[PATCH v3 3/6] media: imx335: Use V4L2 CCI for accessing sensor registers

From: Umang Jain
Date: Tue Mar 19 2024 - 03:28:23 EST

Use the new comon CCI register access helpers to replace the private
register access helpers in the imx335 driver.

Select V4L2_CCI_I2C Kconfig option which the imx335 driver now
depends on.

Signed-off-by: Umang Jain <umang.jain@xxxxxxxxxxxxxxxx>
---
drivers/media/i2c/Kconfig | 1 +
drivers/media/i2c/imx335.c | 593 ++++++++++++++++---------------------
2 files changed, 263 insertions(+), 331 deletions(-)

diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index e4da68835683..c1f6d882efae 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -205,6 +205,7 @@ config VIDEO_IMX334
config VIDEO_IMX335
tristate "Sony IMX335 sensor support"
depends on OF_GPIO
+ select V4L2_CCI_I2C
help
This is a Video4Linux2 sensor driver for the Sony
IMX335 camera.
diff --git a/drivers/media/i2c/imx335.c b/drivers/media/i2c/imx335.c
index b8cf85984127..ae4341644a84 100644
--- a/drivers/media/i2c/imx335.c
+++ b/drivers/media/i2c/imx335.c
@@ -11,62 +11,104 @@
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
+#include <linux/regmap.h>

+#include <media/v4l2-cci.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>

/* Streaming Mode */
-#define IMX335_REG_MODE_SELECT 0x3000
-#define IMX335_MODE_STANDBY 0x01
-#define IMX335_MODE_STREAMING 0x00
+#define IMX335_REG_MODE_SELECT CCI_REG8(0x3000)
+#define IMX335_MODE_STANDBY 0x01
+#define IMX335_MODE_STREAMING 0x00

-/* Data Lanes */
-#define IMX335_LANEMODE 0x3a01
-#define IMX335_2LANE 1
-#define IMX335_4LANE 3
+/* Group hold register */
+#define IMX335_REG_HOLD CCI_REG8(0x3001)
+
+#define IMX335_REG_MASTER_MODE CCI_REG8(0x3002)
+#define IMX335_REG_BCWAIT_TIME CCI_REG8(0x300c)
+#define IMX335_REG_CPWAIT_TIME CCI_REG8(0x300d)
+#define IMX335_REG_WINMODE CCI_REG8(0x3018)
+#define IMX335_REG_HTRIMMING_START CCI_REG16_LE(0x302c)
+#define IMX335_REG_HNUM CCI_REG8(0x302e)

/* Lines per frame */
-#define IMX335_REG_LPFR 0x3030
+#define IMX335_REG_VMAX CCI_REG24_LE(0x3030)

-/* Chip ID */
-#define IMX335_REG_ID 0x3912
-#define IMX335_ID 0x00
+#define IMX335_REG_OPB_SIZE_V CCI_REG8(0x304c)
+#define IMX335_REG_ADBIT CCI_REG8(0x3050)
+#define IMX335_REG_Y_OUT_SIZE CCI_REG16_LE(0x3056)

-/* Exposure control */
-#define IMX335_REG_SHUTTER 0x3058
-#define IMX335_EXPOSURE_MIN 1
-#define IMX335_EXPOSURE_OFFSET 9
-#define IMX335_EXPOSURE_STEP 1
-#define IMX335_EXPOSURE_DEFAULT 0x0648
+#define IMX335_REG_SHUTTER CCI_REG24_LE(0x3058)
+#define IMX335_EXPOSURE_MIN 1
+#define IMX335_EXPOSURE_OFFSET 9
+#define IMX335_EXPOSURE_STEP 1
+#define IMX335_EXPOSURE_DEFAULT 0x0648

-/* Analog gain control */
-#define IMX335_REG_AGAIN 0x30e8
-#define IMX335_AGAIN_MIN 0
-#define IMX335_AGAIN_MAX 240
-#define IMX335_AGAIN_STEP 1
-#define IMX335_AGAIN_DEFAULT 0
+#define IMX335_REG_AREA3_ST_ADR_1 CCI_REG16_LE(0x3074)
+#define IMX335_REG_AREA3_WIDTH_1 CCI_REG16_LE(0x3076)

