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linux/drivers/media/i2c/imx214.c
Dan Carpenter 38985a2568 media: i2c: imx214: Fix uninitialized variable in imx214_set_ctrl() 
You can't pass uninitialized "ret" variables to cci_write().  It has to
start as zero.

Fixes: 4f0aeba4f155 ("media: i2c: imx214: Convert to CCI register access helpers")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: André Apitzsch <git@apitzsch.eu>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-03-04 13:35:32 +01:00

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// SPDX-License-Identifier: GPL-2.0
/*
* imx214.c - imx214 sensor driver
*
* Copyright 2018 Qtechnology A/S
*
* Ricardo Ribalda <ribalda@kernel.org>
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <media/media-entity.h>
#include <media/v4l2-cci.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
/* Chip ID */
#define IMX214_REG_CHIP_ID CCI_REG16(0x0016)
#define IMX214_CHIP_ID 0x0214
#define IMX214_REG_MODE_SELECT CCI_REG8(0x0100)
#define IMX214_MODE_STANDBY 0x00
#define IMX214_MODE_STREAMING 0x01
#define IMX214_REG_FAST_STANDBY_CTRL CCI_REG8(0x0106)
#define IMX214_DEFAULT_CLK_FREQ 24000000
#define IMX214_DEFAULT_LINK_FREQ 600000000
/* Keep wrong link frequency for backward compatibility */
#define IMX214_DEFAULT_LINK_FREQ_LEGACY 480000000
#define IMX214_DEFAULT_PIXEL_RATE ((IMX214_DEFAULT_LINK_FREQ * 8LL) / 10)
#define IMX214_FPS 30
/* V-TIMING internal */
#define IMX214_REG_FRM_LENGTH_LINES CCI_REG16(0x0340)
#define IMX214_VTS_MAX 0xffff
#define IMX214_VBLANK_MIN 890
/* HBLANK control - read only */
#define IMX214_PPL_DEFAULT 5008
/* Exposure control */
#define IMX214_REG_EXPOSURE CCI_REG16(0x0202)
#define IMX214_EXPOSURE_OFFSET 10
#define IMX214_EXPOSURE_MIN 1
#define IMX214_EXPOSURE_STEP 1
#define IMX214_EXPOSURE_DEFAULT 3184
#define IMX214_REG_EXPOSURE_RATIO CCI_REG8(0x0222)
#define IMX214_REG_SHORT_EXPOSURE CCI_REG16(0x0224)
/* Analog gain control */
#define IMX214_REG_ANALOG_GAIN CCI_REG16(0x0204)
#define IMX214_REG_SHORT_ANALOG_GAIN CCI_REG16(0x0216)
#define IMX214_ANA_GAIN_MIN 0
#define IMX214_ANA_GAIN_MAX 448
#define IMX214_ANA_GAIN_STEP 1
#define IMX214_ANA_GAIN_DEFAULT 0x0
/* Digital gain control */
#define IMX214_REG_DIG_GAIN_GREENR CCI_REG16(0x020e)
#define IMX214_REG_DIG_GAIN_RED CCI_REG16(0x0210)
#define IMX214_REG_DIG_GAIN_BLUE CCI_REG16(0x0212)
#define IMX214_REG_DIG_GAIN_GREENB CCI_REG16(0x0214)
#define IMX214_DGTL_GAIN_MIN 0x0100
#define IMX214_DGTL_GAIN_MAX 0x0fff
#define IMX214_DGTL_GAIN_DEFAULT 0x0100
#define IMX214_DGTL_GAIN_STEP 1
#define IMX214_REG_ORIENTATION CCI_REG8(0x0101)
#define IMX214_REG_MASK_CORR_FRAMES CCI_REG8(0x0105)
#define IMX214_CORR_FRAMES_TRANSMIT 0
#define IMX214_CORR_FRAMES_MASK 1
#define IMX214_REG_CSI_DATA_FORMAT CCI_REG16(0x0112)
#define IMX214_CSI_DATA_FORMAT_RAW8 0x0808
#define IMX214_CSI_DATA_FORMAT_RAW10 0x0A0A
#define IMX214_CSI_DATA_FORMAT_COMP6 0x0A06
#define IMX214_CSI_DATA_FORMAT_COMP8 0x0A08
#define IMX214_REG_CSI_LANE_MODE CCI_REG8(0x0114)
#define IMX214_CSI_2_LANE_MODE 1
#define IMX214_CSI_4_LANE_MODE 3
#define IMX214_REG_EXCK_FREQ CCI_REG16(0x0136)
#define IMX214_EXCK_FREQ(n) ((n) * 256) /* n expressed in MHz */
#define IMX214_REG_TEMP_SENSOR_CONTROL CCI_REG8(0x0138)
#define IMX214_REG_HDR_MODE CCI_REG8(0x0220)
#define IMX214_HDR_MODE_OFF 0
#define IMX214_HDR_MODE_ON 1
#define IMX214_REG_HDR_RES_REDUCTION CCI_REG8(0x0221)
#define IMX214_HDR_RES_REDU_THROUGH 0x11
#define IMX214_HDR_RES_REDU_2_BINNING 0x22
/* PLL settings */
#define IMX214_REG_VTPXCK_DIV CCI_REG8(0x0301)
#define IMX214_REG_VTSYCK_DIV CCI_REG8(0x0303)
