// SPDX-License-Identifier: GPL-2.0 /* * Maxim Remote Sensor OmniVision OV2311/OV2312 driver * * Copyright (C) 2023 Rockchip Electronics Co., Ltd. * * Author: Cai Wenzhong * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "maxim_remote.h" #define DRIVER_VERSION KERNEL_VERSION(1, 0x00, 0x02) #ifndef V4L2_CID_DIGITAL_GAIN #define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN #endif #define OV231X_NAME "ov231x" #define OV231X_XVCLK_FREQ 24000000 #define OV231X_MIPI_FREQ_148M 148000000 #define OV231X_I2C_ADDR_DEF 0x30 #define REG_NULL 0xFFFF #define OV231X_REG_VALUE_08BIT 1 struct i2c_regval { u16 reg_addr; u8 reg_val; }; struct ov231x_mode { u32 bus_fmt; u32 width; u32 height; struct v4l2_fract max_fps; u32 hts_def; u32 vts_def; u32 exp_def; u32 link_freq_idx; u32 bpp; const struct i2c_regval *reg_list; }; struct ov231x { struct i2c_client *client; struct regulator *poc_regulator; struct mutex mutex; struct v4l2_subdev subdev; struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *exposure; struct v4l2_ctrl *anal_gain; struct v4l2_ctrl *digi_gain; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *test_pattern; struct v4l2_ctrl *pixel_rate; struct v4l2_ctrl *link_freq; struct v4l2_ctrl *h_flip; struct v4l2_ctrl *v_flip; struct v4l2_fwnode_endpoint bus_cfg; bool streaming; bool power_on; bool hot_plug; u8 is_reset; const struct ov231x_mode *supported_modes; const struct ov231x_mode *cur_mode; u32 cfg_modes_num; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; u8 cam_i2c_addr_def; u8 cam_i2c_addr_map; struct maxim_remote_ser *remote_ser; }; static const struct i2c_regval ov231x_1600x1300_regs[] = { { REG_NULL, 0x00 }, }; /* * The width and height must be configured to be * the same as the current output resolution of the sensor. * The input width of the isp needs to be 16 aligned. * The input height of the isp needs to be 8 aligned. * If the width or height does not meet the alignment rules, * you can configure the cropping parameters with the following function to * crop out the appropriate resolution. * struct v4l2_subdev_pad_ops { * .get_selection * } */ static const struct ov231x_mode supported_modes[] = { { .width = 1600, .height = 1300, .max_fps = { .numerator = 10000, .denominator = 300000, }, .link_freq_idx = 0, .bus_fmt = MEDIA_BUS_FMT_UYVY8_2X8, .bpp = 16, .reg_list = ov231x_1600x1300_regs, } }; static const s64 link_freq_menu_items[] = { OV231X_MIPI_FREQ_148M, }; /* Write registers up to 4 at a time */ static int __maybe_unused ov231x_i2c_write_reg(struct i2c_client *client, u16 reg_addr, u32 val_len, u32 reg_val) { u32 buf_i, val_i; u8 buf[6]; u8 *val_p; __be32 val_be; dev_info(&client->dev, "i2c addr(0x%02x) write: 0x%04x = 0x%08x (%d)\n", client->addr, reg_addr, reg_val, val_len); if (val_len > 4) return -EINVAL; buf[0] = reg_addr >> 8; buf[1] = reg_addr & 0xff; buf_i = 2; val_be = cpu_to_be32(reg_val); val_p = (u8 *)&val_be; val_i = 4 - val_len; while (val_i < 4) buf[buf_i++] = val_p[val_i++]; if (i2c_master_send(client, buf, (val_len + 2)) != (val_len + 2)) { dev_err(&client->dev, "%s: writing register 0x%04x from 0x%02x failed\n", __func__, reg_addr, client->addr); return -EIO; } return 0; } /* Read registers up to 4 at a time */ static int __maybe_unused ov231x_i2c_read_reg(struct i2c_client *client, u16 reg_addr, u32 val_len, u32 *reg_val) { struct i2c_msg msgs[2]; u8 *data_be_p; __be32 data_be = 0; __be16 reg_addr_be = cpu_to_be16(reg_addr); u8 *reg_be_p; int ret; if (val_len > 4 || !val_len) return -EINVAL; data_be_p = (u8 *)&data_be; reg_be_p = (u8 *)®_addr_be; /* Write register address */ msgs[0].addr = client->addr; msgs[0].flags = 0; msgs[0].len = 