From patchwork Tue Sep 3 06:57:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keke Li via B4 Relay X-Patchwork-Id: 13788119 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3523B1D61B4; Tue, 3 Sep 2024 06:57:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725346638; cv=none; b=OE3aLcBD7YH9cEPl4O6uFlbKSf8x8djy/WqzTnI8p+x3NuPtgPu7jrmmWDyrq4Ihc1gOEQ7xQGhOTfstUo5Sqe++qcuhWuAkpdi0ErSfqlbQ0m4BEdzSlHvIV3UbHPvXJYZav5FwwkVmU4ZforwDuGSM3mGQloi9lv0aA64BarA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725346638; c=relaxed/simple; bh=OG5RvVEKpUgHJXcYacFCnt5+85hp0daASAO2nGQmAMk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JgAQtJyT6OtEaYT6Pa6Joykr5JKutQbu4Me0n9dXOkgR1h67PwAitzbOUthHkfvOTMuH//AXHHdDWq5m+sYQa6Splxg/be/yXTevM0uvXTrfPG1NfKSd98gdJCDDONHvrkSW4Y2bRTRQa3rH4o9b2CGTgshELVKPnvHqiOSrL+o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=N/4kxqKN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="N/4kxqKN" Received: by smtp.kernel.org (Postfix) with ESMTPS id C1D4FC4CED0; Tue, 3 Sep 2024 06:57:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725346637; bh=OG5RvVEKpUgHJXcYacFCnt5+85hp0daASAO2nGQmAMk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=N/4kxqKNusRrFpm7K+5megU+LpIR26GXI9Hz/zdwX3JzfJ3GHeHVL+L4P6BWFHlan GKquRbuZ82Tf+EIUQTsLWtaYVL16zRRNbRnYddvEMpYVfZhcag/YEW5i6fTfmEKz82 Uxw1hd2FFPvEGLV5x8/htwMkeIODKDnFk71QQBJjE4Tv30hCH5VXCrROC6qsSkqXcR EMsnWo8yta67Mx7Gz3ZM/Nsq7T9NNZ+oACaBbUat3KTWTAou7IEGKNaec8n7lGa4Ne 8RkvLy+pZpPTvRa7RB+ESfH6bKeBJgTxq56T+1VQqmuzBOaUbWJkrn4I/IDJZgG8FI LHJ34ETC9Ocgg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id B90F9CD3430; Tue, 3 Sep 2024 06:57:17 +0000 (UTC) From: Keke Li via B4 Relay Date: Tue, 03 Sep 2024 14:57:08 +0800 Subject: [PATCH 4/9] media: platform: Add c3 mipi adapter driver Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240903-c3isp-v1-4-8af0edcc13c8@amlogic.com> References: <20240903-c3isp-v1-0-8af0edcc13c8@amlogic.com> In-Reply-To: <20240903-c3isp-v1-0-8af0edcc13c8@amlogic.com> To: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kieran.bingham@ideasonboard.com, laurent.pinchart@ideasonboard.com, dan.scally@ideasonboard.com, Keke Li X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1725346629; l=32635; i=keke.li@amlogic.com; s=20240902; h=from:subject:message-id; bh=ws6J5xT+O4H+FjQySTfeb0bbw6R+6NpEf1U3SfZzz14=; b=X3uHpoEF60vrqHLSiWkHPnMSUhFGfRV2NkVBsU0lHNdOoRPFwkFG289OBKFSsYo+llI4g0k8f Er4hPy45VA8C64Jzpys95yAgoFZSqMrJBL/zAgZoszmrNdo3JHW4ay3 X-Developer-Key: i=keke.li@amlogic.com; a=ed25519; pk=XxNPTsQ0YqMJLLekV456eoKV5gbSlxnViB1k1DhfRmU= X-Endpoint-Received: by B4 Relay for keke.li@amlogic.com/20240902 with auth_id=204 X-Original-From: Keke Li Reply-To: keke.li@amlogic.com From: Keke Li This driver mainly responsible for organizing MIPI data and sending raw data to ISP pipeline. Signed-off-by: Keke Li --- MAINTAINERS | 7 + drivers/media/platform/amlogic/Kconfig | 1 + drivers/media/platform/amlogic/Makefile | 1 + .../media/platform/amlogic/c3-mipi-adapter/Kconfig | 16 + .../platform/amlogic/c3-mipi-adapter/Makefile | 3 + .../amlogic/c3-mipi-adapter/c3-mipi-adap.c | 952 +++++++++++++++++++++ 6 files changed, 980 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 6077a0cb20c3..f99d0ea45815 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4889,6 +4889,13 @@ S: Maintained F: Documentation/devicetree/bindings/net/can/st,stm32-bxcan.yaml F: drivers/net/can/bxcan.c +C3 MIPI ADAPTER DRIVER FOR AMLOGIC +M: Keke Li +L: linux-media@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/media/amlogic,c3-mipi-adapter.yaml +F: drivers/media/platform/amlogic/c3-mipi-adapter/ + C3 MIPI CSI2 DRIVER FOR AMLOGIC M: Keke Li L: linux-media@vger.kernel.org diff --git a/drivers/media/platform/amlogic/Kconfig b/drivers/media/platform/amlogic/Kconfig index b7c2de14848b..df09717b28d0 100644 --- a/drivers/media/platform/amlogic/Kconfig +++ b/drivers/media/platform/amlogic/Kconfig @@ -2,5 +2,6 @@ comment "Amlogic media platform drivers" +source "drivers/media/platform/amlogic/c3-mipi-adapter/Kconfig" source "drivers/media/platform/amlogic/c3-mipi-csi2/Kconfig" source "drivers/media/platform/amlogic/meson-ge2d/Kconfig" diff --git a/drivers/media/platform/amlogic/Makefile b/drivers/media/platform/amlogic/Makefile index 4f571ce5d13e..b370154b090c 100644 --- a/drivers/media/platform/amlogic/Makefile +++ b/drivers/media/platform/amlogic/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only +obj-y += c3-mipi-adapter/ obj-y += c3-mipi-csi2/ obj-y += meson-ge2d/ diff --git a/drivers/media/platform/amlogic/c3-mipi-adapter/Kconfig b/drivers/media/platform/amlogic/c3-mipi-adapter/Kconfig new file mode 100644 index 000000000000..bf19059b3543 --- /dev/null +++ b/drivers/media/platform/amlogic/c3-mipi-adapter/Kconfig @@ -0,0 +1,16 @@ +# SPDX-License-Identifier: GPL-2.0-only + +config VIDEO_C3_MIPI_ADAPTER + tristate "Amlogic C3 MIPI adapter" + depends on ARCH_MESON || COMPILE_TEST + depends on VIDEO_DEV + depends on OF + select MEDIA_CONTROLLER + select V4L2_FWNODE + select VIDEO_V4L2_SUBDEV_API + help + Video4Linux2 driver for Amlogic C3 MIPI adapter. + C3 MIPI adapter mainly responsible for organizing + MIPI data and sending raw data to ISP pipeline. + + To compile this driver as a module choose m here. diff --git a/drivers/media/platform/amlogic/c3-mipi-adapter/Makefile b/drivers/media/platform/amlogic/c3-mipi-adapter/Makefile new file mode 100644 index 000000000000..216fc310c5b4 --- /dev/null +++ b/drivers/media/platform/amlogic/c3-mipi-adapter/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0-only + +obj-$(CONFIG_VIDEO_C3_MIPI_ADAPTER) += c3-mipi-adap.o diff --git a/drivers/media/platform/amlogic/c3-mipi-adapter/c3-mipi-adap.c b/drivers/media/platform/amlogic/c3-mipi-adapter/c3-mipi-adap.c new file mode 100644 index 000000000000..99fd9c15ea6f --- /dev/null +++ b/drivers/media/platform/amlogic/c3-mipi-adapter/c3-mipi-adap.c @@ -0,0 +1,952 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR MIT) +/* + * Copyright (C) 2024 Amlogic, Inc. All rights reserved + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +/* C3 adapter submodule definition */ +enum { + SUBMD_TOP, + SUBMD_FD, + SUBMD_RD, +}; + +#define ADAP_SUBMD_MASK GENMASK(17, 16) +#define ADAP_SUBMD_SHIFT 16 +#define ADAP_SUBMD(x) (((x) & (ADAP_SUBMD_MASK)) >> (ADAP_SUBMD_SHIFT)) +#define ADAP_REG_ADDR_MASK GENMASK(15, 0) +#define ADAP_REG_ADDR(x) ((x) & (ADAP_REG_ADDR_MASK)) +#define ADAP_REG_T(x) ((SUBMD_TOP << ADAP_SUBMD_SHIFT) | (x)) +#define ADAP_REG_F(x) ((SUBMD_FD << ADAP_SUBMD_SHIFT) | (x)) +#define ADAP_REG_R(x) ((SUBMD_RD << ADAP_SUBMD_SHIFT) | (x)) + +#define MIPI_ADAP_CLOCK_NUM_MAX 3 +#define MIPI_ADAP_SUBDEV_NAME "mipi-adapter" + +/* C3 MIPI adapter TOP register */ +#define MIPI_ADAPT_DE_CTRL0 ADAP_REG_T(0x40) +#define ADAP_DE_READ_BYPASS BIT(3) +#define ADAP_DE_WRITE_BYPASS BIT(7) + +/* C3 MIPI adapter FRONTEND register */ +#define CSI2_CLK_RESET ADAP_REG_F(0x00) +#define ADAP_FD_APPLY_RESET BIT(0) +#define ADAP_FD_ENABLE BIT(1) + +#define CSI2_GEN_CTRL0 ADAP_REG_F(0x04) +#define ADAP_FD_VIRTUAL_CHN0_EN BIT(0) +#define ADAP_FD_VIRTUAL_CHN1_EN BIT(1) +#define ADAP_FD_VIRTUAL_CHN2_EN BIT(2) +#define ADAP_FD_VIRTUAL_CHN3_EN BIT(3) +#define ADAP_FD_ENABLE_PACKETS GENMASK(20, 16) +#define ADAP_FD_ENABLE_RAW BIT(16) + +#define CSI2_X_START_END_ISP ADAP_REG_F(0x0c) +#define ADAP_FD_X_END_MASK GENMASK(31, 16) +#define ADAP_FD_X_END_SHIFT 16 +#define ADAP_FD_X_END(x) ((x) - 1) + +#define CSI2_Y_START_END_ISP ADAP_REG_F(0x10) +#define ADAP_FD_Y_END_MASK GENMASK(31, 16) +#define ADAP_FD_Y_END_SHIFT 16 +#define ADAP_FD_Y_END(x) ((x) - 1) + +#define CSI2_VC_MODE ADAP_REG_F(0x1c) +#define ADAP_FD_VS_SEL_VC_MASK GENMASK(19, 16) +#define ADAP_FD_VS_DIRECT_PATH BIT(16) +#define ADAP_FD_HS_SEL_VC_MASK GENMASK(23, 20) +#define ADAP_FD_HS_DIRECT_PATH BIT(20) + +/* C3 MIPI adapter READER register */ +#define MIPI_ADAPT_DDR_RD0_CNTL0 ADAP_REG_R(0x00) +#define ADAP_RD0_MODULE_ENABLE BIT(0) +#define ADAP_RD0_LINE_STRIDE_MASK GENMASK(13, 4) +#define ADAP_RD0_LINE_STRIDE_SHIFT 4 +#define ADAP_RD0_SAMPLE_SEL_MASK GENMASK(27, 26) +#define ADAP_RD0_DATA_IN_VSYNC