Quoting Bingbu Cao (2023-02-09 11:22:38) > Add v4l2 device driver for OmniVision ov01a10 image sensor, ov01a10 > image sensor can deliver 1280x800 resolution BGGR10 images at 60 fps. Could you also implement the V4L2 Selection API please? V4L2_SEL_TGT_CROP_DEFAULT V4L2_SEL_TGT_CROP V4L2_SEL_TGT_CROP_BOUNDS https://git.libcamera.org/libcamera/libcamera.git/tree/Documentation/sensor_driver_requirements.rst may have other details to check too. -- Regards Kieran > > Signed-off-by: Bingbu Cao <bingbu.cao@xxxxxxxxx> > Signed-off-by: Yating Wang <yating.wang@xxxxxxxxx> > --- > drivers/media/i2c/Kconfig | 13 + > drivers/media/i2c/Makefile | 1 + > drivers/media/i2c/ov01a10.c | 906 ++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 920 insertions(+) > create mode 100644 drivers/media/i2c/ov01a10.c > > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > index 833241897d63..8e5d1ef0616f 100644 > --- a/drivers/media/i2c/Kconfig > +++ b/drivers/media/i2c/Kconfig > @@ -338,6 +338,19 @@ config VIDEO_OG01A1B > To compile this driver as a module, choose M here: the > module will be called og01a1b. > > +config VIDEO_OV01A10 > + tristate "OmniVision OV01A10 sensor support" > + depends on VIDEO_DEV && I2C > + select MEDIA_CONTROLLER > + select VIDEO_V4L2_SUBDEV_API > + select V4L2_FWNODE > + help > + This is a Video4Linux2 sensor driver for the OmniVision > + OV01A10 camera. > + > + To compile this driver as a module, choose M here: the > + module will be called ov01a10. > + > config VIDEO_OV02A10 > tristate "OmniVision OV02A10 sensor support" > depends on VIDEO_DEV && I2C > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile > index 4d6c052bb5a7..ce214503b526 100644 > --- a/drivers/media/i2c/Makefile > +++ b/drivers/media/i2c/Makefile > @@ -70,6 +70,7 @@ obj-$(CONFIG_VIDEO_MT9V032) += mt9v032.o > obj-$(CONFIG_VIDEO_MT9V111) += mt9v111.o > obj-$(CONFIG_VIDEO_NOON010PC30) += noon010pc30.o > obj-$(CONFIG_VIDEO_OG01A1B) += og01a1b.o > +obj-$(CONFIG_VIDEO_OV01A10) += ov01a10.o > obj-$(CONFIG_VIDEO_OV02A10) += ov02a10.o > obj-$(CONFIG_VIDEO_OV08D10) += ov08d10.o > obj-$(CONFIG_VIDEO_OV08X40) += ov08x40.o > diff --git a/drivers/media/i2c/ov01a10.c b/drivers/media/i2c/ov01a10.c > new file mode 100644 > index 000000000000..13de9f9ccdc8 > --- /dev/null > +++ b/drivers/media/i2c/ov01a10.c > @@ -0,0 +1,906 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (c) 2020-2021 Intel Corporation. > + > +#include <asm/unaligned.h> > + > +#include <linux/acpi.h> > +#include <linux/i2c.h> > +#include <linux/module.h> > +#include <linux/pm_runtime.h> > +#include <media/v4l2-ctrls.h> > +#include <media/v4l2-device.h> > +#include <media/v4l2-event.h> > +#include <media/v4l2-fwnode.h> > + > +#define OV01A10_LINK_FREQ_400MHZ 400000000ULL > +#define OV01A10_SCLK 40000000LL > +#define OV01A10_MCLK 19200000 > +#define OV01A10_DATA_LANES 1 > +#define OV01A10_RGB_DEPTH 10 > + > +#define OV01A10_REG_CHIP_ID 0x300a > +#define OV01A10_CHIP_ID 0x560141 > + > +#define OV01A10_REG_MODE_SELECT 0x0100 > +#define OV01A10_MODE_STANDBY 0x00 > +#define OV01A10_MODE_STREAMING 0x01 > + > +/* vertical timings */ > +#define OV01A10_REG_VTS 0x380e > +#define OV01A10_VTS_DEF 0x0380 > +#define OV01A10_VTS_MIN 0x0380 > +#define OV01A10_VTS_MAX 