// SPDX-License-Identifier: GPL-2.0 /* * sc210iot sensor driver * * Copyright (C) 2020 Rockchip Electronics Co., Ltd. * * V0.0X01.0X00 first version. * V0.0X01.0X01 add quick stream on/off */ #include #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, 0x01) #define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default" #define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep" #define SC210IOT_NAME "sc210iot" #define SC210IOT_MEDIA_BUS_FMT MEDIA_BUS_FMT_SBGGR10_1X10 #define MIPI_FREQ 371250000 #define SC210IOT_XVCLK_FREQ 27000000 #define SC210IOT_REG_CHIP_ID_H 0x3108 #define SC210IOT_REG_CHIP_ID_L 0x3107 #define SC210IOT_REG_EXP_LONG_H 0x3e00 #define SC210IOT_REG_EXP_LONG_M 0x3e01 #define SC210IOT_REG_EXP_LONG_L 0x3e02 #define SC210IOT_REG_GAIN_LONG_3 0x3e06 #define SC210IOT_REG_GAIN_LONG_2 0x3e07 #define SC210IOT_REG_GAIN_LONG_1 0x3e08 #define SC210IOT_REG_GAIN_LONG_0 0x3e09 #define SC210IOT_REG_MIRROR_FLIP 0x3221 #define MIRROR_MASK 0x6 #define FLIP_MASK 0x60 #define SC210IOT_REG_CTRL_MODE 0x0100 #define SC210IOT_MODE_SW_STANDBY 0x0 #define SC210IOT_MODE_STREAMING BIT(0) #define SC210IOT_CHIP_ID 0x17cb #define SC210IOT_REG_VTS_H 0x320e #define SC210IOT_REG_VTS_L 0x320f #define SC210IOT_VTS_MAX 0x3FFF #define SC210IOT_HTS_MAX 0xFFF #define SC210IOT_EXPOSURE_MAX 0x3FFF #define SC210IOT_EXPOSURE_MIN 1 #define SC210IOT_EXPOSURE_STEP 1 #define SC210IOT_GAIN_MIN 0x40 #define SC210IOT_GAIN_MAX 0x8000 #define SC210IOT_GAIN_STEP 1 #define SC210IOT_GAIN_DEFAULT 64 #define SC210IOT_SOFTWARE_RESET_REG 0x0103 #define SC210IOT_LANES 2 static const char * const sc210iot_supply_names[] = { "dovdd", /* Digital I/O power */ "avdd", /* Analog power */ "dvdd", /* Digital power */ }; #define SC210IOT_NUM_SUPPLIES ARRAY_SIZE(sc210iot_supply_names) #define to_sc210iot(sd) container_of(sd, struct sc210iot, subdev) enum { LINK_FREQ_INDEX, }; struct gain_section { u16 min_gain; u16 max_gain; u16 again_regs_start; u16 again_regs_stop; u16 again_deviation; u16 dgain_regs_start; u16 dgain_regs_stop; u16 dgain_deviation; u16 steps; }; struct sc210iot_mode { u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; u32 link_freq_index; const struct reg_sequence *reg_list; u32 reg_num; u32 hdr_mode; u32 vc[PAD_MAX]; }; struct sc210iot { struct device *dev; struct clk *xvclk; struct regmap *regmap; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[SC210IOT_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 *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *h_flip; struct v4l2_ctrl *v_flip; struct v4l2_ctrl *link_freq; struct v4l2_ctrl *pixel_rate; struct mutex lock; struct v4l2_fract cur_fps; u32 cur_vts; bool streaming; bool power_on; bool is_thunderboot; bool is_thunderboot_ng; bool is_first_streamoff; unsigned int cfg_num; const struct sc210iot_mode *cur_mode; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; bool has_init_exp; struct preisp_hdrae_exp_s init_hdrae_exp; }; static const struct regmap_config sc210iot_regmap_config = { .reg_bits = 16, .val_bits = 8, .max_register = 0x6f00, }; static const s64 link_freq_menu_items[] = { MIPI_FREQ, }; /* * window size=1920*1080 mipi@2lane * mclk=27M mipi_clk=371.25Mbps * pixel_line_total=2200 line_frame_total=1125 * row_time=29.62us frame_rate=30fps */ static const struct reg_sequence sc210iot_1080p_liner_30fps_settings[] = { {0x0103, 0x01}, {0x0100, 0x00}, {0x36e9, 0x80}, {0x36f9, 0x80}, {0x301c, 0x78}, {0x3208, 0x07}, {0x3209, 0x80}, {0x320a, 0x04}, {0x320b, 