media: i2c: Add the ov7740 image sensor driver
Commit Message
From: Songjun Wu <songjun.wu@microchip.com>
The ov7740 (color) image sensor is a high performance VGA CMOS
image snesor, which supports for output formats: RAW RGB and YUV
and image sizes: VGA, and QVGA, CIF and any size smaller.
Signed-off-by: Songjun Wu <songjun.wu@microchip.com>
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
---
.../devicetree/bindings/media/i2c/ov7740.txt | 43 +
drivers/media/i2c/Kconfig | 8 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/ov7740.c | 1220 ++++++++++++++++++++
4 files changed, 1272 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/ov7740.txt
create mode 100644 drivers/media/i2c/ov7740.c
Comments
On 10/27/2017 05:30 AM, Wenyou Yang wrote:
> From: Songjun Wu <songjun.wu@microchip.com>
>
> The ov7740 (color) image sensor is a high performance VGA CMOS
> image snesor, which supports for output formats: RAW RGB and YUV
> and image sizes: VGA, and QVGA, CIF and any size smaller.
Two short remarks: please split off the bindings into a separate
patch. And add a new entry to the MAINTAINERS file.
Regards,
Hans
>
> Signed-off-by: Songjun Wu <songjun.wu@microchip.com>
> Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
> ---
>
> .../devicetree/bindings/media/i2c/ov7740.txt | 43 +
> drivers/media/i2c/Kconfig | 8 +
> drivers/media/i2c/Makefile | 1 +
> drivers/media/i2c/ov7740.c | 1220 ++++++++++++++++++++
> 4 files changed, 1272 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/i2c/ov7740.txt
> create mode 100644 drivers/media/i2c/ov7740.c
>
> diff --git a/Documentation/devicetree/bindings/media/i2c/ov7740.txt b/Documentation/devicetree/bindings/media/i2c/ov7740.txt
> new file mode 100644
> index 000000000000..b306e5aa97bf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/ov7740.txt
> @@ -0,0 +1,43 @@
> +* Omnivision OV7740 CMOS image sensor
> +
> +The Omnivision OV7740 image sensor supports multiple output image
> +size, such as VGA, and QVGA, CIF and any size smaller. It also
> +supports the RAW RGB and YUV output formats.
> +
> +Required Properties:
> +- compatible: should be "ovti,ov7740"
> +- clocks: reference to the xvclk input clock.
> +- clock-names: should be "xvclk".
> +
> +Optional Properties:
> +- reset-gpios: reference to the GPIO connected to the reset_b pin,
> + if any. Active low with pull-ip resistor.
> +- powerdown-gpios: reference to the GPIO connected to the pwdn pin,
> + if any. Active high with pull-down resistor.
> +
> +The device node must contain one 'port' child node for its digital
> +output video port, in accordance with the video interface bindings
> +defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
> +
> +Example:
> +
> + i2c1: i2c@fc028000 {
> + ov7740: camera@21 {
> + compatible = "ovti,ov7740";
> + reg = <0x21>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_sensor_power &pinctrl_sensor_reset>;
> + clocks = <&isc>;
> + clock-names = "xvclk";
> + assigned-clocks = <&isc>;
> + assigned-clock-rates = <24000000>;
> + reset-gpios = <&pioA 43 GPIO_ACTIVE_LOW>;
> + powerdown-gpios = <&pioA 44 GPIO_ACTIVE_HIGH>;
> +
> + port {
> + ov7740_0: endpoint {
> + remote-endpoint = <&isc_0>;
> + };
> + };
> + };
> + };
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 47113774a297..402ad0e4024c 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -657,6 +657,14 @@ config VIDEO_OV7670
> OV7670 VGA camera. It currently only works with the M88ALP01
> controller.
>
> +config VIDEO_OV7740
> + tristate "OmniVision OV7740 sensor support"
> + depends on I2C && VIDEO_V4L2
> + depends on MEDIA_CAMERA_SUPPORT
> + ---help---
> + This is a Video4Linux2 sensor-level driver for the OmniVision
> + OV7740 VGA camera sensor.
> +
> config VIDEO_OV9650
> tristate "OmniVision OV9650/OV9652 sensor support"
> depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index c843c181dfb9..f94cb2a8ed91 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_OV5670) += ov5670.o
> obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
> obj-$(CONFIG_VIDEO_OV7640) += ov7640.o
> obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
> +obj-$(CONFIG_VIDEO_OV7740) += ov7740.o
> obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
> obj-$(CONFIG_VIDEO_OV13858) += ov13858.o
> obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o
> diff --git a/drivers/media/i2c/ov7740.c b/drivers/media/i2c/ov7740.c
> new file mode 100644
> index 000000000000..d68add05b46e
> --- /dev/null
> +++ b/drivers/media/i2c/ov7740.c
> @@ -0,0 +1,1220 @@
> +/*
> + * Copyright (c) 2017 Microchip Corporation.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License version
> + * 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/gpio.h>
> +#include <linux/i2c.h>
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regmap.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-image-sizes.h>
> +#include <media/v4l2-subdev.h>
> +
> +#define REG_OUTSIZE_LSB 0x34
> +
> +/* OV7740 register tables */
> +#define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */
> +#define REG_BGAIN 0x01 /* blue gain */
> +#define REG_RGAIN 0x02 /* red gain */
> +#define REG_GGAIN 0x03 /* green gain */
> +#define REG_REG04 0x04 /* analog setting, dont change*/
> +#define REG_BAVG 0x05 /* b channel average */
> +#define REG_GAVG 0x06 /* g channel average */
> +#define REG_RAVG 0x07 /* r channel average */
> +
> +#define REG_REG0C 0x0C /* filp enable */
> +#define REG0C_IMG_FLIP 0x80
> +#define REG0C_IMG_MIRROR 0x40
> +
> +#define REG_REG0E 0x0E /* blc line */
> +#define REG_HAEC 0x0F /* auto exposure cntrl */
> +#define REG_AEC 0x10 /* auto exposure cntrl */
> +
> +#define REG_CLK 0x11 /* Clock control */
> +#define REG_REG55 0x55 /* Clock PLL DIV/PreDiv */
> +
> +#define REG_REG12 0x12
> +
> +#define REG_REG13 0x13 /* auto/manual AGC, AEC, Write Balance*/
> +#define REG13_AEC_EN 0x01
> +#define REG13_AGC_EN 0x04
> +
> +#define REG_REG14 0x14
> +#define REG_REG15 0x15
> +#define REG15_GAIN_MSB 0x03
> +
> +#define REG_REG16 0x16
> +
> +#define REG_MIDH 0x1C /* manufacture id byte */
> +#define REG_MIDL 0x1D /* manufacture id byre */
> +#define REG_PIDH 0x0A /* Product ID MSB */
> +#define REG_PIDL 0x0B /* Product ID LSB */
> +
> +#define REG_84 0x84 /* lots of stuff */
> +#define REG_REG38 0x38 /* sub-addr */
> +
> +#define REG_AHSTART 0x17 /* Horiz start high bits */
> +#define REG_AHSIZE 0x18
> +#define REG_AVSTART 0x19 /* Vert start high bits */
> +#define REG_AVSIZE 0x1A
> +#define REG_PSHFT 0x1b /* Pixel delay after HREF */
> +
> +#define REG_HOUTSIZE 0x31
> +#define REG_VOUTSIZE 0x32
> +#define REG_HVSIZEOFF 0x33
> +#define REG_REG34 0x34 /* DSP output size H/V LSB*/
> +
> +#define REG_ISP_CTRL00 0x80
> +#define ISPCTRL00_AWB_EN 0x10
> +#define ISPCTRL00_AWB_GAIN_EN 0x04
> +
> +#define REG_YGAIN 0xE2 /* ygain for contrast control */
> +
> +#define REG_YBRIGHT 0xE3
> +#define REG_SGNSET 0xE4
> +#define SGNSET_YBRIGHT_MASK 0x08
> +
> +#define REG_USAT 0xDD
> +#define REG_VSAT 0xDE
> +
> +
> +struct ov7740 {
> + struct v4l2_subdev subdev;
> +#if defined(CONFIG_MEDIA_CONTROLLER)
> + struct media_pad pad;
> +#endif
> + struct v4l2_mbus_framefmt format;
> + struct ov7740_pixfmt *fmt; /* Current format */
> + struct ov7740_framesize *frmsize;
> + struct regmap *regmap;
> + struct clk *xvclk;
> + struct v4l2_ctrl_handler ctrl_handler;
> + struct {
> + /* gain cluster */
> + struct v4l2_ctrl *auto_gain;
> + struct v4l2_ctrl *gain;
> + };
> + struct {
> + struct v4l2_ctrl *auto_wb;
> + struct v4l2_ctrl *blue_balance;
> + struct v4l2_ctrl *red_balance;
> + };
> + struct {
> + struct v4l2_ctrl *hflip;
> + struct v4l2_ctrl *vflip;
> + };
> + struct {
> + /* exposure cluster */
> + struct v4l2_ctrl *auto_exposure;
> + struct v4l2_ctrl *exposure;
> + };
> + struct {
> + /* saturation/hue cluster */
> + struct v4l2_ctrl *saturation;
> + struct v4l2_ctrl *hue;
> + };
> + struct v4l2_ctrl *brightness;
> + struct v4l2_ctrl *contrast;
> +
> + struct mutex mutex; /* To serialize asynchronus callbacks */
> + bool streaming; /* Streaming on/off */
> +
> + struct gpio_desc *resetb_gpio;
> + struct gpio_desc *pwdn_gpio;
> +};
> +
> +struct ov7740_pixfmt {
> + u32 mbus_code;
> + enum v4l2_colorspace colorspace;
> + const struct reg_sequence *regs;
> + u32 reg_num;
> +};
> +
> +struct ov7740_framesize {
> + u16 width;
> + u16 height;
> + const struct reg_sequence *regs;
> + u32 reg_num;
> +};
> +
> +static const struct reg_sequence ov7740_vga[] = {
> + {0x55, 0x40},
> + {0x11, 0x02},
> +
> + {0xd5, 0x10},
> + {0x0c, 0x12},
> + {0x0d, 0x34},
> + {0x17, 0x25},
> + {0x18, 0xa0},
> + {0x19, 0x03},
> + {0x1a, 0xf0},
> + {0x1b, 0x89},
> + {0x22, 0x03},
> + {0x29, 0x18},
> + {0x2b, 0xf8},
> + {0x2c, 0x01},
> + {REG_HOUTSIZE, 0xa0},
> + {REG_VOUTSIZE, 0xf0},
> + {0x33, 0xc4},
> + {REG_OUTSIZE_LSB, 0x0},
> + {0x35, 0x05},
> + //{0x36, 0x3f},
> + {0x04, 0x60},
> + {0x27, 0x80},
> + {0x3d, 0x0f},
> + {0x3e, 0x80},
> + {0x3f, 0x40},
> + {0x40, 0x7f},
> + {0x41, 0x6a},
> + {0x42, 0x29},
> + {0x44, 0x22},
> + {0x45, 0x41},
> + {0x47, 0x02},
> + {0x49, 0x64},
> + {0x4a, 0xa1},
> + {0x4b, 0x40},
> + {0x4c, 0x1a},
> + {0x4d, 0x50},
> + {0x4e, 0x13},
> + {0x64, 0x00},
> + {0x67, 0x88},
> + {0x68, 0x1a},
> +
> + {0x14, 0x28},
> + {0x24, 0x3c},
> + {0x25, 0x30},
> + {0x26, 0x72},
> + {0x50, 0x97},
> + {0x51, 0x1f},
> + {0x52, 0x00},
> + {0x53, 0x00},
> + {0x20, 0x00},
> + {0x21, 0xcf},
> + {0x50, 0x4b},
> + {0x38, 0x14},
> + {0xe9, 0x00},
> + {0x56, 0x55},
> + {0x57, 0xff},
> + {0x58, 0xff},
> + {0x59, 0xff},
> + {0x5f, 0x04},
> + {0xec, 0x00},
> + {0x13, 0xff},
> +
> + //{0x80,0x7f},
> + {0x81, 0x3f},
> + {0x82, 0x32},
> + //{0x83, 0x01},
> + {0x38, 0x11},
> + {0x84, 0x70},
> + {0x85, 0x00},
> + {0x86, 0x03},
> + {0x87, 0x01},
> + {0x88, 0x05},
> + {0x89, 0x30},
> + {0x8d, 0x30},
> + {0x8f, 0x85},
> + {0x93, 0x30},
> + {0x95, 0x85},
> + {0x99, 0x30},
> + {0x9b, 0x85},
> +
> + {0x9c, 0x08},
> + {0x9d, 0x12},
> + {0x9e, 0x23},
> + {0x9f, 0x45},
> + {0xa0, 0x55},
> + {0xa1, 0x64},
> + {0xa2, 0x72},
> + {0xa3, 0x7f},
> + {0xa4, 0x8b},
> + {0xa5, 0x95},
> + {0xa6, 0xa7},
> + {0xa7, 0xb5},
> + {0xa8, 0xcb},
> + {0xa9, 0xdd},
> + {0xaa, 0xec},
> + {0xab, 0x1a},
> +
> + {0xce, 0x78},
> + {0xcf, 0x6e},
> + {0xd0, 0x0a},
> + {0xd1, 0x0c},
> + {0xd2, 0x84},
> + {0xd3, 0x90},
> + {0xd4, 0x1e},
> +
> + {0x5a, 0x24},
> + {0x5b, 0x1f},
> + {0x5c, 0x88},
> + {0x5d, 0x60},
> +
> + {0xac, 0x6e},
> + {0xbe, 0xff},
> + {0xbf, 0x00},
> +
> + {0x0f, 0x1d},
> + {0x0f, 0x1f},
> +};
> +
> +static struct ov7740_framesize ov7740_framesizes[] = {
> + {
> + .width = VGA_WIDTH,
> + .height = VGA_HEIGHT,
> + .regs = ov7740_vga,
> + .reg_num = ARRAY_SIZE(ov7740_vga),
> + },
> +};
> +
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> +static int ov7740_get_register(struct v4l2_subdev *sd,
> + struct v4l2_dbg_register *reg)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> + struct regmap *regmap = ov7740->regmap;
> + unsigned int val = 0;
> + int ret;
> +
> + ret = regmap_read(regmap, reg->reg & 0xff, &val);
> + reg->val = val;
> + reg->size = 1;
> +
> + return 0;
> +}
> +
> +static int ov7740_set_register(struct v4l2_subdev *sd,
> + const struct v4l2_dbg_register *reg)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> + struct regmap *regmap = ov7740->regmap;
> +
> + regmap_write(regmap, reg->reg & 0xff, reg->val & 0xff);
> +
> + return 0;
> +}
> +#endif
> +
> +static int ov7740_set_power(struct v4l2_subdev *sd, int on)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> +
> + if (ov7740->pwdn_gpio)
> + gpiod_direction_output(ov7740->pwdn_gpio, !on);
> + if (on && ov7740->resetb_gpio) {
> + gpiod_set_value(ov7740->resetb_gpio, 1);
> + usleep_range(500, 1000);
> + gpiod_set_value(ov7740->resetb_gpio, 0);
> + usleep_range(3000, 5000);
> + }
> +
> + return 0;
> +}
> +
> +static struct v4l2_subdev_core_ops ov7740_subdev_core_ops = {
> + .log_status = v4l2_ctrl_subdev_log_status,
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> + .g_register = ov7740_get_register,
> + .s_register = ov7740_set_register,
> +#endif
> + .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
> + .unsubscribe_event = v4l2_event_subdev_unsubscribe,
> +};
> +
> +static int ov7740_set_white_balance(struct ov7740 *ov7740, int awb)
> +{
> + struct regmap *regmap = ov7740->regmap;
> + unsigned int value;
> + int ret;
> +
> + ret = regmap_read(regmap, REG_ISP_CTRL00, &value);
> + if (!ret) {
> + if (awb)
> + value |= (ISPCTRL00_AWB_EN | ISPCTRL00_AWB_GAIN_EN);
> + else
> + value &= ~(ISPCTRL00_AWB_EN | ISPCTRL00_AWB_GAIN_EN);
> + ret = regmap_write(regmap, REG_ISP_CTRL00, value);
> + if (ret)
> + return ret;
> + }
> +
> + if (!awb) {
> + ret = regmap_write(regmap, REG_BGAIN,
> + ov7740->blue_balance->val);
> + if (ret)
> + return ret;
> +
> + ret = regmap_write(regmap, REG_RGAIN, ov7740->red_balance->val);
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int ov7740_set_saturation(struct regmap *regmap, int value)