0xffff > + > +/* exposure controls */ > +#define OV01A10_REG_EXPOSURE 0x3501 > +#define OV01A10_EXPOSURE_MIN 4 > +#define OV01A10_EXPOSURE_MAX_MARGIN 8 > +#define OV01A10_EXPOSURE_STEP 1 > + > +/* analog gain controls */ > +#define OV01A10_REG_ANALOG_GAIN 0x3508 > +#define OV01A10_ANAL_GAIN_MIN 0x100 > +#define OV01A10_ANAL_GAIN_MAX 0xffff > +#define OV01A10_ANAL_GAIN_STEP 1 > + > +/* digital gain controls */ > +#define OV01A10_REG_DIGILAL_GAIN_B 0x350A > +#define OV01A10_REG_DIGITAL_GAIN_GB 0x3510 > +#define OV01A10_REG_DIGITAL_GAIN_GR 0x3513 > +#define OV01A10_REG_DIGITAL_GAIN_R 0x3516 > +#define OV01A10_DGTL_GAIN_MIN 0 > +#define OV01A10_DGTL_GAIN_MAX 0x3ffff > +#define OV01A10_DGTL_GAIN_STEP 1 > +#define OV01A10_DGTL_GAIN_DEFAULT 1024 > + > +/* test pattern control */ > +#define OV01A10_REG_TEST_PATTERN 0x4503 > +#define OV01A10_TEST_PATTERN_ENABLE BIT(7) > +#define OV01A10_TEST_PATTERN_BAR_SHIFT 0 > + > +enum { > + OV01A10_LINK_FREQ_400MHZ_INDEX, > +}; > + > +struct ov01a10_reg { > + u16 address; > + u8 val; > +}; > + > +struct ov01a10_reg_list { > + u32 num_of_regs; > + const struct ov01a10_reg *regs; > +}; > + > +struct ov01a10_link_freq_config { > + const struct ov01a10_reg_list reg_list; > +}; > + > +struct ov01a10_mode { > + u32 width; > + u32 height; > + u32 hts; > + u32 vts_def; > + u32 vts_min; > + u32 link_freq_index; > + > + const struct ov01a10_reg_list reg_list; > +}; > + > +static const struct ov01a10_reg mipi_data_rate_720mbps[] = { > +}; > + > +static const struct ov01a10_reg sensor_1280x800_setting[] = { > + {0x0103, 0x01}, > + {0x0302, 0x00}, > + {0x0303, 0x06}, > + {0x0304, 0x01}, > + {0x0305, 0xe0}, > + {0x0306, 0x00}, > + {0x0308, 0x01}, > + {0x0309, 0x00}, > + {0x030c, 0x01}, > + {0x0322, 0x01}, > + {0x0323, 0x06}, > + {0x0324, 0x01}, > + {0x0325, 0x68}, > + {0x3002, 0xa1}, > + {0x301e, 0xf0}, > + {0x3022, 0x01}, > + {0x3501, 0x03}, > + {0x3502, 0x78}, > + {0x3504, 0x0c}, > + {0x3508, 0x01}, > + {0x3509, 0x00}, > + {0x3601, 0xc0}, > + {0x3603, 0x71}, > + {0x3610, 0x68}, > + {0x3611, 0x86}, > + {0x3640, 0x10}, > + {0x3641, 0x80}, > + {0x3642, 0xdc}, > + {0x3646, 0x55}, > + {0x3647, 0x57}, > + {0x364b, 0x00}, > + {0x3653, 0x10}, > + {0x3655, 0x00}, > + {0x3656, 0x00}, > + {0x365f, 0x0f}, > + {0x3661, 0x45}, > + {0x3662, 0x24}, > + {0x3663, 0x11}, > + {0x3664, 0x07}, > + {0x3709, 0x34}, > + {0x370b, 0x6f}, > + {0x3714, 0x22}, > + {0x371b, 0x27}, > + {0x371c, 0x67}, > + {0x371d, 0xa7}, > + {0x371e, 0xe7}, > + {0x3730, 0x81}, > + {0x3733, 0x10}, > + {0x3734, 0x40}, > + {0x3737, 0x04}, > + {0x3739, 0x1c}, > + {0x3767, 0x00}, > + {0x376c, 0x81}, > + {0x3772, 0x14}, > + {0x37c2, 0x04}, > + {0x37d8, 0x03}, > + {0x37d9, 0x0c}, > + {0x37e0, 0x00}, > + {0x37e1, 0x08}, > + {0x37e2, 0x10}, > + {0x37e3, 0x04}, > + {0x37e4, 0x04}, > + {0x37e5, 0x03}, > + {0x37e6, 0x04}, > + {0x3800, 0x00}, > + {0x3801, 0x00}, > + {0x3802, 0x00}, > + {0x3803, 0x00}, > + {0x3804, 0x05}, > + {0x3805, 0x0f}, > + {0x3806, 0x03}, > + {0x3807, 0x2f}, > + {0x3808, 0x05}, > + {0x3809, 0x00}, > + {0x380a, 0x03}, > + {0x380b, 0x20}, > + {0x380c, 0x02}, > + {0x380d, 0xe8}, > + {0x380e, 0x03}, > + {0x380f, 0x80}, > + {0x3810, 0x00}, > + {0x3811, 0x09}, > + {0x3812, 0x00}, > + {0x3813, 