2; msgs[0].buf = reg_be_p; /* Read data from register */ msgs[1].addr = client->addr; msgs[1].flags = I2C_M_RD; msgs[1].len = val_len; msgs[1].buf = &data_be_p[4 - val_len]; ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (ret != ARRAY_SIZE(msgs)) { dev_err(&client->dev, "%s: reading register 0x%04x from 0x%02x failed\n", __func__, reg_addr, client->addr); return -EIO; } *reg_val = be32_to_cpu(data_be); #if 0 dev_info(&client->dev, "i2c addr(0x%02x) read: 0x%04x = 0x%08x (%d)\n", client->addr, reg_addr, *reg_val, val_len); #endif return 0; } static int __maybe_unused ov231x_i2c_write_array(struct i2c_client *client, const struct i2c_regval *regs) { u32 i = 0; int ret = 0; for (i = 0; (ret == 0) && (regs[i].reg_addr != REG_NULL); i++) { ret = ov231x_i2c_write_reg(client, regs[i].reg_addr, OV231X_REG_VALUE_08BIT, regs[i].reg_val); } return ret; } static int __ov231x_power_on(struct ov231x *ov231x) { struct device *dev = &ov231x->client->dev; int ret = 0; dev_info(dev, "ov231x device power on\n"); ret = regulator_enable(ov231x->poc_regulator); if (ret < 0) { dev_err(dev, "Unable to turn PoC regulator on\n"); return ret; } return 0; } static void __ov231x_power_off(struct ov231x *ov231x) { struct device *dev = &ov231x->client->dev; int ret = 0; dev_info(dev, "ov231x device power off\n"); ret = regulator_disable(ov231x->poc_regulator); if (ret < 0) dev_warn(dev, "Unable to turn PoC regulator off\n"); } static int ov231x_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov231x *ov231x = v4l2_get_subdevdata(sd); int ret = 0; ret = __ov231x_power_on(ov231x); return ret; } static int ov231x_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov231x *ov231x = v4l2_get_subdevdata(sd); __ov231x_power_off(ov231x); return 0; } static const struct dev_pm_ops ov231x_pm_ops = { SET_RUNTIME_PM_OPS( ov231x_runtime_suspend, ov231x_runtime_resume, NULL) }; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int ov231x_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->state, 0); #else struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd, fh->pad, 0); #endif const struct ov231x_mode *def_mode = &ov231x->supported_modes[0]; mutex_lock(&ov231x->mutex); /* Initialize try_fmt */ try_fmt->width = def_mode->width; try_fmt->height = def_mode->height; try_fmt->code = def_mode->bus_fmt; try_fmt->field = V4L2_FIELD_NONE; mutex_unlock(&ov231x->mutex); /* No crop or compose */ return 0; } #endif static int ov231x_s_power(struct v4l2_subdev *sd, int on) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); struct i2c_client *client = ov231x->client; int ret = 0; mutex_lock(&ov231x->mutex); /* If the power state is not modified - no work to do. */ if (ov231x->power_on == !!on) goto unlock_and_return; if (on) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ov231x->power_on = true; } else { pm_runtime_put(&client->dev); ov231x->power_on = false; } unlock_and_return: mutex_unlock(&ov231x->mutex); return ret; } static void ov231x_get_module_inf(struct ov231x *ov231x, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strscpy(inf->base.sensor, OV231X_NAME, sizeof(inf->base.sensor)); strscpy(inf->base.module, ov231x->module_name, sizeof(inf->base.module)); strscpy(inf->base.lens, ov231x->len_name, sizeof(inf->base.lens)); } static void ov231x_get_vicap_rst_inf(struct ov231x *ov231x, struct rkmodule_vicap_reset_info *rst_info) { struct i2c_client *client = ov231x->client; rst_info->is_reset = ov231x->hot_plug; ov231x->hot_plug = false; rst_info->src = RKCIF_RESET_SRC_ERR_HOTPLUG; dev_info(&client->dev, "%s: rst_info->is_reset:%d.