// SPDX-License-Identifier: GPL-2.0 /* * ov5695 driver * * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd. * * V0.0X01.0X01 add poweron function. * V0.0X01.0X02 add enum_frame_interval function. * V0.0X01.0X03 add quick stream on/off * V0.0X01.0X04 add function g_mbus_config */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x04) #ifndef V4L2_CID_DIGITAL_GAIN #define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN #endif /* 45Mhz * 4 Binning */ #define OV5695_PIXEL_RATE (45 * 1000 * 1000 * 4) #define OV5695_XVCLK_FREQ 24000000 #define CHIP_ID 0x005695 #define OV5695_REG_CHIP_ID 0x300a #define OV5695_REG_CTRL_MODE 0x0100 #define OV5695_MODE_SW_STANDBY 0x0 #define OV5695_MODE_STREAMING BIT(0) #define OV5695_REG_EXPOSURE 0x3500 #define OV5695_EXPOSURE_MIN 4 #define OV5695_EXPOSURE_STEP 1 #define OV5695_VTS_MAX 0x7fff #define OV5695_REG_ANALOG_GAIN 0x3509 #define ANALOG_GAIN_MIN 0x10 #define ANALOG_GAIN_MAX 0xf8 #define ANALOG_GAIN_STEP 1 #define ANALOG_GAIN_DEFAULT 0xf8 #define OV5695_REG_DIGI_GAIN_H 0x350a #define OV5695_REG_DIGI_GAIN_L 0x350b #define OV5695_DIGI_GAIN_L_MASK 0x3f #define OV5695_DIGI_GAIN_H_SHIFT 6 #define OV5695_DIGI_GAIN_MIN 0 #define OV5695_DIGI_GAIN_MAX (0x4000 - 1) #define OV5695_DIGI_GAIN_STEP 1 #define OV5695_DIGI_GAIN_DEFAULT 1024 #define OV5695_REG_TEST_PATTERN 0x4503 #define OV5695_TEST_PATTERN_ENABLE 0x80 #define OV5695_TEST_PATTERN_DISABLE 0x0 #define OV5695_REG_VTS 0x380e #define REG_NULL 0xFFFF #define OV5695_REG_VALUE_08BIT 1 #define OV5695_REG_VALUE_16BIT 2 #define OV5695_REG_VALUE_24BIT 3 #define OV5695_LANES 2 #define OV5695_BITS_PER_SAMPLE 10 #define I2C_M_WR 0 #define I2C_MSG_MAX 300 #define I2C_DATA_MAX (I2C_MSG_MAX * 3) #define OV5695_NAME "ov5695" static const char * const ov5695_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; #define OV5695_NUM_SUPPLIES ARRAY_SIZE(ov5695_supply_names) struct regval { u16 addr; u8 val; }; struct ov5695_mode { u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; const struct regval *reg_list; }; struct ov5695 { struct i2c_client *client; struct clk *xvclk; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[OV5695_NUM_SUPPLIES]; struct v4l2_subdev subdev; struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *exposure; struct v4l2_ctrl *anal_gain; struct v4l2_ctrl *digi_gain; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *test_pattern; struct mutex mutex; bool streaming; bool power_on; const struct ov5695_mode *cur_mode; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; }; #define to_ov5695(sd) container_of(sd, struct ov5695, subdev) /* * Xclk 24Mhz * Pclk 45Mhz * linelength 672(0x2a0) * framelength 2232(0x8b8) * grabwindow_width 1296 * grabwindow_height 972 * max_framerate 30fps * mipi_datarate per lane 840Mbps */ static const struct regval ov5695_global_regs[] = { {0x0103, 0x01}, {0x0100, 0x00}, {0x0300, 0x04}, {0x0301, 0x00}, {0x0302, 0x69}, {0x0303, 0x00}, {0x0304, 0x00}, {0x0305, 0x01}, {0x0307, 0x00}, {0x030b, 0x00}, {0x030c, 0x00}, {0x030d, 0x1e}, {0x030e, 0x04}, {0x030f, 0x03}, {0x0312, 0x01}, {0x3000, 0x00}, {0x3002, 0xa1}, {0x3008, 0x00}, {0x3010, 0x00}, {0x3022, 0x51}, {0x3106, 0x15}, {0x3107, 0x01}, {0x3108, 0x05}, {0x3500, 0x00}, {0x3501, 0x45}, {0x3502, 0x00}, {0x3503, 0x08}, {0x3504, 0x03}, {0x3505, 0x8c}, {0x3507, 0x03}, {0x3508, 0x00}, {0x3509, 0x10}, {0x350c, 0x00}, {0x350d, 0x80}, {0x3510, 0x00}, {0x3511, 0x02}, {0x3512, 0x00}, {0x3601, 0x55}, {0x3602, 0x58}, {0x3614, 0x30}, {0x3615, 0x77}, {0x3621, 0x08}, {0x3624, 0x40}, {0x3633, 0x0c}, {0x3634, 0x0c}, {0x3635, 0x0c}, {0x3636, 0x0c}, {0x3638, 0x00}, {0x3639, 0x00}, {0x363a, 0x00}, {0x363b, 0x00}, {0x363c, 0xff}, {0x363d, 0xfa}, {0x3650, 0x44}, {0x3651, 0x44}, {0x3652, 0x44}, {0x3653, 0x44}, {0x3654, 0x44}, {0x3655, 0x44}, {0x3656, 