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linux/drivers/media/i2c/imx334.c
Dan Carpenter 3a9619be0d media: i2c: imx334: uninitialized variable in imx334_update_exp_gain() 
The "ret" variable is not initialized on the success path.  Set it to
zero.

Fixes: 7b19b0fc8a ("media: i2c: imx334: Convert to CCI register access helpers")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-05-06 13:06:30 +02:00

1347 lines
36 KiB
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Sony imx334 sensor driver
*
* Copyright (C) 2021 Intel Corporation
*/
#include <linux/unaligned.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <media/v4l2-cci.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
/* Streaming Mode */
#define IMX334_REG_MODE_SELECT CCI_REG8(0x3000)
#define IMX334_MODE_STANDBY 0x01
#define IMX334_MODE_STREAMING 0x00
/* Lines per frame */
#define IMX334_REG_VMAX CCI_REG24_LE(0x3030)
#define IMX334_REG_HMAX CCI_REG16_LE(0x3034)
#define IMX334_REG_OPB_SIZE_V CCI_REG8(0x304c)
#define IMX334_REG_ADBIT CCI_REG8(0x3050)
#define IMX334_REG_MDBIT CCI_REG8(0x319d)
#define IMX334_REG_ADBIT1 CCI_REG16_LE(0x341c)
#define IMX334_REG_Y_OUT_SIZE CCI_REG16_LE(0x3308)
#define IMX334_REG_XVS_XHS_OUTSEL CCI_REG8(0x31a0)
#define IMX334_REG_XVS_XHS_DRV CCI_REG8(0x31a1)
/* Chip ID */
#define IMX334_REG_ID CCI_REG8(0x3044)
#define IMX334_ID 0x1e
/* Exposure control */
#define IMX334_REG_SHUTTER CCI_REG24_LE(0x3058)
#define IMX334_EXPOSURE_MIN 1
#define IMX334_EXPOSURE_OFFSET 5
#define IMX334_EXPOSURE_STEP 1
#define IMX334_EXPOSURE_DEFAULT 0x0648
#define IMX334_REG_LANEMODE CCI_REG8(0x3a01)
#define IMX334_CSI_4_LANE_MODE 3
#define IMX334_CSI_8_LANE_MODE 7
/* Window cropping Settings */
#define IMX334_REG_AREA3_ST_ADR_1 CCI_REG16_LE(0x3074)
#define IMX334_REG_AREA3_ST_ADR_2 CCI_REG16_LE(0x308e)
#define IMX334_REG_UNREAD_PARAM5 CCI_REG16_LE(0x30b6)
#define IMX334_REG_AREA3_WIDTH_1 CCI_REG16_LE(0x3076)
#define IMX334_REG_AREA3_WIDTH_2 CCI_REG16_LE(0x3090)
#define IMX334_REG_BLACK_OFSET_ADR CCI_REG16_LE(0x30c6)
#define IMX334_REG_UNRD_LINE_MAX CCI_REG16_LE(0x30ce)
#define IMX334_REG_UNREAD_ED_ADR CCI_REG16_LE(0x30d8)
#define IMX334_REG_UNREAD_PARAM6 CCI_REG16_LE(0x3116)
#define IMX334_REG_VREVERSE CCI_REG8(0x304f)
#define IMX334_REG_HREVERSE CCI_REG8(0x304e)
/* Binning Settings */
#define IMX334_REG_HADD_VADD CCI_REG8(0x3199)
#define IMX334_REG_VALID_EXPAND CCI_REG8(0x31dd)
#define IMX334_REG_TCYCLE CCI_REG8(0x3300)
/* Analog gain control */
#define IMX334_REG_AGAIN CCI_REG16_LE(0x30e8)
#define IMX334_AGAIN_MIN 0
#define IMX334_AGAIN_MAX 240
#define IMX334_AGAIN_STEP 1
#define IMX334_AGAIN_DEFAULT 0
/* Group hold register */
#define IMX334_REG_HOLD CCI_REG8(0x3001)
#define IMX334_REG_MASTER_MODE CCI_REG8(0x3002)
#define IMX334_REG_WINMODE CCI_REG8(0x3018)
#define IMX334_REG_HTRIMMING_START CCI_REG16_LE(0x302c)
#define IMX334_REG_HNUM CCI_REG16_LE(0x302e)
/* Input clock rate */
#define IMX334_INCLK_RATE 24000000
/* INCK Setting Register */
#define IMX334_REG_BCWAIT_TIME CCI_REG8(0x300c)
#define IMX334_REG_CPWAIT_TIME CCI_REG8(0x300d)
#define IMX334_REG_INCKSEL1 CCI_REG16_LE(0x314c)
#define IMX334_REG_INCKSEL2 CCI_REG8(0x315a)
#define IMX334_REG_INCKSEL3 CCI_REG8(0x3168)
#define IMX334_REG_INCKSEL4 CCI_REG8(0x316a)
#define IMX334_REG_SYS_MODE CCI_REG8(0x319e)
#define IMX334_REG_TCLKPOST CCI_REG16_LE(0x3a18)
#define IMX334_REG_TCLKPREPARE CCI_REG16_LE(0x3a1a)
#define IMX334_REG_TCLKTRAIL CCI_REG16_LE(0x3a1c)
