// SPDX-License-Identifier: GPL-2.0 /* * sc2355 driver * * Copyright (C) 2020 Fuzhou Rockchip Electronics Co., Ltd. * * V0.0X01.0X00 first version,adjust sc2355. * V0.0X01.0X01 add set flip ctrl. * V0.0X01.0X02 1.fixed time limit error * 2.fixed gain conversion function * 3.fixed test pattern error * 4.add quick stream on/off */ //#define DEBUG #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x02) #ifndef V4L2_CID_DIGITAL_GAIN #define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN #endif #define MIPI_FREQ_360M 360000000 //720Mbps/lane #define SC2355_MAX_PIXEL_RATE (MIPI_FREQ_360M * 2 / 10) #define OF_CAMERA_HDR_MODE "rockchip,camera-hdr-mode" #define SC2355_XVCLK_FREQ 24000000 #define CHIP_ID 0xeb2c #define SC2355_REG_CHIP_ID 0x3107 #define SC2355_REG_CTRL_MODE 0x0100 #define SC2355_MODE_SW_STANDBY 0x0 #define SC2355_MODE_STREAMING BIT(0) #define SC2355_EXPOSURE_MIN 1// two lines long exp min #define SC2355_EXPOSURE_STEP 1 #define SC2355_VTS_MAX 0xffff #define SC2355_REG_EXPOSURE 0x3e00 //[3:0] //long frame and normal gain reg #define SC2355_REG_AGAIN 0x3e09 #define SC2355_REG_AGAIN_FINE 0x3e09 #define SC2355_REG_DGAIN 0x3e06 #define SC2355_REG_DGAIN_FINE 0x3e07 #define SC2355_GAIN_MIN 0x100 #define SC2355_GAIN_MAX (128*512) #define SC2355_GAIN_STEP 1 #define SC2355_GAIN_DEFAULT 0x100 #define SC2355_GROUP_HOLD 0x3812 #define SC2355_GROUP_UPDATE_DATA_START 0x00 #define SC2355_GROUP_UPDATE_LAUNCH 0x30 #define SC2355_SOFTWARE_RESET_REG 0x0103 #define SC2355_REG_TEST_PATTERN 0x4501 #define SC2355_TEST_PATTERN_ENABLE 0x08 #define SC2355_REG_VTS 0x320e #define SC2355_FLIP_REG 0x3221 #define SC2355_FLIP_MASK 0x60 #define SC2355_MIRROR_MASK 0x06 #define REG_NULL 0xFFFF #define SC2355_REG_VALUE_08BIT 1 #define SC2355_REG_VALUE_16BIT 2 #define SC2355_REG_VALUE_24BIT 3 #define SC2355_LANES 1 #define LONG_FRAME_MAX_EXP 4297 #define SHORT_FRAME_MAX_EXP 260 #define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default" #define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep" #define SC2355_NAME "sc2355" static const char * const sc2355_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; #define SC2355_NUM_SUPPLIES ARRAY_SIZE(sc2355_supply_names) enum sc2355_max_pad { PAD0, PAD1, PAD2, PAD3, PAD_MAX, }; struct regval { u16 addr; u8 val; }; struct sc2355_mode { u32 bus_fmt; u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; const struct regval *reg_list; u32 hdr_mode; u32 mipi_freq_idx; u32 bpp; u32 vc[PAD_MAX]; }; struct sc2355 { struct i2c_client *client; struct clk *xvclk; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[SC2355_NUM_SUPPLIES]; struct pinctrl *pinctrl; struct pinctrl_state *pins_default; struct pinctrl_state *pins_sleep; 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 v4l2_ctrl *pixel_rate; struct v4l2_ctrl *link_freq; struct mutex mutex; bool streaming; bool power_on; const struct sc2355_mode *cur_mode; u32 cfg_num; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; bool has_init_exp; u32 cur_vts; struct preisp_hdrae_exp_s init_hdrae_exp; }; #define to_sc2355(sd) container_of(sd, struct sc2355, subdev) /* * Xclk 24Mhz linear 640*480 30fps 37.125Mbps/lane */ static const struct regval sc2355_linear10bit_640x480_regs[] = { {0x0103, 0x01}, {0x0100, 0x00}, {0x36e9, 0x80}, {0x36ea, 0x0f}, {0x36eb, 0x24}, {0x36ed, 0x14}, {0x36e9, 0x01}, {0x301f, 0x07}, {0x303f, 0x82}, {0x3200, 0x00}, {0x3201, 0x9c}, {0x3202, 0x00}, {0x3203, 0x74}, {0x3204, 0x05}, {0x3205, 0xab}, {0x3206, 0x04}, {0x3207, 0x43}, {0x3208, 0x02}, {0x3209, 0x80}, {0x320a, 0x01}, {0x320b, 0xe0}, {0x320e, 0x02}, {0x320f, 0x71}, {0x3210, 0x00}, {0x3211, 0x04}, {0x3212, 0x00}, {0x3213, 0x04}, {0x3215, 0x31}, {0x3220, 0x01}, {0x3248, 0x02}, {0x3253, 0x0a}, {0x3301, 0xff}, {0x3302, 0xff}, {0x3303, 0x10}, {0x3306, 0x28}, {0x3307, 0x02}, {0x330a, 0x00}, {0x330b, 0xb0}, {0x3318, 0x02}, {0x3320, 0x06}, {0x3321, 0x02}, {0x3326, 0x12}, {0x3327, 