0x38}, {0x320e, 0x04}, {0x320f, 0x65}, {0x3214, 0x11}, {0x3215, 0x11}, {0x3253, 0x0c}, {0x3274, 0x09}, {0x3301, 0x05}, {0x3304, 0x68}, {0x3306, 0x40}, {0x330b, 0xcc}, {0x331c, 0x01}, {0x331e, 0x61}, {0x3333, 0x10}, {0x3364, 0x17}, {0x3391, 0x18}, {0x3392, 0x38}, {0x3393, 0x08}, {0x3394, 0x0b}, {0x3395, 0x50}, {0x3620, 0x88}, {0x3622, 0x06}, {0x3630, 0xf8}, {0x3634, 0x44}, {0x3637, 0x16}, {0x363a, 0x1f}, {0x3670, 0x1c}, {0x3677, 0x84}, {0x3678, 0x86}, {0x3679, 0x8b}, {0x367e, 0x18}, {0x367f, 0x38}, {0x3690, 0x53}, {0x3691, 0x63}, {0x3692, 0x63}, {0x369c, 0x08}, {0x369d, 0x38}, {0x36a4, 0x08}, {0x36a5, 0x18}, {0x36a8, 0x08}, {0x36a9, 0x28}, {0x36aa, 0x2a}, {0x36fc, 0x11}, {0x36fd, 0x14}, {0x3e01, 0x8c}, {0x3e03, 0x0b}, {0x3e08, 0x03}, {0x3e09, 0x20}, {0x3e1b, 0x15}, {0x3f03, 0x01}, {0x36e9, 0x20}, {0x36f9, 0x24}, {0x0100, 0x01}, }; static const struct sc210iot_mode supported_modes[] = { { .width = 1920, .height = 1080, .max_fps = { .numerator = 10000, .denominator = 300000, }, .exp_def = 0x460, .hts_def = 0x898, .vts_def = 0x465, .link_freq_index = LINK_FREQ_INDEX, .reg_list = sc210iot_1080p_liner_30fps_settings, .reg_num = ARRAY_SIZE(sc210iot_1080p_liner_30fps_settings), .hdr_mode = NO_HDR, .vc[PAD0] = 0, }, }; /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ static u64 to_pixel_rate(u32 index) { u64 pixel_rate = link_freq_menu_items[index] * 2 * SC210IOT_LANES; do_div(pixel_rate, 10); return pixel_rate; } static inline int sc210iot_read_reg(struct sc210iot *sc210iot, u16 addr, u8 *value) { unsigned int val; int ret; ret = regmap_read(sc210iot->regmap, addr, &val); if (ret) { dev_err(sc210iot->dev, "i2c read failed at addr: %x\n", addr); return ret; } *value = val & 0xff; return 0; } static int __sc210iot_power_on(struct sc210iot *sc210iot); static inline int sc210iot_write_reg(struct sc210iot *sc210iot, u16 addr, u8 value) { int ret; ret = regmap_write(sc210iot->regmap, addr, value); if (ret) { dev_err(sc210iot->dev, "i2c write failed at addr: %x\n", addr); return ret; } return ret; } static const struct gain_section gain_sections[] = { { 64, 128, 0x0320, 0x033f, 64, 0x0080, 0x0080, 0, 32 }, { 128, 256, 0x0720, 0x073f, 128, 0x0080, 0x0080, 0, 32 }, { 256, 512, 0x0f20, 0x0f3f, 256, 0x0080, 0x0080, 0, 32 }, { 512, 1024, 0x1f20, 0x1f3f, 512, 0x0080, 0x0080, 0, 32 }, { 1024, 2048, 0x1f3f, 0x1f3f, 0, 0x0080, 0x00fc, 1024, 32 }, { 2048, 4096, 0x1f3f, 0x1f3f, 0, 0x0180, 0x01fc, 2048, 32 }, { 4096, 8192, 0x1f3f, 0x1f3f, 0, 0x0380, 0x03fc, 4096, 32 }, { 8192, 16384, 0x1f3f, 0x1f3f, 0, 0x0780, 0x07fc, 8192, 32 }, { 16384, 32768, 0x1f3f, 0x1f3f, 0, 0x0f80, 0x0ffc, 16384, 32 } }; static int sc210iot_set_gain(struct sc210iot *sc210iot, u32 gain) { int ret, i = 0; int offset, step, step_len, reg_step_len; int a_gain = 0, d_gain = 0; dev_dbg(sc210iot->dev, "%s: gain : %d\n", __func__, gain); if (sc210iot->is_thunderboot && rkisp_tb_get_state() == RKISP_TB_NG) { sc210iot->is_thunderboot = false; sc210iot->is_thunderboot_ng = true; __sc210iot_power_on(sc210iot); } for (i = 0; i < ARRAY_SIZE(gain_sections) - 1; i++) if ((gain_sections[i].min_gain <= gain) && (gain < gain_sections[i].max_gain)) break; if (gain_sections[i].again_deviation) { offset = gain - gain_sections[i].min_gain; step_len = gain_sections[i].again_deviation / gain_sections[i].steps; reg_step_len = 1; step = offset / step_len; a_gain = gain_sections[i].again_regs_start + step * reg_step_len; d_gain = gain_sections[i].dgain_regs_start; } else { offset = gain - gain_sections[i].min_gain; step_len = gain_sections[i].dgain_deviation / gain_sections[i].steps; step = offset / step_len; reg_step_len = 4; a_gain = gain_sections[i].again_regs_start; d_gain = gain_sections[i].dgain_regs_start + step * reg_step_len; } if (a_gain > gain_sections[i].again_regs_stop) a_gain = gain_sections[i].again_regs_stop; if (d_gain > gain_sections[i].dgain_regs_stop) d_gain = gain_sections[i].dgain_regs_stop; dev_dbg(sc210iot->dev, "%s: a_gain: 0x%x d_gain: 0x%x\n", __func__, a_gain, d_gain); ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_1, a_gain >> 8); ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_0, a_gain & 0xff); ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_3, d_gain >> 8); ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_2, d_gain & 0xff); return ret; } static int sc210iot_set_exp(struct sc210iot *sc210iot, u32 exp) { int ret; dev_dbg(sc210iot->dev, "%s: exp : %d\n", __func__, exp); ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_EXP_LONG_H, (exp >> 12) & 0xf); ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_EXP_LONG_M, (exp >> 4) & 0xff); ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_EXP_LONG_L, (exp & 0xf) << 4); return ret; } static void sc210iot_modify_fps_info(struct sc210iot *sc210iot) { const struct sc210iot_mode *mode = sc210iot->cur_mode; sc210iot->cur_fps.denominator = mode->max_fps.denominator * mode->vts_def / sc210iot->cur_vts; } static int sc210iot_set_ctrl(struct v4l2_ctrl *ctrl) { struct sc210iot *sc210iot = container_of(ctrl->handler, struct sc210iot, ctrl_handler); 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 = sc210iot->cur_mode->height + ctrl->val - 4; __v4l2_ctrl_modify_range(sc210iot->exposure, sc210iot->exposure->minimum, max, sc210iot->exposure->step, sc210iot->exposure->default_value); break; } if (!pm_runtime_get_if_in_use(sc210iot->dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: ret = sc210iot_set_exp(sc210iot, ctrl->val << 1); break; case V4L2_CID_ANALOGUE_GAIN: ret = sc210iot_set_gain(sc210iot, ctrl->val); break; case V4L2_CID_VBLANK: dev_dbg(sc210iot->dev, "set vblank 0x%x\n", ctrl->val); ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_VTS_H, (ctrl->val + sc210iot->cur_mode->height) >> 8); ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_VTS_L, (ctrl->val + sc210iot->cur_mode->height) & 0xff); if (!ret) sc210iot->cur_vts = ctrl->val + sc210iot->cur_mode->height; sc210iot_modify_fps_info(sc210iot); break; case V4L2_CID_HFLIP: regmap_update_bits(sc210iot->regmap, SC210IOT_REG_MIRROR_FLIP, MIRROR_MASK, ctrl->val ? MIRROR_MASK : 0); break; case V4L2_CID_VFLIP: regmap_update_bits(sc210iot->regmap, SC210IOT_REG_MIRROR_FLIP, FLIP_MASK, ctrl->val ? FLIP_MASK : 0); break; default: dev_warn(sc210iot->dev, "%s Unhandled id:0x%x, val:0x%x\n", __func__, ctrl->id, ctrl->val); break; } pm_runtime_put(sc210iot->dev); return ret; } static const struct v4l2_ctrl_ops sc210iot_ctrl_ops = { .s_ctrl = sc210iot_set_ctrl, }; static int sc210iot_get_regulators(struct sc210iot *sc210iot) { unsigned int i; for (i = 0; i < SC210IOT_NUM_SUPPLIES; i++) sc210iot->supplies[i].supply = sc210iot_supply_names[i]; return devm_regulator_bulk_get(sc210iot->dev, SC210IOT_NUM_SUPPLIES, sc210iot->supplies); } static int sc210iot_initialize_controls(struct sc210iot *sc210iot) { const struct sc210iot_mode *mode; struct v4l2_ctrl_handler *handler; s64 exposure_max, vblank_def; u32 h_blank; int