// SPDX-License-Identifier: GPL-2.0 /* * sc501ai driver * * Copyright (C) 2022 Rockchip Electronics Co., Ltd. * * V0.0X01.0X00 first version. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../platform/rockchip/isp/rkisp_tb_helper.h" #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x00) #ifndef V4L2_CID_DIGITAL_GAIN #define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN #endif #define SC501AI_LANES 2 #define SC501AI_LINK_FREQ_396M 396000000 // 792Mbps #define SC501AI_PIXEL_RATE_396M_10BIT (SC501AI_LINK_FREQ_396M * 2 * SC501AI_LANES / 10) #define SC501AI_XVCLK_FREQ 27000000 #define SC501AI_CHIP_ID 0xce1f #define SC501AI_REG_CHIP_ID 0x3107 #define SC501AI_REG_CTRL_MODE 0x0100 #define SC501AI_MODE_SW_STANDBY 0x0 #define SC501AI_MODE_STREAMING BIT(0) #define SC501AI_REG_EXPOSURE_H 0x3e00 #define SC501AI_REG_EXPOSURE_M 0x3e01 #define SC501AI_REG_EXPOSURE_L 0x3e02 #define SC501AI_EXPOSURE_MIN 3 #define SC501AI_EXPOSURE_STEP 1 #define SC501AI_REG_DIG_GAIN 0x3e06 #define SC501AI_REG_DIG_FINE_GAIN 0x3e07 #define SC501AI_REG_ANA_GAIN 0x3e08 #define SC501AI_REG_ANA_FINE_GAIN 0x3e09 #define SC501AI_GAIN_MIN 0x40 #define SC501AI_GAIN_MAX 0xc000 #define SC501AI_GAIN_STEP 1 #define SC501AI_GAIN_DEFAULT 0x40 #define SC501AI_REG_VTS_H 0x320e #define SC501AI_REG_VTS_L 0x320f #define SC501AI_VTS_MAX 0x7fff #define SC501AI_FLIP_MIRROR_REG 0x3221 #define SC501AI_FLIP_MASK 0x60 #define SC501AI_MIRROR_MASK 0x06 #define REG_NULL 0xFFFF #define SC501AI_REG_VALUE_08BIT 1 #define SC501AI_REG_VALUE_16BIT 2 #define SC501AI_REG_VALUE_24BIT 3 #define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default" #define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep" #define SC501AI_NAME "sc501ai" #define SC501AI_FETCH_EXP_H(VAL) (((VAL) >> 12) & 0xF) #define SC501AI_FETCH_EXP_M(VAL) (((VAL) >> 4) & 0xFF) #define SC501AI_FETCH_EXP_L(VAL) (((VAL) & 0xF) << 4) static const char * const sc501ai_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; #define sc501ai_NUM_SUPPLIES ARRAY_SIZE(sc501ai_supply_names) struct regval { u16 addr; u8 val; }; struct sc501ai_mode { u32 bus_fmt; u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; u32 mipi_freq_idx; u32 bpp; const struct regval *reg_list; u32 vc[PAD_MAX]; }; struct sc501ai { struct i2c_client *client; struct clk *xvclk; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[sc501ai_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_fract cur_fps; struct mutex mutex; bool streaming; bool power_on; const struct sc501ai_mode *cur_mode; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; bool has_init_exp; u32 cur_vts; bool is_thunderboot; bool is_first_streamoff; }; #define to_sc501ai(sd) container_of(sd, struct sc501ai, subdev) /* * Xclk 27Mhz * max_framerate 30fps * mipi_datarate per lane 792Mbps, 2lane */ static const struct regval sc501ai_linear_10_2880x1616_regs[] = { {0x0103, 0x01}, {0x0100, 0x00}, {0x36e9, 0x80}, {0x36f9, 0x80}, {0x3018, 0x32}, {0x3019, 0x0c}, {0x301f, 0x0b}, {0x3203, 0x02}, {0x3207, 0x59}, {0x320b, 0x50}, {0x3253, 0x0a}, {0x3301, 0x0a}, {0x3302, 0x18}, {0x3303, 0x10}, {0x3304, 0x60}, {0x3306, 0x60}, {0x3308, 0x10}, {0x3309, 0x70}, {0x330a, 0x00}, {0x330b, 0xf0}, {0x330d, 0x18}, {0x330e, 0x20}, {0x330f, 0x02}, {0x3310, 0x02}, {0x331c, 0x04}, {0x331e, 0x51}, {0x331f, 0x61}, {0x3320, 0x09}, {0x3333, 0x10}, {0x334c, 0x08}, {0x3356, 0x09}, {0x3364, 0x17}, {0x336d, 0x03}, {0x3390, 0x08}, {0x3391, 0x18}, {0x3392, 0x38}, {0x3393, 0x0a}, {0x3394, 0x20}, {0x3395, 0x20}, {0x3396, 0x08}, {0x3397, 