-/* Group hold register */
-#define IMX335_REG_HOLD 0x3001
+/* Analog gain control */
+#define IMX335_REG_AGAIN CCI_REG8(0x30e8)
+#define IMX335_AGAIN_MIN 0
+#define IMX335_AGAIN_MAX 240
+#define IMX335_AGAIN_STEP 1
+#define IMX335_AGAIN_DEFAULT 0
+
+#define IMX335_REG_TPG_TESTCLKEN CCI_REG8(0x3148)
+#define IMX335_REG_INCLKSEL1 CCI_REG16_LE(0x314c)
+#define IMX335_REG_INCLKSEL2 CCI_REG8(0x315a)
+#define IMX335_REG_INCLKSEL3 CCI_REG8(0x3168)
+#define IMX335_REG_INCLKSEL4 CCI_REG8(0x316a)
+#define IMX335_REG_MDBIT CCI_REG8(0x319d)
+#define IMX335_REG_SYSMODE CCI_REG8(0x319e)
+
+#define IMX335_REG_XVS_XHS_DRV CCI_REG8(0x31a1)

/* Test pattern generator */
-#define IMX335_REG_TPG 0x329e
-#define IMX335_TPG_ALL_000 0
-#define IMX335_TPG_ALL_FFF 1
-#define IMX335_TPG_ALL_555 2
-#define IMX335_TPG_ALL_AAA 3
-#define IMX335_TPG_TOG_555_AAA 4
-#define IMX335_TPG_TOG_AAA_555 5
-#define IMX335_TPG_TOG_000_555 6
-#define IMX335_TPG_TOG_555_000 7
-#define IMX335_TPG_TOG_000_FFF 8
-#define IMX335_TPG_TOG_FFF_000 9
-#define IMX335_TPG_H_COLOR_BARS 10
-#define IMX335_TPG_V_COLOR_BARS 11
+#define IMX335_REG_TPG_DIG_CLP_MODE CCI_REG8(0x3280)
+#define IMX335_REG_TPG_EN_DUOUT CCI_REG8(0x329c)
+#define IMX335_REG_TPG CCI_REG8(0x329e)
+#define IMX335_REG_TPG_COLORWIDTH CCI_REG8(0x32a0)
+#define IMX335_REG_TPG_BLKLEVEL CCI_REG16_LE(0x3302)
+#define IMX335_REG_TPG_WRJ_OPEN CCI_REG8(0x336c)
+#define IMX335_TPG_ALL_000 0
+#define IMX335_TPG_ALL_FFF 1
+#define IMX335_TPG_ALL_555 2
+#define IMX335_TPG_ALL_AAA 3
+#define IMX335_TPG_TOG_555_AAA 4
+#define IMX335_TPG_TOG_AAA_555 5
+#define IMX335_TPG_TOG_000_555 6
+#define IMX335_TPG_TOG_555_000 7
+#define IMX335_TPG_TOG_000_FFF 8
+#define IMX335_TPG_TOG_FFF_000 9
+#define IMX335_TPG_H_COLOR_BARS 10
+#define IMX335_TPG_V_COLOR_BARS 11
+
+#define IMX335_REG_ADBIT1 CCI_REG16_LE(0x341c)
+
+/* Chip ID */
+#define IMX335_REG_ID CCI_REG8(0x3912)
+#define IMX335_ID 0x00
+
+/* Data Lanes */
+#define IMX335_REG_LANEMODE CCI_REG8(0x3a01)
+#define IMX335_2LANE 1
+#define IMX335_4LANE 3
+
+#define IMX335_REG_TCLKPOST CCI_REG16_LE(0x3a18)
+#define IMX335_REG_TCLKPREPARE CCI_REG16_LE(0x3a1a)
+#define IMX335_REG_TCLK_TRAIL CCI_REG16_LE(0x3a1c)
+#define IMX335_REG_TCLK_ZERO CCI_REG16_LE(0x3a1e)
+#define IMX335_REG_THS_PREPARE CCI_REG16_LE(0x3a20)
+#define IMX335_REG_THS_ZERO CCI_REG16_LE(0x3a22)
+#define IMX335_REG_THS_TRAIL CCI_REG16_LE(0x3a24)
+#define IMX335_REG_THS_EXIT CCI_REG16_LE(0x3a26)
+#define IMX335_REG_TPLX CCI_REG16_LE(0x3a28)

/* Input clock rate */
-#define IMX335_INCLK_RATE 24000000
+#define IMX335_INCLK_RATE 24000000

/* CSI2 HW configuration */
#define IMX335_LINK_FREQ_594MHz 594000000LL
@@ -74,9 +116,6 @@

