// SPDX-License-Identifier: GPL-2.0 /* * GC0312 CMOS Image Sensor driver * * Copyright (C) 2015 Texas Instruments, Inc. * * Benoit Parrot * Lad, Prabhakar * * This program is free software; you may redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #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 #include #include #define DRIVER_NAME "gc0312" #define GC0312_PIXEL_RATE (96 * 1000 * 1000) /* * GC0312 register definitions */ #define REG_SOFTWARE_STANDBY 0xf3 #define REG_SC_CHIP_ID_H 0xf0 #define REG_SC_CHIP_ID_L 0xf1 #define REG_NULL 0xFFFF /* Array end token */ #define SENSOR_ID(_msb, _lsb) ((_msb) << 8 | (_lsb)) #define GC0312_ID 0xb310 struct sensor_register { u16 addr; u8 value; }; struct gc0312_framesize { u16 width; u16 height; u16 max_exp_lines; const struct sensor_register *regs; }; struct gc0312_pll_ctrl { u8 ctrl1; u8 ctrl2; u8 ctrl3; }; struct gc0312_pixfmt { u32 code; /* Output format Register Value (REG_FORMAT_CTRL00) */ struct sensor_register *format_ctrl_regs; }; struct pll_ctrl_reg { unsigned int div; unsigned char reg; }; static const char * const gc0312_supply_names[] = { "dovdd", /* Digital I/O power */ "avdd", /* Analog power */ "dvdd", /* Digital core power */ }; #define GC0312_NUM_SUPPLIES ARRAY_SIZE(gc0312_supply_names) struct gc0312 { struct v4l2_subdev sd; struct media_pad pad; struct v4l2_mbus_framefmt format; unsigned int xvclk_frequency; struct clk *xvclk; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[GC0312_NUM_SUPPLIES]; struct mutex lock; struct i2c_client *client; struct v4l2_ctrl_handler ctrls; struct v4l2_ctrl *link_frequency; const struct gc0312_framesize *frame_size; int streaming; u32 module_index; const char *module_facing; const char *module_name; const char *len_name; }; static const struct sensor_register gc0312_vga_regs[] = { {0xfe, 0xf0}, {0xfe, 0xf0}, {0xfe, 0x00}, {0xfc, 0x0e}, {0xfc, 0x0e}, {0xf2, 0x07}, /*output_disable*/ {0xf3, 0x00}, {0xf7, 0x1b}, {0xf8, 0x04}, {0xf9, 0x0e}, {0xfa, 0x11}, /*CISCTL reg*/ {0x00, 0x2f}, {0x01, 0x0f}, {0x02, 0x04}, {0x03, 0x03}, {0x04, 0x50}, {0x09, 0x00}, {0x0a, 0x00}, {0x0b, 0x00}, {0x0c, 0x04}, {0x0d, 0x01}, {0x0e, 0xe8}, {0x0f, 0x02}, {0x10, 0x88}, {0x16, 0x00}, {0x17, 0x17}, {0x18, 0x1a}, {0x19, 0x14}, {0x1b, 0x48}, /*1c travis 20140929 update for lag*/ {0x1c, 0x1c}, {0x1e, 0x6b}, {0x1f, 0x28}, /*0x89 travis20140801*/ {0x20, 0x8b}, {0x21, 0x49}, /*b0 travis 20140929 update for lag*/ {0x22, 0xb0}, {0x23, 0x04}, {0x24, 0x16}, {0x34, 0x20}, /*BLK*/ {0x26, 0x23}, {0x28, 0xff}, {0x29, 0x00}, {0x32, 0x00}, {0x33, 0x10}, {0x37, 0x20}, {0x38, 0x10}, {0x47, 0x80}, {0x4e, 0x66}, {0xa8, 0x02}, {0xa9, 0x80}, /*ISP reg*/ {0x40, 0xff}, {0x41, 0x21}, {0x42, 0xcf}, {0x44, 0x02}, {0x45, 0xa8}, /*sync 02*/ {0x46, 0x02}, {0x4a, 0x11}, {0x4b, 0x01}, {0x4c, 0x20}, {0x4d, 0x05}, {0x4f, 0x01}, {0x50, 0x01}, {0x54, 0x04}, {0x55, 0x01}, {0x56, 0xe0}, {0x57, 0x02}, {0x58, 0x80}, /*GAIN*/ {0x70, 0x70}, {0x5a, 0x84}, {0x5b, 0xc9}, {0x5c, 0xed}, {0x77, 0x74}, {0x78, 0x40}, {0x79, 0x5f}, /*DNDD*/ {0x82, 0x14}, {0x83, 0x0b}, {0x89, 0xf0}, /*EEINTP*/ {0x8f, 0xaa}, {0x90, 0x8c}, {0x91, 0x90}, {0x92, 0x03}, {0x93, 0x03}, {0x94, 