0x08}, > + {0x3814, 0x01}, > + {0x3815, 0x01}, > + {0x3816, 0x01}, > + {0x3817, 0x01}, > + {0x3820, 0xa8}, > + {0x3822, 0x13}, > + {0x3832, 0x28}, > + {0x3833, 0x10}, > + {0x3b00, 0x00}, > + {0x3c80, 0x00}, > + {0x3c88, 0x02}, > + {0x3c8c, 0x07}, > + {0x3c8d, 0x40}, > + {0x3cc7, 0x80}, > + {0x4000, 0xc3}, > + {0x4001, 0xe0}, > + {0x4003, 0x40}, > + {0x4008, 0x02}, > + {0x4009, 0x19}, > + {0x400a, 0x01}, > + {0x400b, 0x6c}, > + {0x4011, 0x00}, > + {0x4041, 0x00}, > + {0x4300, 0xff}, > + {0x4301, 0x00}, > + {0x4302, 0x0f}, > + {0x4503, 0x00}, > + {0x4601, 0x50}, > + {0x4800, 0x64}, > + {0x481f, 0x34}, > + {0x4825, 0x33}, > + {0x4837, 0x11}, > + {0x4881, 0x40}, > + {0x4883, 0x01}, > + {0x4890, 0x00}, > + {0x4901, 0x00}, > + {0x4902, 0x00}, > + {0x4b00, 0x2a}, > + {0x4b0d, 0x00}, > + {0x450a, 0x04}, > + {0x450b, 0x00}, > + {0x5000, 0x65}, > + {0x5200, 0x18}, > + {0x5004, 0x00}, > + {0x5080, 0x40}, > + {0x0305, 0xf4}, > + {0x0325, 0xc2}, > +}; > + > +static const char * const ov01a10_test_pattern_menu[] = { > + "Disabled", > + "Color Bar", > + "Top-Bottom Darker Color Bar", > + "Right-Left Darker Color Bar", > + "Color Bar type 4", > +}; > + > +static const s64 link_freq_menu_items[] = { > + OV01A10_LINK_FREQ_400MHZ, > +}; > + > +static const struct ov01a10_link_freq_config link_freq_configs[] = { > + [OV01A10_LINK_FREQ_400MHZ_INDEX] = { > + .reg_list = { > + .num_of_regs = ARRAY_SIZE(mipi_data_rate_720mbps), > + .regs = mipi_data_rate_720mbps, > + } > + }, > +}; > + > +static const struct ov01a10_mode supported_modes[] = { > + { > + .width = 1280, > + .height = 800, > + .hts = 1488, > + .vts_def = OV01A10_VTS_DEF, > + .vts_min = OV01A10_VTS_MIN, > + .reg_list = { > + .num_of_regs = ARRAY_SIZE(sensor_1280x800_setting), > + .regs = sensor_1280x800_setting, > + }, > + .link_freq_index = OV01A10_LINK_FREQ_400MHZ_INDEX, > + }, > +}; > + > +struct ov01a10 { > + struct v4l2_subdev sd; > + struct media_pad pad; > + struct v4l2_ctrl_handler ctrl_handler; > + > + /* v4l2 controls */ > + struct v4l2_ctrl *link_freq; > + struct v4l2_ctrl *pixel_rate; > + struct v4l2_ctrl *vblank; > + struct v4l2_ctrl *hblank; > + struct v4l2_ctrl *exposure; > + > + const struct ov01a10_mode *cur_mode; > + > + /* serialize asynchronous callbacks */ > + struct mutex mutex; > + > + /* streaming state */ > + bool streaming; > +}; > + > +static inline struct ov01a10 *to_ov01a10(struct v4l2_subdev *subdev) > +{ > + return container_of(subdev, struct ov01a10, sd); > +} > + > +static int ov01a10_read_reg(struct ov01a10 *ov01a10, u16 reg, u16 len, u32 *val) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + struct i2c_msg msgs[2]; > + u8 addr_buf[2]; > + u8 data_buf[4] = {0}; > + int ret = 0; > + > + if (len > sizeof(data_buf)) > + return -EINVAL; > + > + put_unaligned_be16(reg, addr_buf); > + msgs[0].addr = client->addr; > + msgs[0].flags = 0; > + msgs[0].len = sizeof(addr_buf); > + msgs[0].buf = addr_buf; > + msgs[1].addr = client->addr; > + msgs[1].flags = I2C_M_RD; > + msgs[1].len = len; > + msgs[1].buf = &data_buf[sizeof(data_buf) - len]; > + > + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); > + > + if (ret != ARRAY_SIZE(msgs)) > + return ret < 0 ? ret : -EIO; > + > + *val = get_unaligned_be32(data_buf); > + > + return 