// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2021 Rockchip Electronics Co., Ltd. * * Author: Dingxian Wen * V0.0X01.0X00 first version. * V0.0X01.0X01 fix if plugin_gpio was not used. * V0.0X01.0X02 modify driver init level to late_initcall. * V0.0X01.0X03 add 4K60 dual mipi support * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "lt6911uxc.h" #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x3) #define LT6911UXC_NAME "LT6911UXC" #define LT6911UXC_LINK_FREQ_650M 650000000 #define LT6911UXC_LINK_FREQ_400M 400000000 #define LT6911UXC_LINK_FREQ_300M 300000000 #define LT6911UXC_LINK_FREQ_200M 200000000 #define LT6911UXC_LINK_FREQ_100M 100000000 #define LT6911UXC_LINK_FREQ_60M 60000000 #define LT6911UXC_PIXEL_RATE 600000000 #define I2C_MAX_XFER_SIZE 128 #ifdef LT6911UXC_OUT_RGB #define LT6911UXC_MEDIA_BUS_FMT MEDIA_BUS_FMT_BGR888_1X24 #else #define LT6911UXC_MEDIA_BUS_FMT MEDIA_BUS_FMT_UYVY8_2X8 #endif static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "debug level (0-2)"); static const s64 link_freq_menu_items[] = { LT6911UXC_LINK_FREQ_650M, LT6911UXC_LINK_FREQ_400M, LT6911UXC_LINK_FREQ_300M, LT6911UXC_LINK_FREQ_200M, LT6911UXC_LINK_FREQ_100M, LT6911UXC_LINK_FREQ_60M, }; struct lt6911uxc { struct clk *xvclk; struct delayed_work delayed_work_enable_hotplug; struct delayed_work delayed_work_res_change; struct gpio_desc *hpd_ctl_gpio; struct gpio_desc *plugin_det_gpio; struct gpio_desc *power_gpio; struct gpio_desc *reset_gpio; struct i2c_client *i2c_client; struct media_pad pad; struct mutex confctl_mutex; struct v4l2_ctrl *audio_present_ctrl; struct v4l2_ctrl *audio_sampling_rate_ctrl; struct v4l2_ctrl *detect_tx_5v_ctrl; struct v4l2_ctrl *link_freq; struct v4l2_ctrl *pixel_rate; struct v4l2_ctrl_handler hdl; struct v4l2_dv_timings timings; struct v4l2_mbus_config_mipi_csi2 bus; struct v4l2_subdev sd; struct rkmodule_multi_dev_info multi_dev_info; const char *len_name; const char *module_facing; const char *module_name; const struct lt6911uxc_mode *cur_mode; bool enable_hdcp; bool nosignal; bool is_audio_present; int plugin_irq; u32 mbus_fmt_code; u32 module_index; u32 csi_lanes_in_use; u32 audio_sampling_rate; struct device *classdev; }; struct lt6911uxc_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, 3, 0}, .lp_escclk_pol_sel = {1, 1, 0, 0}, .skew_data_cal_clk = {0, 0, 0, 0}, .clk_hs_term_sel = 2, .data_hs_term_sel = {2, 2, 2, 2}, .reserved = {0}, }; static const struct v4l2_dv_timings_cap lt6911uxc_timings_cap = { .type = V4L2_DV_BT_656_1120, /* keep this initialization for compatibility with GCC < 4.4.6 */ .reserved = { 0 }, V4L2_INIT_BT_TIMINGS(1, 10000, 1, 10000, 0, 600000000, 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) }; static const struct lt6911uxc_mode supported_modes[] = { { .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 = 0, }, { .width = 1920, .height = 1080, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 2200, .vts_def = 1125, .mipi_freq_idx = 2, }, { .width = 1920, .height = 540, .max_fps = { .numerator = 10000, .denominator = 600000, }, .mipi_freq_idx = 3, }, { .width = 1440, .height = 240, .max_fps = { .numerator = 10000, .denominator = 600000, }, .mipi_freq_idx = 4, }, { .width = 1440, .height = 288, .max_fps = { .numerator = 10000, .denominator = 500000, }, .mipi_freq_idx = 4, }, { .width = 1280, .height = 720, .max_fps = { .numerator = 10000, .denominator = 600000, }, .hts_def = 1650, .vts_def = 750, .mipi_freq_idx = 3, }, { .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 void lt6911uxc_format_change(struct v4l2_subdev *sd); static int lt6911uxc_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd); static int lt6911uxc_s_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings); static inline struct lt6911uxc *to_state(struct v4l2_subdev *sd) { return container_of(sd, struct lt6911uxc, sd); } static int i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) { struct lt6911uxc *lt6911uxc = to_state(sd); struct i2c_client *client = lt6911uxc->i2c_client; struct i2c_msg msgs[3]; int err; u8 bank = reg >> 8; u8 reg_addr = reg & 0xFF; u8 buf[2] = {0xFF, bank}; /* write bank */ msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = 2; msgs[0].buf = buf; /* write reg addr */ msgs[1].addr = client->addr; msgs[1].flags = 0; msgs[1].len = 1; msgs[1].buf = ®_addr; /* read data */ 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); return -EIO; } return 0; } static int i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) { struct lt6911uxc *lt6911uxc = to_state(sd); struct i2c_client *client = lt6911uxc->i2c_client; struct i2c_msg msgs[2]; int err, i; u8 data[I2C_MAX_XFER_SIZE]; u8 bank = reg >> 8; u8 reg_addr = reg & 0xFF; u8 buf[2] = {0xFF, bank}; 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); } data[0] = reg_addr; for (i = 0; i < n; i++) data[i + 1] = values[i]; /* write bank */ msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = 2; msgs[0].buf = buf; /* write reg data */ msgs[1].addr = client->addr; msgs[1].flags = 0; msgs[1].len = 1 + n; msgs[1].buf = data; 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 -EIO; } return 0; } static int i2c_rd8(struct v4l2_subdev *sd, u16 reg, u8 *val_p) { return i2c_rd(sd, reg, val_p, 1); } static int i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val) { return i2c_wr(sd, reg, &val, 1); } static void lt6911uxc_i2c_enable(struct v4l2_subdev *sd) { i2c_wr8(sd, I2C_EN_REG, I2C_ENABLE); } static void lt6911uxc_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 lt6911uxc *lt6911uxc = to_state(sd); /* if not use plugin det gpio */ if (!lt6911uxc->plugin_det_gpio) return true; cnt = 0; for (i = 0; i < 5; i++) { val = gpiod_get_value(lt6911uxc->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 lt6911uxc *lt6911uxc = to_state(sd); v4l2_dbg(1, debug, sd, "%s no signal:%d\n", __func__, lt6911uxc->nosignal); return lt6911uxc->nosignal; } static inline bool audio_present(struct v4l2_subdev *sd) { struct lt6911uxc *lt6911uxc = to_state(sd); return lt6911uxc->is_audio_present; } static int get_audio_sampling_rate(struct v4l2_subdev *sd) { struct lt6911uxc *lt6911uxc = to_state(sd); if (no_signal(sd)) return 0; return lt6911uxc->audio_sampling_rate; } 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 lt6911uxc_rcv_supported_res(struct v4l2_subdev *sd, u32 width, u32 height) { u32 i; for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { if ((supported_modes[i].width == width) && (supported_modes[i].height == height)) { break; } } if (i == ARRAY_SIZE(supported_modes)) { v4l2_err(sd, "%s do not support res wxh: %dx%d\n", __func__, width, height); return false; } else { return true; } } static int lt6911uxc_get_detected_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt6911uxc *lt6911uxc = to_state(sd); struct v4l2_bt_timings *bt = &timings->bt; u32 hact, vact, htotal, vtotal; u32 hbp, hs, hfp, vbp, vs, vfp; u32 pixel_clock, fps; u8 clk_h, clk_m, clk_l; u8 value, val_h, val_l; u32 fw_ver, mipi_byte_clk, mipi_bitrate; u8 fw_a, fw_b, fw_c, fw_d, lanes; u8 video_fmt; int ret; memset(timings, 0, sizeof(struct v4l2_dv_timings)); lt6911uxc_i2c_enable(sd); ret = i2c_rd8(sd, FW_VER_A, &fw_a); ret |= i2c_rd8(sd, FW_VER_B, &fw_b); ret |= i2c_rd8(sd, FW_VER_C, &fw_c); ret |= i2c_rd8(sd, FW_VER_D, &fw_d); if (ret) { v4l2_err(sd, "%s: I2C transform err!\n", __func__); return -ENOLINK; } fw_ver = (fw_a << 24) | (fw_b << 16) | (fw_c << 8) | fw_d; v4l2_info(sd, "read fw_version:%#x", fw_ver); i2c_wr8(sd, INT_COMPARE_REG, RECEIVED_INT); i2c_rd8(sd, INT_STATUS_86A3, &val_h); i2c_rd8(sd, INT_STATUS_86A5, &val_l); v4l2_info(sd, "int status REG_86A3:%#x, REG_86A5:%#x\n", val_h, val_l); i2c_rd8(sd, HDMI_VERSION, &value); i2c_rd8(sd, TMDS_CLK_H, &clk_h); i2c_rd8(sd, TMDS_CLK_M, &clk_m); i2c_rd8(sd, TMDS_CLK_L, &clk_l); pixel_clock = (((clk_h & 0xf) << 16) | (clk_m << 8) | clk_l) * 1000; if (value & BIT(0)) /* HDMI 2.0 */ pixel_clock *= 4; i2c_rd8(sd, MIPI_LANES, &lanes); lt6911uxc->csi_lanes_in_use = lanes; if (lt6911uxc->csi_lanes_in_use == 8) v4l2_info(sd, "get 8 lane in use, set dual mipi mode\n"); i2c_wr8(sd, FM1_DET_CLK_SRC_SEL, AD_LMTX_WRITE_CLK); i2c_rd8(sd, FREQ_METER_H, &clk_h); i2c_rd8(sd, FREQ_METER_M, &clk_m); i2c_rd8(sd, FREQ_METER_L, &clk_l); mipi_byte_clk = (((clk_h & 0xf) << 16) | (clk_m << 8) | clk_l); mipi_bitrate = mipi_byte_clk * 8 / 1000; v4l2_info(sd, "MIPI Byte clk: %uKHz, MIPI bitrate: %uMbps, lanes:%d\n", mipi_byte_clk, mipi_bitrate, lanes); i2c_rd8(sd, HTOTAL_H, &val_h); i2c_rd8(sd, HTOTAL_L, &val_l); htotal = ((val_h << 