/* * Samsung LSI S5C73M3 8M pixel camera driver * * Copyright (C) 2012, Samsung Electronics, Co., Ltd. * Sylwester Nawrocki * Andrzej Hajda * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "s5c73m3.h" int s5c73m3_dbg; module_param_named(debug, s5c73m3_dbg, int, 0644); static int boot_from_rom = 1; module_param(boot_from_rom, int, 0644); static int update_fw; module_param(update_fw, int, 0644); #define S5C73M3_EMBEDDED_DATA_MAXLEN SZ_4K static const char * const s5c73m3_supply_names[S5C73M3_MAX_SUPPLIES] = { "vdd-int", /* Digital Core supply (1.2V), CAM_ISP_CORE_1.2V */ "vdda", /* Analog Core supply (1.2V), CAM_SENSOR_CORE_1.2V */ "vdd-reg", /* Regulator input supply (2.8V), CAM_SENSOR_A2.8V */ "vddio-host", /* Digital Host I/O power supply (1.8V...2.8V), CAM_ISP_SENSOR_1.8V */ "vddio-cis", /* Digital CIS I/O power (1.2V...1.8V), CAM_ISP_MIPI_1.2V */ "vdd-af", /* Lens, CAM_AF_2.8V */ }; static const struct s5c73m3_frame_size s5c73m3_isp_resolutions[] = { { 320, 240, COMM_CHG_MODE_YUV_320_240 }, { 352, 288, COMM_CHG_MODE_YUV_352_288 }, { 640, 480, COMM_CHG_MODE_YUV_640_480 }, { 880, 720, COMM_CHG_MODE_YUV_880_720 }, { 960, 720, COMM_CHG_MODE_YUV_960_720 }, { 1008, 672, COMM_CHG_MODE_YUV_1008_672 }, { 1184, 666, COMM_CHG_MODE_YUV_1184_666 }, { 1280, 720, COMM_CHG_MODE_YUV_1280_720 }, { 1536, 864, COMM_CHG_MODE_YUV_1536_864 }, { 1600, 1200, COMM_CHG_MODE_YUV_1600_1200 }, { 1632, 1224, COMM_CHG_MODE_YUV_1632_1224 }, { 1920, 1080, COMM_CHG_MODE_YUV_1920_1080 }, { 1920, 1440, COMM_CHG_MODE_YUV_1920_1440 }, { 2304, 1296, COMM_CHG_MODE_YUV_2304_1296 }, { 3264, 2448, COMM_CHG_MODE_YUV_3264_2448 }, }; static const struct s5c73m3_frame_size s5c73m3_jpeg_resolutions[] = { { 640, 480, COMM_CHG_MODE_JPEG_640_480 }, { 800, 450, COMM_CHG_MODE_JPEG_800_450 }, { 800, 600, COMM_CHG_MODE_JPEG_800_600 }, { 1024, 768, COMM_CHG_MODE_JPEG_1024_768 }, { 1280, 720, COMM_CHG_MODE_JPEG_1280_720 }, { 1280, 960, COMM_CHG_MODE_JPEG_1280_960 }, { 1600, 900, COMM_CHG_MODE_JPEG_1600_900 }, { 1600, 1200, COMM_CHG_MODE_JPEG_1600_1200 }, { 2048, 1152, COMM_CHG_MODE_JPEG_2048_1152 }, { 2048, 1536, COMM_CHG_MODE_JPEG_2048_1536 }, { 2560, 1440, COMM_CHG_MODE_JPEG_2560_1440 }, { 2560, 1920, COMM_CHG_MODE_JPEG_2560_1920 }, { 3264, 1836, COMM_CHG_MODE_JPEG_3264_1836 }, { 3264, 2176, COMM_CHG_MODE_JPEG_3264_2176 }, { 3264, 2448, COMM_CHG_MODE_JPEG_3264_2448 }, }; static const struct s5c73m3_frame_size * const s5c73m3_resolutions[] = { [RES_ISP] = s5c73m3_isp_resolutions, [RES_JPEG] = s5c73m3_jpeg_resolutions }; static const int s5c73m3_resolutions_len[] = { [RES_ISP] = ARRAY_SIZE(s5c73m3_isp_resolutions), [RES_JPEG] = ARRAY_SIZE(s5c73m3_jpeg_resolutions) }; static const struct s5c73m3_interval s5c73m3_intervals[] = { { COMM_FRAME_RATE_FIXED_7FPS, {142857, 1000000}, {3264, 2448} }, { COMM_FRAME_RATE_FIXED_15FPS, {66667, 1000000}, {3264, 2448} }, { COMM_FRAME_RATE_FIXED_20FPS, {50000, 1000000}, {2304, 1296} }, { COMM_FRAME_RATE_FIXED_30FPS, {33333, 1000000}, {2304, 1296} }, }; #define S5C73M3_DEFAULT_FRAME_INTERVAL 3 /* 30 fps */ static void s5c73m3_fill_mbus_fmt(struct v4l2_mbus_framefmt *mf, const struct s5c73m3_frame_size *fs, u32 code) { mf->width = fs->width; mf->height = fs->height; mf->code = code; mf->colorspace = V4L2_COLORSPACE_JPEG; mf->field = V4L2_FIELD_NONE; } static int s5c73m3_i2c_write(struct i2c_client *client, u16 addr, u16 data) { u8 buf[4] = { addr >> 8, addr & 0xff, data >> 8, data & 0xff }; int ret = i2c_master_send(client, buf, sizeof(buf)); v4l_dbg(4, s5c73m3_dbg, client, "%s: addr 0x%04x, data 0x%04x\n", __func__, addr, data); if (ret == 4) return 0; return ret < 0 ? ret : -EREMOTEIO; } static int s5c73m3_i2c_read(struct i2c_client *client, u16 addr, u16 *data) { int ret; u8 rbuf[2], wbuf[2] = { addr >> 8, addr & 0xff }; struct i2c_msg msg[2] = { { .addr = client->addr, .flags = 0, .len = sizeof(wbuf), .buf = wbuf }, { .addr = client->addr, .flags = I2C_M_RD, .len = sizeof(rbuf), .buf = rbuf } }; /* * Issue repeated START after writing 2 address bytes and * just one STOP only after reading the data bytes. */ ret = i2c_transfer(client->adapter, msg, 2); if (ret == 2) { *data = be16_to_cpup((u16 *)rbuf); v4l2_dbg(4, s5c73m3_dbg, client, "%s: addr: 0x%04x, data: 0x%04x\n", __func__, addr, *data); return 0; } v4l2_err(client, "I2C read failed: addr: %04x, (%d)\n", addr, ret); return ret >= 0 ? -EREMOTEIO : ret; } int s5c73m3_write(struct s5c73m3 *state, u32 addr, u16 data) { struct i2c_client *client = state->i2c_client; int ret; if ((addr ^ state->i2c_write_address) & 0xffff0000) { ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRH, addr >> 16); if (ret < 0) { state->i2c_write_address = 0; return ret; } } if ((addr ^ state->i2c_write_address) & 0xffff) { ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRL, addr & 0xffff); if (ret < 0) { state->i2c_write_address = 0; return ret; } } state->i2c_write_address = addr; ret = s5c73m3_i2c_write(client, REG_CMDBUF_ADDR, data); if (ret < 0) return ret; state->i2c_write_address += 2; return ret; } int s5c73m3_read(struct s5c73m3 *state, u32 addr, u16 *data) { struct i2c_client *client = state->i2c_client; int ret; if ((addr ^ state->i2c_read_address) & 0xffff0000) { ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRH, addr >> 16); if (ret < 0) { state->i2c_read_address = 0; return ret; } } if ((addr ^ state->i2c_read_address) & 0xffff) { ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRL, addr & 0xffff); if (ret < 0) { state->i2c_read_address = 0; return ret; } } state->i2c_read_address = addr; ret = s5c73m3_i2c_read(client, REG_CMDBUF_ADDR, data); if (ret < 0) return ret; state->i2c_read_address += 2; return ret; } static int s5c73m3_check_status(struct s5c73m3 *state, unsigned int value) { unsigned long start = jiffies; unsigned long end = start + msecs_to_jiffies(2000); int ret = 0; u16 status; int count = 0; while (time_is_after_jiffies(end)) { ret = s5c73m3_read(state, REG_STATUS, &status); if (ret < 0 || status == value) break; usleep_range(500, 1000); ++count; } if (count > 0) v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, "status check took %dms\n", jiffies_to_msecs(jiffies - start)); if (ret == 0 && status != value) { u16 i2c_status = 0; u16 i2c_seq_status = 0; s5c73m3_read(state, REG_I2C_STATUS, &i2c_status); s5c73m3_read(state, REG_I2C_SEQ_STATUS, &i2c_seq_status); v4l2_err(&state->sensor_sd, "wrong status %#x, expected: %#x, i2c_status: %#x/%#x\n", status, value, i2c_status, i2c_seq_status); return -ETIMEDOUT; } return ret; } int s5c73m3_isp_command(struct s5c73m3 *state, u16 command, u16 data) { int ret; ret = s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED); if (ret < 0) return ret; ret = s5c73m3_write(state, 0x00095000, command); if (ret < 0) return ret; ret = s5c73m3_write(state, 0x00095002, data); if (ret < 0) return ret; return s5c73m3_write(state, REG_STATUS, 0x0001); } static int s5c73m3_isp_comm_result(struct s5c73m3 *state, u16 command, u16 *data) { return s5c73m3_read(state, COMM_RESULT_OFFSET + command, data); } static int s5c73m3_set_af_softlanding(struct s5c73m3 *state) { unsigned long start = jiffies; u16 af_softlanding; int count = 0; int ret; const char *msg; ret = s5c73m3_isp_command(state, COMM_AF_SOFTLANDING, COMM_AF_SOFTLANDING_ON); if (ret < 0) { v4l2_info(&state->sensor_sd, "AF soft-landing failed\n"); return ret; } for (;;) { ret = s5c73m3_isp_comm_result(state, COMM_AF_SOFTLANDING, &af_softlanding); if (ret < 0) { msg = "failed"; break; } if (af_softlanding == COMM_AF_SOFTLANDING_RES_COMPLETE) { msg = "succeeded"; break; } if (++count > 100) { ret = -ETIME; msg = "timed out"; break; } msleep(25); } v4l2_info(&state->sensor_sd, "AF soft-landing %s after %dms\n", msg, jiffies_to_msecs(jiffies - start)); return ret; } static int s5c73m3_load_fw(struct v4l2_subdev *sd) { struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd); struct i2c_client *client = state->i2c_client; const struct firmware *fw; int ret; char fw_name[20]; snprintf(fw_name, sizeof(fw_name), "SlimISP_%.2s.bin", state->fw_file_version); ret = request_firmware(&fw, fw_name, &client->dev); if (ret < 0) { v4l2_err(sd, "Firmware request failed (%s)\n", fw_name); return -EINVAL; } v4l2_info(sd, "Loading firmware (%s, %zu B)\n", fw_name, fw->size); ret = s5c73m3_spi_write(state, fw->data, fw->size, 64); if (ret >= 0) state->isp_ready = 1; else v4l2_err(sd, "SPI write failed\n"); release_firmware(fw); return ret; } static int s5c73m3_set_frame_size(struct s5c73m3 *state) { const struct s5c73m3_frame_size *prev_size = state->sensor_pix_size[RES_ISP]; const struct s5c73m3_frame_size *cap_size = state->sensor_pix_size[RES_JPEG]; unsigned int chg_mode; v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, "Preview size: %dx%d, reg_val: 0x%x\n", prev_size->width, prev_size->height, prev_size->reg_val); chg_mode = prev_size->reg_val | COMM_CHG_MODE_NEW; if (state->mbus_code == S5C73M3_JPEG_FMT) { v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, "Capture size: %dx%d, reg_val: 0x%x\n", cap_size->width, cap_size->height, cap_size->reg_val); chg_mode |= cap_size->reg_val; } return