| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Driver for M-5MOLS 8M Pixel camera sensor with ISP |
| * |
| * Copyright (C) 2011 Samsung Electronics Co., Ltd. |
| * Author: HeungJun Kim <riverful.kim@samsung.com> |
| * |
| * Copyright (C) 2009 Samsung Electronics Co., Ltd. |
| * Author: Dongsoo Nathaniel Kim <dongsoo45.kim@samsung.com> |
| */ |
| |
| #include <linux/i2c.h> |
| #include <linux/slab.h> |
| #include <linux/irq.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/gpio.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/videodev2.h> |
| #include <linux/module.h> |
| #include <media/v4l2-ctrls.h> |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-subdev.h> |
| #include <media/i2c/m5mols.h> |
| |
| #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 = MEDIA_BUS_FMT_VYUY8_2X8, |
| .field = V4L2_FIELD_NONE, |
| .colorspace = V4L2_COLORSPACE_JPEG, |
| }, |
| [M5MOLS_RESTYPE_CAPTURE] = { |
| .width = 1920, |
| .height = 1080, |
| .code = MEDIA_BUS_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 |
| * @data: byte array |
| * @length: 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(*((__be16 *)data)); |
| else |
| return be32_to_cpu(*((__be32 *)data)); |
| } |
| |
| /** |
| * m5mols_read - I2C read function |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * @size: desired size of I2C packet |
| * @reg: combination of size, category and command for the I2C packet |
| * @val: read value |
| * |
| * Returns 0 on success, or else negative errno. |
| */ |
| static int m5mols_read(struct v4l2_subdev *sd, u32 size, u32 reg, u32 *val) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct m5mols_info *info = to_m5mols(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, 300); |
| |
| ret = i2c_transfer(client->adapter, msg, 2); |
| |
| if (ret == 2) { |
| *val = m5mols_swap_byte(&rbuf[1], size); |
| return 0; |
| } |
| |
| if (info->isp_ready) |
| v4l2_err(sd, "read failed: size:%d cat:%02x cmd:%02x. %d\n", |
| size, category, cmd, ret); |
| |
| return ret < 0 ? ret : -EIO; |
| } |
| |
| 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 |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * @reg: combination of size, category and command for the I2C packet |
| * @val: value to write |
| * |
| * Returns 0 on success, or else negative errno. |
| */ |
| int m5mols_write(struct v4l2_subdev *sd, u32 reg, u32 val) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct m5mols_info *info = to_m5mols(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); |
| |
| /* minimum stabilization time */ |
| usleep_range(200, 300); |
| |
| ret = i2c_transfer(client->adapter, msg, 1); |
| if (ret == 1) |
| return 0; |
| |
| if (info->isp_ready) |
| v4l2_err(sd, "write failed: cat:%02x cmd:%02x ret:%d\n", |
| category, cmd, ret); |
| |
| return ret < 0 ? ret : -EIO; |
| } |
| |
| /** |
| * m5mols_busy_wait - Busy waiting with I2C register polling |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * @reg: the I2C_REG() address of an 8-bit status register to check |
| * @value: expected status register value |
| * @mask: bit mask for the read status register value |
| * @timeout: timeout in milliseconds, or -1 for default timeout |
| * |
| * The @reg register value is ORed with @mask before comparing with @value. |
| * |
| * Return: 0 if the requested condition became true within less than |
| * @timeout ms, or else negative errno. |
| */ |
| int m5mols_busy_wait(struct v4l2_subdev *sd, u32 reg, u32 value, u32 mask, |
| int timeout) |
| { |
| int ms = timeout < 0 ? M5MOLS_BUSY_WAIT_DEF_TIMEOUT : timeout; |
| unsigned long end = jiffies + msecs_to_jiffies(ms); |
| u8 status; |
| |
| do { |
| int ret = m5mols_read_u8(sd, reg, &status); |
| |
| if (ret < 0 && !(mask & M5MOLS_I2C_RDY_WAIT_FL)) |
| return ret; |
| if (!ret && (status & mask & 0xff) == (value & 0xff)) |
| return 0; |
| usleep_range(100, 250); |
| } while (ms > 0 && time_is_after_jiffies(end)); |
| |
| return -EBUSY; |