8) | val_l) * 2; i2c_rd8(sd, VTOTAL_H, &val_h); i2c_rd8(sd, VTOTAL_L, &val_l); vtotal = (val_h << 8) | val_l; i2c_rd8(sd, HACT_H, &val_h); i2c_rd8(sd, HACT_L, &val_l); hact = ((val_h << 8) | val_l) * 2; i2c_rd8(sd, VACT_H, &val_h); i2c_rd8(sd, VACT_L, &val_l); vact = (val_h << 8) | val_l; i2c_rd8(sd, HS_H, &val_h); i2c_rd8(sd, HS_L, &val_l); hs = ((val_h << 8) | val_l) * 2; i2c_rd8(sd, VS, &value); vs = value; i2c_rd8(sd, HFP_H, &val_h); i2c_rd8(sd, HFP_L, &val_l); hfp = ((val_h << 8) | val_l) * 2; i2c_rd8(sd, VFP, &value); vfp = value; i2c_rd8(sd, HBP_H, &val_h); i2c_rd8(sd, HBP_L, &val_l); hbp = ((val_h << 8) | val_l) * 2; i2c_rd8(sd, VBP, &value); vbp = value; i2c_rd8(sd, COLOR_FMT_STATUS, &video_fmt); video_fmt = (video_fmt & GENMASK(6, 5)) >> 5; lt6911uxc_i2c_disable(sd); if (video_fmt == 0x3) { lt6911uxc->nosignal = true; v4l2_err(sd, "%s ERROR: HDMI input YUV420, don't support YUV420!\n", __func__); return -EINVAL; } if (!lt6911uxc_rcv_supported_res(sd, hact, vact)) { lt6911uxc->nosignal = true; v4l2_err(sd, "%s: rcv err res, return no signal!\n", __func__); return -EINVAL; } lt6911uxc->nosignal = false; i2c_rd8(sd, AUDIO_IN_STATUS, &value); lt6911uxc->is_audio_present = (value & BIT(5)) ? true : false; i2c_rd8(sd, AUDIO_SAMPLE_RATAE_H, &val_h); i2c_rd8(sd, AUDIO_SAMPLE_RATAE_L, &val_l); lt6911uxc->audio_sampling_rate = ((val_h << 8) | val_l) + 2; v4l2_info(sd, "is_audio_present: %d, audio_sampling_rate: %dKhz\n", lt6911uxc->is_audio_present, lt6911uxc->audio_sampling_rate); timings->type = V4L2_DV_BT_656_1120; bt->width = hact; bt->height = vact; bt->vsync = vs; bt->hsync = hs; bt->pixelclock = pixel_clock; bt->hfrontporch = hfp; bt->vfrontporch = vfp; bt->hbackporch = hbp; bt->vbackporch = vbp; fps = fps_calc(bt); /* for interlaced res 1080i 576i 480i*/ if ((hact == 1920 && vact == 540) || (hact == 1440 && vact == 288) || (hact == 1440 && vact == 240)) { bt->interlaced = V4L2_DV_INTERLACED; bt->height *= 2; bt->il_vsync = bt->vsync + 1; } else { bt->interlaced = V4L2_DV_PROGRESSIVE; } v4l2_info(sd, "act:%dx%d, total:%dx%d, pixclk:%d, fps:%d\n", hact, vact, htotal, vtotal, pixel_clock, fps); v4l2_info(sd, "hfp:%d, hs:%d, hbp:%d, vfp:%d, vs:%d, vbp:%d, inerlaced:%d\n", bt->hfrontporch, bt->hsync, bt->hbackporch, bt->vfrontporch, bt->vsync, bt->vbackporch, bt->interlaced); return 0; } static void lt6911uxc_config_hpd(struct v4l2_subdev *sd) { struct lt6911uxc *lt6911uxc = to_state(sd); bool plugin; plugin = tx_5v_power_present(sd); v4l2_dbg(2, debug, sd, "%s: plugin: %d\n", __func__, plugin); if (plugin) { gpiod_set_value(lt6911uxc->hpd_ctl_gpio, 1); } else { lt6911uxc->nosignal = true; gpiod_set_value(lt6911uxc->hpd_ctl_gpio, 0); } } static void lt6911uxc_delayed_work_enable_hotplug(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct lt6911uxc *lt6911uxc = container_of(dwork, struct lt6911uxc, delayed_work_enable_hotplug); struct v4l2_subdev *sd = <6911uxc->sd; v4l2_dbg(2, debug, sd, "%s:\n", __func__); v4l2_ctrl_s_ctrl(lt6911uxc->detect_tx_5v_ctrl, tx_5v_power_present(sd)); lt6911uxc_config_hpd(sd); } static void lt6911uxc_delayed_work_res_change(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct lt6911uxc *lt6911uxc = container_of(dwork, struct lt6911uxc, delayed_work_res_change); struct v4l2_subdev *sd = <6911uxc->sd; v4l2_dbg(2, debug, sd, "%s:\n", __func__); lt6911uxc_format_change(sd); } static int lt6911uxc_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd) { struct lt6911uxc *lt6911uxc = to_state(sd); return v4l2_ctrl_s_ctrl(lt6911uxc->detect_tx_5v_ctrl, tx_5v_power_present(sd)); } static int lt6911uxc_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd) { struct lt6911uxc *lt6911uxc = to_state(sd); return v4l2_ctrl_s_ctrl(lt6911uxc->audio_sampling_rate_ctrl, get_audio_sampling_rate(sd)); } static int lt6911uxc_s_ctrl_audio_present(struct v4l2_subdev *sd) { struct lt6911uxc *lt6911uxc = to_state(sd); return v4l2_ctrl_s_ctrl(lt6911uxc->audio_present_ctrl, audio_present(sd)); } static int lt6911uxc_update_controls(struct v4l2_subdev *sd) { int ret = 0; ret |= lt6911uxc_s_ctrl_detect_tx_5v(sd); ret |= lt6911uxc_s_ctrl_audio_sampling_rate(sd); ret |= lt6911uxc_s_ctrl_audio_present(sd); return ret; } static inline void enable_stream(struct v4l2_subdev *sd, bool enable) { v4l2_dbg(2, debug, sd, "%s: %sable\n", __func__, enable ? "en" : "dis"); } static void lt6911uxc_format_change(struct v4l2_subdev *sd) { struct lt6911uxc *lt6911uxc = to_state(sd); struct v4l2_dv_timings timings; const struct v4l2_event lt6911uxc_ev_fmt = { .type = V4L2_EVENT_SOURCE_CHANGE, .