0x44}, {0x3657, 0x44}, {0x3660, 0x00}, {0x3661, 0x00}, {0x3662, 0x00}, {0x366a, 0x00}, {0x366e, 0x0c}, {0x3673, 0x04}, {0x3700, 0x14}, {0x3703, 0x0c}, {0x3715, 0x01}, {0x3733, 0x10}, {0x3734, 0x40}, {0x373f, 0xa0}, {0x3765, 0x20}, {0x37a1, 0x1d}, {0x37a8, 0x26}, {0x37ab, 0x14}, {0x37c2, 0x04}, {0x37cb, 0x09}, {0x37cc, 0x13}, {0x37cd, 0x1f}, {0x37ce, 0x1f}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x00}, {0x3804, 0x0a}, {0x3805, 0x3f}, {0x3806, 0x07}, {0x3807, 0xaf}, {0x3808, 0x05}, {0x3809, 0x10}, {0x380a, 0x03}, {0x380b, 0xcc}, {0x380c, 0x02}, {0x380d, 0xa0}, {0x380e, 0x08}, {0x380f, 0xb8}, {0x3810, 0x00}, {0x3811, 0x06}, {0x3812, 0x00}, {0x3813, 0x06}, {0x3814, 0x03}, {0x3815, 0x01}, {0x3816, 0x03}, {0x3817, 0x01}, {0x3818, 0x00}, {0x3819, 0x00}, {0x381a, 0x00}, {0x381b, 0x01}, {0x3820, 0x8b}, {0x3821, 0x01}, {0x3c80, 0x08}, {0x3c82, 0x00}, {0x3c83, 0x00}, {0x3c88, 0x00}, {0x3d85, 0x14}, {0x3f02, 0x08}, {0x3f03, 0x10}, {0x4008, 0x02}, {0x4009, 0x09}, {0x404e, 0x20}, {0x4501, 0x00}, {0x4502, 0x10}, {0x4800, 0x00}, {0x481f, 0x2a}, {0x4837, 0x13}, {0x5000, 0x17}, {0x5780, 0x3e}, {0x5781, 0x0f}, {0x5782, 0x44}, {0x5783, 0x02}, {0x5784, 0x01}, {0x5785, 0x01}, {0x5786, 0x00}, {0x5787, 0x04}, {0x5788, 0x02}, {0x5789, 0x0f}, {0x578a, 0xfd}, {0x578b, 0xf5}, {0x578c, 0xf5}, {0x578d, 0x03}, {0x578e, 0x08}, {0x578f, 0x0c}, {0x5790, 0x08}, {0x5791, 0x06}, {0x5792, 0x00}, {0x5793, 0x52}, {0x5794, 0xa3}, {0x5b00, 0x00}, {0x5b01, 0x1c}, {0x5b02, 0x00}, {0x5b03, 0x7f}, {0x5b05, 0x6c}, {0x5e10, 0xfc}, {0x4010, 0xf1}, {0x3503, 0x08}, {0x3505, 0x8c}, {0x3507, 0x03}, {0x3508, 0x00}, {0x3509, 0xf8}, {REG_NULL, 0x00}, }; /* * Xclk 24Mhz * Pclk 45Mhz * linelength 740(0x2e4) * framelength 2024(0x7e8) * grabwindow_width 2592 * grabwindow_height 1944 * max_framerate 30fps * mipi_datarate per lane 840Mbps */ static const struct regval ov5695_2592x1944_regs[] = { {0x3501, 0x7e}, {0x366e, 0x18}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x04}, {0x3804, 0x0a}, {0x3805, 0x3f}, {0x3806, 0x07}, {0x3807, 0xab}, {0x3808, 0x0a}, {0x3809, 0x20}, {0x380a, 0x07}, {0x380b, 0x98}, {0x380c, 0x02}, {0x380d, 0xe4}, {0x380e, 0x07}, {0x380f, 0xe8}, {0x3811, 0x06}, {0x3813, 0x08}, {0x3814, 0x01}, {0x3816, 0x01}, {0x3817, 0x01}, {0x3820, 0x88}, {0x3821, 0x00}, {0x4501, 0x00}, {0x4008, 0x04}, {0x4009, 0x13}, {REG_NULL, 0x00}, }; /* * Xclk 24Mhz * Pclk 45Mhz * linelength 672(0x2a0) * framelength 2232(0x8b8) * grabwindow_width 1920 * grabwindow_height 1080 * max_framerate 30fps * mipi_datarate per lane 840Mbps */ static const struct regval ov5695_1920x1080_regs[] = { {0x3501, 0x45}, {0x366e, 0x18}, {0x3800, 0x01}, {0x3801, 0x50}, {0x3802, 0x01}, {0x3803, 0xb8}, {0x3804, 0x08}, {0x3805, 0xef}, {0x3806, 0x05}, {0x3807, 0xf7}, {0x3808, 0x07}, {0x3809, 0x80}, {0x380a, 0x04}, {0x380b, 0x38}, {0x380c, 0x02}, {0x380d, 0xa0}, {0x380e, 0x08}, {0x380f, 0xb8}, {0x3811, 0x06}, {0x3813, 0x04}, {0x3814, 0x01}, {0x3816, 0x01}, {0x3817, 0x01}, {0x3820, 0x88}, {0x3821, 0x00}, {0x4501, 0x00}, {0x4008, 0x04}, {0x4009, 0x13}, {REG_NULL, 0x00} }; /* * Xclk 24Mhz * Pclk 45Mhz * linelength 740(0x02e4) * framelength 1012(0x03f4) * grabwindow_width 1296 * grabwindow_height 972 * max_framerate 60fps * mipi_datarate per lane 840Mbps */ static const struct regval ov5695_1296x972_regs[] = { {0x3501, 0x3e}, {0x3611, 0x58}, {0x3706, 0x24}, {0x3714, 0x27}, {0x3716, 0x00}, {0x3717, 0x02}, {0x37c3, 0xf0}, {0x380d, 0xe4}, {0x380e, 0x03}, {0x380f, 0xf4}, {0x3811, 0x00}, {0x5000, 0x13}, {REG_NULL, 0x00} }; /* * Xclk 24Mhz * Pclk 45Mhz * linelength 672(0x2a0) * framelength 2232(0x8b8) * grabwindow_width 1280 * grabwindow_height 720 * max_framerate 30fps * mipi_datarate per lane 840Mbps */ static const struct regval ov5695_1280x720_regs[] = { {0x3501, 0x45}, {0x366e, 