From 0827b58dabff5b2ba624e8c776573ddb18172c01 Mon Sep 17 00:00:00 2001 From: Bingbu Cao Date: Sun, 23 Apr 2023 16:06:55 +0800 Subject: [PATCH] media: i2c: add ov01a10 image sensor driver Add v4l2 device driver for OmniVision ov01a10 image sensor, ov01a10 image sensor can deliver 1280x800 resolution BGGR10 images at 60 fps. Signed-off-by: Yating Wang Signed-off-by: Bingbu Cao Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- MAINTAINERS | 7 + drivers/media/i2c/Kconfig | 13 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/ov01a10.c | 1004 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 1025 insertions(+) create mode 100644 drivers/media/i2c/ov01a10.c diff --git a/MAINTAINERS b/MAINTAINERS index 517ce68..c329679 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -15444,6 +15444,13 @@ L: linux-media@vger.kernel.org S: Maintained F: drivers/media/i2c/og01a1b.c +OMNIVISION OV01A10 SENSOR DRIVER +M: Bingbu Cao +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: drivers/media/i2c/ov01a10.c + OMNIVISION OV02A10 SENSOR DRIVER M: Dongchun Zhu L: linux-media@vger.kernel.org diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 256d55b..cf675ac4 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 b44dacf..c743aeb 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o obj-$(CONFIG_VIDEO_MT9V032) += mt9v032.o obj-$(CONFIG_VIDEO_MT9V111) += mt9v111.o obj-$(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 0000000..de5bc19 --- /dev/null +++ b/drivers/media/i2c/ov01a10.c @@ -0,0 +1,1004 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023 Intel Corporation. + */ + +#include + +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define OV01A10_LINK_FREQ_400MHZ 400000000ULL +#define OV01A10_SCLK 40000000LL +#define OV01A10_DATA_LANES 1 + +#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 + +/* pixel array */ +#define OV01A10_PIXEL_ARRAY_WIDTH 1296 +#define OV01A10_PIXEL_ARRAY_HEIGHT 816 +#define OV01A10_ACITVE_WIDTH 1280 +#define OV01A10_ACITVE_HEIGHT 800 + +/* vertical and horizontal timings */ +#define OV01A10_REG_VTS 0x380e +#define OV01A10_VTS_DEF 0x0380 +#define OV01A10_VTS_MIN 0x0380 +#define OV01A10_VTS_MAX 0xffff +#define OV01A10_HTS_DEF 1488 + +/* 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_DIGITAL_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_LINK_FREQ_400MHZ_INDEX 0 + +/* flip and mirror control */ +#define OV01A10_REG_FORMAT1 0x3820 +#define OV01A10_VFLIP_MASK BIT(4) +#define OV01A10_HFLIP_MASK BIT(3) + +/* window offset */ +#define OV01A10_REG_X_WIN 0x3811 +#define OV01A10_REG_Y_WIN 0x3813 + +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[] = { + {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}, +}; + +static const struct ov01a10_reg sensor_1280x800_setting[] = { + {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, 0x08}, + {0x3812, 0x00}, + {0x3813, 0x08}, + {0x3814, 0x01}, + {0x3815, 0x01}, + {0x3816, 0x01}, + {0x3817, 0x01}, + {0x3820, 0xa0}, + {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 = OV01A10_ACITVE_WIDTH, + .height = OV01A10_ACITVE_HEIGHT, + .hts = OV01A10_HTS_DEF, + .