0x0e}, {0x3328, 0x03}, {0x3329, 0x0f}, {0x3364, 0x4f}, {0x33b3, 0x40}, {0x33f9, 0x2c}, {0x33fb, 0x38}, {0x33fc, 0x0f}, {0x33fd, 0x1f}, {0x349f, 0x03}, {0x34a6, 0x01}, {0x34a7, 0x1f}, {0x34a8, 0x40}, {0x34a9, 0x30}, {0x34ab, 0xa6}, {0x34ad, 0xa6}, {0x3622, 0x60}, {0x3625, 0x08}, {0x3630, 0xa8}, {0x3631, 0x84}, {0x3632, 0x90}, {0x3633, 0x43}, {0x3634, 0x09}, {0x3635, 0x82}, {0x3636, 0x48}, {0x3637, 0xe4}, {0x3641, 0x22}, {0x3670, 0x0f}, {0x3674, 0xc0}, {0x3675, 0xc0}, {0x3676, 0xc0}, {0x3677, 0x86}, {0x3678, 0x88}, {0x3679, 0x8c}, {0x367c, 0x01}, {0x367d, 0x0f}, {0x367e, 0x01}, {0x367f, 0x0f}, {0x3690, 0x43}, {0x3691, 0x43}, {0x3692, 0x53}, {0x369c, 0x01}, {0x369d, 0x1f}, {0x369e, 0x8a}, {0x369f, 0x9e}, {0x36a0, 0xda}, {0x36a1, 0x01}, {0x36a2, 0x03}, {0x3900, 0x0d}, {0x3904, 0x06}, {0x3905, 0x98}, {0x391b, 0x81}, {0x391c, 0x10}, {0x391d, 0x19}, {0x3933, 0x81}, {0x3934, 0x82}, {0x3940, 0x91}, {0x3942, 0x01}, {0x3943, 0x82}, {0x3949, 0xc8}, {0x394b, 0x64}, {0x3952, 0x02}, {0x3e00, 0x00}, {0x3e01, 0x26}, {0x3e02, 0xb0}, {0x4502, 0x34}, {0x4509, 0x30}, {0x4819, 0x05}, {0x481b, 0x03}, {0x481d, 0x0a}, {0x481f, 0x02}, {0x4821, 0x08}, {0x4823, 0x03}, {0x4825, 0x02}, {0x4827, 0x03}, {0x4829, 0x04}, {0x5000, 0x46}, {0x5900, 0x01}, {0x5901, 0x04}, {REG_NULL, 0x00} }; /* * The width and height must be configured to be * the same as the current output resolution of the sensor. * The input width of the isp needs to be 16 aligned. * The input height of the isp needs to be 8 aligned. * If the width or height does not meet the alignment rules, * you can configure the cropping parameters with the following function to * crop out the appropriate resolution. * struct v4l2_subdev_pad_ops { * .get_selection * } */ static const struct sc2355_mode supported_modes[] = { { /* linear modes */ .bus_fmt = MEDIA_BUS_FMT_SBGGR10_1X10, .width = 640, .height = 480, .max_fps = { .numerator = 10000, .denominator = 600000, }, .exp_def = 0x026b, .hts_def = 0x0554, .vts_def = 0x0271, .reg_list = sc2355_linear10bit_640x480_regs, .hdr_mode = NO_HDR, .mipi_freq_idx = 0, .bpp = 10, .vc[PAD0] = V4L2_MBUS_CSI2_CHANNEL_0, }, }; static const s64 link_freq_items[] = { MIPI_FREQ_360M, }; static const char * const sc2355_test_pattern_menu[] = { "Disabled", "Vertical Color Bar Type 1" }; /* Write registers up to 4 at a time */ static int sc2355_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 sc2355_write_array(struct i2c_client *client, const struct regval *regs) { u32 i; int ret = 0; for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) { ret |= sc2355_write_reg(client, regs[i].addr, SC2355_REG_VALUE_08BIT, regs[i].val); } return ret; } /* Read registers up to 4 at a time */ static int sc2355_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 sc2355_get_reso_dist(const struct sc2355_mode *mode, struct v4l2_mbus_framefmt *framefmt) { return abs(mode->width - framefmt->width) + abs(mode->height - framefmt->height); } static const struct sc2355_mode * sc2355_find_best_fit(struct sc2355 *sc2355, 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; unsigned int i; for (i = 0; i < sc2355->cfg_num; i++) { dist = sc2355_get_reso_dist(&supported_modes[i], framefmt); if ((cur_best_fit_dist == -1 || dist <= cur_best_fit_dist) && (supported_modes[i].bus_fmt == framefmt->code)) { cur_best_fit_dist = dist; cur_best_fit = i; } } return &supported_modes[cur_best_fit]; } static void sc2355_change_mode(struct sc2355 *sc2355, const struct sc2355_mode *mode) { sc2355->cur_mode = mode; sc2355->cur_vts = sc2355->cur_mode->vts_def; dev_info(&sc2355->client->dev, "set fmt: cur_mode: %dx%d, hdr: %d\n", mode->width, mode->height, mode->hdr_mode); } static int sc2355_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct sc2355 *sc2355 = to_sc2355(sd); const struct sc2355_mode *mode; s64 h_blank, vblank_def; u64 pixel_rate = 0; mutex_lock(&sc2355->mutex); mode = sc2355_find_best_fit(sc2355, fmt); fmt->format.code = mode->bus_fmt; 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(&sc2355->mutex); return -ENOTTY; #endif } else { sc2355_change_mode(sc2355, mode); h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(sc2355->hblank, h_blank, h_blank, 1, h_blank); vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(sc2355->vblank, vblank_def, SC2355_VTS_MAX - mode->height, 1, vblank_def); __v4l2_ctrl_s_ctrl(sc2355->link_freq, mode->mipi_freq_idx); pixel_rate = (u32)link_freq_items[mode->mipi_freq_idx] / mode->bpp * 2 * SC2355_LANES; __v4l2_ctrl_s_ctrl_int64(sc2355->pixel_rate, pixel_rate); } mutex_unlock(&sc2355->mutex); return 0; } static int sc2355_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct sc2355 *sc2355 = to_sc2355(sd); const struct sc2355_mode *mode = sc2355->cur_mode; mutex_lock(&sc2355->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(&sc2355->mutex); return -ENOTTY; #endif } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = mode->bus_fmt; fmt->format.field = V4L2_FIELD_NONE; if (fmt->pad < PAD_MAX && mode->hdr_mode != NO_HDR) fmt->reserved[0] = mode->vc[fmt->pad]; else fmt->reserved[0] = mode->vc[PAD0]; } mutex_unlock(&sc2355->mutex); return 0; } static int sc2355_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { struct sc2355 *sc2355 = to_sc2355(sd); if (code->index != 0) return -EINVAL; code->code = sc2355->cur_mode->bus_fmt; return 0; } static int sc2355_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { struct sc2355 *sc2355 = to_sc2355(sd); if (fse->index >= sc2355->cfg_num) return -EINVAL; if (fse->code != supported_modes[fse->index].bus_fmt) 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 sc2355_enable_test_pattern(struct sc2355 *sc2355, u32 pattern) { u32 val = 0; int ret = 0; ret = sc2355_read_reg(sc2355->client, SC2355_REG_TEST_PATTERN, SC2355_REG_VALUE_08BIT, &val); if (pattern) val |= SC2355_TEST_PATTERN_ENABLE; else val &= ~SC2355_TEST_PATTERN_ENABLE; ret |= sc2355_write_reg(sc2355->client, SC2355_REG_TEST_PATTERN, SC2355_REG_VALUE_08BIT, val); return ret; } static int sc2355_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct sc2355 *sc2355 = to_sc2355(sd); const struct sc2355_mode *mode = sc2355->cur_mode; mutex_lock(&sc2355->mutex); fi->interval = mode->max_fps; mutex_unlock(&sc2355->mutex); return 0; } static int sc2355_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *config) { struct sc2355 *sc2355 = to_sc2355(sd); const struct sc2355_mode *mode = sc2355->cur_mode; u32 val = 0; if (mode->hdr_mode == NO_HDR) val = 1 << (SC2355_LANES - 1) | V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; if (mode->hdr_mode == HDR_X2) val = 1 << (SC2355_LANES - 1) | V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CONTINUOUS_CLOCK | V4L2_MBUS_CSI2_CHANNEL_1; config->type = V4L2_MBUS_CSI2; config->flags = val; return 0; } static void sc2355_get_module_inf(struct sc2355 *sc2355, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strscpy(inf->base.sensor, SC2355_NAME, sizeof(inf->base.sensor)); strscpy(inf->base.module, sc2355->module_name, sizeof(inf->base.module)); strscpy(inf->base.lens, sc2355->len_name, sizeof(inf->base.lens)); } static void sc2355_get_gain(u32 total_gain, u32 *again_reg, u32 *dgain_reg, u32 *dgain_fine_reg) { u32 again = 0; u32 dgain = 0, dgain_fine = 0; if (total_gain < 0x0100) {/* 1x gain ~ 2x gain */ again = 0x00; dgain = 0x00; dgain_fine = total_gain; } else if (total_gain < 0x0200) { /* 2x gain ~ 4x gain */ again = 0x01; dgain = 0x00; dgain_fine = total_gain >> 1; } else if (total_gain < 0x0400) { /* 4x gain ~ 8x gain */ again = 0x03; dgain = 0x00; dgain_fine = total_gain >> 2; } else if (total_gain < 0x0800) { /* 8x gain ~ 16x gain */ again = 0x07; dgain = 0x00; dgain_fine = total_gain >> 3; } else if (total_gain < 0x1000) { /* 16x gain ~ 32x gain */ again = 0xF; dgain = 0x00; dgain_fine = total_gain >> 4; } else if (total_gain < 0x2000) { /* 32x gain ~ 64x