#define IMX335_NUM_DATA_LANES 4

-#define IMX335_REG_MIN 0x00
-#define IMX335_REG_MAX 0xfffff
-
/* IMX335 native and active pixel array size. */
#define IMX335_NATIVE_WIDTH 2616U
#define IMX335_NATIVE_HEIGHT 1964U
@@ -85,16 +124,6 @@
#define IMX335_PIXEL_ARRAY_WIDTH 2592U
#define IMX335_PIXEL_ARRAY_HEIGHT 1944U

-/**
- * struct imx335_reg - imx335 sensor register
- * @address: Register address
- * @val: Register value
- */
-struct imx335_reg {
- u16 address;
- u8 val;
-};
-
/**
* struct imx335_reg_list - imx335 sensor register list
* @num_of_regs: Number of registers in the list
@@ -102,7 +131,7 @@ struct imx335_reg {
*/
struct imx335_reg_list {
u32 num_of_regs;
- const struct imx335_reg *regs;
+ const struct cci_reg_sequence *regs;
};

static const char * const imx335_supply_name[] = {
@@ -165,6 +194,7 @@ struct imx335 {
struct media_pad pad;
struct gpio_desc *reset_gpio;
struct regulator_bulk_data supplies[ARRAY_SIZE(imx335_supply_name)];
+ struct regmap *cci;

struct clk *inclk;
struct v4l2_ctrl_handler ctrl_handler;
@@ -217,140 +247,135 @@ static const int imx335_tpg_val[] = {
};

