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Message-ID: <e8430e0c-d6ba-4ef4-a495-cbc2f5c951e7@amlogic.com>
Date: Wed, 6 Nov 2024 13:32:58 +0800
From: Keke Li <keke.li@...ogic.com>
To: Jacopo Mondi <jacopo.mondi@...asonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring
<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, linux-media@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
kieran.bingham@...asonboard.com, laurent.pinchart@...asonboard.com,
dan.scally@...asonboard.com
Subject: Re: [PATCH v3 4/9] media: platform: Add c3 mipi adapter driver
Hi Jacopo
Thanks very much for your reply.
On 2024/11/5 19:24, Jacopo Mondi wrote:
> [You don't often get email from jacopo.mondi@...asonboard.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>
> [ EXTERNAL EMAIL ]
>
> Hi Keke
>
> On Wed, Sep 18, 2024 at 02:07:15PM +0800, Keke Li via B4 Relay wrote:
>> From: Keke Li <keke.li@...ogic.com>
>>
>> This driver mainly responsible for organizing
>> MIPI data and sending raw data to ISP pipeline.
> A few questions on the design of this subdevice.
>
> In my understanding the adapter provides several functionalities:
>
> - Data alignement to match the ISP size constraints
> - Read from DDR memory or from the CSI-2 RX (direct path)
> - Write to DDR memory or to the ISP (direct path)
> - Split data streams to DDR or direct path based on CSI-2 Virtual
> Channel and Data type.
Yes, you are right.
> As I understand the current implementation only supports direct-path
> to ISP of data sent on VC#0.
Read image from DDR and wirte image to DDR are used in WDR mode.
Due to the lack of WDR requirement, This driver only support direct-path.
> Do you plan to expand the adapter subdev with support for mulitple
> paths ? Is this why you are supporting already a routing table ?
If there is a demand in the future, I will support multiple paths.
But now I attend to only support one path and will drop the
set_routing() interface.
>> Reviewed-by: Daniel Scally <dan.scally@...asonboard.com>
>> Signed-off-by: Keke Li <keke.li@...ogic.com>
>> ---
>> 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 | 913 +++++++++++++++++++++
>> 6 files changed, 941 insertions(+)
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 9e75874a6e69..31168c05f304 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -1209,6 +1209,13 @@ F: Documentation/devicetree/bindings/perf/amlogic,g12-ddr-pmu.yaml
>> F: drivers/perf/amlogic/
>> F: include/soc/amlogic/
>>
>> +AMLOGIC MIPI ADAPTER DRIVER
>> +M: Keke Li <keke.li@...ogic.com>
>> +L: linux-media@...r.kernel.org
>> +S: Maintained
>> +F: Documentation/devicetree/bindings/media/amlogic,c3-mipi-adapter.yaml
>> +F: drivers/media/platform/amlogic/c3-mipi-adapter/
>> +
>> AMLOGIC MIPI CSI2 DRIVER
>> M: Keke Li <keke.li@...ogic.com>
>> L: linux-media@...r.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..b64eb417c2e2
>> --- /dev/null
>> +++ b/drivers/media/platform/amlogic/c3-mipi-adapter/c3-mipi-adap.c
>> @@ -0,0 +1,913 @@
>> +// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
>> +/*
>> + * Copyright (C) 2024 Amlogic, Inc. All rights reserved
>> + */
>> +
>> +#include <linux/cleanup.h>
>> +#include <linux/clk.h>
>> +#include <linux/device.h>
>> +#include <linux/module.h>
>> +#include <linux/mutex.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/pm_runtime.h>
>> +
>> +#include <media/v4l2-async.h>
>> +#include <media/v4l2-common.h>
>> +#include <media/v4l2-device.h>
>> +#include <media/v4l2-fwnode.h>
>> +#include <media/v4l2-mc.h>
>> +#include <media/v4l2-subdev.h>
>> +
>> +/* 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"
> I would add a "c3-" prefix
>
Will add "c3-" prefix
>> +
>> +/* 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
>> + *
>> + * @clocks: array of mipi adapter clock names
>> + * @clock_rates: array of mipi adapter clock rate
>> + * @clock_num: actual clock number
>> + */
>> +struct adap_info {
>> + char *clocks[MIPI_ADAP_CLOCK_NUM_MAX];
>> + u32 clock_rates[MIPI_ADAP_CLOCK_NUM_MAX];
>> + u32 clock_num;
>> +};
>> +
>> +/**
> Here as well you can drop one * from /**
Will drop one * from /**
>> + * 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
>> + * @clks: 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 clks[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 */
> Most comments on the csi2-rx patch apply to this one as well.