> +{
> + int ret;
> +
> + ret = regmap_write(regmap, REG_USAT, (unsigned char)value);
> + ret = regmap_write(regmap, REG_VSAT, (unsigned char)value);
> +
> + return ret;
> +}
> +
> +static int ov7740_set_gain(struct regmap *regmap, int value)
> +{
> + int ret;
> +
> + ret = regmap_write(regmap, REG_GAIN, value & 0xff);
> + if (ret)
> + return ret;
> +
> + ret = regmap_update_bits(regmap, REG_REG15,
> + REG15_GAIN_MSB, (value >> 8) & 0x3);
> + if (!ret)
> + ret = regmap_update_bits(regmap, REG_REG13, REG13_AGC_EN, 0);
> +
> + return ret;
> +}
> +
> +static int ov7740_set_autogain(struct regmap *regmap, int value)
> +{
> + unsigned int reg;
> + int ret;
> +
> + ret = regmap_read(regmap, REG_REG13, ®);
> + if (ret)
> + return ret;
> + if (value)
> + reg |= REG13_AGC_EN;
> + else
> + reg &= ~REG13_AGC_EN;
> + return regmap_write(regmap, REG_REG13, reg);
> +}
> +
> +static int ov7740_set_brightness(struct regmap *regmap, int value)
> +{
> + /* Turn off AEC/AGC */
> + regmap_update_bits(regmap, REG_REG13, REG13_AEC_EN, 0);
> + regmap_update_bits(regmap, REG_REG13, REG13_AGC_EN, 0);
> +
> + if (value >= 0) {
> + regmap_write(regmap, REG_YBRIGHT, (unsigned char)value);
> + regmap_update_bits(regmap, REG_SGNSET, SGNSET_YBRIGHT_MASK, 0);
> + } else{
> + regmap_write(regmap, REG_YBRIGHT, (unsigned char)(-value));
> + regmap_update_bits(regmap, REG_SGNSET, SGNSET_YBRIGHT_MASK, 1);
> + }
> +
> + return 0;
> +}
> +
> +static int ov7740_set_contrast(struct regmap *regmap, int value)
> +{
> + return regmap_write(regmap, REG_YGAIN, (unsigned char)value);
> +}
> +
> +static int ov7740_get_gain(struct ov7740 *ov7740, struct v4l2_ctrl *ctrl)
> +{
> + struct regmap *regmap = ov7740->regmap;
> + unsigned int value0, value1;
> + int ret;
> +
> + if (!ctrl->val)
> + return 0;
> +
> + ret = regmap_read(regmap, REG_GAIN, &value0);
> + if (ret)
> + return ret;
> + ret = regmap_read(regmap, REG_REG15, &value1);
> + if (ret)
> + return ret;
> +
> + ov7740->gain->val = (value1 << 8) | (value0 & 0xff);
> +
> + return 0;
> +}
> +
> +static int ov7740_set_exp(struct regmap *regmap, int value)
> +{
> + int ret;
> +
> + /* Turn off AEC/AGC */
> + ret = regmap_update_bits(regmap, REG_REG13,
> + REG13_AEC_EN | REG13_AGC_EN, 0);
> + if (ret)
> + return ret;
> +
> + ret = regmap_write(regmap, REG_AEC, (unsigned char)value);
> + if (ret)
> + return ret;
> +
> + return regmap_write(regmap, REG_HAEC, (unsigned char)(value >> 8));
> +}
> +
> +static int ov7740_set_autoexp(struct regmap *regmap,
> + enum v4l2_exposure_auto_type value)
> +{
> + unsigned int reg;
> + int ret;
> +
> + ret = regmap_read(regmap, REG_REG13, ®);
> + if (!ret) {
> + if (value == V4L2_EXPOSURE_AUTO)
> + reg |= (REG13_AEC_EN | REG13_AGC_EN);
> + else
> + reg &= ~(REG13_AEC_EN | REG13_AGC_EN);
> + ret = regmap_write(regmap, REG_REG13, reg);
> + }
> +
> + return ret;
> +}
> +
> +
> +static int ov7740_get_volatile_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct ov7740 *ov7740 = container_of(ctrl->handler,
> + struct ov7740, ctrl_handler);
> + int ret;
> +
> + switch (ctrl->id) {
> + case V4L2_CID_AUTOGAIN:
> + ret = ov7740_get_gain(ov7740, ctrl);
> + break;
> + default:
> + ret = -EINVAL;
> + break;
> + }
> + return ret;
> +}
> +
> +static int ov7740_set_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct ov7740 *ov7740 = container_of(ctrl->handler,
> + struct ov7740, ctrl_handler);
> + struct i2c_client *client = v4l2_get_subdevdata(&ov7740->subdev);
> + struct regmap *regmap = ov7740->regmap;
> + int ret;
> + u8 val;
> +
> + if (pm_runtime_get_if_in_use(&client->dev) <= 0)
> + return 0;
> +
> + switch (ctrl->id) {
> + case V4L2_CID_AUTO_WHITE_BALANCE:
> + ret = ov7740_set_white_balance(ov7740, ctrl->val);
> + break;
> + case V4L2_CID_SATURATION:
> + ret = ov7740_set_saturation(regmap, ctrl->val);
> + break;
> + case V4L2_CID_BRIGHTNESS:
> + ret = ov7740_set_brightness(regmap, ctrl->val);
> + break;
> + case V4L2_CID_CONTRAST:
> + ret = ov7740_set_contrast(regmap, ctrl->val);
> + break;
> + case V4L2_CID_VFLIP:
> + ret = regmap_update_bits(regmap, REG_REG0C,
> + REG0C_IMG_FLIP, val);
> + break;
> + case V4L2_CID_HFLIP:
> + val = ctrl->val ? REG0C_IMG_MIRROR : 0x00;
> + ret = regmap_update_bits(regmap, REG_REG0C,
> + REG0C_IMG_MIRROR, val);
> + break;
> + case V4L2_CID_AUTOGAIN:
> + if (!ctrl->val)
> + return ov7740_set_gain(regmap, ov7740->gain->val);
> +
> + ret = ov7740_set_autogain(regmap, ctrl->val);
> + break;
> +
> + case V4L2_CID_EXPOSURE_AUTO:
> + if (ctrl->val == V4L2_EXPOSURE_MANUAL)
> + return ov7740_set_exp(regmap, ov7740->exposure->val);
> +
> + ret = ov7740_set_autoexp(regmap, ctrl->val);
> + break;
> + default:
> + ret = -EINVAL;
> + break;
> + }
> +
> + pm_runtime_put(&client->dev);
> +
> + return ret;
> +}
> +
> +static const struct v4l2_ctrl_ops ov7740_ctrl_ops = {
> + .g_volatile_ctrl = ov7740_get_volatile_ctrl,
> + .s_ctrl = ov7740_set_ctrl,
> +};
> +
> +static int ov7740_start_streaming(struct ov7740 *ov7740)
> +{
> + int ret;
> +
> + /* Apply customized values from user */
> + ret = __v4l2_ctrl_handler_setup(ov7740->subdev.ctrl_handler);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +static int ov7740_set_stream(struct v4l2_subdev *sd, int enable)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> + struct i2c_client *client = v4l2_get_subdevdata(sd);
> + int ret = 0;
> +
> + mutex_lock(&ov7740->mutex);
> + if (ov7740->streaming == enable) {
> + mutex_unlock(&ov7740->mutex);
> + return 0;
> + }
> +
> + if (enable) {
> + ret = pm_runtime_get_sync(&client->dev);
> + if (ret < 0) {
> + pm_runtime_put_noidle(&client->dev);
> + goto err_unlock;
> + }
> +
> + ret = ov7740_start_streaming(ov7740);
> + if (ret)
> + goto err_rpm_put;
> + } else {
> + pm_runtime_put(&client->dev);
> + }
> +
> + ov7740->streaming = enable;
> +
> + mutex_unlock(&ov7740->mutex);
> + return ret;
> +
> +err_rpm_put:
> + pm_runtime_put(&client->dev);
> +err_unlock:
> + mutex_unlock(&ov7740->mutex);
> + return ret;
> +}
> +
> +static int ov7740_get_parm(struct v4l2_subdev *sd,
> + struct v4l2_streamparm *parms)
> +{
> + struct v4l2_captureparm *cp = &parms->parm.capture;
> + struct v4l2_fract *tpf = &cp->timeperframe;
> +
> + if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + return -EINVAL;
> +
> + memset(cp, 0, sizeof(struct v4l2_captureparm));
> + cp->capability = V4L2_CAP_TIMEPERFRAME;
> +
> + tpf->numerator = 1;
> + tpf->denominator = 60;
> +
> + return 0;
> +}
> +
> +static int ov7740_set_parm(struct v4l2_subdev *sd,
> + struct v4l2_streamparm *parms)
> +{
> + struct v4l2_captureparm *cp = &parms->parm.capture;
> + struct v4l2_fract *tpf = &cp->timeperframe;
> +
> + if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + return -EINVAL;
> + if (cp->extendedmode != 0)
> + return -EINVAL;
> +
> + cp->capability = V4L2_CAP_TIMEPERFRAME;
> +
> + tpf->numerator = 1;
> + tpf->denominator = 60;
> +
> + return 0;
> +}
> +
> +static struct v4l2_subdev_video_ops ov7740_subdev_video_ops = {
> + .s_stream = ov7740_set_stream,
> + .s_parm = ov7740_set_parm,
> + .g_parm = ov7740_get_parm,
> +};
> +
> +static const struct reg_sequence ov7740_format_yuyv[] = {
> + {0x12, 0x00},
> + {0x36, 0x3f},
> + {0x80, 0x7f},
> + {0x83, 0x01},
> +};
> +
> +static const struct reg_sequence ov7740_format_bggr8[] = {
> + {0x36, 0x2f},
> + {0x80, 0x01},
> + {0x83, 0x04},
> +};
> +
> +static struct ov7740_pixfmt ov7740_formats[] = {
> + {
> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .regs = ov7740_format_yuyv,
> + .reg_num = ARRAY_SIZE(ov7740_format_yuyv),
> + },
> + {
> + .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
> + .colorspace = V4L2_COLORSPACE_SRGB,
> + .regs = ov7740_format_bggr8,
> + .reg_num = ARRAY_SIZE(ov7740_format_bggr8),
> + }
> +};
> +#define N_OV7740_FMTS ARRAY_SIZE(ov7740_formats)
> +
> +static int ov7740_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + if (code->pad || code->index >= N_OV7740_FMTS)
> + return -EINVAL;
> +
> + code->code = ov7740_formats[code->index].mbus_code;
> +
> + return 0;
> +}
> +
> +static int ov7740_enum_frame_interval(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_frame_interval_enum *fie)
> +{
> + if (fie->pad)
> + return -EINVAL;
> +
> + if (fie->index >= 1)
> + return -EINVAL;
> +
> + if ((fie->width != VGA_WIDTH) || (fie->height != VGA_HEIGHT))
> + return -EINVAL;
> +
> + fie->interval.numerator = 1;
> + fie->interval.denominator = 60;
> +
> + return 0;
> +}
> +
> +static int ov7740_enum_frame_size(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_frame_size_enum *fse)
> +{
> + if (fse->pad)
> + return -EINVAL;
> +
> + if (fse->index > 0)
> + return -EINVAL;
> +
> + fse->min_width = fse->max_width = VGA_WIDTH;
> + fse->min_height = fse->max_height = VGA_HEIGHT;
> +
> + return 0;
> +}
> +
> +static int ov7740_try_fmt_internal(struct v4l2_subdev *sd,
> + struct v4l2_mbus_framefmt *fmt,
> + struct ov7740_pixfmt **ret_fmt,
> + struct ov7740_framesize **ret_frmsize)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> + struct ov7740_framesize *fsize = &ov7740_framesizes[0];
> + int index, i;
> +
> + for (index = 0; index < N_OV7740_FMTS; index++) {
> + if (ov7740_formats[index].mbus_code == fmt->code)
> + break;
> + }
> + if (index >= N_OV7740_FMTS) {
> + /* default to first format */
> + index = 0;
> + fmt->code = ov7740_formats[0].mbus_code;
> + }
> + if (ret_fmt != NULL)
> + *ret_fmt = ov7740_formats + index;
> +
> + for (i = 0; i < ARRAY_SIZE(ov7740_framesizes); i++) {
> + if ((fsize->width >= fmt->width) &&
> + (fsize->height >= fmt->height)) {
> + fmt->width = fsize->width;
> + fmt->height = fsize->height;
> + break;
> + }
> +
> + fsize++;
> + }
> +
> + if (ret_frmsize != NULL)
> + *ret_frmsize = fsize;
> +
> + fmt->field = V4L2_FIELD_NONE;
> + fmt->colorspace = ov7740_formats[index].colorspace;
> +
> + ov7740->format = *fmt;
> +
> + return 0;
> +}
> +
> +static int ov7740_set_fmt(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> + struct ov7740_pixfmt *ovfmt;
> + struct ov7740_framesize *fsize;
> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> + struct v4l2_mbus_framefmt *mbus_fmt;
> +#endif
> + int ret;
> +
> + mutex_lock(&ov7740->mutex);
> + if (format->pad) {
> + ret = -EINVAL;
> + goto error;
> + }
> +
> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
> + ret = ov7740_try_fmt_internal(sd, &format->format, NULL, NULL);
> + if (ret)
> + goto error;
> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> + mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
> + *mbus_fmt = format->format;
> +
> + mutex_unlock(&ov7740->mutex);
> + return 0;
> +#else
> + ret = -ENOTTY;
> + goto error;
> +#endif
> + }
> +
> + ret = ov7740_try_fmt_internal(sd, &format->format, &ovfmt, &fsize);
> + if (ret)
> + goto error;
> +
> + if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
> + regmap_multi_reg_write(ov7740->regmap,
> + ovfmt->regs, ovfmt->reg_num);
> +
> + regmap_multi_reg_write(ov7740->regmap,
> + fsize->regs, fsize->reg_num);
> + }
> +
> + ov7740->fmt = ovfmt;
> +
> + mutex_unlock(&ov7740->mutex);
> + return 0;
> +
> +error:
> + mutex_unlock(&ov7740->mutex);
> + return ret;
> +}
> +
> +static int ov7740_get_fmt(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> + struct v4l2_mbus_framefmt *mbus_fmt;
> +#endif
> + int ret = 0;
> +
> + mutex_lock(&ov7740->mutex);
> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> + mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
> + format->format = *mbus_fmt;
> + ret = 0;
> +#else
> + ret = -ENOTTY;
> +#endif
> + } else {
> + format->format = ov7740->format;
> + }
> + mutex_unlock(&ov7740->mutex);
> +
> + return ret;
> +}
> +
> +static const struct v4l2_subdev_pad_ops ov7740_subdev_pad_ops = {
> + .enum_frame_interval = ov7740_enum_frame_interval,
> + .enum_frame_size = ov7740_enum_frame_size,
> + .enum_mbus_code = ov7740_enum_mbus_code,
> + .get_fmt = ov7740_get_fmt,
> + .set_fmt = ov7740_set_fmt,
> +};
> +
> +static struct v4l2_subdev_ops ov7740_subdev_ops = {
> + .core = &ov7740_subdev_core_ops,
> + .video = &ov7740_subdev_video_ops,
> + .pad = &ov7740_subdev_pad_ops,
> +};
> +
> +static void ov7740_get_default_format(struct v4l2_subdev *sd,
> + struct v4l2_mbus_framefmt *format)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> +
> + format->width = ov7740->frmsize->width;
> + format->height = ov7740->frmsize->height;
> + format->colorspace = ov7740->fmt->colorspace;
> + format->code = ov7740->fmt->mbus_code;
> + format->field = V4L2_FIELD_NONE;
> +}
> +
> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> +static int ov7740_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> +{
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> + struct v4l2_mbus_framefmt *format =
> + v4l2_subdev_get_try_format(sd, fh->pad, 0);
> +
> + mutex_lock(&ov7740->mutex);
> + ov7740_get_default_format(sd, format);
> + mutex_unlock(&ov7740->mutex);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_internal_ops ov7740_subdev_internal_ops = {