ret; handler = &sc210iot->ctrl_handler; mode = sc210iot->cur_mode; ret = v4l2_ctrl_handler_init(handler, 8); if (ret) return ret; handler->lock = &sc210iot->lock; sc210iot->link_freq = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq_menu_items) - 1, 0, link_freq_menu_items); sc210iot->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, to_pixel_rate(LINK_FREQ_INDEX), 1, to_pixel_rate(LINK_FREQ_INDEX)); h_blank = mode->hts_def - mode->width; sc210iot->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (sc210iot->hblank) sc210iot->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; vblank_def = mode->vts_def - mode->height; sc210iot->vblank = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops, V4L2_CID_VBLANK, vblank_def, SC210IOT_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 4; sc210iot->exposure = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops, V4L2_CID_EXPOSURE, SC210IOT_EXPOSURE_MIN, exposure_max, SC210IOT_EXPOSURE_STEP, mode->exp_def); sc210iot->anal_gain = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, SC210IOT_GAIN_MIN, SC210IOT_GAIN_MAX, SC210IOT_GAIN_STEP, SC210IOT_GAIN_DEFAULT); sc210iot->h_flip = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); sc210iot->v_flip = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); if (handler->error) { ret = handler->error; dev_err(sc210iot->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } sc210iot->subdev.ctrl_handler = handler; sc210iot->has_init_exp = false; sc210iot->cur_fps = mode->max_fps; sc210iot->cur_vts = mode->vts_def; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int __sc210iot_power_on(struct sc210iot *sc210iot) { int ret; struct device *dev = sc210iot->dev; if (sc210iot->is_thunderboot) return 0; if (!IS_ERR_OR_NULL(sc210iot->pins_default)) { ret = pinctrl_select_state(sc210iot->pinctrl, sc210iot->pins_default); if (ret < 0) dev_err(dev, "could not set pins\n"); } ret = clk_set_rate(sc210iot->xvclk, SC210IOT_XVCLK_FREQ); if (ret < 0) dev_warn(dev, "Failed to set xvclk rate\n"); if (clk_get_rate(sc210iot->xvclk) != SC210IOT_XVCLK_FREQ) dev_warn(dev, "xvclk mismatched, modes are based on 27MHz\n"); ret = clk_prepare_enable(sc210iot->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } ret = regulator_bulk_enable(SC210IOT_NUM_SUPPLIES, sc210iot->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } if (!IS_ERR(sc210iot->reset_gpio)) gpiod_direction_output(sc210iot->reset_gpio, 1); usleep_range(1000, 2000); if (!IS_ERR(sc210iot->pwdn_gpio)) gpiod_direction_output(sc210iot->pwdn_gpio, 1); if (!IS_ERR(sc210iot->reset_gpio)) gpiod_direction_output(sc210iot->reset_gpio, 0); usleep_range(10000, 20000); return 0; disable_clk: clk_disable_unprepare(sc210iot->xvclk); if (!IS_ERR_OR_NULL(sc210iot->pins_sleep)) pinctrl_select_state(sc210iot->pinctrl, sc210iot->pins_sleep); return ret; } static void __sc210iot_power_off(struct sc210iot *sc210iot) { int ret; struct device *dev = sc210iot->dev; if (sc210iot->is_thunderboot) { if (sc210iot->is_first_streamoff) { sc210iot->is_thunderboot = false; sc210iot->is_first_streamoff = false; } else { return; } } if (!IS_ERR_OR_NULL(sc210iot->pins_sleep)) { ret = pinctrl_select_state(sc210iot->pinctrl, sc210iot->pins_sleep); if (ret < 0) dev_dbg(dev, "could not set pins\n"); } if (!IS_ERR(sc210iot->reset_gpio)) gpiod_direction_output(sc210iot->reset_gpio, 1); if (!IS_ERR(sc210iot->pwdn_gpio)) gpiod_direction_output(sc210iot->pwdn_gpio, 0); if (sc210iot->is_thunderboot_ng) { sc210iot->is_thunderboot_ng = false; regulator_bulk_disable(SC210IOT_NUM_SUPPLIES, sc210iot->supplies); } clk_disable_unprepare(sc210iot->xvclk); } static int sc210iot_check_sensor_id(struct sc210iot *sc210iot) { u8 id_h = 0, id_l = 0; u16 id = 0; int ret = 0; if (sc210iot->is_thunderboot) { dev_info(sc210iot->dev, "Enable thunderboot mode, skip sensor id check\n"); return 0; } ret = sc210iot_read_reg(sc210iot, SC210IOT_REG_CHIP_ID_H, &id_h); ret |= sc210iot_read_reg(sc210iot, SC210IOT_REG_CHIP_ID_L, &id_l); if (ret) { dev_err(sc210iot->dev, "Failed to read sensor id, (%d)\n", ret); return ret; } id = id_h << 8 | id_l; if (id != SC210IOT_CHIP_ID) { dev_err(sc210iot->dev, "sensor id: %04X mismatched\n", id); return -ENODEV; } dev_info(sc210iot->dev, "Detected SC210IOT sensor\n"); return 0; } static void sc210iot_get_module_inf(struct sc210iot *sc210iot, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strlcpy(inf->base.lens, sc210iot->len_name, sizeof(inf->base.lens)); strlcpy(inf->base.sensor, SC210IOT_NAME, sizeof(inf->base.sensor)); strlcpy(inf->base.module, sc210iot->module_name, sizeof(inf->base.module)); } static long sc210iot_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct sc210iot *sc210iot = to_sc210iot(sd); struct rkmodule_hdr_cfg *hdr_cfg; long ret = 0; u32 stream = 0; switch (cmd) { case RKMODULE_GET_HDR_CFG: hdr_cfg = (struct rkmodule_hdr_cfg *)arg; hdr_cfg->esp.mode = HDR_NORMAL_VC; hdr_cfg->hdr_mode = sc210iot->cur_mode->hdr_mode; break; case RKMODULE_GET_MODULE_INFO: sc210iot_get_module_inf(sc210iot, (struct rkmodule_inf *)arg); break; case RKMODULE_SET_HDR_CFG: break; case RKMODULE_SET_QUICK_STREAM: stream = *((u32 *)arg); if (stream) ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_CTRL_MODE, SC210IOT_MODE_STREAMING); else ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_CTRL_MODE, SC210IOT_MODE_SW_STANDBY); break; default: ret = -ENOIOCTLCMD; break; } return ret; } static int __sc210iot_start_stream(struct sc210iot *sc210iot) { int ret = 0; if (!sc210iot->is_thunderboot) { ret = regmap_multi_reg_write(sc210iot->regmap, sc210iot->cur_mode->reg_list, sc210iot->cur_mode->reg_num); if (ret) return ret; } __v4l2_ctrl_handler_setup(&sc210iot->ctrl_handler); return sc210iot_write_reg(sc210iot, SC210IOT_REG_CTRL_MODE, SC210IOT_MODE_STREAMING); } static int __sc210iot_stop_stream(struct sc210iot *sc210iot) { sc210iot->has_init_exp = false; if (sc210iot->is_thunderboot) sc210iot->is_first_streamoff = true; return sc210iot_write_reg(sc210iot, SC210IOT_REG_CTRL_MODE, SC210IOT_MODE_SW_STANDBY); } #ifdef CONFIG_COMPAT static long sc210iot_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; struct rkmodule_hdr_cfg *hdr; 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 = sc210iot_ioctl(sd, cmd, inf); if (!ret) { ret = copy_to_user(up, inf, sizeof(*inf)); if (ret) ret = -EFAULT; } kfree(inf); break; case RKMODULE_GET_HDR_CFG: hdr = kzalloc(sizeof(*hdr), GFP_KERNEL); if (!hdr) { ret = -ENOMEM; return ret; } ret = sc210iot_ioctl(sd, cmd, hdr); if (!ret) { ret = copy_to_user(up, hdr, sizeof(*hdr)); if (ret) ret = -EFAULT; } kfree(hdr); break; case RKMODULE_SET_QUICK_STREAM: ret = copy_from_user(&stream, up, sizeof(u32)); if (!ret) ret = sc210iot_ioctl(sd, cmd, &stream); else ret = -EFAULT; break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif static int sc210iot_s_stream(struct v4l2_subdev *sd, int on) { struct sc210iot *sc210iot = to_sc210iot(sd); int