]> git.ipfire.org Git - thirdparty/kernel/linux.git/commitdiff
media: i2c: ov9282: Convert to CCI register access helpers
authorXiaolei Wang <xiaolei.wang@windriver.com>
Thu, 5 Mar 2026 04:33:48 +0000 (12:33 +0800)
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Wed, 11 Mar 2026 00:05:33 +0000 (01:05 +0100)
Use the new common CCI register access helpers to replace the private
register access helpers in the ov9282 driver. This simplifies the driver
by reducing the amount of code.

Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Reviewed-by: Tarang Raval <tarang.raval@siliconsignals.io>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
[Sakari Ailus: Declare ret_hold earlier to make old GCC happy.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
drivers/media/i2c/Kconfig
drivers/media/i2c/ov9282.c

index fded4bf826a07622a790358c9c2011b9436ef0cc..46940a290a503cab6e76e7e3ef74345826a27a70 100644 (file)
@@ -690,6 +690,7 @@ config VIDEO_OV8865
 config VIDEO_OV9282
        tristate "OmniVision OV9282 sensor support"
        depends on OF_GPIO
+       select V4L2_CCI_I2C
        help
          This is a Video4Linux2 sensor driver for the OmniVision
          OV9282 camera sensor.
index ded9b2044ff8fbaeaf96b6f3f923647fda36f7b8..13425dd1b17fb362a564481eb04d85c4227684e3 100644 (file)
 #include <linux/math.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
+#include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 
+#include <media/v4l2-cci.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-event.h>
 #include <media/v4l2-fwnode.h>
 #include <media/v4l2-subdev.h>
 
 /* Streaming Mode */
-#define OV9282_REG_MODE_SELECT 0x0100
+#define OV9282_REG_MODE_SELECT CCI_REG8(0x0100)
 #define OV9282_MODE_STANDBY    0x00
 #define OV9282_MODE_STREAMING  0x01
 
-#define OV9282_REG_PLL_CTRL_0D 0x030d
+#define OV9282_REG_PLL_CTRL_0D CCI_REG8(0x030d)
 #define OV9282_PLL_CTRL_0D_RAW8                0x60
 #define OV9282_PLL_CTRL_0D_RAW10       0x50
 
-#define OV9282_REG_TIMING_HTS  0x380c
+#define OV9282_REG_TIMING_HTS  CCI_REG16(0x380c)
 #define OV9282_TIMING_HTS_MAX  0x7fff
 
 /* Lines per frame */
-#define OV9282_REG_LPFR                0x380e
+#define OV9282_REG_LPFR                CCI_REG16(0x380e)
 
 /* Chip ID */
-#define OV9282_REG_ID          0x300a
+#define OV9282_REG_ID          CCI_REG16(0x300a)
 #define OV9282_ID              0x9281
 
 /* Output enable registers */
-#define OV9282_REG_OUTPUT_ENABLE4      0x3004
+#define OV9282_REG_OUTPUT_ENABLE4      CCI_REG8(0x3004)
 #define OV9282_OUTPUT_ENABLE4_GPIO2    BIT(1)
 #define OV9282_OUTPUT_ENABLE4_D9       BIT(0)
 
-#define OV9282_REG_OUTPUT_ENABLE5      0x3005
+#define OV9282_REG_OUTPUT_ENABLE5      CCI_REG8(0x3005)
 #define OV9282_OUTPUT_ENABLE5_D8       BIT(7)
 #define OV9282_OUTPUT_ENABLE5_D7       BIT(6)
 #define OV9282_OUTPUT_ENABLE5_D6       BIT(5)
@@ -53,7 +55,7 @@
 #define OV9282_OUTPUT_ENABLE5_D2       BIT(1)
 #define OV9282_OUTPUT_ENABLE5_D1       BIT(0)
 
-#define OV9282_REG_OUTPUT_ENABLE6      0x3006
+#define OV9282_REG_OUTPUT_ENABLE6      CCI_REG8(0x3006)
 #define OV9282_OUTPUT_ENABLE6_D0       BIT(7)
 #define OV9282_OUTPUT_ENABLE6_PCLK     BIT(6)
 #define OV9282_OUTPUT_ENABLE6_HREF     BIT(5)
 #define OV9282_OUTPUT_ENABLE6_VSYNC    BIT(1)
 
 /* Exposure control */
-#define OV9282_REG_EXPOSURE    0x3500
+#define OV9282_REG_EXPOSURE    CCI_REG24(0x3500)
 #define OV9282_EXPOSURE_MIN    1
 #define OV9282_EXPOSURE_OFFSET 25
 #define OV9282_EXPOSURE_STEP   1
 #define OV9282_EXPOSURE_DEFAULT        0x0282
 