0x18}, {0x3398, 0x38}, {0x3399, 0x0a}, {0x339a, 0x20}, {0x339b, 0x20}, {0x339c, 0x20}, {0x33ac, 0x10}, {0x33ae, 0x10}, {0x33af, 0x19}, {0x360f, 0x01}, {0x3622, 0x03}, {0x363a, 0x1f}, {0x363c, 0x40}, {0x3651, 0x7d}, {0x3670, 0x0a}, {0x3671, 0x07}, {0x3672, 0x17}, {0x3673, 0x1e}, {0x3674, 0x82}, {0x3675, 0x64}, {0x3676, 0x66}, {0x367a, 0x48}, {0x367b, 0x78}, {0x367c, 0x58}, {0x367d, 0x78}, {0x3690, 0x34}, {0x3691, 0x34}, {0x3692, 0x54}, {0x369c, 0x48}, {0x369d, 0x78}, {0x36ec, 0x0a}, {0x3904, 0x04}, {0x3908, 0x41}, {0x391d, 0x04}, {0x39c2, 0x30}, {0x3e01, 0xcd}, {0x3e02, 0xc0}, {0x3e16, 0x00}, {0x3e17, 0x80}, {0x4500, 0x88}, {0x4509, 0x20}, {0x4837, 0x14}, {0x5799, 0x00}, {0x59e0, 0x60}, {0x59e1, 0x08}, {0x59e2, 0x3f}, {0x59e3, 0x18}, {0x59e4, 0x18}, {0x59e5, 0x3f}, {0x59e7, 0x02}, {0x59e8, 0x38}, {0x59e9, 0x20}, {0x59ea, 0x0c}, {0x59ec, 0x08}, {0x59ed, 0x02}, {0x59ee, 0xa0}, {0x59ef, 0x08}, {0x59f4, 0x18}, {0x59f5, 0x10}, {0x59f6, 0x0c}, {0x59f9, 0x02}, {0x59fa, 0x18}, {0x59fb, 0x10}, {0x59fc, 0x0c}, {0x59ff, 0x02}, {0x36e9, 0x1c}, {0x36f9, 0x24}, {REG_NULL, 0x00}, }; static const struct sc501ai_mode supported_modes[] = { { .width = 2880, .height = 1616, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x80, .hts_def = 0xc80, .vts_def = 0x0672, .bus_fmt = MEDIA_BUS_FMT_SBGGR10_1X10, .reg_list = sc501ai_linear_10_2880x1616_regs, .mipi_freq_idx = 0, .bpp = 10, .vc[PAD0] = 0, }, }; static const s64 link_freq_menu_items[] = { SC501AI_LINK_FREQ_396M }; /* Write registers up to 4 at a time */ static int sc501ai_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 sc501ai_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 = sc501ai_write_reg(client, regs[i].addr, SC501AI_REG_VALUE_08BIT, regs[i].val); return ret; } /* Read registers up to 4 at a time */ static int sc501ai_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 sc501ai_get_reso_dist(const struct sc501ai_mode *mode, struct v4l2_mbus_framefmt *framefmt) { return abs(mode->width - framefmt->width) + abs(mode->height - framefmt->height); } static const struct sc501ai_mode * sc501ai_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; unsigned int i; for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { dist = sc501ai_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 sc501ai_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct sc501ai *sc501ai = to_sc501ai(sd); const struct sc501ai_mode *mode; s64 h_blank, vblank_def; mutex_lock(&sc501ai->mutex); mode = sc501ai_find_best_fit(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, sd_state, fmt->pad) = fmt->format; #else mutex_unlock(&sc501ai->mutex); return -ENOTTY; #endif } else { sc501ai->cur_mode = mode; h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(sc501ai->hblank, h_blank, h_blank, 1, h_blank); vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(sc501ai->vblank, vblank_def, SC501AI_VTS_MAX - mode->height, 1, vblank_def); sc501ai->cur_fps = mode->max_fps; } mutex_unlock(&sc501ai->mutex); return 0; } static int sc501ai_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct sc501ai *sc501ai = to_sc501ai(sd); const struct sc501ai_mode *mode = sc501ai->cur_mode; mutex_lock(&sc501ai->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API fmt->format = *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); #else mutex_unlock(&sc501ai->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; /* format info: width/height/data type/virctual channel */ fmt->reserved[0] = mode->vc[PAD0]; } mutex_unlock(&sc501ai->mutex); return 0; } static int sc501ai_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { struct sc501ai *sc501ai = to_sc501ai(sd); if (code->index != 0) return -EINVAL; code->code = sc501ai->cur_mode->bus_fmt; return 0; } static int sc501ai_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { if (fse->index >= ARRAY_SIZE(supported_modes)) return -EINVAL; if (fse->code != supported_modes[0].