/* * Driver for M5MOLS 8M Pixel camera sensor with ISP * * Copyright (C) 2011 Samsung Electronics Co., Ltd. * Author: HeungJun Kim * * Copyright (C) 2009 Samsung Electronics Co., Ltd. * Author: Dongsoo Nathaniel Kim * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "m5mols.h" #include "m5mols_reg.h" int m5mols_debug; module_param(m5mols_debug, int, 0644); #define MOD_NAME "M5MOLS" #define M5MOLS_I2C_CHECK_RETRY 50 #define DEBUG #define DEFAULT_SENSOR_WIDTH 800 #define DEFAULT_SENSOR_HEIGHT 480 #define m5_err \ do { printk("%s : %d : ret : %d\n", __func__, __LINE__, ret);\ } while(0) /* M5MOLS mode */ static u8 m5mols_reg_mode[] = { [MODE_SYSINIT] = 0x00, [MODE_PARMSET] = 0x01, [MODE_MONITOR] = 0x02, [MODE_CAPTURE] = 0x03, [MODE_UNKNOWN] = 0xff, }; /* M5MOLS status */ static u8 m5mols_reg_status[] = { [STATUS_SYSINIT] = 0x00, [STATUS_PARMSET] = 0x01, [STATUS_MONITOR] = 0x02, [STATUS_AUTO_FOCUS] = 0x03, [STATUS_FACE_DETECTION] = 0x04, [STATUS_DUAL_CAPTURE] = 0x05, [STATUS_SINGLE_CAPTURE] = 0x06, [STATUS_PREVIEW] = 0x07, [STATUS_UNKNOWN] = 0xff, }; /* M5MOLS regulator consumer names */ /* The DEFAULT names of power are referenced with M5MO datasheet. */ static struct regulator_bulk_data supplies[] = { { /* core power - 1.2v, generally at the M5MOLS */ .supply = "core", }, { .supply = "dig_18", /* digital power 1 - 1.8v */ }, { .supply = "d_sensor", /* sensor power 1 - 1.8v */ }, { .supply = "dig_28", /* digital power 2 - 2.8v */ }, { .supply = "a_sensor", /* analog power */ }, { .supply = "dig_12", /* digital power 3 - 1.2v */ }, }; /* M5MOLS default format (codes, sizes, preset values) */ static struct v4l2_mbus_framefmt default_fmt[M5MOLS_RES_MAX] = { [M5MOLS_RES_MON] = { .width = DEFAULT_SENSOR_WIDTH, .height = DEFAULT_SENSOR_HEIGHT, .code = V4L2_MBUS_FMT_YUYV8_2X8, .field = V4L2_FIELD_NONE, .colorspace = V4L2_COLORSPACE_JPEG, }, [M5MOLS_RES_CAPTURE] = { .width = 1920, .height = 1080, .code = V4L2_MBUS_FMT_JPEG_1X8, .field = V4L2_FIELD_NONE, .colorspace = V4L2_COLORSPACE_JPEG, }, }; #define SIZE_DEFAULT_FFMT ARRAY_SIZE(default_fmt) static const struct m5mols_format m5mols_formats[] = { [M5MOLS_RES_MON] = { .code = V4L2_MBUS_FMT_YUYV8_2X8, .colorspace = V4L2_COLORSPACE_JPEG, }, [M5MOLS_RES_CAPTURE] = { .code = V4L2_MBUS_FMT_JPEG_1X8, .colorspace = V4L2_COLORSPACE_JPEG, }, }; static const struct m5mols_resolution m5mols_resolutions[] = { /* monitor size */ { 0x01, M5MOLS_RES_MON, 128, 96 }, /* SUB-QCIF */ { 0x03, M5MOLS_RES_MON, 160, 120 }, /* QQVGA */ { 0x05, M5MOLS_RES_MON, 176, 144 }, /* QCIF */ { 0x06, M5MOLS_RES_MON, 176, 176 }, /* 176*176 */ { 0x08, M5MOLS_RES_MON, 240, 320 }, /* 1 QVGA */ { 0x09, M5MOLS_RES_MON, 320, 240 }, /* QVGA */ { 0x0c, M5MOLS_RES_MON, 240, 400 }, /* l WQVGA */ { 0x0d, M5MOLS_RES_MON, 400, 240 }, /* WQVGA */ { 0x0e, M5MOLS_RES_MON, 352, 288 }, /* CIF */ { 0x13, M5MOLS_RES_MON, 480, 360 }, /* 480*360 */ { 0x15, M5MOLS_RES_MON, 640, 360 }, /* qHD */ { 0x17, M5MOLS_RES_MON, 640, 480 }, /* VGA */ { 0x18, M5MOLS_RES_MON, 720, 480 }, /* 720x480 */ { 0x1a, M5MOLS_RES_MON, 800, 480 }, /* WVGA */ { 0x1f, M5MOLS_RES_MON, 800, 600 }, /* SVGA */ { 0x21, M5MOLS_RES_MON, 1280, 720 }, /* HD */ { 0x25, M5MOLS_RES_MON, 1920, 1080 }, /* 1080p */ { 0x29, M5MOLS_RES_MON, 3264, 2448 }, /* 8M (2.63fps@3264*2448) */ { 0x30, M5MOLS_RES_MON, 320, 240 }, /* 60fps for slow motion */ { 0x31, M5MOLS_RES_MON, 320, 240 }, /* 120fps for slow motion */ { 0x39, M5MOLS_RES_MON, 800, 602 }, /* AHS_MON debug */ /* capture(JPEG or Bayer RAW or YUV Raw) size */ { 0x02, M5MOLS_RES_CAPTURE, 320, 240 }, /* QVGA */ { 0x04, M5MOLS_RES_CAPTURE, 400, 240 }, /* WQVGA */ { 0x07, M5MOLS_RES_CAPTURE, 480, 360 }, /* 480 x 360 */ { 0x08, M5MOLS_RES_CAPTURE, 640, 360 }, /* qHD */ { 0x09, M5MOLS_RES_CAPTURE, 640, 480 }, /* VGA */ { 0x0a, M5MOLS_RES_CAPTURE, 800, 480 }, /* WVGA */ { 0x10, M5MOLS_RES_CAPTURE, 1280, 720 }, /* HD */ { 0x14, M5MOLS_RES_CAPTURE, 1280, 960 }, /* 1M */ { 0x17, M5MOLS_RES_CAPTURE, 1600, 1200 }, /* 2M */ { 0x19, M5MOLS_RES_CAPTURE, 1920, 1080 }, /* Full-HD */ { 0x1a, M5MOLS_RES_CAPTURE, 2048, 1152 }, /* 3M */ { 0x1b, M5MOLS_RES_CAPTURE, 2048, 1536 }, /* 3M */ { 0x1c, M5MOLS_RES_CAPTURE, 2560, 1440 }, /* 4M */ { 0x1d, M5MOLS_RES_CAPTURE, 2560, 1536 }, /* 4M */ { 0x1f, M5MOLS_RES_CAPTURE, 2560, 1920 }, /* 5M */ { 0x21, M5MOLS_RES_CAPTURE, 3264, 1836 }, /* 6M */ { 0x22, M5MOLS_RES_CAPTURE, 3264, 1960 }, /* 6M */ { 0x25, M5MOLS_RES_CAPTURE, 3264, 2448 }, /* 8M */ #ifdef M5MO_THUMB_SUPPORT /* capture thumb(JPEG) size */ { 0x00, M5MOLS_RES_THUMB, 160, 90 }, /* 160 x 90 */ { 0x02, M5MOLS_RES_THUMB, 160, 120 }, /* QQVGA */ { 0x04, M5MOLS_RES_THUMB, 320, 240 }, /* QVGA */ { 0x06, M5MOLS_RES_THUMB, 400, 240 }, /* WQVGA */ { 0x09, M5MOLS_RES_THUMB, 480, 360 }, /* 480 x 360 */ { 