0x0c}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x01}, {0x3803, 0x00}, {0x3804, 0x0a}, {0x3805, 0x3f}, {0x3806, 0x06}, {0x3807, 0xaf}, {0x3808, 0x05}, {0x3809, 0x00}, {0x380a, 0x02}, {0x380b, 0xd0}, {0x380c, 0x02}, {0x380d, 0xa0}, {0x380e, 0x08}, {0x380f, 0xb8}, {0x3811, 0x06}, {0x3813, 0x02}, {0x3814, 0x03}, {0x3816, 0x03}, {0x3817, 0x01}, {0x3820, 0x8b}, {0x3821, 0x01}, {0x4501, 0x00}, {0x4008, 0x02}, {0x4009, 0x09}, {REG_NULL, 0x00} }; /* * Xclk 24Mhz * Pclk 45Mhz * linelength 672(0x2a0) * framelength 558(0x22e) * grabwindow_width 640 * grabwindow_height 480 * max_framerate 120fps * mipi_datarate per lane 840Mbps */ static const struct regval ov5695_640x480_regs[] = { {0x3501, 0x22}, {0x366e, 0x0c}, {0x3800, 0x00}, {0x3801, 0x00}, {0x3802, 0x00}, {0x3803, 0x08}, {0x3804, 0x0a}, {0x3805, 0x3f}, {0x3806, 0x07}, {0x3807, 0xa7}, {0x3808, 0x02}, {0x3809, 0x80}, {0x380a, 0x01}, {0x380b, 0xe0}, {0x380c, 0x02}, {0x380d, 0xa0}, {0x380e, 0x02}, {0x380f, 0x2e}, {0x3811, 0x06}, {0x3813, 0x04}, {0x3814, 0x07}, {0x3816, 0x05}, {0x3817, 0x03}, {0x3820, 0x8d}, {0x3821, 0x01}, {0x4501, 0x00}, {0x4008, 0x02}, {0x4009, 0x09}, {REG_NULL, 0x00} }; static const struct ov5695_mode supported_modes[] = { { .width = 2592, .height = 1944, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x0450, .hts_def = 0x02e4 * 4, .vts_def = 0x07e8, .reg_list = ov5695_2592x1944_regs, }, { .width = 1920, .height = 1080, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x0450, .hts_def = 0x02a0 * 4, .vts_def = 0x08b8, .reg_list = ov5695_1920x1080_regs, }, { .width = 1296, .height = 972, .max_fps = { .numerator = 10000, .denominator = 600000, }, .exp_def = 0x03e0, .hts_def = 0x02e4 * 4, .vts_def = 0x03f4, .reg_list = ov5695_1296x972_regs, }, { .width = 1280, .height = 720, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x0450, .hts_def = 0x02a0 * 4, .vts_def = 0x08b8, .reg_list = ov5695_1280x720_regs, }, { .width = 640, .height = 480, .max_fps = { .numerator = 10000, .denominator = 1200000, }, .exp_def = 0x0200, .hts_def = 0x02a0 * 4, .vts_def = 0x022e, .reg_list = ov5695_640x480_regs, }, }; #define OV5695_LINK_FREQ_420MHZ 420000000 static const s64 link_freq_menu_items[] = { OV5695_LINK_FREQ_420MHZ }; static const char * const ov5695_test_pattern_menu[] = { "Disabled", "Vertical Color Bar Type 1", "Vertical Color Bar Type 2", "Vertical Color Bar Type 3", "Vertical Color Bar Type 4" }; /* Write registers up to 4 at a time */ static int ov5695_write_reg(struct i2c_client *client, u16 reg, u32 len, u32 val) { u32 buf_i, val_i; u8 buf[6]; u8 *val_p; __be32 val_be; if (len > 4) return -EINVAL; buf[0] = reg >> 8; buf[1] = reg & 0xff; val_be = cpu_to_be32(val); val_p = (u8 *)&val_be; buf_i = 2; val_i = 4 - len; while (val_i < 4) buf[buf_i++] = val_p[val_i++]; if (i2c_master_send(client, buf, len + 2) != len + 2) return -EIO; return 0; } static int ov5695_write_array(struct i2c_client *client, const struct regval *regs) { u8 *data; u32 i, j = 0, k = 0; int ret = 0; struct i2c_msg *msg; msg = kmalloc((sizeof(struct i2c_msg) * I2C_MSG_MAX), GFP_KERNEL); if (!msg) return -ENOMEM; data = kmalloc((sizeof(unsigned char) * I2C_DATA_MAX), GFP_KERNEL); if (!data) { kfree(msg); return -ENOMEM; } for (i = 0; regs[i].addr != REG_NULL; i++) { (msg + j)->addr = client->addr; (msg + j)->flags = I2C_M_WR; (msg + j)->buf = (data + k); data[k + 0] = (u8)(regs[i].addr >> 8); data[k + 1] = (u8)(regs[i].addr & 0xFF); data[k + 2] = (u8)(regs[i].val & 0xFF); k = k + 3; (msg + j)->len = 3; if (j++ == (I2C_MSG_MAX - 1)) { ret = i2c_transfer(client->adapter, msg, j); if (ret < 0) { kfree(msg); kfree(data); return ret; } j = 0; k = 0; } } if (j != 0) { ret = i2c_transfer(client->adapter, msg, j); if (ret < 0) { kfree(msg); kfree(data); return ret; } } kfree(msg); kfree(data); return 