#define IMX334_REG_TCLKZERO CCI_REG16_LE(0x3a1e)
#define IMX334_REG_THSPREPARE CCI_REG16_LE(0x3a20)
#define IMX334_REG_THSZERO CCI_REG16_LE(0x3a22)
#define IMX334_REG_THSTRAIL CCI_REG16_LE(0x3a24)
#define IMX334_REG_THSEXIT CCI_REG16_LE(0x3a26)
#define IMX334_REG_TPLX CCI_REG16_LE(0x3a28)
/* CSI2 HW configuration */
#define IMX334_LINK_FREQ_891M 891000000
#define IMX334_LINK_FREQ_445M 445500000
#define IMX334_NUM_DATA_LANES 4
#define IMX334_REG_MIN 0x00
#define IMX334_REG_MAX 0xfffff
/* Test Pattern Control */
#define IMX334_REG_TP CCI_REG8(0x329e)
#define IMX334_TP_COLOR_HBARS 0xa
#define IMX334_TP_COLOR_VBARS 0xb
#define IMX334_TPG_EN_DOUT CCI_REG8(0x329c)
#define IMX334_TP_ENABLE 0x1
#define IMX334_TP_DISABLE 0x0
#define IMX334_TPG_COLORW CCI_REG8(0x32a0)
#define IMX334_TPG_COLORW_120P 0x13
#define IMX334_TP_CLK_EN CCI_REG8(0x3148)
#define IMX334_TP_CLK_EN_VAL 0x10
#define IMX334_TP_CLK_DIS_VAL 0x0
#define IMX334_DIG_CLP_MODE CCI_REG8(0x3280)
/**
* struct imx334_reg_list - imx334 sensor register list
* @num_of_regs: Number of registers in the list
* @regs: Pointer to register list
*/
struct imx334_reg_list {
u32 num_of_regs;
const struct cci_reg_sequence *regs;
};
/**
* struct imx334_mode - imx334 sensor mode structure
* @width: Frame width
* @height: Frame height
* @hblank: Horizontal blanking in lines
* @vblank: Vertical blanking in lines
* @vblank_min: Minimal vertical blanking in lines
* @vblank_max: Maximum vertical blanking in lines
* @pclk: Sensor pixel clock
* @link_freq_idx: Link frequency index
* @reg_list: Register list for sensor mode
*/
struct imx334_mode {
u32 width;
u32 height;
u32 hblank;
u32 vblank;
u32 vblank_min;
u32 vblank_max;
u64 pclk;
u32 link_freq_idx;
struct imx334_reg_list reg_list;
};
/**
* struct imx334 - imx334 sensor device structure
* @dev: Pointer to generic device
* @cci: CCI register map
* @client: Pointer to i2c client
* @sd: V4L2 sub-device
* @pad: Media pad. Only one pad supported
* @reset_gpio: Sensor reset gpio
* @inclk: Sensor input clock
* @ctrl_handler: V4L2 control handler
* @link_freq_ctrl: Pointer to link frequency control
* @pclk_ctrl: Pointer to pixel clock control
* @hblank_ctrl: Pointer to horizontal blanking control
* @vblank_ctrl: Pointer to vertical blanking control
* @exp_ctrl: Pointer to exposure control
* @again_ctrl: Pointer to analog gain control
* @vblank: Vertical blanking in lines
* @cur_mode: Pointer to current selected sensor mode
* @link_freq_bitmap: Menu bitmap for link_freq_ctrl
* @cur_code: current selected format code
*/
struct imx334 {
struct device *dev;
struct regmap *cci;
struct i2c_client *client;
struct v4l2_subdev sd;
struct media_pad pad;
struct gpio_desc *reset_gpio;
struct clk *inclk;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *link_freq_ctrl;
struct v4l2_ctrl *pclk_ctrl;
struct v4l2_ctrl *hblank_ctrl;
struct v4l2_ctrl *vblank_ctrl;
struct {
struct v4l2_ctrl *exp_ctrl;
struct v4l2_ctrl *again_ctrl;
};
u32 vblank;
const struct imx334_mode *cur_mode;
unsigned long link_freq_bitmap;
u32 cur_code;
};
static const s64 link_freq[] = {
IMX334_LINK_FREQ_891M,
IMX334_LINK_FREQ_445M,
};
/* Sensor common mode registers values */
static const struct cci_reg_sequence common_mode_regs[] = {
{ IMX334_REG_MODE_SELECT, IMX334_MODE_STANDBY },
{ IMX334_REG_WINMODE, 0x04 },
{ IMX334_REG_VMAX, 0x0008ca },
{ IMX334_REG_HMAX, 0x044c },
{ IMX334_REG_BLACK_OFSET_ADR, 0x0000 },
{ IMX334_REG_UNRD_LINE_MAX, 0x0000 },
{ IMX334_REG_OPB_SIZE_V, 0x00 },