 /* AEC/AGC manual */
-#define OV9282_REG_AEC_MANUAL          0x3503
+#define OV9282_REG_AEC_MANUAL          CCI_REG8(0x3503)
 #define OV9282_DIGFRAC_GAIN_DELAY      BIT(6)
 #define OV9282_GAIN_CHANGE_DELAY       BIT(5)
 #define OV9282_GAIN_DELAY              BIT(4)
 #define OV9282_AEC_MANUAL_DEFAULT      0x00
 
 /* Analog gain control */
-#define OV9282_REG_AGAIN       0x3509
+#define OV9282_REG_AGAIN       CCI_REG8(0x3509)
 #define OV9282_AGAIN_MIN       0x10
 #define OV9282_AGAIN_MAX       0xff
 #define OV9282_AGAIN_STEP      1
 #define OV9282_AGAIN_DEFAULT   0x10
 
 /* Group hold register */
-#define OV9282_REG_HOLD                0x3308
+#define OV9282_REG_HOLD                CCI_REG8(0x3308)
 
-#define OV9282_REG_ANA_CORE_2  0x3662
+#define OV9282_REG_ANA_CORE_2  CCI_REG8(0x3662)
 #define OV9282_ANA_CORE2_RAW8  0x07
 #define OV9282_ANA_CORE2_RAW10 0x05
 
-#define OV9282_REG_TIMING_FORMAT_1     0x3820
-#define OV9282_REG_TIMING_FORMAT_2     0x3821
+#define OV9282_REG_TIMING_FORMAT_1     CCI_REG8(0x3820)
+#define OV9282_REG_TIMING_FORMAT_2     CCI_REG8(0x3821)
 #define OV9282_FLIP_BIT                        BIT(2)
 
-#define OV9282_REG_MIPI_CTRL00 0x4800
+#define OV9282_REG_MIPI_CTRL00 CCI_REG8(0x4800)
 #define OV9282_GATED_CLOCK     BIT(5)
 
 /* Flash/Strobe control registers */
-#define OV9282_REG_STROBE_FRAME_SPAN           0x3925
+#define OV9282_REG_STROBE_FRAME_SPAN           CCI_REG32(0x3925)
 #define OV9282_STROBE_FRAME_SPAN_DEFAULT       0x0000001a
 
 /* Input clock rate */
@@ -139,16 +141,6 @@ static const char * const ov9282_supply_names[] = {
 
 #define OV9282_NUM_SUPPLIES ARRAY_SIZE(ov9282_supply_names)
 
-/**
- * struct ov9282_reg - ov9282 sensor register
- * @address: Register address
- * @val: Register value
- */
-struct ov9282_reg {
-       u16 address;
-       u8 val;
-};
-
 /**
  * struct ov9282_reg_list - ov9282 sensor register list
  * @num_of_regs: Number of registers in the list
@@ -156,7 +148,7 @@ struct ov9282_reg {
  */
 struct ov9282_reg_list {
        u32 num_of_regs;
-       const struct ov9282_reg *regs;
+       const struct cci_reg_sequence *regs;
 };
 