> In this case, you don't need locking for functions that receive a
> subdev_state
>
Will remove this lock.
>> + const struct adap_info *info;
>> +};
>> +
>> +/* Format helpers */
>> +
>> +struct adap_pix_format {
>> + u32 code;
>> + u8 width;
> I would call it bpp
Will replace width with bpp
>> +};
>> +
>> +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 void 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:
>> + dev_err(adap->dev, "Invalid sub-module: %lu\n", ADAP_SUBMD(reg));
>> + return;
>> + }
>> +
>> + orig = readl(addr);
>> + tmp = orig & ~mask;
>> + tmp |= val & mask;
>> +
>> + if (tmp != orig)
>> + writel(tmp, addr);
>> +}
>> +
>> +/* 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;
> You should use MIPI_CSI2_DT_RAW10 and MIPI_CSI2_DT_RAW12 from
> "include/media/mipi-csi2.h"
>
OK, Will use MIPI_CSI2_DT_RAW10 and MIPI_CSI2_DT_RAW12.
>> + } 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);
> I'm not sure I get this. I read this bit as "Enable reading from DDR"
> while I thought the adapter receives data directly from the CSI-2
> receiver
This place is a bit confusing.
I will check this issue and add explanation.
>> + 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);
> Ah maybe this setting "RAW from direct path" enables direct path from
> CSI-2 receiver
>
PIXEL0 is a sub module in adapter and should be configured.
>> + 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));
> What are the ISP alignment requirements ?
>
> #define ADAP_ALIG_V_TOTAL_NUM(x) ((x) + 64)
>
> Are you aligning or just adding 64 here ?
ISP hardware requires at least 40 v-blanks,
so here add 64 to ensure ISP can function properly.
>> + 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);
> For my education could you tell what these bit do ?
Will add explanation.
>> +
>> + /* 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);
>> +}
> Same comments as per the CSI-2 Rx, do you need to allow set routing
> when a single route in enabled and valid ?
>
Will drop the set_routing() interface.
>> +
>> +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_SINK)
>> + return v4l2_subdev_get_fmt(sd, state, format);
>> +
>> + 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;
> There is not need to store the format in the driver-specific
> structure. You use it c3_mipi_adap_cfg_format() called by
> c3_mipi_adap_enable_streams() which receives a subdev_state where the format
> is stored already.
>
> Thanks
> j
Will remove the adap->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->clks);
>> +
>> + 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->clks);
>> +}
>> +
>> +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, "top");
>> + if (IS_ERR(adap->top))
>> + return PTR_ERR(adap->top);
>> +
>> + adap->fd = devm_platform_ioremap_resource_byname(pdev, "fd");
>> + if (IS_ERR(adap->fd))
>> + return PTR_ERR(adap->fd);
>> +
>> + adap->rd = devm_platform_ioremap_resource_byname(pdev, "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->clks[i].id = info->clocks[i];
>> +
>> + ret = devm_clk_bulk_get(adap->dev, info->clock_num, adap->clks);
>> + if (ret)
>> + return ret;
>> +
>> + for (i = 0; i < info->clock_num; i++) {
>> + if (!info->clock_rates[i])
>> + continue;
>> + ret = clk_set_rate(adap->clks[i].clk, info->clock_rates[i]);
>> + if (ret) {
>> + dev_err(adap->dev, "Failed to set %s rate %u\n", info->clocks[i],
>> + info->clock_rates[i]);
>> + return ret;
>> + }
>> + }
>> +
>> + 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)
>> + return dev_err_probe(dev, ret, "Failed to ioremap resource\n");
>> +
>> + ret = c3_mipi_adap_configure_clocks(adap);
>> + if (ret)
>> + return dev_err_probe(dev, ret, "Failed to configure clocks\n");
>> +
>> + 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 = {
>> + .clocks = {"vapb", "isp0"},
>> + .clock_rates = {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 = 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 <keke.li@...ogic.com>");
>> +MODULE_DESCRIPTION("Amlogic C3 MIPI adapter");
>> +MODULE_LICENSE("GPL");
>>
>> --
>> 2.46.1
>>
>>
>>
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