{ IMX334_REG_HREVERSE, 0x00 },
{ IMX334_REG_VREVERSE, 0x00 },
{ IMX334_REG_UNREAD_PARAM5, 0x0000 },
{ IMX334_REG_UNREAD_PARAM6, 0x0008 },
{ IMX334_REG_XVS_XHS_OUTSEL, 0x20 },
{ IMX334_REG_XVS_XHS_DRV, 0x0f },
{ IMX334_REG_BCWAIT_TIME, 0x3b },
{ IMX334_REG_CPWAIT_TIME, 0x2a },
{ IMX334_REG_INCKSEL1, 0x0129 },
{ IMX334_REG_INCKSEL2, 0x06 },
{ IMX334_REG_INCKSEL3, 0xa0 },
{ IMX334_REG_INCKSEL4, 0x7e },
{ IMX334_REG_SYS_MODE, 0x02 },
{ IMX334_REG_HADD_VADD, 0x00 },
{ IMX334_REG_VALID_EXPAND, 0x03 },
{ IMX334_REG_TCYCLE, 0x00 },
{ IMX334_REG_TCLKPOST, 0x007f },
{ IMX334_REG_TCLKPREPARE, 0x0037 },
{ IMX334_REG_TCLKTRAIL, 0x0037 },
{ IMX334_REG_TCLKZERO, 0xf7 },
{ IMX334_REG_THSPREPARE, 0x002f },
{ CCI_REG8(0x3078), 0x02 },
{ CCI_REG8(0x3079), 0x00 },
{ CCI_REG8(0x307a), 0x00 },
{ CCI_REG8(0x307b), 0x00 },
{ CCI_REG8(0x3080), 0x02 },
{ CCI_REG8(0x3081), 0x00 },
{ CCI_REG8(0x3082), 0x00 },
{ CCI_REG8(0x3083), 0x00 },
{ CCI_REG8(0x3088), 0x02 },
{ CCI_REG8(0x3094), 0x00 },
{ CCI_REG8(0x3095), 0x00 },
{ CCI_REG8(0x3096), 0x00 },
{ CCI_REG8(0x309b), 0x02 },
{ CCI_REG8(0x309c), 0x00 },
{ CCI_REG8(0x309d), 0x00 },
{ CCI_REG8(0x309e), 0x00 },
{ CCI_REG8(0x30a4), 0x00 },
{ CCI_REG8(0x30a5), 0x00 },
{ CCI_REG8(0x3288), 0x21 },
{ CCI_REG8(0x328a), 0x02 },
{ CCI_REG8(0x3414), 0x05 },
{ CCI_REG8(0x3416), 0x18 },
{ CCI_REG8(0x35Ac), 0x0e },
{ CCI_REG8(0x3648), 0x01 },
{ CCI_REG8(0x364a), 0x04 },
{ CCI_REG8(0x364c), 0x04 },
{ CCI_REG8(0x3678), 0x01 },
{ CCI_REG8(0x367c), 0x31 },
{ CCI_REG8(0x367e), 0x31 },
{ CCI_REG8(0x3708), 0x02 },
{ CCI_REG8(0x3714), 0x01 },
{ CCI_REG8(0x3715), 0x02 },
{ CCI_REG8(0x3716), 0x02 },
{ CCI_REG8(0x3717), 0x02 },
{ CCI_REG8(0x371c), 0x3d },
{ CCI_REG8(0x371d), 0x3f },
{ CCI_REG8(0x372c), 0x00 },
{ CCI_REG8(0x372d), 0x00 },
{ CCI_REG8(0x372e), 0x46 },
{ CCI_REG8(0x372f), 0x00 },
{ CCI_REG8(0x3730), 0x89 },
{ CCI_REG8(0x3731), 0x00 },
{ CCI_REG8(0x3732), 0x08 },
{ CCI_REG8(0x3733), 0x01 },
{ CCI_REG8(0x3734), 0xfe },
{ CCI_REG8(0x3735), 0x05 },
{ CCI_REG8(0x375d), 0x00 },
{ CCI_REG8(0x375e), 0x00 },
{ CCI_REG8(0x375f), 0x61 },
{ CCI_REG8(0x3760), 0x06 },
{ CCI_REG8(0x3768), 0x1b },
{ CCI_REG8(0x3769), 0x1b },
{ CCI_REG8(0x376a), 0x1a },
{ CCI_REG8(0x376b), 0x19 },
{ CCI_REG8(0x376c), 0x18 },
{ CCI_REG8(0x376d), 0x14 },
{ CCI_REG8(0x376e), 0x0f },
{ CCI_REG8(0x3776), 0x00 },
{ CCI_REG8(0x3777), 0x00 },
{ CCI_REG8(0x3778), 0x46 },
{ CCI_REG8(0x3779), 0x00 },
{ CCI_REG8(0x377a), 0x08 },
{ CCI_REG8(0x377b), 0x01 },
{ CCI_REG8(0x377c), 0x45 },
{ CCI_REG8(0x377d), 0x01 },
{ CCI_REG8(0x377e), 0x23 },
{ CCI_REG8(0x377f), 0x02 },
{ CCI_REG8(0x3780), 0xd9 },
{ CCI_REG8(0x3781), 0x03 },
{ CCI_REG8(0x3782), 0xf5 },
{ CCI_REG8(0x3783), 0x06 },
{ CCI_REG8(0x3784), 0xa5 },
{ CCI_REG8(0x3788), 0x0f },
{ CCI_REG8(0x378a), 0xd9 },
{ CCI_REG8(0x378b), 0x03 },
{ CCI_REG8(0x378c), 0xeb },
{ CCI_REG8(0x378d), 0x05 },
{ CCI_REG8(0x378e), 0x87 },
{ CCI_REG8(0x378f), 0x06 },
{ CCI_REG8(0x3790), 0xf5 },
{ CCI_REG8(0x3792), 0x43 },
{ CCI_REG8(0x3794), 0x7a },
{ CCI_REG8(0x3796), 0xa1 },
{ CCI_REG8(0x37b0), 0x37 },
{ CCI_REG8(0x3e04), 0x0e },
{ IMX334_REG_AGAIN, 0x0050 },
{ IMX334_REG_MASTER_MODE, 0x00 },
};
/* Sensor mode registers for 640x480@30fps */
static const struct cci_reg_sequence mode_640x480_regs[] = {
{ IMX334_REG_HTRIMMING_START, 0x0670 },
{ IMX334_REG_HNUM, 0x0280 },
{ IMX334_REG_AREA3_ST_ADR_1, 0x0748 },
{ IMX334_REG_AREA3_ST_ADR_2, 0x0749 },
{ IMX334_REG_AREA3_WIDTH_1, 0x01e0 },
{ IMX334_REG_AREA3_WIDTH_2, 0x01e0 },