 /**
@@ -188,6 +180,7 @@ struct ov9282_mode {
  * struct ov9282 - ov9282 sensor device structure
  * @dev: Pointer to generic device
  * @sd: V4L2 sub-device
+ * @regmap: Regmap for sensor register access
  * @pad: Media pad. Only one pad supported
  * @reset_gpio: Sensor reset gpio
  * @inclk: Sensor input clock
@@ -209,6 +202,7 @@ struct ov9282_mode {
 struct ov9282 {
        struct device *dev;
        struct v4l2_subdev sd;
+       struct regmap *regmap;
        struct media_pad pad;
        struct gpio_desc *reset_gpio;
        struct clk *inclk;
@@ -241,73 +235,68 @@ static const s64 link_freq[] = {
  * register arrays as some settings are written as part of ov9282_power_on,
  * and the reset will clear them.
  */
-static const struct ov9282_reg common_regs[] = {
-       {0x0302, 0x32},
-       {0x030e, 0x02},
-       {0x3001, 0x00},
+static const struct cci_reg_sequence common_regs[] = {
+       {CCI_REG8(0x0302), 0x32},
+       {CCI_REG8(0x030e), 0x02},
+       {CCI_REG8(0x3001), 0x00},
        {OV9282_REG_OUTPUT_ENABLE4, 0x00},
        {OV9282_REG_OUTPUT_ENABLE5, 0x00},
        {OV9282_REG_OUTPUT_ENABLE6, OV9282_OUTPUT_ENABLE6_ILPWM},
-       {0x3011, 0x0a},
-       {0x3013, 0x18},
-       {0x301c, 0xf0},
-       {0x3022, 0x01},
-       {0x3030, 0x10},
-       {0x3039, 0x32},
-       {0x303a, 0x00},
+       {CCI_REG8(0x3011), 0x0a},
+       {CCI_REG8(0x3013), 0x18},
+       {CCI_REG8(0x301c), 0xf0},
+       {CCI_REG8(0x3022), 0x01},
+       {CCI_REG8(0x3030), 0x10},
+       {CCI_REG8(0x3039), 0x32},
+       {CCI_REG8(0x303a), 0x00},
        {OV9282_REG_AEC_MANUAL, OV9282_GAIN_PREC16_EN},
-       {0x3505, 0x8c},
-       {0x3507, 0x03},
-       {0x3508, 0x00},
-       {0x3610, 0x80},
-       {0x3611, 0xa0},
-       {0x3620, 0x6e},
-       {0x3632, 0x56},
-       {0x3633, 0x78},
-       {0x3666, 0x00},
-       {0x366f, 0x5a},
-       {0x3680, 0x84},
-       {0x3712, 0x80},
-       {0x372d, 0x22},
-       {0x3731, 0x80},
-       {0x3732, 0x30},
-       {0x377d, 0x22},
-       {0x3788, 0x02},
-       {0x3789, 0xa4},
-       {0x378a, 0x00},
-       {0x378b, 0x4a},
-       {0x3799, 0x20},
-       {0x3881, 0x42},
-       {0x38a8, 0x02},
-       {0x38a9, 0x80},
-       {0x38b1, 0x00},
-       {0x38c4, 0x00},
-       {0x38c5, 0xc0},
-       {0x38c6, 0x04},
-       {0x38c7, 0x80},
-       {0x3920, 0xff},
-       {0x4010, 0x40},
-       {0x4043, 0x40},
-       {0x4307, 0x30},
-       {0x4317, 0x00},
-       {0x4501, 0x00},
-       {0x450a, 0x08},
-       {0x4601, 0x04},
-       {0x470f, 0x00},
-       {0x4f07, 0x00},
-       {0x5000, 0x9f},
-       {0x5001, 0x00},
-       {0x5e00, 0x00},
-       {0x5d00, 0x07},
-       {0x5d01, 0x00},
-       {0x0101, 0x01},
-       {0x1000, 0x03},
-       {0x5a08, 0x84},
-};
-
-static struct ov9282_reg_list common_regs_list = {
-       .num_of_regs = ARRAY_SIZE(common_regs),
-       .regs = common_regs,
+       {CCI_REG8(0x3505), 0x8c},
+       {CCI_REG8(0x3507), 0x03},
+       {CCI_REG8(0x3508), 0x00},
+       {CCI_REG8(0x3610), 0x80},
+       {CCI_REG8(0x3611), 0xa0},
+       {CCI_REG8(0x3620), 0x6e},
+       {CCI_REG8(0x3632), 0x56},
+       {CCI_REG8(0x3633), 0x78},
+       {CCI_REG8(0x3666), 0x00},
+       {CCI_REG8(0x366f), 0x5a},
+       {CCI_REG8(0x3680), 0x84},
+       {CCI_REG8(0x3712), 0x80},
+       {CCI_REG8(0x372d), 0x22},
+       {CCI_REG8(0x3731), 0x80},
+       {CCI_REG8(0x3732), 0x30},
+       {CCI_REG8(0x377d), 0x22},
+       {CCI_REG8(0x3788), 0x02},
+       {CCI_REG8(0x3789), 0xa4},
+       {CCI_REG8(0x378a), 0x00},
+       {CCI_REG8(0x378b), 0x4a},
+       {CCI_REG8(0x3799), 0x20},
+       {CCI_REG8(0x3881), 0x42},
+       {CCI_REG8(0x38a8), 0x02},
+       {CCI_REG8(0x38a9), 0x80},
+       {CCI_REG8(0x38b1), 0x00},
+       {CCI_REG8(0x38c4), 0x00},
+       {CCI_REG8(0x38c5), 0xc0},
+       {CCI_REG8(0x38c6), 0x04},
+       {CCI_REG8(0x38c7), 0x80},
+       {CCI_REG8(0x3920), 0xff},
+       {CCI_REG8(0x4010), 0x40},
+       {CCI_REG8(0x4043), 0x40},
+       {CCI_REG8(0x4307), 0x30},
+       {CCI_REG8(0x4317), 0x00},
+       {CCI_REG8(0x4501), 0x00},
+       {CCI_REG8(0x450a), 0x08},
+       {CCI_REG8(0x4601), 0x04},
+       {CCI_REG8(0x470f), 0x00},
+       {CCI_REG8(0x4f07), 0x00},
+       {CCI_REG8(0x5000), 0x9f},
+       {CCI_REG8(0x5001), 0x00},
+       {CCI_REG8(0x5e00), 0x00},
+       {CCI_REG8(0x5d00), 0x07},
+       {CCI_REG8(0x5d01), 0x00},
+       {CCI_REG8(0x0101), 0x01},
+       {CCI_REG8(0x1000), 0x03},
+       {CCI_REG8(0x5a08), 0x84},
 };
 