0x0a, M5MOLS_RES_THUMB, 640, 360 }, /* qHD */ { 0x0b, M5MOLS_RES_THUMB, 640, 480 }, /* VGA */ { 0x0c, M5MOLS_RES_THUMB, 800, 480 }, /* WVGA */ #endif }; /* M5MOLS default FPS */ static const struct v4l2_fract default_fps = { .numerator = 1, .denominator = M5MOLS_FPS_AUTO, }; static u8 m5mols_reg_fps[] = { [M5MOLS_FPS_AUTO] = 0x01, [M5MOLS_FPS_10] = 0x05, [M5MOLS_FPS_12] = 0x04, [M5MOLS_FPS_15] = 0x03, [M5MOLS_FPS_20] = 0x08, [M5MOLS_FPS_21] = 0x09, [M5MOLS_FPS_22] = 0x0a, [M5MOLS_FPS_23] = 0x0b, [M5MOLS_FPS_24] = 0x07, [M5MOLS_FPS_30] = 0x02, }; static u32 m5mols_swap_byte(u8 *data, enum m5mols_i2c_size size) { if (size == I2C_8BIT) return *data; else if (size == I2C_16BIT) return be16_to_cpu(*((u16 *)data)); else return be32_to_cpu(*((u32 *)data)); } /* * m5mols_read_reg/m5mols_write_reg - handle sensor's I2C communications. * * The I2C command packet of M5MOLS is made up 3 kinds of I2C bytes(category, * command, bytes). Reference m5mols.h. * * The packet is needed 2, when M5MOLS is read through I2C. * The packet is needed 1, when M5MOLS is written through I2C. * * I2C packet common order(including both reading/writing) * 1st : size (data size + 4) * 2nd : READ/WRITE (R - 0x01, W - 0x02) * 3rd : Category * 4th : Command * * I2C packet order for READING operation * 5th : data real size for reading * And, read another I2C packet again, until data size. * * I2C packet order for WRITING operation * 5th to 8th: an actual data to write */ #define M5MOLS_BYTE_READ 0x01 #define M5MOLS_BYTE_WRITE 0x02 int m5mols_read_reg(struct v4l2_subdev *sd, enum m5mols_i2c_size size, u8 category, u8 cmd, u32 *val) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct i2c_msg msg[2]; u8 wbuf[5], rbuf[I2C_MAX + 1]; int ret; if (!client->adapter) return -ENODEV; if (size != I2C_8BIT && size != I2C_16BIT && size != I2C_32BIT) return -EINVAL; /* 1st I2C operation for writing category & command. */ msg[0].addr = client->addr; msg[0].flags = 0; msg[0].len = 5; /* 1(cmd size per bytes) + 4 */ msg[0].buf = wbuf; wbuf[0] = 5; /* same right above this */ wbuf[1] = M5MOLS_BYTE_READ; wbuf[2] = category; wbuf[3] = cmd; wbuf[4] = size; /* 2nd I2C operation for reading data. */ msg[1].addr = client->addr; msg[1].flags = I2C_M_RD; msg[1].len = size + 1; msg[1].buf = rbuf; ret = i2c_transfer(client->adapter, msg, 2); if (ret < 0) { m5_err; dev_err(&client->dev, "failed READ[%d] at " "cat[%02x] cmd[%02x]\n", size, category, cmd); return ret; } *val = m5mols_swap_byte(&rbuf[1], size); usleep_range(15000, 20000); /* must be for stabilization */ return 0; } int m5mols_write_reg(struct v4l2_subdev *sd, enum m5mols_i2c_size size, u8 category, u8 cmd, u32 val) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct device *cdev = &client->dev; struct i2c_msg msg[1]; u8 wbuf[I2C_MAX + 4]; u32 *buf = (u32 *)&wbuf[4]; int ret; if (!client->adapter) return -ENODEV; if (size != I2C_8BIT && size != I2C_16BIT && size != I2C_32BIT) { dev_err(cdev, "Wrong data size\n"); return -EINVAL; } msg->addr = client->addr; msg->flags = 0; msg->len = size + 4; msg->buf = wbuf; wbuf[0] = size + 4; wbuf[1] = M5MOLS_BYTE_WRITE; wbuf[2] = category; wbuf[3] = cmd; *buf = m5mols_swap_byte((u8 *)&val, size); ret = i2c_transfer(client->adapter, msg, 1); if (ret < 0) { m5_err; dev_err(&client->dev, "failed WRITE[%d] at " "cat[%02x] cmd[%02x], ret %d\n", size, msg->buf[2], msg->buf[3], ret); return ret; } usleep_range(15000, 20000); /* must be for stabilization */ return 0; } int m5mols_check_busy(struct v4l2_subdev *sd, u8 category, u8 cmd, u32 value) { u32 busy, i; int ret; for (i = 0; i < M5MOLS_I2C_CHECK_RETRY; i++) { ret = m5mols_read_reg(sd, I2C_8BIT, category, cmd, &busy); if (ret < 0) return ret; if (busy == value) /* bingo */ return 0; /* must be for stabilization */ usleep_range(10000, 10000); } return -EBUSY; } /* * m5mols_set_mode - change and set mode of M5MOLS. * * This driver supports now only 3 modes(System, Monitor, Parameter). */ int m5mols_set_mode(struct v4l2_subdev *sd, enum m5mols_mode mode) { struct m5mols_info *info = to_m5mols(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); struct device *cdev = &client->dev; const char *m5mols_str_mode[] = { "System initialization", "Parameter setting", "Monitor setting", "Capture setting", "Unknown", }; int ret = 0; if (mode < MODE_SYSINIT || mode > MODE_UNKNOWN) return -EINVAL; ret = i2c_w8_system(sd, CAT0_SYSMODE, m5mols_reg_mode[mode]); if (!ret) { /* bug detect, capture status is not 0x3 but 0x6 */ if (mode == MODE_CAPTURE) mode = STATUS_SINGLE_CAPTURE; ret = m5mols_check_busy(sd, CAT_SYSTEM, CAT0_STATUS, m5mols_reg_status[mode]); if (ret) m5_err; } if (ret < 0) return ret; info->mode = m5mols_reg_mode[mode]; dev_dbg(cdev, " mode: %s\n", m5mols_str_mode[mode]); return