gain */ again = 0x1F; dgain = 0x00; dgain_fine = total_gain >> 5; } else if (total_gain < 0x4000) { /* 64x gain ~ 128x gain */ again = 0x1F; dgain = 0x01; dgain_fine = total_gain >> 6; } else if (total_gain < 0x8000) { /* 128x gain ~ 256x gain */ again = 0x1F; dgain = 0x03; dgain_fine = total_gain >> 7; } *again_reg = again; *dgain_reg = dgain; *dgain_fine_reg = dgain_fine; } static long sc2355_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct sc2355 *sc2355 = to_sc2355(sd); struct rkmodule_hdr_cfg *hdr_cfg; const struct sc2355_mode *mode; long ret = 0; u64 pixel_rate = 0; u32 i, h, w, stream; switch (cmd) { case RKMODULE_SET_HDR_CFG: hdr_cfg = (struct rkmodule_hdr_cfg *)arg; if (sc2355->streaming) { ret = sc2355_write_array(sc2355->client, sc2355->cur_mode->reg_list); if (ret) return ret; } w = sc2355->cur_mode->width; h = sc2355->cur_mode->height; for (i = 0; i < sc2355->cfg_num; i++) { if (w == supported_modes[i].width && h == supported_modes[i].height && supported_modes[i].hdr_mode == hdr_cfg->hdr_mode) { sc2355_change_mode(sc2355, &supported_modes[i]); break; } } if (i == sc2355->cfg_num) { dev_err(&sc2355->client->dev, "not find hdr mode:%d %dx%d config\n", hdr_cfg->hdr_mode, w, h); ret = -EINVAL; } else { mode = sc2355->cur_mode; w = mode->hts_def - mode->width; h = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(sc2355->hblank, w, w, 1, w); __v4l2_ctrl_modify_range(sc2355->vblank, h, SC2355_VTS_MAX - mode->height, 1, h); __v4l2_ctrl_s_ctrl(sc2355->link_freq, mode->mipi_freq_idx); pixel_rate = (u32)link_freq_items[mode->mipi_freq_idx] / mode->bpp * 2 * SC2355_LANES; __v4l2_ctrl_s_ctrl_int64(sc2355->pixel_rate, pixel_rate); dev_info(&sc2355->client->dev, "sensor mode: %d\n", mode->hdr_mode); } break; case RKMODULE_GET_MODULE_INFO: sc2355_get_module_inf(sc2355, (struct rkmodule_inf *)arg); break; case RKMODULE_GET_HDR_CFG: hdr_cfg = (struct rkmodule_hdr_cfg *)arg; hdr_cfg->esp.mode = HDR_NORMAL_VC; hdr_cfg->hdr_mode = sc2355->cur_mode->hdr_mode; break; case RKMODULE_SET_QUICK_STREAM: stream = *((u32 *)arg); if (stream) ret = sc2355_write_reg(sc2355->client, SC2355_REG_CTRL_MODE, SC2355_REG_VALUE_08BIT, SC2355_MODE_STREAMING); else ret = sc2355_write_reg(sc2355->client, SC2355_REG_CTRL_MODE, SC2355_REG_VALUE_08BIT, SC2355_MODE_SW_STANDBY); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #ifdef CONFIG_COMPAT static long sc2355_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; struct rkmodule_hdr_cfg *hdr; struct preisp_hdrae_exp_s *hdrae; long ret = 0; u32 cg = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = sc2355_ioctl(sd, cmd, inf); if (!ret) { ret = copy_to_user(up, inf, sizeof(*inf)); if (ret) return -EFAULT; } kfree(inf); break; case RKMODULE_AWB_CFG: cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); if (!cfg) { ret = -ENOMEM; return ret; } if (copy_from_user(cfg, up, sizeof(*cfg))) { kfree(cfg); return -EFAULT; } ret = sc2355_ioctl(sd, cmd, cfg); kfree(cfg); break; case RKMODULE_GET_HDR_CFG: hdr = kzalloc(sizeof(*hdr), GFP_KERNEL); if (!hdr) { ret = -ENOMEM; return ret; } ret = sc2355_ioctl(sd, cmd, hdr); if (!ret) { ret = copy_to_user(up, hdr, sizeof(*hdr)); if (ret) return -EFAULT; } kfree(hdr); break; case RKMODULE_SET_HDR_CFG: hdr = kzalloc(sizeof(*hdr), GFP_KERNEL); if (!hdr) { ret = -ENOMEM; return ret; } if (copy_from_user(hdr, up, sizeof(*hdr))) { kfree(hdr); return -EFAULT; } ret = sc2355_ioctl(sd, cmd, hdr); kfree(hdr); break; case PREISP_CMD_SET_HDRAE_EXP: hdrae = kzalloc(sizeof(*hdrae), GFP_KERNEL); if (!hdrae) { ret = -ENOMEM; return ret; } if (copy_from_user(hdrae, up, sizeof(*hdrae))) { kfree(hdrae); return -EFAULT; } ret = sc2355_ioctl(sd, cmd, hdrae); kfree(hdrae); break; case RKMODULE_SET_CONVERSION_GAIN: if (copy_from_user(&cg, up, sizeof(cg))) return -EFAULT; ret = sc2355_ioctl(sd, cmd, &cg); break; case RKMODULE_SET_QUICK_STREAM: if (copy_from_user(&stream, up, sizeof(u32))) return -EFAULT; ret = sc2355_ioctl(sd, cmd, &stream); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif static int __sc2355_start_stream(struct sc2355 *sc2355) { int ret; ret = sc2355_write_array(sc2355->client, sc2355->cur_mode->reg_list); if (ret) return ret; ret = __v4l2_ctrl_handler_setup(&sc2355->ctrl_handler); if (ret) return ret; /* In case these controls are set before streaming */ if (sc2355->has_init_exp && sc2355->cur_mode->hdr_mode != NO_HDR) { ret = sc2355_ioctl(&sc2355->subdev, PREISP_CMD_SET_HDRAE_EXP, &sc2355->init_hdrae_exp); if (ret) { dev_err(&sc2355->client->dev, "init exp fail in hdr mode\n"); return ret; } } return sc2355_write_reg(sc2355->client, SC2355_REG_CTRL_MODE, SC2355_REG_VALUE_08BIT, SC2355_MODE_STREAMING); } static int __sc2355_stop_stream(struct sc2355 *sc2355) { sc2355->has_init_exp = false; return sc2355_write_reg(sc2355->client, SC2355_REG_CTRL_MODE, SC2355_REG_VALUE_08BIT, SC2355_MODE_SW_STANDBY); } static int sc2355_s_stream(struct v4l2_subdev *sd, int on) { struct sc2355 *sc2355 = to_sc2355(sd); struct i2c_client *client = sc2355->client; int ret = 0; mutex_lock(&sc2355->mutex); on = !!on; if (on == sc2355->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 = __sc2355_start_stream(sc2355); if (ret) { v4l2_err(sd, "start stream failed while write regs\n"); pm_runtime_put(&client->dev); goto unlock_and_return; } } else { __sc2355_stop_stream(sc2355); pm_runtime_put(&client->dev); } sc2355->streaming = on; unlock_and_return: mutex_unlock(&sc2355->mutex); return ret; } static int sc2355_s_power(struct v4l2_subdev *sd, int on) { struct sc2355 *sc2355 = to_sc2355(sd); struct i2c_client *client = sc2355->client; int ret = 0; mutex_lock(&sc2355->mutex); /* If the power state is not modified - no work to do. */ if (sc2355->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 |= sc2355_write_reg(sc2355->client, SC2355_SOFTWARE_RESET_REG, SC2355_REG_VALUE_08BIT, 0x01); usleep_range(100, 200); sc2355->power_on = true; } else { pm_runtime_put(&client->dev); sc2355->power_on = false; } unlock_and_return: mutex_unlock(&sc2355->mutex); return ret; } static int __sc2355_power_on(struct sc2355 *sc2355) { int ret; struct device *dev = &sc2355->client->dev; if (!IS_ERR_OR_NULL(sc2355->pins_default)) { ret = pinctrl_select_state(sc2355->pinctrl, sc2355->pins_default); if (ret < 0) dev_err(dev, "could not set pins\n"); } ret = clk_set_rate(sc2355->xvclk, SC2355_XVCLK_FREQ); if (ret < 0) dev_warn(dev, "Failed to set xvclk rate (24MHz)\n"); if (clk_get_rate(sc2355->xvclk) != SC2355_XVCLK_FREQ) dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n"); ret = clk_prepare_enable(sc2355->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } if (!IS_ERR(sc2355->reset_gpio)) gpiod_set_value_cansleep(sc2355->reset_gpio, 1); ret = regulator_bulk_enable(SC2355_NUM_SUPPLIES, sc2355->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } if (!IS_ERR(sc2355->reset_gpio)) gpiod_set_value_cansleep(sc2355->reset_gpio, 0); usleep_range(500, 1000); if (!IS_ERR(sc2355->pwdn_gpio)) gpiod_set_value_cansleep(sc2355->pwdn_gpio, 0); usleep_range(2000, 4000); return 0; disable_clk: clk_disable_unprepare(sc2355->xvclk); return ret; } static void __sc2355_power_off(struct sc2355 *sc2355) { int ret; struct device *dev = &sc2355->client->dev; if (!IS_ERR(sc2355->pwdn_gpio)) gpiod_set_value_cansleep(sc2355->pwdn_gpio, 1); clk_disable_unprepare(sc2355->xvclk); if (!IS_ERR(sc2355->reset_gpio)) gpiod_set_value_cansleep(sc2355->reset_gpio, 1); if (!IS_ERR_OR_NULL(sc2355->pins_sleep)) { ret = pinctrl_select_state(sc2355->pinctrl, sc2355->pins_sleep); if (ret < 0) dev_dbg(dev, "could not set pins\n"); } regulator_bulk_disable(SC2355_NUM_SUPPLIES, sc2355->supplies); } static int sc2355_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc2355 *sc2355 = to_sc2355(sd); return __sc2355_power_on(sc2355); } static int sc2355_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc2355 *sc2355 = to_sc2355(sd); __sc2355_power_off(sc2355); return 0; } #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int sc2355_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct sc2355 *sc2355 = to_sc2355(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0); const struct sc2355_mode *def_mode = &supported_modes[0]; mutex_lock(&sc2355->mutex); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = def_mode->bus_fmt; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&sc2355->mutex); /* No crop or compose */ return 0; } #endif static int sc2355_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_interval_enum *fie) { struct sc2355 *sc2355 = to_sc2355(sd); if (fie->index >= sc2355->cfg_num) return -EINVAL; fie->code = supported_modes[fie->index].bus_fmt; fie->width = supported_modes[fie->index].width; fie->height = supported_modes[fie->index].height; fie->interval = supported_modes[fie->index].max_fps; fie->reserved[0] = supported_modes[fie->index].hdr_mode; return 0; } static const struct dev_pm_ops sc2355_pm_ops = { SET_RUNTIME_PM_OPS(sc2355_runtime_suspend, sc2355_runtime_resume, NULL) }; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops sc2355_internal_ops = { .open = sc2355_open, }; #endif static const struct v4l2_subdev_core_ops sc2355_core_ops = { .s_power = sc2355_s_power, .ioctl = sc2355_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = sc2355_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops sc2355_video_ops = { .s_stream = sc2355_s_stream, .g_frame_interval = sc2355_g_frame_interval, .g_mbus_config = sc2355_g_mbus_config, }; static const struct v4l2_subdev_pad_ops sc2355_pad_ops = { .enum_mbus_code = sc2355_enum_mbus_code, .enum_frame_size = sc2355_enum_frame_sizes, .enum_frame_interval = sc2355_enum_frame_interval, .get_fmt = sc2355_get_fmt, .set_fmt = sc2355_set_fmt, }; static const struct v4l2_subdev_ops sc2355_subdev_ops = { .core = &sc2355_core_ops, .video = &sc2355_video_ops, .pad = &sc2355_pad_ops, }; static int sc2355_set_ctrl(struct v4l2_ctrl *ctrl) { struct sc2355 *sc2355 = container_of(ctrl->handler, struct sc2355, ctrl_handler); struct i2c_client *client = sc2355->client; s64 max; u32 again, dgain, dgain_fine; int ret = 0; u32 val; /* Propagate change of current control to all related controls */ switch (ctrl->id) { case V4L2_CID_VBLANK: /* Update max exposure while meeting expected vblanking */ max = sc2355->cur_mode->height + ctrl->val - 4; __v4l2_ctrl_modify_range(sc2355->exposure, sc2355->exposure->minimum, max, sc2355->exposure->step, sc2355->exposure->default_value); break; } if (!pm_runtime_get_if_in_use(&client->dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: if (sc2355->cur_mode->hdr_mode != NO_HDR) return ret; ret = sc2355_write_reg(sc2355->client, SC2355_GROUP_HOLD, SC2355_REG_VALUE_08BIT, SC2355_GROUP_UPDATE_DATA_START); ret |= sc2355_write_reg(sc2355->client, SC2355_REG_EXPOSURE, SC2355_REG_VALUE_24BIT, ctrl->val << 4); ret |= sc2355_write_reg(sc2355->client, SC2355_GROUP_HOLD, SC2355_REG_VALUE_08BIT, SC2355_GROUP_UPDATE_LAUNCH); break; case V4L2_CID_ANALOGUE_GAIN: if (sc2355->cur_mode->hdr_mode != NO_HDR) return ret; sc2355_get_gain(ctrl->val, &again, &dgain, &dgain_fine); val = ctrl->val << 1; dev_dbg(&client->dev, "recv:%d set again 0x%x, set dgain 0x%x, dgain_fine 0x%x\n", ctrl->val, again, dgain, dgain_fine); ret |= sc2355_write_reg(sc2355->client, SC2355_REG_AGAIN, SC2355_REG_VALUE_08BIT, again); ret |= sc2355_write_reg(sc2355->client, SC2355_REG_DGAIN, SC2355_REG_VALUE_08BIT, dgain); ret |= sc2355_write_reg(sc2355->client, SC2355_REG_DGAIN_FINE, SC2355_REG_VALUE_08BIT, dgain_fine); break; case V4L2_CID_VBLANK: ret = sc2355_write_reg(sc2355->client, SC2355_REG_VTS, SC2355_REG_VALUE_16BIT, ctrl->val + sc2355->cur_mode->height); dev_dbg(&client->dev, "set vblank 0x%x\n", ctrl->val); break; case V4L2_CID_TEST_PATTERN: ret = sc2355_enable_test_pattern(sc2355, ctrl->val); break; case