0_OFFSET + 0x1E8) + +#define MTK_DP_ENC0_P0_31EC (ENC0_OFFSET + 0x1EC) +#define AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK BIT(4) +#define AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT BIT(2) +#define ISRC1_HB3_DP_ENC0_P0_MASK GENMASK(15, 8) +#define ISRC1_HB3_DP_ENC0_P0_SHIFT BIT(3) + +#define MTK_DP_ENC1_P0_3200 (ENC1_OFFSET + 0x00) + +#define MTK_DP_ENC1_P0_3280 (ENC1_OFFSET + 0x80) +#define SDP_PACKET_TYPE_DP_ENC1_P0_MASK GENMASK(4, 0) +#define SDP_PACKET_W_DP_ENC1_P0 BIT(5) +#define SDP_PACKET_W_DP_ENC1_P0_MASK BIT(5) +#define SDP_PACKET_W_DP_ENC1_P0_SHIFT (BIT(0) | BIT(2)) + +#define MTK_DP_ENC1_P0_328C (ENC1_OFFSET + 0x8C) + +#define MTK_DP_ENC1_P0_3290 (ENC1_OFFSET + 0x90) + +#define MTK_DP_ENC1_P0_32A0 (ENC1_OFFSET + 0xA0) + +#define MTK_DP_ENC1_P0_32A4 (ENC1_OFFSET + 0xA4) + +#define MTK_DP_ENC1_P0_3300 (ENC1_OFFSET + 0x100) +#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK GENMASK(9, 8) +#define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT BIT(3) + +#define MTK_DP_ENC1_P0_3304 (ENC1_OFFSET + 0x104) +#define AU_PRTY_REGEN_DP_ENC1_P0_MASK BIT(8) +#define AU_CH_STS_REGEN_DP_ENC1_P0_MASK BIT(9) +#define AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK (BIT(12)) + +#define MTK_DP_ENC1_P0_3324 (ENC1_OFFSET + 0x124) +#define AUDIO_SOURCE_MUX_DP_ENC1_P0_MASK GENMASK(9, 8) +#define AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT BIT(3) +#define AUDIO_SOURCE_MUX_DP_ENC1_P0_DPRX \ + (0 << AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT) + +#define MTK_DP_ENC1_P0_3364 (ENC1_OFFSET + 0x164) +#define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK GENMASK(11, 0) +#define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT 0 +#define FIFO_READ_START_POINT_DP_ENC1_P0_MASK GENMASK(15, 12) +#define FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT GENMASK(3, 2) + +#define MTK_DP_ENC1_P0_3368 (ENC1_OFFSET + 0x168) +#define VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT 0 +#define VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT BIT(2) +#define SDP_DP13_EN_DP_ENC1_P0_SHIFT BIT(3) +#define BS2BS_MODE_DP_ENC1_P0_MASK GENMASK(13, 12) +#define BS2BS_MODE_DP_ENC1_P0_SHIFT GENMASK(3, 2) + +#define MTK_DP_ENC1_P0_33F4 (ENC1_OFFSET + 0x1F4) + +#define MTK_DP_TRANS_P0_3400 (TRANS_OFFSET + 0) +#define PATTERN1_EN_DP_TRANS_P0_MASK BIT(12) +#define PATTERN1_EN_DP_TRANS_P0_SHIFT GENMASK(3, 2) +#define PATTERN2_EN_DP_TRANS_P0_MASK BIT(13) +#define PATTERN3_EN_DP_TRANS_P0_MASK BIT(14) +#define PATTERN4_EN_DP_TRANS_P0_MASK BIT(15) + +#define MTK_DP_TRANS_P0_3404 (TRANS_OFFSET + 0x4) +#define DP_SCR_EN_DP_TRANS_P0_MASK BIT(0) + +#define MTK_DP_TRANS_P0_340C (TRANS_OFFSET + 0xC) +#define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK (BIT(13)) +#define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT \ + (BIT(0) | BIT(2) | BIT(3)) + +#define MTK_DP_TRANS_P0_3410 (TRANS_OFFSET + 0x10) +#define HPD_DEB_THD_DP_TRANS_P0_MASK GENMASK(3, 0) +#define HPD_DEB_THD_DP_TRANS_P0_SHIFT 0 +#define HPD_INT_THD_DP_TRANS_P0_MASK GENMASK(7, 4) +#define