{ IMX334_REG_Y_OUT_SIZE, 0x01e0 },
{ IMX334_REG_UNREAD_ED_ADR, 0x0b30 },
};
/* Sensor mode registers for 1280x720@30fps */
static const struct cci_reg_sequence mode_1280x720_regs[] = {
{ IMX334_REG_HTRIMMING_START, 0x0530 },
{ IMX334_REG_HNUM, 0x0500 },
{ IMX334_REG_AREA3_ST_ADR_1, 0x0384 },
{ IMX334_REG_AREA3_ST_ADR_2, 0x0385 },
{ IMX334_REG_AREA3_WIDTH_1, 0x02d0 },
{ IMX334_REG_AREA3_WIDTH_2, 0x02d0 },
{ IMX334_REG_Y_OUT_SIZE, 0x02d0 },
{ IMX334_REG_UNREAD_ED_ADR, 0x0b30 },
};
/* Sensor mode registers for 1920x1080@30fps */
static const struct cci_reg_sequence mode_1920x1080_regs[] = {
{ IMX334_REG_HTRIMMING_START, 0x03f0 },
{ IMX334_REG_HNUM, 0x0780 },
{ IMX334_REG_AREA3_ST_ADR_1, 0x02cc },
{ IMX334_REG_AREA3_ST_ADR_2, 0x02cd },
{ IMX334_REG_AREA3_WIDTH_1, 0x0438 },
{ IMX334_REG_AREA3_WIDTH_2, 0x0438 },
{ IMX334_REG_Y_OUT_SIZE, 0x0438 },
{ IMX334_REG_UNREAD_ED_ADR, 0x0a18 },
};
/* Sensor mode registers for 3840x2160@30fps */
static const struct cci_reg_sequence mode_3840x2160_regs[] = {
{ IMX334_REG_HMAX, 0x0226 },
{ IMX334_REG_INCKSEL2, 0x02 },
{ IMX334_REG_HTRIMMING_START, 0x003c },
{ IMX334_REG_HNUM, 0x0f00 },
{ IMX334_REG_AREA3_ST_ADR_1, 0x00b0 },
{ IMX334_REG_AREA3_ST_ADR_2, 0x00b1 },
{ IMX334_REG_UNREAD_ED_ADR, 0x1220 },
{ IMX334_REG_AREA3_WIDTH_1, 0x0870 },
{ IMX334_REG_AREA3_WIDTH_2, 0x0870 },
{ IMX334_REG_Y_OUT_SIZE, 0x0870 },
{ IMX334_REG_SYS_MODE, 0x0100 },
{ IMX334_REG_TCLKPOST, 0x00bf },
{ IMX334_REG_TCLKPREPARE, 0x0067 },
{ IMX334_REG_TCLKTRAIL, 0x006f },
{ IMX334_REG_TCLKZERO, 0x1d7 },
{ IMX334_REG_THSPREPARE, 0x006f },
{ IMX334_REG_THSZERO, 0x00cf },
{ IMX334_REG_THSTRAIL, 0x006f },
{ IMX334_REG_THSEXIT, 0x00b7 },
{ IMX334_REG_TPLX, 0x005f },
};
static const char * const imx334_test_pattern_menu[] = {
"Disabled",
"Vertical Color Bars",
"Horizontal Color Bars",
};
static const int imx334_test_pattern_val[] = {
IMX334_TP_DISABLE,
IMX334_TP_COLOR_HBARS,
IMX334_TP_COLOR_VBARS,
};
static const struct cci_reg_sequence raw10_framefmt_regs[] = {
{ IMX334_REG_ADBIT, 0x00 },
{ IMX334_REG_MDBIT, 0x00 },
{ IMX334_REG_ADBIT1, 0x01ff },
};
static const struct cci_reg_sequence raw12_framefmt_regs[] = {
{ IMX334_REG_ADBIT, 0x01 },
{ IMX334_REG_MDBIT, 0x01 },
{ IMX334_REG_ADBIT1, 0x0047 },
};
static const u32 imx334_mbus_codes[] = {
MEDIA_BUS_FMT_SRGGB12_1X12,
MEDIA_BUS_FMT_SRGGB10_1X10,
};
/* Supported sensor mode configurations */
static const struct imx334_mode supported_modes[] = {
{
.width = 3840,
.height = 2160,
.hblank = 560,
.vblank = 2340,
.vblank_min = 90,
.vblank_max = 132840,
.pclk = 594000000,
.link_freq_idx = 0,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_3840x2160_regs),
.regs = mode_3840x2160_regs,
},
}, {
.width = 1920,
.height = 1080,
.hblank = 2480,
.vblank = 1170,
.vblank_min = 45,
.vblank_max = 132840,
.pclk = 297000000,
.link_freq_idx = 1,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
.regs = mode_1920x1080_regs,
},
}, {
.width = 1280,
.height = 720,
.hblank = 2480,
.vblank = 1170,
.vblank_min = 45,
.vblank_max = 132840,
.pclk = 297000000,
.link_freq_idx = 1,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1280x720_regs),
.regs = mode_1280x720_regs,
},
}, {
.width = 640,
.height = 480,
.hblank = 2480,
.vblank = 1170,
.vblank_min = 45,
.vblank_max = 132840,
.pclk = 297000000,
.link_freq_idx = 1,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_640x480_regs),
.regs = mode_640x480_regs,
},
},
};
/**
* to_imx334() - imv334 V4L2 sub-device to imx334 device.
