// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2023 Rockchip Electronics Co., Ltd. * * lt8668sx HDMI to MIPI CSI-2 bridge driver. * * Author: Jianwei Fan * * V0.0X01.0X00 first version. * */ #include #include #include #include #include #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, 0x00) static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "debug level (0-3)"); #define I2C_MAX_XFER_SIZE 128 #define POLL_INTERVAL_MS 1000 #define LT8668SX_LINK_FREQ_1250M 1250000000 #define LT8668SX_LINK_FREQ_1000M 1000000000 #define LT8668SX_LINK_FREQ_900M 900000000 #define LT8668SX_LINK_FREQ_700M 700000000 #define LT8668SX_LINK_FREQ_650M 650000000 #define LT8668SX_LINK_FREQ_600M 600000000 #define LT8668SX_LINK_FREQ_490M 490000000 #define LT8668SX_LINK_FREQ_400M 400000000 #define LT8668SX_LINK_FREQ_300M 300000000 #define LT8668SX_LINK_FREQ_250M 250000000 #define LT8668SX_LINK_FREQ_200M 200000000 #define LT8668SX_LINK_FREQ_100M 100000000 #define LT8668SX_PIXEL_RATE 800000000 #define LT8668SX_CHIPID 0x0119 #define CHIPID_REGH 0xe101 #define CHIPID_REGL 0xe100 #define I2C_EN_REG 0xe0ee #define I2C_ENABLE 0x1 #define I2C_DISABLE 0x0 #define HACT_H 0xe090 #define HACT_L 0xe091 #define VACT_H 0xe092 #define VACT_L 0xe093 #define PCLK_H 0xe095 #define PCLK_M 0xe096 #define PCLK_L 0xe097 #define FRAMERATE 0xe094 #define AUDIO_FS_VALUE 0xe098 #define INTERLACED 0xe099 #define LT8668SX_NAME "LT8668SX" static const s64 link_freq_dphy_menu_items[] = { LT8668SX_LINK_FREQ_1250M, LT8668SX_LINK_FREQ_650M, LT8668SX_LINK_FREQ_490M, LT8668SX_LINK_FREQ_300M, LT8668SX_LINK_FREQ_200M, LT8668SX_LINK_FREQ_100M, }; static const s64 link_freq_cphy_menu_items[] = { LT8668SX_LINK_FREQ_900M, LT8668SX_LINK_FREQ_700M, LT8668SX_LINK_FREQ_400M, LT8668SX_LINK_FREQ_200M, LT8668SX_LINK_FREQ_100M, }; static const s64 link_freq_cphy_rgb_menu_items[] = { LT8668SX_LINK_FREQ_1250M, LT8668SX_LINK_FREQ_1000M, LT8668SX_LINK_FREQ_600M, LT8668SX_LINK_FREQ_300M, LT8668SX_LINK_FREQ_200M, }; struct lt8668sx { struct v4l2_mbus_config_mipi_csi2 bus; struct v4l2_subdev sd; struct media_pad pad; struct v4l2_ctrl_handler hdl; struct i2c_client *i2c_client; struct mutex confctl_mutex; struct v4l2_ctrl *detect_tx_5v_ctrl; struct v4l2_ctrl *audio_sampling_rate_ctrl; struct v4l2_ctrl *audio_present_ctrl; struct v4l2_ctrl *link_freq; struct v4l2_ctrl *pixel_rate; struct delayed_work delayed_work_hotplug; struct delayed_work delayed_work_res_change; struct v4l2_dv_timings timings; struct clk *xvclk; struct gpio_desc *reset_gpio; struct gpio_desc *plugin_det_gpio; struct gpio_desc *power_gpio; struct work_struct work_i2c_poll; struct timer_list timer; const char *module_facing; const char *module_name; const char *len_name; const struct lt8668sx_mode *cur_mode; const struct lt8668sx_mode *support_modes; u32 cfg_num; struct v4l2_fwnode_endpoint bus_cfg; bool nosignal; bool enable_hdcp; bool is_audio_present; bool power_on; int plugin_irq; u32 mbus_fmt_code; u32 module_index; u32 audio_sampling_rate; u32 cur_framerate; u32 last_framerate; }; static const struct v4l2_dv_timings_cap lt8668sx_timings_cap = { .type = V4L2_DV_BT_656_1120, .reserved = { 0 }, V4L2_INIT_BT_TIMINGS(1, 10000, 1, 10000, 0, 800000000, V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT, V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_REDUCED_BLANKING | V4L2_DV_BT_CAP_CUSTOM) }; struct lt8668sx_mode { u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; u32 mipi_freq_idx; }; static struct rkmodule_csi_dphy_param rk3588_dcphy_param = { .vendor = PHY_VENDOR_SAMSUNG, .lp_vol_ref = 3, .lp_hys_sw = {3, 0, 0, 0}, .lp_escclk_pol_sel = {1, 0, 0, 0}, .skew_data_cal_clk = {0, 3, 3, 3}, .clk_hs_term_sel = 2, .data_hs_term_sel = {2, 2, 2, 2}, .reserved = {0}, }; static const struct lt8668sx_mode supported_modes_dphy[] = { { .width = 4096, .height = 2160, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 4400, .vts_def = 2250, .mipi_freq_idx = 0, }, { .width = 3840, .height = 2160, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 4400, .vts_def = 2250, .mipi_freq_idx = 0, }, { .width = 3840, .height = 2160, .max_fps = { .numerator = 10000, .denominator = 300000, }, .hts_def = 4400, .vts_def = 2250, .mipi_freq_idx = 1, }, { .width = 2560, .height = 1440, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 2720, .vts_def = 1481, .mipi_freq_idx = 2, }, { .width = 1920, .height = 1080, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 2200, .vts_def = 1125, .mipi_freq_idx = 3, }, { .width = 1600, .height = 1200, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 2160, .vts_def = 1250, .mipi_freq_idx = 3, }, { .width = 1280, .height = 960, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 1712, .vts_def = 994, .mipi_freq_idx = 4, }, { .width = 1280, .height = 720, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 