HPD_INT_THD_DP_TRANS_P0_SHIFT BIT(2) +#define HPD_INT_THD_DP_TRANS_P0_LOWER_500US (2 << HPD_INT_THD_DP_TRANS_P0_SHIFT) +#define HPD_INT_THD_DP_TRANS_P0_UPPER_1100US \ + (2 << (HPD_INT_THD_DP_TRANS_P0_SHIFT + 2)) +#define HPD_DISC_THD_DP_TRANS_P0_MASK GENMASK(11, 8) +#define HPD_DISC_THD_DP_TRANS_P0_SHIFT BIT(3) +#define HPD_CONN_THD_DP_TRANS_P0_MASK GENMASK(15, 12) +#define HPD_CONN_THD_DP_TRANS_P0_SHIFT GENMASK(3, 2) + +#define MTK_DP_TRANS_P0_3414 (TRANS_OFFSET + 0x14) +#define HPD_DB_DP_TRANS_P0_MASK BIT(2) + +#define MTK_DP_TRANS_P0_3418 (TRANS_OFFSET + 0x18) +#define IRQ_CLR_DP_TRANS_P0_MASK GENMASK(3, 0) +#define IRQ_MASK_DP_TRANS_P0_MASK GENMASK(7, 4) +#define IRQ_MASK_DP_TRANS_P0_SHIFT BIT(2) +#define IRQ_MASK_DP_TRANS_P0_DISC_IRQ (BIT(1) << IRQ_MASK_DP_TRANS_P0_SHIFT) +#define IRQ_MASK_DP_TRANS_P0_CONN_IRQ (BIT(2) << IRQ_MASK_DP_TRANS_P0_SHIFT) +#define IRQ_MASK_DP_TRANS_P0_INT_IRQ (BIT(3) << IRQ_MASK_DP_TRANS_P0_SHIFT) +#define IRQ_STATUS_DP_TRANS_P0_MASK GENMASK(15, 12) +#define IRQ_STATUS_DP_TRANS_P0_SHIFT GENMASK(3, 2) + +#define MTK_DP_TRANS_P0_342C (TRANS_OFFSET + 0x2C) +#define XTAL_FREQ_DP_TRANS_P0_DEFAULT (BIT(0) | BIT(3) | BIT(5) | BIT(6)) +#define XTAL_FREQ_DP_TRANS_P0_MASK GENMASK(7, 0) + +#define MTK_DP_TRANS_P0_3430 (TRANS_OFFSET + 0x30) +#define HPD_INT_THD_ECO_DP_TRANS_P0_MASK GENMASK(1, 0) +#define HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT BIT(1) + +#define MTK_DP_TRANS_P0_34A4 (TRANS_OFFSET + 0xA4) +#define LANE_NUM_DP_TRANS_P0_MASK GENMASK(3, 2) +#define LANE_NUM_DP_TRANS_P0_SHIFT BIT(1) + +#define MTK_DP_TRANS_P0_3540 (TRANS_OFFSET + 0x140) +#define FEC_EN_DP_TRANS_P0_MASK BIT(0) +#define FEC_EN_DP_TRANS_P0_SHIFT 0 +#define FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK BIT(3) +#define FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT GENMASK(1, 0) + +#define MTK_DP_TRANS_P0_3580 (TRANS_OFFSET + 0x180) +#define POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK BIT(8) +#define POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK BIT(9) +#define POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK (BIT(10)) +#define POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK (BIT(11)) + +#define MTK_DP_TRANS_P0_35C4 (TRANS_OFFSET + 0x1C4) +#define SW_IRQ_MASK_DP_TRANS_P0_MASK GENMASK(15, 0) + +#define MTK_DP_TRANS_P0_35C8 (TRANS_OFFSET + 0x1C8) +#define SW_IRQ_CLR_DP_TRANS_P0_MASK GENMASK(15, 0) + +#define SW_IRQ_STATUS_DP_TRANS_P0_MASK GENMASK(15, 0) +#define SW_IRQ_STATUS_DP_TRANS_P0_SHIFT 0 + +#define MTK_DP_TRANS_P0_35D0 (TRANS_OFFSET + 0x1D0) +#define SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK GENMASK(15, 0) + +#define MTK_DP_TRANS_P0_35F0 (TRANS_OFFSET + 0x1F0) + +#define MTK_DP_AUX_P0_360C (AUX_OFFSET + 0xC) +#define AUX_TIMEOUT_THR_AUX_TX_P0_MASK GENMASK(12, 0) + +#define MTK_DP_AUX_P0_3614 (AUX_OFFSET + 0x14) +#define AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK GENMASK(6, 0) +#define AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT 0 + +#define MTK_DP_AUX_P0_3618 (AUX_OFFSET + 0x18) +#define