 #define MODE_1280_800          0
@@ -317,96 +306,96 @@ static struct ov9282_reg_list common_regs_list = {
 #define DEFAULT_MODE           MODE_1280_720
 
 /* Sensor mode registers */
-static const struct ov9282_reg mode_1280x800_regs[] = {
-       {0x3778, 0x00},
-       {0x3800, 0x00},
-       {0x3801, 0x00},
-       {0x3802, 0x00},
-       {0x3803, 0x00},
-       {0x3804, 0x05},
-       {0x3805, 0x0f},
-       {0x3806, 0x03},
-       {0x3807, 0x2f},
-       {0x3808, 0x05},
-       {0x3809, 0x00},
-       {0x380a, 0x03},
-       {0x380b, 0x20},
-       {0x3810, 0x00},
-       {0x3811, 0x08},
-       {0x3812, 0x00},
-       {0x3813, 0x08},
-       {0x3814, 0x11},
-       {0x3815, 0x11},
+static const struct cci_reg_sequence mode_1280x800_regs[] = {
+       {CCI_REG8(0x3778), 0x00},
+       {CCI_REG8(0x3800), 0x00},
+       {CCI_REG8(0x3801), 0x00},
+       {CCI_REG8(0x3802), 0x00},
+       {CCI_REG8(0x3803), 0x00},
+       {CCI_REG8(0x3804), 0x05},
+       {CCI_REG8(0x3805), 0x0f},
+       {CCI_REG8(0x3806), 0x03},
+       {CCI_REG8(0x3807), 0x2f},
+       {CCI_REG8(0x3808), 0x05},
+       {CCI_REG8(0x3809), 0x00},
+       {CCI_REG8(0x380a), 0x03},
+       {CCI_REG8(0x380b), 0x20},
+       {CCI_REG8(0x3810), 0x00},
+       {CCI_REG8(0x3811), 0x08},
+       {CCI_REG8(0x3812), 0x00},
+       {CCI_REG8(0x3813), 0x08},
+       {CCI_REG8(0x3814), 0x11},
+       {CCI_REG8(0x3815), 0x11},
        {OV9282_REG_TIMING_FORMAT_1, 0x40},
        {OV9282_REG_TIMING_FORMAT_2, 0x00},
-       {0x4003, 0x40},
-       {0x4008, 0x04},
-       {0x4009, 0x0b},
-       {0x400c, 0x00},
-       {0x400d, 0x07},
-       {0x4507, 0x00},
-       {0x4509, 0x00},
+       {CCI_REG8(0x4003), 0x40},
+       {CCI_REG8(0x4008), 0x04},
+       {CCI_REG8(0x4009), 0x0b},
+       {CCI_REG8(0x400c), 0x00},
+       {CCI_REG8(0x400d), 0x07},
+       {CCI_REG8(0x4507), 0x00},
+       {CCI_REG8(0x4509), 0x00},
 };
 
-static const struct ov9282_reg mode_1280x720_regs[] = {
-       {0x3778, 0x00},
-       {0x3800, 0x00},
-       {0x3801, 0x00},
-       {0x3802, 0x00},
-       {0x3803, 0x00},
-       {0x3804, 0x05},
-       {0x3805, 0x0f},
-       {0x3806, 0x02},
-       {0x3807, 0xdf},
-       {0x3808, 0x05},
-       {0x3809, 0x00},
-       {0x380a, 0x02},
-       {0x380b, 0xd0},
-       {0x3810, 0x00},
-       {0x3811, 0x08},
-       {0x3812, 0x00},
-       {0x3813, 0x08},
-       {0x3814, 0x11},
-       {0x3815, 0x11},
+static const struct cci_reg_sequence mode_1280x720_regs[] = {
+       {CCI_REG8(0x3778), 0x00},
+       {CCI_REG8(0x3800), 0x00},
+       {CCI_REG8(0x3801), 0x00},
+       {CCI_REG8(0x3802), 0x00},
+       {CCI_REG8(0x3803), 0x00},
+       {CCI_REG8(0x3804), 0x05},
+       {CCI_REG8(0x3805), 0x0f},
+       {CCI_REG8(0x3806), 0x02},
+       {CCI_REG8(0x3807), 0xdf},
+       {CCI_REG8(0x3808), 0x05},
+       {CCI_REG8(0x3809), 0x00},
+       {CCI_REG8(0x380a), 0x02},
+       {CCI_REG8(0x380b), 0xd0},
+       {CCI_REG8(0x3810), 0x00},
+       {CCI_REG8(0x3811), 0x08},
+       {CCI_REG8(0x3812), 0x00},
+       {CCI_REG8(0x3813), 0x08},
+       {CCI_REG8(0x3814), 0x11},
+       {CCI_REG8(0x3815), 0x11},
        {OV9282_REG_TIMING_FORMAT_1, 0x3c},
        {OV9282_REG_TIMING_FORMAT_2, 0x84},
-       {0x4003, 0x40},
-       {0x4008, 0x02},
-       {0x4009, 0x05},
-       {0x400c, 0x00},
-       {0x400d, 0x03},
-       {0x4507, 0x00},
-       {0x4509, 0x80},
+       {CCI_REG8(0x4003), 0x40},
+       {CCI_REG8(0x4008), 0x02},
+       {CCI_REG8(0x4009), 0x05},
+       {CCI_REG8(0x400c), 0x00},
+       {CCI_REG8(0x400d), 0x03},
+       {CCI_REG8(0x4507), 0x00},
+       {CCI_REG8(0x4509), 0x80},
 };
 