ret; } /* * m5mols_get_status - get status of M5MOLS. */ enum m5mols_status m5mols_get_status(struct v4l2_subdev *sd) { struct m5mols_info *info = to_m5mols(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); struct device *cdev = &client->dev; const char *m5mols_str_status[] = { "System initialization", "Parameter setting", "Monitor setting", "Auto Focus", "Face Detection", "Multi/Dual Capture", "Single Capture", "Preview (Data transfer)", /* It means recording, not preview. */ "Unknown", }; u32 reg; int ret = 0; ret = i2c_r8_system(sd, CAT0_STATUS, ®); if (ret) return ret; if (reg < STATUS_SYSINIT || reg >= STATUS_UNKNOWN) return -EINVAL; info->status = m5mols_reg_status[reg]; dev_dbg(cdev, " status: %s\n", m5mols_str_status[reg]); return ret; } /* * get_version - get M5MOLS sensor versions. */ static int get_version(struct v4l2_subdev *sd) { struct m5mols_info *info = to_m5mols(sd); union { struct m5mols_version ver; u8 bytes[10]; } value; int ret, i; for (i = CAT0_CUSTOMER_CODE; i <= CAT0_VERSION_AWB_L; i++) { ret = i2c_r8_system(sd, i, (u32 *)&value.bytes[i]); if (ret) return ret; } info->ver = value.ver; info->ver.fw = be16_to_cpu(info->ver.fw); info->ver.hw = be16_to_cpu(info->ver.hw); info->ver.parm = be16_to_cpu(info->ver.parm); info->ver.awb = be16_to_cpu(info->ver.awb); return ret; } static void m5mols_show_version(struct v4l2_subdev *sd) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct device *dev = &client->dev; struct m5mols_info *info = to_m5mols(sd); dev_info(dev, "customer code\t0x%02x\n", info->ver.ctm_code); dev_info(dev, "project code\t0x%02x\n", info->ver.pj_code); dev_info(dev, "firmware version\t0x%04x\n", info->ver.fw); dev_info(dev, "hardware version\t0x%04x\n", info->ver.hw); dev_info(dev, "parameter version\t0x%04x\n", info->ver.parm); dev_info(dev, "AWB version\t0x%04x\n", info->ver.awb); } /* * get_res_preset - find out M5MOLS register value from requested resolution. * * @width: requested width * @height: requested height * @type: requested type of each modes. It supports only monitor mode now. */ static int get_res_preset(struct v4l2_subdev *sd, u16 width, u16 height, enum m5mols_res_type type) { struct m5mols_info *info = to_m5mols(sd); int i; for (i = 0; i < ARRAY_SIZE(m5mols_resolutions); i++) { if ((m5mols_resolutions[i].type == type) && (m5mols_resolutions[i].width == width) && (m5mols_resolutions[i].height == height)) break; } if (i >= ARRAY_SIZE(m5mols_resolutions)) { v4l2msg("no matching resolution\n"); return -EINVAL; } return m5mols_resolutions[i].value; } /* * get_fps - calc & check FPS from v4l2_captureparm, if FPS is adequate, set. * * In M5MOLS case, the denominator means FPS. The each value of numerator and * denominator should not be minus. If numerator is 0, it sets AUTO FPS. If * numerator is not 1, it recalculates denominator. After it checks, the * denominator is set to timeperframe.denominator, and used by FPS. */ static int get_fps(struct v4l2_subdev *sd, struct v4l2_captureparm *parm) { int numerator = parm->timeperframe.numerator; int denominator = parm->timeperframe.denominator; /* The denominator should be +, except 0. The numerator shoud be +. */ if (numerator < 0 || denominator <= 0) return -EINVAL; /* The numerator is 0, return auto fps. */ if (numerator == 0) { parm->timeperframe.denominator = M5MOLS_FPS_AUTO; return 0; } /* calc FPS(not time per frame) per 1 numerator */ denominator = denominator / numerator; if (denominator < M5MOLS_FPS_AUTO || denominator > M5MOLS_FPS_MAX) return -EINVAL; if (!m5mols_reg_fps[denominator]) return -EINVAL; return 0; } /* * to_code - return pixelcode of M5MOLS according to resolution type. */ static enum v4l2_mbus_pixelcode to_code(enum m5mols_res_type res_type) { return m5mols_formats[res_type].code; } /* * to_res_type - return resolution type of M5MOLS according to pixelcode. */ static enum m5mols_res_type to_res_type(struct v4l2_subdev *sd, enum v4l2_mbus_pixelcode code) { int i = ARRAY_SIZE(m5mols_formats); while (i--) if (code == m5mols_formats[i].code) break; if (i < 0) return M5MOLS_RES_MAX; if (code == m5mols_formats[M5MOLS_RES_MON].code) return M5MOLS_RES_MON; else return M5MOLS_RES_CAPTURE; } static int m5mols_g_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *ffmt) { struct m5mols_info *info = to_m5mols(sd); enum m5mols_res_type res_type; res_type = to_res_type(sd, ffmt->code); if (res_type == M5MOLS_RES_MAX) return -EINVAL; *ffmt = info->fmt[res_type]; info->code = ffmt->code; return 0; } static int m5mols_into_monitor(struct v4l2_subdev *sd, int res_size) { int ret; ret = m5mols_set_mode(sd, MODE_PARMSET); if (!ret) ret = i2c_w8_param(sd, CAT1_MONITOR_SIZE, (u8)res_size); if (!ret) ret = m5mols_set_mode(sd, MODE_PARMSET); return ret; } static int