#define IMX214_REG_PREPLLCK_VT_DIV CCI_REG8(0x0305)
#define IMX214_REG_PLL_VT_MPY CCI_REG16(0x0306)
#define IMX214_REG_OPPXCK_DIV CCI_REG8(0x0309)
#define IMX214_REG_OPSYCK_DIV CCI_REG8(0x030b)
#define IMX214_REG_PLL_MULT_DRIV CCI_REG8(0x0310)
#define IMX214_PLL_SINGLE 0
#define IMX214_PLL_DUAL 1
#define IMX214_REG_LINE_LENGTH_PCK CCI_REG16(0x0342)
#define IMX214_REG_X_ADD_STA CCI_REG16(0x0344)
#define IMX214_REG_Y_ADD_STA CCI_REG16(0x0346)
#define IMX214_REG_X_ADD_END CCI_REG16(0x0348)
#define IMX214_REG_Y_ADD_END CCI_REG16(0x034a)
#define IMX214_REG_X_OUTPUT_SIZE CCI_REG16(0x034c)
#define IMX214_REG_Y_OUTPUT_SIZE CCI_REG16(0x034e)
#define IMX214_REG_X_EVEN_INC CCI_REG8(0x0381)
#define IMX214_REG_X_ODD_INC CCI_REG8(0x0383)
#define IMX214_REG_Y_EVEN_INC CCI_REG8(0x0385)
#define IMX214_REG_Y_ODD_INC CCI_REG8(0x0387)
#define IMX214_REG_SCALE_MODE CCI_REG8(0x0401)
#define IMX214_SCALE_NONE 0
#define IMX214_SCALE_HORIZONTAL 1
#define IMX214_SCALE_FULL 2
#define IMX214_REG_SCALE_M CCI_REG16(0x0404)
#define IMX214_REG_DIG_CROP_X_OFFSET CCI_REG16(0x0408)
#define IMX214_REG_DIG_CROP_Y_OFFSET CCI_REG16(0x040a)
#define IMX214_REG_DIG_CROP_WIDTH CCI_REG16(0x040c)
#define IMX214_REG_DIG_CROP_HEIGHT CCI_REG16(0x040e)
#define IMX214_REG_REQ_LINK_BIT_RATE CCI_REG32(0x0820)
#define IMX214_LINK_BIT_RATE_MBPS(n) ((n) << 16)
/* Binning mode */
#define IMX214_REG_BINNING_MODE CCI_REG8(0x0900)
#define IMX214_BINNING_NONE 0
#define IMX214_BINNING_ENABLE 1
#define IMX214_REG_BINNING_TYPE CCI_REG8(0x0901)
#define IMX214_REG_BINNING_WEIGHTING CCI_REG8(0x0902)
#define IMX214_BINNING_AVERAGE 0x00
#define IMX214_BINNING_SUMMED 0x01
#define IMX214_BINNING_BAYER 0x02
#define IMX214_REG_SING_DEF_CORR_EN CCI_REG8(0x0b06)
#define IMX214_SING_DEF_CORR_OFF 0
#define IMX214_SING_DEF_CORR_ON 1
/* AWB control */
#define IMX214_REG_ABS_GAIN_GREENR CCI_REG16(0x0b8e)
#define IMX214_REG_ABS_GAIN_RED CCI_REG16(0x0b90)
#define IMX214_REG_ABS_GAIN_BLUE CCI_REG16(0x0b92)
#define IMX214_REG_ABS_GAIN_GREENB CCI_REG16(0x0b94)
#define IMX214_REG_RMSC_NR_MODE CCI_REG8(0x3001)
#define IMX214_REG_STATS_OUT_EN CCI_REG8(0x3013)
#define IMX214_STATS_OUT_OFF 0
#define IMX214_STATS_OUT_ON 1
/* Chroma noise reduction */
#define IMX214_REG_NML_NR_EN CCI_REG8(0x30a2)
#define IMX214_NML_NR_OFF 0
#define IMX214_NML_NR_ON 1
#define IMX214_REG_EBD_SIZE_V CCI_REG8(0x5041)
#define IMX214_EBD_NO 0
#define IMX214_EBD_4_LINE 4
#define IMX214_REG_RG_STATS_LMT CCI_REG16(0x6d12)
#define IMX214_RG_STATS_LMT_10_BIT 0x03FF
#define IMX214_RG_STATS_LMT_14_BIT 0x3FFF
#define IMX214_REG_ATR_FAST_MOVE CCI_REG8(0x9300)
/* Test Pattern Control */
#define IMX214_REG_TEST_PATTERN CCI_REG16(0x0600)
#define IMX214_TEST_PATTERN_DISABLE 0
#define IMX214_TEST_PATTERN_SOLID_COLOR 1
#define IMX214_TEST_PATTERN_COLOR_BARS 2
#define IMX214_TEST_PATTERN_GREY_COLOR 3
#define IMX214_TEST_PATTERN_PN9 4
/* Test pattern colour components */
#define IMX214_REG_TESTP_RED CCI_REG16(0x0602)
#define IMX214_REG_TESTP_GREENR CCI_REG16(0x0604)
#define IMX214_REG_TESTP_BLUE CCI_REG16(0x0606)
#define IMX214_REG_TESTP_GREENB CCI_REG16(0x0608)
#define IMX214_TESTP_COLOUR_MIN 0
#define IMX214_TESTP_COLOUR_MAX 0x03ff
#define IMX214_TESTP_COLOUR_STEP 1
/* IMX214 native and active pixel array size */
#define IMX214_NATIVE_WIDTH 4224U
#define IMX214_NATIVE_HEIGHT 3136U
#define IMX214_PIXEL_ARRAY_LEFT 8U
#define IMX214_PIXEL_ARRAY_TOP 8U
#define IMX214_PIXEL_ARRAY_WIDTH 4208U
#define IMX214_PIXEL_ARRAY_HEIGHT 3120U
static const char * const imx214_supply_name[] = {
"vdda",
"vddd",
"vdddo",
};
#define IMX214_NUM_SUPPLIES ARRAY_SIZE(imx214_supply_name)
/*
* The supported formats.