0; > +} > + > +static int ov01a10_write_reg(struct ov01a10 *ov01a10, u16 reg, u16 len, u32 val) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + u8 buf[6]; > + int ret = 0; > + > + if (len > 4) > + return -EINVAL; > + > + put_unaligned_be16(reg, buf); > + put_unaligned_be32(val << 8 * (4 - len), buf + 2); > + > + ret = i2c_master_send(client, buf, len + 2); > + if (ret != len + 2) > + return ret < 0 ? ret : -EIO; > + > + return 0; > +} > + > +static int ov01a10_write_reg_list(struct ov01a10 *ov01a10, > + const struct ov01a10_reg_list *r_list) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + unsigned int i; > + int ret = 0; > + > + for (i = 0; i < r_list->num_of_regs; i++) { > + ret = ov01a10_write_reg(ov01a10, r_list->regs[i].address, 1, > + r_list->regs[i].val); > + if (ret) { > + dev_err_ratelimited(&client->dev, > + "write reg 0x%4.4x return err = %d", > + r_list->regs[i].address, ret); > + return ret; > + } > + } > + > + return 0; > +} > + > +static int ov01a10_update_digital_gain(struct ov01a10 *ov01a10, u32 d_gain) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + u32 real = d_gain << 6; > + int ret = 0; > + > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGILAL_GAIN_B, 3, real); > + if (ret) { > + dev_err(&client->dev, "failed to set OV01A10_REG_DIGITAL_GAIN_B"); > + return ret; > + } > + > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_GB, 3, real); > + if (ret) { > + dev_err(&client->dev, "failed to set OV01A10_REG_DIGITAL_GAIN_GB"); > + return ret; > + } > + > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_GR, 3, real); > + if (ret) { > + dev_err(&client->dev, "failed to set OV01A10_REG_DIGITAL_GAIN_GR"); > + return ret; > + } > + > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_R, 3, real); > + if (ret) { > + dev_err(&client->dev, "failed to set OV01A10_REG_DIGITAL_GAIN_R"); > + return ret; > + } > + > + return ret; > +} > + > +static int ov01a10_test_pattern(struct ov01a10 *ov01a10, u32 pattern) > +{ > + if (pattern) > + pattern = (pattern - 1) << OV01A10_TEST_PATTERN_BAR_SHIFT | > + OV01A10_TEST_PATTERN_ENABLE; > + > + return ov01a10_write_reg(ov01a10, OV01A10_REG_TEST_PATTERN, 1, pattern); > +} > + > +static int ov01a10_set_ctrl(struct v4l2_ctrl *ctrl) > +{ > + struct ov01a10 *ov01a10 = container_of(ctrl->handler, > + struct ov01a10, ctrl_handler); > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + s64 exposure_max; > + int ret = 0; > + > + if (ctrl->id == V4L2_CID_VBLANK) { > + exposure_max = ov01a10->cur_mode->height + ctrl->val - > + OV01A10_EXPOSURE_MAX_MARGIN; > + __v4l2_ctrl_modify_range(ov01a10->exposure, > + ov01a10->exposure->minimum, > + exposure_max, ov01a10->exposure->step, > + exposure_max); > + } > + > + if (!pm_runtime_get_if_in_use(&client->dev)) > + return 0; > + > + switch (ctrl->id) { > + case V4L2_CID_ANALOGUE_GAIN: > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_ANALOG_GAIN, 2, > + ctrl->val); > + break; > + > + case V4L2_CID_DIGITAL_GAIN: > + ret = ov01a10_update_digital_gain(ov01a10, ctrl->val); > + break; > + > + case V4L2_CID_EXPOSURE: > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_EXPOSURE, 2, > + ctrl->val); > + break; > + > + case V4L2_CID_VBLANK: > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_VTS, 