1650, .vts_def = 750, .mipi_freq_idx = 4, }, { .width = 800, .height = 600, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 1056, .vts_def = 628, .mipi_freq_idx = 5, }, { .width = 720, .height = 576, .max_fps = { .numerator = 10000, .denominator = 500000, }, .hts_def = 864, .vts_def = 625, .mipi_freq_idx = 5, }, { .width = 720, .height = 480, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 858, .vts_def = 525, .mipi_freq_idx = 5, }, }; static const struct lt8668sx_mode supported_modes_cphy[] = { { .width = 5120, .height = 2160, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 5500, .vts_def = 2250, .mipi_freq_idx = 0, }, { .width = 4096, .height = 2160, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 4400, .vts_def = 2250, .mipi_freq_idx = 1, }, { .width = 3840, .height = 2160, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 4400, .vts_def = 2250, .mipi_freq_idx = 1, }, { .width = 3840, .height = 2160, .max_fps = { .numerator = 10000, .denominator = 300000, }, .hts_def = 4400, .vts_def = 2250, .mipi_freq_idx = 2, }, { .width = 2560, .height = 1440, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 2720, .vts_def = 1481, .mipi_freq_idx = 2, }, { .width = 1920, .height = 1080, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 2200, .vts_def = 1125, .mipi_freq_idx = 3, }, { .width = 1280, .height = 720, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 1650, .vts_def = 750, .mipi_freq_idx = 4, }, { .width = 1024, .height = 768, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 1344, .vts_def = 806, .mipi_freq_idx = 4, }, { .width = 800, .height = 600, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 1056, .vts_def = 628, .mipi_freq_idx = 4, }, { .width = 720, .height = 576, .max_fps = { .numerator = 10000, .denominator = 500000, }, .hts_def = 864, .vts_def = 625, .mipi_freq_idx = 4, }, { .width = 720, .height = 480, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 858, .vts_def = 525, .mipi_freq_idx = 4, }, }; static void lt8668sx_format_change(struct v4l2_subdev *sd); static int lt8668sx_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd); static int lt8668sx_s_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings); static inline struct lt8668sx *to_lt8668sx(struct v4l2_subdev *sd) { return container_of(sd, struct lt8668sx, sd); } static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); struct i2c_client *client = lt8668sx->i2c_client; int err; u8 buf[2] = { 0xFF, reg >> 8}; u8 reg_addr = reg & 0xFF; struct i2c_msg msgs[3]; msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = 2; msgs[0].buf = buf; msgs[1].addr = client->addr; msgs[1].flags = 0; msgs[1].len = 1; msgs[1].buf = ®_addr; msgs[2].addr = client->addr; msgs[2].flags = I2C_M_RD; msgs[2].len = n; msgs[2].buf = values; err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (err != ARRAY_SIZE(msgs)) { v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n", __func__, reg, client->addr); } } static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); struct i2c_client *client = lt8668sx->i2c_client; int err, i; struct i2c_msg msgs[2]; u8 data[I2C_MAX_XFER_SIZE]; u8 buf[2] = { 0xFF, reg >> 8}; if ((1 + n) > I2C_MAX_XFER_SIZE) { n = I2C_MAX_XFER_SIZE - 1; v4l2_warn(sd, "i2c wr reg=%04x: len=%d is too big!\n", reg, 1 + n); } msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = 2; msgs[0].buf = buf; msgs[1].addr = client->addr; msgs[1].flags = 0; msgs[1].len = 1 + n; msgs[1].buf = data; data[0] = reg & 0xff; for (i = 0; i < n; i++) data[1 + i] = values[i]; err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (err < 0) { v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n", __func__, reg, client->addr); return; } } static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg) { u32 val; i2c_rd(sd, reg, (u8 __force *)&val, 1); return val; } static __maybe_unused void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val) { i2c_wr(sd, reg, &val, 1); } static void lt8668sx_i2c_enable(struct v4l2_subdev *sd) { i2c_wr8(sd, I2C_EN_REG, I2C_ENABLE); } static void lt8668sx_i2c_disable(struct v4l2_subdev *sd) { i2c_wr8(sd, I2C_EN_REG, I2C_DISABLE); } static inline bool tx_5v_power_present(struct v4l2_subdev *sd) { bool ret; int val, i, cnt; struct lt8668sx *lt8668sx = to_lt8668sx(sd); /* if not use plugin det gpio */ if (!lt8668sx->plugin_det_gpio) return true; cnt = 0; for (i = 0; i < 5; i++) { val = gpiod_get_value(lt8668sx->plugin_det_gpio); if (val > 0) cnt++; usleep_range(500, 600); } ret = (cnt >= 3) ? true : false; v4l2_dbg(1, debug, sd, "%s: %d\n", __func__, ret); return ret; } static inline bool no_signal(struct v4l2_subdev *sd) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); v4l2_dbg(1, debug, sd, "%s no signal:%d\n", __func__, lt8668sx->nosignal); return lt8668sx->nosignal; } static inline