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, }; if (lt6911uxc_get_detected_timings(sd, &timings)) { enable_stream(sd, false); v4l2_dbg(1, debug, sd, "%s: No signal\n", __func__); } else { if (!v4l2_match_dv_timings(<6911uxc->timings, &timings, 0, false)) { enable_stream(sd, false); /* automatically set timing rather than set by user */ lt6911uxc_s_dv_timings(sd, &timings); v4l2_print_dv_timings(sd->name, "Format_change: New format: ", &timings, false); } } if (sd->devnode) v4l2_subdev_notify_event(sd, <6911uxc_ev_fmt); } static int lt6911uxc_isr(struct v4l2_subdev *sd, u32 status, bool *handled) { struct lt6911uxc *lt6911uxc = to_state(sd); schedule_delayed_work(<6911uxc->delayed_work_res_change, HZ / 20); *handled = true; return 0; } static irqreturn_t lt6911uxc_res_change_irq_handler(int irq, void *dev_id) { struct lt6911uxc *lt6911uxc = dev_id; bool handled; lt6911uxc_isr(<6911uxc->sd, 0, &handled); return handled ? IRQ_HANDLED : IRQ_NONE; } static irqreturn_t plugin_detect_irq_handler(int irq, void *dev_id) { struct lt6911uxc *lt6911uxc = dev_id; struct v4l2_subdev *sd = <6911uxc->sd; /* control hpd output level after 25ms */ schedule_delayed_work(<6911uxc->delayed_work_enable_hotplug, HZ / 40); tx_5v_power_present(sd); return IRQ_HANDLED; } static int lt6911uxc_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 lt6911uxc_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 lt6911uxc_s_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt6911uxc *lt6911uxc = to_state(sd); if (!timings) return -EINVAL; if (debug) v4l2_print_dv_timings(sd->name, "s_dv_timings: ", timings, false); if (v4l2_match_dv_timings(<6911uxc->timings, timings, 0, false)) { v4l2_dbg(1, debug, sd, "%s: no change\n", __func__); return 0; } lt6911uxc->timings = *timings; enable_stream(sd, false); return 0; } static int lt6911uxc_g_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt6911uxc *lt6911uxc = to_state(sd); *timings = lt6911uxc->timings; return 0; } static int lt6911uxc_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, <6911uxc_timings_cap, NULL, NULL); } static int lt6911uxc_query_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct lt6911uxc *lt6911uxc = to_state(sd); *timings = lt6911uxc->timings; if (debug) v4l2_print_dv_timings(sd->name, "query_dv_timings: ", timings, false); if (!v4l2_valid_dv_timings(timings, <6911uxc_timings_cap, NULL, NULL)) { v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__); return -ERANGE; } return 0; } static int lt6911uxc_dv_timings_cap(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap) { if (cap->pad != 0) return -EINVAL; *cap = lt6911uxc_timings_cap; return 0; } static int lt6911uxc_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *cfg) { struct lt6911uxc *lt6911uxc = to_state(sd); cfg->type = V4L2_MBUS_CSI2_DPHY; cfg->bus.mipi_csi2 = lt6911uxc->bus; return 0; } static int lt6911uxc_s_stream(struct v4l2_subdev *sd, int enable) { enable_stream(sd, enable); return 0; } static int lt6911uxc_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { switch (code->index) { case 0: code->code = LT6911UXC_MEDIA_BUS_FMT; break; default: return -EINVAL; } return 0; } static int lt6911uxc_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 != LT6911UXC_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 lt6911uxc_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 = LT6911UXC_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; return 0; } static int lt6911uxc_get_reso_dist(const struct lt6911uxc_mode *mode, struct v4l2_dv_timings *timings) { struct v4l2_bt_timings *bt = &timings->bt; u32 cur_fps, dist_fps; cur_fps = fps_calc(bt); 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 lt6911uxc_mode * lt6911uxc_find_best_fit(struct lt6911uxc *lt6911uxc) { 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 = lt6911uxc_get_reso_dist(&supported_modes[i], <6911uxc->timings); if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) { cur_best_fit_dist = dist; cur_best_fit = i; } } dev_info(<6911uxc->i2c_client->dev, "find current mode: support_mode[%d], %dx%d@%dfps\n", cur_best_fit, supported_modes[cur_best_fit].width, supported_modes[cur_best_fit].height, DIV_ROUND_CLOSEST(supported_modes[cur_best_fit].max_fps.denominator, supported_modes[cur_best_fit].max_fps.numerator)); return &supported_modes[cur_best_fit]; } static int lt6911uxc_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { struct lt6911uxc *lt6911uxc = to_state(sd); const struct lt6911uxc_mode *mode; mutex_lock(<6911uxc->confctl_mutex); format->format.code = lt6911uxc->mbus_fmt_code; format->format.width = lt6911uxc->timings.bt.width; format->format.height = lt6911uxc->timings.bt.height; format->format.field = lt6911uxc->timings.bt.interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE; format->format.colorspace = V4L2_COLORSPACE_SRGB; mode = lt6911uxc_find_best_fit(lt6911uxc); lt6911uxc->cur_mode = mode; __v4l2_ctrl_s_ctrl_int64(lt6911uxc->pixel_rate, LT6911UXC_PIXEL_RATE); __v4l2_ctrl_s_ctrl(lt6911uxc->link_freq, mode->mipi_freq_idx); mutex_unlock(<6911uxc->confctl_mutex); v4l2_dbg(1, debug, sd, "%s: fmt code:%d, w:%d, h:%d, field mode:%s\n", __func__, format->format.code, format->format.width, format->format.height, (format->format.field == V4L2_FIELD_INTERLACED) ? "I" : "P"); return 0; } static int lt6911uxc_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { struct lt6911uxc *lt6911uxc = to_state(sd); const struct lt6911uxc_mode *mode; /* is overwritten by get_fmt */ u32 code = format->format.code; int ret = lt6911uxc_get_fmt(sd, sd_state, format); format->format.code = code; if (ret) return ret; switch (code) { case LT6911UXC_MEDIA_BUS_FMT: break; default: return -EINVAL; } if (format->which == V4L2_SUBDEV_FORMAT_TRY) return 0; lt6911uxc->mbus_fmt_code = format->format.code; mode = lt6911uxc_find_best_fit(lt6911uxc); lt6911uxc->cur_mode = mode; enable_stream(sd, false); return 0; } static int lt6911uxc_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct lt6911uxc *lt6911uxc = to_state(sd); const struct lt6911uxc_mode *mode = lt6911uxc->cur_mode; mutex_lock(<6911uxc->confctl_mutex); fi->interval = mode->max_fps; mutex_unlock(<6911uxc->confctl_mutex); return 0; } static void lt6911uxc_get_module_inf(struct lt6911uxc *lt6911uxc, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strscpy(inf->base.sensor, LT6911UXC_NAME, sizeof(inf->base.sensor)); strscpy(inf->base.module, lt6911uxc->module_name, sizeof(inf->base.module)); strscpy(inf->base.lens, lt6911uxc->len_name, sizeof(inf->base.lens)); } static long lt6911uxc_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct lt6911uxc *lt6911uxc = to_state(sd); struct device *dev = <6911uxc->i2c_client->dev; long ret = 0; struct rkmodule_csi_dphy_param *dphy_param; struct rkmodule_capture_info *capture_info; switch (cmd) { case RKMODULE_GET_MODULE_INFO: lt6911uxc_get_module_inf(lt6911uxc, (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(<6911uxc->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(<6911uxc->i2c_client->dev, "sensor get dphy param\n"); break; case RKMODULE_GET_CAPTURE_MODE: capture_info = (struct rkmodule_capture_info *)arg; if (lt6911uxc->csi_lanes_in_use == 8) { dev_info(dev, "8 lanes in use, set dual mipi mode\n"); capture_info->mode = RKMODULE_MULTI_DEV_COMBINE_ONE; capture_info->multi_dev = lt6911uxc->multi_dev_info; } else { capture_info->mode = 0; } break; default: ret = -ENOIOCTLCMD; break; } return ret; } #ifdef CONFIG_COMPAT static long lt6911uxc_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; struct rkmodule_capture_info *capture_info; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = lt6911uxc_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 = lt6911uxc_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 = lt6911uxc_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 = lt6911uxc_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; case RKMODULE_GET_CAPTURE_MODE: capture_info = kzalloc(sizeof(*capture_info), GFP_KERNEL); if (!capture_info) { ret = -ENOMEM; return ret; } ret = lt6911uxc_ioctl(sd, cmd, capture_info); if (!ret) { ret = copy_to_user(up, capture_info, sizeof(*capture_info)); if (ret) ret = -EFAULT; } kfree(capture_info); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif static const struct v4l2_subdev_core_ops lt6911uxc_core_ops = { .interrupt_service_routine = lt6911uxc_isr, .subscribe_event = lt6911uxc_subscribe_event, .unsubscribe_event = v4l2_event_subdev_unsubscribe, .ioctl = lt6911uxc_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = lt6911uxc_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops lt6911uxc_video_ops = { .g_input_status = lt6911uxc_g_input_status, .s_dv_timings = lt6911uxc_s_dv_timings, .g_dv_timings = lt6911uxc_g_dv_timings, .query_dv_timings = lt6911uxc_query_dv_timings, .s_stream = lt6911uxc_s_stream, .g_frame_interval = lt6911uxc_g_frame_interval, }; static const struct v4l2_subdev_pad_ops lt6911uxc_pad_ops = { .enum_mbus_code = lt6911uxc_enum_mbus_code, .enum_frame_size = lt6911uxc_enum_frame_sizes, .enum_frame_interval = lt6911uxc_enum_frame_interval, .set_fmt = lt6911uxc_set_fmt, .get_fmt = lt6911uxc_get_fmt, .enum_dv_timings = lt6911uxc_enum_dv_timings, .dv_timings_cap = lt6911uxc_dv_timings_cap, .get_mbus_config = lt6911uxc_g_mbus_config, }; static const struct v4l2_subdev_ops lt6911uxc_ops = { .core = <6911uxc_core_ops, .video = <6911uxc_video_ops, .pad = <6911uxc_pad_ops, }; static const struct v4l2_ctrl_config lt6911uxc_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 lt6911uxc_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 void lt6911uxc_reset(struct lt6911uxc *lt6911uxc) { gpiod_set_value(lt6911uxc->reset_gpio, 0); usleep_range(2000, 2100); gpiod_set_value(lt6911uxc->reset_gpio, 1); usleep_range(120*1000, 121*1000); gpiod_set_value(lt6911uxc->reset_gpio, 0); usleep_range(300*1000, 310*1000); } static int lt6911uxc_init_v4l2_ctrls(struct lt6911uxc *lt6911uxc) { const struct lt6911uxc_mode *mode; struct v4l2_subdev *sd; int ret; mode = lt6911uxc->cur_mode; sd = <6911uxc->sd; ret = v4l2_ctrl_handler_init(<6911uxc->hdl, 5); if (ret) return ret; lt6911uxc->link_freq = v4l2_ctrl_new_int_menu(<6911uxc->hdl, NULL, V4L2_CID_LINK_FREQ, ARRAY_SIZE(link_freq_menu_items) - 1, 0, link_freq_menu_items); lt6911uxc->pixel_rate = v4l2_ctrl_new_std(<6911uxc->hdl, NULL, V4L2_CID_PIXEL_RATE, 0, LT6911UXC_PIXEL_RATE, 1, LT6911UXC_PIXEL_RATE); lt6911uxc->detect_tx_5v_ctrl = v4l2_ctrl_new_std(<6911uxc->hdl, NULL, V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0); lt6911uxc->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(<6911uxc->hdl, <6911uxc_ctrl_audio_sampling_rate, NULL); lt6911uxc->audio_present_ctrl = v4l2_ctrl_new_custom(<6911uxc->hdl, <6911uxc_ctrl_audio_present, NULL); sd->ctrl_handler = <6911uxc->hdl; if (lt6911uxc->hdl.error) { ret = lt6911uxc->hdl.error; v4l2_err(sd, "cfg v4l2 ctrls failed! ret:%d\n", ret); return ret; } __v4l2_ctrl_s_ctrl(lt6911uxc->link_freq, mode->mipi_freq_idx); __v4l2_ctrl_s_ctrl_int64(lt6911uxc->pixel_rate, LT6911UXC_PIXEL_RATE); if (lt6911uxc_update_controls(sd)) { ret = -ENODEV; v4l2_err(sd, "update v4l2 ctrls failed! ret:%d\n", ret); return ret; } return 0; } static int lt6911uxc_check_chip_id(struct lt6911uxc *lt6911uxc) { struct device *dev = <6911uxc->i2c_client->dev; struct v4l2_subdev *sd = <6911uxc->sd; u8 fw_a, fw_b, fw_c, fw_d; u8 id_h, id_l; u32 chipid, fw_ver; int ret; lt6911uxc_i2c_enable(sd); ret = i2c_rd8(sd, CHIPID_L, &id_l); ret |= i2c_rd8(sd, CHIPID_H, &id_h); ret |= i2c_rd8(sd, FW_VER_A, &fw_a); ret |= i2c_rd8(sd, FW_VER_B, &fw_b); ret |= i2c_rd8(sd, FW_VER_C, &fw_c); ret |= i2c_rd8(sd, FW_VER_D, &fw_d); lt6911uxc_i2c_disable(sd); if (!ret) { chipid = (id_h << 8) | id_l; if (chipid != LT6911UXC_CHIPID) { dev_err(dev, "chipid err, read:%#x, expect:%#x\n", chipid, LT6911UXC_CHIPID); return -EINVAL; } fw_ver = (fw_a << 24) | (fw_b << 16) | (fw_c << 8) | fw_d; dev_info(dev, "chipid ok, id:%#x, fw_ver:%#x", chipid, fw_ver); ret = 0; } else { dev_err(dev, "%s i2c trans failed!