* @subdev: pointer to imx334 V4L2 sub-device
*
* Return: pointer to imx334 device
*/
static inline struct imx334 *to_imx334(struct v4l2_subdev *subdev)
{
return container_of(subdev, struct imx334, sd);
}
/**
* imx334_update_controls() - Update control ranges based on streaming mode
* @imx334: pointer to imx334 device
* @mode: pointer to imx334_mode sensor mode
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_update_controls(struct imx334 *imx334,
const struct imx334_mode *mode)
{
int ret;
ret = __v4l2_ctrl_s_ctrl(imx334->link_freq_ctrl, mode->link_freq_idx);
if (ret)
return ret;
ret = __v4l2_ctrl_modify_range(imx334->pclk_ctrl, mode->pclk,
mode->pclk, 1, mode->pclk);
if (ret)
return ret;
ret = __v4l2_ctrl_modify_range(imx334->hblank_ctrl, mode->hblank,
mode->hblank, 1, mode->hblank);
if (ret)
return ret;
ret = __v4l2_ctrl_modify_range(imx334->vblank_ctrl, mode->vblank_min,
mode->vblank_max, 1, mode->vblank);
if (ret)
return ret;
return __v4l2_ctrl_s_ctrl(imx334->vblank_ctrl, mode->vblank);
}
/**
* imx334_update_exp_gain() - Set updated exposure and gain
* @imx334: pointer to imx334 device
* @exposure: updated exposure value
* @gain: updated analog gain value
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_update_exp_gain(struct imx334 *imx334, u32 exposure, u32 gain)
{
u32 lpfr, shutter;
int ret_hold;
int ret = 0;
lpfr = imx334->vblank + imx334->cur_mode->height;
shutter = lpfr - exposure;
dev_dbg(imx334->dev, "Set long exp %u analog gain %u sh0 %u lpfr %u\n",
exposure, gain, shutter, lpfr);
cci_write(imx334->cci, IMX334_REG_HOLD, 1, &ret);
cci_write(imx334->cci, IMX334_REG_VMAX, lpfr, &ret);
cci_write(imx334->cci, IMX334_REG_SHUTTER, shutter, &ret);
cci_write(imx334->cci, IMX334_REG_AGAIN, gain, &ret);
ret_hold = cci_write(imx334->cci, IMX334_REG_HOLD, 0, NULL);
if (ret_hold)
return ret_hold;
return ret;
}
/**
* imx334_set_ctrl() - Set subdevice control
* @ctrl: pointer to v4l2_ctrl structure
*
* Supported controls:
* - V4L2_CID_VBLANK
* - cluster controls:
* - V4L2_CID_ANALOGUE_GAIN
* - V4L2_CID_EXPOSURE
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct imx334 *imx334 =
container_of(ctrl->handler, struct imx334, ctrl_handler);
u32 analog_gain;
u32 exposure;
int ret;
if (ctrl->id == V4L2_CID_VBLANK) {
imx334->vblank = imx334->vblank_ctrl->val;
dev_dbg(imx334->dev, "Received vblank %u, new lpfr %u\n",
imx334->vblank,
imx334->vblank + imx334->cur_mode->height);
ret = __v4l2_ctrl_modify_range(imx334->exp_ctrl,
IMX334_EXPOSURE_MIN,
imx334->vblank +
imx334->cur_mode->height -
IMX334_EXPOSURE_OFFSET,
1, IMX334_EXPOSURE_DEFAULT);
if (ret)
return ret;
}
/* Set controls only if sensor is in power on state */
if (!pm_runtime_get_if_in_use(imx334->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_VBLANK:
exposure = imx334->exp_ctrl->val;
analog_gain = imx334->again_ctrl->val;
ret = imx334_update_exp_gain(imx334, exposure, analog_gain);
break;
case V4L2_CID_EXPOSURE:
exposure = ctrl->val;
analog_gain = imx334->again_ctrl->val;
dev_dbg(imx334->dev, "Received exp %u analog gain %u\n",
exposure, analog_gain);
ret = imx334_update_exp_gain(imx334, exposure, analog_gain);
break;
case V4L2_CID_PIXEL_RATE:
case V4L2_CID_LINK_FREQ:
case V4L2_CID_HBLANK:
ret = 0;
break;
case V4L2_CID_TEST_PATTERN:
if (ctrl->val) {
cci_write(imx334->cci, IMX334_TP_CLK_EN,
IMX334_TP_CLK_EN_VAL, NULL);
cci_write(imx334->cci, IMX334_DIG_CLP_MODE, 0x0, NULL);
cci_write(imx334->cci, IMX334_TPG_COLORW,
IMX334_TPG_COLORW_120P, NULL);
cci_write(imx334->cci, IMX334_REG_TP,
imx334_test_pattern_val[ctrl->val], NULL);
cci_write(imx334->cci, IMX334_TPG_EN_DOUT,
IMX334_TP_ENABLE, NULL);
} else {
cci_write(imx334->cci, IMX334_DIG_CLP_MODE, 0x1, NULL);
cci_write(imx334->cci, IMX334_TP_CLK_EN,
IMX334_TP_CLK_DIS_VAL, NULL);
cci_write(imx334->cci, IMX334_TPG_EN_DOUT,
IMX334_TP_DISABLE, NULL);
}
ret = 0;
break;
default:
dev_err(imx334->dev, "Invalid control %d\n", ctrl->id);
ret = -EINVAL;
}
pm_runtime_put(imx334->dev);
return ret;
}
/* V4l2 subdevice control ops*/
static const struct v4l2_ctrl_ops imx334_ctrl_ops = {
.s_ctrl = imx334_set_ctrl,
};
static int imx334_get_format_code(struct imx334 *imx334, u32 code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
if (imx334_mbus_codes[i] == code)
return imx334_mbus_codes[i];
}
return imx334_mbus_codes[0];
}
/**
* imx334_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
* @sd: pointer to imx334 V4L2 sub-device structure
* @sd_state: V4L2 sub-device state
* @code: V4L2 sub-device code enumeration need to be filled
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index >= ARRAY_SIZE(imx334_mbus_codes))
return -EINVAL;
code->code = imx334_mbus_codes[code->index];
return 0;
}
/**
* imx334_enum_frame_size() - Enumerate V4L2 sub-device frame sizes
* @sd: pointer to imx334 V4L2 sub-device structure
* @sd_state: V4L2 sub-device state
* @fsize: V4L2 sub-device size enumeration need to be filled
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fsize)
{
struct imx334 *imx334 = to_imx334(sd);
u32 code;
if (fsize->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
code = imx334_get_format_code(imx334, fsize->code);
if (fsize->code != code)
return -EINVAL;
fsize->min_width = supported_modes[fsize->index].width;
fsize->max_width = fsize->min_width;
fsize->min_height = supported_modes[fsize->index].height;
fsize->max_height = fsize->min_height;
return 0;
}
/**
* imx334_fill_pad_format() - Fill subdevice pad format
* from selected sensor mode
* @imx334: pointer to imx334 device
* @mode: pointer to imx334_mode sensor mode
* @fmt: V4L2 sub-device format need to be filled
*/