0x05}, {0x95, 0x65}, {0x96, 0xf0}, /*ASDE*/ {0xfe, 0x00}, {0x9a, 0x20}, {0x9b, 0x80}, {0x9c, 0x40}, {0x9d, 0x80}, {0xa1, 0x30}, {0xa2, 0x32}, {0xa4, 0x80}, {0xa5, 0x28}, {0xaa, 0x30}, {0xac, 0x22}, /*GAMMA*/ {0xfe, 0x00}, {0xbf, 0x08}, {0xc0, 0x16}, {0xc1, 0x28}, {0xc2, 0x41}, {0xc3, 0x5a}, {0xc4, 0x6c}, {0xc5, 0x7a}, {0xc6, 0x96}, {0xc7, 0xac}, {0xc8, 0xbc}, {0xc9, 0xc9}, {0xca, 0xd3}, {0xcb, 0xdd}, {0xcc, 0xe5}, {0xcd, 0xf1}, {0xce, 0xfa}, {0xcf, 0xff}, /*YCP*/ {0xd0, 0x40}, {0xd1, 0x34}, {0xd2, 0x34}, {0xd3, 0x40}, {0xd6, 0xf2}, {0xd7, 0x1b}, {0xd8, 0x18}, {0xdd, 0x03}, /*AEC*/ {0xfe, 0x01}, {0x05, 0x30}, {0x06, 0x75}, {0x07, 0x40}, {0x08, 0xb0}, {0x0a, 0xc5}, {0x0b, 0x11}, {0x0c, 0x00}, {0x12, 0x52}, {0x13, 0x38}, {0x18, 0x95}, {0x19, 0x96}, {0x1f, 0x20}, {0x20, 0xc0}, {0x3e, 0x40}, {0x3f, 0x57}, {0x40, 0x7d}, {0x03, 0x60}, {0x44, 0x02}, /*AWB*/ {0xfe, 0x01}, {0x1c, 0x91}, {0x21, 0x15}, {0x50, 0x80}, {0x56, 0x04}, {0x59, 0x08}, {0x5b, 0x02}, {0x61, 0x8d}, {0x62, 0xa7}, {0x63, 0xd0}, {0x65, 0x06}, {0x66, 0x06}, {0x67, 0x84}, {0x69, 0x08}, {0x6a, 0x25}, {0x6b, 0x01}, {0x6c, 0x00}, {0x6d, 0x02}, {0x6e, 0xf0}, {0x6f, 0x80}, {0x76, 0x80}, {0x78, 0xaf}, {0x79, 0x75}, {0x7a, 0x40}, {0x7b, 0x50}, {0x7c, 0x0c}, {0x90, 0xc9}, {0x91, 0xbe}, {0x92, 0xe2}, {0x93, 0xc9}, {0x95, 0x1b}, {0x96, 0xe2}, {0x97, 0x49}, {0x98, 0x1b}, {0x9a, 0x49}, {0x9b, 0x1b}, {0x9c, 0xc3}, {0x9d, 0x49}, {0x9f, 0xc7}, {0xa0, 0xc8}, {0xa1, 0x00}, {0xa2, 0x00}, {0x86, 0x00}, {0x87, 0x00}, {0x88, 0x00}, {0x89, 0x00}, {0xa4, 0xb9}, {0xa5, 0xa0}, {0xa6, 0xba}, {0xa7, 0x92}, {0xa9, 0xba}, {0xaa, 0x80}, {0xab, 0x9d}, {0xac, 0x7f}, {0xae, 0xbb}, {0xaf, 0x9d}, {0xb0, 0xc8}, {0xb1, 0x97}, {0xb3, 0xb7}, {0xb4, 0x7f}, {0xb5, 0x00}, {0xb6, 0x00}, {0x8b, 0x00}, {0x8c, 0x00}, {0x8d, 0x00}, {0x8e, 0x00}, {0x94, 0x55}, {0x99, 0xa6}, {0x9e, 0xaa}, {0xa3, 0x0a}, {0x8a, 0x00}, {0xa8, 0x55}, {0xad, 0x55}, {0xb2, 0x55}, {0xb7, 0x05}, {0x8f, 0x00}, {0xb8, 0xcb}, {0xb9, 0x9b}, /*CC*/ {0xfe, 0x01}, /*skin white*/ {0xd0, 0x38}, {0xd1, 0x00}, {0xd2, 0x02}, {0xd3, 0x04}, {0xd4, 0x38}, {0xd5, 0x12}, {0xd6, 0x30}, {0xd7, 0x00}, {0xd8, 0x0a}, {0xd9, 0x16}, {0xda, 0x39}, {0xdb, 0xf8}, /*LSC*/ {0xfe, 0x01}, {0xc1, 0x3c}, {0xc2, 0x50}, {0xc3, 0x00}, {0xc4, 0x40}, {0xc5, 0x30}, {0xc6, 0x30}, {0xc7, 0x10}, {0xc8, 0x00}, {0xc9, 0x00}, {0xdc, 0x20}, {0xdd, 0x10}, {0xdf, 0x00}, {0xde, 0x00}, /*Histogram*/ {0x01, 0x10}, {0x0b, 0x31}, {0x0e, 0x50}, {0x0f, 0x0f}, {0x10, 0x6e}, {0x12, 0xa0}, {0x15, 0x60}, {0x16, 0x60}, {0x17, 0xe0}, /*Measure Window*/ {0xcc, 0x0c}, {0xcd, 0x10}, {0xce, 0xa0}, {0xcf, 0xe6}, /*dark sun*/ {0x45, 0xf7}, {0x46, 0xff}, {0x47, 0x15}, {0x48, 0x03}, {0x4f, 0x60}, /*banding*/ {0xfe, 0x00}, {0x05, 0x00}, /*HB*/ {0x06, 0x90}, {0x07, 0x00}, /*VB*/ {0x08, 0x64}, {0xfe, 0x01}, /*anti-flicker step [11:8]*/ {0x25, 0x00}, /*anti-flicker step [7:0]*/ {0x26, 0xb3}, /*exp level 0 */ {0x27, 0x02}, {0x28, 0x19}, /*exp level 1 */ {0x29, 0x02}, {0x2a, 0x19}, /*7.14fps*/ {0x2b, 0x02}, {0x2c, 0x19}, /*exp level 3 */ {0x2d, 0x02}, {0x2e, 0x19}, {0x3c, 0x20}, {0xfe, 0x00}, /*DVP*/ {0xfe, 0x03}, {0x01, 0x00}, {0x02, 0x00}, {0x10, 0x00}, {0x15, 0x00}, {0xfe, 0x00}, {REG_NULL, 