* This table MUST contain 4 entries per format, to cover the various flip
* combinations in the order
* - no flip
* - h flip
* - v flip
* - h&v flips
*/
static const u32 imx214_mbus_formats[] = {
MEDIA_BUS_FMT_SRGGB10_1X10,
MEDIA_BUS_FMT_SGRBG10_1X10,
MEDIA_BUS_FMT_SGBRG10_1X10,
MEDIA_BUS_FMT_SBGGR10_1X10,
};
static const char * const imx214_test_pattern_menu[] = {
"Disabled",
"Color Bars",
"Solid Color",
"Grey Color Bars",
"PN9"
};
static const int imx214_test_pattern_val[] = {
IMX214_TEST_PATTERN_DISABLE,
IMX214_TEST_PATTERN_COLOR_BARS,
IMX214_TEST_PATTERN_SOLID_COLOR,
IMX214_TEST_PATTERN_GREY_COLOR,
IMX214_TEST_PATTERN_PN9,
};
struct imx214 {
struct device *dev;
struct clk *xclk;
struct regmap *regmap;
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_ctrl_handler ctrls;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *exposure;
struct v4l2_ctrl *unit_size;
struct {
struct v4l2_ctrl *hflip;
struct v4l2_ctrl *vflip;
};
struct regulator_bulk_data supplies[IMX214_NUM_SUPPLIES];
struct gpio_desc *enable_gpio;
};
/*From imx214_mode_tbls.h*/
static const struct cci_reg_sequence mode_4096x2304[] = {
{ IMX214_REG_HDR_MODE, IMX214_HDR_MODE_OFF },
{ IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH },
{ IMX214_REG_EXPOSURE_RATIO, 1 },
{ IMX214_REG_X_ADD_STA, 56 },
{ IMX214_REG_Y_ADD_STA, 408 },
{ IMX214_REG_X_ADD_END, 4151 },
{ IMX214_REG_Y_ADD_END, 2711 },
{ IMX214_REG_X_EVEN_INC, 1 },
{ IMX214_REG_X_ODD_INC, 1 },
{ IMX214_REG_Y_EVEN_INC, 1 },
{ IMX214_REG_Y_ODD_INC, 1 },
{ IMX214_REG_BINNING_MODE, IMX214_BINNING_NONE },
{ IMX214_REG_BINNING_TYPE, 0 },
{ IMX214_REG_BINNING_WEIGHTING, IMX214_BINNING_AVERAGE },
{ CCI_REG8(0x3000), 0x35 },
{ CCI_REG8(0x3054), 0x01 },
{ CCI_REG8(0x305C), 0x11 },
{ IMX214_REG_CSI_DATA_FORMAT, IMX214_CSI_DATA_FORMAT_RAW10 },
{ IMX214_REG_X_OUTPUT_SIZE, 4096 },
{ IMX214_REG_Y_OUTPUT_SIZE, 2304 },
{ IMX214_REG_SCALE_MODE, IMX214_SCALE_NONE },
{ IMX214_REG_SCALE_M, 2 },
{ IMX214_REG_DIG_CROP_X_OFFSET, 0 },
{ IMX214_REG_DIG_CROP_Y_OFFSET, 0 },
{ IMX214_REG_DIG_CROP_WIDTH, 4096 },
{ IMX214_REG_DIG_CROP_HEIGHT, 2304 },
{ IMX214_REG_VTPXCK_DIV, 5 },
{ IMX214_REG_VTSYCK_DIV, 2 },
{ IMX214_REG_PREPLLCK_VT_DIV, 3 },
{ IMX214_REG_PLL_VT_MPY, 150 },
{ IMX214_REG_OPPXCK_DIV, 10 },
{ IMX214_REG_OPSYCK_DIV, 1 },
{ IMX214_REG_PLL_MULT_DRIV, IMX214_PLL_SINGLE },
{ IMX214_REG_REQ_LINK_BIT_RATE, IMX214_LINK_BIT_RATE_MBPS(4800) },
{ CCI_REG8(0x3A03), 0x09 },
{ CCI_REG8(0x3A04), 0x50 },
{ CCI_REG8(0x3A05), 0x01 },
{ IMX214_REG_SING_DEF_CORR_EN, IMX214_SING_DEF_CORR_ON },
{ IMX214_REG_NML_NR_EN, IMX214_NML_NR_OFF },
{ CCI_REG8(0x30B4), 0x00 },
{ CCI_REG8(0x3A02), 0xFF },
{ CCI_REG8(0x3011), 0x00 },
{ IMX214_REG_STATS_OUT_EN, IMX214_STATS_OUT_ON },
{ IMX214_REG_SHORT_EXPOSURE, 500 },
{ CCI_REG8(0x4170), 0x00 },
{ CCI_REG8(0x4171), 0x10 },
{ CCI_REG8(0x4176), 0x00 },
{ CCI_REG8(0x4177), 0x3C },
{ CCI_REG8(0xAE20), 0x04 },
{ CCI_REG8(0xAE21), 0x5C },
};
static const struct cci_reg_sequence mode_1920x1080[] = {
{ IMX214_REG_HDR_MODE, IMX214_HDR_MODE_OFF },
{ IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH },
{ IMX214_REG_EXPOSURE_RATIO, 1 },
{ IMX214_REG_X_ADD_STA, 1144 },
{ IMX214_REG_Y_ADD_STA, 1020 },
{ IMX214_REG_X_ADD_END, 3063 },
{ IMX214_REG_Y_ADD_END, 2099 },
{ IMX214_REG_X_EVEN_INC, 1 },
{ IMX214_REG_X_ODD_INC, 1 },
{ IMX214_REG_Y_EVEN_INC, 1 },
{ IMX214_REG_Y_ODD_INC, 1 },
{ IMX214_REG_BINNING_MODE, IMX214_BINNING_NONE },
{ IMX214_REG_BINNING_TYPE, 0 },
{ IMX214_REG_BINNING_WEIGHTING, IMX214_BINNING_AVERAGE },
{ CCI_REG8(0x3000), 0x35 },
{ CCI_REG8(0x3054), 0x01 },
{ CCI_REG8(0x305C), 0x11 },
{ IMX214_REG_CSI_DATA_FORMAT, IMX214_CSI_DATA_FORMAT_RAW10 },
{ IMX214_REG_X_OUTPUT_SIZE, 1920 },
{ IMX214_REG_Y_OUTPUT_SIZE, 1080 },
{ IMX214_REG_SCALE_MODE, IMX214_SCALE_NONE },
{ IMX214_REG_SCALE_M, 2 },
{ IMX214_REG_DIG_CROP_X_OFFSET, 0 },
{ IMX214_REG_DIG_CROP_Y_OFFSET, 0 },
{ IMX214_REG_DIG_CROP_WIDTH, 1920 },