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 sc501ai_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct sc501ai *sc501ai = to_sc501ai(sd); const struct sc501ai_mode *mode = sc501ai->cur_mode; if (sc501ai->streaming) fi->interval = sc501ai->cur_fps; else fi->interval = mode->max_fps; return 0; } static int sc501ai_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *config) { config->type = V4L2_MBUS_CSI2_DPHY; config->bus.mipi_csi2.num_data_lanes = SC501AI_LANES; return 0; } static void sc501ai_get_module_inf(struct sc501ai *sc501ai, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strscpy(inf->base.sensor, SC501AI_NAME, sizeof(inf->base.sensor)); strscpy(inf->base.module, sc501ai->module_name, sizeof(inf->base.module)); strscpy(inf->base.lens, sc501ai->len_name, sizeof(inf->base.lens)); } static int sc501ai_get_gain_reg(u32 total_gain, u32 *again, u32 *again_fine, u32 *dgain, u32 *dgain_fine) { int ret = 0; u32 step = 0; if (total_gain <= 0x60) { /* 1 - 1.5x gain */ step = total_gain - 0x40; *again = 0x03; *again_fine = step + 0x40; *dgain = 0x00; *dgain_fine = 0x80; } else if (total_gain <= 0xc0) { /* 1.5x - 3x gain */ step = (total_gain - 0x60) * 64 / 0x60 - 1; *again = 0x23; *again_fine = step + 0x40; *dgain = 0x00; *dgain_fine = 0x80; } else if (total_gain <= 0x180) { /* 3x - 6x gain */ step = (total_gain - 0xc0) * 64 / 0xc0 - 1; *again = 0x27; *again_fine = step + 0x40; *dgain = 0x00; *dgain_fine = 0x80; } else if (total_gain <= 0x300) { /* 6x - 12x gain */ step = (total_gain - 0x180) * 64 / 0x180 - 1; *again = 0x2f; *again_fine = step + 0x40; *dgain = 0x00; *dgain_fine = 0x80; } else if (total_gain <= 0x600) { /* 12x - 24x gain */ step = (total_gain - 0x300) * 64 / 0x300 - 1; *again = 0x3f; *again_fine = step + 0x40; *dgain = 0x00; *dgain_fine = 0x80; } else if (total_gain <= 0xc00) { /* 24x - 48x gain */ step = (total_gain - 0x600) * 128 / 0x600 - 1; *again = 0x3f; *again_fine = 0x7f; *dgain = 0x00; *dgain_fine = 0x80 + step; } else if (total_gain <= 0x1800) { /* 48x - 96x gain */ step = (total_gain - 0xc00) * 128 / 0xc00 - 1; *again = 0x3f; *again_fine = 0x7f; *dgain = 0x01; *dgain_fine = 0x80 + step; } else if (total_gain <= 0x3000) { /* 96x - 192x gain */ step = (total_gain - 0x1800) * 128 / 0x1800 - 1; *again = 0x3f; *again_fine = 0x7f; *dgain = 0x03; *dgain_fine = 0x80 + step; } else if (total_gain <= 0x6000) { /* 192x - 384x gain */ step = (total_gain - 0x3000) * 128 / 0x3000 - 1; *again = 0x3f; *again_fine = 0x7f; *dgain = 0x07; *dgain_fine = 0x80 + step; } else if (total_gain <= 0xc000) { /* 384x - 768x gain */ step = (total_gain - 0x6000) * 128 / 0x6000 - 1; *again = 0x3f; *again_fine = 0x7f; *dgain = 0x0f; *dgain_fine = 0x80 + step; } return ret; } static long sc501ai_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct sc501ai *sc501ai = to_sc501ai(sd); long ret = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: sc501ai_get_module_inf(sc501ai, (struct rkmodule_inf *)arg); break; case RKMODULE_SET_QUICK_STREAM: stream = *((u32 *)arg); if (stream) ret = sc501ai_write_reg(sc501ai->client, SC501AI_REG_CTRL_MODE, SC501AI_REG_VALUE_08BIT, SC501AI_MODE_STREAMING); else