/* * Driver for M-5MOLS 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 "m5mols.h" #include "m5mols_reg.h" int m5mols_debug; module_param(m5mols_debug, int, 0644); #define MODULE_NAME "M5MOLS" #define M5MOLS_I2C_CHECK_RETRY 500 /* The regulator consumer names for external voltage regulators */ static struct regulator_bulk_data supplies[] = { { .supply = "core", /* ARM core power, 1.2V */ }, { .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 */ }, }; static struct v4l2_mbus_framefmt m5mols_default_ffmt[M5MOLS_RESTYPE_MAX] = { [M5MOLS_RESTYPE_MONITOR] = { .width = 1920, .height = 1080, .code = V4L2_MBUS_FMT_VYUY8_2X8, .field = V4L2_FIELD_NONE, .colorspace = V4L2_COLORSPACE_JPEG, }, [M5MOLS_RESTYPE_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(m5mols_default_ffmt) static const struct m5mols_resolution m5mols_reg_res[] = { { 0x01, M5MOLS_RESTYPE_MONITOR, 128, 96 }, /* SUB-QCIF */ { 0x03, M5MOLS_RESTYPE_MONITOR, 160, 120 }, /* QQVGA */ { 0x05, M5MOLS_RESTYPE_MONITOR, 176, 144 }, /* QCIF */ { 0x06, M5MOLS_RESTYPE_MONITOR, 176, 176 }, { 0x08, M5MOLS_RESTYPE_MONITOR, 240, 320 }, /* QVGA */ { 0x09, M5MOLS_RESTYPE_MONITOR, 320, 240 }, /* QVGA */ { 0x0c, M5MOLS_RESTYPE_MONITOR, 240, 400 }, /* WQVGA */ { 0x0d, M5MOLS_RESTYPE_MONITOR, 400, 240 }, /* WQVGA */ { 0x0e, M5MOLS_RESTYPE_MONITOR, 352, 288 }, /* CIF */ { 0x13, M5MOLS_RESTYPE_MONITOR, 480, 360 }, { 0x15, M5MOLS_RESTYPE_MONITOR, 640, 360 }, /* qHD */ { 0x17, M5MOLS_RESTYPE_MONITOR, 640, 480 }, /* VGA */ { 0x18, M5MOLS_RESTYPE_MONITOR, 720, 480 }, { 0x1a, M5MOLS_RESTYPE_MONITOR, 800, 480 }, /* WVGA */ { 0x1f, M5MOLS_RESTYPE_MONITOR, 800, 600 }, /* SVGA */ { 0x21, M5MOLS_RESTYPE_MONITOR, 1280, 720 }, /* HD */ { 0x25, M5MOLS_RESTYPE_MONITOR, 1920, 1080 }, /* 1080p */ { 0x29, M5MOLS_RESTYPE_MONITOR, 3264, 2448 }, /* 2.63fps 8M */ { 0x39, M5MOLS_RESTYPE_MONITOR, 800, 602 }, /* AHS_MON debug */ { 0x02, M5MOLS_RESTYPE_CAPTURE, 320, 240 }, /* QVGA */ { 0x04, M5MOLS_RESTYPE_CAPTURE, 400, 240 }, /* WQVGA */ { 0x07, M5MOLS_RESTYPE_CAPTURE, 480, 360 }, { 0x08, M5MOLS_RESTYPE_CAPTURE, 640, 360 }, /* qHD */ { 0x09, M5MOLS_RESTYPE_CAPTURE, 640, 480 }, /* VGA */ { 0x0a, M5MOLS_RESTYPE_CAPTURE, 800, 480 }, /* WVGA */ { 0x10, M5MOLS_RESTYPE_CAPTURE, 1280, 720 }, /* HD */ { 0x14, M5MOLS_RESTYPE_CAPTURE, 1280, 960 }, /* 1M */ { 0x17, M5MOLS_RESTYPE_CAPTURE, 1600, 1200 }, /* 2M */ { 0x19, M5MOLS_RESTYPE_CAPTURE, 1920, 1080 }, /* Full-HD */ { 0x1a, M5MOLS_RESTYPE_CAPTURE, 2048, 1152 }, /* 3Mega */ { 0x1b, M5MOLS_RESTYPE_CAPTURE, 2048, 1536 }, { 0x1c, M5MOLS_RESTYPE_CAPTURE, 2560, 1440 }, /* 4Mega */ { 0x1d, M5MOLS_RESTYPE_CAPTURE, 2560, 1536 }, { 0x1f, M5MOLS_RESTYPE_CAPTURE, 2560, 1920 }, /* 5Mega */ { 0x21, M5MOLS_RESTYPE_CAPTURE, 3264, 1836 }, /* 6Mega */ { 0x22, M5MOLS_RESTYPE_CAPTURE, 3264, 1960 }, { 0x25, M5MOLS_RESTYPE_CAPTURE, 3264, 2448 }, /* 8Mega */ }; /** * m5mols_swap_byte - an byte array to integer conversion function * @size: size in bytes of I2C packet defined in the M-5MOLS datasheet * * Convert I2C data byte array with performing any required byte * reordering to assure proper values for each data type, regardless * of the architecture endianness. */ static u32 m5mols_swap_byte(u8 *data, u8 length) { if (length == 1) return *data; else if (length == 2) return be16_to_cpu(*((u16 *)data)); else return