-static const struct ov9282_reg mode_640x400_regs[] = {
-       {0x3778, 0x10},
-       {0x3800, 0x00},
-       {0x3801, 0x00},
-       {0x3802, 0x00},
-       {0x3803, 0x00},
-       {0x3804, 0x05},
-       {0x3805, 0x0f},
-       {0x3806, 0x03},
-       {0x3807, 0x2f},
-       {0x3808, 0x02},
-       {0x3809, 0x80},
-       {0x380a, 0x01},
-       {0x380b, 0x90},
-       {0x3810, 0x00},
-       {0x3811, 0x04},
-       {0x3812, 0x00},
-       {0x3813, 0x04},
-       {0x3814, 0x31},
-       {0x3815, 0x22},
+static const struct cci_reg_sequence mode_640x400_regs[] = {
+       {CCI_REG8(0x3778), 0x10},
+       {CCI_REG8(0x3800), 0x00},
+       {CCI_REG8(0x3801), 0x00},
+       {CCI_REG8(0x3802), 0x00},
+       {CCI_REG8(0x3803), 0x00},
+       {CCI_REG8(0x3804), 0x05},
+       {CCI_REG8(0x3805), 0x0f},
+       {CCI_REG8(0x3806), 0x03},
+       {CCI_REG8(0x3807), 0x2f},
+       {CCI_REG8(0x3808), 0x02},
+       {CCI_REG8(0x3809), 0x80},
+       {CCI_REG8(0x380a), 0x01},
+       {CCI_REG8(0x380b), 0x90},
+       {CCI_REG8(0x3810), 0x00},
+       {CCI_REG8(0x3811), 0x04},
+       {CCI_REG8(0x3812), 0x00},
+       {CCI_REG8(0x3813), 0x04},
+       {CCI_REG8(0x3814), 0x31},
+       {CCI_REG8(0x3815), 0x22},
        {OV9282_REG_TIMING_FORMAT_1, 0x60},
        {OV9282_REG_TIMING_FORMAT_2, 0x01},
-       {0x4008, 0x02},
-       {0x4009, 0x05},
-       {0x400c, 0x00},
-       {0x400d, 0x03},
-       {0x4507, 0x03},
-       {0x4509, 0x80},
+       {CCI_REG8(0x4008), 0x02},
+       {CCI_REG8(0x4009), 0x05},
+       {CCI_REG8(0x400c), 0x00},
+       {CCI_REG8(0x400d), 0x03},
+       {CCI_REG8(0x4507), 0x03},
+       {CCI_REG8(0x4509), 0x80},
 };
 
 /* Supported sensor mode configurations */
@@ -485,97 +474,6 @@ static inline struct ov9282 *to_ov9282(struct v4l2_subdev *subdev)
        return container_of(subdev, struct ov9282, sd);
 }
 