static void imx334_fill_pad_format(struct imx334 *imx334,
const struct imx334_mode *mode,
struct v4l2_subdev_format *fmt)
{
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.field = V4L2_FIELD_NONE;
fmt->format.colorspace = V4L2_COLORSPACE_RAW;
fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT;
fmt->format.xfer_func = V4L2_XFER_FUNC_NONE;
}
/**
* imx334_get_pad_format() - Get subdevice pad format
* @sd: pointer to imx334 V4L2 sub-device structure
* @sd_state: V4L2 sub-device state
* @fmt: V4L2 sub-device format need to be set
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_get_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct imx334 *imx334 = to_imx334(sd);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
struct v4l2_mbus_framefmt *framefmt;
framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
fmt->format = *framefmt;
} else {
fmt->format.code = imx334->cur_code;
imx334_fill_pad_format(imx334, imx334->cur_mode, fmt);
}
return 0;
}
/**
* imx334_set_pad_format() - Set subdevice pad format
* @sd: pointer to imx334 V4L2 sub-device structure
* @sd_state: V4L2 sub-device state
* @fmt: V4L2 sub-device format need to be set
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_set_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct imx334 *imx334 = to_imx334(sd);
const struct imx334_mode *mode;
int ret = 0;
mode = v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes),
width, height,
fmt->format.width, fmt->format.height);
imx334_fill_pad_format(imx334, mode, fmt);
fmt->format.code = imx334_get_format_code(imx334, fmt->format.code);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
struct v4l2_mbus_framefmt *framefmt;
framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
*framefmt = fmt->format;
} else if (imx334->cur_mode != mode || imx334->cur_code != fmt->format.code) {
imx334->cur_code = fmt->format.code;
ret = imx334_update_controls(imx334, mode);
if (!ret)
imx334->cur_mode = mode;
}
return ret;
}
/**
* imx334_init_state() - Initialize sub-device state
* @sd: pointer to imx334 V4L2 sub-device structure
* @sd_state: V4L2 sub-device state
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_init_state(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state)
{
struct imx334 *imx334 = to_imx334(sd);
struct v4l2_subdev_format fmt = { 0 };
fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
imx334_fill_pad_format(imx334, imx334->cur_mode, &fmt);
__v4l2_ctrl_modify_range(imx334->link_freq_ctrl, 0,
__fls(imx334->link_freq_bitmap),
~(imx334->link_freq_bitmap),
__ffs(imx334->link_freq_bitmap));
return imx334_set_pad_format(sd, sd_state, &fmt);
}
static int imx334_set_framefmt(struct imx334 *imx334)
{
switch (imx334->cur_code) {
case MEDIA_BUS_FMT_SRGGB10_1X10:
return cci_multi_reg_write(imx334->cci, raw10_framefmt_regs,
ARRAY_SIZE(raw10_framefmt_regs), NULL);
case MEDIA_BUS_FMT_SRGGB12_1X12:
return cci_multi_reg_write(imx334->cci, raw12_framefmt_regs,
ARRAY_SIZE(raw12_framefmt_regs), NULL);
}
return -EINVAL;
}
/**
* imx334_enable_streams() - Enable specified streams for the sensor
* @sd: pointer to the V4L2 subdevice
* @state: pointer to the subdevice state
* @pad: pad number for which streams are enabled
* @streams_mask: bitmask specifying the streams to enable
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_enable_streams(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state, u32 pad,
u64 streams_mask)
{
struct imx334 *imx334 = to_imx334(sd);
const struct imx334_reg_list *reg_list;
int ret;
ret = pm_runtime_resume_and_get(imx334->dev);
if (ret < 0)
return ret;
ret = cci_multi_reg_write(imx334->cci, common_mode_regs,
ARRAY_SIZE(common_mode_regs), NULL);
if (ret) {
dev_err(imx334->dev, "fail to write common registers\n");
goto err_rpm_put;
}
/* Write sensor mode registers */
reg_list = &imx334->cur_mode->reg_list;
ret = cci_multi_reg_write(imx334->cci, reg_list->regs,
reg_list->num_of_regs, NULL);
if (ret) {
dev_err(imx334->dev, "fail to write initial registers\n");
goto err_rpm_put;
}
ret = cci_write(imx334->cci, IMX334_REG_LANEMODE,
IMX334_CSI_4_LANE_MODE, NULL);
if (ret) {
dev_err(imx334->dev, "failed to configure lanes\n");
goto err_rpm_put;
}
ret = imx334_set_framefmt(imx334);
if (ret) {
dev_err(imx334->dev, "%s failed to set frame format: %d\n",
__func__, ret);
goto err_rpm_put;
}
/* Setup handler will write actual exposure and gain */
ret = __v4l2_ctrl_handler_setup(imx334->sd.ctrl_handler);
if (ret) {
dev_err(imx334->dev, "fail to setup handler\n");
goto err_rpm_put;
}
/* Start streaming */
ret = cci_write(imx334->cci, IMX334_REG_MODE_SELECT,
IMX334_MODE_STREAMING, NULL);
if (ret) {
dev_err(imx334->dev, "fail to start streaming\n");
goto err_rpm_put;
}
return 0;
err_rpm_put:
pm_runtime_put(imx334->dev);
return ret;
}
/**
* imx334_disable_streams() - Enable specified streams for the sensor
* @sd: pointer to the V4L2 subdevice
* @state: pointer to the subdevice state
* @pad: pad number for which streams are disabled
* @streams_mask: bitmask specifying the streams to disable
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_disable_streams(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state, u32 pad,
u64 streams_mask)
{
struct imx334 *imx334 = to_imx334(sd);
int ret;
ret = cci_write(imx334->cci, IMX334_REG_MODE_SELECT,
IMX334_MODE_STANDBY, NULL);
if (ret)
dev_err(imx334->dev, "%s failed to stop stream\n", __func__);
pm_runtime_put(imx334->dev);
return ret;
}
/**
* imx334_detect() - Detect imx334 sensor
* @imx334: pointer to imx334 device
*
* Return: 0 if successful, -EIO if sensor id does not match
*/