V4L2_CID_HFLIP: ret = sc2355_read_reg(sc2355->client, SC2355_FLIP_REG, SC2355_REG_VALUE_08BIT, &val); if (ret) break; if (ctrl->val) val |= SC2355_MIRROR_MASK; else val &= ~SC2355_MIRROR_MASK; ret |= sc2355_write_reg(sc2355->client, SC2355_FLIP_REG, SC2355_REG_VALUE_08BIT, val); break; case V4L2_CID_VFLIP: ret = sc2355_read_reg(sc2355->client, SC2355_FLIP_REG, SC2355_REG_VALUE_08BIT, &val); if (ret) break; if (ctrl->val) val |= SC2355_FLIP_MASK; else val &= ~SC2355_FLIP_MASK; ret |= sc2355_write_reg(sc2355->client, SC2355_FLIP_REG, SC2355_REG_VALUE_08BIT, 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 sc2355_ctrl_ops = { .s_ctrl = sc2355_set_ctrl, }; static int sc2355_initialize_controls(struct sc2355 *sc2355) { const struct sc2355_mode *mode; struct v4l2_ctrl_handler *handler; s64 exposure_max, vblank_def; u32 h_blank; int ret; u64 pixel_rate = 0; handler = &sc2355->ctrl_handler; mode = sc2355->cur_mode; ret = v4l2_ctrl_handler_init(handler, 9); if (ret) return ret; handler->lock = &sc2355->mutex; sc2355->link_freq = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq_items) - 1, 0, link_freq_items); __v4l2_ctrl_s_ctrl(sc2355->link_freq, mode->mipi_freq_idx); /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ pixel_rate = (u32)link_freq_items[mode->mipi_freq_idx] / mode->bpp * 2 * SC2355_LANES; sc2355->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, SC2355_MAX_PIXEL_RATE, 1, pixel_rate); h_blank = mode->hts_def - mode->width; sc2355->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (sc2355->hblank) sc2355->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; vblank_def = mode->vts_def - mode->height; sc2355->vblank = v4l2_ctrl_new_std(handler, &sc2355_ctrl_ops, V4L2_CID_VBLANK, vblank_def, SC2355_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 3; sc2355->exposure = v4l2_ctrl_new_std(handler, &sc2355_ctrl_ops, V4L2_CID_EXPOSURE, SC2355_EXPOSURE_MIN, exposure_max, SC2355_EXPOSURE_STEP, mode->exp_def); sc2355->anal_gain = v4l2_ctrl_new_std(handler, &sc2355_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, SC2355_GAIN_MIN, SC2355_GAIN_MAX, SC2355_GAIN_STEP, SC2355_GAIN_DEFAULT); sc2355->test_pattern = v4l2_ctrl_new_std_menu_items(handler, &sc2355_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(sc2355_test_pattern_menu) - 1, 0, 0, sc2355_test_pattern_menu); v4l2_ctrl_new_std(handler, &sc2355_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(handler, &sc2355_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); if (handler->error) { ret = handler->error; dev_err(&sc2355->client->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } sc2355->subdev.ctrl_handler = handler; sc2355->has_init_exp = false; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int sc2355_check_sensor_id(struct sc2355 *sc2355, struct i2c_client *client) { struct device *dev = &sc2355->client->dev; u32 id = 0; int ret; ret = sc2355_read_reg(client, SC2355_REG_CHIP_ID, SC2355_REG_VALUE_16BIT, &id); if (id != CHIP_ID) { dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", id, ret); return -ENODEV; } dev_info(dev, "Detected SC%04x sensor\n", CHIP_ID); return 0; } static int sc2355_configure_regulators(struct sc2355 *sc2355) { unsigned int i; for (i = 0; i < SC2355_NUM_SUPPLIES; i++) sc2355->supplies[i].supply = sc2355_supply_names[i]; return devm_regulator_bulk_get(&sc2355->client->dev, SC2355_NUM_SUPPLIES, sc2355->supplies); } static int sc2355_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct sc2355 *sc2355; struct v4l2_subdev *sd; char facing[2]; int ret; u32 i, hdr_mode = 0; dev_info(dev, "driver version: %02x.%02x.