s5c73m3_isp_command(state, COMM_CHG_MODE, chg_mode); } static int s5c73m3_set_frame_rate(struct s5c73m3 *state) { int ret; if (state->ctrls.stabilization->val) return 0; if (WARN_ON(state->fiv == NULL)) return -EINVAL; ret = s5c73m3_isp_command(state, COMM_FRAME_RATE, state->fiv->fps_reg); if (!ret) state->apply_fiv = 0; return ret; } static int __s5c73m3_s_stream(struct s5c73m3 *state, struct v4l2_subdev *sd, int on) { u16 mode; int ret; if (on && state->apply_fmt) { if (state->mbus_code == S5C73M3_JPEG_FMT) mode = COMM_IMG_OUTPUT_INTERLEAVED; else mode = COMM_IMG_OUTPUT_YUV; ret = s5c73m3_isp_command(state, COMM_IMG_OUTPUT, mode); if (!ret) ret = s5c73m3_set_frame_size(state); if (ret) return ret; state->apply_fmt = 0; } ret = s5c73m3_isp_command(state, COMM_SENSOR_STREAMING, !!on); if (ret) return ret; state->streaming = !!on; if (!on) return ret; if (state->apply_fiv) { ret = s5c73m3_set_frame_rate(state); if (ret < 0) v4l2_err(sd, "Error setting frame rate(%d)\n", ret); } return s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED); } static int s5c73m3_oif_s_stream(struct v4l2_subdev *sd, int on) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); int ret; mutex_lock(&state->lock); ret = __s5c73m3_s_stream(state, sd, on); mutex_unlock(&state->lock); return ret; } static int s5c73m3_system_status_wait(struct s5c73m3 *state, u32 value, unsigned int delay, unsigned int steps) { u16 reg = 0; while (steps-- > 0) { int ret = s5c73m3_read(state, 0x30100010, ®); if (ret < 0) return ret; if (reg == value) return 0; usleep_range(delay, delay + 25); } return -ETIMEDOUT; } static int s5c73m3_read_fw_version(struct s5c73m3 *state) { struct v4l2_subdev *sd = &state->sensor_sd; int i, ret; u16 data[2]; int offset; offset = state->isp_ready ? 0x60 : 0; for (i = 0; i < S5C73M3_SENSOR_FW_LEN / 2; i++) { ret = s5c73m3_read(state, offset + i * 2, data); if (ret < 0) return ret; state->sensor_fw[i * 2] = (char)(*data & 0xff); state->sensor_fw[i * 2 + 1] = (char)(*data >> 8); } state->sensor_fw[S5C73M3_SENSOR_FW_LEN] = '\0'; for (i = 0; i < S5C73M3_SENSOR_TYPE_LEN / 2; i++) { ret = s5c73m3_read(state, offset + 6 + i * 2, data); if (ret < 0) return ret; state->sensor_type[i * 2] = (char)(*data & 0xff); state->sensor_type[i * 2 + 1] = (char)(*data >> 8); } state->sensor_type[S5C73M3_SENSOR_TYPE_LEN] = '\0'; ret = s5c73m3_read(state, offset + 0x14, data); if (ret >= 0) { ret = s5c73m3_read(state, offset + 0x16, data + 1); if (ret >= 0) state->fw_size = data[0] + (data[1] << 16); } v4l2_info(sd, "Sensor type: %s, FW version: %s\n", state->sensor_type, state->sensor_fw); return ret; } static int s5c73m3_fw_update_from(struct s5c73m3 *state) { struct v4l2_subdev *sd = &state->sensor_sd; u16 status = COMM_FW_UPDATE_NOT_READY; int ret; int count = 0; v4l2_warn(sd, "Updating F-ROM firmware.\n"); do { if (status == COMM_FW_UPDATE_NOT_READY) { ret = s5c73m3_isp_command(state, COMM_FW_UPDATE, 0); if (ret < 0) return ret; } ret = s5c73m3_read(state, 0x00095906, &status); if (ret < 0) return ret; switch (status) { case COMM_FW_UPDATE_FAIL: v4l2_warn(sd, "Updating F-ROM firmware failed.\n"); return -EIO; case COMM_FW_UPDATE_SUCCESS: v4l2_warn(sd, "Updating F-ROM firmware finished.\n"); return 0; } ++count; msleep(20); } while (count < 500); v4l2_warn(sd, "Updating F-ROM firmware timed-out.\n"); return -ETIMEDOUT; } static int s5c73m3_spi_boot(struct s5c73m3 *state, bool load_fw) { struct v4l2_subdev *sd = &state->sensor_sd; int ret; /* Run ARM MCU */ ret = s5c73m3_write(state, 0x30000004, 0xffff); if (ret < 0) return ret; usleep_range(400, 500); /* Check booting status */ ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3); if (ret < 0) { v4l2_err(sd, "booting failed: %d\n", ret); return ret; } /* P,M,S and Boot Mode */ ret = s5c73m3_write(state, 0x30100014, 0x2146); if (ret < 0) return ret; ret = s5c73m3_write(state, 0x30100010, 0x210c); if (ret < 0) return ret; usleep_range(200, 250); /* Check SPI status */ ret = s5c73m3_system_status_wait(state, 0x210d, 100, 300); if (ret < 0) v4l2_err(sd, "SPI not ready: %d\n", ret); /* Firmware download over SPI */ if (load_fw) s5c73m3_load_fw(sd); /* MCU reset */ ret = s5c73m3_write(state, 0x30000004, 0xfffd); if (ret < 0) return ret; /* Remap */ ret = s5c73m3_write(state, 0x301000a4, 0x0183); if (ret < 0) return ret; /* MCU restart */ ret = s5c73m3_write(state, 0x30000004, 0xffff); if (ret < 0 || !load_fw) return ret; ret = s5c73m3_read_fw_version(state); if (ret < 0) return ret; if (load_fw && update_fw) { ret = s5c73m3_fw_update_from(state); update_fw = 0; } return ret; } static int s5c73m3_set_timing_register_for_vdd(struct s5c73m3 *state) { static const u32 regs[][2] = { { 0x30100018, 0x0618 }, { 0x3010001c, 0x10c1 }, { 0x30100020, 0x249e } }; int ret; int i; for (i = 0; i < ARRAY_SIZE(regs); i++) { ret = s5c73m3_write(state, regs[i][0], regs[i][1]); if (ret < 0) return ret; } return 0; } static void s5c73m3_set_fw_file_version(struct s5c73m3 *state) { switch (state->sensor_fw[0]) { case 'G': case 'O': state->fw_file_version[0] = 'G'; break; case 'S': case 'Z': state->fw_file_version[0] = 'Z'; break; } switch (state->sensor_fw[1]) { case 'C'...'F': state->fw_file_version[1] = state->sensor_fw[1]; break; } } static int s5c73m3_get_fw_version(struct s5c73m3 *state) { struct v4l2_subdev *sd = &state->sensor_sd; int ret; /* Run ARM MCU */ ret = s5c73m3_write(state, 0x30000004, 0xffff); if (ret < 0) return ret; usleep_range(400, 500); /* Check booting status */ ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3); if (ret < 0) { v4l2_err(sd, "%s: booting failed: %d\n", __func__, ret); return ret; } /* Change I/O Driver Current in order to read from F-ROM */ ret = s5c73m3_write(state, 0x30100120, 0x0820); ret = s5c73m3_write(state, 0x30100124, 0x0820); /* Offset Setting */ ret = s5c73m3_write(state, 0x00010418, 0x0008); /* P,M,S and Boot Mode */ ret = s5c73m3_write(state, 0x30100014, 0x2146); if (ret < 0) return ret; ret = s5c73m3_write(state, 0x30100010, 0x230c); if (ret < 0) return ret; usleep_range(200, 250); /* Check SPI status */ ret = s5c73m3_system_status_wait(state, 0x230e, 100, 300); if (ret < 0) v4l2_err(sd, "SPI not ready: %d\n", ret); /* ARM reset */ ret = s5c73m3_write(state, 0x30000004, 0xfffd); if (ret < 0) return ret; /* Remap */ ret = s5c73m3_write(state, 0x301000a4, 0x0183); if (ret < 0) return ret; s5c73m3_set_timing_register_for_vdd(state); ret = s5c73m3_read_fw_version(state); s5c73m3_set_fw_file_version(state); return ret; } static int s5c73m3_rom_boot(struct s5c73m3 *state, bool load_fw) { static const u32 boot_regs[][2] = { { 0x3100010c, 0x0044 }, { 0x31000108, 0x000d }, { 0x31000304, 0x0001 }, { 0x00010000, 0x5800 }, { 0x00010002, 0x0002 }, { 0x31000000, 0x0001 }, { 0x30100014, 0x1b85 }, { 0x30100010, 0x230c } }; struct v4l2_subdev *sd = &state->sensor_sd; int i, ret; /* Run ARM MCU */ ret = s5c73m3_write(state, 0x30000004, 0xffff); if (ret < 0) return ret; usleep_range(400, 450); /* Check booting status */ ret = s5c73m3_system_status_wait(state, 0x0c, 100, 4); if (ret < 0) { v4l2_err(sd, "Booting failed: %d\n", ret); return ret; } for (i = 0; i < ARRAY_SIZE(boot_regs); i++) { ret = s5c73m3_write(state, boot_regs[i][0], boot_regs[i][1]); if (ret < 0) return ret; } msleep(200); /* Check the binary read status */ ret = s5c73m3_system_status_wait(state, 0x230e, 1000, 150); if (ret < 0) { v4l2_err(sd, "Binary read failed: %d\n", ret); return ret; } /* ARM reset */ ret = s5c73m3_write(state, 0x30000004, 0xfffd); if (ret < 0) return ret; /* Remap */ ret = s5c73m3_write(state, 0x301000a4, 0x0183); if (ret < 0) return ret; /* MCU re-start */ ret = s5c73m3_write(state, 0x30000004, 0xffff); if (ret < 0) return ret; state->isp_ready = 1; return s5c73m3_read_fw_version(state); } static int s5c73m3_isp_init(struct s5c73m3 *state) { int ret; state->i2c_read_address = 0; state->i2c_write_address = 0; ret = s5c73m3_i2c_write(state->i2c_client, AHB_MSB_ADDR_PTR, 0x3310); if (ret < 0) return ret; if (boot_from_rom) return s5c73m3_rom_boot(state, true); else return s5c73m3_spi_boot(state, true); } static const struct s5c73m3_frame_size *s5c73m3_find_frame_size( struct v4l2_mbus_framefmt *fmt, enum s5c73m3_resolution_types idx) { const struct s5c73m3_frame_size *fs; const struct s5c73m3_frame_size *best_fs; int best_dist = INT_MAX; int i; fs = s5c73m3_resolutions[idx]; best_fs = NULL; for (i = 0; i < s5c73m3_resolutions_len[idx]; ++i) { int dist = abs(fs->width - fmt->width) + abs(fs->height - fmt->height); if (dist < best_dist) { best_dist = dist; best_fs = fs; } ++fs; } return best_fs; } static void s5c73m3_oif_try_format(struct s5c73m3 *state, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt, const struct s5c73m3_frame_size **fs) { u32 code; switch (fmt->pad) { case OIF_ISP_PAD: *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP); code = S5C73M3_ISP_FMT; break; case OIF_JPEG_PAD: *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG); code = S5C73M3_JPEG_FMT; break; case OIF_SOURCE_PAD: default: if (fmt->format.code == S5C73M3_JPEG_FMT) code = S5C73M3_JPEG_FMT; else code = S5C73M3_ISP_FMT; if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) *fs = state->oif_pix_size[RES_ISP]; else *fs = s5c73m3_find_frame_size( v4l2_subdev_get_try_format(fh, OIF_ISP_PAD), RES_ISP); break; } s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code); } static void s5c73m3_try_format(struct s5c73m3 *state, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt, const struct s5c73m3_frame_size **fs) { u32 code; if (fmt->pad == S5C73M3_ISP_PAD) { *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP); code = S5C73M3_ISP_FMT; } else { *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG); code = S5C73M3_JPEG_FMT; } s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code); } static int s5c73m3_oif_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); if (fi->pad != OIF_SOURCE_PAD) return -EINVAL; mutex_lock(&state->lock); fi->interval = state->fiv->interval; mutex_unlock(&state->lock); return 0; } static int __s5c73m3_set_frame_interval(struct s5c73m3 *state, struct v4l2_subdev_frame_interval *fi) { const struct s5c73m3_frame_size *prev_size = state->sensor_pix_size[RES_ISP]; const struct s5c73m3_interval *fiv = &s5c73m3_intervals[0]; unsigned int ret, min_err = UINT_MAX; unsigned int i, fr_time; if (fi->interval.denominator == 0) return -EINVAL; fr_time = fi->interval.numerator * 1000 / fi->interval.denominator; for (i = 0; i < ARRAY_SIZE(s5c73m3_intervals); i++) { const struct s5c73m3_interval *iv = &s5c73m3_intervals[i]; if (prev_size->width > iv->size.width || prev_size->height > iv->size.height) continue; ret = abs(iv->interval.numerator / 1000 - fr_time); if (ret < min_err) { fiv = iv; min_err = ret; } } state->fiv = fiv; v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, "Changed frame interval to %u us\n", fiv->interval.numerator); return 0; } static int s5c73m3_oif_s_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); int ret; if (fi->pad != OIF_SOURCE_PAD) return -EINVAL; v4l2_dbg(1, s5c73m3_dbg, sd, "Setting %d/%d frame interval\n", fi->interval.numerator, fi->interval.denominator); mutex_lock(&state->lock); ret = __s5c73m3_set_frame_interval(state, fi); if (!ret) { if (state->streaming) ret = s5c73m3_set_frame_rate(state); else state->apply_fiv = 1; } mutex_unlock(&state->lock); return ret; } static int s5c73m3_oif_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_frame_interval_enum *fie) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); const struct s5c73m3_interval *fi; int ret = 0; if (fie->pad != OIF_SOURCE_PAD) return -EINVAL; if (fie->index >= ARRAY_SIZE(s5c73m3_intervals)) return -EINVAL; mutex_lock(&state->lock); fi = &s5c73m3_intervals[fie->index]; if (fie->width > fi->size.width || fie->height > fi->size.height) ret = -EINVAL; else fie->interval = fi->interval; mutex_unlock(&state->lock); return ret; } static int s5c73m3_oif_get_pad_code(int pad, int index) { if (pad == OIF_SOURCE_PAD) { if (index > 1) return -EINVAL; return (index == 0) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT; } if (index > 0) return -EINVAL; return (pad == OIF_ISP_PAD) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT; } static int s5c73m3_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd); const struct s5c73m3_frame_size *fs; u32 code; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { fmt->format = *v4l2_subdev_get_try_format(fh, fmt->pad); return 0; } mutex_lock(&state->lock); switch (fmt->pad) { case S5C73M3_ISP_PAD: code = S5C73M3_ISP_FMT; fs = state->sensor_pix_size[RES_ISP]; break; case S5C73M3_JPEG_PAD: code = S5C73M3_JPEG_FMT; fs = state->sensor_pix_size[RES_JPEG]; break; default: mutex_unlock(&state->lock); return -EINVAL; } s5c73m3_fill_mbus_fmt(&fmt->format, fs, code); mutex_unlock(&state->lock); return 0; } static int s5c73m3_oif_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); const struct s5c73m3_frame_size *fs; u32 code; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { fmt->format = *v4l2_subdev_get_try_format(fh, fmt->pad); return 0; } mutex_lock(&state->lock); switch (fmt->pad) { case OIF_ISP_PAD: code = S5C73M3_ISP_FMT; fs = state->oif_pix_size[RES_ISP]; break; case OIF_JPEG_PAD: code = S5C73M3_JPEG_FMT; fs = state->oif_pix_size[RES_JPEG]; break; case OIF_SOURCE_PAD: code = state->mbus_code; fs = state->oif_pix_size[RES_ISP]; break; default: mutex_unlock(&state->lock); return -EINVAL; } s5c73m3_fill_mbus_fmt(&fmt->format, fs, code); mutex_unlock(&state->lock); return 0; } static int s5c73m3_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { const struct s5c73m3_frame_size *frame_size = NULL; struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd); struct v4l2_mbus_framefmt *mf; int ret = 0; mutex_lock(&state->lock); s5c73m3_try_format(state, fh, fmt, &frame_size); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { mf = v4l2_subdev_get_try_format(fh, fmt->pad); *mf = fmt->format; } else { switch (fmt->pad) { case S5C73M3_ISP_PAD: state->sensor_pix_size[RES_ISP] = frame_size; break; case S5C73M3_JPEG_PAD: state->sensor_pix_size[RES_JPEG] = frame_size; break; default: ret = -EBUSY; } if (state->streaming) ret = -EBUSY; else state->apply_fmt = 1; } mutex_unlock(&state->lock); return ret; } static int s5c73m3_oif_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { const struct s5c73m3_frame_size *frame_size = NULL; struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); struct v4l2_mbus_framefmt *mf; int ret = 0; mutex_lock(&state->lock); s5c73m3_oif_try_format(state, fh, fmt, &frame_size); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { mf = v4l2_subdev_get_try_format(fh, fmt->pad); *mf = fmt->format; } else { switch (fmt->pad) { case OIF_ISP_PAD: state->oif_pix_size[RES_ISP] = frame_size; break; case OIF_JPEG_PAD: state->oif_pix_size[RES_JPEG] = frame_size; break; case OIF_SOURCE_PAD: state->mbus_code = fmt->format.code; break; default: ret = -EBUSY; } if (state->streaming) ret = -EBUSY; else state->apply_fmt = 1; } mutex_unlock(&state->lock); return ret; } static int s5c73m3_oif_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); int i; if (pad != OIF_SOURCE_PAD || fd == NULL) return -EINVAL; mutex_lock(&state->lock); fd->num_entries = 2; for (i = 0; i < fd->num_entries; i++) fd->entry[i] = state->frame_desc.entry[i]; mutex_unlock(&state->lock); return 0; } static int s5c73m3_oif_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); struct v4l2_mbus_frame_desc *frame_desc = &state->frame_desc; int i; if (pad != OIF_SOURCE_PAD || fd == NULL) return -EINVAL; fd->entry[0].length = 10 * SZ_1M; fd->entry[1].length = max_t(u32, fd->entry[1].length, S5C73M3_EMBEDDED_DATA_MAXLEN); fd->num_entries = 2; mutex_lock(&state->lock); for (i = 0; i < fd->num_entries; i++) frame_desc->entry[i] = fd->entry[i]; mutex_unlock(&state->lock); return 0; } static int s5c73m3_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { static const int codes[] = { [S5C73M3_ISP_PAD] = S5C73M3_ISP_FMT, [S5C73M3_JPEG_PAD] = S5C73M3_JPEG_FMT}; if (code->index > 0 || code->pad >= S5C73M3_NUM_PADS) return -EINVAL; code->code = codes[code->pad]; return 0; } static int s5c73m3_oif_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { int ret; ret = s5c73m3_oif_get_pad_code(code->pad, code->index); if (ret < 0) return ret; code->code = ret; return 0; } static int s5c73m3_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_frame_size_enum *fse) { int idx; if (fse->pad == S5C73M3_ISP_PAD) { if (fse->code != S5C73M3_ISP_FMT) return -EINVAL; idx = RES_ISP; } else{ if (fse->code != S5C73M3_JPEG_FMT) return -EINVAL; idx = RES_JPEG; } if (fse->index >= s5c73m3_resolutions_len[idx]) return -EINVAL; fse->min_width = s5c73m3_resolutions[idx][fse->index].width; fse->max_width = fse->min_width; fse->max_height = s5c73m3_resolutions[idx][fse->index].height; fse->min_height = fse->max_height; return 0; } static int s5c73m3_oif_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_frame_size_enum *fse) { int idx; if (fse->pad == OIF_SOURCE_PAD) { if (fse->index > 0) return -EINVAL; switch (fse->code) { case S5C73M3_JPEG_FMT: case S5C73M3_ISP_FMT: { struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(fh, OIF_ISP_PAD); fse->max_width = fse->min_width = mf->width; fse->max_height = fse->min_height = mf->height; return 0; } default: return -EINVAL; } } if (fse->code != s5c73m3_oif_get_pad_code(fse->pad, 0)) return -EINVAL; if (fse->pad == OIF_JPEG_PAD) idx = RES_JPEG; else idx = RES_ISP; if (fse->index >= s5c73m3_resolutions_len[idx]) return -EINVAL; fse->min_width = s5c73m3_resolutions[idx][fse->index].width; fse->max_width = fse->min_width; fse->max_height = s5c73m3_resolutions[idx][fse->index].height; fse->min_height = fse->max_height; return 0; } static int s5c73m3_oif_log_status(struct v4l2_subdev *sd) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name); v4l2_info(sd, "power: %d, apply_fmt: %d\n", state->power, state->apply_fmt); return 0; } static int s5c73m3_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct v4l2_mbus_framefmt *mf; mf = v4l2_subdev_get_try_format(fh, S5C73M3_ISP_PAD); s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1], S5C73M3_ISP_FMT); mf = v4l2_subdev_get_try_format(fh, S5C73M3_JPEG_PAD); s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1], S5C73M3_JPEG_FMT); return 0; } static int s5c73m3_oif_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct v4l2_mbus_framefmt *mf; mf = v4l2_subdev_get_try_format(fh, OIF_ISP_PAD); s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1], S5C73M3_ISP_FMT); mf = v4l2_subdev_get_try_format(fh, OIF_JPEG_PAD); s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1], S5C73M3_JPEG_FMT); mf = v4l2_subdev_get_try_format(fh, OIF_SOURCE_PAD); s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1], S5C73M3_ISP_FMT); return 0; } static int s5c73m3_gpio_set_value(struct s5c73m3 *priv, int id, u32 val) { if (!gpio_is_valid(priv->gpio[id].gpio)) return 0; gpio_set_value(priv->gpio[id].gpio, !!val); return 1; } static int s5c73m3_gpio_assert(struct s5c73m3 *priv, int id) { return s5c73m3_gpio_set_value(priv, id, priv->gpio[id].level); } static int s5c73m3_gpio_deassert(struct s5c73m3 *priv, int id) { return s5c73m3_gpio_set_value(priv, id, !priv->gpio[id].level); } static int __s5c73m3_power_on(struct s5c73m3 *state) { int i, ret; for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++) { ret = regulator_enable(state->supplies[i].consumer); if (ret) goto err; } s5c73m3_gpio_deassert(state, STBY); usleep_range(100, 200); s5c73m3_gpio_deassert(state, RST); usleep_range(50, 100); return 0; err: for (--i; i >= 0; i--) regulator_disable(state->supplies[i].consumer); return ret; } static int __s5c73m3_power_off(struct s5c73m3 *state) { int i, ret; if (s5c73m3_gpio_assert(state, RST)) usleep_range(10, 50); if (s5c73m3_gpio_assert(state, STBY)) usleep_range(100, 200); state->streaming = 0; state->isp_ready = 0; for (i = S5C73M3_MAX_SUPPLIES - 1; i >= 0; i--) { ret = regulator_disable(state->supplies[i].consumer); if (ret) goto err; } return 0; err: for (++i; i < S5C73M3_MAX_SUPPLIES; i++) { int r = regulator_enable(state->supplies[i].consumer); if (r < 0) v4l2_err(&state->oif_sd, "Failed to reenable %s: %d\n", state->supplies[i].supply, r); } return ret; } static int s5c73m3_oif_set_power(struct v4l2_subdev *sd, int on) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); int ret = 0; mutex_lock(&state->lock); if (on && !state->power) { ret = __s5c73m3_power_on(state); if (!ret) ret = s5c73m3_isp_init(state); if (!ret) { state->apply_fiv = 1; state->apply_fmt = 1; } } else if (!on == state->power) { ret = s5c73m3_set_af_softlanding(state); if (!ret) ret = __s5c73m3_power_off(state); else v4l2_err(sd, "Soft landing lens failed\n"); } if (!ret) state->power += on ? 1 : -1; v4l2_dbg(1, s5c73m3_dbg, sd, "%s: power: %d\n", __func__, state->power); mutex_unlock(&state->lock); return ret; } static int s5c73m3_oif_registered(struct v4l2_subdev *sd) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); int ret; ret = v4l2_device_register_subdev(sd->v4l2_dev, &state->sensor_sd); if (ret) { v4l2_err(sd->v4l2_dev, "Failed to register %s\n", state->oif_sd.name); return ret; } ret = media_entity_create_link(&state->sensor_sd.entity, S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); ret = media_entity_create_link(&state->sensor_sd.entity, S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); mutex_lock(&state->lock); ret = __s5c73m3_power_on(state); if (ret == 0) s5c73m3_get_fw_version(state); __s5c73m3_power_off(state); mutex_unlock(&state->lock); v4l2_dbg(1, s5c73m3_dbg, sd, "%s: Booting %s (%d)\n", __func__, ret ? "failed" : "succeded", ret); return ret; } static void s5c73m3_oif_unregistered(struct v4l2_subdev *sd) { struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); v4l2_device_unregister_subdev(&state->sensor_sd); } static const struct v4l2_subdev_internal_ops s5c73m3_internal_ops = { .open = s5c73m3_open, }; static const struct v4l2_subdev_pad_ops s5c73m3_pad_ops = { .enum_mbus_code = s5c73m3_enum_mbus_code, .enum_frame_size = s5c73m3_enum_frame_size, .get_fmt = s5c73m3_get_fmt, .set_fmt = s5c73m3_set_fmt, }; static const struct v4l2_subdev_ops s5c73m3_subdev_ops = { .pad = &s5c73m3_pad_ops, }; static const struct v4l2_subdev_internal_ops oif_internal_ops = { .registered = s5c73m3_oif_registered, .unregistered = s5c73m3_oif_unregistered, .open = s5c73m3_oif_open, }; static const struct v4l2_subdev_pad_ops s5c73m3_oif_pad_ops = { .enum_mbus_code = s5c73m3_oif_enum_mbus_code, .enum_frame_size = s5c73m3_oif_enum_frame_size, .enum_frame_interval = s5c73m3_oif_enum_frame_interval, .get_fmt = s5c73m3_oif_get_fmt, .set_fmt = s5c73m3_oif_set_fmt, .get_frame_desc = s5c73m3_oif_get_frame_desc, .set_frame_desc = s5c73m3_oif_set_frame_desc, }; static const struct v4l2_subdev_core_ops s5c73m3_oif_core_ops = { .s_power = s5c73m3_oif_set_power, .log_status = s5c73m3_oif_log_status, }; static const struct v4l2_subdev_video_ops s5c73m3_oif_video_ops = { .s_stream = s5c73m3_oif_s_stream, .g_frame_interval = s5c73m3_oif_g_frame_interval, .s_frame_interval = s5c73m3_oif_s_frame_interval, }; static const struct v4l2_subdev_ops oif_subdev_ops = { .core = &s5c73m3_oif_core_ops, .pad = &s5c73m3_oif_pad_ops, .video = &s5c73m3_oif_video_ops, }; static int s5c73m3_configure_gpios(struct s5c73m3 *state, const struct s5c73m3_platform_data *pdata) { struct device *dev = &state->i2c_client->dev; const struct s5c73m3_gpio *gpio; unsigned long flags; int ret; state->gpio[STBY].gpio = -EINVAL; state->gpio[RST].gpio = -EINVAL; gpio = &pdata->gpio_stby; if (gpio_is_valid(gpio->gpio)) { flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW) | GPIOF_EXPORT; ret = devm_gpio_request_one(dev, gpio->gpio, flags, "S5C73M3_STBY"); if (ret < 0) return ret; state->gpio[STBY] = *gpio; } gpio = &pdata->gpio_reset; if (gpio_is_valid(gpio->gpio)) { flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW) | GPIOF_EXPORT; ret = devm_gpio_request_one(dev, gpio->gpio, flags, "S5C73M3_RST"); if (ret < 0) return ret; state->gpio[RST] = *gpio; } return 0; } static int s5c73m3_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; const struct s5c73m3_platform_data *pdata = client->dev.platform_data; struct v4l2_subdev *sd; struct v4l2_subdev *oif_sd; struct s5c73m3 *state; int ret, i; if (pdata == NULL) { dev_err(&client->dev, "Platform data not specified\n"); return -EINVAL; } state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL); if (!state) return -ENOMEM; mutex_init(&state->lock); sd = &state->sensor_sd; oif_sd = &state->oif_sd; v4l2_subdev_init(sd, &s5c73m3_subdev_ops); sd->owner = client->driver->driver.owner; v4l2_set_subdevdata(sd, state); strlcpy(sd->name, "S5C73M3", sizeof(sd->name)); sd->internal_ops = &s5c73m3_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE; state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS, state->sensor_pads, 0); if (ret < 0) return ret; v4l2_i2c_subdev_init(oif_sd, client, &oif_subdev_ops); strcpy(oif_sd->name, "S5C73M3-OIF"); oif_sd->internal_ops = &oif_internal_ops; oif_sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE; oif_sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS, state->oif_pads, 0); if (ret < 0) return ret; state->mclk_frequency = pdata->mclk_frequency; state->bus_type = pdata->bus_type; state->i2c_client = client; ret = s5c73m3_configure_gpios(state, pdata); if (ret) goto out_err; for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++) state->supplies[i].supply = s5c73m3_supply_names[i]; ret = devm_regulator_bulk_get(dev, S5C73M3_MAX_SUPPLIES, state->supplies); if (ret) { dev_err(dev, "failed to get regulators\n"); goto out_err; } ret = s5c73m3_init_controls(state); if (ret) goto out_err; state->sensor_pix_size[RES_ISP] = &s5c73m3_isp_resolutions[1]; state->sensor_pix_size[RES_JPEG] = &s5c73m3_jpeg_resolutions[1]; state->oif_pix_size[RES_ISP] = state->sensor_pix_size[RES_ISP]; state->oif_pix_size[RES_JPEG] = state->sensor_pix_size[RES_JPEG]; state->mbus_code = S5C73M3_ISP_FMT; state->fiv = &s5c73m3_intervals[S5C73M3_DEFAULT_FRAME_INTERVAL]; state->fw_file_version[0] = 'G'; state->fw_file_version[1] = 'C'; ret = s5c73m3_register_spi_driver(state); if (ret < 0) goto out_err; v4l2_info(sd, "%s: completed succesfully\n", __func__); return 0; out_err: media_entity_cleanup(&sd->entity); return ret; } static int s5c73m3_remove(struct i2c_client *client) { struct v4l2_subdev *oif_sd = i2c_get_clientdata(client); struct s5c73m3 *state = oif_sd_to_s5c73m3(oif_sd); struct v4l2_subdev *sensor_sd = &state->sensor_sd; v4l2_device_unregister_subdev(oif_sd); v4l2_ctrl_handler_free(oif_sd->ctrl_handler); media_entity_cleanup(&oif_sd->entity); v4l2_device_unregister_subdev(sensor_sd); media_entity_cleanup(&sensor_sd->entity); s5c73m3_unregister_spi_driver(state); return 0; } static const struct i2c_device_id s5c73m3_id[] = { { DRIVER_NAME, 0 }, { } }; MODULE_DEVICE_TABLE(i2c, s5c73m3_id); static struct i2c_driver s5c73m3_i2c_driver = { .driver = { .name = DRIVER_NAME, }, .probe = s5c73m3_probe, .remove = s5c73m3_remove, .id_table = s5c73m3_id, }; module_i2c_driver(s5c73m3_i2c_driver); MODULE_DESCRIPTION("Samsung S5C73M3 camera driver"); MODULE_AUTHOR("Sylwester Nawrocki "); MODULE_LICENSE("GPL");