> + .open = ov7740_open,
> +};
> +#endif
> +
> +static int ov7740_probe_dt(struct i2c_client *client,
> + struct ov7740 *ov7740)
> +{
> + ov7740->resetb_gpio = devm_gpiod_get_optional(&client->dev, "reset",
> + GPIOD_OUT_LOW);
> + if (IS_ERR(ov7740->resetb_gpio)) {
> + dev_info(&client->dev, "can't get %s GPIO\n", "reset");
> + return PTR_ERR(ov7740->resetb_gpio);
> + }
> +
> + ov7740->pwdn_gpio = devm_gpiod_get_optional(&client->dev, "powerdown",
> + GPIOD_OUT_HIGH);
> + if (IS_ERR(ov7740->pwdn_gpio)) {
> + dev_info(&client->dev, "can't get %s GPIO\n", "powerdown");
> + return PTR_ERR(ov7740->pwdn_gpio);
> + }
> +
> + return 0;
> +}
> +
> +static int ov7740_detect(struct ov7740 *ov7740)
> +{
> + struct regmap *regmap = ov7740->regmap;
> + unsigned int midh, midl, pidh, pidl;
> + int ret;
> +
> + ret = regmap_read(regmap, REG_MIDH, &midh);
> + if (ret)
> + return ret;
> + if (midh != 0x7f)
> + return -ENODEV;
> +
> + ret = regmap_read(regmap, REG_MIDL, &midl);
> + if (ret)
> + return ret;
> + if (midl != 0xa2)
> + return -ENODEV;
> +
> + ret = regmap_read(regmap, REG_PIDH, &pidh);
> + if (ret)
> + return ret;
> + if (pidh != 0x77)
> + return -ENODEV;
> +
> + ret = regmap_read(regmap, REG_PIDL, &pidl);
> + if (ret)
> + return ret;
> + if ((pidl != 0x40) && (pidl != 0x41) && (pidl != 0x42))
> + return -ENODEV;
> +
> + return 0;
> +}
> +
> +static int ov7740_init_controls(struct ov7740 *ov7740)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&ov7740->subdev);
> + struct v4l2_ctrl_handler *ctrl_hdlr = &ov7740->ctrl_handler;
> + int ret;
> +
> + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 2);
> + if (ret < 0)
> + return ret;
> +
> + ctrl_hdlr->lock = &ov7740->mutex;
> + ov7740->auto_wb = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_AUTO_WHITE_BALANCE,
> + 0, 1, 1, 1);
> + ov7740->blue_balance = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_BLUE_BALANCE,
> + 0, 0xff, 1, 0x80);
> + ov7740->red_balance = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_RED_BALANCE,
> + 0, 0xff, 1, 0x80);
> +
> + ov7740->brightness = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_BRIGHTNESS,
> + -255, 255, 1, 0);
> + ov7740->contrast = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_CONTRAST,
> + 0, 127, 1, 0x20);
> + ov7740->saturation = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_SATURATION, 0, 256, 1, 0x80);
> + ov7740->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_HFLIP, 0, 1, 1, 0);
> + ov7740->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_VFLIP, 0, 1, 1, 0);
> + ov7740->gain = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_GAIN, 0, 1023, 1, 500);
> + ov7740->auto_gain = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
> + ov7740->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
> + V4L2_CID_EXPOSURE, 0, 65535, 1, 500);
> + ov7740->auto_exposure = v4l2_ctrl_new_std_menu(ctrl_hdlr,
> + &ov7740_ctrl_ops,
> + V4L2_CID_EXPOSURE_AUTO,
> + V4L2_EXPOSURE_MANUAL, 0,
> + V4L2_EXPOSURE_AUTO);
> +
> + ov7740->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
> + ov7740->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
> +
> + v4l2_ctrl_auto_cluster(3, &ov7740->auto_wb, 0, false);
> + v4l2_ctrl_auto_cluster(2, &ov7740->auto_gain, 0, true);
> + v4l2_ctrl_auto_cluster(2, &ov7740->auto_exposure,
> + V4L2_EXPOSURE_MANUAL, false);
> + v4l2_ctrl_cluster(2, &ov7740->hflip);
> +
> + ret = v4l2_ctrl_handler_setup(ctrl_hdlr);
> + if (ret) {
> + dev_err(&client->dev, "%s control init failed (%d)\n",
> + __func__, ret);
> + goto error;
> + }
> +
> + ov7740->subdev.ctrl_handler = ctrl_hdlr;
> + return 0;
> +
> +error:
> + v4l2_ctrl_handler_free(ctrl_hdlr);
> + mutex_destroy(&ov7740->mutex);
> + return ret;
> +}
> +
> +static void ov7740_free_controls(struct ov7740 *ov7740)
> +{
> + v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
> + mutex_destroy(&ov7740->mutex);
> +}
> +
> +#define OV7740_MAX_REGISTER 0xff
> +static const struct regmap_config ov7740_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = OV7740_MAX_REGISTER,
> +};
> +
> +static int ov7740_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct ov7740 *ov7740;
> + struct v4l2_subdev *sd;
> + int ret;
> +
> + if (!i2c_check_functionality(client->adapter,
> + I2C_FUNC_SMBUS_BYTE_DATA)) {
> + dev_err(&client->dev,
> + "OV7740: I2C-Adapter doesn't support SMBUS\n");
> + return -EIO;
> + }
> +
> + ov7740 = devm_kzalloc(&client->dev, sizeof(*ov7740), GFP_KERNEL);
> + if (!ov7740)
> + return -ENOMEM;
> +
> + ov7740->xvclk = devm_clk_get(&client->dev, "xvclk");
> + if (IS_ERR(ov7740->xvclk)) {
> + ret = PTR_ERR(ov7740->xvclk);
> + dev_err(&client->dev,
> + "OV7740: fail to get xvclk: %d\n", ret);
> + return ret;
> + }
> +
> + ret = ov7740_probe_dt(client, ov7740);
> + if (ret)
> + return ret;
> +
> + ret = clk_prepare_enable(ov7740->xvclk);
> + if (ret)
> + return ret;
> +
> + ov7740->regmap = devm_regmap_init_i2c(client, &ov7740_regmap_config);
> + if (IS_ERR(ov7740->regmap)) {
> + ret = PTR_ERR(ov7740->regmap);
> + dev_err(&client->dev, "Failed to allocate register map: %d\n",
> + ret);
> + goto error_regmap_init;
> + }
> +
> + sd = &ov7740->subdev;
> + client->flags |= I2C_CLIENT_SCCB;
> + v4l2_i2c_subdev_init(sd, client, &ov7740_subdev_ops);
> +
> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
> + sd->internal_ops = &ov7740_subdev_internal_ops;
> + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> +#endif
> +
> +#if defined(CONFIG_MEDIA_CONTROLLER)
> + ov7740->pad.flags = MEDIA_PAD_FL_SOURCE;
> + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
> + ret = media_entity_pads_init(&sd->entity, 1, &ov7740->pad);
> + if (ret)
> + goto error_regmap_init;
> +#endif
> +
> + ov7740_set_power(sd, 1);
> +
> + ret = ov7740_detect(ov7740);
> + if (ret)
> + goto error_detect;
> +
> + mutex_init(&ov7740->mutex);
> +
> + ret = ov7740_init_controls(ov7740);
> + if (ret)
> + goto error_init_controls;
> +
> + v4l_info(client, "chip found @ 0x%02x (%s)\n",
> + client->addr << 1, client->adapter->name);
> +
> + ov7740->fmt = &ov7740_formats[0];
> + ov7740->frmsize = &ov7740_framesizes[0];
> +
> + ov7740_get_default_format(sd, &ov7740->format);
> +
> + ret = v4l2_async_register_subdev(sd);
> + if (ret)
> + goto error_async_register;
> +
> + pm_runtime_get_noresume(&client->dev);
> + pm_runtime_set_active(&client->dev);
> + pm_runtime_enable(&client->dev);
> + pm_runtime_put(&client->dev);
> +
> + return 0;
> +
> +error_async_register:
> + v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
> +error_init_controls:
> + ov7740_free_controls(ov7740);
> + ov7740_set_power(sd, 0);
> +error_detect:
> + media_entity_cleanup(&ov7740->subdev.entity);
> +error_regmap_init:
> + clk_disable_unprepare(ov7740->xvclk);
> +
> + return ret;
> +}
> +
> +static int ov7740_remove(struct i2c_client *client)
> +{
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> +
> + clk_disable_unprepare(ov7740->xvclk);
> + mutex_destroy(&ov7740->mutex);
> + v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
> +#if defined(CONFIG_MEDIA_CONTROLLER)
> + media_entity_cleanup(&ov7740->subdev.entity);
> +#endif
> + v4l2_async_unregister_subdev(sd);
> + ov7740_free_controls(ov7740);
> +
> + pm_runtime_get_sync(&client->dev);
> + pm_runtime_disable(&client->dev);
> + pm_runtime_set_suspended(&client->dev);
> + pm_runtime_put_noidle(&client->dev);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused ov7740_runtime_suspend(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> +
> + clk_disable_unprepare(ov7740->xvclk);
> + ov7740_set_power(sd, 0);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused ov7740_runtime_resume(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
> +
> + ov7740_set_power(sd, 1);
> + return clk_prepare_enable(ov7740->xvclk);
> +}
> +
> +static const struct i2c_device_id ov7740_id[] = {
> + { "ov7740", 0 },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(i2c, ov7740_id);
> +
> +static const struct dev_pm_ops ov7740_pm_ops = {
> + SET_RUNTIME_PM_OPS(ov7740_runtime_suspend, ov7740_runtime_resume, NULL)
> +};
> +
> +static const struct of_device_id ov7740_of_match[] = {
> + {.compatible = "ovti,ov7740", },
> + { /* sentinel */ },
> +};
> +MODULE_DEVICE_TABLE(of, ov7740_of_match);
> +
> +
> +static struct i2c_driver ov7740_i2c_driver = {
> + .driver = {
> + .name = "ov7740",
> + .pm = &ov7740_pm_ops,
> + .of_match_table = of_match_ptr(ov7740_of_match),
> + },
> + .probe = ov7740_probe,
> + .remove = ov7740_remove,
> + .id_table = ov7740_id,
> +};
> +module_i2c_driver(ov7740_i2c_driver);
> +
> +MODULE_DESCRIPTION("The V4L2 driver for Omnivision 7740 sensor");
> +MODULE_AUTHOR("Songjun Wu <songjun.wu@atmel.com>");
> +MODULE_LICENSE("GPL v2");
>
On 2017/10/27 15:10, Hans Verkuil wrote:
> On 10/27/2017 05:30 AM, Wenyou Yang wrote:
>> From: Songjun Wu <songjun.wu@microchip.com>
>>
>> The ov7740 (color) image sensor is a high performance VGA CMOS
>> image snesor, which supports for output formats: RAW RGB and YUV
>> and image sizes: VGA, and QVGA, CIF and any size smaller.
> Two short remarks: please split off the bindings into a separate
> patch. And add a new entry to the MAINTAINERS file.
Thanks a lot.
Will be done in the next version.
>
> Regards,
>
> Hans
>
>> Signed-off-by: Songjun Wu <songjun.wu@microchip.com>
>> Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
>> ---
>>
>> .../devicetree/bindings/media/i2c/ov7740.txt | 43 +
>> drivers/media/i2c/Kconfig | 8 +
>> drivers/media/i2c/Makefile | 1 +
>> drivers/media/i2c/ov7740.c | 1220 ++++++++++++++++++++
>> 4 files changed, 1272 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/media/i2c/ov7740.txt
>> create mode 100644 drivers/media/i2c/ov7740.c
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ov7740.txt b/Documentation/devicetree/bindings/media/i2c/ov7740.txt
>> new file mode 100644
>> index 000000000000..b306e5aa97bf
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ov7740.txt
>> @@ -0,0 +1,43 @@
>> +* Omnivision OV7740 CMOS image sensor
>> +
>> +The Omnivision OV7740 image sensor supports multiple output image
>> +size, such as VGA, and QVGA, CIF and any size smaller. It also
>> +supports the RAW RGB and YUV output formats.
>> +
>> +Required Properties:
>> +- compatible: should be "ovti,ov7740"
>> +- clocks: reference to the xvclk input clock.
>> +- clock-names: should be "xvclk".
>> +
>> +Optional Properties:
>> +- reset-gpios: reference to the GPIO connected to the reset_b pin,
>> + if any. Active low with pull-ip resistor.
>> +- powerdown-gpios: reference to the GPIO connected to the pwdn pin,
>> + if any. Active high with pull-down resistor.
>> +
>> +The device node must contain one 'port' child node for its digital
>> +output video port, in accordance with the video interface bindings
>> +defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
>> +
>> +Example:
>> +
>> + i2c1: i2c@fc028000 {
>> + ov7740: camera@21 {
>> + compatible = "ovti,ov7740";
>> + reg = <0x21>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_sensor_power &pinctrl_sensor_reset>;
>> + clocks = <&isc>;
>> + clock-names = "xvclk";
>> + assigned-clocks = <&isc>;
>> + assigned-clock-rates = <24000000>;
>> + reset-gpios = <&pioA 43 GPIO_ACTIVE_LOW>;
>> + powerdown-gpios = <&pioA 44 GPIO_ACTIVE_HIGH>;
>> +
>> + port {
>> + ov7740_0: endpoint {
>> + remote-endpoint = <&isc_0>;
>> + };
>> + };
>> + };
>> + };
>> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
>> index 47113774a297..402ad0e4024c 100644
>> --- a/drivers/media/i2c/Kconfig
>> +++ b/drivers/media/i2c/Kconfig
>> @@ -657,6 +657,14 @@ config VIDEO_OV7670
>> OV7670 VGA camera. It currently only works with the M88ALP01
>> controller.
>>
>> +config VIDEO_OV7740
>> + tristate "OmniVision OV7740 sensor support"
>> + depends on I2C && VIDEO_V4L2
>> + depends on MEDIA_CAMERA_SUPPORT
>> + ---help---
>> + This is a Video4Linux2 sensor-level driver for the OmniVision
>> + OV7740 VGA camera sensor.
>> +
>> config VIDEO_OV9650
>> tristate "OmniVision OV9650/OV9652 sensor support"
>> depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
>> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
>> index c843c181dfb9..f94cb2a8ed91 100644
>> --- a/drivers/media/i2c/Makefile
>> +++ b/drivers/media/i2c/Makefile
>> @@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_OV5670) += ov5670.o
>> obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
>> obj-$(CONFIG_VIDEO_OV7640) += ov7640.o
>> obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
>> +obj-$(CONFIG_VIDEO_OV7740) += ov7740.o
>> obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
>> obj-$(CONFIG_VIDEO_OV13858) += ov13858.o
>> obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o
>> diff --git a/drivers/media/i2c/ov7740.c b/drivers/media/i2c/ov7740.c
>> new file mode 100644
>> index 000000000000..d68add05b46e
>> --- /dev/null
>> +++ b/drivers/media/i2c/ov7740.c
>> @@ -0,0 +1,1220 @@
>> +/*
>> + * Copyright (c) 2017 Microchip Corporation.