{ IMX214_REG_DIG_CROP_HEIGHT, 1080 },
{ IMX214_REG_VTPXCK_DIV, 5 },
{ IMX214_REG_VTSYCK_DIV, 2 },
{ IMX214_REG_PREPLLCK_VT_DIV, 3 },
{ IMX214_REG_PLL_VT_MPY, 150 },
{ IMX214_REG_OPPXCK_DIV, 10 },
{ IMX214_REG_OPSYCK_DIV, 1 },
{ IMX214_REG_PLL_MULT_DRIV, IMX214_PLL_SINGLE },
{ IMX214_REG_REQ_LINK_BIT_RATE, IMX214_LINK_BIT_RATE_MBPS(4800) },
{ CCI_REG8(0x3A03), 0x04 },
{ CCI_REG8(0x3A04), 0xF8 },
{ CCI_REG8(0x3A05), 0x02 },
{ IMX214_REG_SING_DEF_CORR_EN, IMX214_SING_DEF_CORR_ON },
{ IMX214_REG_NML_NR_EN, IMX214_NML_NR_OFF },
{ CCI_REG8(0x30B4), 0x00 },
{ CCI_REG8(0x3A02), 0xFF },
{ CCI_REG8(0x3011), 0x00 },
{ IMX214_REG_STATS_OUT_EN, IMX214_STATS_OUT_ON },
{ IMX214_REG_SHORT_EXPOSURE, 500 },
{ CCI_REG8(0x4170), 0x00 },
{ CCI_REG8(0x4171), 0x10 },
{ CCI_REG8(0x4176), 0x00 },
{ CCI_REG8(0x4177), 0x3C },
{ CCI_REG8(0xAE20), 0x04 },
{ CCI_REG8(0xAE21), 0x5C },
};
static const struct cci_reg_sequence mode_table_common[] = {
/* software reset */
/* software standby settings */
{ IMX214_REG_MODE_SELECT, IMX214_MODE_STANDBY },
/* ATR setting */
{ IMX214_REG_ATR_FAST_MOVE, 2 },
/* external clock setting */
{ IMX214_REG_EXCK_FREQ, IMX214_EXCK_FREQ(IMX214_DEFAULT_CLK_FREQ / 1000000) },
/* global setting */
/* basic config */
{ IMX214_REG_MASK_CORR_FRAMES, IMX214_CORR_FRAMES_MASK },
{ IMX214_REG_FAST_STANDBY_CTRL, 1 },
{ IMX214_REG_LINE_LENGTH_PCK, IMX214_PPL_DEFAULT },
{ CCI_REG8(0x4550), 0x02 },
{ CCI_REG8(0x4601), 0x00 },
{ CCI_REG8(0x4642), 0x05 },
{ CCI_REG8(0x6227), 0x11 },
{ CCI_REG8(0x6276), 0x00 },
{ CCI_REG8(0x900E), 0x06 },
{ CCI_REG8(0xA802), 0x90 },
{ CCI_REG8(0xA803), 0x11 },
{ CCI_REG8(0xA804), 0x62 },
{ CCI_REG8(0xA805), 0x77 },
{ CCI_REG8(0xA806), 0xAE },
{ CCI_REG8(0xA807), 0x34 },
{ CCI_REG8(0xA808), 0xAE },
{ CCI_REG8(0xA809), 0x35 },
{ CCI_REG8(0xA80A), 0x62 },
{ CCI_REG8(0xA80B), 0x83 },
{ CCI_REG8(0xAE33), 0x00 },
/* analog setting */
{ CCI_REG8(0x4174), 0x00 },
{ CCI_REG8(0x4175), 0x11 },
{ CCI_REG8(0x4612), 0x29 },
{ CCI_REG8(0x461B), 0x12 },
{ CCI_REG8(0x461F), 0x06 },
{ CCI_REG8(0x4635), 0x07 },
{ CCI_REG8(0x4637), 0x30 },
{ CCI_REG8(0x463F), 0x18 },
{ CCI_REG8(0x4641), 0x0D },
{ CCI_REG8(0x465B), 0x12 },
{ CCI_REG8(0x465F), 0x11 },
{ CCI_REG8(0x4663), 0x11 },
{ CCI_REG8(0x4667), 0x0F },
{ CCI_REG8(0x466F), 0x0F },
{ CCI_REG8(0x470E), 0x09 },
{ CCI_REG8(0x4909), 0xAB },
{ CCI_REG8(0x490B), 0x95 },
{ CCI_REG8(0x4915), 0x5D },
{ CCI_REG8(0x4A5F), 0xFF },
{ CCI_REG8(0x4A61), 0xFF },
{ CCI_REG8(0x4A73), 0x62 },
{ CCI_REG8(0x4A85), 0x00 },
{ CCI_REG8(0x4A87), 0xFF },
/* embedded data */
{ IMX214_REG_EBD_SIZE_V, IMX214_EBD_4_LINE },
{ CCI_REG8(0x583C), 0x04 },
{ CCI_REG8(0x620E), 0x04 },
{ CCI_REG8(0x6EB2), 0x01 },
{ CCI_REG8(0x6EB3), 0x00 },
{ IMX214_REG_ATR_FAST_MOVE, 2 },
/* imagequality */
/* HDR setting */
{ IMX214_REG_RMSC_NR_MODE, 0x07 },
{ IMX214_REG_RG_STATS_LMT, IMX214_RG_STATS_LMT_14_BIT },
{ CCI_REG8(0x9344), 0x03 },
{ CCI_REG8(0x9706), 0x10 },
{ CCI_REG8(0x9707), 0x03 },
{ CCI_REG8(0x9708), 0x03 },
{ CCI_REG8(0x9E04), 0x01 },
{ CCI_REG8(0x9E05), 0x00 },
{ CCI_REG8(0x9E0C), 0x01 },
{ CCI_REG8(0x9E0D), 0x02 },
{ CCI_REG8(0x9E24), 0x00 },
{ CCI_REG8(0x9E25), 0x8C },
{ CCI_REG8(0x9E26), 0x00 },
{ CCI_REG8(0x9E27), 0x94 },
{ CCI_REG8(0x9E28), 0x00 },
{ CCI_REG8(0x9E29), 0x96 },
/* CNR parameter setting */
{ CCI_REG8(0x69DB), 0x01 },
/* Moire reduction */
{ CCI_REG8(0x6957), 0x01 },
/* image enhancement */
{ CCI_REG8(0x6987), 0x17 },
{ CCI_REG8(0x698A), 0x03 },
{ CCI_REG8(0x698B), 0x03 },
/* white balanace */
{ IMX214_REG_ABS_GAIN_GREENR, 0x0100 },
{ IMX214_REG_ABS_GAIN_RED, 0x0100 },
{ IMX214_REG_ABS_GAIN_BLUE, 0x0100 },
{ IMX214_REG_ABS_GAIN_GREENB, 0x0100 },
/* ATR setting */
{ CCI_REG8(0x6E50), 0x00 },
{ CCI_REG8(0x6E51), 0x32 },
{ CCI_REG8(0x9340), 0x00 },
{ CCI_REG8(0x9341), 0x3C },
{ CCI_REG8(0x9342), 0x03 },
{ CCI_REG8(0x9343), 0xFF },
};
/*
* Declare modes in order, from biggest
* to smallest height.