\n", __func__); } return ret; } #ifdef CONFIG_OF static int lt6911uxc_parse_of(struct lt6911uxc *lt6911uxc) { struct device *dev = <6911uxc->i2c_client->dev; struct device_node *node = dev->of_node; struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 }; struct device_node *ep; int ret; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, <6911uxc->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, <6911uxc->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, <6911uxc->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, <6911uxc->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } lt6911uxc->power_gpio = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW); if (IS_ERR(lt6911uxc->power_gpio)) { dev_err(dev, "failed to get power gpio\n"); ret = PTR_ERR(lt6911uxc->power_gpio); return ret; } lt6911uxc->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(lt6911uxc->reset_gpio)) { dev_err(dev, "failed to get reset gpio\n"); ret = PTR_ERR(lt6911uxc->reset_gpio); return ret; } lt6911uxc->plugin_det_gpio = devm_gpiod_get_optional(dev, "plugin-det", GPIOD_IN); if (IS_ERR(lt6911uxc->plugin_det_gpio)) { dev_err(dev, "failed to get plugin det gpio\n"); ret = PTR_ERR(lt6911uxc->plugin_det_gpio); return ret; } lt6911uxc->hpd_ctl_gpio = devm_gpiod_get_optional(dev, "hpd-ctl", GPIOD_OUT_HIGH); if (IS_ERR(lt6911uxc->hpd_ctl_gpio)) { dev_err(dev, "failed to get hpd ctl gpio\n"); ret = PTR_ERR(lt6911uxc->hpd_ctl_gpio); return ret; } ep = of_graph_get_next_endpoint(dev->of_node, NULL); if (!ep) { dev_err(dev, "missing endpoint node\n"); ret = -EINVAL; return ret; } ret = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(ep), &endpoint); if (ret) { dev_err(dev, "failed to parse endpoint\n"); goto put_node; } if (endpoint.bus_type != V4L2_MBUS_CSI2_DPHY || endpoint.bus.mipi_csi2.num_data_lanes == 0) { dev_err(dev, "missing CSI-2 properties in endpoint\n"); ret = -EINVAL; goto free_endpoint; } lt6911uxc->xvclk = devm_clk_get(dev, "xvclk"); if (IS_ERR(lt6911uxc->xvclk)) { dev_err(dev, "failed to get xvclk\n"); ret = -EINVAL; goto free_endpoint; } ret = clk_prepare_enable(lt6911uxc->xvclk); if (ret) { dev_err(dev, "Failed! to enable xvclk\n"); goto free_endpoint; } lt6911uxc->csi_lanes_in_use = endpoint.bus.mipi_csi2.num_data_lanes; lt6911uxc->bus = endpoint.bus.mipi_csi2; lt6911uxc->enable_hdcp = false; gpiod_set_value(lt6911uxc->hpd_ctl_gpio, 0); gpiod_set_value(lt6911uxc->power_gpio, 1); lt6911uxc_reset(lt6911uxc); ret = 0; free_endpoint: v4l2_fwnode_endpoint_free(&endpoint); put_node: of_node_put(ep); return ret; } #else static inline int lt6911uxc_parse_of(struct lt6911uxc *lt6911uxc) { return -ENODEV; } #endif static ssize_t audio_rate_show(struct device *dev, struct device_attribute *attr, char *buf) { struct lt6911uxc *lt6911uxc = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "%d", lt6911uxc->audio_sampling_rate); } static ssize_t audio_present_show(struct device *dev, struct device_attribute *attr, char *buf) { struct lt6911uxc *lt6911uxc = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "%d", tx_5v_power_present(<6911uxc->sd) ? lt6911uxc->is_audio_present : 0); } static DEVICE_ATTR_RO(audio_rate); static DEVICE_ATTR_RO(audio_present); static struct attribute *lt6911_attrs[] = { &dev_attr_audio_rate.attr, &dev_attr_audio_present.attr, NULL }; ATTRIBUTE_GROUPS(lt6911); static int lt6911uxc_get_multi_dev_info(struct lt6911uxc *lt6911uxc) { struct device *dev = <6911uxc->i2c_client->dev; struct device_node *node = dev->of_node; struct device_node *multi_info_np; multi_info_np = of_get_child_by_name(node, "multi-dev-info"); if (!multi_info_np) { dev_info(dev, "failed to get multi dev info\n"); return -EINVAL; } of_property_read_u32(multi_info_np, "dev-idx-l", <6911uxc->multi_dev_info.dev_idx[0]); of_property_read_u32(multi_info_np, "dev-idx-r", <6911uxc->multi_dev_info.dev_idx[1]); of_property_read_u32(multi_info_np, "combine-idx", <6911uxc->multi_dev_info.combine_idx[0]); of_property_read_u32(multi_info_np, "pixel-offset", <6911uxc->multi_dev_info.pixel_offset); of_property_read_u32(multi_info_np, "dev-num", <6911uxc->multi_dev_info.dev_num); dev_info(dev, "multi dev left: mipi%d, multi dev right: mipi%d, combile mipi%d, dev num: %d\n", lt6911uxc->multi_dev_info.dev_idx[0], lt6911uxc->multi_dev_info.dev_idx[1], lt6911uxc->multi_dev_info.combine_idx[0], lt6911uxc->multi_dev_info.dev_num); return 0; } static int lt6911uxc_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct v4l2_dv_timings default_timing = V4L2_DV_BT_CEA_640X480P59_94; struct lt6911uxc *lt6911uxc; 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); lt6911uxc = devm_kzalloc(dev, sizeof(struct lt6911uxc), GFP_KERNEL); if (!lt6911uxc) return -ENOMEM; sd = <6911uxc->sd; lt6911uxc->i2c_client = client; lt6911uxc->timings = default_timing; lt6911uxc->cur_mode = &supported_modes[0]; lt6911uxc->mbus_fmt_code = LT6911UXC_MEDIA_BUS_FMT; err = lt6911uxc_parse_of(lt6911uxc); if (err) { v4l2_err(sd, "lt6911uxc_parse_of failed! err:%d\n", err); return err; } err = lt6911uxc_get_multi_dev_info(lt6911uxc); if (err) v4l2_info(sd, "get multi dev info failed, not use dual mipi mode\n"); err = lt6911uxc_check_chip_id(lt6911uxc); if (err < 0) return err; /* after the CPU actively accesses the lt6911uxc through I2C, * a reset operation is required. */ lt6911uxc_reset(lt6911uxc); mutex_init(<6911uxc->confctl_mutex); err = lt6911uxc_init_v4l2_ctrls(lt6911uxc); if (err) goto err_free_hdl; client->flags |= I2C_CLIENT_SCCB; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API v4l2_i2c_subdev_init(sd, client, <6911uxc_ops); sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; #endif #if defined(CONFIG_MEDIA_CONTROLLER) lt6911uxc->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; err = media_entity_pads_init(&sd->entity, 1, <6911uxc->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(lt6911uxc->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", lt6911uxc->module_index, facing, LT6911UXC_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; } lt6911uxc->classdev = device_create_with_groups(rk_hdmirx_class(), dev, MKDEV(0, 0), lt6911uxc, lt6911_groups, "lt6911"); if (IS_ERR(lt6911uxc->classdev)) goto err_clean_entity; INIT_DELAYED_WORK(<6911uxc->delayed_work_enable_hotplug, lt6911uxc_delayed_work_enable_hotplug); INIT_DELAYED_WORK(<6911uxc->delayed_work_res_change, lt6911uxc_delayed_work_res_change); if (lt6911uxc->i2c_client->irq) { v4l2_dbg(1, debug, sd, "cfg lt6911uxc irq!\n"); err = devm_request_threaded_irq(dev, lt6911uxc->i2c_client->irq, NULL, lt6911uxc_res_change_irq_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lt6911uxc", lt6911uxc); if (err) { v4l2_err(sd, "request irq failed! err:%d\n", err); goto err_work_queues; } } else { err = -EINVAL; v4l2_err(sd, "no irq cfg failed!\n"); goto err_work_queues; } lt6911uxc->plugin_irq = gpiod_to_irq(lt6911uxc->plugin_det_gpio); if (lt6911uxc->plugin_irq < 0) dev_err(dev, "failed to get plugin det irq, maybe no use\n"); err = devm_request_threaded_irq(dev, lt6911uxc->plugin_irq, NULL, plugin_detect_irq_handler, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "lt6911uxc", lt6911uxc); if (err) dev_err(dev, "failed to register plugin det irq (%d), maybe no use\n", err); err = v4l2_ctrl_handler_setup(sd->ctrl_handler); if (err) { v4l2_err(sd, "v4l2 ctrl handler setup failed! err:%d\n", err); goto err_work_queues; } lt6911uxc_config_hpd(sd); v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, client->addr << 1, client->adapter->name); return 0; err_work_queues: cancel_delayed_work(<6911uxc->delayed_work_enable_hotplug); cancel_delayed_work(<6911uxc->delayed_work_res_change); err_clean_entity: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_free_hdl: v4l2_ctrl_handler_free(<6911uxc->hdl); mutex_destroy(<6911uxc->confctl_mutex); return err; } static void lt6911uxc_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct lt6911uxc *lt6911uxc = to_state(sd); cancel_delayed_work_sync(<6911uxc->delayed_work_enable_hotplug); cancel_delayed_work_sync(<6911uxc->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(<6911uxc->hdl); mutex_destroy(<6911uxc->confctl_mutex); clk_disable_unprepare(lt6911uxc->xvclk); } #if IS_ENABLED(CONFIG_OF) static const struct of_device_id lt6911uxc_of_match[] = { { .compatible = "lontium,lt6911uxc" }, {}, }; MODULE_DEVICE_TABLE(of, lt6911uxc_of_match); #endif static struct i2c_driver lt6911uxc_driver = { .driver = { .name = LT6911UXC_NAME, .of_match_table = of_match_ptr(lt6911uxc_of_match), }, .probe = lt6911uxc_probe, .remove = lt6911uxc_remove, }; static int __init lt6911uxc_driver_init(void) { return i2c_add_driver(<6911uxc_driver); } static void __exit lt6911uxc_driver_exit(void) { i2c_del_driver(<6911uxc_driver); } device_initcall_sync(lt6911uxc_driver_init); module_exit(lt6911uxc_driver_exit); MODULE_DESCRIPTION("Lontium LT6911UXC HDMI to MIPI CSI-2 bridge driver"); MODULE_AUTHOR("Dingxian Wen "); MODULE_AUTHOR("Jianwei Fan "); MODULE_LICENSE("GPL v2");