0; } /* Read registers up to 4 at a time */ static int ov5695_read_reg(struct i2c_client *client, u16 reg, unsigned int len, u32 *val) { struct i2c_msg msgs[2]; u8 *data_be_p; __be32 data_be = 0; __be16 reg_addr_be = cpu_to_be16(reg); int ret; if (len > 4 || !len) return -EINVAL; data_be_p = (u8 *)&data_be; /* Write register address */ msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = 2; msgs[0].buf = (u8 *)®_addr_be; /* Read data from register */ msgs[1].addr = client->addr; msgs[1].flags = I2C_M_RD; msgs[1].len = len; msgs[1].buf = &data_be_p[4 - len]; ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (ret != ARRAY_SIZE(msgs)) return -EIO; *val = be32_to_cpu(data_be); return 0; } static int ov5695_get_reso_dist(const struct ov5695_mode *mode, struct v4l2_mbus_framefmt *framefmt) { return abs(mode->width - framefmt->width) + abs(mode->height - framefmt->height); } static const struct ov5695_mode * ov5695_find_best_fit(struct v4l2_subdev_format *fmt) { struct v4l2_mbus_framefmt *framefmt = &fmt->format; int dist; int cur_best_fit = 0; int cur_best_fit_dist = -1; int i; for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { dist = ov5695_get_reso_dist(&supported_modes[i], framefmt); if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) { cur_best_fit_dist = dist; cur_best_fit = i; } } return &supported_modes[cur_best_fit]; } static int ov5695_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct ov5695 *ov5695 = to_ov5695(sd); const struct ov5695_mode *mode; s64 h_blank, vblank_def; mutex_lock(&ov5695->mutex); mode = ov5695_find_best_fit(fmt); fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10; fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.field = V4L2_FIELD_NONE; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; #else mutex_unlock(&ov5695->mutex); return -ENOTTY; #endif } else { ov5695->cur_mode = mode; h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(ov5695->hblank, h_blank, h_blank, 1, h_blank); vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(ov5695->vblank, vblank_def, OV5695_VTS_MAX - mode->height, 1, vblank_def); } mutex_unlock(&ov5695->mutex); return 0; } static int ov5695_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct ov5695 *ov5695 = to_ov5695(sd); const struct ov5695_mode *mode = ov5695->cur_mode; mutex_lock(&ov5695->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); #else mutex_unlock(&ov5695->mutex); return -ENOTTY; #endif } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10; fmt->format.field = V4L2_FIELD_NONE; } mutex_unlock(&ov5695->mutex); return 0; } static int ov5695_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { if (code->index != 0) return -EINVAL; code->code = MEDIA_BUS_FMT_SBGGR10_1X10; return 0; } static int ov5695_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, 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 = supported_modes[fse->index].width; fse->max_height = supported_modes[fse->index].height; fse->min_height = supported_modes[fse->index].height; return 0; } static int ov5695_enable_test_pattern(struct ov5695 *ov5695, u32 pattern) { u32 val; if (pattern) val = (pattern - 1) | OV5695_TEST_PATTERN_ENABLE; else val = OV5695_TEST_PATTERN_DISABLE; return ov5695_write_reg(ov5695->client, OV5695_REG_TEST_PATTERN, OV5695_REG_VALUE_08BIT, val); } static int ov5695_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct ov5695 *ov5695 = to_ov5695(sd); const struct ov5695_mode *mode = ov5695->cur_mode; fi->interval = mode->max_fps; return 0; } static void ov5695_get_module_inf(struct ov5695 *ov5695, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strscpy(inf->base.sensor, OV5695_NAME, sizeof(inf->base.sensor)); strscpy(inf->base.module, ov5695->module_name, sizeof(inf->base.module)); strscpy(inf->base.lens, ov5695->len_name, sizeof(inf->base.lens)); } static