m5mols_into_capture(struct v4l2_subdev *sd, int res_size) { struct m5mols_info *info = to_m5mols(sd); u32 reg; int ret, timeout = 1; u32 temp = 0; info->captured = false; /* * The sequence of preparing Capture mode. * 1. Clear Interrupt bit (for dummy) * 2. Enable Capture bit at Interrupt * 3. Lock AE/AWB * 4. Enter Still Capture mode */ ret = m5mols_set_mode(sd, MODE_MONITOR); if (!ret) /* FIXME: setting capture exposure at the middle of a amount. */ ret = i2c_w16_ae(sd, CAT3_MANUAL_GAIN_CAP, 0x90); if (!ret) ret = m5mols_set_ae_lock(info, true); if (!ret) ret = m5mols_set_awb_lock(info, true); if (!ret) ret = i2c_r8_system(sd, CAT0_INT_FACTOR, ®); if (!ret) ret = i2c_w8_system(sd, CAT0_INT_ENABLE, 1 << INT_BIT_CAPTURE); if (!ret) ret = m5mols_set_mode(sd, MODE_CAPTURE); if (!ret) timeout = wait_event_interruptible_timeout(info->cap_wait, info->captured, msecs_to_jiffies(2000)); /* disable all interrupt & clear interrupt */ ret = i2c_w8_system(sd, CAT0_INT_ENABLE, 0x0); if (!ret) ret = i2c_r8_system(sd, CAT0_INT_FACTOR, ®); if (ret) return -EPERM; /* If all timeout exhausted, return error. */ if (!timeout) return -ETIMEDOUT; ret = i2c_r32_capt_ctrl(sd, CATC_CAP_IMAGE_SIZE, &temp); info->captured = false; return ret; } static int m5mols_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *ffmt) { struct m5mols_info *info = to_m5mols(sd); enum m5mols_res_type res_type; int size; int ret = -EINVAL; res_type = to_res_type(sd, ffmt->code); if (res_type == M5MOLS_RES_MAX) return -EINVAL; /* If user set portrait for preview, it is substitued width width height * unless get_res_preset will fail that M5MOLS did not support * reverse WVGA */ if (ffmt->width < ffmt->height) { int temp; temp = ffmt->width; ffmt->width = ffmt->height; ffmt->height = temp; } size = get_res_preset(sd, ffmt->width, ffmt->height, res_type); if (size < 0) return -EINVAL; if (ffmt->code == m5mols_formats[M5MOLS_RES_MON].code) ret = m5mols_into_monitor(sd, size); else ret = m5mols_into_capture(sd, 0); info->fmt[res_type] = default_fmt[res_type]; info->fmt[res_type].width = ffmt->width; info->fmt[res_type].height = ffmt->height; *ffmt = info->fmt[res_type]; info->code = ffmt->code; return ret; } static int m5mols_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index, enum v4l2_mbus_pixelcode *code) { if (!code || index >= ARRAY_SIZE(m5mols_formats)) return -EINVAL; *code = m5mols_formats[index].code; return 0; } static int m5mols_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms) { struct m5mols_info *info = to_m5mols(sd); struct v4l2_captureparm *cp = &parms->parm.capture; if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; cp->capability = V4L2_CAP_TIMEPERFRAME; cp->timeperframe = info->tpf; return 0; } static int m5mols_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms) { struct m5mols_info *info = to_m5mols(sd); struct v4l2_captureparm *cp = &parms->parm.capture; int ret = -EINVAL; if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; ret = m5mols_set_mode_backup(sd, MODE_PARMSET); if (!ret) ret = get_fps(sd, cp); /* set right FPS to denominator. */ if (!ret) ret = i2c_w8_param(sd, CAT1_MONITOR_FPS, m5mols_reg_fps[cp->timeperframe.denominator]); if (!ret) ret = m5mols_set_mode_restore(sd); if (!ret) { cp->capability = V4L2_CAP_TIMEPERFRAME; info->tpf = cp->timeperframe; } v4l2msg("denominator: %d / numerator: %d.\n", cp->timeperframe.denominator, cp->timeperframe.numerator); return ret; } static int m5mols_get_info_capture(struct v4l2_subdev *sd) { struct m5mols_info *info = to_m5mols(sd); struct m5mols_exif *exif = &info->cap.exif; int denominator, numerator; int ret = 0; ret = i2c_r32_exif(sd, CAT7_INFO_EXPTIME_NU, &numerator); if (!ret) ret = i2c_r32_exif(sd, CAT7_INFO_EXPTIME_DE, &denominator); if (!ret) exif->exposure_time = (u32)(numerator / denominator); if (ret) return ret; ret = i2c_r32_exif(sd, CAT7_INFO_TV_NU, &numerator); if (!ret) ret = i2c_r32_exif(sd, CAT7_INFO_TV_DE, &denominator); if (!ret) exif->shutter_speed = (u32)(numerator / denominator); if (ret) return ret; ret = i2c_r32_exif(sd, CAT7_INFO_AV_NU, &numerator); if (!ret) ret = i2c_r32_exif(sd, CAT7_INFO_AV_DE, &denominator); if (!ret) exif->aperture = (u32)(numerator / denominator); if (ret) return ret; ret = i2c_r32_exif(sd, CAT7_INFO_BV_NU, &numerator); if (!ret) ret = i2c_r32_exif(sd, CAT7_INFO_BV_DE, &denominator); if (!ret) exif->brightness = (u32)(numerator / denominator); if (ret) return ret; ret = i2c_r32_exif(sd, CAT7_INFO_EBV_NU, &numerator); if (!ret) ret = i2c_r32_exif(sd, CAT7_INFO_EBV_DE, &denominator); if (!ret) exif->exposure_bias = (u32)(numerator / denominator); if (ret) return ret; ret = i2c_r16_exif(sd, CAT7_INFO_ISO, (u32 *)&exif->iso_speed); if (!ret) ret = i2c_r16_exif(sd, CAT7_INFO_FLASH, (u32 *)&exif->flash); if (!ret) ret = i2c_r16_exif(sd, CAT7_INFO_SDR, (u32 *)&exif->sdr); if (!ret) ret = i2c_r16_exif(sd, CAT7_INFO_QVAL, (u32 *)&exif->qval); if (ret) return ret; if (!ret) ret = i2c_r32_capt_ctrl(sd, CATC_CAP_IMAGE_SIZE, &info->cap.main); if (!ret) ret = i2c_r32_capt_ctrl(sd, CATC_CAP_THUMB_SIZE, &info->cap.thumb); info->cap.total = info->cap.main + info->cap.thumb; v4l2_info(sd, "%s: capture total size %d\n", __func__, info->cap.total); v4l2_info(sd, "%s: capture main size %d\n", __func__, info->cap.main); v4l2_info(sd, "%s: capture thumb size %d\n", __func__, info->cap.thumb); v4l2_info(sd, "%s: exposure_time %d\n", __func__, exif->exposure_time); v4l2_info(sd, "%s: shutter_speed %d\n", __func__, exif->shutter_speed); v4l2_info(sd, "%s: aperture %d\n", __func__, exif->aperture); v4l2_info(sd, "%s: brightness %d\n", __func__, exif->brightness); v4l2_info(sd, "%s: exposure_bias %d\n", __func__, exif->exposure_bias); v4l2_info(sd, "%s: iso_speed %d\n", __func__, exif->iso_speed); v4l2_info(sd, "%s: flash %d\n", __func__, exif->flash); v4l2_info(sd, "%s: sdr %d\n", __func__, exif->sdr); v4l2_info(sd, "%s: qval %d\n", __func__, exif->qval); return ret; } /* TODO: not verified. */ static int m5mols_start_capture(struct v4l2_subdev *sd) { struct m5mols_info *info = to_m5mols(sd); u32 reg, size; int ret, timeout; u8 reg_capt_fmt[] = { 0x10, /* JPEG with header + Thumbnail JPEG(YUV422@QVGA) */ }; /* YUV422, JPEG(422), JPEG(420) */ info->captured = false; size = get_res_preset(sd, info->fmt[M5MOLS_RES_CAPTURE].width, info->fmt[M5MOLS_RES_CAPTURE].height, M5MOLS_RES_CAPTURE); if (size < 0) return -EINVAL; ret = 0; /* * The sequence of Starting Capture mode. * 1. Select capture Single or Multi * 2. Select format (YUV422, JPEG(YUV420, YUV422)) * 3. Set image size preset of Capture * 4. Read Interrupt bit (for dummy) * 5. Enable Capture bit at Interrupt * 6. Start Capture * 7. Check interrupt and register value * 8. Get Image & Thumb size */ ret = i2c_w8_capt_ctrl(sd, CATC_CAP_SEL_FRAME, true); /* single capture */ if (!ret) ret = i2c_w8_capt_parm(sd, CATB_YUVOUT_MAIN, reg_capt_fmt[0]); if (!ret) ret = i2c_w8_capt_parm(sd, CATB_MAIN_IMAGE_SIZE, size); if (!ret) ret = i2c_r8_system(sd, CAT0_INT_FACTOR, ®); if (!ret) ret = i2c_w8_system(sd, CAT0_INT_ENABLE, 1 << INT_BIT_CAPTURE); if (!ret) ret = i2c_w8_capt_ctrl(sd, CATC_CAP_START, true); if (!ret) { timeout = wait_event_interruptible_timeout(info->cap_wait, info->captured, msecs_to_jiffies(2000)); if (info->captured) { ret = m5mols_get_info_capture(sd); if (!ret) v4l2_subdev_notify(sd, info->cap.total, NULL); else return ret; } /* disable all interrupt & clear interrupt */ ret = i2c_w8_system(sd, CAT0_INT_ENABLE, 0x0); if (!ret) ret = i2c_r8_system(sd, CAT0_INT_FACTOR, ®); if (ret) return -EPERM; /* If all timeout exhausted, return error. */ if (!timeout) return -ETIMEDOUT; info->captured = false; ret = 0; } /* TODO: complete capture. */ return ret; } static int m5mols_start_monitor(struct v4l2_subdev *sd) { return m5mols_set_mode(sd, MODE_MONITOR); } static int m5mols_s_stream(struct v4l2_subdev *sd, int enable) { struct m5mols_info *info = to_m5mols(sd); if (enable) { if (info->code == to_code(M5MOLS_RES_MON)) { v4l2_info(sd, "%s : monitor mode\n", __func__); return m5mols_start_monitor(sd); } if (info->code == to_code(M5MOLS_RES_CAPTURE)) { v4l2_info(sd, "%s : capture mode\n", __func__); return m5mols_start_capture(sd); } return -EINVAL; } else { if (is_streaming(sd)) return m5mols_set_mode(sd, MODE_PARMSET); return -EINVAL; } } static const struct v4l2_subdev_video_ops m5mols_video_ops = { .g_mbus_fmt = m5mols_g_mbus_fmt, .s_mbus_fmt = m5mols_s_mbus_fmt, .enum_mbus_fmt = m5mols_enum_mbus_fmt, .g_parm = m5mols_g_parm, .s_parm = m5mols_s_parm, .s_stream = m5mols_s_stream, }; static int m5mols_s_ctrl(struct v4l2_ctrl *ctrl) { struct v4l2_subdev *sd = to_sd(ctrl); int ret; ret = m5mols_set_mode_backup(sd, MODE_PARMSET); if (!ret) ret = m5mols_set_ctrl(ctrl); if (!ret) ret = m5mols_set_mode_restore(sd); return ret; } static int m5mols_g_volatile_ctrl(struct v4l2_ctrl *ctrl) { struct v4l2_subdev *sd = to_sd(ctrl); struct m5mols_info *info = to_m5mols(sd); int ret = 0; switch (ctrl->id) { case V4L2_CID_CAM_JPEG_ENCODEDSIZE: ctrl->cur.val = info->cap.total; break; default: ret = -EINVAL; break; } return ret; } static const struct v4l2_ctrl_ops m5mols_ctrl_ops = { .s_ctrl = m5mols_s_ctrl, .g_volatile_ctrl = m5mols_g_volatile_ctrl, }; static const struct v4l2_ctrl_config ctrl_private[] = { { .ops = &m5mols_ctrl_ops, .id = V4L2_CID_CAM_JPEG_MEMSIZE, .name = "Jpeg memory size", .type = V4L2_CTRL_TYPE_INTEGER, .flags = V4L2_CTRL_FLAG_SLIDER, .max = M5MO_JPEG_MEMSIZE, .step = 1, .min = 0, .def = M5MO_JPEG_MEMSIZE, .is_private = 1, }, { .ops = &m5mols_ctrl_ops, .id = V4L2_CID_CAM_JPEG_ENCODEDSIZE, .name = "Jpeg encoded size", .type = V4L2_CTRL_TYPE_INTEGER, .flags = V4L2_CTRL_FLAG_SLIDER, .max = M5MO_JPEG_MEMSIZE, .step = 1, .min = 0, .def = 0, .is_private = 1, .is_volatile = 1, }, }; /* * m5mols_sensor_power - handle sensor power up/down. * * @enable: If it is true, power up. If is not, power down. */ static int m5mols_sensor_power(struct m5mols_info *info, bool enable) { struct v4l2_subdev *sd = &info->sd; struct i2c_client *c = v4l2_get_subdevdata(sd); int ret; if (enable) { if (is_powerup(sd)) return 0; /* power-on additional power */ if (info->set_power) { ret = info->set_power(&c->dev, 1); if (ret) return ret; } ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies); if (ret) return ret; gpio_set_value(info->pdata->gpio_rst, info->pdata->enable_rst); usleep_range(1000, 1000); info->power = true; } else { if (!is_powerup(sd)) return 0; ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies); if (ret) return ret; /* power-off additional power */ if (info->set_power) { ret = info->set_power(&c->dev, 0); if (ret) return ret; } info->power = false; gpio_set_value(info->pdata->gpio_rst, !info->pdata->enable_rst); usleep_range(1000, 1000); } return ret; } static void m5mols_irq_work(struct work_struct *work) { struct m5mols_info *info = container_of(work, struct m5mols_info, work); struct v4l2_subdev *sd = &info->sd; u32 reg; int ret; if (is_powerup(sd)) { ret = i2c_r8_system(sd, CAT0_INT_FACTOR, ®); if (!ret) { switch (reg & 0x0f) { case (1 << INT_BIT_AF): /* Except returning zero at just that upper * statments, not entering in this parenthesis. * The return value is below: * 0x0 : AF Fail * 0x2 : AF Success * 0x4 : Idle Status * 0x5 : Busy Status */ ret = i2c_r8_lens(sd, CATA_AF_STATUS, ®); if (!ret && (reg == 0x02)) info->is_focus = true; else info->is_focus = false; printk("%s = AF %02x, focus %d\n", __func__, reg, info->is_focus); break; case (1 << INT_BIT_CAPTURE): printk("%s = CAPTURE\n", __func__); if (!info->captured) { wake_up_interruptible(&info->cap_wait); info->captured = true; } break; case (1 << INT_BIT_ZOOM): case (1 << INT_BIT_FRAME_SYNC): case (1 << INT_BIT_FD): case (1 << INT_BIT_LENS_INIT): case (1 << INT_BIT_SOUND): printk("%s = Nothing : 0x%08x\n", __func__, reg); break; case (1 << INT_BIT_MODE): default: break; } } } } static irqreturn_t m5mols_irq_handler(int irq, void *data) { struct v4l2_subdev *sd = data; struct m5mols_info *info = to_m5mols(sd); v4l2_info(sd, "%s\n", __func__); schedule_work(&info->work); return IRQ_HANDLED; } /* * m5mols_sensor_armboot - booting M5MOLS internal ARM core-controller. * * It makes to ready M5MOLS for I2C & MIPI interface. After it's powered up, * it activates if it gets armboot command for I2C interface. After getting * cmd, it must wait about least 500ms referenced by M5MOLS datasheet. */ static int m5mols_sensor_armboot(struct v4l2_subdev *sd) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct m5mols_info *info = to_m5mols(sd); static u8 m5mols_mipi_value = 0x02; u32 reg; int ret; /* 1. ARM booting */ ret = i2c_w8_flash(sd, CATC_CAM_START, true); if (ret < 0) return ret; msleep(500); dev_dbg(&client->dev, "Success ARM Booting\n"); /* after ARM booting, the M5MOLS state changed Parameter mode. */ info->mode = MODE_PARMSET; ret = i2c_r8_system(sd, CAT0_INT_FACTOR, ®); /* clear intterupt */ if (!ret) ret = i2c_w8_system(sd, CAT0_INT_ENABLE, 0x0); /* all disable */ if (!ret) ret = get_version(sd); if (!ret) ret = i2c_w8_param(sd, CAT1_DATA_INTERFACE, m5mols_mipi_value); m5mols_show_version(sd); return ret; } /* * m5mols_init_controls - initialization using v4l2_ctrl. */ static int m5mols_init_controls(struct m5mols_info *info) { struct v4l2_subdev *sd = &info->sd; struct i2c_client *client = v4l2_get_subdevdata(sd); u16 max_ex_mon; int ret; /* check minimum & maximum of M5MOLS controls */ ret = i2c_r16_ae(sd, CAT3_MAX_GAIN_MON, (u32 *)&max_ex_mon); if (ret) return ret; /* set the controls using v4l2 control frameworks */ v4l2_ctrl_handler_init(&info->handle, 9); info->colorfx = v4l2_ctrl_new_std_menu(&info->handle, &m5mols_ctrl_ops, V4L2_CID_COLORFX, 9, 1, V4L2_COLORFX_NONE); info->autoexposure = v4l2_ctrl_new_std_menu(&info->handle, &m5mols_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_AUTO); info->exposure = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_EXPOSURE, 0, max_ex_mon, 1, (int)max_ex_mon/2); info->autofocus = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_FOCUS_AUTO, 0, 1, 1, 0); info->autowb = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); info->saturation = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_SATURATION, 0, 6, 1, 3); info->zoom = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_ZOOM_ABSOLUTE, 