bool audio_present(struct v4l2_subdev *sd) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); return lt8668sx->is_audio_present; } static int get_audio_sampling_rate(struct v4l2_subdev *sd) { static const int code_to_rate[] = { 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800, 88200, 768000, 96000, 705600, 176400, 0, 192000, 0 }; if (no_signal(sd)) return 0; return code_to_rate[2]; } static inline unsigned int fps_calc(const struct v4l2_bt_timings *t) { if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t)) return 0; return DIV_ROUND_CLOSEST((unsigned int)t->pixelclock, V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t)); } static bool lt8668sx_rcv_supported_res(struct v4l2_subdev *sd, u32 width, u32 height) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); u32 i; for (i = 0; i < lt8668sx->cfg_num; i++) { if ((lt8668sx->support_modes[i].width == width) && (lt8668sx->support_modes[i].height == height)) { break; } } if (i == lt8668sx->cfg_num) { v4l2_err(sd, "%s do not support res wxh: %dx%d\n", __func__, width, height); return false; } else { return true; } } static int lt8668sx_get_detected_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); struct v4l2_bt_timings *bt = &timings->bt; u32 hact, vact; u32 pixel_clock, fps, halt_pix_clk; u8 clk_h, clk_m, clk_l; u8 val_h, val_l; u8 interlaced, audio_rate; memset(timings, 0, sizeof(struct v4l2_dv_timings)); clk_h = i2c_rd8(sd, PCLK_H); clk_m = i2c_rd8(sd, PCLK_M); clk_l = i2c_rd8(sd, PCLK_L); halt_pix_clk = ((clk_h << 16) | (clk_m << 8) | clk_l); pixel_clock = halt_pix_clk * 1000; val_h = i2c_rd8(sd, HACT_H); val_l = i2c_rd8(sd, HACT_L); hact = ((val_h << 8) | val_l); val_h = i2c_rd8(sd, VACT_H); val_l = i2c_rd8(sd, VACT_L); vact = (val_h << 8) | val_l; fps = i2c_rd8(sd, FRAMERATE); interlaced = i2c_rd8(sd, INTERLACED); audio_rate = i2c_rd8(sd, AUDIO_FS_VALUE); lt8668sx->nosignal = false; lt8668sx->is_audio_present = true; timings->type = V4L2_DV_BT_656_1120; bt->interlaced = interlaced; bt->width = hact; bt->height = vact; bt->pixelclock = pixel_clock; lt8668sx->cur_framerate = fps; lt8668sx->audio_sampling_rate = audio_rate; v4l2_info(sd, "act:%dx%d, pixclk:%d, fps:%d, inerlaced:%d, audio_rate:%dk\n", hact, vact, pixel_clock, fps, interlaced, audio_rate); if (!lt8668sx_rcv_supported_res(sd, hact, vact)) { lt8668sx->nosignal = true; v4l2_err(sd, "%s: rcv err res, return no signal!\n", __func__); return -EINVAL; } return 0; } static void lt8668sx_delayed_work_hotplug(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct lt8668sx *lt8668sx = container_of(dwork, struct lt8668sx, delayed_work_hotplug); struct v4l2_subdev *sd = <8668sx->sd; lt8668sx_s_ctrl_detect_tx_5v(sd); } static void lt8668sx_delayed_work_res_change(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct lt8668sx *lt8668sx = container_of(dwork, struct lt8668sx, delayed_work_res_change); struct v4l2_subdev *sd = <8668sx->sd; lt8668sx_format_change(sd); } static int lt8668sx_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); return v4l2_ctrl_s_ctrl(lt8668sx->detect_tx_5v_ctrl, tx_5v_power_present(sd)); } static int lt8668sx_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); return v4l2_ctrl_s_ctrl(lt8668sx->audio_sampling_rate_ctrl, get_audio_sampling_rate(sd)); } static int lt8668sx_s_ctrl_audio_present(struct v4l2_subdev *sd) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); return v4l2_ctrl_s_ctrl(lt8668sx->audio_present_ctrl, audio_present(sd)); } static int lt8668sx_update_controls(struct v4l2_subdev *sd) { int ret = 0; ret |= lt8668sx_s_ctrl_detect_tx_5v(sd); ret |= lt8668sx_s_ctrl_audio_sampling_rate(sd); ret |= lt8668sx_s_ctrl_audio_present(sd); return ret; } static bool lt8668sx_match_timings(struct lt8668sx *lt8668sx, const struct v4l2_dv_timings *t1, const struct v4l2_dv_timings *t2) { if (t1->type != t2->type || t1->type != V4L2_DV_BT_656_1120) return false; if (t1->bt.width == t2->bt.width && t1->bt.height == t2->bt.height && t1->bt.interlaced == t2->bt.interlaced && lt8668sx->cur_framerate == lt8668sx->last_framerate) return true; return false; } static int lt8668sx_get_reso_dist(struct lt8668sx *lt8668sx, const struct lt8668sx_mode *mode, struct v4l2_dv_timings *timings) { struct v4l2_bt_timings *bt = &timings->bt; u32 cur_fps, dist_fps; cur_fps = lt8668sx->cur_framerate; dist_fps = DIV_ROUND_CLOSEST(mode->max_fps.denominator, mode->max_fps.numerator); return abs(mode->width - bt->width) + abs(mode->height - bt->height) + abs(dist_fps - cur_fps); } static const struct lt8668sx_mode * lt8668sx_find_best_fit(struct v4l2_subdev *sd) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); int dist; int cur_best_fit = 0; int cur_best_fit_dist = -1; unsigned int i; for (i = 0; i < lt8668sx->cfg_num; i++) { dist = lt8668sx_get_reso_dist(lt8668sx, <8668sx->support_modes[i], <8668sx->timings); if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) { cur_best_fit_dist = dist; cur_best_fit = i; } } v4l2_info(sd, "find current mode: support_mode[%d], %dx%d@%dfps\n", cur_best_fit, lt8668sx->support_modes[cur_best_fit].width, lt8668sx->support_modes[cur_best_fit].height, DIV_ROUND_CLOSEST(lt8668sx->support_modes[cur_best_fit].max_fps.denominator, lt8668sx->support_modes[cur_best_fit].max_fps.numerator)); return <8668sx->support_modes[cur_best_fit]; } static void lt8668sx_print_dv_timings(struct v4l2_subdev *sd, const char *prefix) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); const struct v4l2_bt_timings *bt = <8668sx->timings.bt; const struct lt8668sx_mode *mode; u32 htot, vtot; u32 fps; mode = lt8668sx_find_best_fit(sd); lt8668sx->cur_mode = mode; htot = lt8668sx->cur_mode->hts_def; vtot = lt8668sx->cur_mode->vts_def; if (bt->interlaced) vtot /= 2; fps = lt8668sx->cur_framerate; if (prefix == NULL) prefix = ""; v4l2_info(sd, "%s: %s%ux%u%s%u (%ux%u)\n", sd->name, prefix, bt->width, bt->height, bt->interlaced ? "i" : "p", fps, htot, vtot); } static void lt8668sx_format_change(struct v4l2_subdev *sd) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); struct v4l2_dv_timings timings; const struct v4l2_event lt8668sx_ev_fmt = { .type = V4L2_EVENT_SOURCE_CHANGE, .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, }; struct v4l2_dv_timings default_timing = V4L2_DV_BT_CEA_640X480P59_94; if (lt8668sx_get_detected_timings(sd, &timings)) { timings = default_timing; v4l2_dbg(1, debug, sd, "%s: No signal\n", __func__); } if (!lt8668sx_match_timings(lt8668sx, <8668sx->timings, &timings)) { /* automatically set timing rather than set by user */ lt8668sx_s_dv_timings(sd, &timings); lt8668sx_print_dv_timings(sd, "Format_change: New format: "); if (sd->devnode && !lt8668sx->i2c_client->irq) v4l2_subdev_notify_event(sd, <8668sx_ev_fmt); } if (sd->devnode && lt8668sx->i2c_client->irq) v4l2_subdev_notify_event(sd, <8668sx_ev_fmt); } static int lt8668sx_isr(struct v4l2_subdev *sd, u32 status, bool *handled) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); schedule_delayed_work(<8668sx->delayed_work_res_change, HZ / 20); *handled = true; return 0; } static irqreturn_t lt8668sx_res_change_irq_handler(int irq, void *dev_id) { struct lt8668sx *lt8668sx = dev_id; bool handled; lt8668sx_isr(<8668sx->sd, 0, &handled); return handled ? IRQ_HANDLED : IRQ_NONE; } static irqreturn_t plugin_detect_irq_handler(int irq, void *dev_id) { struct lt8668sx *lt8668sx = dev_id; schedule_delayed_work(<8668sx->delayed_work_hotplug, 100); return IRQ_HANDLED; } static void lt8668sx_irq_poll_timer(struct timer_list *t) { struct lt8668sx *lt8668sx = from_timer(lt8668sx, t, timer); schedule_work(<8668sx->work_i2c_poll); mod_timer(<8668sx->timer, jiffies + msecs_to_jiffies(POLL_INTERVAL_MS)); } static void lt8668sx_work_i2c_poll(struct work_struct *work) { struct lt8668sx *lt8668sx = container_of(work, struct lt8668sx, work_i2c_poll); struct v4l2_subdev *sd = <8668sx->sd; lt8668sx_format_change(sd); } static int lt8668sx_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, struct v4l2_event_subscription *sub) { switch (sub->type) { case V4L2_EVENT_SOURCE_CHANGE: return v4l2_src_change_event_subdev_subscribe(sd, fh, sub); case V4L2_EVENT_CTRL: return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub); default: return -EINVAL; } } static int lt8668sx_g_input_status(struct v4l2_subdev *sd, u32 *status) { *status = 0; *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0; v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status); return 0; } static int lt8668sx_s_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); if (!timings) return -EINVAL; if (debug) v4l2_print_dv_timings(sd->name, "s_dv_timings: ", timings, false); if (lt8668sx_match_timings(lt8668sx, <8668sx->timings, timings)) { v4l2_dbg(1, debug, sd, "%s: no change\n", __func__); return 0; } lt8668sx->timings = *timings; lt8668sx->last_framerate = lt8668sx->cur_framerate; return 0; } static int lt8668sx_g_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); *timings = lt8668sx->timings; return 0; } static int lt8668sx_enum_dv_timings(struct v4l2_subdev *sd, struct v4l2_enum_dv_timings *timings) { if (timings->pad != 0) return -EINVAL; return v4l2_enum_dv_timings_cap(timings, <8668sx_timings_cap, NULL, NULL); } static int lt8668sx_query_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); *timings = lt8668sx->timings; if (debug) v4l2_print_dv_timings(sd->name, "query_dv_timings: ", timings, false); if (!v4l2_valid_dv_timings(timings, <8668sx_timings_cap, NULL, NULL)) { v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__); return -ERANGE; } return 0; } static int lt8668sx_dv_timings_cap(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap) { if (cap->pad != 0) return -EINVAL; *cap = lt8668sx_timings_cap; return 0; } static int lt8668sx_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *cfg) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); cfg->type = lt8668sx->bus_cfg.bus_type; cfg->bus.mipi_csi2 = lt8668sx->bus_cfg.bus.mipi_csi2; return 0; } static int lt8668sx_s_stream(struct v4l2_subdev *sd, int on) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); const struct lt8668sx_mode *mode; mode = lt8668sx_find_best_fit(sd); lt8668sx->cur_mode = mode; v4l2_info(sd, "%s: on: %d, %dx%d@%d\n", __func__, on, lt8668sx->cur_mode->width, lt8668sx->cur_mode->height, DIV_ROUND_CLOSEST(lt8668sx->cur_mode->max_fps.denominator, lt8668sx->cur_mode->max_fps.numerator)); msleep(100); return 0; } static int lt8668sx_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); switch (code->index) { case 0: code->code = lt8668sx->mbus_fmt_code; break; default: return -EINVAL; } return 0; } static int lt8668sx_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); if (fse->index >= lt8668sx->cfg_num) return -EINVAL; if (fse->code != lt8668sx->mbus_fmt_code) return -EINVAL; fse->min_width = lt8668sx->support_modes[fse->index].width; fse->max_width = lt8668sx->support_modes[fse->index].width; fse->max_height = lt8668sx->support_modes[fse->index].height; fse->min_height = lt8668sx->support_modes[fse->index].height; return 0; } static int lt8668sx_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); const struct lt8668sx_mode *mode; mutex_lock(<8668sx->confctl_mutex); format->format.code = lt8668sx->mbus_fmt_code; format->format.width = lt8668sx->timings.bt.width; format->format.height = lt8668sx->timings.bt.height; format->format.field = lt8668sx->timings.bt.interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE; format->format.colorspace = V4L2_COLORSPACE_SRGB; mutex_unlock(<8668sx->confctl_mutex); mode = lt8668sx_find_best_fit(sd); lt8668sx->cur_mode = mode; __v4l2_ctrl_s_ctrl_int64(lt8668sx->pixel_rate, LT8668SX_PIXEL_RATE); __v4l2_ctrl_s_ctrl(lt8668sx->link_freq, mode->mipi_freq_idx); v4l2_dbg(1, debug, sd, "%s: mode->mipi_freq_idx(%d)", __func__, mode->mipi_freq_idx); v4l2_dbg(1, debug, sd, "%s: fmt code:%d, w:%d, h:%d, field code:%d\n", __func__, format->format.code, format->format.width, format->format.height, format->format.field); return 0; } static int lt8668sx_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval_enum *fie) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); if (fie->index >= lt8668sx->cfg_num) return -EINVAL; fie->code = lt8668sx->mbus_fmt_code; fie->width = lt8668sx->support_modes[fie->index].width; fie->height = lt8668sx->support_modes[fie->index].height; fie->interval = lt8668sx->support_modes[fie->index].max_fps; return 0; } static int lt8668sx_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); const struct lt8668sx_mode *mode; /* is overwritten by get_fmt */ u32 code = format->format.code; int ret = lt8668sx_get_fmt(sd, sd_state, format); format->format.code = code; if (ret) return ret; switch (code) { case MEDIA_BUS_FMT_UYVY8_2X8: break; case MEDIA_BUS_FMT_BGR888_1X24: break; default: return -EINVAL; } if (format->which == V4L2_SUBDEV_FORMAT_TRY) return 0; lt8668sx->mbus_fmt_code = format->format.code; mode = lt8668sx_find_best_fit(sd); lt8668sx->cur_mode = mode; return 0; } static int lt8668sx_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); const struct lt8668sx_mode *mode = lt8668sx->cur_mode; mutex_lock(<8668sx->confctl_mutex); fi->interval = mode->max_fps; mutex_unlock(<8668sx->confctl_mutex); return 0; } static void lt8668sx_get_module_inf(struct lt8668sx *lt8668sx, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strscpy(inf->base.sensor, LT8668SX_NAME, sizeof(inf->base.sensor)); strscpy(inf->base.module, lt8668sx->module_name, sizeof(inf->base.module)); strscpy(inf->base.lens, lt8668sx->len_name, sizeof(inf->base.lens)); } static long lt8668sx_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); long ret = 0; struct rkmodule_csi_dphy_param *dphy_param; switch (cmd) { case RKMODULE_GET_MODULE_INFO: lt8668sx_get_module_inf(lt8668sx, (struct rkmodule_inf *)arg); break; case RKMODULE_GET_HDMI_MODE: *(int *)arg = RKMODULE_HDMIIN_MODE; break; case RKMODULE_SET_CSI_DPHY_PARAM: dphy_param = (struct rkmodule_csi_dphy_param *)arg; if (dphy_param->vendor == PHY_VENDOR_SAMSUNG) rk3588_dcphy_param = *dphy_param; dev_dbg(<8668sx->i2c_client->dev, "sensor set dphy param\n"); break; case RKMODULE_GET_CSI_DPHY_PARAM: dphy_param = (struct rkmodule_csi_dphy_param *)arg; *dphy_param = rk3588_dcphy_param; dev_dbg(<8668sx->i2c_client->dev, "sensor get dphy param\n"); break; default: ret = -ENOIOCTLCMD; break; } return ret; } static int lt8668sx_s_power(struct v4l2_subdev *sd, int on) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); int