*/
static const struct imx214_mode {
u32 width;
u32 height;
/* V-timing */
unsigned int vts_def;
unsigned int num_of_regs;
const struct cci_reg_sequence *reg_table;
} imx214_modes[] = {
{
.width = 4096,
.height = 2304,
.vts_def = 3194,
.num_of_regs = ARRAY_SIZE(mode_4096x2304),
.reg_table = mode_4096x2304,
},
{
.width = 1920,
.height = 1080,
.vts_def = 3194,
.num_of_regs = ARRAY_SIZE(mode_1920x1080),
.reg_table = mode_1920x1080,
},
};
static inline struct imx214 *to_imx214(struct v4l2_subdev *sd)
{
return container_of(sd, struct imx214, sd);
}
static int __maybe_unused imx214_power_on(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx214 *imx214 = to_imx214(sd);
int ret;
ret = regulator_bulk_enable(IMX214_NUM_SUPPLIES, imx214->supplies);
if (ret < 0) {
dev_err(imx214->dev, "failed to enable regulators: %d\n", ret);
return ret;
}
usleep_range(2000, 3000);
ret = clk_prepare_enable(imx214->xclk);
if (ret < 0) {
regulator_bulk_disable(IMX214_NUM_SUPPLIES, imx214->supplies);
dev_err(imx214->dev, "clk prepare enable failed\n");
return ret;
}
gpiod_set_value_cansleep(imx214->enable_gpio, 1);
usleep_range(12000, 15000);
return 0;
}
static int __maybe_unused imx214_power_off(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx214 *imx214 = to_imx214(sd);
gpiod_set_value_cansleep(imx214->enable_gpio, 0);
clk_disable_unprepare(imx214->xclk);
regulator_bulk_disable(IMX214_NUM_SUPPLIES, imx214->supplies);
usleep_range(10, 20);
return 0;
}
/* Get bayer order based on flip setting. */
static u32 imx214_get_format_code(struct imx214 *imx214)
{
unsigned int i;
i = (imx214->vflip->val ? 2 : 0) | (imx214->hflip->val ? 1 : 0);
return imx214_mbus_formats[i];
}
static void imx214_update_pad_format(struct imx214 *imx214,
const struct imx214_mode *mode,
struct v4l2_mbus_framefmt *fmt, u32 code)
{
fmt->code = imx214_get_format_code(imx214);
fmt->width = mode->width;
fmt->height = mode->height;
fmt->field = V4L2_FIELD_NONE;
fmt->colorspace = V4L2_COLORSPACE_SRGB;
fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
fmt->colorspace,
fmt->ycbcr_enc);
fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
}
static int imx214_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
struct imx214 *imx214 = to_imx214(sd);
if (code->index >= (ARRAY_SIZE(imx214_mbus_formats) / 4))
return -EINVAL;
code->code = imx214_get_format_code(imx214);
return 0;
}
static int imx214_enum_frame_size(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct imx214 *imx214 = to_imx214(subdev);
u32 code;
code = imx214_get_format_code(imx214);
if (fse->code != code)
return -EINVAL;
if (fse->index >= ARRAY_SIZE(imx214_modes))
return -EINVAL;
fse->min_width = fse->max_width = imx214_modes[fse->index].width;
fse->min_height = fse->max_height = imx214_modes[fse->index].height;
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int imx214_s_register(struct v4l2_subdev *subdev,
const struct v4l2_dbg_register *reg)
{
struct imx214 *imx214 = container_of(subdev, struct imx214, sd);
return regmap_write(imx214->regmap, reg->reg, reg->val);
}
static int imx214_g_register(struct v4l2_subdev *subdev,
struct v4l2_dbg_register *reg)
{
struct imx214 *imx214 = container_of(subdev, struct imx214, sd);
unsigned int aux;
int ret;
reg->size = 1;
ret = regmap_read(imx214->regmap, reg->reg, &aux);
reg->val = aux;
return ret;
}
#endif
static const struct v4l2_subdev_core_ops imx214_core_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = imx214_g_register,
.s_register = imx214_s_register,
#endif
};
static int imx214_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct imx214 *imx214 = to_imx214(sd);
struct v4l2_mbus_framefmt *__format;
struct v4l2_rect *__crop;
const struct imx214_mode *mode;
mode = v4l2_find_nearest_size(imx214_modes,
ARRAY_SIZE(imx214_modes), width, height,
format->format.width,
format->format.height);
imx214_update_pad_format(imx214, mode, &format->format,
format->format.code);
__format = v4l2_subdev_state_get_format(sd_state, 0);
*__format = format->format;
__crop = v4l2_subdev_state_get_crop(sd_state, 0);
__crop->width = mode->width;
__crop->height = mode->height;
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
int exposure_max;
int exposure_def;
int hblank;
/* Update blank limits */
__v4l2_ctrl_modify_range(imx214->vblank, IMX214_VBLANK_MIN,
IMX214_VTS_MAX - mode->height, 2,
mode->vts_def - mode->height);
/* Update max exposure while meeting expected vblanking */
exposure_max = mode->vts_def - IMX214_EXPOSURE_OFFSET;
exposure_def = min(exposure_max, IMX214_EXPOSURE_DEFAULT);
__v4l2_ctrl_modify_range(imx214->exposure,
imx214->exposure->minimum,
exposure_max, imx214->exposure->step,
exposure_def);
/*
* Currently PPL is fixed to IMX214_PPL_DEFAULT, so hblank
* depends on mode->width only, and is not changeable in any
* way other than changing the mode.