>> + *
>> + * This program is free software; you can redistribute it and/or
>> + * modify it under the terms of the GNU General Public License version
>> + * 2 as published by the Free Software Foundation.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + *
>> + */
>> +#include <linux/clk.h>
>> +#include <linux/delay.h>
>> +#include <linux/gpio.h>
>> +#include <linux/i2c.h>
>> +#include <linux/init.h>
>> +#include <linux/module.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/regmap.h>
>> +#include <media/v4l2-ctrls.h>
>> +#include <media/v4l2-event.h>
>> +#include <media/v4l2-image-sizes.h>
>> +#include <media/v4l2-subdev.h>
>> +
>> +#define REG_OUTSIZE_LSB 0x34
>> +
>> +/* OV7740 register tables */
>> +#define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */
>> +#define REG_BGAIN 0x01 /* blue gain */
>> +#define REG_RGAIN 0x02 /* red gain */
>> +#define REG_GGAIN 0x03 /* green gain */
>> +#define REG_REG04 0x04 /* analog setting, dont change*/
>> +#define REG_BAVG 0x05 /* b channel average */
>> +#define REG_GAVG 0x06 /* g channel average */
>> +#define REG_RAVG 0x07 /* r channel average */
>> +
>> +#define REG_REG0C 0x0C /* filp enable */
>> +#define REG0C_IMG_FLIP 0x80
>> +#define REG0C_IMG_MIRROR 0x40
>> +
>> +#define REG_REG0E 0x0E /* blc line */
>> +#define REG_HAEC 0x0F /* auto exposure cntrl */
>> +#define REG_AEC 0x10 /* auto exposure cntrl */
>> +
>> +#define REG_CLK 0x11 /* Clock control */
>> +#define REG_REG55 0x55 /* Clock PLL DIV/PreDiv */
>> +
>> +#define REG_REG12 0x12
>> +
>> +#define REG_REG13 0x13 /* auto/manual AGC, AEC, Write Balance*/
>> +#define REG13_AEC_EN 0x01
>> +#define REG13_AGC_EN 0x04
>> +
>> +#define REG_REG14 0x14
>> +#define REG_REG15 0x15
>> +#define REG15_GAIN_MSB 0x03
>> +
>> +#define REG_REG16 0x16
>> +
>> +#define REG_MIDH 0x1C /* manufacture id byte */
>> +#define REG_MIDL 0x1D /* manufacture id byre */
>> +#define REG_PIDH 0x0A /* Product ID MSB */
>> +#define REG_PIDL 0x0B /* Product ID LSB */
>> +
>> +#define REG_84 0x84 /* lots of stuff */
>> +#define REG_REG38 0x38 /* sub-addr */
>> +
>> +#define REG_AHSTART 0x17 /* Horiz start high bits */
>> +#define REG_AHSIZE 0x18
>> +#define REG_AVSTART 0x19 /* Vert start high bits */
>> +#define REG_AVSIZE 0x1A
>> +#define REG_PSHFT 0x1b /* Pixel delay after HREF */
>> +
>> +#define REG_HOUTSIZE 0x31
>> +#define REG_VOUTSIZE 0x32
>> +#define REG_HVSIZEOFF 0x33
>> +#define REG_REG34 0x34 /* DSP output size H/V LSB*/
>> +
>> +#define REG_ISP_CTRL00 0x80
>> +#define ISPCTRL00_AWB_EN 0x10
>> +#define ISPCTRL00_AWB_GAIN_EN 0x04
>> +
>> +#define REG_YGAIN 0xE2 /* ygain for contrast control */
>> +
>> +#define REG_YBRIGHT 0xE3
>> +#define REG_SGNSET 0xE4
>> +#define SGNSET_YBRIGHT_MASK 0x08
>> +
>> +#define REG_USAT 0xDD
>> +#define REG_VSAT 0xDE
>> +
>> +
>> +struct ov7740 {
>> + struct v4l2_subdev subdev;
>> +#if defined(CONFIG_MEDIA_CONTROLLER)
>> + struct media_pad pad;
>> +#endif
>> + struct v4l2_mbus_framefmt format;
>> + struct ov7740_pixfmt *fmt; /* Current format */
>> + struct ov7740_framesize *frmsize;
>> + struct regmap *regmap;
>> + struct clk *xvclk;
>> + struct v4l2_ctrl_handler ctrl_handler;
>> + struct {
>> + /* gain cluster */
>> + struct v4l2_ctrl *auto_gain;
>> + struct v4l2_ctrl *gain;
>> + };
>> + struct {
>> + struct v4l2_ctrl *auto_wb;
>> + struct v4l2_ctrl *blue_balance;
>> + struct v4l2_ctrl *red_balance;
>> + };
>> + struct {
>> + struct v4l2_ctrl *hflip;
>> + struct v4l2_ctrl *vflip;
>> + };
>> + struct {
>> + /* exposure cluster */
>> + struct v4l2_ctrl *auto_exposure;
>> + struct v4l2_ctrl *exposure;
>> + };
>> + struct {
>> + /* saturation/hue cluster */
>> + struct v4l2_ctrl *saturation;
>> + struct v4l2_ctrl *hue;
>> + };
>> + struct v4l2_ctrl *brightness;
>> + struct v4l2_ctrl *contrast;
>> +
>> + struct mutex mutex; /* To serialize asynchronus callbacks */
>> + bool streaming; /* Streaming on/off */
>> +
>> + struct gpio_desc *resetb_gpio;
>> + struct gpio_desc *pwdn_gpio;
>> +};
>> +
>> +struct ov7740_pixfmt {
>> + u32 mbus_code;
>> + enum v4l2_colorspace colorspace;
>> + const struct reg_sequence *regs;
>> + u32 reg_num;
>> +};
>> +
>> +struct ov7740_framesize {
>> + u16 width;
>> + u16 height;
>> + const struct reg_sequence *regs;
>> + u32 reg_num;
>> +};
>> +
>> +static const struct reg_sequence ov7740_vga[] = {
>> + {0x55, 0x40},
>> + {0x11, 0x02},
>> +
>> + {0xd5, 0x10},
>> + {0x0c, 0x12},
>> + {0x0d, 0x34},
>> + {0x17, 0x25},
>> + {0x18, 0xa0},
>> + {0x19, 0x03},
>> + {0x1a, 0xf0},
>> + {0x1b, 0x89},
>> + {0x22, 0x03},
>> + {0x29, 0x18},
>> + {0x2b, 0xf8},
>> + {0x2c, 0x01},
>> + {REG_HOUTSIZE, 0xa0},
>> + {REG_VOUTSIZE, 0xf0},
>> + {0x33, 0xc4},
>> + {REG_OUTSIZE_LSB, 0x0},
>> + {0x35, 0x05},
>> + //{0x36, 0x3f},
>> + {0x04, 0x60},
>> + {0x27, 0x80},
>> + {0x3d, 0x0f},
>> + {0x3e, 0x80},
>> + {0x3f, 0x40},
>> + {0x40, 0x7f},
>> + {0x41, 0x6a},
>> + {0x42, 0x29},
>> + {0x44, 0x22},
>> + {0x45, 0x41},
>> + {0x47, 0x02},
>> + {0x49, 0x64},
>> + {0x4a, 0xa1},
>> + {0x4b, 0x40},
>> + {0x4c, 0x1a},
>> + {0x4d, 0x50},
>> + {0x4e, 0x13},
>> + {0x64, 0x00},
>> + {0x67, 0x88},
>> + {0x68, 0x1a},
>> +
>> + {0x14, 0x28},
>> + {0x24, 0x3c},
>> + {0x25, 0x30},
>> + {0x26, 0x72},
>> + {0x50, 0x97},
>> + {0x51, 0x1f},
>> + {0x52, 0x00},
>> + {0x53, 0x00},
>> + {0x20, 0x00},
>> + {0x21, 0xcf},
>> + {0x50, 0x4b},
>> + {0x38, 0x14},
>> + {0xe9, 0x00},
>> + {0x56, 0x55},
>> + {0x57, 0xff},
>> + {0x58, 0xff},
>> + {0x59, 0xff},
>> + {0x5f, 0x04},
>> + {0xec, 0x00},
>> + {0x13, 0xff},
>> +
>> + //{0x80,0x7f},
>> + {0x81, 0x3f},
>> + {0x82, 0x32},
>> + //{0x83, 0x01},
>> + {0x38, 0x11},
>> + {0x84, 0x70},
>> + {0x85, 0x00},
>> + {0x86, 0x03},
>> + {0x87, 0x01},
>> + {0x88, 0x05},
>> + {0x89, 0x30},
>> + {0x8d, 0x30},
>> + {0x8f, 0x85},
>> + {0x93, 0x30},
>> + {0x95, 0x85},
>> + {0x99, 0x30},
>> + {0x9b, 0x85},
>> +
>> + {0x9c, 0x08},
>> + {0x9d, 0x12},
>> + {0x9e, 0x23},
>> + {0x9f, 0x45},
>> + {0xa0, 0x55},
>> + {0xa1, 0x64},
>> + {0xa2, 0x72},
>> + {0xa3, 0x7f},
>> + {0xa4, 0x8b},
>> + {0xa5, 0x95},
>> + {0xa6, 0xa7},
>> + {0xa7, 0xb5},
>> + {0xa8, 0xcb},
>> + {0xa9, 0xdd},
>> + {0xaa, 0xec},
>> + {0xab, 0x1a},
>> +
>> + {0xce, 0x78},
>> + {0xcf, 0x6e},
>> + {0xd0, 0x0a},
>> + {0xd1, 0x0c},
>> + {0xd2, 0x84},
>> + {0xd3, 0x90},
>> + {0xd4, 0x1e},
>> +
>> + {0x5a, 0x24},
>> + {0x5b, 0x1f},
>> + {0x5c, 0x88},
>> + {0x5d, 0x60},
>> +
>> + {0xac, 0x6e},
>> + {0xbe, 0xff},
>> + {0xbf, 0x00},
>> +
>> + {0x0f, 0x1d},
>> + {0x0f, 0x1f},
>> +};
>> +
>> +static struct ov7740_framesize ov7740_framesizes[] = {
>> + {
>> + .width = VGA_WIDTH,
>> + .height = VGA_HEIGHT,
>> + .regs = ov7740_vga,
>> + .reg_num = ARRAY_SIZE(ov7740_vga),
>> + },
>> +};
>> +
>> +#ifdef CONFIG_VIDEO_ADV_DEBUG
>> +static int ov7740_get_register(struct v4l2_subdev *sd,
>> + struct v4l2_dbg_register *reg)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> + struct regmap *regmap = ov7740->regmap;
>> + unsigned int val = 0;
>> + int ret;
>> +
>> + ret = regmap_read(regmap, reg->reg & 0xff, &val);
>> + reg->val = val;
>> + reg->size = 1;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_set_register(struct v4l2_subdev *sd,
>> + const struct v4l2_dbg_register *reg)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> + struct regmap *regmap = ov7740->regmap;
>> +
>> + regmap_write(regmap, reg->reg & 0xff, reg->val & 0xff);
>> +
>> + return 0;
>> +}
>> +#endif
>> +
>> +static int ov7740_set_power(struct v4l2_subdev *sd, int on)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> +
>> + if (ov7740->pwdn_gpio)
>> + gpiod_direction_output(ov7740->pwdn_gpio, !on);
>> + if (on && ov7740->resetb_gpio) {
>> + gpiod_set_value(ov7740->resetb_gpio, 1);
>> + usleep_range(500, 1000);
>> + gpiod_set_value(ov7740->resetb_gpio, 0);
>> + usleep_range(3000, 5000);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static struct v4l2_subdev_core_ops ov7740_subdev_core_ops = {
>> + .log_status = v4l2_ctrl_subdev_log_status,
>> +#ifdef CONFIG_VIDEO_ADV_DEBUG
>> + .g_register = ov7740_get_register,
>> + .s_register = ov7740_set_register,
>> +#endif
>> + .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
>> + .unsubscribe_event = v4l2_event_subdev_unsubscribe,
>> +};
>> +
>> +static int ov7740_set_white_balance(struct ov7740 *ov7740, int awb)
>> +{
>> + struct regmap *regmap = ov7740->regmap;
>> + unsigned int value;
>> + int ret;
>> +
>> + ret = regmap_read(regmap, REG_ISP_CTRL00, &value);
>> + if (!ret) {
>> + if (awb)
>> + value |= (ISPCTRL00_AWB_EN | ISPCTRL00_AWB_GAIN_EN);
>> + else
>> + value &= ~(ISPCTRL00_AWB_EN | ISPCTRL00_AWB_GAIN_EN);
>> + ret = regmap_write(regmap, REG_ISP_CTRL00, value);
>> + if (ret)
>> + return ret;
>> + }
>> +
>> + if (!awb) {
>> + ret = regmap_write(regmap, REG_BGAIN,
>> + ov7740->blue_balance->val);
>> + if (ret)
>> + return ret;
>> +
>> + ret = regmap_write(regmap, REG_RGAIN, ov7740->red_balance->val);
>> + if (ret)
>> + return ret;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_set_saturation(struct regmap *regmap, int value)
>> +{
>> + int ret;
>> +
>> + ret = regmap_write(regmap, REG_USAT, (unsigned char)value);
>> + ret = regmap_write(regmap, REG_VSAT, (unsigned char)value);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov7740_set_gain(struct regmap *regmap, int value)
>> +{
>> + int ret;
>> +
>> + ret = regmap_write(regmap, REG_GAIN, value & 0xff);
>> + if (ret)
>> + return ret;
>> +
>> + ret = regmap_update_bits(regmap, REG_REG15,
>> + REG15_GAIN_MSB, (value >> 8) & 0x3);
>> + if (!ret)
>> + ret = regmap_update_bits(regmap, REG_REG13, REG13_AGC_EN, 0);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov7740_set_autogain(struct regmap *regmap, int value)
>> +{
>> + unsigned int reg;
>> + int ret;
>> +
>> + ret = regmap_read(regmap, REG_REG13, ®);
>> + if (ret)
>> + return ret;
>> + if (value)
>> + reg |= REG13_AGC_EN;
>> + else
>> + reg &= ~REG13_AGC_EN;
>> + return regmap_write(regmap, REG_REG13, reg);
>> +}
>> +
>> +static int ov7740_set_brightness(struct regmap *regmap, int value)
>> +{
>> + /* Turn off AEC/AGC */
>> + regmap_update_bits(regmap, REG_REG13, REG13_AEC_EN, 0);
>> + regmap_update_bits(regmap, REG_REG13, REG13_AGC_EN, 0);
>> +
>> + if (value >= 0) {
>> + regmap_write(regmap, REG_YBRIGHT, (unsigned char)value);
>> + regmap_update_bits(regmap, REG_SGNSET, SGNSET_YBRIGHT_MASK, 0);
>> + } else{
>> + regmap_write(regmap, REG_YBRIGHT, (unsigned char)(-value));
>> + regmap_update_bits(regmap, REG_SGNSET, SGNSET_YBRIGHT_MASK, 1);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_set_contrast(struct regmap *regmap, int value)
>> +{
>> + return regmap_write(regmap, REG_YGAIN, (unsigned char)value);
>> +}
>> +
>> +static int ov7740_get_gain(struct ov7740 *ov7740, struct v4l2_ctrl *ctrl)
>> +{
>> + struct regmap *regmap = ov7740->regmap;
>> + unsigned int value0, value1;
>> + int ret;
>> +
>> + if (!ctrl->val)
>> + return 0;
>> +
>> + ret = regmap_read(regmap, REG_GAIN, &value0);
>> + if (ret)
>> + return ret;
>> + ret = regmap_read(regmap, REG_REG15, &value1);
>> + if (ret)
>> + return ret;
>> +
>> + ov7740->gain->val = (value1 << 8) | (value0 & 0xff);
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_set_exp(struct regmap *regmap, int value)
>> +{
>> + int ret;
>> +
>> + /* Turn off AEC/AGC */