/* Sensor mode registers */
-static const struct imx335_reg mode_2592x1940_regs[] = {
- {0x3000, 0x01},
- {0x3002, 0x00},
- {0x3018, 0x04},
- {0x302c, 0x3c},
- {0x302e, 0x20},
- {0x3056, 0x94},
- {0x3074, 0xc8},
- {0x3076, 0x28},
- {0x304c, 0x00},
- {0x31a1, 0x00},
- {0x3288, 0x21},
- {0x328a, 0x02},
- {0x3414, 0x05},
- {0x3416, 0x18},
- {0x3648, 0x01},
- {0x364a, 0x04},
- {0x364c, 0x04},
- {0x3678, 0x01},
- {0x367c, 0x31},
- {0x367e, 0x31},
- {0x3706, 0x10},
- {0x3708, 0x03},
- {0x3714, 0x02},
- {0x3715, 0x02},
- {0x3716, 0x01},
- {0x3717, 0x03},
- {0x371c, 0x3d},
- {0x371d, 0x3f},
- {0x372c, 0x00},
- {0x372d, 0x00},
- {0x372e, 0x46},
- {0x372f, 0x00},
- {0x3730, 0x89},
- {0x3731, 0x00},
- {0x3732, 0x08},
- {0x3733, 0x01},
- {0x3734, 0xfe},
- {0x3735, 0x05},
- {0x3740, 0x02},
- {0x375d, 0x00},
- {0x375e, 0x00},
- {0x375f, 0x11},
- {0x3760, 0x01},
- {0x3768, 0x1b},
- {0x3769, 0x1b},
- {0x376a, 0x1b},
- {0x376b, 0x1b},
- {0x376c, 0x1a},
- {0x376d, 0x17},
- {0x376e, 0x0f},
- {0x3776, 0x00},
- {0x3777, 0x00},
- {0x3778, 0x46},
- {0x3779, 0x00},
- {0x377a, 0x89},
- {0x377b, 0x00},
- {0x377c, 0x08},
- {0x377d, 0x01},
- {0x377e, 0x23},
- {0x377f, 0x02},
- {0x3780, 0xd9},
- {0x3781, 0x03},
- {0x3782, 0xf5},
- {0x3783, 0x06},
- {0x3784, 0xa5},
- {0x3788, 0x0f},
- {0x378a, 0xd9},
- {0x378b, 0x03},
- {0x378c, 0xeb},
- {0x378d, 0x05},
- {0x378e, 0x87},
- {0x378f, 0x06},
- {0x3790, 0xf5},
- {0x3792, 0x43},
- {0x3794, 0x7a},
- {0x3796, 0xa1},
- {0x37b0, 0x36},
- {0x3a00, 0x00},
+static const struct cci_reg_sequence mode_2592x1940_regs[] = {
+ {IMX335_REG_MODE_SELECT, 0x01},
+ {IMX335_REG_MASTER_MODE, 0x00},
+ {IMX335_REG_WINMODE, 0x04},
+ {IMX335_REG_HTRIMMING_START, 0x0180},
+ {IMX335_REG_HNUM, 0x0a20},
+ {IMX335_REG_Y_OUT_SIZE, 0x0794},
+ {IMX335_REG_AREA3_ST_ADR_1, 0x00b0},
+ {IMX335_REG_AREA3_WIDTH_1, 0x0f58},
+ {IMX335_REG_OPB_SIZE_V, 0x00},
+ {IMX335_REG_XVS_XHS_DRV, 0x00},
+ {CCI_REG8(0x3288), 0x21}, /* undocumented */
+ {CCI_REG8(0x328a), 0x02}, /* undocumented */
+ {CCI_REG8(0x3414), 0x05}, /* undocumented */
+ {CCI_REG8(0x3416), 0x18}, /* undocumented */
+ {CCI_REG8(0x3648), 0x01}, /* undocumented */
+ {CCI_REG8(0x364a), 0x04}, /* undocumented */
+ {CCI_REG8(0x364c), 0x04}, /* undocumented */
+ {CCI_REG8(0x3678), 0x01}, /* undocumented */
+ {CCI_REG8(0x367c), 0x31}, /* undocumented */
+ {CCI_REG8(0x367e), 0x31}, /* undocumented */
+ {CCI_REG8(0x3706), 0x10}, /* undocumented */
+ {CCI_REG8(0x3708), 0x03}, /* undocumented */
+ {CCI_REG8(0x3714), 0x02}, /* undocumented */
+ {CCI_REG8(0x3715), 0x02}, /* undocumented */
+ {CCI_REG8(0x3716), 0x01}, /* undocumented */
+ {CCI_REG8(0x3717), 0x03}, /* undocumented */
+ {CCI_REG8(0x371c), 0x3d}, /* undocumented */
+ {CCI_REG8(0x371d), 0x3f}, /* undocumented */
+ {CCI_REG8(0x372c), 0x00}, /* undocumented */
+ {CCI_REG8(0x372d), 0x00}, /* undocumented */
+ {CCI_REG8(0x372e), 0x46}, /* undocumented */
+ {CCI_REG8(0x372f), 0x00}, /* undocumented */
+ {CCI_REG8(0x3730), 0x89}, /* undocumented */
+ {CCI_REG8(0x3731), 0x00}, /* undocumented */
+ {CCI_REG8(0x3732), 0x08}, /* undocumented */
+ {CCI_REG8(0x3733), 0x01}, /* undocumented */
+ {CCI_REG8(0x3734), 0xfe}, /* undocumented */
+ {CCI_REG8(0x3735), 0x05}, /* undocumented */
+ {CCI_REG8(0x3740), 0x02}, /* undocumented */
+ {CCI_REG8(0x375d), 0x00}, /* undocumented */
+ {CCI_REG8(0x375e), 0x00}, /* undocumented */
+ {CCI_REG8(0x375f), 0x11}, /* undocumented */
+ {CCI_REG8(0x3760), 0x01}, /* undocumented */
+ {CCI_REG8(0x3768), 0x1b}, /* undocumented */
+ {CCI_REG8(0x3769), 0x1b}, /* undocumented */
+ {CCI_REG8(0x376a), 0x1b}, /* undocumented */
+ {CCI_REG8(0x376b), 0x1b}, /* undocumented */
+ {CCI_REG8(0x376c), 0x1a}, /* undocumented */
+ {CCI_REG8(0x376d), 0x17}, /* undocumented */
+ {CCI_REG8(0x376e), 0x0f}, /* undocumented */
+ {CCI_REG8(0x3776), 0x00}, /* undocumented */
+ {CCI_REG8(0x3777), 0x00}, /* undocumented */
+ {CCI_REG8(0x3778), 0x46}, /* undocumented */
+ {CCI_REG8(0x3779), 0x00}, /* undocumented */
+ {CCI_REG8(0x377a), 0x89}, /* undocumented */
+ {CCI_REG8(0x377b), 0x00}, /* undocumented */
+ {CCI_REG8(0x377c), 0x08}, /* undocumented */
+ {CCI_REG8(0x377d), 0x01}, /* undocumented */
+ {CCI_REG8(0x377e), 0x23}, /* undocumented */
+ {CCI_REG8(0x377f), 0x02}, /* undocumented */
+ {CCI_REG8(0x3780), 0xd9}, /* undocumented */
+ {CCI_REG8(0x3781), 0x03}, /* undocumented */
+ {CCI_REG8(0x3782), 0xf5}, /* undocumented */
+ {CCI_REG8(0x3783), 0x06}, /* undocumented */
+ {CCI_REG8(0x3784), 0xa5}, /* undocumented */
+ {CCI_REG8(0x3788), 0x0f}, /* undocumented */
+ {CCI_REG8(0x378a), 0xd9}, /* undocumented */
+ {CCI_REG8(0x378b), 0x03}, /* undocumented */
+ {CCI_REG8(0x378c), 0xeb}, /* undocumented */
+ {CCI_REG8(0x378d), 0x05}, /* undocumented */
+ {CCI_REG8(0x378e), 0x87}, /* undocumented */
+ {CCI_REG8(0x378f), 0x06}, /* undocumented */
+ {CCI_REG8(0x3790), 0xf5}, /* undocumented */
+ {CCI_REG8(0x3792), 0x43}, /* undocumented */
+ {CCI_REG8(0x3794), 0x7a}, /* undocumented */
+ {CCI_REG8(0x3796), 0xa1}, /* undocumented */
+ {CCI_REG8(0x37b0), 0x36}, /* undocumented */
+ {CCI_REG8(0x3a00), 0x00}, /* undocumented */
};