long ov5695_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct ov5695 *ov5695 = to_ov5695(sd); long ret = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: ov5695_get_module_inf(ov5695, (struct rkmodule_inf *)arg); break; case RKMODULE_SET_QUICK_STREAM: stream = *((u32 *)arg); if (stream) ret = ov5695_write_reg(ov5695->client, OV5695_REG_CTRL_MODE, OV5695_REG_VALUE_08BIT, OV5695_MODE_STREAMING); else ret = ov5695_write_reg(ov5695->client, OV5695_REG_CTRL_MODE, OV5695_REG_VALUE_08BIT, OV5695_MODE_SW_STANDBY); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #ifdef CONFIG_COMPAT static long ov5695_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; struct rkmodule_awb_cfg *cfg; long ret; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = ov5695_ioctl(sd, cmd, inf); if (!ret) { ret = copy_to_user(up, inf, sizeof(*inf)); if (ret) ret = -EFAULT; } kfree(inf); break; case RKMODULE_AWB_CFG: cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); if (!cfg) { ret = -ENOMEM; return ret; } ret = copy_from_user(cfg, up, sizeof(*cfg)); if (!ret) ret = ov5695_ioctl(sd, cmd, cfg); else ret = -EFAULT; kfree(cfg); break; case RKMODULE_SET_QUICK_STREAM: ret = copy_from_user(&stream, up, sizeof(u32)); if (!ret) ret = ov5695_ioctl(sd, cmd, &stream); else ret = -EFAULT; break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif static int __ov5695_start_stream(struct ov5695 *ov5695) { int ret; ret = ov5695_write_array(ov5695->client, ov5695->cur_mode->reg_list); if (ret) return ret; /* In case these controls are set before streaming */ mutex_unlock(&ov5695->mutex); ret = v4l2_ctrl_handler_setup(&ov5695->ctrl_handler); mutex_lock(&ov5695->mutex); if (ret) return ret; return ov5695_write_reg(ov5695->client, OV5695_REG_CTRL_MODE, OV5695_REG_VALUE_08BIT, OV5695_MODE_STREAMING); } static int __ov5695_stop_stream(struct ov5695 *ov5695) { return ov5695_write_reg(ov5695->client, OV5695_REG_CTRL_MODE, OV5695_REG_VALUE_08BIT, OV5695_MODE_SW_STANDBY); } static int ov5695_s_stream(struct v4l2_subdev *sd, int on) { struct ov5695 *ov5695 = to_ov5695(sd); struct i2c_client *client = ov5695->client; int ret = 0; mutex_lock(&ov5695->mutex); on = !!on; if (on == ov5695->streaming) goto unlock_and_return; if (on) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ret = __ov5695_start_stream(ov5695); if (ret) { v4l2_err(sd, "start stream failed while write regs\n"); pm_runtime_put(&client->dev); goto unlock_and_return; } } else { __ov5695_stop_stream(ov5695); pm_runtime_put(&client->dev); } ov5695->streaming = on; unlock_and_return: mutex_unlock(&ov5695->mutex); return ret; } static int ov5695_s_power(struct v4l2_subdev *sd, int on) { struct ov5695 *ov5695 = to_ov5695(sd); struct i2c_client *client = ov5695->client; int ret = 0; mutex_lock(&ov5695->mutex); /* If the power state is not modified - no work to do. */ if (ov5695->power_on == !!on) goto unlock_and_return; if (on) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ret = ov5695_write_array(ov5695->client, ov5695_global_regs); if (ret) { v4l2_err(sd, "could not set init registers\n"); pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ov5695->power_on = true; } else { pm_runtime_put(&client->dev); ov5695->power_on = false; } unlock_and_return: mutex_unlock(&ov5695->mutex); return ret; } /* Calculate the delay in us by clock rate and clock cycles */ static inline u32 ov5695_cal_delay(u32 cycles) { return DIV_ROUND_UP(cycles, OV5695_XVCLK_FREQ / 1000 / 1000); } static int __ov5695_power_on(struct ov5695 *ov5695) { int ret; u32 delay_us; struct device *dev = &ov5695->client->dev; ret = clk_set_rate(ov5695->xvclk, OV5695_XVCLK_FREQ); if (ret < 0) { dev_err(dev, "Failed to set xvclk rate (24MHz)\n"); return ret; } if (clk_get_rate(ov5695->xvclk) != OV5695_XVCLK_FREQ) dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n"); ret = clk_prepare_enable(ov5695->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } if (!IS_ERR(ov5695->reset_gpio)) gpiod_set_value_cansleep(ov5695->reset_gpio, 1); ret = regulator_bulk_enable(OV5695_NUM_SUPPLIES, ov5695->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } if (!IS_ERR(ov5695->reset_gpio)) gpiod_set_value_cansleep(ov5695->reset_gpio, 0); if (!IS_ERR(ov5695->pwdn_gpio)) gpiod_set_value_cansleep(ov5695->pwdn_gpio, 1); /* 8192 cycles prior to first SCCB transaction */ delay_us = ov5695_cal_delay(8192); usleep_range(delay_us, delay_us * 2); return 0; disable_clk: clk_disable_unprepare(ov5695->xvclk); return ret; } static void __ov5695_power_off(struct ov5695 *ov5695) { if (!IS_ERR(ov5695->pwdn_gpio)) gpiod_set_value_cansleep(ov5695->pwdn_gpio, 0); clk_disable_unprepare(ov5695->xvclk); if (!IS_ERR(ov5695->reset_gpio)) gpiod_set_value_cansleep(ov5695->reset_gpio, 1); regulator_bulk_disable(OV5695_NUM_SUPPLIES, ov5695->supplies); } static int __maybe_unused ov5695_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov5695 *ov5695 = to_ov5695(sd); return __ov5695_power_on(ov5695); } static int __maybe_unused ov5695_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov5695 *ov5695 = to_ov5695(sd); __ov5695_power_off(ov5695); return 0; } #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int ov5695_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct ov5695 *ov5695 = to_ov5695(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0); const struct ov5695_mode *def_mode = &supported_modes[0]; mutex_lock(&ov5695->mutex); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&ov5695->mutex); /* No crop or compose */ return 0; } #endif static int ov5695_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_interval_enum *fie) { if (fie->index >= ARRAY_SIZE(supported_modes)) return -EINVAL; fie->code = MEDIA_BUS_FMT_SBGGR10_1X10; fie->width = supported_modes[fie->index].width; fie->height = supported_modes[fie->index].height; fie->interval = supported_modes[fie->index].max_fps; return 0; } static int ov5695_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad_id, struct v4l2_mbus_config *config) { u32 val = 0; val = 1 << (OV5695_LANES - 1) | V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; config->type = V4L2_MBUS_CSI2_DPHY; config->flags = val; return 0; } static const struct dev_pm_ops ov5695_pm_ops = { SET_RUNTIME_PM_OPS(ov5695_runtime_suspend, ov5695_runtime_resume, NULL) }; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops ov5695_internal_ops = { .open = ov5695_open, }; #endif static const struct v4l2_subdev_core_ops ov5695_core_ops = { .s_power = ov5695_s_power, .ioctl = ov5695_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = ov5695_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops ov5695_video_ops = { .s_stream = ov5695_s_stream, .g_frame_interval = ov5695_g_frame_interval, }; static const struct v4l2_subdev_pad_ops ov5695_pad_ops = { .enum_mbus_code = ov5695_enum_mbus_code, .enum_frame_size = ov5695_enum_frame_sizes, .enum_frame_interval = ov5695_enum_frame_interval, .get_fmt = ov5695_get_fmt, .set_fmt = ov5695_set_fmt, .get_mbus_config = ov5695_g_mbus_config, }; static const struct v4l2_subdev_ops ov5695_subdev_ops = { .core = &ov5695_core_ops, .video = &ov5695_video_ops, .pad = &ov5695_pad_ops, }; static int ov5695_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov5695 *ov5695 = container_of(ctrl->handler, struct ov5695, ctrl_handler); struct i2c_client *client = ov5695->client; s64 max; int ret = 0; /* Propagate change of current control to all related controls */ switch (ctrl->id) { case V4L2_CID_VBLANK: /* Update max exposure while meeting expected vblanking */ max = ov5695->cur_mode->height + ctrl->val - 4; __v4l2_ctrl_modify_range(ov5695->exposure, ov5695->exposure->minimum, max, ov5695->exposure->step, ov5695->exposure->default_value); break; } if (!pm_runtime_get_if_in_use(&client->dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: /* 4 least significant bits of expsoure are fractional part */ ret = ov5695_write_reg(ov5695->client, OV5695_REG_EXPOSURE, OV5695_REG_VALUE_24BIT, ctrl->val << 4); break; case V4L2_CID_ANALOGUE_GAIN: ret = ov5695_write_reg(ov5695->client, OV5695_REG_ANALOG_GAIN, OV5695_REG_VALUE_08BIT, ctrl->val); break; case V4L2_CID_DIGITAL_GAIN: ret = ov5695_write_reg(ov5695->client, OV5695_REG_DIGI_GAIN_L, OV5695_REG_VALUE_08BIT, ctrl->val & OV5695_DIGI_GAIN_L_MASK); ret |= ov5695_write_reg(ov5695->client, OV5695_REG_DIGI_GAIN_H, OV5695_REG_VALUE_08BIT, ctrl->val >> OV5695_DIGI_GAIN_H_SHIFT); break; case V4L2_CID_VBLANK: ret = ov5695_write_reg(ov5695->client, OV5695_REG_VTS, OV5695_REG_VALUE_16BIT, ctrl->val + ov5695->cur_mode->height); break; case V4L2_CID_TEST_PATTERN: ret = ov5695_enable_test_pattern(ov5695, ctrl->val); break; default: dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n", __func__, ctrl->id, ctrl->val); break; } pm_runtime_put(&client->dev); return ret; } static const struct v4l2_ctrl_ops ov5695_ctrl_ops = { .s_ctrl = ov5695_set_ctrl, }; static int ov5695_initialize_controls(struct ov5695 *ov5695) { const struct ov5695_mode *mode; struct v4l2_ctrl_handler *handler; struct v4l2_ctrl *ctrl; s64 exposure_max, vblank_def; u32 h_blank; int ret; handler = &ov5695->ctrl_handler; mode = ov5695->cur_mode; ret = v4l2_ctrl_handler_init(handler, 8); if (ret) return ret; handler->lock = &ov5695->mutex; ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, 0, 0, link_freq_menu_items); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, OV5695_PIXEL_RATE, 1, OV5695_PIXEL_RATE); h_blank = mode->hts_def - mode->width; ov5695->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (ov5695->hblank) ov5695->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; vblank_def = mode->vts_def - mode->height; ov5695->vblank = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops, V4L2_CID_VBLANK, vblank_def, OV5695_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 4; ov5695->exposure = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops, V4L2_CID_EXPOSURE, OV5695_EXPOSURE_MIN, exposure_max, OV5695_EXPOSURE_STEP, mode->exp_def); ov5695->anal_gain = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, ANALOG_GAIN_MIN, ANALOG_GAIN_MAX, ANALOG_GAIN_STEP, ANALOG_GAIN_DEFAULT); /* Digital gain */ ov5695->digi_gain = v4l2_ctrl_new_std(handler, &ov5695_ctrl_ops, V4L2_CID_DIGITAL_GAIN, OV5695_DIGI_GAIN_MIN, OV5695_DIGI_GAIN_MAX, OV5695_DIGI_GAIN_STEP, OV5695_DIGI_GAIN_DEFAULT); ov5695->test_pattern = v4l2_ctrl_new_std_menu_items(handler, &ov5695_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov5695_test_pattern_menu) - 1, 0, 0, ov5695_test_pattern_menu); if (handler->error) { ret = handler->error; dev_err(&ov5695->client->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } ov5695->subdev.ctrl_handler = handler; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int ov5695_check_sensor_id(struct ov5695 *ov5695, struct i2c_client *client) { struct device *dev = &ov5695->client->dev; u32 id = 0; int ret; ret = ov5695_read_reg(client, OV5695_REG_CHIP_ID, OV5695_REG_VALUE_24BIT, &id); if (id != CHIP_ID) { dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret); return -ENODEV; } dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID); return 0; } static int ov5695_configure_regulators(struct ov5695 *ov5695) { int i; for (i = 0; i < OV5695_NUM_SUPPLIES; i++) ov5695->supplies[i].supply = ov5695_supply_names[i]; return devm_regulator_bulk_get(&ov5695->client->dev, OV5695_NUM_SUPPLIES, ov5695->supplies); } static int ov5695_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct ov5695 *ov5695; struct v4l2_subdev *sd; char facing[2]; int ret; dev_info(dev, "driver version: %02x.