2, > + ov01a10->cur_mode->height + ctrl->val); > + break; > + > + case V4L2_CID_TEST_PATTERN: > + ret = ov01a10_test_pattern(ov01a10, ctrl->val); > + break; > + > + default: > + ret = -EINVAL; > + break; > + } > + > + pm_runtime_put(&client->dev); > + > + return ret; > +} > + > +static const struct v4l2_ctrl_ops ov01a10_ctrl_ops = { > + .s_ctrl = ov01a10_set_ctrl, > +}; > + > +static int ov01a10_init_controls(struct ov01a10 *ov01a10) > +{ > + struct v4l2_ctrl_handler *ctrl_hdlr; > + const struct ov01a10_mode *cur_mode; > + s64 exposure_max, h_blank; > + u32 vblank_min, vblank_max, vblank_default; > + int size; > + int ret = 0; > + > + ctrl_hdlr = &ov01a10->ctrl_handler; > + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); > + if (ret) > + return ret; > + > + ctrl_hdlr->lock = &ov01a10->mutex; > + cur_mode = ov01a10->cur_mode; > + size = ARRAY_SIZE(link_freq_menu_items); > + > + ov01a10->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, > + &ov01a10_ctrl_ops, > + V4L2_CID_LINK_FREQ, > + size - 1, 0, > + link_freq_menu_items); > + if (ov01a10->link_freq) > + ov01a10->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; > + > + ov01a10->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, > + V4L2_CID_PIXEL_RATE, 0, > + OV01A10_SCLK, 1, OV01A10_SCLK); > + > + vblank_min = cur_mode->vts_min - cur_mode->height; > + vblank_max = OV01A10_VTS_MAX - cur_mode->height; > + vblank_default = cur_mode->vts_def - cur_mode->height; > + ov01a10->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, > + V4L2_CID_VBLANK, vblank_min, > + vblank_max, 1, vblank_default); > + > + h_blank = cur_mode->hts - cur_mode->width; > + ov01a10->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, > + V4L2_CID_HBLANK, h_blank, h_blank, > + 1, h_blank); > + if (ov01a10->hblank) > + ov01a10->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; > + > + v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, > + OV01A10_ANAL_GAIN_MIN, OV01A10_ANAL_GAIN_MAX, > + OV01A10_ANAL_GAIN_STEP, OV01A10_ANAL_GAIN_MIN); > + v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_DIGITAL_GAIN, > + OV01A10_DGTL_GAIN_MIN, OV01A10_DGTL_GAIN_MAX, > + OV01A10_DGTL_GAIN_STEP, OV01A10_DGTL_GAIN_DEFAULT); > + exposure_max = cur_mode->vts_def - OV01A10_EXPOSURE_MAX_MARGIN; > + ov01a10->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, > + V4L2_CID_EXPOSURE, > + OV01A10_EXPOSURE_MIN, > + exposure_max, > + OV01A10_EXPOSURE_STEP, > + exposure_max); > + v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov01a10_ctrl_ops, > + V4L2_CID_TEST_PATTERN, > + ARRAY_SIZE(ov01a10_test_pattern_menu) - 1, > + 0, 0, ov01a10_test_pattern_menu); > + if (ctrl_hdlr->error) > + return ctrl_hdlr->error; > + > + ov01a10->sd.ctrl_handler = ctrl_hdlr; > + > + return 0; > +} > + > +static void ov01a10_update_pad_format(const struct ov01a10_mode *mode, > + struct v4l2_mbus_framefmt *fmt) > +{ > + fmt->width = mode->width; > + fmt->height = mode->height; > + fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; > + fmt->field = V4L2_FIELD_NONE; > +} > + > +static int ov01a10_start_streaming(struct ov01a10 *ov01a10) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + const struct ov01a10_reg_list *reg_list; > + int