-static const struct imx335_reg raw10_framefmt_regs[] = {
- {0x3050, 0x00},
- {0x319d, 0x00},
- {0x341c, 0xff},
- {0x341d, 0x01},
+static const struct cci_reg_sequence raw10_framefmt_regs[] = {
+ {IMX335_REG_ADBIT, 0x00},
+ {IMX335_REG_MDBIT, 0x00},
+ {IMX335_REG_ADBIT1, 0x1ff},
};

-static const struct imx335_reg raw12_framefmt_regs[] = {
- {0x3050, 0x01},
- {0x319d, 0x01},
- {0x341c, 0x47},
- {0x341d, 0x00},
+static const struct cci_reg_sequence raw12_framefmt_regs[] = {
+ {IMX335_REG_ADBIT, 0x01},
+ {IMX335_REG_MDBIT, 0x01},
+ {IMX335_REG_ADBIT1, 0x47},
};

-static const struct imx335_reg mipi_data_rate_1188Mbps[] = {
- {0x300c, 0x3b},
- {0x300d, 0x2a},
- {0x314c, 0xc6},
- {0x314d, 0x00},
- {0x315a, 0x02},
- {0x3168, 0xa0},
- {0x316a, 0x7e},
- {0x319e, 0x01},
- {0x3a18, 0x8f},
- {0x3a1a, 0x4f},
- {0x3a1c, 0x47},
- {0x3a1e, 0x37},
- {0x3a1f, 0x01},
- {0x3a20, 0x4f},
- {0x3a22, 0x87},
- {0x3a24, 0x4f},
- {0x3a26, 0x7f},
- {0x3a28, 0x3f},
+static const struct cci_reg_sequence mipi_data_rate_1188Mbps[] = {
+ {IMX335_REG_BCWAIT_TIME, 0x3b},
+ {IMX335_REG_CPWAIT_TIME, 0x2a},
+ {IMX335_REG_INCLKSEL1, 0x00c6},
+ {IMX335_REG_INCLKSEL2, 0x02},
+ {IMX335_REG_INCLKSEL3, 0xa0},
+ {IMX335_REG_INCLKSEL4, 0x7e},
+ {IMX335_REG_SYSMODE, 0x01},
+ {IMX335_REG_TCLKPOST, 0x8f},
+ {IMX335_REG_TCLKPREPARE, 0x4f},
+ {IMX335_REG_TCLK_TRAIL, 0x47},
+ {IMX335_REG_TCLK_ZERO, 0x0137},
+ {IMX335_REG_THS_PREPARE, 0x4f},
+ {IMX335_REG_THS_ZERO, 0x87},
+ {IMX335_REG_THS_TRAIL, 0x4f},
+ {IMX335_REG_THS_EXIT, 0x7f},
+ {IMX335_REG_TPLX, 0x3f},
};