be32_to_cpu(*((u32 *)data)); } /** * m5mols_read - I2C read function * @reg: combination of size, category and command for the I2C packet * @size: desired size of I2C packet * @val: read value */ static int m5mols_read(struct v4l2_subdev *sd, u32 size, u32 reg, u32 *val) { struct i2c_client *client = v4l2_get_subdevdata(sd); u8 rbuf[M5MOLS_I2C_MAX_SIZE + 1]; u8 category = I2C_CATEGORY(reg); u8 cmd = I2C_COMMAND(reg); struct i2c_msg msg[2]; u8 wbuf[5]; int ret; if (!client->adapter) return -ENODEV; msg[0].addr = client->addr; msg[0].flags = 0; msg[0].len = 5; msg[0].buf = wbuf; wbuf[0] = 5; wbuf[1] = M5MOLS_BYTE_READ; wbuf[2] = category; wbuf[3] = cmd; wbuf[4] = size; msg[1].addr = client->addr; msg[1].flags = I2C_M_RD; msg[1].len = size + 1; msg[1].buf = rbuf; /* minimum stabilization time */ usleep_range(200, 200); ret = i2c_transfer(client->adapter, msg, 2); if (ret < 0) { v4l2_err(sd, "read failed: size:%d cat:%02x cmd:%02x. %d\n", size, category, cmd, ret); return ret; } *val = m5mols_swap_byte(&rbuf[1], size); return 0; } int m5mols_read_u8(struct v4l2_subdev *sd, u32 reg, u8 *val) { u32 val_32; int ret; if (I2C_SIZE(reg) != 1) { v4l2_err(sd, "Wrong data size\n"); return -EINVAL; } ret = m5mols_read(sd, I2C_SIZE(reg), reg, &val_32); if (ret) return ret; *val = (u8)val_32; return ret; } int m5mols_read_u16(struct v4l2_subdev *sd, u32 reg, u16 *val) { u32 val_32; int ret; if (I2C_SIZE(reg) != 2) { v4l2_err(sd, "Wrong data size\n"); return -EINVAL; } ret = m5mols_read(sd, I2C_SIZE(reg), reg, &val_32); if (ret) return ret; *val = (u16)val_32; return ret; } int m5mols_read_u32(struct v4l2_subdev *sd, u32 reg, u32 *val) { if (I2C_SIZE(reg) != 4) { v4l2_err(sd, "Wrong data size\n"); return -EINVAL; } return m5mols_read(sd, I2C_SIZE(reg), reg, val); } /** * m5mols_write - I2C command write function * @reg: combination of size, category and command for the I2C packet * @val: value to write */ int m5mols_write(struct v4l2_subdev *sd, u32 reg, u32 val) { struct i2c_client *client = v4l2_get_subdevdata(sd); u8 wbuf[M5MOLS_I2C_MAX_SIZE + 4]; u8 category = I2C_CATEGORY(reg); u8 cmd = I2C_COMMAND(reg); u8 size = I2C_SIZE(reg); u32 *buf = (u32 *)&wbuf[4]; struct i2c_msg msg[1]; int ret; if (!client->adapter) return -ENODEV; if (size != 1 && size != 2 && size != 4) { v4l2_err(sd, "Wrong data size\n"); return -EINVAL; } msg->addr = client->addr; msg->flags = 0; msg->len = (u16)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); usleep_range(200, 200); ret = i2c_transfer(client->adapter, msg, 1); if (ret < 0) { v4l2_err(sd, "write failed: size:%d cat:%02x cmd:%02x. %d\n", size, category, cmd, ret); return ret; } return 0; } int m5mols_busy(struct v4l2_subdev *sd, u8 category, u8 cmd, u8 mask) { u8 busy; int i; int ret; for (i = 0; i < M5MOLS_I2C_CHECK_RETRY; i++) { ret = m5mols_read_u8(sd, I2C_REG(category, cmd, 1), &busy); if (ret < 0) return ret; if ((busy & mask) == mask) return 0; } return -EBUSY; } /** * m5mols_enable_interrupt - Clear interrupt pending bits and unmask interrupts * * Before writing desired interrupt value the INT_FACTOR register should * be read to clear pending interrupts. */ int m5mols_enable_interrupt(struct v4l2_subdev *sd, u8 reg) { struct m5mols_info *info = to_m5mols(sd); u8 mask = is_available_af(info) ? REG_INT_AF : 0; u8 dummy; int