0, 70, 1, 0); info->jpeg_size = v4l2_ctrl_new_custom(&info->handle, &ctrl_private[0], NULL); info->encoded_size = v4l2_ctrl_new_custom(&info->handle, &ctrl_private[1], NULL); sd->ctrl_handler = &info->handle; if (info->handle.error) { dev_err(&client->dev, "Failed to init controls, %d\n", ret); v4l2_ctrl_handler_free(&info->handle); return info->handle.error; } v4l2_ctrl_cluster(2, &info->autoexposure); /* If above ctrl value is not good image, so it is better that not set */ v4l2_ctrl_handler_setup(&info->handle); return 0; } /* * m5mols_setup_default - set default size & fps in the monitor mode. */ static int m5mols_setup_default(struct v4l2_subdev *sd) { struct m5mols_info *info = to_m5mols(sd); int value; int ret = -EINVAL; value = get_res_preset(sd, default_fmt[M5MOLS_RES_MON].width, default_fmt[M5MOLS_RES_MON].height, M5MOLS_RES_MON); if (value >= 0) ret = i2c_w8_param(sd, CAT1_MONITOR_SIZE, (u8)value); if (!ret) ret = i2c_w8_param(sd, CAT1_MONITOR_FPS, m5mols_reg_fps[default_fps.denominator]); if (!ret) ret = m5mols_init_controls(info); if (!ret) ret = m5mols_set_ae_lock(info, false); if (!ret) ret = m5mols_set_awb_lock(info, false); if (!ret) { info->fmt[M5MOLS_RES_MON] = default_fmt[M5MOLS_RES_MON]; info->tpf = default_fps; ret = 0; } return ret; } static int m5mols_s_power(struct v4l2_subdev *sd, int on) { struct m5mols_info *info = to_m5mols(sd); int ret; if (on) { ret = m5mols_sensor_power(info, true); if (!ret) ret = m5mols_sensor_armboot(sd); if (!ret) ret = m5mols_setup_default(sd); } else { ret = m5mols_sensor_power(info, false); } return ret; } static int m5mols_log_status(struct v4l2_subdev *sd) { struct m5mols_info *info = to_m5mols(sd); v4l2_ctrl_handler_log_status(&info->handle, sd->name); return 0; } static const struct v4l2_subdev_core_ops m5mols_core_ops = { .s_power = m5mols_s_power, .g_ctrl = v4l2_subdev_g_ctrl, .s_ctrl = v4l2_subdev_s_ctrl, .queryctrl = v4l2_subdev_queryctrl, .querymenu = v4l2_subdev_querymenu, .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, .log_status = m5mols_log_status, }; /** * __find_restype - Lookup M-5MOLS resolution type according to pixel code * @code: pixel code */ static enum m5mols_restype __find_restype(enum v4l2_mbus_pixelcode code) { enum m5mols_restype type = M5MOLS_RESTYPE_MONITOR; do { if (code == default_fmt[type].code) return type; } while (type++ != SIZE_DEFAULT_FFMT); return 0; } /** * __find_resolution - Lookup preset and type of M-5MOLS's resolution * @mf: pixel format to find/negotiate the resolution preset for * @type: M-5MOLS resolution type * @resolution: M-5MOLS resolution preset register value * * Find nearest resolution matching resolution preset and adjust mf * to supported values. */ static int __find_resolution(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf, enum m5mols_restype *type, u32 *resolution) { const struct m5mols_resolution *fsize = &m5mols_resolutions[0]; const struct m5mols_resolution *match = NULL; enum m5mols_restype stype = __find_restype(mf->code); int i = ARRAY_SIZE(m5mols_resolutions); unsigned int min_err = ~0; while (i--) { int err; if (stype == fsize->type) { err = abs(fsize->width - mf->width) + abs(fsize->height - mf->height); if (err < min_err) { min_err = err; match = fsize; } } fsize++; } if (match) { mf->width = match->width; mf->height = match->height; *resolution = match->value; *type = stype; return 0; } return -EINVAL; } static struct v4l2_mbus_framefmt *__find_format(struct m5mols_info *info, struct v4l2_subdev_fh *fh, enum v4l2_subdev_format_whence which, enum m5mols_restype type) { if (which == V4L2_SUBDEV_FORMAT_TRY) return fh ? v4l2_subdev_get_try_format(fh, 0) : NULL; return &info->fmt[type]; } static int m5mols_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct m5mols_info *info = to_m5mols(sd); struct v4l2_mbus_framefmt *format; if (fmt->pad != 0) return -EINVAL; format = __find_format(info, fh, fmt->which, info->res_type); if (!format) return -EINVAL; fmt->format = *format; return 0; } static int m5mols_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct m5mols_info *info = to_m5mols(sd); struct v4l2_mbus_framefmt *format = &fmt->format; struct v4l2_mbus_framefmt *sfmt; enum m5mols_restype type; u32 resolution = 0; int ret; if (fmt->pad != 0) return -EINVAL; ret = __find_resolution(sd, format, &type, &resolution); if (ret < 0) return ret; sfmt = __find_format(info, fh, fmt->which, type); if (!sfmt) return 0; sfmt = &default_fmt[type]; sfmt->width = format->width; sfmt->height = format->height; if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { info->resolution = resolution; info->code = format->code; info->res_type = type; } return 0; } static int m5mols_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { if (!code || code->index >= SIZE_DEFAULT_FFMT) return -EINVAL; code->code = default_fmt[code->index].code; return 0; } static struct v4l2_subdev_pad_ops m5mols_pad_ops = { .enum_mbus_code = m5mols_enum_mbus_code, .get_fmt = m5mols_get_fmt, .set_fmt = m5mols_set_fmt, }; static const struct v4l2_subdev_ops m5mols_ops = { .core = &m5mols_core_ops, .pad = &m5mols_pad_ops, .video = &m5mols_video_ops, }; static int m5mols_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags) { printk("%s\n", __func__); return 0; } static const struct media_entity_operations m5mols_media_ops = { .link_setup = m5mols_link_setup, }; static int m5mols_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct v4l2_subdev_format format; memset(&format, 0, sizeof(format)); format.pad = 0; format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; format.format.code = m5mols_formats[M5MOLS_RES_MON].code; format.format.width = DEFAULT_SENSOR_WIDTH; format.format.height = DEFAULT_SENSOR_HEIGHT; m5mols_set_fmt(sd, fh, &format); return 0; } static int m5mols_subdev_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { v4l2_dbg(1, m5mols_debug, sd, "%s", __func__); return 0; } static int m5mols_subdev_registered(struct v4l2_subdev *sd) { v4l2_dbg(1, m5mols_debug, sd, "%s", __func__); return 0; } static void m5mols_subdev_unregistered(struct v4l2_subdev *sd) { v4l2_dbg(1, m5mols_debug, sd, "%s", __func__); } static const struct v4l2_subdev_internal_ops m5mols_v4l2_internal_ops = { .open = m5mols_init_formats, .close = m5mols_subdev_close, .registered = m5mols_subdev_registered, .unregistered = m5mols_subdev_unregistered, }; static int m5mols_probe(struct i2c_client *client, const struct i2c_device_id *id) { const struct m5mols_platform_data *pdata = client->dev.platform_data; struct m5mols_info *info; struct v4l2_subdev *sd; int ret = 0; if (pdata == NULL) { dev_err(&client->dev, "No platform data\n"); return -EINVAL; } if (!gpio_is_valid(pdata->gpio_rst)) { dev_err(&client->dev, "No valid nRST gpio pin.\n"); return -EINVAL; } if (!pdata->irq) { dev_err(&client->dev, "Interrupt not assigned.\n"); return -EINVAL; } info = kzalloc(sizeof(struct m5mols_info), GFP_KERNEL); if (info == NULL) { dev_err(&client->dev, "Failed to allocate info\n"); return -ENOMEM; } info->pdata = pdata; if (info->pdata->set_power) /* for additional power if needed. */ info->set_power = pdata->set_power; if (info->pdata->irq) { INIT_WORK(&info->work, m5mols_irq_work); ret = request_irq(info->pdata->irq, m5mols_irq_handler, IRQF_TRIGGER_RISING, MOD_NAME, &info->sd); if (ret) { dev_err(&client->dev, "Failed to request irq: %d\n", ret); return ret; } } ret = gpio_request(info->pdata->gpio_rst, "M5MOLS nRST"); if (ret) { dev_err(&client->dev, "Failed to set gpio, %d\n", ret); goto out_gpio; } gpio_direction_output(info->pdata->gpio_rst, !info->pdata->enable_rst); ret = regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies), supplies); if (ret) { dev_err(&client->dev, "Failed to get regulators, %d\n", ret); goto out_reg; } sd = &info->sd; strlcpy(sd->name, MOD_NAME, sizeof(sd->name)); init_waitqueue_head(&info->cap_wait); v4l2_i2c_subdev_init(sd, client, &m5mols_ops); info->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&sd->entity, 1, &info->pad, 0); if (ret < 0) goto out_reg; m5mols_init_formats(sd, NULL); sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE; sd->internal_ops = &m5mols_v4l2_internal_ops; sd->entity.ops = &m5mols_media_ops; info->res_type = M5MOLS_RESTYPE_MONITOR; v4l2_info(sd, "%s : m5mols driver probed success\n", __func__); return 0; out_reg: regulator_bulk_free(ARRAY_SIZE(supplies), supplies); out_gpio: gpio_free(info->pdata->gpio_rst); kfree(info); return ret; } static int m5mols_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct m5mols_info *info = to_m5mols(sd); v4l2_device_unregister_subdev(sd); v4l2_ctrl_handler_free(&info->handle); free_irq(info->pdata->irq, sd); regulator_bulk_free(ARRAY_SIZE(supplies), supplies); gpio_free(info->pdata->gpio_rst); media_entity_cleanup(&sd->entity); kfree(info); return 0; } static const struct i2c_device_id m5mols_id[] = { { MOD_NAME, 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, m5mols_id); static struct i2c_driver m5mols_i2c_driver = { .driver = { .name = MOD_NAME, }, .probe = m5mols_probe, .remove = m5mols_remove, .id_table = m5mols_id, }; static int __init m5mols_mod_init(void) { return i2c_add_driver(&m5mols_i2c_driver); } static void __exit m5mols_mod_exit(void) { i2c_del_driver(&m5mols_i2c_driver); } module_init(m5mols_mod_init); module_exit(m5mols_mod_exit); MODULE_AUTHOR("HeungJun Kim "); MODULE_AUTHOR("Dongsoo Kim "); MODULE_DESCRIPTION("Fujitsu M5MOLS 8M Pixel camera sensor with ISP driver"); MODULE_LICENSE("GPL");