-static const struct imx335_reg mipi_data_rate_891Mbps[] = {
- {0x300c, 0x3b},
- {0x300d, 0x2a},
- {0x314c, 0x29},
- {0x314d, 0x01},
- {0x315a, 0x06},
- {0x3168, 0xa0},
- {0x316a, 0x7e},
- {0x319e, 0x02},
- {0x3a18, 0x7f},
- {0x3a1a, 0x37},
- {0x3a1c, 0x37},
- {0x3a1e, 0xf7},
- {0x3a20, 0x3f},
- {0x3a22, 0x6f},
- {0x3a24, 0x3f},
- {0x3a26, 0x5f},
- {0x3a28, 0x2f},
+static const struct cci_reg_sequence mipi_data_rate_891Mbps[] = {
+ {IMX335_REG_BCWAIT_TIME, 0x3b},
+ {IMX335_REG_CPWAIT_TIME, 0x2a},
+ {IMX335_REG_INCLKSEL1, 0x0129},
+ {IMX335_REG_INCLKSEL2, 0x06},
+ {IMX335_REG_INCLKSEL3, 0xa0},
+ {IMX335_REG_INCLKSEL4, 0x7e},
+ {IMX335_REG_SYSMODE, 0x02},
+ {IMX335_REG_TCLKPOST, 0x7f},
+ {IMX335_REG_TCLKPREPARE, 0x37},
+ {IMX335_REG_TCLK_TRAIL, 0x37},
+ {IMX335_REG_TCLK_ZERO, 0xf7},
+ {IMX335_REG_THS_PREPARE, 0x3f},
+ {IMX335_REG_THS_ZERO, 0x6f},
+ {IMX335_REG_THS_TRAIL, 0x3f},
+ {IMX335_REG_THS_EXIT, 0x5f},
+ {IMX335_REG_TPLX, 0x2f},
};

static const s64 link_freq[] = {
@@ -402,101 +427,6 @@ static inline struct imx335 *to_imx335(struct v4l2_subdev *subdev)
return container_of(subdev, struct imx335, sd);
}

-/**
- * imx335_read_reg() - Read registers.
- * @imx335: pointer to imx335 device
- * @reg: register address
- * @len: length of bytes to read. Max supported bytes is 4
- * @val: pointer to register value to be filled.
- *
- * Big endian register addresses with little endian values.
- *
- * Return: 0 if successful, error code otherwise.
- */
-static int imx335_read_reg(struct imx335 *imx335, u16 reg, u32 len, u32 *val)
-{
- struct i2c_client *client = v4l2_get_subdevdata(&imx335->sd);
- struct i2c_msg msgs[2] = {0};
- u8 addr_buf[2] = {0};
- u8 data_buf[4] = {0};
- int ret;
-
- if (WARN_ON(len > 4))
- return -EINVAL;
-
- put_unaligned_be16(reg, addr_buf);
-
- /* Write register address */
- msgs[0].addr = client->addr;
- msgs[0].flags = 0;
- msgs[0].len = ARRAY_SIZE(addr_buf);
- msgs[0].buf = addr_buf;
-
- /* Read data from register */
- msgs[1].addr = client->addr;
- msgs[1].flags = I2C_M_RD;
- msgs[1].len = len;
- msgs[1].buf = data_buf;
-
- ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
- if (ret != ARRAY_SIZE(msgs))
- return -EIO;
-
- *val = get_unaligned_le32(data_buf);
-
- return 0;
-}
-
-/**
- * imx335_write_reg() - Write register
- * @imx335: pointer to imx335 device
- * @reg: register address
- * @len: length of bytes. Max supported bytes is 4
- * @val: register value
- *
- * Big endian register addresses with little endian values.
- *
- * Return: 0 if successful, error code otherwise.
- */
-static int imx335_write_reg(struct imx335 *imx335, u16 reg, u32 len, u32 val)
-{
- struct i2c_client *client = v4l2_get_subdevdata(&imx335->sd);
- u8 buf[6] = {0};
-
- if (WARN_ON(len > 4))
- return -EINVAL;
-
- put_unaligned_be16(reg, buf);
- put_unaligned_le32(val, buf + 2);
- if (i2c_master_send(client, buf, len + 2) != len + 2)
- return -EIO;
-
- return 0;
-}
-
-/**
- * imx335_write_regs() - Write a list of registers
- * @imx335: pointer to imx335 device
- * @regs: list of registers to be written
- * @len: length of registers array
- *
- * Return: 0 if successful. error code otherwise.
- */
-static int imx335_write_regs(struct imx335 *imx335,
- const struct imx335_reg *regs, u32 len)
-{
- unsigned int i;
- int ret;
-
- for (i = 0; i < len; i++) {
- ret = imx335_write_reg(imx335, regs[i].address, 1, regs[i].val);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
/**
* imx335_update_controls() - Update control ranges based on streaming mode
* @imx335: pointer to imx335 device
@@ -533,7 +463,8 @@ static int imx335_update_controls(struct imx335 *imx335,
static int imx335_update_exp_gain(struct imx335 *imx335, u32 exposure, u32 gain)
{
u32 lpfr, shutter;
- int ret;
+ int ret_hold;
+ int ret = 0;

lpfr = imx335->vblank + imx335->cur_mode->height;
shutter = lpfr - exposure;
@@ -541,64 +472,55 @@ static int imx335_update_exp_gain(struct imx335 *imx335, u32 exposure, u32 gain)
dev_dbg(imx335->dev, "Set exp %u, analog gain %u, shutter %u, lpfr %u\n",
exposure, gain, shutter, lpfr);