-/**
- * ov9282_read_reg() - Read registers.
- * @ov9282: pointer to ov9282 device
- * @reg: register address
- * @len: length of bytes to read. Max supported bytes is 4
- * @val: pointer to register value to be filled.
- *
- * Return: 0 if successful, error code otherwise.
- */
-static int ov9282_read_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 *val)
-{
-       struct i2c_client *client = v4l2_get_subdevdata(&ov9282->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[4 - len];
-
-       ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
-       if (ret != ARRAY_SIZE(msgs))
-               return -EIO;
-
-       *val = get_unaligned_be32(data_buf);
-
-       return 0;
-}
-
-/**
- * ov9282_write_reg() - Write register
- * @ov9282: pointer to ov9282 device
- * @reg: register address
- * @len: length of bytes. Max supported bytes is 4
- * @val: register value
- *
- * Return: 0 if successful, error code otherwise.
- */
-static int ov9282_write_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 val)
-{
-       struct i2c_client *client = v4l2_get_subdevdata(&ov9282->sd);
-       u8 buf[6] = {0};
-
-       if (WARN_ON(len > 4))
-               return -EINVAL;
-
-       put_unaligned_be16(reg, buf);
-       put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
-       if (i2c_master_send(client, buf, len + 2) != len + 2)
-               return -EIO;
-
-       return 0;
-}
-
-/**
- * ov9282_write_regs() - Write a list of registers
- * @ov9282: pointer to ov9282 device
- * @regs: list of registers to be written
- * @len: length of registers array
- *
- * Return: 0 if successful, error code otherwise.
- */
-static int ov9282_write_regs(struct ov9282 *ov9282,
-                            const struct ov9282_reg *regs, u32 len)
-{
-       unsigned int i;
-       int ret;
-
-       for (i = 0; i < len; i++) {
-               ret = ov9282_write_reg(ov9282, regs[i].address, 1, regs[i].val);
-               if (ret)
-                       return ret;
-       }
-
-       return 0;
-}
-
 /**
  * ov9282_update_controls() - Update control ranges based on streaming mode
  * @ov9282: pointer to ov9282 device
@@ -633,21 +531,21 @@ static u32 ov9282_exposure_to_us(struct ov9282 *ov9282, u32 exposure)
  */
 static int ov9282_update_exp_gain(struct ov9282 *ov9282, u32 exposure, u32 gain)
 {
-       int ret;
        u32 exposure_us = ov9282_exposure_to_us(ov9282, exposure);
+       int ret, ret_hold;
 
        dev_dbg(ov9282->dev, "Set exp %u (~%u us), analog gain %u",
                exposure, exposure_us, gain);
 
-       ret = ov9282_write_reg(ov9282, OV9282_REG_HOLD, 1, 1);
+       ret = cci_write(ov9282->regmap, OV9282_REG_HOLD, 0x01, NULL);
        if (ret)
                return ret;
 
-       ret = ov9282_write_reg(ov9282, OV9282_REG_EXPOSURE, 3, exposure << 4);
+       ret = cci_write(ov9282->regmap, OV9282_REG_EXPOSURE, exposure << 4, NULL);
        if (ret)
                goto error_release_group_hold;
 
-       ret = ov9282_write_reg(ov9282, OV9282_REG_AGAIN, 1, gain);
+       ret = cci_write(ov9282->regmap, OV9282_REG_AGAIN, gain, NULL);
        if (ret)
                goto error_release_group_hold;
 
@@ -656,60 +554,9 @@ static int ov9282_update_exp_gain(struct ov9282 *ov9282, u32 exposure, u32 gain)
                                       OV9282_STROBE_FRAME_SPAN_DEFAULT);
 
 error_release_group_hold:
-       ov9282_write_reg(ov9282, OV9282_REG_HOLD, 1, 0);
-
-       return ret;
-}
-
-static int ov9282_set_ctrl_hflip(struct ov9282 *ov9282, int value)
-{
-       u32 current_val;
-       int ret = ov9282_read_reg(ov9282, OV9282_REG_TIMING_FORMAT_2, 1,
-                                 &current_val);
-       if (ret)
-               return ret;
+       ret_hold = cci_write(ov9282->regmap, OV9282_REG_HOLD, 0, NULL);
 
-       if (value)
-               current_val |= OV9282_FLIP_BIT;
-       else
-               current_val &= ~OV9282_FLIP_BIT;
-
-       return ov9282_write_reg(ov9282, OV9282_REG_TIMING_FORMAT_2, 1,
-                               current_val);
-}
-
-static int ov9282_set_ctrl_vflip(struct ov9282 *ov9282, int value)
-{
-       u32 current_val;
-       int ret = ov9282_read_reg(ov9282, OV9282_REG_TIMING_FORMAT_1, 1,
-                                 &current_val);
-       if (ret)
-               return ret;
-
-       if (value)
-               current_val |= OV9282_FLIP_BIT;
-       else
-               current_val &= ~OV9282_FLIP_BIT;
-
-       return ov9282_write_reg(ov9282, OV9282_REG_TIMING_FORMAT_1, 1,
-                               current_val);
-}
-
-static int ov9282_set_ctrl_flash_strobe_oe(struct ov9282 *ov9282, bool enable)
-{
-       u32 current_val;
-       int ret;
-
-       ret = ov9282_read_reg(ov9282, OV9282_REG_OUTPUT_ENABLE6, 1, &current_val);
-       if (ret)
-               return ret;
-
-       if (enable)
-               current_val |= OV9282_OUTPUT_ENABLE6_STROBE;
-       else
-               current_val &= ~OV9282_OUTPUT_ENABLE6_STROBE;
-
-       return ov9282_write_reg(ov9282, OV9282_REG_OUTPUT_ENABLE6, 1, current_val);
+       return ret ? ret : ret_hold;
 }
 