BIT(26) +#define ADAP_RD0_BURST_TYPE_MASK GENMASK(29, 28) +#define ADAP_RD0_BURST_TYPE_SHIFT 28 +#define ADAP_RD0_BURST_TYPE_INRC8 3 +#define ADAP_RD0_FRAME_RD_START BIT(31) + +#define MIPI_ADAPT_DDR_RD0_CNTL1 ADAP_REG_R(0x04) +#define ADAP_RD0_LINE_SIZE_MASK GENMASK(9, 0) +#define ADAP_RD0_LINE_NUM_MASK GENMASK(28, 16) +#define ADAP_RD0_LINE_NUM_SHIFT 16 + +#define MIPI_ADAPT_PIXEL0_CNTL0 ADAP_REG_R(0x80) +#define ADAP_PIXEL0_WORK_MODE_MASK GENMASK(17, 16) +#define ADAP_PIXEL0_DIRECT_PATH BIT(16) +#define ADAP_PIXEL0_DATA_TYPE_MASK GENMASK(25, 20) +#define ADAP_PIXEL0_DATA_TYPE_SHIFT 20 +#define ADAP_PIXEL0_DATA_TYPE_10BITS 0x2b +#define ADAP_PIXEL0_DATA_TYPE_12BITS 0x2c +#define ADAP_PIXEL0_START_ENABLE BIT(31) + +#define MIPI_ADAPT_PIXEL0_CNTL1 ADAP_REG_R(0x84) +#define ADAP_PIXEL0_X_END_MASK GENMASK(15, 0) +#define ADAP_PIXEL0_X_END(x) ((x) - 1) + +#define MIPI_ADAPT_PIXEL0_CNTL2 ADAP_REG_R(0x88) +#define ADAP_PIXEL0_FIFO_SIZE_MASK GENMASK(9, 0) +#define ADAP_PIXEL0_PIXEL_NUM_MASK GENMASK(27, 15) +#define ADAP_PIXEL0_PIXEL_NUM_SHIFT 15 + +#define MIPI_ADAPT_ALIG_CNTL0 ADAP_REG_R(0x100) +#define ADAP_ALIG_V_TOTAL_NUM_MASK GENMASK(15, 0) +/* Need to add a default blank */ +#define ADAP_ALIG_V_TOTAL_NUM(x) ((x) + 64) +#define ADAP_ALIG_H_TOTAL_NUM_MASK GENMASK(31, 16) +#define ADAP_ALIG_H_TOTAL_NUM_SHIFT 16 +/* Need to add a default blank */ +#define ADAP_ALIG_H_TOTAL_NUM(x) ((x) + 64) + +#define MIPI_ADAPT_ALIG_CNTL1 ADAP_REG_R(0x104) +#define ADAP_ALIG_HPE_NUM_MASK GENMASK(31, 16) +#define ADAP_ALIG_HPE_NUM_SHIFT 16 + +#define MIPI_ADAPT_ALIG_CNTL2 ADAP_REG_R(0x108) +#define ADAP_ALIG_VPE_NUM_MASK GENMASK(31, 16) +#define ADAP_ALIG_VPE_NUM_SHIFT 16 + +#define MIPI_ADAPT_ALIG_CNTL3 ADAP_REG_R(0x10c) +#define ADAP_ALIG_FRM_ST_PIXEL_MASK GENMASK(15, 0) + +#define MIPI_ADAPT_ALIG_CNTL6 ADAP_REG_R(0x118) +#define ADAP_ALIG_LANE0_ENABLE BIT(0) +#define ADAP_ALIG_DATA_MODE0_MASK BIT(4) +#define ADAP_ALIG_DIRECT_MODE BIT(4) +#define ADAP_ALIG_VDATA0_ENABLE BIT(12) +#define ADAP_ALIG_VDATA1_ENABLE BIT(13) +#define ADAP_ALIG_VDATA2_ENABLE BIT(14) +#define ADAP_ALIG_VDATA3_ENABLE BIT(15) + +#define MIPI_ADAPT_ALIG_CNTL8 ADAP_REG_R(0x120) +#define ADAP_ALIG_FRAME_CONTINUE BIT(5) +#define ADAP_ALIG_EXC_MASK_DIS BIT(12) +#define ADAP_ALIG_START_ENABLE BIT(31) + +#define MIPI_ADAP_MAX_WIDTH 2888 +#define MIPI_ADAP_MIN_WIDTH 160 +#define MIPI_ADAP_MAX_HEIGHT 2240 +#define MIPI_ADAP_MIN_HEIGHT 120 +#define MIPI_ADAP_DEFAULT_WIDTH 1920 +#define MIPI_ADAP_DEFAULT_HEIGHT 1080 +#define MIPI_ADAP_DEFAULT_FMT MEDIA_BUS_FMT_SRGGB10_1X10 + +/* C3 MIPI adapter pad list */ +enum { + MIPI_ADAP_PAD_SINK, + MIPI_ADAP_PAD_SRC, + MIPI_ADAP_PAD_MAX +}; + +/* + * struct adap_info - mipi adapter information + * + * @clock: array of mipi adapter clock names + * @clock_rate: array of mipi adapter clock rate + * @clock_num: actual clock number + */ +struct adap_info { + char *clock[MIPI_ADAP_CLOCK_NUM_MAX]; + u32 clock_rate[MIPI_ADAP_CLOCK_NUM_MAX]; + u32 clock_num; +}; + +/** + * struct adap_device - mipi adapter platform device + * + * @dev: pointer to the struct device + * @top: mipi adapter top register address + * @fd: mipi adapter frontend register address + * @rd: mipi adapter reader register address + * @clock: array of MIPI adapter clocks + * @sd: mipi adapter sub-device + * @pads: mipi adapter sub-device pads + * @notifier: notifier to register on the v4l2-async API + * @format: save sub-device format + * @src_sd: source sub-device + * @src_sd_pad: source sub-device pad + * @lock: protect mipi adapter device + * @info: version-specific MIPI adapter information + */ +struct adap_device { + struct device *dev; + void __iomem *top; + void __iomem *fd; + void __iomem *rd; + struct clk_bulk_data clock[MIPI_ADAP_CLOCK_NUM_MAX]; + + struct v4l2_subdev sd; + struct media_pad pads[MIPI_ADAP_PAD_MAX]; + struct v4l2_async_notifier notifier; + struct v4l2_subdev_format format; + struct v4l2_subdev *src_sd; + + u16 src_sd_pad; + struct mutex lock; /* Protect adapter device */ + const struct adap_info *info; +}; + +/* Format