ret; ret = m5mols_read_u8(sd, SYSTEM_INT_FACTOR, &dummy); if (!ret) ret = m5mols_write(sd, SYSTEM_INT_ENABLE, reg & ~mask); return ret; } /** * m5mols_reg_mode - Write the mode and check busy status * * It always accompanies a little delay changing the M-5MOLS mode, so it is * needed checking current busy status to guarantee right mode. */ static int m5mols_reg_mode(struct v4l2_subdev *sd, u8 mode) { int ret = m5mols_write(sd, SYSTEM_SYSMODE, mode); return ret ? ret : m5mols_busy(sd, CAT_SYSTEM, CAT0_SYSMODE, mode); } /** * m5mols_mode - manage the M-5MOLS's mode * @mode: the required operation mode * * The commands of M-5MOLS are grouped into specific modes. Each functionality * can be guaranteed only when the sensor is operating in mode which which * a command belongs to. */ int m5mols_mode(struct m5mols_info *info, u8 mode) { struct v4l2_subdev *sd = &info->sd; int ret = -EINVAL; u8 reg; if (mode < REG_PARAMETER && mode > REG_CAPTURE) return ret; ret = m5mols_read_u8(sd, SYSTEM_SYSMODE, ®); if ((!ret && reg == mode) || ret) return ret; switch (reg) { case REG_PARAMETER: ret = m5mols_reg_mode(sd, REG_MONITOR); if (!ret && mode == REG_MONITOR) break; if (!ret) ret = m5mols_reg_mode(sd, REG_CAPTURE); break; case REG_MONITOR: if (mode == REG_PARAMETER) { ret = m5mols_reg_mode(sd, REG_PARAMETER); break; } ret = m5mols_reg_mode(sd, REG_CAPTURE); break; case REG_CAPTURE: ret = m5mols_reg_mode(sd, REG_MONITOR); if (!ret && mode == REG_MONITOR) break; if (!ret) ret = m5mols_reg_mode(sd, REG_PARAMETER); break; default: v4l2_warn(sd, "Wrong mode: %d\n", mode); } if (!ret) info->mode = mode; return ret; } /** * m5mols_get_version - retrieve full revisions information of M-5MOLS * * The version information includes revisions of hardware and firmware, * AutoFocus alghorithm version and the version string. */ static int m5mols_get_version(struct v4l2_subdev *sd) { struct m5mols_info *info = to_m5mols(sd); struct m5mols_version *ver = &info->ver; u8 *str = ver->str; int i; int ret; ret = m5mols_read_u8(sd, SYSTEM_VER_CUSTOMER, &ver->customer); if (!ret) ret = m5mols_read_u8(sd, SYSTEM_VER_PROJECT, &ver->project); if (!ret) ret = m5mols_read_u16(sd, SYSTEM_VER_FIRMWARE, &ver->fw); if (!ret) ret = m5mols_read_u16(sd, SYSTEM_VER_HARDWARE, &ver->hw); if (!ret) ret = m5mols_read_u16(sd, SYSTEM_VER_PARAMETER, &ver->param); if (!ret) ret = m5mols_read_u16(sd, SYSTEM_VER_AWB, &ver->awb); if (!ret) ret = m5mols_read_u8(sd, AF_VERSION, &ver->af); if (ret) return ret; for (i = 0; i < VERSION_STRING_SIZE; i++) { ret = m5mols_read_u8(sd, SYSTEM_VER_STRING, &str[i]); if (ret) return ret; } ver->fw = be16_to_cpu(ver->fw); ver->hw = be16_to_cpu(ver->hw); ver->param = be16_to_cpu(ver->param); ver->awb = be16_to_cpu(ver->awb); v4l2_info(sd, "Manufacturer\t[%s]\n", is_manufacturer(info, REG_SAMSUNG_ELECTRO) ? "Samsung Electro-Machanics" : is_manufacturer(info, REG_SAMSUNG_OPTICS) ? "Samsung Fiber-Optics" : is_manufacturer(info, REG_SAMSUNG_TECHWIN) ? "Samsung Techwin" : "None"); v4l2_info(sd, "Customer/Project\t[0x%02x/0x%02x]\n", info->ver.customer, info->ver.project); if (!is_available_af(info)) v4l2_info(sd, "No support Auto Focus on this firmware\n"); return ret; } /** * __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 == m5mols_default_ffmt[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_reg_res[0]; const