*/
hblank = IMX214_PPL_DEFAULT - mode->width;
__v4l2_ctrl_modify_range(imx214->hblank, hblank, hblank, 1,
hblank);
}
return 0;
}
static int imx214_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r = *v4l2_subdev_state_get_crop(sd_state, 0);
return 0;
case V4L2_SEL_TGT_NATIVE_SIZE:
sel->r.top = 0;
sel->r.left = 0;
sel->r.width = IMX214_NATIVE_WIDTH;
sel->r.height = IMX214_NATIVE_HEIGHT;
return 0;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
sel->r.top = IMX214_PIXEL_ARRAY_TOP;
sel->r.left = IMX214_PIXEL_ARRAY_LEFT;
sel->r.width = IMX214_PIXEL_ARRAY_WIDTH;
sel->r.height = IMX214_PIXEL_ARRAY_HEIGHT;
return 0;
}
return -EINVAL;
}
static int imx214_entity_init_state(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state)
{
struct v4l2_subdev_format fmt = { };
fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
fmt.format.code = MEDIA_BUS_FMT_SRGGB10_1X10;
fmt.format.width = imx214_modes[0].width;
fmt.format.height = imx214_modes[0].height;
imx214_set_format(subdev, sd_state, &fmt);
return 0;
}
static int imx214_update_digital_gain(struct imx214 *imx214, u32 val)
{
int ret = 0;
cci_write(imx214->regmap, IMX214_REG_DIG_GAIN_GREENR, val, &ret);
cci_write(imx214->regmap, IMX214_REG_DIG_GAIN_RED, val, &ret);
cci_write(imx214->regmap, IMX214_REG_DIG_GAIN_BLUE, val, &ret);
cci_write(imx214->regmap, IMX214_REG_DIG_GAIN_GREENB, val, &ret);
return ret;
}
static int imx214_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct imx214 *imx214 = container_of(ctrl->handler,
struct imx214, ctrls);
const struct v4l2_mbus_framefmt *format = NULL;
struct v4l2_subdev_state *state;
int ret = 0;
if (ctrl->id == V4L2_CID_VBLANK) {
int exposure_max, exposure_def;
state = v4l2_subdev_get_locked_active_state(&imx214->sd);
format = v4l2_subdev_state_get_format(state, 0);
/* Update max exposure while meeting expected vblanking */
exposure_max =
format->height + ctrl->val - IMX214_EXPOSURE_OFFSET;
exposure_def = min(exposure_max, IMX214_EXPOSURE_DEFAULT);
__v4l2_ctrl_modify_range(imx214->exposure,
imx214->exposure->minimum,
exposure_max, imx214->exposure->step,
exposure_def);
}
/*
* Applying V4L2 control value only happens
* when power is up for streaming
*/
if (!pm_runtime_get_if_in_use(imx214->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_ANALOGUE_GAIN:
cci_write(imx214->regmap, IMX214_REG_ANALOG_GAIN,
ctrl->val, &ret);
cci_write(imx214->regmap, IMX214_REG_SHORT_ANALOG_GAIN,
ctrl->val, &ret);
break;
case V4L2_CID_DIGITAL_GAIN:
ret = imx214_update_digital_gain(imx214, ctrl->val);
break;
case V4L2_CID_EXPOSURE:
cci_write(imx214->regmap, IMX214_REG_EXPOSURE, ctrl->val, &ret);
break;
case V4L2_CID_HFLIP:
case V4L2_CID_VFLIP:
cci_write(imx214->regmap, IMX214_REG_ORIENTATION,
imx214->hflip->val | imx214->vflip->val << 1, &ret);
break;
case V4L2_CID_VBLANK:
cci_write(imx214->regmap, IMX214_REG_FRM_LENGTH_LINES,
format->height + ctrl->val, &ret);
break;
case V4L2_CID_TEST_PATTERN:
cci_write(imx214->regmap, IMX214_REG_TEST_PATTERN,
imx214_test_pattern_val[ctrl->val], &ret);
break;
case V4L2_CID_TEST_PATTERN_RED:
cci_write(imx214->regmap, IMX214_REG_TESTP_RED,
ctrl->val, &ret);
break;
case V4L2_CID_TEST_PATTERN_GREENR:
cci_write(imx214->regmap, IMX214_REG_TESTP_GREENR,
ctrl->val, &ret);
break;
case V4L2_CID_TEST_PATTERN_BLUE:
cci_write(imx214->regmap, IMX214_REG_TESTP_BLUE,
ctrl->val, &ret);
break;
case V4L2_CID_TEST_PATTERN_GREENB:
cci_write(imx214->regmap, IMX214_REG_TESTP_GREENB,
ctrl->val, &ret);
break;
default:
ret = -EINVAL;
}
pm_runtime_put(imx214->dev);
return ret;
}
static const struct v4l2_ctrl_ops imx214_ctrl_ops = {
.s_ctrl = imx214_set_ctrl,
};
static int imx214_ctrls_init(struct imx214 *imx214)
{
static const s64 link_freq[] = {
IMX214_DEFAULT_LINK_FREQ
};
static const struct v4l2_area unit_size = {
.width = 1120,
.height = 1120,
};
const struct imx214_mode *mode = &imx214_modes[0];
struct v4l2_fwnode_device_properties props;
struct v4l2_ctrl_handler *ctrl_hdlr;
int exposure_max, exposure_def;
int hblank;
int i, ret;
ret = v4l2_fwnode_device_parse(imx214->dev, &props);
if (ret < 0)
return ret;
ctrl_hdlr = &imx214->ctrls;
ret = v4l2_ctrl_handler_init(&imx214->ctrls, 13);
if (ret)
return ret;
imx214->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, NULL,
V4L2_CID_PIXEL_RATE, 0,
IMX214_DEFAULT_PIXEL_RATE, 1,
IMX214_DEFAULT_PIXEL_RATE);
imx214->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, NULL,
V4L2_CID_LINK_FREQ,
ARRAY_SIZE(link_freq) - 1,
0, link_freq);
if (imx214->link_freq)
imx214->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
/*
* WARNING!
* Values obtained reverse engineering blobs and/or devices.
* Ranges and functionality might be wrong.
*
* Sony, please release some register set documentation for the
* device.
*
* Yours sincerely, Ricardo.