link_freq_index; > + int ret = 0; > + > + link_freq_index = ov01a10->cur_mode->link_freq_index; > + reg_list = &link_freq_configs[link_freq_index].reg_list; > + ret = ov01a10_write_reg_list(ov01a10, reg_list); > + if (ret) { > + dev_err(&client->dev, "failed to set plls\n"); > + return ret; > + } > + > + reg_list = &ov01a10->cur_mode->reg_list; > + ret = ov01a10_write_reg_list(ov01a10, reg_list); > + if (ret) { > + dev_err(&client->dev, "failed to set mode\n"); > + return ret; > + } > + > + ret = __v4l2_ctrl_handler_setup(ov01a10->sd.ctrl_handler); > + if (ret) > + return ret; > + > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_MODE_SELECT, 1, > + OV01A10_MODE_STREAMING); > + if (ret) > + dev_err(&client->dev, "failed to start streaming\n"); > + > + return ret; > +} > + > +static void ov01a10_stop_streaming(struct ov01a10 *ov01a10) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + int ret = 0; > + > + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_MODE_SELECT, 1, > + OV01A10_MODE_STANDBY); > + if (ret) > + dev_err(&client->dev, "failed to stop streaming"); > + > +} > + > +static int ov01a10_set_stream(struct v4l2_subdev *sd, int enable) > +{ > + struct ov01a10 *ov01a10 = to_ov01a10(sd); > + struct i2c_client *client = v4l2_get_subdevdata(sd); > + int ret = 0; > + > + if (ov01a10->streaming == enable) > + return 0; > + > + mutex_lock(&ov01a10->mutex); > + if (enable) { > + ret = pm_runtime_get_sync(&client->dev); > + if (ret < 0) { > + pm_runtime_put_noidle(&client->dev); > + mutex_unlock(&ov01a10->mutex); > + return ret; > + } > + > + ret = ov01a10_start_streaming(ov01a10); > + if (ret) { > + enable = 0; > + ov01a10_stop_streaming(ov01a10); > + pm_runtime_put(&client->dev); > + } > + } else { > + ov01a10_stop_streaming(ov01a10); > + pm_runtime_put(&client->dev); > + } > + > + ov01a10->streaming = enable; > + mutex_unlock(&ov01a10->mutex); > + > + return ret; > +} > + > +static int __maybe_unused ov01a10_suspend(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > + struct ov01a10 *ov01a10 = to_ov01a10(sd); > + > + mutex_lock(&ov01a10->mutex); > + if (ov01a10->streaming) > + ov01a10_stop_streaming(ov01a10); > + > + mutex_unlock(&ov01a10->mutex); > + > + return 0; > +} > + > +static int __maybe_unused ov01a10_resume(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > + struct ov01a10 *ov01a10 = to_ov01a10(sd); > + int ret = 0; > + > + mutex_lock(&ov01a10->mutex); > + if (!ov01a10->streaming) > + goto exit; > + > + ret = ov01a10_start_streaming(ov01a10); > + if (ret) { > + ov01a10->streaming = false; > + ov01a10_stop_streaming(ov01a10); > + } > + > +exit: > + mutex_unlock(&ov01a10->mutex); > + > + return ret; > +} > + > +static int ov01a10_set_format(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_format *fmt) > +{ > + struct ov01a10 *ov01a10 = to_ov01a10(sd); > + const struct ov01a10_mode *mode; > + s32 vblank_def, h_blank; > + > + mode = v4l2_find_nearest_size(supported_modes, > + ARRAY_SIZE(supported_modes), width, > + height, fmt->format.width, > + fmt->format.height); > + > + mutex_lock(&ov01a10->mutex); > + ov01a10_update_pad_format(mode, &fmt->format); > + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { > + *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format; > + } else { > + ov01a10->cur_mode = mode; > + __v4l2_ctrl_s_ctrl(ov01a10->link_freq, mode->link_freq_index); > + __v4l2_ctrl_s_ctrl_int64(ov01a10->pixel_rate, OV01A10_SCLK); > + > + vblank_def = mode->vts_def - mode->height; > + __v4l2_ctrl_modify_range(ov01a10->vblank, > + mode->vts_min - mode->height, > + OV01A10_VTS_MAX - mode->height, 1, > + vblank_def); > + __v4l2_ctrl_s_ctrl(ov01a10->vblank, vblank_def); > + h_blank = mode->hts - mode->width; > + __v4l2_ctrl_modify_range(ov01a10->hblank, h_blank, h_blank, 1, > + h_blank); > + } > + mutex_unlock(&ov01a10->mutex); > + > + return 0; > +} > + > +static int ov01a10_get_format(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_format *fmt) > +{ > + struct ov01a10 *ov01a10 = to_ov01a10(sd); > + > + mutex_lock(&ov01a10->mutex); > + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) > + fmt->format = *v4l2_subdev_get_try_format(&ov01a10->sd, > + sd_state, fmt->pad); > + else > + ov01a10_update_pad_format(ov01a10->cur_mode, &fmt->format); > + > + mutex_unlock(&ov01a10->mutex); > + > + return 0; > +} > + > +static int ov01a10_enum_mbus_code(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_mbus_code_enum *code) > +{ > + if (code->index > 0) > + return -EINVAL; > + > + code->code = MEDIA_BUS_FMT_SBGGR10_1X10; > + > + return 0; > +} > + > +static int ov01a10_enum_frame_size(struct v4l2_subdev *sd, > + struct v4l2_subdev_state *sd_state, > + struct v4l2_subdev_frame_size_enum *fse) > +{ > + if (fse->index >= ARRAY_SIZE(supported_modes)) > + return -EINVAL; > + > + if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10) > + return -EINVAL; > + > + fse->min_width = supported_modes[fse->index].width; > + fse->max_width = fse->min_width; > + fse->min_height = supported_modes[fse->index].height; > + fse->max_height = fse->min_height; > + > + return 0; > +} > + > +static int ov01a10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) > +{ > + struct ov01a10 *ov01a10 = to_ov01a10(sd); > + > + mutex_lock(&ov01a10->mutex); > + ov01a10_update_pad_format(&supported_modes[0], > + v4l2_subdev_get_try_format(sd, fh->state, 0)); > + mutex_unlock(&ov01a10->mutex); > + > + return 0; > +} > + > +static const struct v4l2_subdev_core_ops ov01a10_core_ops = { > + .log_status = v4l2_ctrl_subdev_log_status, > + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, > + .unsubscribe_event = v4l2_event_subdev_unsubscribe, > +}; > + > +static const struct v4l2_subdev_video_ops ov01a10_video_ops = { > + .s_stream = ov01a10_set_stream, > +}; > + > +static const struct v4l2_subdev_pad_ops ov01a10_pad_ops = { > + .set_fmt = ov01a10_set_format, > + .get_fmt = ov01a10_get_format, > + .enum_mbus_code = ov01a10_enum_mbus_code, > + .enum_frame_size = ov01a10_enum_frame_size, > +}; > + > +static const struct v4l2_subdev_ops ov01a10_subdev_ops = { > + .core = &ov01a10_core_ops, > + .video = &ov01a10_video_ops, > + .pad = &ov01a10_pad_ops, > +}; > + > +static const struct media_entity_operations ov01a10_subdev_entity_ops = { > + .link_validate = v4l2_subdev_link_validate, > +}; > + > +static const struct v4l2_subdev_internal_ops ov01a10_internal_ops = { > + .open = ov01a10_open, > +}; > + > +static int ov01a10_identify_module(struct ov01a10 *ov01a10) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); > + int ret; > + u32 val; > + > + ret = ov01a10_read_reg(ov01a10, OV01A10_REG_CHIP_ID, 3, &val); > + if (ret) > + return ret; > + > + if (val != OV01A10_CHIP_ID) { > + dev_err(&client->dev, "chip id mismatch: %x!