struct m5mols_resolution *match = NULL; enum m5mols_restype stype = __find_restype(mf->code); int i = ARRAY_SIZE(m5mols_reg_res); 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->reg; *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->ffmt[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 = m5mols_default_ffmt[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 = m5mols_default_ffmt[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, }; /** * m5mols_sync_controls - Apply default scene mode and the current controls * * This is used only streaming for syncing between v4l2_ctrl framework and * m5mols's controls. First, do the scenemode to the sensor, then call * v4l2_ctrl_handler_setup. It can be same between some commands and * the scenemode's in the default v4l2_ctrls. But, such commands of control * should be prior to the scenemode's one. */ int m5mols_sync_controls(struct m5mols_info *info) { int ret = -EINVAL; if (!is_ctrl_synced(info)) { ret = m5mols_do_scenemode(info, REG_SCENE_NORMAL); if (ret) return ret; v4l2_ctrl_handler_setup(&info->handle); info->ctrl_sync = true; } return ret; } /** * m5mols_start_monitor - Start the monitor mode * * Before applying the controls setup the resolution and frame rate * in PARAMETER mode, and then switch over to MONITOR mode. */ static int m5mols_start_monitor(struct m5mols_info *info) { struct v4l2_subdev *sd = &info->sd; int ret; ret = m5mols_mode(info, REG_PARAMETER); if (!ret) ret = m5mols_write(sd, PARM_MON_SIZE, info->resolution); if (!ret) ret = m5mols_write(sd, PARM_MON_FPS, REG_FPS_30); if (!ret) ret = m5mols_mode(info, REG_MONITOR); if (!ret) ret = m5mols_sync_controls(info); return ret; } static int m5mols_s_stream(struct v4l2_subdev *sd, int enable) { struct m5mols_info *info = to_m5mols(sd); if (enable) { int ret = -EINVAL; if (is_code(info->code, M5MOLS_RESTYPE_MONITOR)) ret = m5mols_start_monitor(info); if (is_code(info->code, M5MOLS_RESTYPE_CAPTURE)) ret = m5mols_start_capture(info); return ret; } return m5mols_mode(info, REG_PARAMETER); } static const struct v4l2_subdev_video_ops m5mols_video_ops = { .s_stream = m5mols_s_stream, }; static int m5mols_s_ctrl(struct v4l2_ctrl *ctrl) { struct v4l2_subdev *sd = to_sd(ctrl); struct m5mols_info *info = to_m5mols(sd); int ret; info->mode_save = info->mode; ret = m5mols_mode(info, REG_PARAMETER); if (!ret) ret = m5mols_set_ctrl(ctrl); if (!ret) ret = m5mols_mode(info, info->mode_save); return ret; } static const struct v4l2_ctrl_ops m5mols_ctrl_ops = { .s_ctrl = m5mols_s_ctrl, }; static int m5mols_sensor_power(struct m5mols_info *info, bool enable) { struct v4l2_subdev *sd = &info->sd; struct i2c_client *client = v4l2_get_subdevdata(sd); const struct m5mols_platform_data *pdata = info->pdata; int ret; if (enable) { if (is_powered(info)) return 0; if (info->set_power) { ret = info->set_power(&client->dev, 1); if (ret) return ret; } ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies); if (ret) { info->set_power(&client->dev, 0); return ret; } gpio_set_value(pdata->gpio_reset, !pdata->reset_polarity); usleep_range(1000, 1000); info->power = true; return ret; } if (!is_powered(info)) return 0; ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies); if (ret) return ret; if (info->set_power) info->set_power(&client->dev, 