%02x", DRIVER_VERSION >> 16, (DRIVER_VERSION & 0xff00) >> 8, DRIVER_VERSION & 0x00ff); sc2355 = devm_kzalloc(dev, sizeof(*sc2355), GFP_KERNEL); if (!sc2355) return -ENOMEM; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &sc2355->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &sc2355->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &sc2355->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &sc2355->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } ret = of_property_read_u32(node, OF_CAMERA_HDR_MODE, &hdr_mode); if (ret) { hdr_mode = NO_HDR; dev_warn(dev, " Get hdr mode failed! no hdr default\n"); } sc2355->cfg_num = ARRAY_SIZE(supported_modes); for (i = 0; i < sc2355->cfg_num; i++) { if (hdr_mode == supported_modes[i].hdr_mode) { sc2355->cur_mode = &supported_modes[i]; break; } } sc2355->client = client; sc2355->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(sc2355->xvclk)) { dev_err(dev, "Failed to get xvclk\n"); return -EINVAL; } sc2355->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(sc2355->reset_gpio)) dev_warn(dev, "Failed to get reset-gpios\n"); sc2355->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(sc2355->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios\n"); sc2355->pinctrl = devm_pinctrl_get(dev); if (!IS_ERR(sc2355->pinctrl)) { sc2355->pins_default = pinctrl_lookup_state(sc2355->pinctrl, OF_CAMERA_PINCTRL_STATE_DEFAULT); if (IS_ERR(sc2355->pins_default)) dev_err(dev, "could not get default pinstate\n"); sc2355->pins_sleep = pinctrl_lookup_state(sc2355->pinctrl, OF_CAMERA_PINCTRL_STATE_SLEEP); if (IS_ERR(sc2355->pins_sleep)) dev_err(dev, "could not get sleep pinstate\n"); } else { dev_err(dev, "no pinctrl\n"); } ret = sc2355_configure_regulators(sc2355); if (ret) { dev_err(dev, "Failed to get power regulators\n"); return ret; } mutex_init(&sc2355->mutex); sd = &sc2355->subdev; v4l2_i2c_subdev_init(sd, client, &sc2355_subdev_ops); ret = sc2355_initialize_controls(sc2355); if (ret) goto err_destroy_mutex; ret = __sc2355_power_on(sc2355); if (ret) goto err_free_handler; ret = sc2355_check_sensor_id(sc2355, client); if (ret) goto err_power_off; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API sd->internal_ops = &sc2355_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; #endif #if defined(CONFIG_MEDIA_CONTROLLER) sc2355->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &sc2355->pad); if (ret < 0) goto err_power_off; #endif memset(facing, 0, sizeof(facing)); if (strcmp(sc2355->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", sc2355->module_index, facing, SC2355_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); #ifdef USED_SYS_DEBUG add_sysfs_interfaces(dev); #endif return 0; err_clean_entity: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_power_off: __sc2355_power_off(sc2355); err_free_handler: v4l2_ctrl_handler_free(&sc2355->ctrl_handler); err_destroy_mutex: mutex_destroy(&sc2355->mutex); return ret; } static int sc2355_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc2355 *sc2355 = to_sc2355(sd); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(&sc2355->ctrl_handler); mutex_destroy(&sc2355->mutex); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) __sc2355_power_off(sc2355); pm_runtime_set_suspended(&client->dev); return 0; } #if IS_ENABLED(CONFIG_OF) static const struct of_device_id sc2355_of_match[] = { { .compatible = "smartsens,sc2355" }, { }, }; MODULE_DEVICE_TABLE(of, sc2355_of_match); #endif static const struct i2c_device_id sc2355_match_id[] = { { "smartsens,sc2355", 0 }, { }, }; static struct i2c_driver sc2355_i2c_driver = { .driver = { .name = SC2355_NAME, .pm = &sc2355_pm_ops, .of_match_table = of_match_ptr(sc2355_of_match), }, .probe = &sc2355_probe, .remove = &sc2355_remove, .id_table = sc2355_match_id, }; #ifdef CONFIG_ROCKCHIP_THUNDER_BOOT module_i2c_driver(sc2355_i2c_driver); #else static int __init sensor_mod_init(void) { return i2c_add_driver(&sc2355_i2c_driver); } static void __exit sensor_mod_exit(void) { i2c_del_driver(&sc2355_i2c_driver); } device_initcall_sync(sensor_mod_init); module_exit(sensor_mod_exit); #endif MODULE_DESCRIPTION("Smartsens sc2355 sensor driver"); MODULE_LICENSE("GPL v2");