>> + ret = regmap_update_bits(regmap, REG_REG13,
>> + REG13_AEC_EN | REG13_AGC_EN, 0);
>> + if (ret)
>> + return ret;
>> +
>> + ret = regmap_write(regmap, REG_AEC, (unsigned char)value);
>> + if (ret)
>> + return ret;
>> +
>> + return regmap_write(regmap, REG_HAEC, (unsigned char)(value >> 8));
>> +}
>> +
>> +static int ov7740_set_autoexp(struct regmap *regmap,
>> + enum v4l2_exposure_auto_type value)
>> +{
>> + unsigned int reg;
>> + int ret;
>> +
>> + ret = regmap_read(regmap, REG_REG13, ®);
>> + if (!ret) {
>> + if (value == V4L2_EXPOSURE_AUTO)
>> + reg |= (REG13_AEC_EN | REG13_AGC_EN);
>> + else
>> + reg &= ~(REG13_AEC_EN | REG13_AGC_EN);
>> + ret = regmap_write(regmap, REG_REG13, reg);
>> + }
>> +
>> + return ret;
>> +}
>> +
>> +
>> +static int ov7740_get_volatile_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> + struct ov7740 *ov7740 = container_of(ctrl->handler,
>> + struct ov7740, ctrl_handler);
>> + int ret;
>> +
>> + switch (ctrl->id) {
>> + case V4L2_CID_AUTOGAIN:
>> + ret = ov7740_get_gain(ov7740, ctrl);
>> + break;
>> + default:
>> + ret = -EINVAL;
>> + break;
>> + }
>> + return ret;
>> +}
>> +
>> +static int ov7740_set_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> + struct ov7740 *ov7740 = container_of(ctrl->handler,
>> + struct ov7740, ctrl_handler);
>> + struct i2c_client *client = v4l2_get_subdevdata(&ov7740->subdev);
>> + struct regmap *regmap = ov7740->regmap;
>> + int ret;
>> + u8 val;
>> +
>> + if (pm_runtime_get_if_in_use(&client->dev) <= 0)
>> + return 0;
>> +
>> + switch (ctrl->id) {
>> + case V4L2_CID_AUTO_WHITE_BALANCE:
>> + ret = ov7740_set_white_balance(ov7740, ctrl->val);
>> + break;
>> + case V4L2_CID_SATURATION:
>> + ret = ov7740_set_saturation(regmap, ctrl->val);
>> + break;
>> + case V4L2_CID_BRIGHTNESS:
>> + ret = ov7740_set_brightness(regmap, ctrl->val);
>> + break;
>> + case V4L2_CID_CONTRAST:
>> + ret = ov7740_set_contrast(regmap, ctrl->val);
>> + break;
>> + case V4L2_CID_VFLIP:
>> + ret = regmap_update_bits(regmap, REG_REG0C,
>> + REG0C_IMG_FLIP, val);
>> + break;
>> + case V4L2_CID_HFLIP:
>> + val = ctrl->val ? REG0C_IMG_MIRROR : 0x00;
>> + ret = regmap_update_bits(regmap, REG_REG0C,
>> + REG0C_IMG_MIRROR, val);
>> + break;
>> + case V4L2_CID_AUTOGAIN:
>> + if (!ctrl->val)
>> + return ov7740_set_gain(regmap, ov7740->gain->val);
>> +
>> + ret = ov7740_set_autogain(regmap, ctrl->val);
>> + break;
>> +
>> + case V4L2_CID_EXPOSURE_AUTO:
>> + if (ctrl->val == V4L2_EXPOSURE_MANUAL)
>> + return ov7740_set_exp(regmap, ov7740->exposure->val);
>> +
>> + ret = ov7740_set_autoexp(regmap, ctrl->val);
>> + break;
>> + default:
>> + ret = -EINVAL;
>> + break;
>> + }
>> +
>> + pm_runtime_put(&client->dev);
>> +
>> + return ret;
>> +}
>> +
>> +static const struct v4l2_ctrl_ops ov7740_ctrl_ops = {
>> + .g_volatile_ctrl = ov7740_get_volatile_ctrl,
>> + .s_ctrl = ov7740_set_ctrl,
>> +};
>> +
>> +static int ov7740_start_streaming(struct ov7740 *ov7740)
>> +{
>> + int ret;
>> +
>> + /* Apply customized values from user */
>> + ret = __v4l2_ctrl_handler_setup(ov7740->subdev.ctrl_handler);
>> + if (ret)
>> + return ret;
>> +
>> + return 0;
>> +}
>> +static int ov7740_set_stream(struct v4l2_subdev *sd, int enable)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> + struct i2c_client *client = v4l2_get_subdevdata(sd);
>> + int ret = 0;
>> +
>> + mutex_lock(&ov7740->mutex);
>> + if (ov7740->streaming == enable) {
>> + mutex_unlock(&ov7740->mutex);
>> + return 0;
>> + }
>> +
>> + if (enable) {
>> + ret = pm_runtime_get_sync(&client->dev);
>> + if (ret < 0) {
>> + pm_runtime_put_noidle(&client->dev);
>> + goto err_unlock;
>> + }
>> +
>> + ret = ov7740_start_streaming(ov7740);
>> + if (ret)
>> + goto err_rpm_put;
>> + } else {
>> + pm_runtime_put(&client->dev);
>> + }
>> +
>> + ov7740->streaming = enable;
>> +
>> + mutex_unlock(&ov7740->mutex);
>> + return ret;
>> +
>> +err_rpm_put:
>> + pm_runtime_put(&client->dev);
>> +err_unlock:
>> + mutex_unlock(&ov7740->mutex);
>> + return ret;
>> +}
>> +
>> +static int ov7740_get_parm(struct v4l2_subdev *sd,
>> + struct v4l2_streamparm *parms)
>> +{
>> + struct v4l2_captureparm *cp = &parms->parm.capture;
>> + struct v4l2_fract *tpf = &cp->timeperframe;
>> +
>> + if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
>> + return -EINVAL;
>> +
>> + memset(cp, 0, sizeof(struct v4l2_captureparm));
>> + cp->capability = V4L2_CAP_TIMEPERFRAME;
>> +
>> + tpf->numerator = 1;
>> + tpf->denominator = 60;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_set_parm(struct v4l2_subdev *sd,
>> + struct v4l2_streamparm *parms)
>> +{
>> + struct v4l2_captureparm *cp = &parms->parm.capture;
>> + struct v4l2_fract *tpf = &cp->timeperframe;
>> +
>> + if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
>> + return -EINVAL;
>> + if (cp->extendedmode != 0)
>> + return -EINVAL;
>> +
>> + cp->capability = V4L2_CAP_TIMEPERFRAME;
>> +
>> + tpf->numerator = 1;
>> + tpf->denominator = 60;
>> +
>> + return 0;
>> +}
>> +
>> +static struct v4l2_subdev_video_ops ov7740_subdev_video_ops = {
>> + .s_stream = ov7740_set_stream,
>> + .s_parm = ov7740_set_parm,
>> + .g_parm = ov7740_get_parm,
>> +};
>> +
>> +static const struct reg_sequence ov7740_format_yuyv[] = {
>> + {0x12, 0x00},
>> + {0x36, 0x3f},
>> + {0x80, 0x7f},
>> + {0x83, 0x01},
>> +};
>> +
>> +static const struct reg_sequence ov7740_format_bggr8[] = {
>> + {0x36, 0x2f},
>> + {0x80, 0x01},
>> + {0x83, 0x04},
>> +};
>> +
>> +static struct ov7740_pixfmt ov7740_formats[] = {
>> + {
>> + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
>> + .colorspace = V4L2_COLORSPACE_SRGB,
>> + .regs = ov7740_format_yuyv,
>> + .reg_num = ARRAY_SIZE(ov7740_format_yuyv),
>> + },
>> + {
>> + .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
>> + .colorspace = V4L2_COLORSPACE_SRGB,
>> + .regs = ov7740_format_bggr8,
>> + .reg_num = ARRAY_SIZE(ov7740_format_bggr8),
>> + }
>> +};
>> +#define N_OV7740_FMTS ARRAY_SIZE(ov7740_formats)
>> +
>> +static int ov7740_enum_mbus_code(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_mbus_code_enum *code)
>> +{
>> + if (code->pad || code->index >= N_OV7740_FMTS)
>> + return -EINVAL;
>> +
>> + code->code = ov7740_formats[code->index].mbus_code;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_enum_frame_interval(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_frame_interval_enum *fie)
>> +{
>> + if (fie->pad)
>> + return -EINVAL;
>> +
>> + if (fie->index >= 1)
>> + return -EINVAL;
>> +
>> + if ((fie->width != VGA_WIDTH) || (fie->height != VGA_HEIGHT))
>> + return -EINVAL;
>> +
>> + fie->interval.numerator = 1;
>> + fie->interval.denominator = 60;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_enum_frame_size(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_frame_size_enum *fse)
>> +{
>> + if (fse->pad)
>> + return -EINVAL;
>> +
>> + if (fse->index > 0)
>> + return -EINVAL;
>> +
>> + fse->min_width = fse->max_width = VGA_WIDTH;
>> + fse->min_height = fse->max_height = VGA_HEIGHT;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_try_fmt_internal(struct v4l2_subdev *sd,
>> + struct v4l2_mbus_framefmt *fmt,
>> + struct ov7740_pixfmt **ret_fmt,
>> + struct ov7740_framesize **ret_frmsize)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> + struct ov7740_framesize *fsize = &ov7740_framesizes[0];
>> + int index, i;
>> +
>> + for (index = 0; index < N_OV7740_FMTS; index++) {
>> + if (ov7740_formats[index].mbus_code == fmt->code)
>> + break;
>> + }
>> + if (index >= N_OV7740_FMTS) {
>> + /* default to first format */
>> + index = 0;
>> + fmt->code = ov7740_formats[0].mbus_code;
>> + }
>> + if (ret_fmt != NULL)
>> + *ret_fmt = ov7740_formats + index;
>> +
>> + for (i = 0; i < ARRAY_SIZE(ov7740_framesizes); i++) {
>> + if ((fsize->width >= fmt->width) &&
>> + (fsize->height >= fmt->height)) {
>> + fmt->width = fsize->width;
>> + fmt->height = fsize->height;
>> + break;
>> + }
>> +
>> + fsize++;
>> + }
>> +
>> + if (ret_frmsize != NULL)
>> + *ret_frmsize = fsize;
>> +
>> + fmt->field = V4L2_FIELD_NONE;
>> + fmt->colorspace = ov7740_formats[index].colorspace;
>> +
>> + ov7740->format = *fmt;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_set_fmt(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_format *format)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> + struct ov7740_pixfmt *ovfmt;
>> + struct ov7740_framesize *fsize;
>> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
>> + struct v4l2_mbus_framefmt *mbus_fmt;
>> +#endif
>> + int ret;
>> +
>> + mutex_lock(&ov7740->mutex);
>> + if (format->pad) {
>> + ret = -EINVAL;
>> + goto error;
>> + }
>> +
>> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
>> + ret = ov7740_try_fmt_internal(sd, &format->format, NULL, NULL);
>> + if (ret)
>> + goto error;
>> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
>> + mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
>> + *mbus_fmt = format->format;
>> +
>> + mutex_unlock(&ov7740->mutex);
>> + return 0;
>> +#else
>> + ret = -ENOTTY;
>> + goto error;
>> +#endif
>> + }
>> +
>> + ret = ov7740_try_fmt_internal(sd, &format->format, &ovfmt, &fsize);
>> + if (ret)
>> + goto error;
>> +
>> + if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
>> + regmap_multi_reg_write(ov7740->regmap,
>> + ovfmt->regs, ovfmt->reg_num);
>> +
>> + regmap_multi_reg_write(ov7740->regmap,
>> + fsize->regs, fsize->reg_num);
>> + }
>> +
>> + ov7740->fmt = ovfmt;
>> +
>> + mutex_unlock(&ov7740->mutex);
>> + return 0;
>> +
>> +error:
>> + mutex_unlock(&ov7740->mutex);
>> + return ret;
>> +}
>> +
>> +static int ov7740_get_fmt(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_format *format)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
>> + struct v4l2_mbus_framefmt *mbus_fmt;
>> +#endif
>> + int ret = 0;
>> +
>> + mutex_lock(&ov7740->mutex);
>> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
>> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
>> + mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
>> + format->format = *mbus_fmt;
>> + ret = 0;
>> +#else
>> + ret = -ENOTTY;
>> +#endif
>> + } else {
>> + format->format = ov7740->format;
>> + }
>> + mutex_unlock(&ov7740->mutex);
>> +
>> + return ret;
>> +}
>> +
>> +static const struct v4l2_subdev_pad_ops ov7740_subdev_pad_ops = {
>> + .enum_frame_interval = ov7740_enum_frame_interval,
>> + .enum_frame_size = ov7740_enum_frame_size,
>> + .enum_mbus_code = ov7740_enum_mbus_code,
>> + .get_fmt = ov7740_get_fmt,
>> + .set_fmt = ov7740_set_fmt,
>> +};
>> +
>> +static struct v4l2_subdev_ops ov7740_subdev_ops = {
>> + .core = &ov7740_subdev_core_ops,
>> + .video = &ov7740_subdev_video_ops,
>> + .pad = &ov7740_subdev_pad_ops,
>> +};
>> +
>> +static void ov7740_get_default_format(struct v4l2_subdev *sd,
>> + struct v4l2_mbus_framefmt *format)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> +
>> + format->width = ov7740->frmsize->width;
>> + format->height = ov7740->frmsize->height;
>> + format->colorspace = ov7740->fmt->colorspace;
>> + format->code = ov7740->fmt->mbus_code;
>> + format->field = V4L2_FIELD_NONE;
>> +}
>> +
>> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
>> +static int ov7740_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
>> +{
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> + struct v4l2_mbus_framefmt *format =