\n", __func__, rst_info->is_reset); } static void ov231x_set_vicap_rst_inf(struct ov231x *ov231x, struct rkmodule_vicap_reset_info rst_info) { ov231x->is_reset = rst_info.is_reset; } static long ov231x_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); long ret = 0; dev_dbg(&ov231x->client->dev, "ioctl cmd = 0x%08x\n", cmd); switch (cmd) { case RKMODULE_GET_MODULE_INFO: ov231x_get_module_inf(ov231x, (struct rkmodule_inf *)arg); break; case RKMODULE_GET_VICAP_RST_INFO: ov231x_get_vicap_rst_inf(ov231x, (struct rkmodule_vicap_reset_info *)arg); break; case RKMODULE_SET_VICAP_RST_INFO: ov231x_set_vicap_rst_inf(ov231x, *(struct rkmodule_vicap_reset_info *)arg); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #ifdef CONFIG_COMPAT static long ov231x_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; struct rkmodule_vicap_reset_info *vicap_rst_inf; long ret = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = ov231x_ioctl(sd, cmd, inf); if (!ret) { ret = copy_to_user(up, inf, sizeof(*inf)); if (ret) ret = -EFAULT; } kfree(inf); break; case RKMODULE_GET_VICAP_RST_INFO: vicap_rst_inf = kzalloc(sizeof(*vicap_rst_inf), GFP_KERNEL); if (!vicap_rst_inf) { ret = -ENOMEM; return ret; } ret = ov231x_ioctl(sd, cmd, vicap_rst_inf); if (!ret) { ret = copy_to_user(up, vicap_rst_inf, sizeof(*vicap_rst_inf)); if (ret) ret = -EFAULT; } kfree(vicap_rst_inf); break; case RKMODULE_SET_VICAP_RST_INFO: vicap_rst_inf = kzalloc(sizeof(*vicap_rst_inf), GFP_KERNEL); if (!vicap_rst_inf) { ret = -ENOMEM; return ret; } ret = copy_from_user(vicap_rst_inf, up, sizeof(*vicap_rst_inf)); if (!ret) ret = ov231x_ioctl(sd, cmd, vicap_rst_inf); else ret = -EFAULT; kfree(vicap_rst_inf); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif /* CONFIG_COMPAT */ static int __ov231x_start_stream(struct ov231x *ov231x) { maxim_remote_ser_t *remote_ser = ov231x->remote_ser; struct i2c_client *client = ov231x->client; struct device *dev = &client->dev; int ret = 0; if (remote_ser == NULL) { dev_err(dev, "%s: remote_ser error\n", __func__); return -EINVAL; } if (remote_ser->ser_ops == NULL) { dev_err(dev, "%s: remote_ser ser_ops error\n", __func__); return -EINVAL; } ret = remote_ser->ser_ops->ser_module_init(remote_ser); if (ret) { dev_err(dev, "%s: remote_ser module_init error\n", __func__); return ret; } ret = ov231x_i2c_write_array(client, ov231x->cur_mode->reg_list); if (ret) { dev_err(dev, "%s: ov231x i2c write array error\n", __func__); return ret; } /* In case these controls are set before streaming */ ret = __v4l2_ctrl_handler_setup(&ov231x->ctrl_handler); if (ret) return ret; ret = remote_ser->ser_ops->ser_pclk_detect(remote_ser); if (ret) { dev_err(dev, "%s: remote_ser pclk_detect error\n", __func__); return ret; } return 0; } static int __ov231x_stop_stream(struct ov231x *ov231x) { maxim_remote_ser_t *remote_ser = ov231x->remote_ser; struct device *dev = &ov231x->client->dev; int ret = 0; if (remote_ser == NULL) { dev_err(dev, "%s: remote_ser error\n", __func__); return -EINVAL; } if (remote_ser->ser_ops == NULL) { dev_err(dev, "%s: remote_ser ser_ops error\n", __func__); return -EINVAL; } ret = remote_ser->ser_ops->ser_module_deinit(remote_ser); if (ret) { dev_err(dev, "%s: remote_ser module_deinit error\n", __func__); return ret; } return 0; } static int ov231x_s_stream(struct v4l2_subdev *sd, int on) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); struct i2c_client *client = ov231x->client; int ret = 0; dev_info(&client->dev, "%s: on = %d\n", __func__, on); mutex_lock(&ov231x->mutex); on = !!on; if (on == ov231x->streaming) goto unlock_and_return; if (on) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) { pm_runtime_put_noidle(&client->dev); goto unlock_and_return; } ret = __ov231x_start_stream(ov231x); if (ret) { v4l2_err(sd, "start stream failed while write regs\n"); pm_runtime_put(&client->dev); goto unlock_and_return; } } else { __ov231x_stop_stream(ov231x); pm_runtime_put(&client->dev); } ov231x->streaming = on; unlock_and_return: mutex_unlock(&ov231x->mutex); return ret; } static int ov231x_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); const struct ov231x_mode *mode = ov231x->cur_mode; fi->interval = mode->max_fps; return 0; } #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE static int ov231x_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) #else static int ov231x_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) #endif { struct ov231x *ov231x = v4l2_get_subdevdata(sd); if (code->index != 0) return -EINVAL; code->code = ov231x->cur_mode->bus_fmt; return 0; } #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE static int ov231x_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) #else static int ov231x_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) #endif { struct ov231x *ov231x = v4l2_get_subdevdata(sd); if (fse->index >= ov231x->cfg_modes_num) return -EINVAL; if (fse->code != ov231x->supported_modes[fse->index].bus_fmt) return -EINVAL; fse->min_width = ov231x->supported_modes[fse->index].width; fse->max_width = ov231x->supported_modes[fse->index].width; fse->max_height = ov231x->supported_modes[fse->index].height; fse->min_height = ov231x->supported_modes[fse->index].height; return 0; } #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE static int ov231x_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval_enum *fie) #else static int ov231x_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_interval_enum *fie) #endif { struct ov231x *ov231x = v4l2_get_subdevdata(sd); if (fie->index >= ov231x->cfg_modes_num) return -EINVAL; fie->code = ov231x->supported_modes[fie->index].bus_fmt; fie->width = ov231x->supported_modes[fie->index].width; fie->height = ov231x->supported_modes[fie->index].height; fie->interval = ov231x->supported_modes[fie->index].max_fps; return 0; } static int ov231x_get_reso_dist(const struct ov231x_mode *mode, struct v4l2_mbus_framefmt *framefmt) { return abs(mode->width - framefmt->width) + abs(mode->height - framefmt->height); } static const struct ov231x_mode * ov231x_find_best_fit(struct ov231x *ov231x, struct v4l2_subdev_format *fmt) { struct v4l2_mbus_framefmt *framefmt = &fmt->format; int dist; int cur_best_fit = 0; int cur_best_fit_dist = -1; unsigned int i; for (i = 0; i < ov231x->cfg_modes_num; i++) { dist = ov231x_get_reso_dist(&ov231x->supported_modes[i], framefmt); if ((cur_best_fit_dist == -1 || dist < cur_best_fit_dist) && (ov231x->supported_modes[i].bus_fmt == framefmt->code)) { cur_best_fit_dist = dist; cur_best_fit = i; } } return &ov231x->supported_modes[cur_best_fit]; } #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE static int ov231x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) #else static int ov231x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) #endif { struct ov231x *ov231x = v4l2_get_subdevdata(sd); struct device *dev = &ov231x->client->dev; const struct ov231x_mode *mode; u64 link_freq = 0, pixel_rate = 0; u8 data_lanes = ov231x->bus_cfg.bus.mipi_csi2.num_data_lanes; mutex_lock(&ov231x->mutex); mode = ov231x_find_best_fit(ov231x, fmt); fmt->format.code = mode->bus_fmt; fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.field = V4L2_FIELD_NONE; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format; #else *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; #endif #else mutex_unlock(&ov231x->mutex); return -ENOTTY; #endif } else { ov231x->cur_mode = mode; __v4l2_ctrl_s_ctrl(ov231x->link_freq, mode->link_freq_idx); /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ link_freq = link_freq_menu_items[mode->link_freq_idx]; pixel_rate = (u32)link_freq / mode->bpp * 2 * data_lanes; __v4l2_ctrl_s_ctrl_int64(ov231x->pixel_rate, pixel_rate); dev_info(dev, "mipi_freq_idx = %d, mipi_link_freq = %lld\n", mode->link_freq_idx, link_freq); dev_info(dev, "pixel_rate = %lld, bpp = %d\n", pixel_rate, mode->bpp); } mutex_unlock(&ov231x->mutex); return 0; } #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE static int ov231x_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) #else static int ov231x_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) #endif { struct ov231x *ov231x = v4l2_get_subdevdata(sd); const struct ov231x_mode *mode = ov231x->cur_mode; mutex_lock(&ov231x->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE fmt->format = *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); #else fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); #endif #else mutex_unlock(&ov231x->mutex); return -ENOTTY; #endif } else { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = mode->bus_fmt; fmt->format.field = V4L2_FIELD_NONE; } mutex_unlock(&ov231x->mutex); return 0; } #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE static int ov231x_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) #else static int ov231x_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_selection *sel) #endif { struct ov231x *ov231x = v4l2_get_subdevdata(sd); if (sel->target == V4L2_SEL_TGT_CROP_BOUNDS) { sel->r.left = 0; sel->r.width = ov231x->cur_mode->width; sel->r.top = 0; sel->r.height = ov231x->cur_mode->height; return 0; } return -EINVAL; } #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE static int ov231x_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *config) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); config->type = V4L2_MBUS_CSI2_DPHY; config->bus.mipi_csi2 = ov231x->bus_cfg.bus.mipi_csi2; return 0; } #elif KERNEL_VERSION(5, 10, 0) <= LINUX_VERSION_CODE static int ov231x_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *config) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); u32 val = 0; u8 data_lanes = ov231x->bus_cfg.bus.mipi_csi2.num_data_lanes; val |= V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; val |= (1 << (data_lanes - 1)); val |= V4L2_MBUS_CSI2_CHANNEL_3 | V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_1 | V4L2_MBUS_CSI2_CHANNEL_0; config->type = V4L2_MBUS_CSI2_DPHY; config->flags = val; return 0; } #else static int ov231x_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *config) { struct ov231x *ov231x = v4l2_get_subdevdata(sd); u32 val = 0; u8 data_lanes = ov231x->bus_cfg.bus.mipi_csi2.num_data_lanes; val |= V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; val |= (1 << (data_lanes - 1)); val |= V4L2_MBUS_CSI2_CHANNEL_3 | V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_1 | V4L2_MBUS_CSI2_CHANNEL_0; config->type = V4L2_MBUS_CSI2; config->flags = val; return 0; } #endif /* LINUX_VERSION_CODE */ #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_internal_ops ov231x_internal_ops = { .open = ov231x_open, }; #endif static const struct v4l2_subdev_core_ops ov231x_core_ops = { .s_power = ov231x_s_power, .ioctl = ov231x_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = ov231x_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops ov231x_video_ops = { .s_stream = ov231x_s_stream, .g_frame_interval = ov231x_g_frame_interval, #if KERNEL_VERSION(5, 10, 0) > LINUX_VERSION_CODE .g_mbus_config = ov231x_g_mbus_config, #endif }; static const struct