0x00}, }; static const struct gc0312_framesize gc0312_framesizes[] = { { /* VGA */ .width = 640, .height = 480, .regs = gc0312_vga_regs, .max_exp_lines = 488, } }; static const struct gc0312_pixfmt gc0312_formats[] = { { .code = MEDIA_BUS_FMT_YUYV8_2X8, } }; static inline struct gc0312 *to_gc0312(struct v4l2_subdev *sd) { return container_of(sd, struct gc0312, sd); } /* sensor register write */ static int gc0312_write(struct i2c_client *client, u8 reg, u8 val) { struct i2c_msg msg; u8 buf[2]; int ret; buf[0] = reg & 0xFF; buf[1] = val; msg.addr = client->addr; msg.flags = client->flags; msg.buf = buf; msg.len = sizeof(buf); ret = i2c_transfer(client->adapter, &msg, 1); if (ret >= 0) return 0; dev_err(&client->dev, "gc0312 write reg(0x%x val:0x%x) failed !\n", reg, val); return ret; } /* sensor register read */ static int gc0312_read(struct i2c_client *client, u8 reg, u8 *val) { struct i2c_msg msg[2]; u8 buf[1]; int ret; buf[0] = reg & 0xFF; msg[0].addr = client->addr; msg[0].flags = client->flags; msg[0].buf = buf; msg[0].len = sizeof(buf); msg[1].addr = client->addr; msg[1].flags = client->flags | I2C_M_RD; msg[1].buf = buf; msg[1].len = 1; ret = i2c_transfer(client->adapter, msg, 2); if (ret >= 0) { *val = buf[0]; return 0; } dev_err(&client->dev, "gc0312 read reg:0x%x failed !\n", reg); return ret; } static int gc0312_write_array(struct i2c_client *client, const struct sensor_register *regs) { int i, ret = 0; i = 0; while (regs[i].addr != REG_NULL) { ret = gc0312_write(client, regs[i].addr, regs[i].value); if (ret) { dev_err(&client->dev, "%s failed !\n", __func__); break; } i++; } return ret; } static void gc0312_get_default_format(struct v4l2_mbus_framefmt *format) { format->width = gc0312_framesizes[0].width; format->height = gc0312_framesizes[0].height; format->colorspace = V4L2_COLORSPACE_SRGB; format->code = gc0312_formats[0].code; format->field = V4L2_FIELD_NONE; } static void gc0312_set_streaming(struct gc0312 *gc0312, int on) { struct i2c_client *client = gc0312->client; int ret; dev_dbg(&client->dev, "%s: on: %d\n", __func__, on); ret = gc0312_write(client, REG_SOFTWARE_STANDBY, on); if (ret) dev_err(&client->dev, "gc0312 soft standby failed\n"); } /* * V4L2 subdev video and pad level operations */ static int gc0312_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { struct i2c_client *client = v4l2_get_subdevdata(sd); dev_dbg(&client->dev, "%s:\n", __func__); if (code->index >= ARRAY_SIZE(gc0312_formats)) return -EINVAL; code->code = gc0312_formats[code->index].code; return 0; } static int gc0312_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { struct i2c_client *client = v4l2_get_subdevdata(sd); int i = ARRAY_SIZE(gc0312_formats); dev_dbg(&client->dev, "%s:\n", __func__); if (fse->index >= ARRAY_SIZE(gc0312_framesizes)) return -EINVAL; while (--i) if (fse->code == gc0312_formats[i].code) break; fse->code = gc0312_formats[i].code; fse->min_width = gc0312_framesizes[fse->index].width; fse->max_width = fse->min_width; fse->max_height = gc0312_framesizes[fse->index].height; fse->min_height = fse->max_height; return 0; } static int gc0312_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct gc0312 *gc0312 = to_gc0312(sd); dev_dbg(&client->dev, "%s enter\n", __func__); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API struct v4l2_mbus_framefmt *mf; mf = v4l2_subdev_get_try_format(sd, cfg, 0); mutex_lock(&gc0312->lock); fmt->format = *mf; mutex_unlock(&gc0312->lock); return 0; #else return -ENOTTY; #endif } mutex_lock(&gc0312->lock); fmt->format = gc0312->format; mutex_unlock(&gc0312->lock); dev_dbg(&client->dev, "%s: %x %dx%d\n", __func__, gc0312->format.code, gc0312->format.width, gc0312->format.height); return 0; } static void __gc0312_try_frame_size(struct v4l2_mbus_framefmt *mf, const struct gc0312_framesize **size) { const struct gc0312_framesize *fsize = &gc0312_framesizes[0]; const struct gc0312_framesize *match = NULL; int i = ARRAY_SIZE(gc0312_framesizes); unsigned int min_err = UINT_MAX; while (i--) { unsigned int err = abs(fsize->width - mf->width) + abs(fsize->height - mf->height); if (err < min_err && fsize->regs[0].addr) { min_err = err; match = fsize; } fsize++; } if (!match) match = &gc0312_framesizes[0]; mf->width = match->width; mf->height = match->height; if (size) *size = match; } static int gc0312_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct i2c_client *client = v4l2_get_subdevdata(sd); int index = ARRAY_SIZE(gc0312_formats); struct v4l2_mbus_framefmt *mf = &fmt->format; const struct gc0312_framesize *size = NULL; struct gc0312 *gc0312 = to_gc0312(sd); int ret = 0; dev_dbg(&client->dev, "%s enter\n", __func__); __gc0312_try_frame_size(mf, &size); while (--index >= 0) if (gc0312_formats[index].code == mf->code) break; if (index < 0) return -EINVAL; mf->colorspace = V4L2_COLORSPACE_SRGB; mf->code = gc0312_formats[index].code; mf->field = V4L2_FIELD_NONE; mutex_lock(&gc0312->lock); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); *mf = fmt->format; #else return -ENOTTY; #endif } else { if (gc0312->streaming) { mutex_unlock(&gc0312->lock); return -EBUSY; } gc0312->frame_size = size; gc0312->format = fmt->format; } mutex_unlock(&gc0312->lock); return ret; } static void gc0312_get_module_inf(struct gc0312 *gc0312, struct rkmodule_inf *inf) { memset(inf, 0, sizeof(*inf)); strlcpy(inf->base.sensor, DRIVER_NAME, sizeof(inf->base.sensor)); strlcpy(inf->base.module, gc0312->module_name, sizeof(inf->base.module)); strlcpy(inf->base.lens, gc0312->len_name, sizeof(inf->base.lens)); } static long gc0312_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct gc0312 *gc0312 = to_gc0312(sd); long ret = 0; switch (cmd) { case RKMODULE_GET_MODULE_INFO: gc0312_get_module_inf(gc0312, (struct rkmodule_inf *)arg); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #ifdef CONFIG_COMPAT static long gc0312_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg) { void __user *up = compat_ptr(arg); struct rkmodule_inf *inf; struct rkmodule_awb_cfg *cfg; long ret; switch (cmd) { case RKMODULE_GET_MODULE_INFO: inf = kzalloc(sizeof(*inf), GFP_KERNEL); if (!inf) { ret = -ENOMEM; return ret; } ret = gc0312_ioctl(sd, cmd, inf); if (!ret) ret = copy_to_user(up, inf, sizeof(*inf)); kfree(inf); break; case RKMODULE_AWB_CFG: cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); if (!cfg) { ret = -ENOMEM; return ret; } ret = copy_from_user(cfg, up, sizeof(*cfg)); if (!ret) ret = gc0312_ioctl(sd, cmd, cfg); kfree(cfg); break; default: ret = -ENOIOCTLCMD; break; } return ret; } #endif static int gc0312_s_stream(struct v4l2_subdev *sd, int on) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct gc0312 *gc0312 = to_gc0312(sd); int ret = 0; dev_dbg(&client->dev, "%s: on: %d\n", __func__, on); mutex_lock(&gc0312->lock); on = !!on; if (gc0312->streaming == on) goto unlock; if (!on) { /* Stop Streaming Sequence */ gc0312_set_streaming(gc0312, 0x00); gc0312->streaming = on; if (!IS_ERR(gc0312->pwdn_gpio)) { gpiod_set_value_cansleep(gc0312->pwdn_gpio, 1); usleep_range(2000, 5000); } goto unlock; } if (!IS_ERR(gc0312->pwdn_gpio)) { gpiod_set_value_cansleep(gc0312->pwdn_gpio, 0); usleep_range(2000, 5000); } ret = gc0312_write_array(client, gc0312->frame_size->regs); if (ret) goto unlock; gc0312_set_streaming(gc0312, 0xFF); gc0312->streaming = on; unlock: mutex_unlock(&gc0312->lock); return ret; } static int gc0312_set_test_pattern(struct gc0312 *gc0312, int value) { return 0; } static int gc0312_s_ctrl(struct v4l2_ctrl *ctrl) { struct gc0312 *gc0312 = container_of(ctrl->handler, struct gc0312, ctrls); switch (ctrl->id) { case V4L2_CID_TEST_PATTERN: return gc0312_set_test_pattern(gc0312, ctrl->val); } return 0; } static const struct v4l2_ctrl_ops gc0312_ctrl_ops = { .s_ctrl = gc0312_s_ctrl, }; static const char * const gc0312_test_pattern_menu[] = { "Disabled", "Vertical Color Bars", }; /* ----------------------------------------------------------------------------- * V4L2 subdev internal operations */ #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static int gc0312_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(sd, fh->pad, 0); dev_dbg(&client->dev, "%s:\n", __func__); gc0312_get_default_format(format); return 0; } #endif static int gc0312_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *config) { config->type = V4L2_MBUS_PARALLEL; config->flags = V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_PCLK_SAMPLE_RISING; return 0; } static const struct v4l2_subdev_core_ops gc0312_subdev_core_ops = { .log_status = v4l2_ctrl_subdev_log_status, .subscribe_event = v4l2_ctrl_subdev_subscribe_event, .unsubscribe_event = v4l2_event_subdev_unsubscribe, .ioctl = gc0312_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl32 = gc0312_compat_ioctl32, #endif }; static const struct v4l2_subdev_video_ops gc0312_subdev_video_ops = { .s_stream = gc0312_s_stream, .g_mbus_config = gc0312_g_mbus_config, }; static const struct v4l2_subdev_pad_ops gc0312_subdev_pad_ops = { .enum_mbus_code = gc0312_enum_mbus_code, .enum_frame_size = gc0312_enum_frame_sizes, .get_fmt = gc0312_get_fmt, .set_fmt = gc0312_set_fmt, }; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API static const struct v4l2_subdev_ops gc0312_subdev_ops = { .core = &gc0312_subdev_core_ops, .video = &gc0312_subdev_video_ops, .pad = &gc0312_subdev_pad_ops, }; static const struct v4l2_subdev_internal_ops gc0312_subdev_internal_ops = { .open = gc0312_open, }; #endif static int