ret = sc501ai_write_reg(sc501ai->client, SC501AI_REG_CTRL_MODE, SC501AI_REG_VALUE_08BIT, SC501AI_MODE_SW_STANDBY); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #ifdef CONFIG_COMPAT static long sc501ai_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; long ret = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = sc501ai_ioctl(sd, cmd, inf); if (!ret) { ret = copy_to_user(up, inf, sizeof(*inf)); if (ret) ret = -EFAULT; } kfree(inf); break; case RKMODULE_SET_QUICK_STREAM: if (copy_from_user(&stream, up, sizeof(u32))) return -EFAULT; ret = sc501ai_ioctl(sd, cmd, &stream); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif static int __sc501ai_start_stream(struct sc501ai *sc501ai) { int ret; if (!sc501ai->is_thunderboot) { ret = sc501ai_write_array(sc501ai->client, sc501ai->cur_mode->reg_list); if (ret) return ret; /* In case these controls are set before streaming */ ret = __v4l2_ctrl_handler_setup(&sc501ai->ctrl_handler); if (ret) return ret; } return sc501ai_write_reg(sc501ai->client, SC501AI_REG_CTRL_MODE, SC501AI_REG_VALUE_08BIT, SC501AI_MODE_STREAMING); } static int __sc501ai_stop_stream(struct sc501ai *sc501ai) { sc501ai->has_init_exp = false; if (sc501ai->is_thunderboot) { sc501ai->is_first_streamoff = true; pm_runtime_put(&sc501ai->client->dev); } return sc501ai_write_reg(sc501ai->client, SC501AI_REG_CTRL_MODE, SC501AI_REG_VALUE_08BIT, SC501AI_MODE_SW_STANDBY); } static int __sc501ai_power_on(struct sc501ai *sc501ai); static int sc501ai_s_stream(struct v4l2_subdev *sd, int on) { struct sc501ai *sc501ai = to_sc501ai(sd); struct i2c_client *client = sc501ai->client; int ret = 0; mutex_lock(&sc501ai->mutex); on = !!on; if (on == sc501ai->streaming) goto unlock_and_return; if (on) { if (sc501ai->is_thunderboot && rkisp_tb_get_state() == RKISP_TB_NG) { sc501ai->is_thunderboot = false; __sc501ai_power_on(sc501ai); } ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ret = __sc501ai_start_stream(sc501ai); if (ret) { v4l2_err(sd, "start stream failed while write regs\n"); pm_runtime_put(&client->dev); goto unlock_and_return; } } else { __sc501ai_stop_stream(sc501ai); pm_runtime_put(&client->dev); } sc501ai->streaming = on; unlock_and_return: mutex_unlock(&sc501ai->mutex); return ret; } static int sc501ai_s_power(struct v4l2_subdev *sd, int on) { struct sc501ai *sc501ai = to_sc501ai(sd); struct i2c_client *client = sc501ai->client; int ret = 0; mutex_lock(&sc501ai->mutex); /* If the power state is not modified - no work to do. */ if (sc501ai->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; } sc501ai->power_on = true; } else { pm_runtime_put(&client->dev); sc501ai->power_on = false; } unlock_and_return: mutex_unlock(&sc501ai->mutex); return ret; } static int __sc501ai_power_on(struct sc501ai *sc501ai) { int ret; struct device *dev = &sc501ai->client->dev; if (!IS_ERR_OR_NULL(sc501ai->pins_default)) { ret = pinctrl_select_state(sc501ai->pinctrl, sc501ai->pins_default); if (ret < 0) dev_err(dev, "could not set pins\n"); } ret = clk_set_rate(sc501ai->xvclk, SC501AI_XVCLK_FREQ); if (ret < 0) dev_warn(dev, "Failed to set xvclk rate (27MHz)\n"); if (clk_get_rate(sc501ai->xvclk) != SC501AI_XVCLK_FREQ) dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n"); ret = clk_prepare_enable(sc501ai->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } if (sc501ai->is_thunderboot) return 0; if (!IS_ERR(sc501ai->reset_gpio)) gpiod_set_value_cansleep(sc501ai->reset_gpio, 0); ret = regulator_bulk_enable(sc501ai_NUM_SUPPLIES, sc501ai->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } if (!IS_ERR(sc501ai->reset_gpio)) gpiod_set_value_cansleep(sc501ai->reset_gpio, 1); usleep_range(500, 1000); if (!IS_ERR(sc501ai->pwdn_gpio)) gpiod_set_value_cansleep(sc501ai->pwdn_gpio, 1); usleep_range(4000, 5000); return 0; disable_clk: clk_disable_unprepare(sc501ai->xvclk); return ret; } static void __sc501ai_power_off(struct sc501ai *sc501ai) { int ret; struct device *dev = &sc501ai->client->dev; clk_disable_unprepare(sc501ai->xvclk); if (sc501ai->is_thunderboot) { if (sc501ai->is_first_streamoff) { sc501ai->is_thunderboot = false; sc501ai->is_first_streamoff = false; } else { return; } } if (!IS_ERR(sc501ai->pwdn_gpio)) gpiod_set_value_cansleep(sc501ai->pwdn_gpio, 0); clk_disable_unprepare(sc501ai->xvclk); if (!IS_ERR(sc501ai->reset_gpio)) gpiod_set_value_cansleep(sc501ai->reset_gpio, 0); if (!IS_ERR_OR_NULL(sc501ai->pins_sleep)) { ret = pinctrl_select_state(sc501ai->pinctrl, sc501ai->pins_sleep); if (ret < 0) dev_dbg(dev, "could not set pins\n"); } regulator_bulk_disable(sc501ai_NUM_SUPPLIES, sc501ai->supplies); } static int sc501ai_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc501ai *sc501ai = to_sc501ai(sd); return __sc501ai_power_on(sc501ai); } static int sc501ai_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc501ai *sc501ai = to_sc501ai(sd); __sc501ai_power_off(sc501ai); return 0; } #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int sc501ai_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct sc501ai *sc501ai = to_sc501ai(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->state, 0); const struct sc501ai_mode *def_mode = &supported_modes[0]; mutex_lock(&sc501ai->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(&sc501ai->mutex); /* No crop or compose */ return 0; } #endif static int sc501ai_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval_enum *fie) { if (fie->index >= ARRAY_SIZE(supported_modes)) 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] = NO_HDR; return 0; } static const struct dev_pm_ops sc501ai_pm_ops = { SET_RUNTIME_PM_OPS(sc501ai_runtime_suspend, sc501ai_runtime_resume, NULL) }; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops sc501ai_internal_ops = { .open = sc501ai_open, }; #endif static const struct v4l2_subdev_core_ops sc501ai_core_ops = { .s_power = sc501ai_s_power, .ioctl = sc501ai_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = sc501ai_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops sc501ai_video_ops = { .s_stream = sc501ai_s_stream, .g_frame_interval = sc501ai_g_frame_interval, }; static const struct v4l2_subdev_pad_ops sc501ai_pad_ops = { .enum_mbus_code = sc501ai_enum_mbus_code, .enum_frame_size = sc501ai_enum_frame_sizes, .enum_frame_interval = sc501ai_enum_frame_interval, .get_fmt = sc501ai_get_fmt, .set_fmt = sc501ai_set_fmt, .get_mbus_config = sc501ai_g_mbus_config, }; static const struct v4l2_subdev_ops sc501ai_subdev_ops = { .core = &sc501ai_core_ops, .video = &sc501ai_video_ops, .pad = &sc501ai_pad_ops, }; static void sc501ai_modify_fps_info(struct sc501ai *sc501ai) { const struct sc501ai_mode *mode = sc501ai->cur_mode; sc501ai->cur_fps.denominator = mode->max_fps.denominator * sc501ai->cur_vts / mode->vts_def; } static int sc501ai_set_ctrl(struct v4l2_ctrl *ctrl) { struct sc501ai *sc501ai = container_of(ctrl->handler, struct sc501ai, ctrl_handler); struct i2c_client *client = sc501ai->client; s64 max; u32 again = 0, again_fine = 0, dgain = 0, dgain_fine = 0; int ret = 0; u32 val = 0, vts = 0; u64 