%02x.%02x", DRIVER_VERSION >> 16, (DRIVER_VERSION & 0xff00) >> 8, DRIVER_VERSION & 0x00ff); ov5695 = devm_kzalloc(dev, sizeof(*ov5695), GFP_KERNEL); if (!ov5695) return -ENOMEM; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &ov5695->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &ov5695->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &ov5695->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &ov5695->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } ov5695->client = client; ov5695->cur_mode = &supported_modes[0]; ov5695->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(ov5695->xvclk)) { dev_err(dev, "Failed to get xvclk\n"); return -EINVAL; } ov5695->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ov5695->reset_gpio)) { dev_warn(dev, "Failed to get reset-gpios\n"); } ov5695->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(ov5695->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios\n"); ret = ov5695_configure_regulators(ov5695); if (ret) { dev_err(dev, "Failed to get power regulators\n"); return ret; } mutex_init(&ov5695->mutex); sd = &ov5695->subdev; v4l2_i2c_subdev_init(sd, client, &ov5695_subdev_ops); ret = ov5695_initialize_controls(ov5695); if (ret) goto err_destroy_mutex; ret = __ov5695_power_on(ov5695); if (ret) goto err_free_handler; ret = ov5695_check_sensor_id(ov5695, client); if (ret) goto err_power_off; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API sd->internal_ops = &ov5695_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; #endif #if defined(CONFIG_MEDIA_CONTROLLER) ov5695->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &ov5695->pad); if (ret < 0) goto err_power_off; #endif memset(facing, 0, sizeof(facing)); if (strcmp(ov5695->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", ov5695->module_index, facing, OV5695_NAME, dev_name(sd->dev)); ret = v4l2_async_register_subdev_sensor_common(sd); if (ret) { dev_err(dev, "v4l2 async register subdev failed\n"); goto err_clean_entity; } pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_idle(dev); return 0; err_clean_entity: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_power_off: __ov5695_power_off(ov5695); err_free_handler: v4l2_ctrl_handler_free(&ov5695->ctrl_handler); err_destroy_mutex: mutex_destroy(&ov5695->mutex); return ret; } static int ov5695_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov5695 *ov5695 = to_ov5695(sd); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(&ov5695->ctrl_handler); mutex_destroy(&ov5695->mutex); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) __ov5695_power_off(ov5695); pm_runtime_set_suspended(&client->dev); return 0; } #if IS_ENABLED(CONFIG_OF) static const struct of_device_id ov5695_of_match[] = { { .compatible = "ovti,ov5695" }, {}, }; MODULE_DEVICE_TABLE(of, ov5695_of_match); #endif static const struct i2c_device_id ov5695_match_id[] = { { "ovti,ov5695", 0 }, { }, }; static struct i2c_driver ov5695_i2c_driver = { .driver = { .name = OV5695_NAME, .pm = &ov5695_pm_ops, .of_match_table = of_match_ptr(ov5695_of_match), }, .probe = &ov5695_probe, .remove = &ov5695_remove, .id_table = ov5695_match_id, }; static int __init sensor_mod_init(void) { return i2c_add_driver(&ov5695_i2c_driver); } static void __exit sensor_mod_exit(void) { i2c_del_driver(&ov5695_i2c_driver); } device_initcall_sync(sensor_mod_init); module_exit(sensor_mod_exit); MODULE_DESCRIPTION("OmniVision ov5695 sensor driver"); MODULE_LICENSE("GPL v2");