gc0312_detect(struct gc0312 *gc0312) { struct i2c_client *client = gc0312->client; u8 pid, ver; int ret; dev_dbg(&client->dev, "%s:\n", __func__); /* Check sensor revision */ ret = gc0312_read(client, REG_SC_CHIP_ID_H, &pid); if (!ret) ret = gc0312_read(client, REG_SC_CHIP_ID_L, &ver); if (!ret) { unsigned short id; id = SENSOR_ID(pid, ver); if (id != GC0312_ID) { ret = -1; dev_err(&client->dev, "Sensor detection failed (%04X, %d)\n", id, ret); } else { dev_info(&client->dev, "Found GC%04X sensor\n", id); if (!IS_ERR(gc0312->pwdn_gpio)) gpiod_set_value_cansleep(gc0312->pwdn_gpio, 1); } } return ret; } static int __gc0312_power_on(struct gc0312 *gc0312) { int ret; struct device *dev = &gc0312->client->dev; if (!IS_ERR(gc0312->xvclk)) { ret = clk_set_rate(gc0312->xvclk, 24000000); if (ret < 0) dev_info(dev, "Failed to set xvclk rate (24MHz)\n"); } if (!IS_ERR(gc0312->pwdn_gpio)) { gpiod_set_value_cansleep(gc0312->pwdn_gpio, 1); usleep_range(2000, 5000); } if (!IS_ERR(gc0312->supplies)) { ret = regulator_bulk_enable(GC0312_NUM_SUPPLIES, gc0312->supplies); if (ret < 0) dev_info(dev, "Failed to enable regulators\n"); usleep_range(2000, 5000); } if (!IS_ERR(gc0312->pwdn_gpio)) { gpiod_set_value_cansleep(gc0312->pwdn_gpio, 0); usleep_range(2000, 5000); } if (!IS_ERR(gc0312->xvclk)) { ret = clk_prepare_enable(gc0312->xvclk); if (ret < 0) dev_info(dev, "Failed to enable xvclk\n"); } usleep_range(7000, 10000); return 0; } static void __gc0312_power_off(struct gc0312 *gc0312) { if (!IS_ERR(gc0312->xvclk)) clk_disable_unprepare(gc0312->xvclk); if (!IS_ERR(gc0312->supplies)) regulator_bulk_disable(GC0312_NUM_SUPPLIES, gc0312->supplies); if (!IS_ERR(gc0312->pwdn_gpio)) gpiod_set_value_cansleep(gc0312->pwdn_gpio, 1); } static int gc0312_configure_regulators(struct gc0312 *gc0312) { unsigned int i; for (i = 0; i < GC0312_NUM_SUPPLIES; i++) gc0312->supplies[i].supply = gc0312_supply_names[i]; return devm_regulator_bulk_get(&gc0312->client->dev, GC0312_NUM_SUPPLIES, gc0312->supplies); } static int gc0312_parse_of(struct gc0312 *gc0312) { struct device *dev = &gc0312->client->dev; int ret; gc0312->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(gc0312->pwdn_gpio)) dev_info(dev, "Failed to get pwdn-gpios, maybe no used\n"); ret = gc0312_configure_regulators(gc0312); if (ret) dev_info(dev, "Failed to get power regulators\n"); return __gc0312_power_on(gc0312); } static int gc0312_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device_node *node = dev->of_node; struct v4l2_subdev *sd; struct gc0312 *gc0312; char facing[2]; int ret; gc0312 = devm_kzalloc(&client->dev, sizeof(*gc0312), GFP_KERNEL); if (!gc0312) return -ENOMEM; ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, &gc0312->module_index); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, &gc0312->module_facing); ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, &gc0312->module_name); ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, &gc0312->len_name); if (ret) { dev_err(dev, "could not get module information!