delay_time = 0; u32 cur_fps = 0; u32 def_fps = 0; u32 denominator = 0; u32 numerator = 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 = sc501ai->cur_mode->height + ctrl->val - 10; __v4l2_ctrl_modify_range(sc501ai->exposure, sc501ai->exposure->minimum, max, sc501ai->exposure->step, sc501ai->exposure->default_value); break; } if (!pm_runtime_get_if_in_use(&client->dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: val = ctrl->val << 1; ret = sc501ai_write_reg(sc501ai->client, SC501AI_REG_EXPOSURE_H, SC501AI_REG_VALUE_08BIT, SC501AI_FETCH_EXP_H(val)); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_EXPOSURE_M, SC501AI_REG_VALUE_08BIT, SC501AI_FETCH_EXP_M(val)); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_EXPOSURE_L, SC501AI_REG_VALUE_08BIT, SC501AI_FETCH_EXP_L(val)); dev_dbg(&client->dev, "set exposure 0x%x\n", val); break; case V4L2_CID_ANALOGUE_GAIN: sc501ai_get_gain_reg(ctrl->val, &again, &again_fine, &dgain, &dgain_fine); ret = sc501ai_write_reg(sc501ai->client, SC501AI_REG_DIG_GAIN, SC501AI_REG_VALUE_08BIT, dgain); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_DIG_FINE_GAIN, SC501AI_REG_VALUE_08BIT, dgain_fine); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_ANA_GAIN, SC501AI_REG_VALUE_08BIT, again); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_ANA_FINE_GAIN, SC501AI_REG_VALUE_08BIT, again_fine); dev_dbg(&sc501ai->client->dev, "total_gain:%d again 0x%x, again_fine 0x%x, dgain 0x%x, dgain_fine 0x%x\n", ctrl->val, again, again_fine, dgain, dgain_fine); break; case V4L2_CID_VBLANK: vts = ctrl->val + sc501ai->cur_mode->height; ret = sc501ai_write_reg(sc501ai->client, SC501AI_REG_VTS_H, SC501AI_REG_VALUE_08BIT, (vts >> 8) & 0x7f); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_VTS_L, SC501AI_REG_VALUE_08BIT, vts & 0xff); sc501ai->cur_vts = vts; sc501ai_modify_fps_info(sc501ai); break; case V4L2_CID_HFLIP: ret = sc501ai_read_reg(sc501ai->client, SC501AI_FLIP_MIRROR_REG, SC501AI_REG_VALUE_08BIT, &val); if (ret) break; if (ctrl->val) val |= SC501AI_MIRROR_MASK; else val &= ~SC501AI_MIRROR_MASK; ret |= sc501ai_write_reg(sc501ai->client, SC501AI_FLIP_MIRROR_REG, SC501AI_REG_VALUE_08BIT, val); break; case V4L2_CID_VFLIP: ret = sc501ai_read_reg(sc501ai->client, SC501AI_FLIP_MIRROR_REG, SC501AI_REG_VALUE_08BIT, &val); if (ret) break; denominator = sc501ai->cur_mode->max_fps.denominator; numerator = sc501ai->cur_mode->max_fps.numerator; def_fps = denominator / numerator; cur_fps = def_fps * sc501ai->cur_mode->vts_def / sc501ai->cur_vts; if (cur_fps > 25) { vts = def_fps * sc501ai->cur_mode->vts_def / 25; ret = sc501ai_write_reg(sc501ai->client, SC501AI_REG_VTS_H, SC501AI_REG_VALUE_08BIT, (vts >> 8) & 0x7f); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_VTS_L, SC501AI_REG_VALUE_08BIT, vts & 0xff); delay_time = 1000000 / 25;//one frame interval delay_time *= 2; usleep_range(delay_time, delay_time + 1000); } if (ctrl->val) val |= SC501AI_FLIP_MASK; else val &= ~SC501AI_FLIP_MASK; ret |= sc501ai_write_reg(sc501ai->client, SC501AI_FLIP_MIRROR_REG, SC501AI_REG_VALUE_08BIT, val); if (cur_fps > 25) { usleep_range(delay_time, delay_time + 1000); vts = sc501ai->cur_vts; ret = sc501ai_write_reg(sc501ai->client, SC501AI_REG_VTS_H, SC501AI_REG_VALUE_08BIT, (vts >> 8) & 0x7f); ret |= sc501ai_write_reg(sc501ai->client, SC501AI_REG_VTS_L, SC501AI_REG_VALUE_08BIT, vts & 0xff); } 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 sc501ai_ctrl_ops = { .s_ctrl = sc501ai_set_ctrl, }; static int sc501ai_initialize_controls(struct