=%x\n", > + OV01A10_CHIP_ID, val); > + return -EIO; > + } > + > + return 0; > +} > + > +static void ov01a10_remove(struct i2c_client *client) > +{ > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > + struct ov01a10 *ov01a10 = to_ov01a10(sd); > + > + v4l2_async_unregister_subdev(sd); > + media_entity_cleanup(&sd->entity); > + v4l2_ctrl_handler_free(sd->ctrl_handler); > + > + pm_runtime_disable(&client->dev); > + mutex_destroy(&ov01a10->mutex); > +} > + > +static int ov01a10_probe(struct i2c_client *client) > +{ > + struct device *dev = &client->dev; > + struct ov01a10 *ov01a10; > + int ret = 0; > + > + ov01a10 = devm_kzalloc(dev, sizeof(*ov01a10), GFP_KERNEL); > + if (!ov01a10) > + return -ENOMEM; > + > + v4l2_i2c_subdev_init(&ov01a10->sd, client, &ov01a10_subdev_ops); > + > + ret = ov01a10_identify_module(ov01a10); > + if (ret) > + return dev_err_probe(dev, ret, > + "failed to find sensor\n"); > + > + mutex_init(&ov01a10->mutex); > + ov01a10->cur_mode = &supported_modes[0]; > + > + ret = ov01a10_init_controls(ov01a10); > + if (ret) { > + dev_err(dev, "failed to init controls: %d\n", ret); > + goto err_mutex_destroy; > + } > + > + ov01a10->sd.internal_ops = &ov01a10_internal_ops; > + ov01a10->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | > + V4L2_SUBDEV_FL_HAS_EVENTS; > + ov01a10->sd.entity.ops = &ov01a10_subdev_entity_ops; > + ov01a10->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; > + ov01a10->pad.flags = MEDIA_PAD_FL_SOURCE; > + > + ret = media_entity_pads_init(&ov01a10->sd.entity, 1, &ov01a10->pad); > + if (ret) { > + dev_err(dev, "failed to init entity pads: %d\n", ret); > + goto err_handler_free; > + } > + > + ret = v4l2_async_register_subdev_sensor(&ov01a10->sd); > + if (ret < 0) { > + dev_err(dev, "failed to register subdev: %d\n", > + ret); > + goto err_media_entity_cleanup; > + } > + > + pm_runtime_enable(dev); > + pm_runtime_idle(dev); > + > + return 0; > + > +err_media_entity_cleanup: > + media_entity_cleanup(&ov01a10->sd.entity); > + > +err_handler_free: > + v4l2_ctrl_handler_free(ov01a10->sd.ctrl_handler); > + > +err_mutex_destroy: > + mutex_destroy(&ov01a10->mutex); > + > + return ret; > +} > + > +static const struct dev_pm_ops ov01a10_pm_ops = { > + SET_SYSTEM_SLEEP_PM_OPS(ov01a10_suspend, ov01a10_resume) > +}; > + > +static const struct acpi_device_id ov01a10_acpi_ids[] = { > + {"OVTI01A0"}, > + {} > +}; > + > +MODULE_DEVICE_TABLE(acpi, ov01a10_acpi_ids); > + > +static struct i2c_driver ov01a10_i2c_driver = { > + .driver = { > + .name = "ov01a10", > + .pm = &ov01a10_pm_ops, > + .acpi_match_table = ACPI_PTR(ov01a10_acpi_ids), > + }, > + .probe_new = ov01a10_probe, > + .remove = ov01a10_remove, > +}; > + > +module_i2c_driver(ov01a10_i2c_driver); > + > +MODULE_AUTHOR("Bingbu Cao <bingbu.cao@xxxxxxxxx>"); > +MODULE_AUTHOR("Wang Yating <yating.wang@xxxxxxxxx>"); > +MODULE_DESCRIPTION("OmniVision OV01A10 sensor driver"); > +MODULE_LICENSE("GPL v2"); > -- > 2.7.4 >