\n"); return -EINVAL; } gc0312->client = client; gc0312->xvclk = devm_clk_get(&client->dev, "xvclk"); if (IS_ERR(gc0312->xvclk)) { dev_err(&client->dev, "Failed to get xvclk\n"); return -EINVAL; } gc0312_parse_of(gc0312); gc0312->xvclk_frequency = clk_get_rate(gc0312->xvclk); if (gc0312->xvclk_frequency < 6000000 || gc0312->xvclk_frequency > 27000000) return -EINVAL; v4l2_ctrl_handler_init(&gc0312->ctrls, 2); gc0312->link_frequency = v4l2_ctrl_new_std(&gc0312->ctrls, &gc0312_ctrl_ops, V4L2_CID_PIXEL_RATE, 0, GC0312_PIXEL_RATE, 1, GC0312_PIXEL_RATE); v4l2_ctrl_new_std_menu_items(&gc0312->ctrls, &gc0312_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(gc0312_test_pattern_menu) - 1, 0, 0, gc0312_test_pattern_menu); gc0312->sd.ctrl_handler = &gc0312->ctrls; if (gc0312->ctrls.error) { dev_err(&client->dev, "%s: control initialization error %d\n", __func__, gc0312->ctrls.error); return gc0312->ctrls.error; } sd = &gc0312->sd; client->flags |= I2C_CLIENT_SCCB; #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API v4l2_i2c_subdev_init(sd, client, &gc0312_subdev_ops); sd->internal_ops = &gc0312_subdev_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; #endif #if defined(CONFIG_MEDIA_CONTROLLER) gc0312->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, 1, &gc0312->pad, 0); if (ret < 0) { v4l2_ctrl_handler_free(&gc0312->ctrls); return ret; } #endif mutex_init(&gc0312->lock); gc0312_get_default_format(&gc0312->format); gc0312->frame_size = &gc0312_framesizes[0]; ret = gc0312_detect(gc0312); if (ret < 0) goto error; memset(facing, 0, sizeof(facing)); if (strcmp(gc0312->module_facing, "back") == 0) facing[0] = 'b'; else facing[0] = 'f'; snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", gc0312->module_index, facing, DRIVER_NAME, dev_name(sd->dev)); ret = v4l2_async_register_subdev_sensor_common(sd); if (ret) goto error; dev_info(&client->dev, "%s sensor driver registered !!\n", sd->name); return 0; error: v4l2_ctrl_handler_free(&gc0312->ctrls); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif mutex_destroy(&gc0312->lock); __gc0312_power_off(gc0312); return ret; } static int gc0312_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct gc0312 *gc0312 = to_gc0312(sd); v4l2_ctrl_handler_free(&gc0312->ctrls); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif mutex_destroy(&gc0312->lock); __gc0312_power_off(gc0312); return 0; } static const struct i2c_device_id gc0312_id[] = { { "gc0312", 0 }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(i2c, gc0312_id); #if IS_ENABLED(CONFIG_OF) static const struct of_device_id gc0312_of_match[] = { { .compatible = "galaxycore,gc0312", }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, gc0312_of_match); #endif static struct i2c_driver gc0312_i2c_driver = { .driver = { .name = DRIVER_NAME, .of_match_table = of_match_ptr(gc0312_of_match), }, .probe = gc0312_probe, .remove = gc0312_remove, .id_table = gc0312_id, }; static int __init sensor_mod_init(void) { return i2c_add_driver(&gc0312_i2c_driver); } static void __exit sensor_mod_exit(void) { i2c_del_driver(&gc0312_i2c_driver); } device_initcall_sync(sensor_mod_init); module_exit(sensor_mod_exit); MODULE_AUTHOR("Benoit Parrot "); MODULE_DESCRIPTION("GC0312 CMOS Image Sensor driver"); MODULE_LICENSE("GPL v2");