AUX_RX_FIFO_FULL_AUX_TX_P0_MASK BIT(9) +#define AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK GENMASK(3, 0) + +#define MTK_DP_AUX_P0_3620 (AUX_OFFSET + 0x20) +#define AUX_RD_MODE_AUX_TX_P0_MASK BIT(9) +#define AUX_RX_FIFO_READ_PULSE_TX_P0_MASK BIT(8) +#define AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT BIT(3) +#define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK GENMASK(7, 0) +#define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT 0 + +#define MTK_DP_AUX_P0_3624 (AUX_OFFSET + 0x24) +#define AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK GENMASK(3, 0) + +#define MTK_DP_AUX_P0_3628 (AUX_OFFSET + 0x28) +#define AUX_RX_PHY_STATE_AUX_TX_P0_MASK GENMASK(9, 0) +#define AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT 0 +#define AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE \ + (BIT(0) << AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT) + +#define MTK_DP_AUX_P0_362C (AUX_OFFSET + 0x2C) +#define AUX_NO_LENGTH_AUX_TX_P0_MASK BIT(0) +#define AUX_NO_LENGTH_AUX_TX_P0_SHIFT 0 +#define AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK BIT(1) +#define AUX_RESERVED_RW_0_AUX_TX_P0_MASK GENMASK(15, 2) + +#define MTK_DP_AUX_P0_3630 (AUX_OFFSET + 0x30) +#define AUX_TX_REQUEST_READY_AUX_TX_P0_MASK BIT(3) +#define AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT GENMASK(1, 0) + +#define MTK_DP_AUX_P0_3634 (AUX_OFFSET + 0x34) +#define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK GENMASK(15, 8) +#define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT BIT(3) + +#define MTK_DP_AUX_P0_3640 (AUX_OFFSET + 0x40) +#define AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK BIT(6) +#define AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT GENMASK(2, 1) +#define AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT (BIT(0) | BIT(2)) +#define AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT BIT(2) +#define AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT GENMASK(1, 0) +#define AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT BIT(1) +#define AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT BIT(0) +#define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK BIT(0) +#define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT 0 + +#define MTK_DP_AUX_P0_3644 (AUX_OFFSET + 0x44) +#define MCU_REQUEST_COMMAND_AUX_TX_P0_MASK GENMASK(3, 0) + +#define MTK_DP_AUX_P0_3648 (AUX_OFFSET + 0x48) +#define MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK GENMASK(15, 0) + +#define MTK_DP_AUX_P0_364C (AUX_OFFSET + 0x4C) +#define MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK GENMASK(3, 0) + +#define MTK_DP_AUX_P0_3650 (AUX_OFFSET + 0x50) +#define MCU_REQ_DATA_NUM_AUX_TX_P0_MASK GENMASK(15, 12) +#define MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT GENMASK(3, 2) +#define PHY_FIFO_RST_AUX_TX_P0_MASK BIT(9) +#define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK BIT(8) +#define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT BIT(3) + +#define MTK_DP_AUX_P0_3658 (AUX_OFFSET + 0x58) +#define AUX_TX_OV_EN_AUX_TX_P0_MASK