- ret = imx335_write_reg(imx335, IMX335_REG_HOLD, 1, 1);
- if (ret)
- return ret;
-
- ret = imx335_write_reg(imx335, IMX335_REG_LPFR, 3, lpfr);
- if (ret)
- goto error_release_group_hold;
-
- ret = imx335_write_reg(imx335, IMX335_REG_SHUTTER, 3, shutter);
- if (ret)
- goto error_release_group_hold;
-
- ret = imx335_write_reg(imx335, IMX335_REG_AGAIN, 2, gain);
-
-error_release_group_hold:
- imx335_write_reg(imx335, IMX335_REG_HOLD, 1, 0);
+ cci_write(imx335->cci, IMX335_REG_HOLD, 1, &ret);
+ cci_write(imx335->cci, IMX335_REG_VMAX, lpfr, &ret);
+ cci_write(imx335->cci, IMX335_REG_SHUTTER, shutter, &ret);
+ cci_write(imx335->cci, IMX335_REG_AGAIN, gain, &ret);
+ /*
+ * Unconditionally attempt to release the hold, but track the
+ * error if the unhold itself fails.
+ */
+ ret_hold = cci_write(imx335->cci, IMX335_REG_HOLD, 0, NULL);
+ if (ret_hold)
+ ret = ret_hold;

return ret;
}

static int imx335_update_test_pattern(struct imx335 *imx335, u32 pattern_index)
{
- int ret;
+ int ret = 0;

if (pattern_index >= ARRAY_SIZE(imx335_tpg_val))
return -EINVAL;

if (pattern_index) {
- const struct imx335_reg tpg_enable_regs[] = {
- { 0x3148, 0x10 },
- { 0x3280, 0x00 },
- { 0x329c, 0x01 },
- { 0x32a0, 0x11 },
- { 0x3302, 0x00 },
- { 0x3303, 0x00 },
- { 0x336c, 0x00 },
+ const struct cci_reg_sequence tpg_enable_regs[] = {
+ {IMX335_REG_TPG_TESTCLKEN, 0x10},
+ {IMX335_REG_TPG_DIG_CLP_MODE, 0x00},
+ {IMX335_REG_TPG_EN_DUOUT, 0x01},
+ {IMX335_REG_TPG_COLORWIDTH, 0x11},
+ {IMX335_REG_TPG_BLKLEVEL, 0x00},
+ {IMX335_REG_TPG_WRJ_OPEN, 0x00},
};

- ret = imx335_write_reg(imx335, IMX335_REG_TPG, 1,
- imx335_tpg_val[pattern_index]);
- if (ret)
- return ret;
+ cci_write(imx335->cci, IMX335_REG_TPG,
+ imx335_tpg_val[pattern_index], &ret);

- ret = imx335_write_regs(imx335, tpg_enable_regs,
- ARRAY_SIZE(tpg_enable_regs));
+ cci_multi_reg_write(imx335->cci, tpg_enable_regs,
+ ARRAY_SIZE(tpg_enable_regs), &ret);
} else {
- const struct imx335_reg tpg_disable_regs[] = {
- { 0x3148, 0x00 },
- { 0x3280, 0x01 },
- { 0x329c, 0x00 },
- { 0x32a0, 0x10 },
- { 0x3302, 0x32 },
- { 0x3303, 0x00 },
- { 0x336c, 0x01 },
+ const struct cci_reg_sequence tpg_disable_regs[] = {
+ {IMX335_REG_TPG_TESTCLKEN, 0x00},
+ {IMX335_REG_TPG_DIG_CLP_MODE, 0x01},
+ {IMX335_REG_TPG_EN_DUOUT, 0x00},
+ {IMX335_REG_TPG_COLORWIDTH, 0x10},
+ {IMX335_REG_TPG_BLKLEVEL, 0x32},
+ {IMX335_REG_TPG_WRJ_OPEN, 0x01},
};