0); gpio_set_value(pdata->gpio_reset, pdata->reset_polarity); usleep_range(1000, 1000); info->power = false; return ret; } /* m5mols_update_fw - optional firmware update routine */ int __attribute__ ((weak)) m5mols_update_fw(struct v4l2_subdev *sd, int (*set_power)(struct m5mols_info *, bool)) { return 0; } /** * m5mols_sensor_armboot - Booting M-5MOLS internal ARM core. * * Booting internal ARM core makes the M-5MOLS is ready for getting commands * with I2C. It's the first thing to be done after it powered up. It must wait * at least 520ms recommended by M-5MOLS datasheet, after executing arm booting. */ static int m5mols_sensor_armboot(struct v4l2_subdev *sd) { int ret; ret = m5mols_write(sd, FLASH_CAM_START, REG_START_ARM_BOOT); if (ret < 0) return ret; msleep(520); ret = m5mols_get_version(sd); if (!ret) ret = m5mols_update_fw(sd, m5mols_sensor_power); if (ret) return ret; v4l2_dbg(1, m5mols_debug, sd, "Success ARM Booting\n"); ret = m5mols_write(sd, PARM_INTERFACE, REG_INTERFACE_MIPI); if (!ret) ret = m5mols_enable_interrupt(sd, REG_INT_AF); return ret; } static int m5mols_init_controls(struct m5mols_info *info) { struct v4l2_subdev *sd = &info->sd; u16 max_exposure; u16 step_zoom; int ret; /* Determine value's range & step of controls for various FW version */ ret = m5mols_read_u16(sd, AE_MAX_GAIN_MON, &max_exposure); if (!ret) step_zoom = is_manufacturer(info, REG_SAMSUNG_OPTICS) ? 31 : 1; if (ret) return ret; v4l2_ctrl_handler_init(&info->handle, 6); info->autowb = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 0); info->saturation = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_SATURATION, 1, 5, 1, 3); info->zoom = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_ZOOM_ABSOLUTE, 1, 70, step_zoom, 1); info->exposure = v4l2_ctrl_new_std(&info->handle, &m5mols_ctrl_ops, V4L2_CID_EXPOSURE, 0, max_exposure, 1, (int)max_exposure/2); info->colorfx = v4l2_ctrl_new_std_menu(&info->handle, &m5mols_ctrl_ops, V4L2_CID_COLORFX, 4, (1 << V4L2_COLORFX_BW), V4L2_COLORFX_NONE); info->autoexposure = v4l2_ctrl_new_std_menu(&info->handle, &m5mols_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_MANUAL); sd->ctrl_handler = &info->handle; if (info->handle.error) { v4l2_err(sd, "Failed to initialize controls: %d\n", ret); v4l2_ctrl_handler_free(&info->handle); return info->handle.error; } v4l2_ctrl_cluster(2, &info->autoexposure); return 0; } /** * m5mols_s_power - Main sensor power control function * * To prevent breaking the lens when the sensor is powered off the Soft-Landing * algorithm is called where available. The Soft-Landing algorithm availability * dependends on the firmware provider. */ 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_init_controls(info); if (ret) return ret; info->ffmt[M5MOLS_RESTYPE_MONITOR] = m5mols_default_ffmt[M5MOLS_RESTYPE_MONITOR]; info->ffmt[M5MOLS_RESTYPE_CAPTURE] = m5mols_default_ffmt[M5MOLS_RESTYPE_CAPTURE]; return ret; } if (is_manufacturer(info, REG_SAMSUNG_TECHWIN)) { ret = m5mols_mode(info, REG_MONITOR); if (!ret) ret = m5mols_write(sd, AF_EXECUTE, REG_AF_STOP); if (!ret) ret = m5mols_write(sd, AF_MODE, REG_AF_POWEROFF); if (!ret) ret = m5mols_busy(sd, CAT_SYSTEM, CAT0_STATUS, REG_AF_IDLE); if (!ret) v4l2_info(sd, "Success soft-landing lens\n"); } ret = m5mols_sensor_power(info, false); if (!ret) { v4l2_ctrl_handler_free(&info->handle); info->ctrl_sync = 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, }; static const struct v4l2_subdev_ops m5mols_ops = { .core = &m5mols_core_ops, .pad = &m5mols_pad_ops, .video = &m5mols_video_ops, }; static void m5mols_irq_work(struct work_struct *work) { struct m5mols_info *info = container_of(work, struct m5mols_info, work_irq); struct v4l2_subdev *sd = &info->sd; u8 reg; int ret; if (!is_powered(info) || m5mols_read_u8(sd, SYSTEM_INT_FACTOR, &info->interrupt)) return; switch (info->interrupt & REG_INT_MASK) { case REG_INT_AF: if (!is_available_af(info)) break; ret = m5mols_read_u8(sd, AF_STATUS, ®); v4l2_dbg(2, m5mols_debug, sd, "AF %s\n", reg == REG_AF_FAIL ? "Failed" : reg == REG_AF_SUCCESS ? "Success" : reg == REG_AF_IDLE ? "Idle" : "Busy"); break; case REG_INT_CAPTURE: if (!test_and_set_bit(ST_CAPT_IRQ, &info->flags)) wake_up_interruptible(&info->irq_waitq); v4l2_dbg(2, m5mols_debug, sd, "CAPTURE\n"); break; default: v4l2_dbg(2, m5mols_debug, sd, "Undefined: %02x\n", reg); break; }; } static irqreturn_t m5mols_irq_handler(int irq, void *data) { struct v4l2_subdev *sd = data; struct m5mols_info *info = to_m5mols(sd); schedule_work(&info->work_irq); return IRQ_HANDLED; } static int __devinit 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; if (pdata == NULL) { dev_err(&client->dev, "No platform data\n"); return -EINVAL; } if (!gpio_is_valid(pdata->gpio_reset)) { dev_err(&client->dev, "No valid RESET GPIO specified\n"); return -EINVAL; } if (!client->irq) { dev_err(&client->dev, "Interrupt not assigned\n"); return -EINVAL; } info = kzalloc(sizeof(struct m5mols_info), GFP_KERNEL); if (!info) return -ENOMEM; info->pdata = pdata; info->set_power = pdata->set_power; ret = gpio_request(pdata->gpio_reset, "M5MOLS_NRST"); if (ret) { dev_err(&client->dev, "Failed to request gpio: %d\n", ret); goto out_free; } gpio_direction_output(pdata->gpio_reset, pdata->reset_polarity); 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_gpio; } sd = &info->sd; strlcpy(sd->name, MODULE_NAME, sizeof(sd->name)); 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; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; init_waitqueue_head(&info->irq_waitq); INIT_WORK(&info->work_irq, m5mols_irq_work); ret = request_irq(client->irq, m5mols_irq_handler, IRQF_TRIGGER_RISING, MODULE_NAME, sd); if (ret) { dev_err(&client->dev, "Interrupt request failed: %d\n", ret); goto out_me; } info->res_type = M5MOLS_RESTYPE_MONITOR; return 0; out_me: media_entity_cleanup(&sd->entity); out_reg: regulator_bulk_free(ARRAY_SIZE(supplies), supplies); out_gpio: gpio_free(pdata->gpio_reset); out_free: kfree(info); return ret; } static int __devexit 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); free_irq(client->irq, sd); regulator_bulk_free(ARRAY_SIZE(supplies), supplies); gpio_free(info->pdata->gpio_reset); media_entity_cleanup(&sd->entity); kfree(info); return 0; } static const struct i2c_device_id m5mols_id[] = { { MODULE_NAME, 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, m5mols_id); static struct i2c_driver m5mols_i2c_driver = { .driver = { .name = MODULE_NAME, }, .probe = m5mols_probe, .remove = __devexit_p(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 M-5MOLS 8M Pixel camera driver"); MODULE_LICENSE("GPL");