BIT(0) + +#define MTK_DP_AUX_P0_3690 (AUX_OFFSET + 0x90) +#define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK BIT(8) +#define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT BIT(3) + +#define MTK_DP_AUX_P0_3704 (AUX_OFFSET + 0x104) +#define AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK BIT(1) +#define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK BIT(2) +#define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT BIT(1) + +#define MTK_DP_AUX_P0_3708 (AUX_OFFSET + 0x108) + +#define MTK_DP_AUX_P0_37C8 (AUX_OFFSET + 0x1C8) +#define MTK_ATOP_EN_AUX_TX_P0_MASK BIT(0) +#define MTK_ATOP_EN_AUX_TX_P0_SHIFT 0 + +#define MTK_DP_TOP_PWR_STATE (TOP_OFFSET + 0x0) +#define DP_PWR_STATE_MASK GENMASK(1, 0) +#define DP_PWR_STATE_BANDGAP BIT(0) +#define DP_PWR_STATE_BANDGAP_TPLL BIT(1) +#define DP_PWR_STATE_BANDGAP_TPLL_LANE GENMASK(1, 0) + +#define MTK_DP_TOP_SWING_EMP (TOP_OFFSET + 0x4) +#define DP_TX0_VOLT_SWING_MASK GENMASK(1, 0) +#define DP_TX0_VOLT_SWING_SHIFT 0 +#define DP_TX0_PRE_EMPH_MASK GENMASK(3, 2) +#define DP_TX0_PRE_EMPH_SHIFT BIT(1) +#define DP_TX1_VOLT_SWING_MASK GENMASK(9, 8) +#define DP_TX1_VOLT_SWING_SHIFT BIT(3) +#define DP_TX1_PRE_EMPH_MASK GENMASK(11, 10) +#define DP_TX2_VOLT_SWING_MASK GENMASK(17, 16) +#define DP_TX2_PRE_EMPH_MASK GENMASK(19, 18) +#define DP_TX3_VOLT_SWING_MASK GENMASK(25, 24) +#define DP_TX3_PRE_EMPH_MASK GENMASK(27, 26) + +#define MTK_DP_TOP_RESET_AND_PROBE (TOP_OFFSET + 0x20) +#define SW_RST_B_SHIFT 0 +#define SW_RST_B_PHYD (BIT(4) << SW_RST_B_SHIFT) + +#define MTK_DP_TOP_IRQ_STATUS (TOP_OFFSET + 0x28) +#define RGS_IRQ_STATUS_SHIFT 0 +#define RGS_IRQ_STATUS_TRANSMITTER (BIT(1) << RGS_IRQ_STATUS_SHIFT) + +#define MTK_DP_TOP_IRQ_MASK (TOP_OFFSET + 0x2C) +#define IRQ_MASK_AUX_TOP_IRQ BIT(2) + +#define MTK_DP_TOP_MEM_PD (TOP_OFFSET + 0x38) +#define MEM_ISO_EN_SHIFT 0 +#define FUSE_SEL_SHIFT BIT(1) + +#endif /*_MTK_DP_REG_H_*/ diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index e25ac61aac08..4e378eb34071 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -906,6 +906,9 @@ static struct platform_driver * const mtk_drm_drivers[] = { &mtk_disp_ovl_driver, &mtk_disp_rdma_driver, &mtk_dpi_driver, +#if IS_REACHABLE(CONFIG_DRM_MEDIATEK_DP) + &mtk_dp_driver, +#endif &mtk_drm_platform_driver, &mtk_dsi_driver, &mtk_ethdr_driver, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h index 8d3ff32b5364..04de9436ea85 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h @@ -59,6 +59,9 @@ extern struct platform_driver mtk_disp_ovl_adaptor_driver; extern struct platform_driver mtk_disp_ovl_driver; extern struct platform_driver mtk_disp_rdma_driver; extern struct platform_driver mtk_dpi_driver; +#if IS_REACHABLE(CONFIG_DRM_MEDIATEK_DP) +extern struct platform_driver mtk_dp_driver; +#endif extern struct platform_driver mtk_dsi_driver; extern struct platform_driver mtk_ethdr_driver; extern struct platform_driver mtk_mdp_rdma_driver;

[v10,18/21] drm/mediatek: Add mt8195 Embedded DisplayPort driver

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