static int imx334_detect(struct imx334 *imx334)
{
int ret;
u64 val;
ret = cci_read(imx334->cci, IMX334_REG_ID, &val, NULL);
if (ret)
return ret;
if (val != IMX334_ID) {
dev_err(imx334->dev, "chip id mismatch: %x!=%llx\n",
IMX334_ID, val);
return -ENXIO;
}
return 0;
}
/**
* imx334_parse_hw_config() - Parse HW configuration and check if supported
* @imx334: pointer to imx334 device
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_parse_hw_config(struct imx334 *imx334)
{
struct fwnode_handle *fwnode = dev_fwnode(imx334->dev);
struct v4l2_fwnode_endpoint bus_cfg = {
.bus_type = V4L2_MBUS_CSI2_DPHY
};
struct fwnode_handle *ep;
unsigned long rate;
int ret;
if (!fwnode)
return -ENXIO;
/* Request optional reset pin */
imx334->reset_gpio = devm_gpiod_get_optional(imx334->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(imx334->reset_gpio))
return dev_err_probe(imx334->dev, PTR_ERR(imx334->reset_gpio),
"failed to get reset gpio\n");
/* Get sensor input clock */
imx334->inclk = devm_clk_get(imx334->dev, NULL);
if (IS_ERR(imx334->inclk))
return dev_err_probe(imx334->dev, PTR_ERR(imx334->inclk),
"could not get inclk\n");
rate = clk_get_rate(imx334->inclk);
if (rate != IMX334_INCLK_RATE)
return dev_err_probe(imx334->dev, -EINVAL,
"inclk frequency mismatch\n");
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
if (!ep)
return -ENXIO;
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
fwnode_handle_put(ep);
if (ret)
return ret;
if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX334_NUM_DATA_LANES) {
dev_err(imx334->dev,
"number of CSI2 data lanes %d is not supported\n",
bus_cfg.bus.mipi_csi2.num_data_lanes);
ret = -EINVAL;
goto done_endpoint_free;
}
ret = v4l2_link_freq_to_bitmap(imx334->dev, bus_cfg.link_frequencies,
bus_cfg.nr_of_link_frequencies,
link_freq, ARRAY_SIZE(link_freq),
&imx334->link_freq_bitmap);
done_endpoint_free:
v4l2_fwnode_endpoint_free(&bus_cfg);
return ret;
}
/* V4l2 subdevice ops */
static const struct v4l2_subdev_video_ops imx334_video_ops = {
.s_stream = v4l2_subdev_s_stream_helper,
};
static const struct v4l2_subdev_pad_ops imx334_pad_ops = {
.enum_mbus_code = imx334_enum_mbus_code,
.enum_frame_size = imx334_enum_frame_size,
.get_fmt = imx334_get_pad_format,
.set_fmt = imx334_set_pad_format,
.enable_streams = imx334_enable_streams,
.disable_streams = imx334_disable_streams,
};
static const struct v4l2_subdev_ops imx334_subdev_ops = {
.video = &imx334_video_ops,
.pad = &imx334_pad_ops,
};
static const struct v4l2_subdev_internal_ops imx334_internal_ops = {
.init_state = imx334_init_state,
};
/**
* imx334_power_on() - Sensor power on sequence
* @dev: pointer to i2c device
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_power_on(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct imx334 *imx334 = to_imx334(sd);
int ret;
gpiod_set_value_cansleep(imx334->reset_gpio, 1);
ret = clk_prepare_enable(imx334->inclk);
if (ret) {
dev_err(imx334->dev, "fail to enable inclk\n");
goto error_reset;
}
usleep_range(18000, 20000);
return 0;
error_reset:
gpiod_set_value_cansleep(imx334->reset_gpio, 0);
return ret;
}
/**
* imx334_power_off() - Sensor power off sequence
* @dev: pointer to i2c device
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_power_off(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct imx334 *imx334 = to_imx334(sd);
gpiod_set_value_cansleep(imx334->reset_gpio, 0);
clk_disable_unprepare(imx334->inclk);
return 0;
}
/**
* imx334_init_controls() - Initialize sensor subdevice controls
* @imx334: pointer to imx334 device
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_init_controls(struct imx334 *imx334)
{
struct v4l2_ctrl_handler *ctrl_hdlr = &imx334->ctrl_handler;
const struct imx334_mode *mode = imx334->cur_mode;
u32 lpfr;
int ret;
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 7);
if (ret)
return ret;
/* Initialize exposure and gain */
lpfr = mode->vblank + mode->height;
imx334->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
&imx334_ctrl_ops,
V4L2_CID_EXPOSURE,
IMX334_EXPOSURE_MIN,
lpfr - IMX334_EXPOSURE_OFFSET,
IMX334_EXPOSURE_STEP,
IMX334_EXPOSURE_DEFAULT);
imx334->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
&imx334_ctrl_ops,
V4L2_CID_ANALOGUE_GAIN,
IMX334_AGAIN_MIN,
IMX334_AGAIN_MAX,
IMX334_AGAIN_STEP,
IMX334_AGAIN_DEFAULT);
v4l2_ctrl_cluster(2, &imx334->exp_ctrl);
imx334->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
&imx334_ctrl_ops,
V4L2_CID_VBLANK,
mode->vblank_min,
mode->vblank_max,
1, mode->vblank);
/* Read only controls */
imx334->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
&imx334_ctrl_ops,
V4L2_CID_PIXEL_RATE,
mode->pclk, mode->pclk,
1, mode->pclk);
imx334->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr,
&imx334_ctrl_ops,
V4L2_CID_LINK_FREQ,
__fls(imx334->link_freq_bitmap),
__ffs(imx334->link_freq_bitmap),
link_freq);
if (imx334->link_freq_ctrl)
imx334->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
imx334->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
&imx334_ctrl_ops,
V4L2_CID_HBLANK,
IMX334_REG_MIN,
IMX334_REG_MAX,
1, mode->hblank);
if (imx334->hblank_ctrl)
imx334->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx334_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(imx334_test_pattern_menu) - 1,
0, 0, imx334_test_pattern_menu);
if (ctrl_hdlr->error) {
dev_err(imx334->dev, "control init failed: %d",
ctrl_hdlr->error);
v4l2_ctrl_handler_free(ctrl_hdlr);
return ctrl_hdlr->error;
}
imx334->sd.ctrl_handler = ctrl_hdlr;
return 0;
}
/**
* imx334_probe() - I2C client device binding
* @client: pointer to i2c client device
*
* Return: 0 if successful, error code otherwise.