v4l2_subdev_pad_ops ov231x_pad_ops = { .enum_mbus_code = ov231x_enum_mbus_code, .enum_frame_size = ov231x_enum_frame_sizes, .enum_frame_interval = ov231x_enum_frame_interval, .get_fmt = ov231x_get_fmt, .set_fmt = ov231x_set_fmt, .get_selection = ov231x_get_selection, #if KERNEL_VERSION(5, 10, 0) <= LINUX_VERSION_CODE .get_mbus_config = ov231x_g_mbus_config, #endif }; static const struct v4l2_subdev_ops ov231x_subdev_ops = { .core = &ov231x_core_ops, .video = &ov231x_video_ops, .pad = &ov231x_pad_ops, }; static int ov231x_initialize_controls(struct ov231x *ov231x) { struct device *dev = &ov231x->client->dev; const struct ov231x_mode *mode; struct v4l2_ctrl_handler *handler; u64 link_freq = 0, pixel_rate = 0; u8 data_lanes; int ret = 0; handler = &ov231x->ctrl_handler; mode = ov231x->cur_mode; ret = v4l2_ctrl_handler_init(handler, 2); if (ret) return ret; handler->lock = &ov231x->mutex; /* ctrl handler: link freq */ ov231x->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); __v4l2_ctrl_s_ctrl(ov231x->link_freq, mode->link_freq_idx); link_freq = link_freq_menu_items[mode->link_freq_idx]; dev_info(dev, "mipi_freq_idx = %d, mipi_link_freq = %lld\n", mode->link_freq_idx, link_freq); /* ctrl handler: pixel rate */ /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ data_lanes = ov231x->bus_cfg.bus.mipi_csi2.num_data_lanes; pixel_rate = (u32)link_freq / mode->bpp * 2 * data_lanes; ov231x->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, pixel_rate, 1, pixel_rate); dev_info(dev, "pixel_rate = %lld, bpp = %d\n", pixel_rate, mode->bpp); if (handler->error) { ret = handler->error; dev_err(&ov231x->client->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } ov231x->subdev.ctrl_handler = handler; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int ov231x_parse_dt(struct ov231x *ov231x) { struct device *dev = &ov231x->client->dev; struct device_node *of_node = dev->of_node; u32 value = 0; int ret = 0; dev_info(dev, "=== ov231x parse dt ===\n"); ret = of_property_read_u32(of_node, "cam-i2c-addr-def", &value); if (ret == 0) { dev_info(dev, "cam-i2c-addr-def property: 0x%x", value); ov231x->cam_i2c_addr_def = value; } else { ov231x->cam_i2c_addr_def = OV231X_I2C_ADDR_DEF; } return 0; } static int ov231x_mipi_data_lanes_parse(struct ov231x *ov231x) { struct device *dev = &ov231x->client->dev; struct device_node *endpoint = NULL; u8 mipi_data_lanes; int ret = 0; endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); if (!endpoint) { dev_err(dev, "Failed to get endpoint\n"); return -EINVAL; } ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), &ov231x->bus_cfg); if (ret) { dev_err(dev, "Failed to get bus config\n"); return -EINVAL; } mipi_data_lanes = ov231x->bus_cfg.bus.mipi_csi2.num_data_lanes; dev_info(dev, "mipi csi2 phy data lanes = %d\n", mipi_data_lanes); return 0; } static int ov231x_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct ov231x *ov231x = NULL; struct v4l2_subdev *sd = NULL; maxim_remote_ser_t *remote_ser = NULL; char facing[2]; int ret = 0; dev_info(dev, "driver version: %02x.%02x.%02x", DRIVER_VERSION >> 16, (DRIVER_VERSION & 0xff00) >> 8, DRIVER_VERSION & 0x00ff); ov231x = devm_kzalloc(dev, sizeof(*ov231x), GFP_KERNEL); if (!ov231x) { dev_err(dev, "ov231x probe no memory error\n"); return -ENOMEM; } ov231x->client = client; ov231x->cam_i2c_addr_map = client->addr; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &ov231x->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &ov231x->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &ov231x->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &ov231x->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } // poc