ret = 0; mutex_lock(&sc210iot->lock); on = !!on; if (on == sc210iot->streaming) goto unlock_and_return; if (on) { if (sc210iot->is_thunderboot && rkisp_tb_get_state() == RKISP_TB_NG) { sc210iot->is_thunderboot = false; __sc210iot_power_on(sc210iot); } ret = pm_runtime_get_sync(sc210iot->dev); if (ret < 0) { pm_runtime_put_noidle(sc210iot->dev); goto unlock_and_return; } ret = __sc210iot_start_stream(sc210iot); if (ret) { dev_err(sc210iot->dev, "Failed to start sc210iot stream\n"); pm_runtime_put(sc210iot->dev); goto unlock_and_return; } } else { __sc210iot_stop_stream(sc210iot); pm_runtime_put(sc210iot->dev); } sc210iot->streaming = on; unlock_and_return: mutex_unlock(&sc210iot->lock); return 0; } static int sc210iot_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct sc210iot *sc210iot = to_sc210iot(sd); const struct sc210iot_mode *mode = sc210iot->cur_mode; if (sc210iot->streaming) fi->interval = sc210iot->cur_fps; else fi->interval = mode->max_fps; return 0; } static int sc210iot_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad_id, struct v4l2_mbus_config *config) { config->type = V4L2_MBUS_CSI2_DPHY; config->bus.mipi_csi2.num_data_lanes = SC210IOT_LANES; return 0; } static int sc210iot_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { if (code->index != 0) return -EINVAL; code->code = SC210IOT_MEDIA_BUS_FMT; return 0; } static int sc210iot_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { struct sc210iot *sc210iot = to_sc210iot(sd); if (fse->index >= sc210iot->cfg_num) return -EINVAL; if (fse->code != SC210IOT_MEDIA_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 sc210iot_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval_enum *fie) { struct sc210iot *sc210iot = to_sc210iot(sd); if (fie->index >= sc210iot->cfg_num) return -EINVAL; fie->code = SC210IOT_MEDIA_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 int sc210iot_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct sc210iot *sc210iot = to_sc210iot(sd); const struct sc210iot_mode *mode; s64 h_blank, vblank_def; mutex_lock(&sc210iot->lock); mode = v4l2_find_nearest_size(supported_modes, ARRAY_SIZE(supported_modes), width, height, fmt->format.width, fmt->format.height); fmt->format.code = SC210IOT_MEDIA_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(&sc210iot->lock); return -ENOTTY; #endif } else { sc210iot->cur_mode = mode; __v4l2_ctrl_s_ctrl(sc210iot->link_freq, mode->link_freq_index); __v4l2_ctrl_s_ctrl_int64(sc210iot->pixel_rate, to_pixel_rate(mode->link_freq_index)); h_blank = mode->hts_def - mode->width; __v4l2_ctrl_modify_range(sc210iot->hblank, h_blank, h_blank, 1, h_blank); vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(sc210iot->vblank, vblank_def, SC210IOT_VTS_MAX - mode->height, 1, vblank_def); sc210iot->cur_fps = mode->max_fps; sc210iot->cur_vts = mode->vts_def; } mutex_unlock(&sc210iot->lock); return 0; } static int sc210iot_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct sc210iot *sc210iot = to_sc210iot(sd); const struct sc210iot_mode *mode = sc210iot->cur_mode; mutex_lock(&sc210iot->lock); 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(&sc210iot->lock); return -ENOTTY; #endif } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = SC210IOT_MEDIA_BUS_FMT; fmt->format.field = V4L2_FIELD_NONE; fmt->reserved[0] = mode->vc[PAD0]; } mutex_unlock(&sc210iot->lock); return 0; } #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int