| } |
| |
| /** |
| * m5mols_enable_interrupt - Clear interrupt pending bits and unmask interrupts |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * @reg: combination of size, category and command for the I2C packet |
| * |
| * 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; |
| } |
| |
| int m5mols_wait_interrupt(struct v4l2_subdev *sd, u8 irq_mask, u32 timeout) |
| { |
| struct m5mols_info *info = to_m5mols(sd); |
| |
| int ret = wait_event_interruptible_timeout(info->irq_waitq, |
| atomic_add_unless(&info->irq_done, -1, 0), |
| msecs_to_jiffies(timeout)); |
| if (ret <= 0) |
| return ret ? ret : -ETIMEDOUT; |
| |
| return m5mols_busy_wait(sd, SYSTEM_INT_FACTOR, irq_mask, |
| M5MOLS_I2C_RDY_WAIT_FL | irq_mask, -1); |
| } |
| |
| /** |
| * m5mols_reg_mode - Write the mode and check busy status |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * @mode: the required operation mode |
| * |
| * 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); |
| if (ret < 0) |
| return ret; |
| return m5mols_busy_wait(sd, SYSTEM_SYSMODE, mode, 0xff, |
| M5MOLS_MODE_CHANGE_TIMEOUT); |
| } |
| |
| /** |
| * m5mols_set_mode - set the M-5MOLS controller mode |
| * @info: M-5MOLS driver data structure |
| * @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 a command |
| * belongs to. |
| */ |
| int m5mols_set_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) |
| return ret; |
| |
| switch (reg) { |
| case REG_PARAMETER: |
| ret = m5mols_reg_mode(sd, REG_MONITOR); |
| if (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 (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 |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * |
| * 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; |
| } |
| |
| v4l2_info(sd, "Manufacturer\t[%s]\n", |
| is_manufacturer(info, REG_SAMSUNG_ELECTRO) ? |
| "Samsung Electro-Mechanics" : |
| 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(u32 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 |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * @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_pad_config *cfg, |
| enum v4l2_subdev_format_whence which, |
| enum m5mols_restype type) |
| { |
| if (which == V4L2_SUBDEV_FORMAT_TRY) |
| return cfg ? v4l2_subdev_get_try_format(&info->sd, cfg, 0) : NULL; |
| |
| return &info->ffmt[type]; |
| } |
| |
| static int m5mols_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, |
| struct v4l2_subdev_format *fmt) |
| { |
| struct m5mols_info *info = to_m5mols(sd); |
| struct v4l2_mbus_framefmt *format; |
| int ret = 0; |
| |
| mutex_lock(&info->lock); |
| |
| format = __find_format(info, cfg, fmt->which, info->res_type); |
| if (format) |
| fmt->format = *format; |
| else |
| ret = -EINVAL; |
| |
| mutex_unlock(&info->lock); |
| return ret; |
| } |
| |
| static int m5mols_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, |
| 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; |
| |
| ret = __find_resolution(sd, format, &type, &resolution); |
| if (ret < 0) |
| return ret; |
| |
| sfmt = __find_format(info, cfg, fmt->which, type); |
| if (!sfmt) |
| return 0; |
| |
| mutex_lock(&info->lock); |
| |
| format->code = m5mols_default_ffmt[type].code; |
| format->colorspace = V4L2_COLORSPACE_JPEG; |
| format->field = V4L2_FIELD_NONE; |
| |
| if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| *sfmt = *format; |
| info->resolution = resolution; |
| info->res_type = type; |
| } |
| |
| mutex_unlock(&info->lock); |
| return ret; |
| } |
| |
| static int m5mols_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, |
| struct v4l2_mbus_frame_desc *fd) |
| { |
| struct m5mols_info *info = to_m5mols(sd); |
| |
| if (pad != 0 || fd == NULL) |
| return -EINVAL; |
| |
| mutex_lock(&info->lock); |
| /* |
| * .get_frame_desc is only used for compressed formats, |
| * thus we always return the capture frame parameters here. |
| */ |
| fd->entry[0].length = info->cap.buf_size; |