>> + v4l2_subdev_get_try_format(sd, fh->pad, 0);
>> +
>> + mutex_lock(&ov7740->mutex);
>> + ov7740_get_default_format(sd, format);
>> + mutex_unlock(&ov7740->mutex);
>> +
>> + return 0;
>> +}
>> +
>> +static const struct v4l2_subdev_internal_ops ov7740_subdev_internal_ops = {
>> + .open = ov7740_open,
>> +};
>> +#endif
>> +
>> +static int ov7740_probe_dt(struct i2c_client *client,
>> + struct ov7740 *ov7740)
>> +{
>> + ov7740->resetb_gpio = devm_gpiod_get_optional(&client->dev, "reset",
>> + GPIOD_OUT_LOW);
>> + if (IS_ERR(ov7740->resetb_gpio)) {
>> + dev_info(&client->dev, "can't get %s GPIO\n", "reset");
>> + return PTR_ERR(ov7740->resetb_gpio);
>> + }
>> +
>> + ov7740->pwdn_gpio = devm_gpiod_get_optional(&client->dev, "powerdown",
>> + GPIOD_OUT_HIGH);
>> + if (IS_ERR(ov7740->pwdn_gpio)) {
>> + dev_info(&client->dev, "can't get %s GPIO\n", "powerdown");
>> + return PTR_ERR(ov7740->pwdn_gpio);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_detect(struct ov7740 *ov7740)
>> +{
>> + struct regmap *regmap = ov7740->regmap;
>> + unsigned int midh, midl, pidh, pidl;
>> + int ret;
>> +
>> + ret = regmap_read(regmap, REG_MIDH, &midh);
>> + if (ret)
>> + return ret;
>> + if (midh != 0x7f)
>> + return -ENODEV;
>> +
>> + ret = regmap_read(regmap, REG_MIDL, &midl);
>> + if (ret)
>> + return ret;
>> + if (midl != 0xa2)
>> + return -ENODEV;
>> +
>> + ret = regmap_read(regmap, REG_PIDH, &pidh);
>> + if (ret)
>> + return ret;
>> + if (pidh != 0x77)
>> + return -ENODEV;
>> +
>> + ret = regmap_read(regmap, REG_PIDL, &pidl);
>> + if (ret)
>> + return ret;
>> + if ((pidl != 0x40) && (pidl != 0x41) && (pidl != 0x42))
>> + return -ENODEV;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov7740_init_controls(struct ov7740 *ov7740)
>> +{
>> + struct i2c_client *client = v4l2_get_subdevdata(&ov7740->subdev);
>> + struct v4l2_ctrl_handler *ctrl_hdlr = &ov7740->ctrl_handler;
>> + int ret;
>> +
>> + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 2);
>> + if (ret < 0)
>> + return ret;
>> +
>> + ctrl_hdlr->lock = &ov7740->mutex;
>> + ov7740->auto_wb = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_AUTO_WHITE_BALANCE,
>> + 0, 1, 1, 1);
>> + ov7740->blue_balance = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_BLUE_BALANCE,
>> + 0, 0xff, 1, 0x80);
>> + ov7740->red_balance = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_RED_BALANCE,
>> + 0, 0xff, 1, 0x80);
>> +
>> + ov7740->brightness = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_BRIGHTNESS,
>> + -255, 255, 1, 0);
>> + ov7740->contrast = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_CONTRAST,
>> + 0, 127, 1, 0x20);
>> + ov7740->saturation = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_SATURATION, 0, 256, 1, 0x80);
>> + ov7740->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_HFLIP, 0, 1, 1, 0);
>> + ov7740->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_VFLIP, 0, 1, 1, 0);
>> + ov7740->gain = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_GAIN, 0, 1023, 1, 500);
>> + ov7740->auto_gain = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
>> + ov7740->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
>> + V4L2_CID_EXPOSURE, 0, 65535, 1, 500);
>> + ov7740->auto_exposure = v4l2_ctrl_new_std_menu(ctrl_hdlr,
>> + &ov7740_ctrl_ops,
>> + V4L2_CID_EXPOSURE_AUTO,
>> + V4L2_EXPOSURE_MANUAL, 0,
>> + V4L2_EXPOSURE_AUTO);
>> +
>> + ov7740->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
>> + ov7740->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
>> +
>> + v4l2_ctrl_auto_cluster(3, &ov7740->auto_wb, 0, false);
>> + v4l2_ctrl_auto_cluster(2, &ov7740->auto_gain, 0, true);
>> + v4l2_ctrl_auto_cluster(2, &ov7740->auto_exposure,
>> + V4L2_EXPOSURE_MANUAL, false);
>> + v4l2_ctrl_cluster(2, &ov7740->hflip);
>> +
>> + ret = v4l2_ctrl_handler_setup(ctrl_hdlr);
>> + if (ret) {
>> + dev_err(&client->dev, "%s control init failed (%d)\n",
>> + __func__, ret);
>> + goto error;
>> + }
>> +
>> + ov7740->subdev.ctrl_handler = ctrl_hdlr;
>> + return 0;
>> +
>> +error:
>> + v4l2_ctrl_handler_free(ctrl_hdlr);
>> + mutex_destroy(&ov7740->mutex);
>> + return ret;
>> +}
>> +
>> +static void ov7740_free_controls(struct ov7740 *ov7740)
>> +{
>> + v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
>> + mutex_destroy(&ov7740->mutex);
>> +}
>> +
>> +#define OV7740_MAX_REGISTER 0xff
>> +static const struct regmap_config ov7740_regmap_config = {
>> + .reg_bits = 8,
>> + .val_bits = 8,
>> + .max_register = OV7740_MAX_REGISTER,
>> +};
>> +
>> +static int ov7740_probe(struct i2c_client *client,
>> + const struct i2c_device_id *id)
>> +{
>> + struct ov7740 *ov7740;
>> + struct v4l2_subdev *sd;
>> + int ret;
>> +
>> + if (!i2c_check_functionality(client->adapter,
>> + I2C_FUNC_SMBUS_BYTE_DATA)) {
>> + dev_err(&client->dev,
>> + "OV7740: I2C-Adapter doesn't support SMBUS\n");
>> + return -EIO;
>> + }
>> +
>> + ov7740 = devm_kzalloc(&client->dev, sizeof(*ov7740), GFP_KERNEL);
>> + if (!ov7740)
>> + return -ENOMEM;
>> +
>> + ov7740->xvclk = devm_clk_get(&client->dev, "xvclk");
>> + if (IS_ERR(ov7740->xvclk)) {
>> + ret = PTR_ERR(ov7740->xvclk);
>> + dev_err(&client->dev,
>> + "OV7740: fail to get xvclk: %d\n", ret);
>> + return ret;
>> + }
>> +
>> + ret = ov7740_probe_dt(client, ov7740);
>> + if (ret)
>> + return ret;
>> +
>> + ret = clk_prepare_enable(ov7740->xvclk);
>> + if (ret)
>> + return ret;
>> +
>> + ov7740->regmap = devm_regmap_init_i2c(client, &ov7740_regmap_config);
>> + if (IS_ERR(ov7740->regmap)) {
>> + ret = PTR_ERR(ov7740->regmap);
>> + dev_err(&client->dev, "Failed to allocate register map: %d\n",
>> + ret);
>> + goto error_regmap_init;
>> + }
>> +
>> + sd = &ov7740->subdev;
>> + client->flags |= I2C_CLIENT_SCCB;
>> + v4l2_i2c_subdev_init(sd, client, &ov7740_subdev_ops);
>> +
>> +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
>> + sd->internal_ops = &ov7740_subdev_internal_ops;
>> + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
>> +#endif
>> +
>> +#if defined(CONFIG_MEDIA_CONTROLLER)
>> + ov7740->pad.flags = MEDIA_PAD_FL_SOURCE;
>> + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
>> + ret = media_entity_pads_init(&sd->entity, 1, &ov7740->pad);
>> + if (ret)
>> + goto error_regmap_init;
>> +#endif
>> +
>> + ov7740_set_power(sd, 1);
>> +
>> + ret = ov7740_detect(ov7740);
>> + if (ret)
>> + goto error_detect;
>> +
>> + mutex_init(&ov7740->mutex);
>> +
>> + ret = ov7740_init_controls(ov7740);
>> + if (ret)
>> + goto error_init_controls;
>> +
>> + v4l_info(client, "chip found @ 0x%02x (%s)\n",
>> + client->addr << 1, client->adapter->name);
>> +
>> + ov7740->fmt = &ov7740_formats[0];
>> + ov7740->frmsize = &ov7740_framesizes[0];
>> +
>> + ov7740_get_default_format(sd, &ov7740->format);
>> +
>> + ret = v4l2_async_register_subdev(sd);
>> + if (ret)
>> + goto error_async_register;
>> +
>> + pm_runtime_get_noresume(&client->dev);
>> + pm_runtime_set_active(&client->dev);
>> + pm_runtime_enable(&client->dev);
>> + pm_runtime_put(&client->dev);
>> +
>> + return 0;
>> +
>> +error_async_register:
>> + v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
>> +error_init_controls:
>> + ov7740_free_controls(ov7740);
>> + ov7740_set_power(sd, 0);
>> +error_detect:
>> + media_entity_cleanup(&ov7740->subdev.entity);
>> +error_regmap_init:
>> + clk_disable_unprepare(ov7740->xvclk);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov7740_remove(struct i2c_client *client)
>> +{
>> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> +
>> + clk_disable_unprepare(ov7740->xvclk);
>> + mutex_destroy(&ov7740->mutex);
>> + v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
>> +#if defined(CONFIG_MEDIA_CONTROLLER)
>> + media_entity_cleanup(&ov7740->subdev.entity);
>> +#endif
>> + v4l2_async_unregister_subdev(sd);
>> + ov7740_free_controls(ov7740);
>> +
>> + pm_runtime_get_sync(&client->dev);
>> + pm_runtime_disable(&client->dev);
>> + pm_runtime_set_suspended(&client->dev);
>> + pm_runtime_put_noidle(&client->dev);
>> +
>> + return 0;
>> +}
>> +
>> +static int __maybe_unused ov7740_runtime_suspend(struct device *dev)
>> +{
>> + struct i2c_client *client = to_i2c_client(dev);
>> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> +
>> + clk_disable_unprepare(ov7740->xvclk);
>> + ov7740_set_power(sd, 0);
>> +
>> + return 0;
>> +}
>> +
>> +static int __maybe_unused ov7740_runtime_resume(struct device *dev)
>> +{
>> + struct i2c_client *client = to_i2c_client(dev);
>> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
>> + struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
>> +
>> + ov7740_set_power(sd, 1);
>> + return clk_prepare_enable(ov7740->xvclk);
>> +}
>> +
>> +static const struct i2c_device_id ov7740_id[] = {
>> + { "ov7740", 0 },
>> + { /* sentinel */ }
>> +};
>> +MODULE_DEVICE_TABLE(i2c, ov7740_id);
>> +
>> +static const struct dev_pm_ops ov7740_pm_ops = {
>> + SET_RUNTIME_PM_OPS(ov7740_runtime_suspend, ov7740_runtime_resume, NULL)
>> +};
>> +
>> +static const struct of_device_id ov7740_of_match[] = {
>> + {.compatible = "ovti,ov7740", },
>> + { /* sentinel */ },
>> +};
>> +MODULE_DEVICE_TABLE(of, ov7740_of_match);
>> +
>> +
>> +static struct i2c_driver ov7740_i2c_driver = {
>> + .driver = {
>> + .name = "ov7740",
>> + .pm = &ov7740_pm_ops,
>> + .of_match_table = of_match_ptr(ov7740_of_match),
>> + },
>> + .probe = ov7740_probe,
>> + .remove = ov7740_remove,
>> + .id_table = ov7740_id,
>> +};
>> +module_i2c_driver(ov7740_i2c_driver);
>> +
>> +MODULE_DESCRIPTION("The V4L2 driver for Omnivision 7740 sensor");
>> +MODULE_AUTHOR("Songjun Wu <songjun.wu@atmel.com>");
>> +MODULE_LICENSE("GPL v2");
>>
Best Regards,
Wenyou Yang
new file mode 100644
@@ -0,0 +1,43 @@
+* Omnivision OV7740 CMOS image sensor
+
+The Omnivision OV7740 image sensor supports multiple output image
+size, such as VGA, and QVGA, CIF and any size smaller. It also
+supports the RAW RGB and YUV output formats.
+
+Required Properties:
+- compatible: should be "ovti,ov7740"
+- clocks: reference to the xvclk input clock.
+- clock-names: should be "xvclk".
+
+Optional Properties:
+- reset-gpios: reference to the GPIO connected to the reset_b pin,
+ if any. Active low with pull-ip resistor.
+- powerdown-gpios: reference to the GPIO connected to the pwdn pin,
+ if any. Active high with pull-down resistor.
+
+The device node must contain one 'port' child node for its digital
+output video port, in accordance with the video interface bindings
+defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+
+ i2c1: i2c@fc028000 {
+ ov7740: camera@21 {
+ compatible = "ovti,ov7740";
+ reg = <0x21>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_sensor_power &pinctrl_sensor_reset>;
+ clocks = <&isc>;
+ clock-names = "xvclk";
+ assigned-clocks = <&isc>;
+ assigned-clock-rates = <24000000>;
+ reset-gpios = <&pioA 43 GPIO_ACTIVE_LOW>;
+ powerdown-gpios = <&pioA 44 GPIO_ACTIVE_HIGH>;
+
+ port {
+ ov7740_0: endpoint {
+ remote-endpoint = <&isc_0>;
+ };
+ };
+ };
+ };
@@ -657,6 +657,14 @@ config VIDEO_OV7670
OV7670 VGA camera. It currently only works with the M88ALP01
controller.
+config VIDEO_OV7740
+ tristate "OmniVision OV7740 sensor support"
+ depends on I2C && VIDEO_V4L2
+ depends on MEDIA_CAMERA_SUPPORT
+ ---help---
+ This is a Video4Linux2 sensor-level driver for the OmniVision
+ OV7740 VGA camera sensor.