 static u32 ov9282_us_to_flash_duration(struct ov9282 *ov9282, u32 value)
@@ -740,30 +587,6 @@ static u32 ov9282_flash_duration_to_us(struct ov9282 *ov9282, u32 value)
        return DIV_ROUND_UP(value * frame_width, OV9282_STROBE_SPAN_FACTOR);
 }
 
-static int ov9282_set_ctrl_flash_duration(struct ov9282 *ov9282, u32 value)
-{
-       u32 val = ov9282_us_to_flash_duration(ov9282, value);
-       int ret;
-
-       ret = ov9282_write_reg(ov9282, OV9282_REG_STROBE_FRAME_SPAN, 1,
-                              (val >> 24) & 0xff);
-       if (ret)
-               return ret;
-
-       ret = ov9282_write_reg(ov9282, OV9282_REG_STROBE_FRAME_SPAN + 1, 1,
-                              (val >> 16) & 0xff);
-       if (ret)
-               return ret;
-
-       ret = ov9282_write_reg(ov9282, OV9282_REG_STROBE_FRAME_SPAN + 2, 1,
-                              (val >> 8) & 0xff);
-       if (ret)
-               return ret;
-
-       return ov9282_write_reg(ov9282, OV9282_REG_STROBE_FRAME_SPAN + 3, 1,
-                               val & 0xff);
-}
-
 /**
  * ov9282_set_ctrl() - Set subdevice control
  * @ctrl: pointer to v4l2_ctrl structure
@@ -818,23 +641,27 @@ static int ov9282_set_ctrl(struct v4l2_ctrl *ctrl)
                break;
        case V4L2_CID_VBLANK:
                lpfr = ov9282->vblank + ov9282->cur_mode->height;
-               ret = ov9282_write_reg(ov9282, OV9282_REG_LPFR, 2, lpfr);
+               ret = cci_write(ov9282->regmap, OV9282_REG_LPFR, lpfr, NULL);
                break;
        case V4L2_CID_HFLIP:
-               ret = ov9282_set_ctrl_hflip(ov9282, ctrl->val);
+               ret = cci_update_bits(ov9282->regmap, OV9282_REG_TIMING_FORMAT_2,
+                                     OV9282_FLIP_BIT, ctrl->val ? OV9282_FLIP_BIT : 0, NULL);
                break;
        case V4L2_CID_VFLIP:
-               ret = ov9282_set_ctrl_vflip(ov9282, ctrl->val);
+               ret = cci_update_bits(ov9282->regmap, OV9282_REG_TIMING_FORMAT_1,
+                                     OV9282_FLIP_BIT, ctrl->val ? OV9282_FLIP_BIT : 0, NULL);
                break;
        case V4L2_CID_HBLANK:
-               ret = ov9282_write_reg(ov9282, OV9282_REG_TIMING_HTS, 2,
-                                      (ctrl->val + ov9282->cur_mode->width) >> 1);
+               ret = cci_write(ov9282->regmap, OV9282_REG_TIMING_HTS,
+                               (ctrl->val + ov9282->cur_mode->width) >> 1, NULL);
                break;
        case V4L2_CID_FLASH_STROBE_OE:
-               ret = ov9282_set_ctrl_flash_strobe_oe(ov9282, ctrl->val);
+               ret = cci_update_bits(ov9282->regmap, OV9282_REG_OUTPUT_ENABLE6,
+                                     OV9282_OUTPUT_ENABLE6_STROBE,
+                                     ctrl->val ? OV9282_OUTPUT_ENABLE6_STROBE : 0, NULL);
                break;
        case V4L2_CID_FLASH_DURATION:
-               ret = ov9282_set_ctrl_flash_duration(ov9282, ctrl->val);
+               ret = cci_write(ov9282->regmap, OV9282_REG_STROBE_FRAME_SPAN, ctrl->val, NULL);
                break;
        default:
                dev_err(ov9282->dev, "Invalid control %d", ctrl->id);
@@ -1114,7 +941,7 @@ static int ov9282_get_selection(struct v4l2_subdev *sd,
  */
 static int ov9282_start_streaming(struct ov9282 *ov9282)
 {
-       const struct ov9282_reg bitdepth_regs[2][2] = {
+       const struct cci_reg_sequence bitdepth_regs[2][2] = {
                {
                        {OV9282_REG_PLL_CTRL_0D, OV9282_PLL_CTRL_0D_RAW10},
                        {OV9282_REG_ANA_CORE_2, OV9282_ANA_CORE2_RAW10},
@@ -1128,15 +955,16 @@ static int ov9282_start_streaming(struct ov9282 *ov9282)
        int ret;
 