sc210iot_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct sc210iot *sc210iot = to_sc210iot(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->state, 0); const struct sc210iot_mode *def_mode = &supported_modes[0]; mutex_lock(&sc210iot->lock); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = SC210IOT_MEDIA_BUS_FMT; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&sc210iot->lock); return 0; } #endif #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops sc210iot_internal_ops = { .open = sc210iot_open, }; #endif static int sc210iot_s_power(struct v4l2_subdev *sd, int on) { struct sc210iot *sc210iot = to_sc210iot(sd); int ret = 0; mutex_lock(&sc210iot->lock); if (sc210iot->power_on == !!on) goto unlock_and_return; if (on) { ret = pm_runtime_get_sync(sc210iot->dev); if (ret < 0) { pm_runtime_put_noidle(sc210iot->dev); goto unlock_and_return; } if (!sc210iot->is_thunderboot) { ret |= sc210iot_write_reg(sc210iot, SC210IOT_SOFTWARE_RESET_REG, 0x01); usleep_range(100, 200); } sc210iot->power_on = true; } else { pm_runtime_put(sc210iot->dev); sc210iot->power_on = false; } unlock_and_return: mutex_unlock(&sc210iot->lock); return ret; } static const struct v4l2_subdev_core_ops sc210iot_core_ops = { .s_power = sc210iot_s_power, .ioctl = sc210iot_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = sc210iot_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops sc210iot_video_ops = { .s_stream = sc210iot_s_stream, .g_frame_interval = sc210iot_g_frame_interval, }; static const struct v4l2_subdev_pad_ops sc210iot_pad_ops = { .enum_mbus_code = sc210iot_enum_mbus_code, .enum_frame_size = sc210iot_enum_frame_sizes, .enum_frame_interval = sc210iot_enum_frame_interval, .get_fmt = sc210iot_get_fmt, .set_fmt = sc210iot_set_fmt, .get_mbus_config = sc210iot_g_mbus_config, }; static const struct v4l2_subdev_ops sc210iot_subdev_ops = { .core = &sc210iot_core_ops, .video = &sc210iot_video_ops, .pad = &sc210iot_pad_ops, }; static int sc210iot_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc210iot *sc210iot = to_sc210iot(sd); __sc210iot_power_on(sc210iot); return 0; } static int sc210iot_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc210iot *sc210iot = to_sc210iot(sd); __sc210iot_power_off(sc210iot); return 0; } static const struct dev_pm_ops sc210iot_pm_ops = { SET_RUNTIME_PM_OPS(sc210iot_runtime_suspend, sc210iot_runtime_resume, NULL) }; static int sc210iot_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct sc210iot *sc210iot; 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); sc210iot = devm_kzalloc(dev, sizeof(*sc210iot), GFP_KERNEL); if (!sc210iot) return -ENOMEM; sc210iot->dev = dev; sc210iot->regmap = devm_regmap_init_i2c(client, &sc210iot_regmap_config); if (IS_ERR(sc210iot->regmap)) { dev_err(dev, "Failed to initialize I2C\n"); return -ENODEV; } ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &sc210iot->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &sc210iot->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &sc210iot->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &sc210iot->len_name); if (ret) { dev_err(dev, "Failed to get module information\n"); return -EINVAL; } sc210iot->is_thunderboot = IS_ENABLED(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP); sc210iot->xvclk = devm_clk_get(sc210iot->dev, "xvclk"); if (IS_ERR(sc210iot->xvclk)) { dev_err(sc210iot->dev, "Failed to get xvclk\n"); return -EINVAL; } sc210iot->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_ASIS); if (IS_ERR(sc210iot->reset_gpio)) dev_warn(dev, "Failed to get reset-gpios\n"); sc210iot->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_ASIS); if (IS_ERR(sc210iot->pwdn_gpio)) dev_warn(dev, "Failed to get pwdn-gpios\n"); ret = sc210iot_get_regulators(sc210iot); if (ret) { dev_err(dev, "Failed to get regulators\n"); return ret; } sc210iot->pinctrl = devm_pinctrl_get(dev); if (!IS_ERR(sc210iot->pinctrl)) { sc210iot->pins_default = pinctrl_lookup_state(sc210iot->pinctrl, OF_CAMERA_PINCTRL_STATE_DEFAULT); if (IS_ERR(sc210iot->pins_default)) dev_info(dev, "could not get default pinstate\n"); sc210iot->pins_sleep = pinctrl_lookup_state(sc210iot->pinctrl, OF_CAMERA_PINCTRL_STATE_SLEEP); if (IS_ERR(sc210iot->pins_sleep)) dev_info(dev, "could not get sleep pinstate\n"); } else { dev_info(dev, "no pinctrl\n"); } mutex_init(&sc210iot->lock); /* set default mode */ sc210iot->cur_mode = &supported_modes[0]; sc210iot->cfg_num = ARRAY_SIZE(supported_modes); sd = &sc210iot->subdev; v4l2_i2c_subdev_init(sd, client, &sc210iot_subdev_ops); ret = sc210iot_initialize_controls(sc210iot); if (ret) goto err_destroy_mutex; ret = __sc210iot_power_on(sc210iot); if (ret) goto err_free_handler; ret = sc210iot_check_sensor_id(sc210iot); if (ret) goto err_power_off; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API sd->internal_ops = &sc210iot_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; #endif #ifdef CONFIG_MEDIA_CONTROLLER sc210iot->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &sc210iot->pad); if (ret < 0) goto err_power_off; #endif memset(facing, 0, sizeof(facing)); if (strcmp(sc210iot->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", sc210iot->module_index, facing, SC210IOT_NAME, dev_name(sd->dev)); ret = v4l2_async_register_subdev_sensor(sd); if (ret) { dev_err(dev, "Failed to register v4l2 async subdev\n"); goto err_clean_entity; } pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_idle(dev); return 0; err_clean_entity: #ifdef CONFIG_MEDIA_CONTROLLER media_entity_cleanup(&sd->entity); #endif err_power_off: __sc210iot_power_off(sc210iot); err_free_handler: v4l2_ctrl_handler_free(&sc210iot->ctrl_handler); err_destroy_mutex: mutex_destroy(&sc210iot->lock); return ret; } static void sc210iot_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct sc210iot *sc210iot = to_sc210iot(sd); v4l2_async_unregister_subdev(sd); #ifdef CONFIG_MEDIA_CONTROLLER media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(&sc210iot->ctrl_handler); mutex_destroy(&sc210iot->lock); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) __sc210iot_power_off(sc210iot); pm_runtime_set_suspended(&client->dev); } static const struct i2c_device_id sc210iot_match_id[] = { { "sc210iot", 0 }, { }, }; static const struct of_device_id sc210iot_of_match[] = { { .compatible = "smartsens,sc210iot" }, {}, }; MODULE_DEVICE_TABLE(of, sc210iot_of_match); static struct i2c_driver sc210iot_i2c_driver = { .driver = { .name = SC210IOT_NAME, .pm = &sc210iot_pm_ops, .of_match_table = of_match_ptr(sc210iot_of_match), }, .probe = &sc210iot_probe, .remove = &sc210iot_remove, .id_table = sc210iot_match_id, }; static int __init sensor_mod_init(void) { return i2c_add_driver(&sc210iot_i2c_driver); } static void __exit sensor_mod_exit(void) { i2c_del_driver(&sc210iot_i2c_driver); } device_initcall_sync(sensor_mod_init); module_exit(sensor_mod_exit); MODULE_DESCRIPTION("Smartsens sc210iot Image Sensor driver"); MODULE_LICENSE("GPL v2");