- ret = imx335_write_regs(imx335, tpg_disable_regs,
- ARRAY_SIZE(tpg_disable_regs));
+ cci_multi_reg_write(imx335->cci, tpg_disable_regs,
+ ARRAY_SIZE(tpg_disable_regs), &ret);
}

return ret;
@@ -897,12 +819,14 @@ static int imx335_set_framefmt(struct imx335 *imx335)
{
switch (imx335->cur_mbus_code) {
case MEDIA_BUS_FMT_SRGGB10_1X10:
- return imx335_write_regs(imx335, raw10_framefmt_regs,
- ARRAY_SIZE(raw10_framefmt_regs));
+ return cci_multi_reg_write(imx335->cci, raw10_framefmt_regs,
+ ARRAY_SIZE(raw10_framefmt_regs),
+ NULL);

case MEDIA_BUS_FMT_SRGGB12_1X12:
- return imx335_write_regs(imx335, raw12_framefmt_regs,
- ARRAY_SIZE(raw12_framefmt_regs));
+ return cci_multi_reg_write(imx335->cci, raw12_framefmt_regs,
+ ARRAY_SIZE(raw12_framefmt_regs),
+ NULL);
}

return -EINVAL;
@@ -921,7 +845,8 @@ static int imx335_start_streaming(struct imx335 *imx335)

/* Setup PLL */
reg_list = &link_freq_reglist[__ffs(imx335->link_freq_bitmap)];
- ret = imx335_write_regs(imx335, reg_list->regs, reg_list->num_of_regs);
+ ret = cci_multi_reg_write(imx335->cci, reg_list->regs,
+ reg_list->num_of_regs, NULL);
if (ret) {
dev_err(imx335->dev, "%s failed to set plls\n", __func__);
return ret;
@@ -929,8 +854,8 @@ static int imx335_start_streaming(struct imx335 *imx335)

/* Write sensor mode registers */
reg_list = &imx335->cur_mode->reg_list;
- ret = imx335_write_regs(imx335, reg_list->regs,
- reg_list->num_of_regs);
+ ret = cci_multi_reg_write(imx335->cci, reg_list->regs,
+ reg_list->num_of_regs, NULL);
if (ret) {
dev_err(imx335->dev, "fail to write initial registers\n");
return ret;
@@ -944,7 +869,8 @@ static int imx335_start_streaming(struct imx335 *imx335)
}

/* Configure lanes */
- ret = imx335_write_reg(imx335, IMX335_LANEMODE, 1, imx335->lane_mode);
+ ret = cci_write(imx335->cci, IMX335_REG_LANEMODE,
+ imx335->lane_mode, NULL);
if (ret)
return ret;

@@ -956,8 +882,8 @@ static int imx335_start_streaming(struct imx335 *imx335)
}

/* Start streaming */
- ret = imx335_write_reg(imx335, IMX335_REG_MODE_SELECT,
- 1, IMX335_MODE_STREAMING);
+ ret = cci_write(imx335->cci, IMX335_REG_MODE_SELECT,
+ IMX335_MODE_STREAMING, NULL);
if (ret) {
dev_err(imx335->dev, "fail to start streaming\n");
return ret;
@@ -977,8 +903,8 @@ static int imx335_start_streaming(struct imx335 *imx335)
*/
static int imx335_stop_streaming(struct imx335 *imx335)
{
- return imx335_write_reg(imx335, IMX335_REG_MODE_SELECT,
- 1, IMX335_MODE_STANDBY);
+ return cci_write(imx335->cci, IMX335_REG_MODE_SELECT,
+ IMX335_MODE_STANDBY, NULL);
}

/**
@@ -1029,14 +955,14 @@ static int imx335_set_stream(struct v4l2_subdev *sd, int enable)
static int imx335_detect(struct imx335 *imx335)
{
int ret;
- u32 val;
+ u64 val;

- ret = imx335_read_reg(imx335, IMX335_REG_ID, 2, &val);
+ ret = cci_read(imx335->cci, IMX335_REG_ID, &val, NULL);
if (ret)
return ret;

if (val != IMX335_ID) {
- dev_err(imx335->dev, "chip id mismatch: %x!=%x\n",
+ dev_err(imx335->dev, "chip id mismatch: %x!=%llx\n",
IMX335_ID, val);
return -ENXIO;
}
@@ -1337,6 +1263,11 @@ static int imx335_probe(struct i2c_client *client)
return -ENOMEM;

imx335->dev = &client->dev;
+ imx335->cci = devm_cci_regmap_init_i2c(client, 16);
+ if (IS_ERR(imx335->cci)) {
+ dev_err(imx335->dev, "Unable to initialize I2C\n");
+ return -ENODEV;
+ }

/* Initialize subdev */
v4l2_i2c_subdev_init(&imx335->sd, client, &imx335_subdev_ops);
--
2.43.0