        /* Write common registers */
-       ret = ov9282_write_regs(ov9282, common_regs_list.regs,
-                               common_regs_list.num_of_regs);
+       ret = cci_multi_reg_write(ov9282->regmap, common_regs,
+                                 ARRAY_SIZE(common_regs), NULL);
        if (ret) {
                dev_err(ov9282->dev, "fail to write common registers");
                return ret;
        }
 
        bitdepth_index = ov9282->code == MEDIA_BUS_FMT_Y10_1X10 ? 0 : 1;
-       ret = ov9282_write_regs(ov9282, bitdepth_regs[bitdepth_index], 2);
+       ret = cci_multi_reg_write(ov9282->regmap,
+                                 bitdepth_regs[bitdepth_index], 2, NULL);
        if (ret) {
                dev_err(ov9282->dev, "fail to write bitdepth regs");
                return ret;
@@ -1144,7 +972,8 @@ static int ov9282_start_streaming(struct ov9282 *ov9282)
 
        /* Write sensor mode registers */
        reg_list = &ov9282->cur_mode->reg_list;
-       ret = ov9282_write_regs(ov9282, reg_list->regs, reg_list->num_of_regs);
+       ret = cci_multi_reg_write(ov9282->regmap, reg_list->regs,
+                                 reg_list->num_of_regs, NULL);
        if (ret) {
                dev_err(ov9282->dev, "fail to write initial registers");
                return ret;
@@ -1158,8 +987,8 @@ static int ov9282_start_streaming(struct ov9282 *ov9282)
        }
 
        /* Start streaming */
-       ret = ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT,
-                              1, OV9282_MODE_STREAMING);
+       ret = cci_write(ov9282->regmap, OV9282_REG_MODE_SELECT,
+                       OV9282_MODE_STREAMING, NULL);
        if (ret) {
                dev_err(ov9282->dev, "fail to start streaming");
                return ret;
@@ -1176,8 +1005,8 @@ static int ov9282_start_streaming(struct ov9282 *ov9282)
  */
 static int ov9282_stop_streaming(struct ov9282 *ov9282)
 {
-       return ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT,
-                               1, OV9282_MODE_STANDBY);
+       return cci_write(ov9282->regmap, OV9282_REG_MODE_SELECT,
+                        OV9282_MODE_STANDBY, NULL);
 }
 
 /**
@@ -1228,14 +1057,14 @@ error_unlock:
 static int ov9282_detect(struct ov9282 *ov9282)
 {
        int ret;
-       u32 val;
+       u64 val;
 
-       ret = ov9282_read_reg(ov9282, OV9282_REG_ID, 2, &val);
+       ret = cci_read(ov9282->regmap, OV9282_REG_ID, &val, NULL);
        if (ret)
                return ret;
 
        if (val != OV9282_ID) {
-               dev_err(ov9282->dev, "chip id mismatch: %x!=%x",
+               dev_err(ov9282->dev, "chip id mismatch: %x!=%llx",
                        OV9282_ID, val);
                return -ENXIO;
        }
@@ -1397,9 +1226,8 @@ static int ov9282_power_on(struct device *dev)
 
        usleep_range(400, 600);
 
-       ret = ov9282_write_reg(ov9282, OV9282_REG_MIPI_CTRL00, 1,
-                              ov9282->noncontinuous_clock ?
-                                       OV9282_GATED_CLOCK : 0);
+       ret = cci_write(ov9282->regmap, OV9282_REG_MIPI_CTRL00,
+                       ov9282->noncontinuous_clock ? OV9282_GATED_CLOCK : 0, NULL);
        if (ret) {
                dev_err(ov9282->dev, "fail to write MIPI_CTRL00");
                goto error_clk;
@@ -1576,6 +1404,11 @@ static int ov9282_probe(struct i2c_client *client)
                return ret;
        }
 
+       ov9282->regmap = devm_cci_regmap_init_i2c(client, 16);
+       if (IS_ERR(ov9282->regmap))
+               return dev_err_probe(ov9282->dev, PTR_ERR(ov9282->regmap),
+                                    "Failed to init CCI\n");
+
        mutex_init(&ov9282->mutex);
 
        ret = ov9282_power_on(ov9282->dev);