+
config VIDEO_OV9650
tristate "OmniVision OV9650/OV9652 sensor support"
depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
@@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_OV5670) += ov5670.o
obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
obj-$(CONFIG_VIDEO_OV7640) += ov7640.o
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
+obj-$(CONFIG_VIDEO_OV7740) += ov7740.o
obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
obj-$(CONFIG_VIDEO_OV13858) += ov13858.o
obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o
new file mode 100644
@@ -0,0 +1,1220 @@
+/*
+ * Copyright (c) 2017 Microchip Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-image-sizes.h>
+#include <media/v4l2-subdev.h>
+
+#define REG_OUTSIZE_LSB 0x34
+
+/* OV7740 register tables */
+#define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */
+#define REG_BGAIN 0x01 /* blue gain */
+#define REG_RGAIN 0x02 /* red gain */
+#define REG_GGAIN 0x03 /* green gain */
+#define REG_REG04 0x04 /* analog setting, dont change*/
+#define REG_BAVG 0x05 /* b channel average */
+#define REG_GAVG 0x06 /* g channel average */
+#define REG_RAVG 0x07 /* r channel average */
+
+#define REG_REG0C 0x0C /* filp enable */
+#define REG0C_IMG_FLIP 0x80
+#define REG0C_IMG_MIRROR 0x40
+
+#define REG_REG0E 0x0E /* blc line */
+#define REG_HAEC 0x0F /* auto exposure cntrl */
+#define REG_AEC 0x10 /* auto exposure cntrl */
+
+#define REG_CLK 0x11 /* Clock control */
+#define REG_REG55 0x55 /* Clock PLL DIV/PreDiv */
+
+#define REG_REG12 0x12
+
+#define REG_REG13 0x13 /* auto/manual AGC, AEC, Write Balance*/
+#define REG13_AEC_EN 0x01
+#define REG13_AGC_EN 0x04
+
+#define REG_REG14 0x14
+#define REG_REG15 0x15
+#define REG15_GAIN_MSB 0x03
+
+#define REG_REG16 0x16
+
+#define REG_MIDH 0x1C /* manufacture id byte */
+#define REG_MIDL 0x1D /* manufacture id byre */
+#define REG_PIDH 0x0A /* Product ID MSB */
+#define REG_PIDL 0x0B /* Product ID LSB */
+
+#define REG_84 0x84 /* lots of stuff */
+#define REG_REG38 0x38 /* sub-addr */
+
+#define REG_AHSTART 0x17 /* Horiz start high bits */
+#define REG_AHSIZE 0x18
+#define REG_AVSTART 0x19 /* Vert start high bits */
+#define REG_AVSIZE 0x1A
+#define REG_PSHFT 0x1b /* Pixel delay after HREF */
+
+#define REG_HOUTSIZE 0x31
+#define REG_VOUTSIZE 0x32
+#define REG_HVSIZEOFF 0x33
+#define REG_REG34 0x34 /* DSP output size H/V LSB*/
+
+#define REG_ISP_CTRL00 0x80
+#define ISPCTRL00_AWB_EN 0x10
+#define ISPCTRL00_AWB_GAIN_EN 0x04
+
+#define REG_YGAIN 0xE2 /* ygain for contrast control */
+
+#define REG_YBRIGHT 0xE3
+#define REG_SGNSET 0xE4
+#define SGNSET_YBRIGHT_MASK 0x08
+
+#define REG_USAT 0xDD
+#define REG_VSAT 0xDE
+
+
+struct ov7740 {
+ struct v4l2_subdev subdev;
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ struct media_pad pad;
+#endif
+ struct v4l2_mbus_framefmt format;
+ struct ov7740_pixfmt *fmt; /* Current format */
+ struct ov7740_framesize *frmsize;
+ struct regmap *regmap;
+ struct clk *xvclk;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct {
+ /* gain cluster */
+ struct v4l2_ctrl *auto_gain;
+ struct v4l2_ctrl *gain;
+ };
+ struct {
+ struct v4l2_ctrl *auto_wb;
+ struct v4l2_ctrl *blue_balance;
+ struct v4l2_ctrl *red_balance;
+ };
+ struct {
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+ };
+ struct {
+ /* exposure cluster */
+ struct v4l2_ctrl *auto_exposure;
+ struct v4l2_ctrl *exposure;
+ };
+ struct {
+ /* saturation/hue cluster */
+ struct v4l2_ctrl *saturation;
+ struct v4l2_ctrl *hue;
+ };
+ struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *contrast;
+
+ struct mutex mutex; /* To serialize asynchronus callbacks */
+ bool streaming; /* Streaming on/off */
+
+ struct gpio_desc *resetb_gpio;
+ struct gpio_desc *pwdn_gpio;
+};
+
+struct ov7740_pixfmt {
+ u32 mbus_code;
+ enum v4l2_colorspace colorspace;
+ const struct reg_sequence *regs;
+ u32 reg_num;
+};
+
+struct ov7740_framesize {
+ u16 width;
+ u16 height;
+ const struct reg_sequence *regs;
+ u32 reg_num;
+};
+
+static const struct reg_sequence ov7740_vga[] = {
+ {0x55, 0x40},
+ {0x11, 0x02},
+
+ {0xd5, 0x10},
+ {0x0c, 0x12},
+ {0x0d, 0x34},
+ {0x17, 0x25},
+ {0x18, 0xa0},
+ {0x19, 0x03},
+ {0x1a, 0xf0},
+ {0x1b, 0x89},
+ {0x22, 0x03},
+ {0x29, 0x18},
+ {0x2b, 0xf8},
+ {0x2c, 0x01},
+ {REG_HOUTSIZE, 0xa0},
+ {REG_VOUTSIZE, 0xf0},
+ {0x33, 0xc4},
+ {REG_OUTSIZE_LSB, 0x0},
+ {0x35, 0x05},
+ //{0x36, 0x3f},
+ {0x04, 0x60},
+ {0x27, 0x80},
+ {0x3d, 0x0f},
+ {0x3e, 0x80},
+ {0x3f, 0x40},
+ {0x40, 0x7f},
+ {0x41, 0x6a},
+ {0x42, 0x29},
+ {0x44, 0x22},
+ {0x45, 0x41},
+ {0x47, 0x02},
+ {0x49, 0x64},
+ {0x4a, 0xa1},
+ {0x4b, 0x40},
+ {0x4c, 0x1a},
+ {0x4d, 0x50},
+ {0x4e, 0x13},
+ {0x64, 0x00},
+ {0x67, 0x88},
+ {0x68, 0x1a},
+
+ {0x14, 0x28},
+ {0x24, 0x3c},
+ {0x25, 0x30},
+ {0x26, 0x72},
+ {0x50, 0x97},
+ {0x51, 0x1f},
+ {0x52, 0x00},
+ {0x53, 0x00},
+ {0x20, 0x00},
+ {0x21, 0xcf},
+ {0x50, 0x4b},
+ {0x38, 0x14},
+ {0xe9, 0x00},
+ {0x56, 0x55},
+ {0x57, 0xff},
+ {0x58, 0xff},
+ {0x59, 0xff},
+ {0x5f, 0x04},
+ {0xec, 0x00},
+ {0x13, 0xff},
+
+ //{0x80,0x7f},
+ {0x81, 0x3f},
+ {0x82, 0x32},
+ //{0x83, 0x01},
+ {0x38, 0x11},
+ {0x84, 0x70},
+ {0x85, 0x00},
+ {0x86, 0x03},
+ {0x87, 0x01},
+ {0x88, 0x05},
+ {0x89, 0x30},
+ {0x8d, 0x30},
+ {0x8f, 0x85},
+ {0x93, 0x30},
+ {0x95, 0x85},
+ {0x99, 0x30},
+ {0x9b, 0x85},
+
+ {0x9c, 0x08},
+ {0x9d, 0x12},
+ {0x9e, 0x23},
+ {0x9f, 0x45},
+ {0xa0, 0x55},
+ {0xa1, 0x64},
+ {0xa2, 0x72},
+ {0xa3, 0x7f},
+ {0xa4, 0x8b},
+ {0xa5, 0x95},
+ {0xa6, 0xa7},
+ {0xa7, 0xb5},
+ {0xa8, 0xcb},
+ {0xa9, 0xdd},
+ {0xaa, 0xec},
+ {0xab, 0x1a},
+
+ {0xce, 0x78},
+ {0xcf, 0x6e},
+ {0xd0, 0x0a},
+ {0xd1, 0x0c},
+ {0xd2, 0x84},
+ {0xd3, 0x90},
+ {0xd4, 0x1e},
+
+ {0x5a, 0x24},
+ {0x5b, 0x1f},
+ {0x5c, 0x88},
+ {0x5d, 0x60},
+
+ {0xac, 0x6e},
+ {0xbe, 0xff},
+ {0xbf, 0x00},
+
+ {0x0f, 0x1d},
+ {0x0f, 0x1f},
+};
+
+static struct ov7740_framesize ov7740_framesizes[] = {
+ {
+ .width = VGA_WIDTH,
+ .height = VGA_HEIGHT,
+ .regs = ov7740_vga,
+ .reg_num = ARRAY_SIZE(ov7740_vga),
+ },
+};
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int ov7740_get_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+ struct regmap *regmap = ov7740->regmap;
+ unsigned int val = 0;
+ int ret;
+
+ ret = regmap_read(regmap, reg->reg & 0xff, &val);
+ reg->val = val;
+ reg->size = 1;
+
+ return 0;
+}
+
+static int ov7740_set_register(struct v4l2_subdev *sd,
+ const struct v4l2_dbg_register *reg)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+ struct regmap *regmap = ov7740->regmap;
+
+ regmap_write(regmap, reg->reg & 0xff, reg->val & 0xff);
+
+ return 0;
+}
+#endif
+
+static int ov7740_set_power(struct v4l2_subdev *sd, int on)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+
+ if (ov7740->pwdn_gpio)
+ gpiod_direction_output(ov7740->pwdn_gpio, !on);
+ if (on && ov7740->resetb_gpio) {
+ gpiod_set_value(ov7740->resetb_gpio, 1);
+ usleep_range(500, 1000);
+ gpiod_set_value(ov7740->resetb_gpio, 0);
+ usleep_range(3000, 5000);
+ }
+
+ return 0;
+}
+
+static struct v4l2_subdev_core_ops ov7740_subdev_core_ops = {
+ .log_status = v4l2_ctrl_subdev_log_status,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = ov7740_get_register,
+ .s_register = ov7740_set_register,
+#endif
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static int ov7740_set_white_balance(struct ov7740 *ov7740, int awb)
+{
+ struct regmap *regmap = ov7740->regmap;
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(regmap, REG_ISP_CTRL00, &value);
+ if (!ret) {
+ if (awb)
+ value |= (ISPCTRL00_AWB_EN | ISPCTRL00_AWB_GAIN_EN);
+ else
+ value &= ~(ISPCTRL00_AWB_EN | ISPCTRL00_AWB_GAIN_EN);
+ ret = regmap_write(regmap, REG_ISP_CTRL00, value);
+ if (ret)
+ return ret;
+ }
+
+ if (!awb) {
+ ret = regmap_write(regmap, REG_BGAIN,
+ ov7740->blue_balance->val);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(regmap, REG_RGAIN, ov7740->red_balance->val);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ov7740_set_saturation(struct regmap *regmap, int value)
+{
+ int ret;
+
+ ret = regmap_write(regmap, REG_USAT, (unsigned char)value);
+ ret = regmap_write(regmap, REG_VSAT, (unsigned char)value);
+
+ return ret;
+}
+
+static int ov7740_set_gain(struct regmap *regmap, int value)
+{
+ int ret;
+
+ ret = regmap_write(regmap, REG_GAIN, value & 0xff);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(regmap, REG_REG15,
+ REG15_GAIN_MSB, (value >> 8) & 0x3);
+ if (!ret)
+ ret = regmap_update_bits(regmap, REG_REG13, REG13_AGC_EN, 0);
+
+ return ret;
+}
+
+static int ov7740_set_autogain(struct regmap *regmap, int value)
+{
+ unsigned int reg;
+ int ret;
+
+ ret = regmap_read(regmap, REG_REG13, ®);
+ if (ret)
+ return ret;
+ if (value)
+ reg |= REG13_AGC_EN;
+ else
+ reg &= ~REG13_AGC_EN;
+ return regmap_write(regmap, REG_REG13, reg);
+}
+
+static int ov7740_set_brightness(struct regmap *regmap, int value)
+{
+ /* Turn off AEC/AGC */
+ regmap_update_bits(regmap, REG_REG13, REG13_AEC_EN, 0);
+ regmap_update_bits(regmap, REG_REG13, REG13_AGC_EN, 0);
+
+ if (value >= 0) {
+ regmap_write(regmap, REG_YBRIGHT, (unsigned char)value);
+ regmap_update_bits(regmap, REG_SGNSET, SGNSET_YBRIGHT_MASK, 0);
+ } else{
+ regmap_write(regmap, REG_YBRIGHT, (unsigned char)(-value));
+ regmap_update_bits(regmap, REG_SGNSET, SGNSET_YBRIGHT_MASK, 1);
+ }
+
+ return 0;
+}
+
+static int ov7740_set_contrast(struct regmap *regmap, int value)
+{
+ return regmap_write(regmap, REG_YGAIN, (unsigned char)value);
+}
+
+static int ov7740_get_gain(struct ov7740 *ov7740, struct v4l2_ctrl *ctrl)
+{
+ struct regmap *regmap = ov7740->regmap;
+ unsigned int value0, value1;
+ int ret;
+
+ if (!ctrl->val)
+ return 0;
+
+ ret = regmap_read(regmap, REG_GAIN, &value0);
+ if (ret)
+ return ret;
+ ret = regmap_read(regmap, REG_REG15, &value1);
+ if (ret)
+ return ret;
+
+ ov7740->gain->val = (value1 << 8) | (value0 & 0xff);
+
+ return 0;
+}
+
+static int ov7740_set_exp(struct regmap *regmap, int value)
+{
+ int ret;
+
+ /* Turn off AEC/AGC */
+ ret = regmap_update_bits(regmap, REG_REG13,
+ REG13_AEC_EN | REG13_AGC_EN, 0);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(regmap, REG_AEC, (unsigned char)value);
+ if (ret)
+ return ret;
+
+ return regmap_write(regmap, REG_HAEC, (unsigned char)(value >> 8));
+}
+
+static int ov7740_set_autoexp(struct regmap *regmap,
+ enum v4l2_exposure_auto_type value)
+{
+ unsigned int reg;
+ int ret;
+
+ ret = regmap_read(regmap, REG_REG13, ®);
+ if (!ret) {
+ if (value == V4L2_EXPOSURE_AUTO)
+ reg |= (REG13_AEC_EN | REG13_AGC_EN);
+ else
+ reg &= ~(REG13_AEC_EN | REG13_AGC_EN);
+ ret = regmap_write(regmap, REG_REG13, reg);
+ }
+
+ return ret;
+}
+
+
+static int ov7740_get_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov7740 *ov7740 = container_of(ctrl->handler,
+ struct ov7740, ctrl_handler);
+ int ret;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTOGAIN:
+ ret = ov7740_get_gain(ov7740, ctrl);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int ov7740_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov7740 *ov7740 = container_of(ctrl->handler,
+ struct ov7740, ctrl_handler);
+ struct i2c_client *client = v4l2_get_subdevdata(&ov7740->subdev);
+ struct regmap *regmap = ov7740->regmap;
+ int ret;
+ u8 val;
+
+ if (pm_runtime_get_if_in_use(&client->dev) <= 0)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ ret = ov7740_set_white_balance(ov7740, ctrl->val);
+ break;
+ case V4L2_CID_SATURATION:
+ ret = ov7740_set_saturation(regmap, ctrl->val);
+ break;
+ case V4L2_CID_BRIGHTNESS:
+ ret = ov7740_set_brightness(regmap, ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ ret = ov7740_set_contrast(regmap, ctrl->val);
+ break;
+ case V4L2_CID_VFLIP:
+ ret = regmap_update_bits(regmap, REG_REG0C,
+ REG0C_IMG_FLIP, val);
+ break;
+ case V4L2_CID_HFLIP:
+ val = ctrl->val ? REG0C_IMG_MIRROR : 0x00;
+ ret = regmap_update_bits(regmap, REG_REG0C,
+ REG0C_IMG_MIRROR, val);
+ break;
+ case V4L2_CID_AUTOGAIN:
+ if (!ctrl->val)
+ return ov7740_set_gain(regmap, ov7740->gain->val);
+
+ ret = ov7740_set_autogain(regmap, ctrl->val);
+ break;
+
+ case V4L2_CID_EXPOSURE_AUTO:
+ if (ctrl->val == V4L2_EXPOSURE_MANUAL)
+ return ov7740_set_exp(regmap, ov7740->exposure->val);
+
+ ret = ov7740_set_autoexp(regmap, ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_put(&client->dev);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops ov7740_ctrl_ops = {
+ .g_volatile_ctrl = ov7740_get_volatile_ctrl,
+ .s_ctrl = ov7740_set_ctrl,
+};
+
+static int ov7740_start_streaming(struct ov7740 *ov7740)
+{
+ int ret;
+
+ /* Apply customized values from user */
+ ret = __v4l2_ctrl_handler_setup(ov7740->subdev.ctrl_handler);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+static int ov7740_set_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ mutex_lock(&ov7740->mutex);
+ if (ov7740->streaming == enable) {
+ mutex_unlock(&ov7740->mutex);
+ return 0;
+ }
+
+ if (enable) {
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&client->dev);
+ goto err_unlock;
+ }
+
+ ret = ov7740_start_streaming(ov7740);
+ if (ret)
+ goto err_rpm_put;
+ } else {
+ pm_runtime_put(&client->dev);
+ }
+
+ ov7740->streaming = enable;
+
+ mutex_unlock(&ov7740->mutex);
+ return ret;
+
+err_rpm_put:
+ pm_runtime_put(&client->dev);
+err_unlock:
+ mutex_unlock(&ov7740->mutex);
+ return ret;
+}
+
+static int ov7740_get_parm(struct v4l2_subdev *sd,
+ struct v4l2_streamparm *parms)
+{
+ struct v4l2_captureparm *cp = &parms->parm.capture;
+ struct v4l2_fract *tpf = &cp->timeperframe;
+
+ if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ memset(cp, 0, sizeof(struct v4l2_captureparm));
+ cp->capability = V4L2_CAP_TIMEPERFRAME;
+
+ tpf->numerator = 1;
+ tpf->denominator = 60;
+
+ return 0;
+}
+
+static int ov7740_set_parm(struct v4l2_subdev *sd,