*/
/* Initial vblank/hblank/exposure parameters based on current mode */
imx214->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops,
V4L2_CID_VBLANK, IMX214_VBLANK_MIN,
IMX214_VTS_MAX - mode->height, 2,
mode->vts_def - mode->height);
hblank = IMX214_PPL_DEFAULT - mode->width;
imx214->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops,
V4L2_CID_HBLANK, hblank, hblank,
1, hblank);
if (imx214->hblank)
imx214->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
exposure_max = mode->vts_def - IMX214_EXPOSURE_OFFSET;
exposure_def = min(exposure_max, IMX214_EXPOSURE_DEFAULT);
imx214->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops,
V4L2_CID_EXPOSURE,
IMX214_EXPOSURE_MIN,
exposure_max,
IMX214_EXPOSURE_STEP,
exposure_def);
v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
IMX214_ANA_GAIN_MIN, IMX214_ANA_GAIN_MAX,
IMX214_ANA_GAIN_STEP, IMX214_ANA_GAIN_DEFAULT);
v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
IMX214_DGTL_GAIN_MIN, IMX214_DGTL_GAIN_MAX,
IMX214_DGTL_GAIN_STEP, IMX214_DGTL_GAIN_DEFAULT);
imx214->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
if (imx214->hflip)
imx214->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
imx214->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
if (imx214->vflip)
imx214->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
v4l2_ctrl_cluster(2, &imx214->hflip);
v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx214_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(imx214_test_pattern_menu) - 1,
0, 0, imx214_test_pattern_menu);
for (i = 0; i < 4; i++) {
/*
* The assumption is that
* V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
* V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2
* V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
*/
v4l2_ctrl_new_std(ctrl_hdlr, &imx214_ctrl_ops,
V4L2_CID_TEST_PATTERN_RED + i,
IMX214_TESTP_COLOUR_MIN,
IMX214_TESTP_COLOUR_MAX,
IMX214_TESTP_COLOUR_STEP,
IMX214_TESTP_COLOUR_MAX);
/* The "Solid color" pattern is white by default */
}
imx214->unit_size = v4l2_ctrl_new_std_compound(ctrl_hdlr,
NULL,
V4L2_CID_UNIT_CELL_SIZE,
v4l2_ctrl_ptr_create((void *)&unit_size),
v4l2_ctrl_ptr_create(NULL),
v4l2_ctrl_ptr_create(NULL));
v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx214_ctrl_ops, &props);
ret = ctrl_hdlr->error;
if (ret) {
v4l2_ctrl_handler_free(ctrl_hdlr);
dev_err(imx214->dev, "failed to add controls: %d\n", ret);
return ret;
}
imx214->sd.ctrl_handler = ctrl_hdlr;
return 0;
};
static int imx214_start_streaming(struct imx214 *imx214)
{
const struct v4l2_mbus_framefmt *fmt;
struct v4l2_subdev_state *state;
const struct imx214_mode *mode;
int ret;
ret = cci_multi_reg_write(imx214->regmap, mode_table_common,
ARRAY_SIZE(mode_table_common), NULL);
if (ret < 0) {
dev_err(imx214->dev, "could not sent common table %d\n", ret);
return ret;
}
ret = cci_write(imx214->regmap, IMX214_REG_CSI_LANE_MODE,
IMX214_CSI_4_LANE_MODE, NULL);
if (ret) {
dev_err(imx214->dev, "failed to configure lanes\n");
return ret;
}
state = v4l2_subdev_get_locked_active_state(&imx214->sd);
fmt = v4l2_subdev_state_get_format(state, 0);
mode = v4l2_find_nearest_size(imx214_modes, ARRAY_SIZE(imx214_modes),
width, height, fmt->width, fmt->height);
ret = cci_multi_reg_write(imx214->regmap, mode->reg_table,
mode->num_of_regs, NULL);
if (ret < 0) {
dev_err(imx214->dev, "could not sent mode table %d\n", ret);
return ret;
}
usleep_range(10000, 10500);
cci_write(imx214->regmap, IMX214_REG_TEMP_SENSOR_CONTROL, 0x01, NULL);
ret = __v4l2_ctrl_handler_setup(&imx214->ctrls);
if (ret < 0) {
dev_err(imx214->dev, "could not sync v4l2 controls\n");
return ret;
}
ret = cci_write(imx214->regmap, IMX214_REG_MODE_SELECT,
IMX214_MODE_STREAMING, NULL);
if (ret < 0)
dev_err(imx214->dev, "could not sent start table %d\n", ret);
return ret;
}
static int imx214_stop_streaming(struct imx214 *imx214)
{
int ret;
ret = cci_write(imx214->regmap, IMX214_REG_MODE_SELECT,
IMX214_MODE_STANDBY, NULL);
if (ret < 0)
dev_err(imx214->dev, "could not sent stop table %d\n", ret);
return ret;
}
static int imx214_s_stream(struct v4l2_subdev *subdev, int enable)
{
struct imx214 *imx214 = to_imx214(subdev);
struct v4l2_subdev_state *state;
int ret;
if (enable) {
ret = pm_runtime_resume_and_get(imx214->dev);
if (ret < 0)
return ret;
state = v4l2_subdev_lock_and_get_active_state(subdev);
ret = imx214_start_streaming(imx214);
v4l2_subdev_unlock_state(state);
if (ret < 0)
goto err_rpm_put;
} else {
ret = imx214_stop_streaming(imx214);
if (ret < 0)
goto err_rpm_put;
pm_runtime_put(imx214->dev);
}
return 0;
err_rpm_put:
pm_runtime_put(imx214->dev);
return ret;
}
static int imx214_get_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *fival)
{
/*
* FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
* subdev active state API.
*/
if (fival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
fival->interval.numerator = 1;
fival->interval.denominator = IMX214_FPS;
return 0;
}
/*
* Raw sensors should be using the VBLANK and HBLANK controls to determine
* the frame rate. However this driver was initially added using the
* [S|G|ENUM]_FRAME_INTERVAL ioctls with a fixed rate of 30fps.
* Retain the frame_interval ops for backwards compatibility, but they do
* nothing.
*/
static int imx214_enum_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval_enum *fie)
{
struct imx214 *imx214 = to_imx214(subdev);
const struct imx214_mode *mode;
dev_warn_once(imx214->dev, "frame_interval functions return an unreliable value for compatibility reasons. Use the VBLANK and HBLANK controls to determine the correct frame rate.\n");
if (fie->index != 0)
return -EINVAL;
mode = v4l2_find_nearest_size(imx214_modes,
ARRAY_SIZE(imx214_modes), width, height,
fie->width, fie->height);
fie->code = imx214_get_format_code(imx214);
fie->width = mode->width;
fie->height = mode->height;
fie->interval.numerator = 1;
fie->interval.denominator = IMX214_FPS;
return 0;
}
static const struct v4l2_subdev_video_ops imx214_video_ops = {
.s_stream = imx214_s_stream,
};
static const struct v4l2_subdev_pad_ops imx214_subdev_pad_ops = {
.enum_mbus_code = imx214_enum_mbus_code,