sc501ai *sc501ai) { const struct sc501ai_mode *mode; struct v4l2_ctrl_handler *handler; struct v4l2_ctrl *ctrl; s64 exposure_max, vblank_def; u32 h_blank; int ret; handler = &sc501ai->ctrl_handler; mode = sc501ai->cur_mode; ret = v4l2_ctrl_handler_init(handler, 8); if (ret) return ret; handler->lock = &sc501ai->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, SC501AI_PIXEL_RATE_396M_10BIT, 1, SC501AI_PIXEL_RATE_396M_10BIT); h_blank = mode->hts_def - mode->width; sc501ai->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (sc501ai->hblank) sc501ai->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; vblank_def = mode->vts_def - mode->height; sc501ai->cur_vts = mode->vts_def; sc501ai->vblank = v4l2_ctrl_new_std(handler, &sc501ai_ctrl_ops, V4L2_CID_VBLANK, vblank_def, SC501AI_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 10; sc501ai->exposure = v4l2_ctrl_new_std(handler, &sc501ai_ctrl_ops, V4L2_CID_EXPOSURE, SC501AI_EXPOSURE_MIN, exposure_max, SC501AI_EXPOSURE_STEP, mode->exp_def); sc501ai->anal_gain = v4l2_ctrl_new_std(handler, &sc501ai_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, SC501AI_GAIN_MIN, SC501AI_GAIN_MAX, SC501AI_GAIN_STEP, SC501AI_GAIN_DEFAULT); v4l2_ctrl_new_std(handler, &sc501ai_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(handler, &sc501ai_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); if (handler->error) { ret = handler->error; dev_err(&sc501ai->client->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } sc501ai->subdev.ctrl_handler = handler; sc501ai->has_init_exp = false; sc501ai->cur_fps = mode->max_fps; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int sc501ai_check_sensor_id(struct sc501ai *sc501ai, struct i2c_client *client) { struct device *dev = &sc501ai->client->dev; u32 id = 0; int ret; if (sc501ai->is_thunderboot) { dev_info(dev, "Enable thunderboot mode, skip sensor id check\n"); return 0; } ret = sc501ai_read_reg(client, SC501AI_REG_CHIP_ID, SC501AI_REG_VALUE_16BIT, &id); if (id != SC501AI_CHIP_ID) { dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret); return -ENODEV; } dev_info(dev, "Detected SC%06x sensor\n", SC501AI_CHIP_ID); return 0; } static int sc501ai_configure_regulators(struct sc501ai *sc501ai) { unsigned int i; for (i = 0; i < sc501ai_NUM_SUPPLIES; i++) sc501ai->supplies[i].supply = sc501ai_supply_names[i]; return devm_regulator_bulk_get(&sc501ai->client->dev, sc501ai_NUM_SUPPLIES, sc501ai->supplies); } static int sc501ai_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct sc501ai *sc501ai; 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); sc501ai = devm_kzalloc(dev, sizeof(*sc501ai), GFP_KERNEL); if (!sc501ai) return -ENOMEM; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &sc501ai->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &sc501ai->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &sc501ai->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &sc501ai->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } sc501ai->is_thunderboot = IS_ENABLED(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP); sc501ai->client = client; sc501ai->cur_mode = &supported_modes[0]; sc501ai->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(sc501ai->xvclk)) { dev_err(dev, "Failed to get xvclk\n"); return -EINVAL; } if (sc501ai->is_thunderboot) { sc501ai->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_ASIS); if (IS_ERR(sc501ai->reset_gpio)) dev_warn(dev, "Failed to get reset-gpios\n"); sc501ai->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_ASIS); if (IS_ERR(sc501ai->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios\n"); } else { sc501ai->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(sc501ai->reset_gpio)) dev_warn(dev, "Failed to get reset-gpios\n"); sc501ai->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(sc501ai->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios\n"); } sc501ai->pinctrl = devm_pinctrl_get(dev); if (!IS_ERR(sc501ai->pinctrl)) { sc501ai->pins_default = pinctrl_lookup_state(sc501ai->pinctrl, OF_CAMERA_PINCTRL_STATE_DEFAULT); if (IS_ERR(sc501ai->pins_default)) dev_err(dev, "could not get default pinstate\n"); sc501ai->pins_sleep = pinctrl_lookup_state(sc501ai->pinctrl, OF_CAMERA_PINCTRL_STATE_SLEEP); if (IS_ERR(sc501ai->pins_sleep)) dev_err(dev, "could not get sleep pinstate\n"); } else { dev_err(dev, "no pinctrl\n"); } ret = sc501ai_configure_regulators(sc501ai); if (ret) { dev_err(dev, "Failed to get power regulators\n"); return ret; } mutex_init(&sc501ai->mutex); sd = &sc501ai->subdev; v4l2_i2c_subdev_init(sd, client, &sc501ai_subdev_ops); ret = sc501ai_initialize_controls(sc501ai); if (ret) goto err_destroy_mutex; ret = __sc501ai_power_on(sc501ai); if (ret) goto err_free_handler; ret = sc501ai_check_sensor_id(sc501ai, client); if (ret) goto err_power_off; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API sd->internal_ops = &sc501ai_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; #endif #if defined(CONFIG_MEDIA_CONTROLLER) sc501ai->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &sc501ai->pad); if (ret < 0) goto err_power_off; #endif memset(facing, 0, sizeof(facing)); if (strcmp(sc501ai->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", sc501ai->module_index, facing, SC501AI_NAME, dev_name(sd->dev)); ret = v4l2_async_register_subdev_sensor(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); if (sc501ai->is_thunderboot) pm_runtime_get_sync(dev); else pm_runtime_idle(dev); return 0; err_clean_entity: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_power_off: __sc501ai_power_off(sc501ai); err_free_handler: v4l2_ctrl_handler_free(&sc501ai->ctrl_handler); err_destroy_mutex: mutex_destroy(&sc501ai->mutex); return ret; } static void sc501ai_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc501ai *sc501ai = to_sc501ai(sd); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(&sc501ai->ctrl_handler); mutex_destroy(&sc501ai->mutex); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) __sc501ai_power_off(sc501ai); pm_runtime_set_suspended(&client->dev); } #if IS_ENABLED(CONFIG_OF) static const struct of_device_id sc501ai_of_match[] = { { .compatible = "smartsens,sc501ai" }, {}, }; MODULE_DEVICE_TABLE(of, sc501ai_of_match); #endif static const struct i2c_device_id sc501ai_match_id[] = { { "smartsens,sc501ai", 0 }, { }, }; static struct i2c_driver sc501ai_i2c_driver = { .driver = { .name = SC501AI_NAME, .pm = &sc501ai_pm_ops, .of_match_table = of_match_ptr(sc501ai_of_match), }, .probe = &sc501ai_probe, .remove = &sc501ai_remove, .id_table = sc501ai_match_id, }; static int __init sensor_mod_init(void) { return i2c_add_driver(&sc501ai_i2c_driver); } static void __exit sensor_mod_exit(void) { i2c_del_driver(&sc501ai_i2c_driver); } #if defined(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP) && !defined(CONFIG_INITCALL_ASYNC) subsys_initcall(sensor_mod_init); #else device_initcall_sync(sensor_mod_init); #endif module_exit(sensor_mod_exit); MODULE_DESCRIPTION("smartsens sc501ai sensor driver"); MODULE_LICENSE("GPL");