+ struct v4l2_streamparm *parms)
+{
+ struct v4l2_captureparm *cp = &parms->parm.capture;
+ struct v4l2_fract *tpf = &cp->timeperframe;
+
+ if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (cp->extendedmode != 0)
+ return -EINVAL;
+
+ cp->capability = V4L2_CAP_TIMEPERFRAME;
+
+ tpf->numerator = 1;
+ tpf->denominator = 60;
+
+ return 0;
+}
+
+static struct v4l2_subdev_video_ops ov7740_subdev_video_ops = {
+ .s_stream = ov7740_set_stream,
+ .s_parm = ov7740_set_parm,
+ .g_parm = ov7740_get_parm,
+};
+
+static const struct reg_sequence ov7740_format_yuyv[] = {
+ {0x12, 0x00},
+ {0x36, 0x3f},
+ {0x80, 0x7f},
+ {0x83, 0x01},
+};
+
+static const struct reg_sequence ov7740_format_bggr8[] = {
+ {0x36, 0x2f},
+ {0x80, 0x01},
+ {0x83, 0x04},
+};
+
+static struct ov7740_pixfmt ov7740_formats[] = {
+ {
+ .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .regs = ov7740_format_yuyv,
+ .reg_num = ARRAY_SIZE(ov7740_format_yuyv),
+ },
+ {
+ .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .regs = ov7740_format_bggr8,
+ .reg_num = ARRAY_SIZE(ov7740_format_bggr8),
+ }
+};
+#define N_OV7740_FMTS ARRAY_SIZE(ov7740_formats)
+
+static int ov7740_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->pad || code->index >= N_OV7740_FMTS)
+ return -EINVAL;
+
+ code->code = ov7740_formats[code->index].mbus_code;
+
+ return 0;
+}
+
+static int ov7740_enum_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_interval_enum *fie)
+{
+ if (fie->pad)
+ return -EINVAL;
+
+ if (fie->index >= 1)
+ return -EINVAL;
+
+ if ((fie->width != VGA_WIDTH) || (fie->height != VGA_HEIGHT))
+ return -EINVAL;
+
+ fie->interval.numerator = 1;
+ fie->interval.denominator = 60;
+
+ return 0;
+}
+
+static int ov7740_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ if (fse->pad)
+ return -EINVAL;
+
+ if (fse->index > 0)
+ return -EINVAL;
+
+ fse->min_width = fse->max_width = VGA_WIDTH;
+ fse->min_height = fse->max_height = VGA_HEIGHT;
+
+ return 0;
+}
+
+static int ov7740_try_fmt_internal(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *fmt,
+ struct ov7740_pixfmt **ret_fmt,
+ struct ov7740_framesize **ret_frmsize)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+ struct ov7740_framesize *fsize = &ov7740_framesizes[0];
+ int index, i;
+
+ for (index = 0; index < N_OV7740_FMTS; index++) {
+ if (ov7740_formats[index].mbus_code == fmt->code)
+ break;
+ }
+ if (index >= N_OV7740_FMTS) {
+ /* default to first format */
+ index = 0;
+ fmt->code = ov7740_formats[0].mbus_code;
+ }
+ if (ret_fmt != NULL)
+ *ret_fmt = ov7740_formats + index;
+
+ for (i = 0; i < ARRAY_SIZE(ov7740_framesizes); i++) {
+ if ((fsize->width >= fmt->width) &&
+ (fsize->height >= fmt->height)) {
+ fmt->width = fsize->width;
+ fmt->height = fsize->height;
+ break;
+ }
+
+ fsize++;
+ }
+
+ if (ret_frmsize != NULL)
+ *ret_frmsize = fsize;
+
+ fmt->field = V4L2_FIELD_NONE;
+ fmt->colorspace = ov7740_formats[index].colorspace;
+
+ ov7740->format = *fmt;
+
+ return 0;
+}
+
+static int ov7740_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+ struct ov7740_pixfmt *ovfmt;
+ struct ov7740_framesize *fsize;
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ struct v4l2_mbus_framefmt *mbus_fmt;
+#endif
+ int ret;
+
+ mutex_lock(&ov7740->mutex);
+ if (format->pad) {
+ ret = -EINVAL;
+ goto error;
+ }
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ ret = ov7740_try_fmt_internal(sd, &format->format, NULL, NULL);
+ if (ret)
+ goto error;
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
+ *mbus_fmt = format->format;
+
+ mutex_unlock(&ov7740->mutex);
+ return 0;
+#else
+ ret = -ENOTTY;
+ goto error;
+#endif
+ }
+
+ ret = ov7740_try_fmt_internal(sd, &format->format, &ovfmt, &fsize);
+ if (ret)
+ goto error;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+ regmap_multi_reg_write(ov7740->regmap,
+ ovfmt->regs, ovfmt->reg_num);
+
+ regmap_multi_reg_write(ov7740->regmap,
+ fsize->regs, fsize->reg_num);
+ }
+
+ ov7740->fmt = ovfmt;
+
+ mutex_unlock(&ov7740->mutex);
+ return 0;
+
+error:
+ mutex_unlock(&ov7740->mutex);
+ return ret;
+}
+
+static int ov7740_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ struct v4l2_mbus_framefmt *mbus_fmt;
+#endif
+ int ret = 0;
+
+ mutex_lock(&ov7740->mutex);
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ mbus_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
+ format->format = *mbus_fmt;
+ ret = 0;
+#else
+ ret = -ENOTTY;
+#endif
+ } else {
+ format->format = ov7740->format;
+ }
+ mutex_unlock(&ov7740->mutex);
+
+ return ret;
+}
+
+static const struct v4l2_subdev_pad_ops ov7740_subdev_pad_ops = {
+ .enum_frame_interval = ov7740_enum_frame_interval,
+ .enum_frame_size = ov7740_enum_frame_size,
+ .enum_mbus_code = ov7740_enum_mbus_code,
+ .get_fmt = ov7740_get_fmt,
+ .set_fmt = ov7740_set_fmt,
+};
+
+static struct v4l2_subdev_ops ov7740_subdev_ops = {
+ .core = &ov7740_subdev_core_ops,
+ .video = &ov7740_subdev_video_ops,
+ .pad = &ov7740_subdev_pad_ops,
+};
+
+static void ov7740_get_default_format(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *format)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+
+ format->width = ov7740->frmsize->width;
+ format->height = ov7740->frmsize->height;
+ format->colorspace = ov7740->fmt->colorspace;
+ format->code = ov7740->fmt->mbus_code;
+ format->field = V4L2_FIELD_NONE;
+}
+
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+static int ov7740_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+ struct v4l2_mbus_framefmt *format =
+ v4l2_subdev_get_try_format(sd, fh->pad, 0);
+
+ mutex_lock(&ov7740->mutex);
+ ov7740_get_default_format(sd, format);
+ mutex_unlock(&ov7740->mutex);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_internal_ops ov7740_subdev_internal_ops = {
+ .open = ov7740_open,
+};
+#endif
+
+static int ov7740_probe_dt(struct i2c_client *client,
+ struct ov7740 *ov7740)
+{
+ ov7740->resetb_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(ov7740->resetb_gpio)) {
+ dev_info(&client->dev, "can't get %s GPIO\n", "reset");
+ return PTR_ERR(ov7740->resetb_gpio);
+ }
+
+ ov7740->pwdn_gpio = devm_gpiod_get_optional(&client->dev, "powerdown",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(ov7740->pwdn_gpio)) {
+ dev_info(&client->dev, "can't get %s GPIO\n", "powerdown");
+ return PTR_ERR(ov7740->pwdn_gpio);
+ }
+
+ return 0;
+}
+
+static int ov7740_detect(struct ov7740 *ov7740)
+{
+ struct regmap *regmap = ov7740->regmap;
+ unsigned int midh, midl, pidh, pidl;
+ int ret;
+
+ ret = regmap_read(regmap, REG_MIDH, &midh);
+ if (ret)
+ return ret;
+ if (midh != 0x7f)
+ return -ENODEV;
+
+ ret = regmap_read(regmap, REG_MIDL, &midl);
+ if (ret)
+ return ret;
+ if (midl != 0xa2)
+ return -ENODEV;
+
+ ret = regmap_read(regmap, REG_PIDH, &pidh);
+ if (ret)
+ return ret;
+ if (pidh != 0x77)
+ return -ENODEV;
+
+ ret = regmap_read(regmap, REG_PIDL, &pidl);
+ if (ret)
+ return ret;
+ if ((pidl != 0x40) && (pidl != 0x41) && (pidl != 0x42))
+ return -ENODEV;
+
+ return 0;
+}
+
+static int ov7740_init_controls(struct ov7740 *ov7740)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov7740->subdev);
+ struct v4l2_ctrl_handler *ctrl_hdlr = &ov7740->ctrl_handler;
+ int ret;
+
+ ret = v4l2_ctrl_handler_init(ctrl_hdlr, 2);
+ if (ret < 0)
+ return ret;
+
+ ctrl_hdlr->lock = &ov7740->mutex;
+ ov7740->auto_wb = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_AUTO_WHITE_BALANCE,
+ 0, 1, 1, 1);
+ ov7740->blue_balance = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_BLUE_BALANCE,
+ 0, 0xff, 1, 0x80);
+ ov7740->red_balance = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_RED_BALANCE,
+ 0, 0xff, 1, 0x80);
+
+ ov7740->brightness = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_BRIGHTNESS,
+ -255, 255, 1, 0);
+ ov7740->contrast = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_CONTRAST,
+ 0, 127, 1, 0x20);
+ ov7740->saturation = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 256, 1, 0x80);
+ ov7740->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ ov7740->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+ ov7740->gain = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_GAIN, 0, 1023, 1, 500);
+ ov7740->auto_gain = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
+ ov7740->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov7740_ctrl_ops,
+ V4L2_CID_EXPOSURE, 0, 65535, 1, 500);
+ ov7740->auto_exposure = v4l2_ctrl_new_std_menu(ctrl_hdlr,
+ &ov7740_ctrl_ops,
+ V4L2_CID_EXPOSURE_AUTO,
+ V4L2_EXPOSURE_MANUAL, 0,
+ V4L2_EXPOSURE_AUTO);
+
+ ov7740->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ ov7740->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
+
+ v4l2_ctrl_auto_cluster(3, &ov7740->auto_wb, 0, false);
+ v4l2_ctrl_auto_cluster(2, &ov7740->auto_gain, 0, true);
+ v4l2_ctrl_auto_cluster(2, &ov7740->auto_exposure,
+ V4L2_EXPOSURE_MANUAL, false);
+ v4l2_ctrl_cluster(2, &ov7740->hflip);
+
+ ret = v4l2_ctrl_handler_setup(ctrl_hdlr);
+ if (ret) {
+ dev_err(&client->dev, "%s control init failed (%d)\n",
+ __func__, ret);
+ goto error;
+ }
+
+ ov7740->subdev.ctrl_handler = ctrl_hdlr;
+ return 0;
+
+error:
+ v4l2_ctrl_handler_free(ctrl_hdlr);
+ mutex_destroy(&ov7740->mutex);
+ return ret;
+}
+
+static void ov7740_free_controls(struct ov7740 *ov7740)
+{
+ v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
+ mutex_destroy(&ov7740->mutex);
+}
+
+#define OV7740_MAX_REGISTER 0xff
+static const struct regmap_config ov7740_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = OV7740_MAX_REGISTER,
+};
+
+static int ov7740_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ov7740 *ov7740;
+ struct v4l2_subdev *sd;
+ int ret;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_err(&client->dev,
+ "OV7740: I2C-Adapter doesn't support SMBUS\n");
+ return -EIO;
+ }
+
+ ov7740 = devm_kzalloc(&client->dev, sizeof(*ov7740), GFP_KERNEL);
+ if (!ov7740)
+ return -ENOMEM;
+
+ ov7740->xvclk = devm_clk_get(&client->dev, "xvclk");
+ if (IS_ERR(ov7740->xvclk)) {
+ ret = PTR_ERR(ov7740->xvclk);
+ dev_err(&client->dev,
+ "OV7740: fail to get xvclk: %d\n", ret);
+ return ret;
+ }
+
+ ret = ov7740_probe_dt(client, ov7740);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(ov7740->xvclk);
+ if (ret)
+ return ret;
+
+ ov7740->regmap = devm_regmap_init_i2c(client, &ov7740_regmap_config);
+ if (IS_ERR(ov7740->regmap)) {
+ ret = PTR_ERR(ov7740->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ goto error_regmap_init;
+ }
+
+ sd = &ov7740->subdev;
+ client->flags |= I2C_CLIENT_SCCB;
+ v4l2_i2c_subdev_init(sd, client, &ov7740_subdev_ops);
+
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ sd->internal_ops = &ov7740_subdev_internal_ops;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+#endif
+
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ ov7740->pad.flags = MEDIA_PAD_FL_SOURCE;
+ sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ret = media_entity_pads_init(&sd->entity, 1, &ov7740->pad);
+ if (ret)
+ goto error_regmap_init;
+#endif
+
+ ov7740_set_power(sd, 1);
+
+ ret = ov7740_detect(ov7740);
+ if (ret)
+ goto error_detect;
+
+ mutex_init(&ov7740->mutex);
+
+ ret = ov7740_init_controls(ov7740);
+ if (ret)
+ goto error_init_controls;
+
+ v4l_info(client, "chip found @ 0x%02x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ ov7740->fmt = &ov7740_formats[0];
+ ov7740->frmsize = &ov7740_framesizes[0];
+
+ ov7740_get_default_format(sd, &ov7740->format);
+
+ ret = v4l2_async_register_subdev(sd);
+ if (ret)
+ goto error_async_register;
+
+ pm_runtime_get_noresume(&client->dev);
+ pm_runtime_set_active(&client->dev);
+ pm_runtime_enable(&client->dev);
+ pm_runtime_put(&client->dev);
+
+ return 0;
+
+error_async_register:
+ v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
+error_init_controls:
+ ov7740_free_controls(ov7740);
+ ov7740_set_power(sd, 0);
+error_detect:
+ media_entity_cleanup(&ov7740->subdev.entity);
+error_regmap_init:
+ clk_disable_unprepare(ov7740->xvclk);
+
+ return ret;
+}
+
+static int ov7740_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+
+ clk_disable_unprepare(ov7740->xvclk);
+ mutex_destroy(&ov7740->mutex);
+ v4l2_ctrl_handler_free(ov7740->subdev.ctrl_handler);
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ media_entity_cleanup(&ov7740->subdev.entity);
+#endif
+ v4l2_async_unregister_subdev(sd);
+ ov7740_free_controls(ov7740);
+
+ pm_runtime_get_sync(&client->dev);
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+ pm_runtime_put_noidle(&client->dev);
+
+ return 0;
+}
+
+static int __maybe_unused ov7740_runtime_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+
+ clk_disable_unprepare(ov7740->xvclk);
+ ov7740_set_power(sd, 0);
+
+ return 0;
+}
+
+static int __maybe_unused ov7740_runtime_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov7740 *ov7740 = container_of(sd, struct ov7740, subdev);
+
+ ov7740_set_power(sd, 1);
+ return clk_prepare_enable(ov7740->xvclk);
+}
+
+static const struct i2c_device_id ov7740_id[] = {
+ { "ov7740", 0 },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, ov7740_id);
+
+static const struct dev_pm_ops ov7740_pm_ops = {
+ SET_RUNTIME_PM_OPS(ov7740_runtime_suspend, ov7740_runtime_resume, NULL)
+};
+
+static const struct of_device_id ov7740_of_match[] = {
+ {.compatible = "ovti,ov7740", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, ov7740_of_match);
+
+
+static struct i2c_driver ov7740_i2c_driver = {
+ .driver = {
+ .name = "ov7740",
+ .pm = &ov7740_pm_ops,
+ .of_match_table = of_match_ptr(ov7740_of_match),
+ },
+ .probe = ov7740_probe,
+ .remove = ov7740_remove,
+ .id_table = ov7740_id,
+};
+module_i2c_driver(ov7740_i2c_driver);
+
+MODULE_DESCRIPTION("The V4L2 driver for Omnivision 7740 sensor");
+MODULE_AUTHOR("Songjun Wu <songjun.wu@atmel.com>");
+MODULE_LICENSE("GPL v2");