.enum_frame_size = imx214_enum_frame_size,
.enum_frame_interval = imx214_enum_frame_interval,
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = imx214_set_format,
.get_selection = imx214_get_selection,
.get_frame_interval = imx214_get_frame_interval,
.set_frame_interval = imx214_get_frame_interval,
};
static const struct v4l2_subdev_ops imx214_subdev_ops = {
.core = &imx214_core_ops,
.video = &imx214_video_ops,
.pad = &imx214_subdev_pad_ops,
};
static const struct v4l2_subdev_internal_ops imx214_internal_ops = {
.init_state = imx214_entity_init_state,
};
static int imx214_get_regulators(struct device *dev, struct imx214 *imx214)
{
unsigned int i;
for (i = 0; i < IMX214_NUM_SUPPLIES; i++)
imx214->supplies[i].supply = imx214_supply_name[i];
return devm_regulator_bulk_get(dev, IMX214_NUM_SUPPLIES,
imx214->supplies);
}
/* Verify chip ID */
static int imx214_identify_module(struct imx214 *imx214)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx214->sd);
int ret;
u64 val;
ret = cci_read(imx214->regmap, IMX214_REG_CHIP_ID, &val, NULL);
if (ret)
return dev_err_probe(&client->dev, ret,
"failed to read chip id %x\n",
IMX214_CHIP_ID);
if (val != IMX214_CHIP_ID)
return dev_err_probe(&client->dev, -EIO,
"chip id mismatch: %x!=%llx\n",
IMX214_CHIP_ID, val);
return 0;
}
static int imx214_parse_fwnode(struct device *dev)
{
struct fwnode_handle *endpoint;
struct v4l2_fwnode_endpoint bus_cfg = {
.bus_type = V4L2_MBUS_CSI2_DPHY,
};
unsigned int i;
int ret;
endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
if (!endpoint)
return dev_err_probe(dev, -EINVAL, "endpoint node not found\n");
ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg);
if (ret) {
dev_err_probe(dev, ret, "parsing endpoint node failed\n");
goto done;
}
/* Check the number of MIPI CSI2 data lanes */
if (bus_cfg.bus.mipi_csi2.num_data_lanes != 4) {
ret = dev_err_probe(dev, -EINVAL,
"only 4 data lanes are currently supported\n");
goto done;
}
if (bus_cfg.nr_of_link_frequencies != 1)
dev_warn(dev, "Only one link-frequency supported, please review your DT. Continuing anyway\n");
for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
if (bus_cfg.link_frequencies[i] == IMX214_DEFAULT_LINK_FREQ)
break;
if (bus_cfg.link_frequencies[i] ==
IMX214_DEFAULT_LINK_FREQ_LEGACY) {
dev_warn(dev,
"link-frequencies %d not supported, please review your DT. Continuing anyway\n",
IMX214_DEFAULT_LINK_FREQ);
break;
}
}
if (i == bus_cfg.nr_of_link_frequencies)
ret = dev_err_probe(dev, -EINVAL,
"link-frequencies %d not supported, please review your DT\n",
IMX214_DEFAULT_LINK_FREQ);
done:
v4l2_fwnode_endpoint_free(&bus_cfg);
fwnode_handle_put(endpoint);
return ret;
}
static int imx214_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct imx214 *imx214;
int ret;
ret = imx214_parse_fwnode(dev);
if (ret)
return ret;
imx214 = devm_kzalloc(dev, sizeof(*imx214), GFP_KERNEL);
if (!imx214)
return -ENOMEM;
imx214->dev = dev;
imx214->xclk = devm_clk_get(dev, NULL);
if (IS_ERR(imx214->xclk))
return dev_err_probe(dev, PTR_ERR(imx214->xclk),
"failed to get xclk\n");
ret = clk_set_rate(imx214->xclk, IMX214_DEFAULT_CLK_FREQ);
if (ret)
return dev_err_probe(dev, ret,
"failed to set xclk frequency\n");
ret = imx214_get_regulators(dev, imx214);
if (ret < 0)
return dev_err_probe(dev, ret, "failed to get regulators\n");
imx214->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
if (IS_ERR(imx214->enable_gpio))
return dev_err_probe(dev, PTR_ERR(imx214->enable_gpio),
"failed to get enable gpio\n");
imx214->regmap = devm_cci_regmap_init_i2c(client, 16);
if (IS_ERR(imx214->regmap))
return dev_err_probe(dev, PTR_ERR(imx214->regmap),
"failed to initialize CCI\n");
v4l2_i2c_subdev_init(&imx214->sd, client, &imx214_subdev_ops);
imx214->sd.internal_ops = &imx214_internal_ops;
/*
* Enable power initially, to avoid warnings
* from clk_disable on power_off
*/
imx214_power_on(imx214->dev);
ret = imx214_identify_module(imx214);
if (ret)
goto error_power_off;
ret = imx214_ctrls_init(imx214);
if (ret < 0)
goto error_power_off;
imx214->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
imx214->pad.flags = MEDIA_PAD_FL_SOURCE;
imx214->sd.dev = &client->dev;
imx214->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&imx214->sd.entity, 1, &imx214->pad);
if (ret < 0) {
dev_err_probe(dev, ret, "failed to init entity pads\n");
goto free_ctrl;
}
imx214->sd.state_lock = imx214->ctrls.lock;
ret = v4l2_subdev_init_finalize(&imx214->sd);
if (ret < 0) {
dev_err_probe(dev, ret, "subdev init error\n");
goto free_entity;
}
pm_runtime_set_active(imx214->dev);
pm_runtime_enable(imx214->dev);
ret = v4l2_async_register_subdev_sensor(&imx214->sd);
if (ret < 0) {
dev_err_probe(dev, ret,
"failed to register sensor sub-device\n");
goto error_subdev_cleanup;
}
pm_runtime_idle(imx214->dev);
return 0;
error_subdev_cleanup:
pm_runtime_disable(imx214->dev);
pm_runtime_set_suspended(&client->dev);
v4l2_subdev_cleanup(&imx214->sd);
free_entity:
media_entity_cleanup(&imx214->sd.entity);
free_ctrl:
v4l2_ctrl_handler_free(&imx214->ctrls);
error_power_off:
imx214_power_off(imx214->dev);
return ret;
}
static void imx214_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx214 *imx214 = to_imx214(sd);
v4l2_async_unregister_subdev(&imx214->sd);
v4l2_subdev_cleanup(sd);
media_entity_cleanup(&imx214->sd.entity);
v4l2_ctrl_handler_free(&imx214->ctrls);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev)) {
imx214_power_off(imx214->dev);
pm_runtime_set_suspended(&client->dev);
}
}
static const struct of_device_id imx214_of_match[] = {
{ .compatible = "sony,imx214" },
{ }
};
MODULE_DEVICE_TABLE(of, imx214_of_match);
static const struct dev_pm_ops imx214_pm_ops = {
SET_RUNTIME_PM_OPS(imx214_power_off, imx214_power_on, NULL)
};
static struct i2c_driver imx214_i2c_driver = {
.driver = {
.of_match_table = imx214_of_match,
.pm = &imx214_pm_ops,
.name = "imx214",
},
.probe = imx214_probe,
.remove = imx214_remove,
};
module_i2c_driver(imx214_i2c_driver);
MODULE_DESCRIPTION("Sony IMX214 Camera driver");
MODULE_AUTHOR("Ricardo Ribalda <ribalda@kernel.org>");
MODULE_LICENSE("GPL v2");
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