*/
static int imx334_probe(struct i2c_client *client)
{
struct imx334 *imx334;
int ret;
imx334 = devm_kzalloc(&client->dev, sizeof(*imx334), GFP_KERNEL);
if (!imx334)
return -ENOMEM;
imx334->dev = &client->dev;
imx334->cci = devm_cci_regmap_init_i2c(client, 16);
if (IS_ERR(imx334->cci)) {
dev_err(imx334->dev, "Unable to initialize I2C\n");
return -ENODEV;
}
/* Initialize subdev */
v4l2_i2c_subdev_init(&imx334->sd, client, &imx334_subdev_ops);
imx334->sd.internal_ops = &imx334_internal_ops;
ret = imx334_parse_hw_config(imx334);
if (ret)
return dev_err_probe(imx334->dev, ret,
"HW configuration is not supported\n");
ret = imx334_power_on(imx334->dev);
if (ret) {
dev_err_probe(imx334->dev, ret, "failed to power-on the sensor\n");
return ret;
}
/* Check module identity */
ret = imx334_detect(imx334);
if (ret) {
dev_err(imx334->dev, "failed to find sensor: %d\n", ret);
goto error_power_off;
}
/* Set default mode to max resolution */
imx334->cur_mode = &supported_modes[__ffs(imx334->link_freq_bitmap)];
imx334->cur_code = imx334_mbus_codes[0];
imx334->vblank = imx334->cur_mode->vblank;
ret = imx334_init_controls(imx334);
if (ret) {
dev_err(imx334->dev, "failed to init controls: %d\n", ret);
goto error_power_off;
}
/* Initialize subdev */
imx334->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
imx334->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
/* Initialize source pad */
imx334->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&imx334->sd.entity, 1, &imx334->pad);
if (ret) {
dev_err(imx334->dev, "failed to init entity pads: %d\n", ret);
goto error_handler_free;
}
imx334->sd.state_lock = imx334->ctrl_handler.lock;
ret = v4l2_subdev_init_finalize(&imx334->sd);
if (ret < 0) {
dev_err(imx334->dev, "subdev init error: %d\n", ret);
goto error_media_entity;
}
pm_runtime_set_active(imx334->dev);
pm_runtime_enable(imx334->dev);
ret = v4l2_async_register_subdev_sensor(&imx334->sd);
if (ret < 0) {
dev_err(imx334->dev,
"failed to register async subdev: %d\n", ret);
goto error_subdev_cleanup;
}
pm_runtime_idle(imx334->dev);
return 0;
error_subdev_cleanup:
v4l2_subdev_cleanup(&imx334->sd);
pm_runtime_disable(imx334->dev);
pm_runtime_set_suspended(imx334->dev);
error_media_entity:
media_entity_cleanup(&imx334->sd.entity);
error_handler_free:
v4l2_ctrl_handler_free(imx334->sd.ctrl_handler);
error_power_off:
imx334_power_off(imx334->dev);
return ret;
}
/**
* imx334_remove() - I2C client device unbinding
* @client: pointer to I2C client device
*
* Return: 0 if successful, error code otherwise.
*/
static void imx334_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_async_unregister_subdev(sd);
v4l2_subdev_cleanup(sd);
media_entity_cleanup(&sd->entity);
v4l2_ctrl_handler_free(sd->ctrl_handler);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev)) {
imx334_power_off(&client->dev);
pm_runtime_set_suspended(&client->dev);
}
}
static const struct dev_pm_ops imx334_pm_ops = {
SET_RUNTIME_PM_OPS(imx334_power_off, imx334_power_on, NULL)
};
static const struct of_device_id imx334_of_match[] = {
{ .compatible = "sony,imx334" },
{ }
};
MODULE_DEVICE_TABLE(of, imx334_of_match);
static struct i2c_driver imx334_driver = {
.probe = imx334_probe,
.remove = imx334_remove,
.driver = {
.name = "imx334",
.pm = &imx334_pm_ops,
.of_match_table = imx334_of_match,
},
};
module_i2c_driver(imx334_driver);
MODULE_DESCRIPTION("Sony imx334 sensor driver");
MODULE_LICENSE("GPL");
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