ret = 0; mutex_lock(<8668sx->confctl_mutex); if (lt8668sx->power_on == !!on) goto unlock_and_return; if (on) lt8668sx->power_on = true; else lt8668sx->power_on = false; unlock_and_return: mutex_unlock(<8668sx->confctl_mutex); return ret; } #ifdef CONFIG_COMPAT static long lt8668sx_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; long ret; int *seq; struct rkmodule_csi_dphy_param *dphy_param; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = lt8668sx_ioctl(sd, cmd, inf); if (!ret) { ret = copy_to_user(up, inf, sizeof(*inf)); if (ret) ret = -EFAULT; } kfree(inf); break; case RKMODULE_GET_HDMI_MODE: seq = kzalloc(sizeof(*seq), GFP_KERNEL); if (!seq) { ret = -ENOMEM; return ret; } ret = lt8668sx_ioctl(sd, cmd, seq); if (!ret) { ret = copy_to_user(up, seq, sizeof(*seq)); if (ret) ret = -EFAULT; } kfree(seq); break; case RKMODULE_SET_CSI_DPHY_PARAM: dphy_param = kzalloc(sizeof(*dphy_param), GFP_KERNEL); if (!dphy_param) { ret = -ENOMEM; return ret; } ret = copy_from_user(dphy_param, up, sizeof(*dphy_param)); if (!ret) ret = lt8668sx_ioctl(sd, cmd, dphy_param); else ret = -EFAULT; kfree(dphy_param); break; case RKMODULE_GET_CSI_DPHY_PARAM: dphy_param = kzalloc(sizeof(*dphy_param), GFP_KERNEL); if (!dphy_param) { ret = -ENOMEM; return ret; } ret = lt8668sx_ioctl(sd, cmd, dphy_param); if (!ret) { ret = copy_to_user(up, dphy_param, sizeof(*dphy_param)); if (ret) ret = -EFAULT; } kfree(dphy_param); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int lt8668sx_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct lt8668sx *lt8668sx = to_lt8668sx(sd); struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->state, 0); const struct lt8668sx_mode *def_mode = <8668sx->support_modes[0]; mutex_lock(<8668sx->confctl_mutex); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = lt8668sx->mbus_fmt_code; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(<8668sx->confctl_mutex); return 0; } #endif #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops lt8668sx_internal_ops = { .open = lt8668sx_open, }; #endif static const struct v4l2_subdev_core_ops lt8668sx_core_ops = { .s_power = lt8668sx_s_power, .interrupt_service_routine = lt8668sx_isr, .subscribe_event = lt8668sx_subscribe_event, .unsubscribe_event = v4l2_event_subdev_unsubscribe, .ioctl = lt8668sx_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = lt8668sx_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops lt8668sx_video_ops = { .g_input_status = lt8668sx_g_input_status, .s_dv_timings = lt8668sx_s_dv_timings, .g_dv_timings = lt8668sx_g_dv_timings, .query_dv_timings = lt8668sx_query_dv_timings, .s_stream = lt8668sx_s_stream, .g_frame_interval = lt8668sx_g_frame_interval, }; static const struct v4l2_subdev_pad_ops lt8668sx_pad_ops = { .enum_mbus_code = lt8668sx_enum_mbus_code, .enum_frame_size = lt8668sx_enum_frame_sizes, .enum_frame_interval = lt8668sx_enum_frame_interval, .set_fmt = lt8668sx_set_fmt, .get_fmt = lt8668sx_get_fmt, .enum_dv_timings = lt8668sx_enum_dv_timings, .dv_timings_cap = lt8668sx_dv_timings_cap, .get_mbus_config = lt8668sx_g_mbus_config, }; static const struct v4l2_subdev_ops lt8668sx_ops = { .core = <8668sx_core_ops, .video = <8668sx_video_ops, .pad = <8668sx_pad_ops, }; static const struct v4l2_ctrl_config lt8668sx_ctrl_audio_sampling_rate = { .id = RK_V4L2_CID_AUDIO_SAMPLING_RATE, .name = "Audio sampling rate", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = 768000, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_READ_ONLY, }; static const struct v4l2_ctrl_config lt8668sx_ctrl_audio_present = { .id = RK_V4L2_CID_AUDIO_PRESENT, .name = "Audio present", .type = V4L2_CTRL_TYPE_BOOLEAN, .min = 0, .max = 1, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_READ_ONLY, }; static int lt8668sx_init_v4l2_ctrls(struct lt8668sx *lt8668sx) { const struct lt8668sx_mode *mode; struct v4l2_subdev *sd; int ret; mode = lt8668sx->cur_mode; sd = <8668sx->sd; ret = v4l2_ctrl_handler_init(<8668sx->hdl, 5); if (ret) return ret; if (lt8668sx->bus_cfg.bus_type == V4L2_MBUS_CSI2_DPHY && lt8668sx->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_2X8) lt8668sx->link_freq = v4l2_ctrl_new_int_menu(<8668sx->hdl, NULL, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq_dphy_menu_items) - 1, 0, link_freq_dphy_menu_items); else if (lt8668sx->bus_cfg.bus_type != V4L2_MBUS_CSI2_DPHY && lt8668sx->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_2X8) lt8668sx->link_freq = v4l2_ctrl_new_int_menu(<8668sx->hdl, NULL, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq_cphy_menu_items) - 1, 0, link_freq_cphy_menu_items); else lt8668sx->link_freq = v4l2_ctrl_new_int_menu(<8668sx->hdl, NULL, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq_cphy_rgb_menu_items) - 1, 0, link_freq_cphy_rgb_menu_items); lt8668sx->pixel_rate = v4l2_ctrl_new_std(<8668sx->hdl, NULL, V4L2_CID_PIXEL_RATE, 