helpers */ + +struct adap_pix_format { + u32 code; + u8 width; +}; + +static const struct adap_pix_format c3_mipi_adap_formats[] = { + { MEDIA_BUS_FMT_SBGGR10_1X10, 10 }, + { MEDIA_BUS_FMT_SGBRG10_1X10, 10 }, + { MEDIA_BUS_FMT_SGRBG10_1X10, 10 }, + { MEDIA_BUS_FMT_SRGGB10_1X10, 10 }, + { MEDIA_BUS_FMT_SBGGR12_1X12, 12 }, + { MEDIA_BUS_FMT_SGBRG12_1X12, 12 }, + { MEDIA_BUS_FMT_SGRBG12_1X12, 12 }, + { MEDIA_BUS_FMT_SRGGB12_1X12, 12 }, +}; + +static const struct adap_pix_format +*c3_mipi_adap_find_format(u32 code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(c3_mipi_adap_formats); i++) + if (code == c3_mipi_adap_formats[i].code) + return &c3_mipi_adap_formats[i]; + + return NULL; +} + +/* Hardware configuration */ + +static int c3_mipi_adap_update_bits(struct adap_device *adap, u32 reg, + u32 mask, u32 val) +{ + void __iomem *addr; + u32 orig, tmp; + + switch (ADAP_SUBMD(reg)) { + case SUBMD_TOP: + addr = adap->top + ADAP_REG_ADDR(reg); + break; + case SUBMD_FD: + addr = adap->fd + ADAP_REG_ADDR(reg); + break; + case SUBMD_RD: + addr = adap->rd + ADAP_REG_ADDR(reg); + break; + default: + return -EINVAL; + } + + orig = readl(addr); + tmp = orig & ~mask; + tmp |= val & mask; + + if (tmp != orig) + writel(tmp, addr); + + return 0; +} + +/* Configure adapter top sub module */ +static void c3_mipi_adap_cfg_top(struct adap_device *adap) +{ + /* Bypass decompress */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DE_CTRL0, + ADAP_DE_READ_BYPASS, ADAP_DE_READ_BYPASS); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DE_CTRL0, + ADAP_DE_WRITE_BYPASS, ADAP_DE_WRITE_BYPASS); +} + +/* Configure adapter frontend sub module */ +static void c3_mipi_adap_cfg_frontend(struct adap_device *adap, + struct v4l2_mbus_framefmt *fmt) +{ + /* The default value of BIT_0 is 1, so need release reset firstly. */ + c3_mipi_adap_update_bits(adap, CSI2_CLK_RESET, ADAP_FD_APPLY_RESET, 0); + + c3_mipi_adap_update_bits(adap, CSI2_X_START_END_ISP, + ADAP_FD_X_END_MASK, + ADAP_FD_X_END(fmt->width) << ADAP_FD_X_END_SHIFT); + c3_mipi_adap_update_bits(adap, CSI2_Y_START_END_ISP, + ADAP_FD_Y_END_MASK, + ADAP_FD_Y_END(fmt->height) << ADAP_FD_Y_END_SHIFT); + + /* Select VS and HS signal to direct path */ + c3_mipi_adap_update_bits(adap, CSI2_VC_MODE, + ADAP_FD_VS_SEL_VC_MASK, + ADAP_FD_VS_DIRECT_PATH); + c3_mipi_adap_update_bits(adap, CSI2_VC_MODE, + ADAP_FD_HS_SEL_VC_MASK, + ADAP_FD_HS_DIRECT_PATH); + + /* Enable to receive RAW image */ + c3_mipi_adap_update_bits(adap, CSI2_GEN_CTRL0, + ADAP_FD_ENABLE_PACKETS, + ADAP_FD_ENABLE_RAW); + + /* Enable virtual channel 0~3 */ + c3_mipi_adap_update_bits(adap, CSI2_GEN_CTRL0, + ADAP_FD_VIRTUAL_CHN0_EN, + ADAP_FD_VIRTUAL_CHN0_EN); + c3_mipi_adap_update_bits(adap, CSI2_GEN_CTRL0, + ADAP_FD_VIRTUAL_CHN1_EN, + ADAP_FD_VIRTUAL_CHN1_EN); + c3_mipi_adap_update_bits(adap, CSI2_GEN_CTRL0, + ADAP_FD_VIRTUAL_CHN2_EN, + ADAP_FD_VIRTUAL_CHN2_EN); + c3_mipi_adap_update_bits(adap, CSI2_GEN_CTRL0, + ADAP_FD_VIRTUAL_CHN3_EN, + ADAP_FD_VIRTUAL_CHN3_EN); +} + +/* Configure adapter reader sub module */ +static void c3_mipi_adap_cfg_reader(struct adap_device *adap, + struct v4l2_mbus_framefmt *fmt) +{ + const struct adap_pix_format *pix_format; + u32 line_size; + u8 data_type; + + /* Data size for a line, unit: 128 bits */ + pix_format = c3_mipi_adap_find_format(fmt->code); + line_size = fmt->width * pix_format->width; + line_size = DIV_ROUND_UP(line_size, 128); + + if (pix_format->width == 10) { + data_type = ADAP_PIXEL0_DATA_TYPE_10BITS; + } else if (pix_format->width == 12) { + data_type = ADAP_PIXEL0_DATA_TYPE_12BITS; + } else { + dev_err(adap->dev, "Invalid raw format width: %u\n", pix_format->width); + return; + } + + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DDR_RD0_CNTL1, + ADAP_RD0_LINE_SIZE_MASK, line_size); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DDR_RD0_CNTL1, + ADAP_RD0_LINE_NUM_MASK, + fmt->height << ADAP_RD0_LINE_NUM_SHIFT); + + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DDR_RD0_CNTL0, + ADAP_RD0_MODULE_ENABLE, + ADAP_RD0_MODULE_ENABLE); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DDR_RD0_CNTL0, + ADAP_RD0_LINE_STRIDE_MASK, + line_size << ADAP_RD0_LINE_STRIDE_SHIFT); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DDR_RD0_CNTL0, + ADAP_RD0_SAMPLE_SEL_MASK, + ADAP_RD0_DATA_IN_VSYNC); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_DDR_RD0_CNTL0, + ADAP_RD0_BURST_TYPE_MASK, + ADAP_RD0_BURST_TYPE_INRC8 << ADAP_RD0_BURST_TYPE_SHIFT); + + /* Set data type and work mode */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_PIXEL0_CNTL0, + ADAP_PIXEL0_WORK_MODE_MASK, + ADAP_PIXEL0_DIRECT_PATH); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_PIXEL0_CNTL0, + ADAP_PIXEL0_DATA_TYPE_MASK, + data_type << ADAP_PIXEL0_DATA_TYPE_SHIFT); + + /* Set pixel end number */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_PIXEL0_CNTL1, + ADAP_PIXEL0_X_END_MASK, + ADAP_PIXEL0_X_END(fmt->width)); + + /* Set line pixel number and reader fifo size */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_PIXEL0_CNTL2, + ADAP_PIXEL0_FIFO_SIZE_MASK, line_size); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_PIXEL0_CNTL2, + ADAP_PIXEL0_PIXEL_NUM_MASK, + fmt->width << ADAP_PIXEL0_PIXEL_NUM_SHIFT); + + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL0, + ADAP_ALIG_V_TOTAL_NUM_MASK, + ADAP_ALIG_V_TOTAL_NUM(fmt->width)); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL0, + ADAP_ALIG_H_TOTAL_NUM_MASK, + ADAP_ALIG_H_TOTAL_NUM(fmt->height) + << ADAP_ALIG_H_TOTAL_NUM_SHIFT); + + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL1, + ADAP_ALIG_HPE_NUM_MASK, + fmt->width << ADAP_ALIG_HPE_NUM_SHIFT); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL2, + ADAP_ALIG_VPE_NUM_MASK, + fmt->height << ADAP_ALIG_VPE_NUM_SHIFT); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL3, + ADAP_ALIG_FRM_ST_PIXEL_MASK, fmt->width); + + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL6, + ADAP_ALIG_LANE0_ENABLE, + ADAP_ALIG_LANE0_ENABLE); + + /* Select direct mode */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL6, + ADAP_ALIG_DATA_MODE0_MASK, + ADAP_ALIG_DIRECT_MODE); + + /* Enable vdata 0~3 */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL6, + ADAP_ALIG_VDATA0_ENABLE, + ADAP_ALIG_VDATA0_ENABLE); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL6, + ADAP_ALIG_VDATA1_ENABLE, + ADAP_ALIG_VDATA1_ENABLE); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL6, + ADAP_ALIG_VDATA2_ENABLE, + ADAP_ALIG_VDATA2_ENABLE); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL6, + ADAP_ALIG_VDATA3_ENABLE, + ADAP_ALIG_VDATA2_ENABLE); + + /* continue mode and disable hold counter */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL8, + ADAP_ALIG_FRAME_CONTINUE, + ADAP_ALIG_FRAME_CONTINUE); + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL8, + ADAP_ALIG_EXC_MASK_DIS, + ADAP_ALIG_EXC_MASK_DIS); +} + +static void c3_mipi_adap_start_stream(struct adap_device *adap) +{ + /* Enable to start and will auto clear to 0 */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_ALIG_CNTL8, + ADAP_ALIG_START_ENABLE, + ADAP_ALIG_START_ENABLE); + + /* Enable to start and will auto clear to 0 */ + c3_mipi_adap_update_bits(adap, MIPI_ADAPT_PIXEL0_CNTL0, + ADAP_PIXEL0_START_ENABLE, + ADAP_PIXEL0_START_ENABLE); + + /* Enable frontend */ + c3_mipi_adap_update_bits(adap, CSI2_CLK_RESET, + ADAP_FD_ENABLE, ADAP_FD_ENABLE); +} + +static void c3_mipi_adap_cfg_format(struct adap_device *adap) +{ + struct v4l2_subdev_format *format = &adap->format; + + c3_mipi_adap_cfg_top(adap); + c3_mipi_adap_cfg_frontend(adap, &format->format); + c3_mipi_adap_cfg_reader(adap, &format->format); +} + +/* V4L2 subdev operations */ + +static int c3_mipi_adap_enable_streams(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + u32 pad, u64 streams_mask) +{ + struct adap_device *adap = v4l2_get_subdevdata(sd); + u64 sink_streams; + int ret; + + guard(mutex)(&adap->lock); + + pm_runtime_resume_and_get(adap->dev); + + c3_mipi_adap_cfg_format(adap); + c3_mipi_adap_start_stream(adap); + + sink_streams = v4l2_subdev_state_xlate_streams(state, pad, + MIPI_ADAP_PAD_SINK, + &streams_mask); + ret = v4l2_subdev_enable_streams(adap->src_sd, + adap->src_sd_pad, + sink_streams); + if (ret) { + pm_runtime_put(adap->dev); + return ret; + } + + return 0; +} + +static int c3_mipi_adap_disable_streams(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + u32 pad, u64 streams_mask) +{ + struct adap_device *adap = v4l2_get_subdevdata(sd); + u64 sink_streams; + int ret; + + guard(mutex)(&adap->lock); + + sink_streams = v4l2_subdev_state_xlate_streams(state, pad, + MIPI_ADAP_PAD_SINK, + &streams_mask); + ret = v4l2_subdev_disable_streams(adap->src_sd, + adap->src_sd_pad, + sink_streams); + if (ret) + dev_err(adap->dev, "Failed to disable %s\n", adap->src_sd->name); + + pm_runtime_put(adap->dev); + + return ret; +} + +static int c3_mipi_adap_cfg_routing(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_krouting *routing) +{ + static const struct v4l2_mbus_framefmt format = { + .width = MIPI_ADAP_DEFAULT_WIDTH, + .height = MIPI_ADAP_DEFAULT_HEIGHT, + .code = MIPI_ADAP_DEFAULT_FMT, + .field = V4L2_FIELD_NONE, + .colorspace = V4L2_COLORSPACE_RAW, + .ycbcr_enc = V4L2_YCBCR_ENC_601, + .quantization = V4L2_QUANTIZATION_LIM_RANGE, + .xfer_func = V4L2_XFER_FUNC_NONE, + }; + int ret; + + ret = v4l2_subdev_routing_validate(sd, routing, + V4L2_SUBDEV_ROUTING_ONLY_1_TO_1); + if (ret) + return ret; + + ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing, &format); + if (ret) + return ret; + + return 0; +} + +static int c3_mipi_adap_init_routing(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state) +{ + struct v4l2_subdev_route routes; + struct v4l2_subdev_krouting routing; + + routes.sink_pad = MIPI_ADAP_PAD_SINK; + routes.sink_stream = 0; + routes.source_pad = MIPI_ADAP_PAD_SRC; + routes.source_stream = 0; + routes.flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE; + + routing.num_routes = 1; + routing.routes = &routes; + + return c3_mipi_adap_cfg_routing(sd, state, &routing); +} + +static int c3_mipi_adap_set_routing(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + enum v4l2_subdev_format_whence which, + struct v4l2_subdev_krouting *routing) +{ + bool is_streaming = v4l2_subdev_is_streaming(sd); + + if (which == V4L2_SUBDEV_FORMAT_ACTIVE && is_streaming) + return -EBUSY; + + return c3_mipi_adap_cfg_routing(sd, state, routing); +} + +static int c3_mipi_adap_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_mbus_code_enum *code) +{ + switch (code->pad) { + case MIPI_ADAP_PAD_SINK: + if (code->index >= ARRAY_SIZE(c3_mipi_adap_formats)) + return -EINVAL; + + code->code = c3_mipi_adap_formats[code->index].code; + break; + case MIPI_ADAP_PAD_SRC: + struct v4l2_mbus_framefmt *fmt; + + if (code->index > 0) + return -EINVAL; + + fmt = v4l2_subdev_state_get_format(state, code->pad); + code->code = fmt->code; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int c3_mipi_adap_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_format *format) +{ + struct adap_device *adap = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *fmt; + const struct adap_pix_format *pix_format; + + if (format->pad == MIPI_ADAP_PAD_SRC) + return v4l2_subdev_get_fmt(sd, state, format); + + if (format->pad != MIPI_ADAP_PAD_SINK) + return -EINVAL; + + pix_format = c3_mipi_adap_find_format(format->format.code); + if (!pix_format) + pix_format = &c3_mipi_adap_formats[0]; + + fmt = v4l2_subdev_state_get_format(state, format->pad); + fmt->code = pix_format->code; + fmt->width = clamp_t(u32, format->format.width, + MIPI_ADAP_MIN_WIDTH, MIPI_ADAP_MAX_WIDTH); + fmt->height = clamp_t(u32, format->format.height, + MIPI_ADAP_MIN_HEIGHT, MIPI_ADAP_MAX_HEIGHT); + + format->format = *fmt; + + /* Synchronize the format to source pad */ + fmt = v4l2_subdev_state_get_format(state, MIPI_ADAP_PAD_SRC); + *fmt = format->format; + + adap->format = *format; + + return 0; +} + +static int c3_mipi_adap_init_state(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state) +{ + struct v4l2_mbus_framefmt *sink_fmt; + struct v4l2_mbus_framefmt *src_fmt; + + sink_fmt = v4l2_subdev_state_get_format(state, MIPI_ADAP_PAD_SINK); + src_fmt = v4l2_subdev_state_get_format(state, MIPI_ADAP_PAD_SRC); + + sink_fmt->width = MIPI_ADAP_DEFAULT_WIDTH; + sink_fmt->height = MIPI_ADAP_DEFAULT_HEIGHT; + sink_fmt->field = V4L2_FIELD_NONE; + sink_fmt->code = MIPI_ADAP_DEFAULT_FMT; + sink_fmt->colorspace = V4L2_COLORSPACE_RAW; + sink_fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(sink_fmt->colorspace); + sink_fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(sink_fmt->colorspace); + sink_fmt->quantization = + V4L2_MAP_QUANTIZATION_DEFAULT(false, sink_fmt->colorspace, + sink_fmt->ycbcr_enc); + *src_fmt = *sink_fmt; + + return c3_mipi_adap_init_routing(sd, state); +} + +static const struct v4l2_subdev_pad_ops c3_mipi_adap_pad_ops = { + .enum_mbus_code = c3_mipi_adap_enum_mbus_code, + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = c3_mipi_adap_set_fmt, + .set_routing = c3_mipi_adap_set_routing, + .enable_streams = c3_mipi_adap_enable_streams, + .disable_streams = c3_mipi_adap_disable_streams, +}; + +static const struct v4l2_subdev_ops c3_mipi_adap_subdev_ops = { + .pad = &c3_mipi_adap_pad_ops, +}; + +static const struct v4l2_subdev_internal_ops c3_mipi_adap_internal_ops = { + .init_state = c3_mipi_adap_init_state, +}; + +/* Media entity operations */ +static const struct media_entity_operations c3_mipi_adap_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +/* PM runtime */ + +static int __maybe_unused c3_mipi_adap_runtime_suspend(struct device *dev) +{ + struct adap_device *adap = dev_get_drvdata(dev); + + clk_bulk_disable_unprepare(adap->info->clock_num, adap->clock); + + return 0; +} + +static int __maybe_unused c3_mipi_adap_runtime_resume(struct device *dev) +{ + struct adap_device *adap = dev_get_drvdata(dev); + + return clk_bulk_prepare_enable(adap->info->clock_num, adap->clock); +} + +static const struct dev_pm_ops c3_mipi_adap_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(c3_mipi_adap_runtime_suspend, + c3_mipi_adap_runtime_resume, NULL) +}; + +/* Probe/remove & platform driver */ + +static int c3_mipi_adap_subdev_init(struct adap_device *adap) +{ + struct v4l2_subdev *sd = &adap->sd; + int ret; + + v4l2_subdev_init(sd, &c3_mipi_adap_subdev_ops); + sd->owner = THIS_MODULE; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + sd->internal_ops = &c3_mipi_adap_internal_ops; + snprintf(sd->name, sizeof(sd->name), "%s", MIPI_ADAP_SUBDEV_NAME); + + sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; + sd->entity.ops = &c3_mipi_adap_entity_ops; + + sd->dev = adap->dev; + v4l2_set_subdevdata(sd, adap); + + adap->pads[MIPI_ADAP_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + adap->pads[MIPI_ADAP_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&sd->entity, MIPI_ADAP_PAD_MAX, adap->pads); + if (ret) + return ret; + + ret = v4l2_subdev_init_finalize(sd); + if (ret) { + media_entity_cleanup(&sd->entity); + return ret; + } + + return 0; +} + +static void c3_mipi_adap_subdev_deinit(struct adap_device *adap) +{ + v4l2_subdev_cleanup(&adap->sd); + media_entity_cleanup(&adap->sd.entity); +} + +/* Subdev notifier register */ +static int c3_mipi_adap_notify_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_connection *asc) +{ + struct adap_device *adap = v4l2_get_subdevdata(notifier->sd); + struct media_pad *sink = &adap->sd.entity.pads[MIPI_ADAP_PAD_SINK]; + int ret; + + ret = media_entity_get_fwnode_pad(&sd->entity, + sd->fwnode, MEDIA_PAD_FL_SOURCE); + if (ret < 0) { + dev_err(adap->dev, "Failed to find pad for %s\n", sd->name); + return ret; + } + + adap->src_sd = sd; + adap->src_sd_pad = ret; + + return v4l2_create_fwnode_links_to_pad(sd, sink, MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); +} + +static const struct v4l2_async_notifier_operations c3_mipi_adap_notify_ops = { + .bound = c3_mipi_adap_notify_bound, +}; + +static int c3_mipi_adap_async_register(struct adap_device *adap) +{ + struct v4l2_async_connection *asc; + struct fwnode_handle *ep; + int ret; + + v4l2_async_subdev_nf_init(&adap->notifier, &adap->sd); + + ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(adap->dev), 0, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!ep) + return -ENOTCONN; + + asc = v4l2_async_nf_add_fwnode_remote(&adap->notifier, ep, + struct v4l2_async_connection); + if (IS_ERR(asc)) { + ret = PTR_ERR(asc); + goto err_put_handle; + } + + adap->notifier.ops = &c3_mipi_adap_notify_ops; + ret = v4l2_async_nf_register(&adap->notifier); + if (ret) + goto err_cleanup_nf; + + ret = v4l2_async_register_subdev(&adap->sd); + if (ret) + goto err_unregister_nf; + + fwnode_handle_put(ep); + + return 0; + +err_unregister_nf: + v4l2_async_nf_unregister(&adap->notifier); +err_cleanup_nf: + v4l2_async_nf_cleanup(&adap->notifier); +err_put_handle: + fwnode_handle_put(ep); + return ret; +} + +static void c3_mipi_adap_async_unregister(struct adap_device *adap) +{ + v4l2_async_unregister_subdev(&adap->sd); + v4l2_async_nf_unregister(&adap->notifier); + v4l2_async_nf_cleanup(&adap->notifier); +} + +static int c3_mipi_adap_ioremap_resource(struct adap_device *adap) +{ + struct device *dev = adap->dev; + struct platform_device *pdev = to_platform_device(dev); + + adap->top = devm_platform_ioremap_resource_byname(pdev, "adap_top"); + if (IS_ERR(adap->top)) + return PTR_ERR(adap->top); + + adap->fd = devm_platform_ioremap_resource_byname(pdev, "adap_fd"); + if (IS_ERR(adap->fd)) + return PTR_ERR(adap->fd); + + adap->rd = devm_platform_ioremap_resource_byname(pdev, "adap_rd"); + if (IS_ERR(adap->rd)) + return PTR_ERR(adap->rd); + + return 0; +} + +static int c3_mipi_adap_configure_clocks(struct adap_device *adap) +{ + const struct adap_info *info = adap->info; + int ret; + u32 i; + + for (i = 0; i < info->clock_num; i++) + adap->clock[i].id = info->clock[i]; + + ret = devm_clk_bulk_get(adap->dev, info->clock_num, adap->clock); + if (ret) + return ret; + + for (i = 0; i < info->clock_num; i++) { + if (!info->clock_rate[i]) + continue; + ret = clk_set_rate(adap->clock[i].clk, info->clock_rate[i]); + if (ret) { + dev_err(adap->dev, "Failed to set %s rate %u\n", info->clock[i], + info->clock_rate[i]); + } + } + + return 0; +} + +static int c3_mipi_adap_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct adap_device *adap; + int ret; + + adap = devm_kzalloc(dev, sizeof(*adap), GFP_KERNEL); + if (!adap) + return -ENOMEM; + + adap->info = of_device_get_match_data(dev); + adap->dev = dev; + + ret = c3_mipi_adap_ioremap_resource(adap); + if (ret) { + dev_err(dev, "Failed to ioremap resource: %d\n", ret); + return ret; + } + + ret = c3_mipi_adap_configure_clocks(adap); + if (ret) { + dev_err(dev, "Failed to configure clocks: %d\n", ret); + return ret; + } + + platform_set_drvdata(pdev, adap); + + mutex_init(&adap->lock); + pm_runtime_enable(dev); + + ret = c3_mipi_adap_subdev_init(adap); + if (ret < 0) + goto err_disable_runtime_pm; + + ret = c3_mipi_adap_async_register(adap); + if (ret < 0) + goto err_deinit_subdev; + + return 0; + +err_deinit_subdev: + c3_mipi_adap_subdev_deinit(adap); +err_disable_runtime_pm: + pm_runtime_disable(dev); + mutex_destroy(&adap->lock); + return ret; +}; + +static void c3_mipi_adap_remove(struct platform_device *pdev) +{ + struct adap_device *adap = platform_get_drvdata(pdev); + + c3_mipi_adap_async_unregister(adap); + c3_mipi_adap_subdev_deinit(adap); + + pm_runtime_disable(&pdev->dev); + mutex_destroy(&adap->lock); +}; + +static const struct adap_info c3_mipi_adap_info = { + .clock = {"vapb", "adap"}, + .clock_rate = {0, 400000000}, + .clock_num = 2 +}; + +static const struct of_device_id c3_mipi_adap_of_match[] = { + { .compatible = "amlogic,c3-mipi-adapter", + .data = &c3_mipi_adap_info }, + { }, +}; +MODULE_DEVICE_TABLE(of, c3_mipi_adap_of_match); + +static struct platform_driver c3_mipi_adap_driver = { + .probe = c3_mipi_adap_probe, + .remove_new = c3_mipi_adap_remove, + .driver = { + .name = "c3-mipi-adapter", + .of_match_table = c3_mipi_adap_of_match, + .pm = &c3_mipi_adap_pm_ops, + }, +}; + +module_platform_driver(c3_mipi_adap_driver); + +MODULE_AUTHOR("Keke Li "); +MODULE_DESCRIPTION("Amlogic C3 MIPI adapter"); +MODULE_LICENSE("GPL");