diff --git a/drivers/media/i2c/maxim/remote/Kconfig b/drivers/media/i2c/maxim/remote/Kconfig index fb237d1a5638..82d9a45c7931 100644 --- a/drivers/media/i2c/maxim/remote/Kconfig +++ b/drivers/media/i2c/maxim/remote/Kconfig @@ -56,4 +56,13 @@ config VIDEO_MAXIM_CAM_OX01F10 To compile this driver as a module, choose M here: the module will be called ox01f10. +config VIDEO_MAXIM_CAM_OV231X + tristate "Maxim Remote Sensor ov2311/ov2312 support" + depends on VIDEO_MAXIM_SERDES + help + This driver supports the remote sensor ov231x. + + To compile this driver as a module, choose M here: the + module will be called ov231x. + endmenu diff --git a/drivers/media/i2c/maxim/remote/Makefile b/drivers/media/i2c/maxim/remote/Makefile index fae19cc11557..8cc049f6469a 100644 --- a/drivers/media/i2c/maxim/remote/Makefile +++ b/drivers/media/i2c/maxim/remote/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_VIDEO_MAXIM_SER_MAX96717) += max96717.o obj-$(CONFIG_VIDEO_MAXIM_CAM_SC320AT) += sc320at.o obj-$(CONFIG_VIDEO_MAXIM_CAM_OX01F10) += ox01f10.o +obj-$(CONFIG_VIDEO_MAXIM_CAM_OV231X) += ov231x.o diff --git a/drivers/media/i2c/maxim/remote/ov231x.c b/drivers/media/i2c/maxim/remote/ov231x.c new file mode 100644 index 000000000000..2e28c9cd8061 --- /dev/null +++ b/drivers/media/i2c/maxim/remote/ov231x.c @@ -0,0 +1,1092 @@ +// 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, 0x00) + +#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); + struct v4l2_mbus_framefmt *try_fmt = + v4l2_subdev_get_try_format(sd, fh->pad, 0); + 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 */ + mutex_unlock(&ov231x->mutex); + ret = v4l2_ctrl_handler_setup(&ov231x->ctrl_handler); + mutex_lock(&ov231x->mutex); + 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; + + mutex_lock(&ov231x->mutex); + fi->interval = mode->max_fps; + mutex_unlock(&ov231x->mutex); + + return 0; +} + +static int ov231x_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct ov231x *ov231x = v4l2_get_subdevdata(sd); + + if (code->index != 0) + return -EINVAL; + code->code = ov231x->cur_mode->bus_fmt; + + return 0; +} + +static int ov231x_enum_frame_sizes(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + 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; +} + +static int ov231x_enum_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_interval_enum *fie) +{ + 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]; +} + +static int ov231x_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + 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 + *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; +#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; +} + +static int ov231x_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + 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 + fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); +#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; +} + +static int ov231x_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + 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; +} + +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; +} + +#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, +}; + +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, + .get_mbus_config = ov231x_g_mbus_config, +}; + +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)); + + ret = v4l2_async_register_subdev_sensor_common(sd); + 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; +} + +static int ov231x_remove(struct i2c_client *client) +{ + 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); + + return 0; +} + +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 = OV231X_NAME, + .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");