0, LT8668SX_PIXEL_RATE, 1, LT8668SX_PIXEL_RATE); lt8668sx->detect_tx_5v_ctrl = v4l2_ctrl_new_std(<8668sx->hdl, NULL, V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0); lt8668sx->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(<8668sx->hdl, <8668sx_ctrl_audio_sampling_rate, NULL); lt8668sx->audio_present_ctrl = v4l2_ctrl_new_custom(<8668sx->hdl, <8668sx_ctrl_audio_present, NULL); sd->ctrl_handler = <8668sx->hdl; if (lt8668sx->hdl.error) { ret = lt8668sx->hdl.error; v4l2_err(sd, "cfg v4l2 ctrls failed! ret:%d\n", ret); return ret; } __v4l2_ctrl_s_ctrl(lt8668sx->link_freq, mode->mipi_freq_idx); __v4l2_ctrl_s_ctrl_int64(lt8668sx->pixel_rate, LT8668SX_PIXEL_RATE); if (lt8668sx_update_controls(sd)) { ret = -ENODEV; v4l2_err(sd, "update v4l2 ctrls failed! ret:%d\n", ret); return ret; } return 0; } #ifdef CONFIG_OF static int lt8668sx_probe_of(struct lt8668sx *lt8668sx) { struct device *dev = <8668sx->i2c_client->dev; struct device_node *node = dev->of_node; struct device_node *ep; int ret; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, <8668sx->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, <8668sx->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, <8668sx->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, <8668sx->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } if (of_property_read_bool(dev->of_node, "output-rgb")) lt8668sx->mbus_fmt_code = MEDIA_BUS_FMT_BGR888_1X24; lt8668sx->power_gpio = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW); if (IS_ERR(lt8668sx->power_gpio)) { dev_err(dev, "failed to get power gpio\n"); ret = PTR_ERR(lt8668sx->power_gpio); return ret; } lt8668sx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(lt8668sx->reset_gpio)) { dev_err(dev, "failed to get reset gpio\n"); ret = PTR_ERR(lt8668sx->reset_gpio); return ret; } lt8668sx->plugin_det_gpio = devm_gpiod_get_optional(dev, "plugin-det", GPIOD_IN); if (IS_ERR(lt8668sx->plugin_det_gpio)) { dev_err(dev, "failed to get plugin det gpio\n"); ret = PTR_ERR(lt8668sx->plugin_det_gpio); return ret; } ep = of_graph_get_next_endpoint(dev->of_node, NULL); if (!ep) { dev_err(dev, "missing endpoint node\n"); return -EINVAL; } ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), <8668sx->bus_cfg); if (ret) { dev_err(dev, "failed to parse endpoint\n"); goto put_node; } if (lt8668sx->bus_cfg.bus_type == V4L2_MBUS_CSI2_DPHY) { lt8668sx->support_modes = supported_modes_dphy; lt8668sx->cfg_num = ARRAY_SIZE(supported_modes_dphy); } else { lt8668sx->support_modes = supported_modes_cphy; lt8668sx->cfg_num = ARRAY_SIZE(supported_modes_cphy); } lt8668sx->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(lt8668sx->xvclk)) { dev_err(dev, "failed to get xvclk\n"); ret = -EINVAL; goto put_node; } ret = clk_prepare_enable(lt8668sx->xvclk); if (ret) { dev_err(dev, "Failed! to enable xvclk\n"); goto put_node; } lt8668sx->enable_hdcp = false; ret = 0; put_node: of_node_put(ep); return ret; } #else static inline int lt8668sx_probe_of(struct lt8668sx *state) { return -ENODEV; } #endif static int __lt8668sx_power_on(struct lt8668sx *lt8668sx) { struct device *dev = <8668sx->i2c_client->dev; dev_info(dev, "lt8668sx power on\n"); gpiod_set_value(lt8668sx->reset_gpio, 1); usleep_range(20000, 25000); gpiod_set_value(lt8668sx->power_gpio, 1); //delay 20ms before reset usleep_range(25000, 30000); gpiod_set_value(lt8668sx->reset_gpio, 0); usleep_range(25000, 30000); return 0; } static void __lt8668sx_power_off(struct lt8668sx *lt8668sx) { struct device *dev = <8668sx->i2c_client->dev; dev_info(dev, "lt8668sx power off\n"); if (!IS_ERR(lt8668sx->reset_gpio)) gpiod_set_value(lt8668sx->reset_gpio, 1); if (!IS_ERR(lt8668sx->power_gpio)) gpiod_set_value(lt8668sx->power_gpio, 0); } static int lt8668sx_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct lt8668sx *lt8668sx = to_lt8668sx(sd); return __lt8668sx_power_on(lt8668sx); } static int lt8668sx_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct lt8668sx *lt8668sx = to_lt8668sx(sd); __lt8668sx_power_off(lt8668sx); return 0; } static const struct dev_pm_ops lt8668sx_pm_ops = { .suspend = lt8668sx_suspend, .resume = lt8668sx_resume, }; static int lt8668sx_check_chip_id(struct lt8668sx *lt8668sx) { struct device *dev = <8668sx->i2c_client->dev; struct v4l2_subdev *sd = <8668sx->sd; u8 id_h, id_l; u32 chipid; int ret = 0; lt8668sx_i2c_enable(sd); id_l = i2c_rd8(sd, CHIPID_REGL); id_h = i2c_rd8(sd, CHIPID_REGH); lt8668sx_i2c_disable(sd); chipid = (id_h << 8) | id_l; if (chipid != LT8668SX_CHIPID) { dev_err(dev, "chipid err, read:%#x, expect:%#x\n", chipid, LT8668SX_CHIPID); return -EINVAL; } dev_info(dev, "check chipid ok, id:%#x", chipid); return ret; } static int lt8668sx_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct v4l2_dv_timings default_timing = V4L2_DV_BT_CEA_640X480P59_94; struct lt8668sx *lt8668sx; struct v4l2_subdev *sd; struct device *dev = &client->dev; char facing[2]; int err; dev_info(dev, "driver version: %02x.