regulator ov231x->poc_regulator = devm_regulator_get(dev, "poc"); if (IS_ERR(ov231x->poc_regulator)) { if (PTR_ERR(ov231x->poc_regulator) != -EPROBE_DEFER) dev_err(dev, "Unable to get PoC regulator (%ld)\n", PTR_ERR(ov231x->poc_regulator)); else dev_err(dev, "Get PoC regulator deferred\n"); ret = PTR_ERR(ov231x->poc_regulator); return ret; } ov231x_mipi_data_lanes_parse(ov231x); ov231x->supported_modes = supported_modes; ov231x->cfg_modes_num = ARRAY_SIZE(supported_modes); ov231x->cur_mode = &ov231x->supported_modes[0]; mutex_init(&ov231x->mutex); ret = __ov231x_power_on(ov231x); if (ret) goto err_destroy_mutex; pm_runtime_set_active(dev); pm_runtime_get_noresume(dev); pm_runtime_enable(dev); sd = &ov231x->subdev; v4l2_i2c_subdev_init(sd, client, &ov231x_subdev_ops); ret = ov231x_initialize_controls(ov231x); if (ret) goto err_power_off; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API sd->internal_ops = &ov231x_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; #endif #if defined(CONFIG_MEDIA_CONTROLLER) ov231x->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_pads_init(&sd->entity, 1, &ov231x->pad); if (ret < 0) goto err_free_handler; #endif v4l2_set_subdevdata(sd, ov231x); memset(facing, 0, sizeof(facing)); if (strcmp(ov231x->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", ov231x->module_index, facing, OV231X_NAME, dev_name(sd->dev)); #if KERNEL_VERSION(6, 1, 0) <= LINUX_VERSION_CODE ret = v4l2_async_register_subdev_sensor(sd); #else ret = v4l2_async_register_subdev_sensor_common(sd); #endif if (ret) { dev_err(dev, "v4l2 async register subdev failed\n"); goto err_clean_entity; } ov231x_parse_dt(ov231x); /* remote serializer bind */ ov231x->remote_ser = NULL; remote_ser = maxim_remote_cam_bind_ser(dev); if (remote_ser != NULL) { dev_info(dev, "remote serializer bind success\n"); remote_ser->cam_i2c_addr_def = ov231x->cam_i2c_addr_def; remote_ser->cam_i2c_addr_map = ov231x->cam_i2c_addr_map; ov231x->remote_ser = remote_ser; } else { dev_err(dev, "remote serializer bind fail\n"); } pm_runtime_set_autosuspend_delay(dev, 1000); pm_runtime_use_autosuspend(dev); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); return 0; err_clean_entity: #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif err_free_handler: v4l2_ctrl_handler_free(&ov231x->ctrl_handler); err_power_off: pm_runtime_disable(dev); pm_runtime_put_noidle(dev); __ov231x_power_off(ov231x); err_destroy_mutex: mutex_destroy(&ov231x->mutex); return ret; } #if KERNEL_VERSION(6, 1, 0) > LINUX_VERSION_CODE static int ov231x_remove(struct i2c_client *client) #else static void ov231x_remove(struct i2c_client *client) #endif { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov231x *ov231x = v4l2_get_subdevdata(sd); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l2_ctrl_handler_free(&ov231x->ctrl_handler); mutex_destroy(&ov231x->mutex); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) __ov231x_power_off(ov231x); pm_runtime_set_suspended(&client->dev); #if KERNEL_VERSION(6, 1, 0) > LINUX_VERSION_CODE return 0; #endif } static const struct of_device_id ov231x_of_match[] = { { .compatible = "maxim,ovti,ov2311" }, { .compatible = "maxim,ovti,ov2312" }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, ov231x_of_match); static struct i2c_driver ov231x_i2c_driver = { .driver = { .name = "maxim-ov231x", .pm = &ov231x_pm_ops, .of_match_table = of_match_ptr(ov231x_of_match), }, .probe = &ov231x_probe, .remove = &ov231x_remove, }; module_i2c_driver(ov231x_i2c_driver); MODULE_AUTHOR("Cai Wenzhong "); MODULE_DESCRIPTION("Maxim Remote Sensor OmniVision ov2311/ov2312 Driver"); MODULE_LICENSE("GPL");