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; + + /* 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 err = %d\n", + 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_DIGITAL_GAIN_B, 3, real); + if (ret) { + dev_err(&client->dev, "failed to set DIGITAL_GAIN_B\n"); + return ret; + } + + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_GB, 3, real); + if (ret) { + dev_err(&client->dev, "failed to set DIGITAL_GAIN_GB\n"); + return ret; + } + + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_GR, 3, real); + if (ret) { + dev_err(&client->dev, "failed to set DIGITAL_GAIN_GR\n"); + return ret; + } + + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_R, 3, real); + if (ret) + dev_err(&client->dev, "failed to set DIGITAL_GAIN_R\n"); + + return ret; +} + +static int ov01a10_test_pattern(struct ov01a10 *ov01a10, u32 pattern) +{ + if (!pattern) + return 0; + + pattern = (pattern - 1) | OV01A10_TEST_PATTERN_ENABLE; + + return ov01a10_write_reg(ov01a10, OV01A10_REG_TEST_PATTERN, 1, pattern); +} + +/* for vflip and hflip, use 0x9 as window offset to keep the bayer */ +static int ov01a10_set_hflip(struct ov01a10 *ov01a10, u32 hflip) +{ + int ret; + u32 val, offset; + + offset = hflip ? 0x9 : 0x8; + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_X_WIN, 1, offset); + if (ret) + return ret; + + ret = ov01a10_read_reg(ov01a10, OV01A10_REG_FORMAT1, 1, &val); + if (ret) + return ret; + + val = hflip ? val | FIELD_PREP(OV01A10_HFLIP_MASK, 0x1) : + val & ~OV01A10_HFLIP_MASK; + + return ov01a10_write_reg(ov01a10, OV01A10_REG_FORMAT1, 1, val); +} + +static int ov01a10_set_vflip(struct ov01a10 *ov01a10, u32 vflip) +{ + int ret; + u32 val, offset; + + offset = vflip ? 0x9 : 0x8; + ret = ov01a10_write_reg(ov01a10, OV01A10_REG_Y_WIN, 1, offset); + if (ret) + return ret; + + ret = ov01a10_read_reg(ov01a10, OV01A10_REG_FORMAT1, 1, &val); + if (ret) + return ret; + + val = vflip ? val | FIELD_PREP(OV01A10_VFLIP_MASK, 0x1) : + val & ~OV01A10_VFLIP_MASK; + + return ov01a10_write_reg(ov01a10, OV01A10_REG_FORMAT1, 1, val); +} + +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; + + case V4L2_CID_HFLIP: + ov01a10_set_hflip(ov01a10, ctrl->val); + break; + + case V4L2_CID_VFLIP: + ov01a10_set_vflip(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 i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); + struct v4l2_fwnode_device_properties props; + u32 vblank_min, vblank_max, vblank_default; + struct v4l2_ctrl_handler *ctrl_hdlr; + const struct ov01a10_mode *cur_mode; + s64 exposure_max, h_blank; + int ret = 0; + int size; + + ret = v4l2_fwnode_device_parse(&client->dev, &props); + if (ret) + return ret; + + ctrl_hdlr = &ov01a10->ctrl_handler; + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12); + if (ret) + return ret; + + 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); + + v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_HFLIP, + 0, 1, 1, 0); + v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_VFLIP, + 0, 1, 1, 0); + + ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &ov01a10_ctrl_ops, + &props); + if (ret) + goto fail; + + if (ctrl_hdlr->error) { + ret = ctrl_hdlr->error; + goto fail; + } + + ov01a10->sd.ctrl_handler = ctrl_hdlr; + + return 0; +fail: + v4l2_ctrl_handler_free(ctrl_hdlr); + + return ret; +} + +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; + fmt->colorspace = V4L2_COLORSPACE_RAW; +} + +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\n"); +} + +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); + struct v4l2_subdev_state *state; + int ret = 0; + + state = v4l2_subdev_lock_and_get_active_state(sd); + if (ov01a10->streaming == enable) + goto unlock; + + if (enable) { + ret = pm_runtime_resume_and_get(&client->dev); + if (ret < 0) + goto unlock; + + ret = ov01a10_start_streaming(ov01a10); + if (ret) { + pm_runtime_put(&client->dev); + goto unlock; + } + + goto done; + } + + ov01a10_stop_streaming(ov01a10); + pm_runtime_put(&client->dev); +done: + ov01a10->streaming = enable; +unlock: + v4l2_subdev_unlock_state(state); + + 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); + struct v4l2_subdev_state *state; + + state = v4l2_subdev_lock_and_get_active_state(sd); + if (ov01a10->streaming) + ov01a10_stop_streaming(ov01a10); + + v4l2_subdev_unlock_state(state); + + 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); + struct v4l2_subdev_state *state; + int ret = 0; + + state = v4l2_subdev_lock_and_get_active_state(sd); + if (!ov01a10->streaming) + goto exit; + + ret = ov01a10_start_streaming(ov01a10); + if (ret) { + ov01a10->streaming = false; + ov01a10_stop_streaming(ov01a10); + } + +exit: + v4l2_subdev_unlock_state(state); + + 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; + struct v4l2_mbus_framefmt *format; + s32 vblank_def, h_blank; + + mode = v4l2_find_nearest_size(supported_modes, + ARRAY_SIZE(supported_modes), width, + height, fmt->format.width, + fmt->format.height); + + ov01a10_update_pad_format(mode, &fmt->format); + + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + 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); + } + + format = v4l2_subdev_get_pad_format(sd, sd_state, fmt->stream); + *format = fmt->format; + + return 0; +} + +static int ov01a10_init_cfg(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state) +{ + struct v4l2_subdev_format fmt = { + .which = V4L2_SUBDEV_FORMAT_TRY, + .format = { + .width = OV01A10_ACITVE_WIDTH, + .height = OV01A10_ACITVE_HEIGHT, + }, + }; + + ov01a10_set_format(sd, state, &fmt); + + 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) || + 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_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + struct v4l2_subdev_selection *sel) +{ + if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + + switch (sel->target) { + case V4L2_SEL_TGT_NATIVE_SIZE: + case V4L2_SEL_TGT_CROP_BOUNDS: + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = OV01A10_PIXEL_ARRAY_WIDTH; + sel->r.height = OV01A10_PIXEL_ARRAY_HEIGHT; + return 0; + case V4L2_SEL_TGT_CROP: + case V4L2_SEL_TGT_CROP_DEFAULT: + sel->r.top = (OV01A10_PIXEL_ARRAY_HEIGHT - + OV01A10_ACITVE_HEIGHT) / 2; + sel->r.left = (OV01A10_PIXEL_ARRAY_WIDTH - + OV01A10_ACITVE_WIDTH) / 2; + sel->r.width = OV01A10_ACITVE_WIDTH; + sel->r.height = OV01A10_ACITVE_HEIGHT; + return 0; + } + + return -EINVAL; +} + +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 = { + .init_cfg = ov01a10_init_cfg, + .set_fmt = ov01a10_set_format, + .get_fmt = v4l2_subdev_get_fmt, + .get_selection = ov01a10_get_selection, + .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 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); + + v4l2_async_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(sd->ctrl_handler); + + pm_runtime_disable(&client->dev); +} + +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"); + + ov01a10->cur_mode = &supported_modes[0]; + + ret = ov01a10_init_controls(ov01a10); + if (ret) { + dev_err(dev, "failed to init controls: %d\n", ret); + return ret; + } + + ov01a10->sd.state_lock = ov01a10->ctrl_handler.lock; + 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_subdev_init_finalize(&ov01a10->sd); + if (ret) { + dev_err(dev, "Failed to allocate subdev state: %d\n", ret); + goto err_media_entity_cleanup; + } + + 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); + + return ret; +} + +static const struct dev_pm_ops ov01a10_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(ov01a10_suspend, ov01a10_resume) +}; + +#ifdef CONFIG_ACPI +static const struct acpi_device_id ov01a10_acpi_ids[] = { + { "OVTI01A0" }, + { } +}; + +MODULE_DEVICE_TABLE(acpi, ov01a10_acpi_ids); +#endif + +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 "); +MODULE_AUTHOR("Wang Yating "); +MODULE_DESCRIPTION("OmniVision OV01A10 sensor driver"); +MODULE_LICENSE("GPL"); -- 2.7.4