%02x.%02x", DRIVER_VERSION >> 16, (DRIVER_VERSION & 0xff00) >> 8, DRIVER_VERSION & 0x00ff); lt8668sx = devm_kzalloc(dev, sizeof(struct lt8668sx), GFP_KERNEL); if (!lt8668sx) return -ENOMEM; sd = <8668sx->sd; lt8668sx->i2c_client = client; lt8668sx->mbus_fmt_code = MEDIA_BUS_FMT_UYVY8_2X8; err = lt8668sx_probe_of(lt8668sx); if (err) { v4l2_err(sd, "lt8668sx_parse_of failed! err:%d\n", err); return err; } lt8668sx->timings = default_timing; lt8668sx->cur_mode = <8668sx->support_modes[0]; __lt8668sx_power_on(lt8668sx); err = lt8668sx_check_chip_id(lt8668sx); if (err < 0) return err; INIT_DELAYED_WORK(<8668sx->delayed_work_hotplug, lt8668sx_delayed_work_hotplug); INIT_DELAYED_WORK(<8668sx->delayed_work_res_change, lt8668sx_delayed_work_res_change); if (lt8668sx->i2c_client->irq) { v4l2_dbg(1, debug, sd, "cfg lt8668sx irq!\n"); err = devm_request_threaded_irq(dev, lt8668sx->i2c_client->irq, NULL, lt8668sx_res_change_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lt8668sx", lt8668sx); if (err) { v4l2_err(sd, "request irq failed! err:%d\n", err); goto err_work_queues; } } else { v4l2_info(sd, "no irq, cfg poll!\n"); INIT_WORK(<8668sx->work_i2c_poll, lt8668sx_work_i2c_poll); timer_setup(<8668sx->timer, lt8668sx_irq_poll_timer, 0); lt8668sx->timer.expires = jiffies + msecs_to_jiffies(POLL_INTERVAL_MS); add_timer(<8668sx->timer); } lt8668sx->plugin_irq = gpiod_to_irq(lt8668sx->plugin_det_gpio); if (lt8668sx->plugin_irq < 0) dev_err(dev, "failed to get plugin det irq, maybe no use\n"); err = devm_request_threaded_irq(dev, lt8668sx->plugin_irq, NULL, plugin_detect_irq_handler, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "lt8668sx", lt8668sx); if (err) dev_err(dev, "failed to register plugin det irq (%d), maybe no use\n", err); mutex_init(<8668sx->confctl_mutex); err = lt8668sx_init_v4l2_ctrls(lt8668sx); if (err) goto err_free_hdl; client->flags |= I2C_CLIENT_SCCB; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API v4l2_i2c_subdev_init(sd, client, <8668sx_ops); sd->internal_ops = <8668sx_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; #endif #if defined(CONFIG_MEDIA_CONTROLLER) lt8668sx->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; err = media_entity_pads_init(&sd->entity, 1, <8668sx->pad); if (err < 0) { v4l2_err(sd, "media entity init failed! err:%d\n", err); goto err_free_hdl; } #endif memset(facing, 0, sizeof(facing)); if (strcmp(lt8668sx->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", lt8668sx->module_index, facing, LT8668SX_NAME, dev_name(sd->dev)); err = v4l2_async_register_subdev_sensor(sd); if (err < 0) { v4l2_err(sd, "v4l2 register subdev failed! err:%d\n", err); goto err_clean_entity; } err = v4l2_ctrl_handler_setup(sd->ctrl_handler); if (err) { v4l2_err(sd, "v4l2 ctrl handler setup failed! err:%d\n", err); goto err_clean_entity; } schedule_delayed_work(<8668sx->delayed_work_res_change, 100); v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, client->addr << 1, client->adapter->name); return 0; err_clean_entity: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_free_hdl: v4l2_ctrl_handler_free(<8668sx->hdl); mutex_destroy(<8668sx->confctl_mutex); err_work_queues: if (!lt8668sx->i2c_client->irq) flush_work(<8668sx->work_i2c_poll); cancel_delayed_work(<8668sx->delayed_work_hotplug); cancel_delayed_work(<8668sx->delayed_work_res_change); return err; } static void lt8668sx_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct lt8668sx *lt8668sx = to_lt8668sx(sd); if (!lt8668sx->i2c_client->irq) { del_timer_sync(<8668sx->timer); flush_work(<8668sx->work_i2c_poll); } cancel_delayed_work_sync(<8668sx->delayed_work_hotplug); cancel_delayed_work_sync(<8668sx->delayed_work_res_change); v4l2_async_unregister_subdev(sd); v4l2_device_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(<8668sx->hdl); mutex_destroy(<8668sx->confctl_mutex); clk_disable_unprepare(lt8668sx->xvclk); } #if IS_ENABLED(CONFIG_OF) static const struct of_device_id lt8668sx_of_match[] = { { .compatible = "lontium,lt8668sx" }, {}, }; MODULE_DEVICE_TABLE(of, lt8668sx_of_match); #endif static struct i2c_driver lt8668sx_driver = { .driver = { .name = LT8668SX_NAME, .pm = <8668sx_pm_ops, .of_match_table = of_match_ptr(lt8668sx_of_match), }, .probe = lt8668sx_probe, .remove = lt8668sx_remove, }; static int __init lt8668sx_driver_init(void) { return i2c_add_driver(<8668sx_driver); } static void __exit lt8668sx_driver_exit(void) { i2c_del_driver(<8668sx_driver); } device_initcall_sync(lt8668sx_driver_init); module_exit(lt8668sx_driver_exit); MODULE_DESCRIPTION("Lontium lt8668sx HDMI to CSI-2 bridge driver"); MODULE_AUTHOR("Jianwei Fan "); MODULE_LICENSE("GPL");