| fd->entry[0].pixelcode = info->ffmt[M5MOLS_RESTYPE_CAPTURE].code; |
| mutex_unlock(&info->lock); |
| |
| fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX; |
| fd->num_entries = 1; |
| |
| return 0; |
| } |
| |
| static int m5mols_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad, |
| struct v4l2_mbus_frame_desc *fd) |
| { |
| struct m5mols_info *info = to_m5mols(sd); |
| struct v4l2_mbus_framefmt *mf = &info->ffmt[M5MOLS_RESTYPE_CAPTURE]; |
| |
| if (pad != 0 || fd == NULL) |
| return -EINVAL; |
| |
| fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX; |
| fd->num_entries = 1; |
| fd->entry[0].length = clamp_t(u32, fd->entry[0].length, |
| mf->width * mf->height, |
| M5MOLS_MAIN_JPEG_SIZE_MAX); |
| mutex_lock(&info->lock); |
| info->cap.buf_size = fd->entry[0].length; |
| mutex_unlock(&info->lock); |
| |
| return 0; |
| } |
| |
| |
| static int m5mols_enum_mbus_code(struct v4l2_subdev *sd, |
| struct v4l2_subdev_pad_config *cfg, |
| 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 const 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, |
| .get_frame_desc = m5mols_get_frame_desc, |
| .set_frame_desc = m5mols_set_frame_desc, |
| }; |
| |
| /** |
| * m5mols_restore_controls - Apply current control values to the registers |
| * @info: M-5MOLS driver data structure |
| * |
| * m5mols_do_scenemode() handles all parameters for which there is yet no |
| * individual control. It should be replaced at some point by setting each |
| * control individually, in required register set up order. |
| */ |
| int m5mols_restore_controls(struct m5mols_info *info) |
| { |
| int ret; |
| |
| if (info->ctrl_sync) |
| return 0; |
| |
| ret = m5mols_do_scenemode(info, REG_SCENE_NORMAL); |
| if (ret) |
| return ret; |
| |
| ret = v4l2_ctrl_handler_setup(&info->handle); |
| info->ctrl_sync = !ret; |
| |
| return ret; |
| } |
| |
| /** |
| * m5mols_start_monitor - Start the monitor mode |
| * @info: M-5MOLS driver data structure |
| * |
| * 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_set_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_set_mode(info, REG_MONITOR); |
| if (!ret) |
| ret = m5mols_restore_controls(info); |
| |
| return ret; |
| } |
| |
| static int m5mols_s_stream(struct v4l2_subdev *sd, int enable) |
| { |
| struct m5mols_info *info = to_m5mols(sd); |
| u32 code; |
| int ret; |
| |
| mutex_lock(&info->lock); |
| code = info->ffmt[info->res_type].code; |
| |
| if (enable) { |
| if (is_code(code, M5MOLS_RESTYPE_MONITOR)) |
| ret = m5mols_start_monitor(info); |
| else if (is_code(code, M5MOLS_RESTYPE_CAPTURE)) |
| ret = m5mols_start_capture(info); |
| else |
| ret = -EINVAL; |
| } else { |
| ret = m5mols_set_mode(info, REG_PARAMETER); |
| } |
| |
| mutex_unlock(&info->lock); |
| return ret; |
| } |
| |
| static const struct v4l2_subdev_video_ops m5mols_video_ops = { |
| .s_stream = m5mols_s_stream, |
| }; |
| |
| 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 (info->power == enable) |
| return 0; |
| |
| if (enable) { |
| 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); |
| info->power = 1; |
| |
| return ret; |
| } |
| |
| 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); |
| |
| info->isp_ready = 0; |
| info->power = 0; |
| |
| 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_fw_start - M-5MOLS internal ARM controller initialization |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * |
| * Execute the M-5MOLS internal ARM controller initialization sequence. |
| * This function should be called after the supply voltage has been |
| * applied and before any requests to the device are made. |
| */ |
| static int m5mols_fw_start(struct v4l2_subdev *sd) |
| { |
| struct m5mols_info *info = to_m5mols(sd); |
| int ret; |
| |
| atomic_set(&info->irq_done, 0); |
| /* Wait until I2C slave is initialized in Flash Writer mode */ |
| ret = m5mols_busy_wait(sd, FLASH_CAM_START, REG_IN_FLASH_MODE, |
| M5MOLS_I2C_RDY_WAIT_FL | 0xff, -1); |
| if (!ret) |
| ret = m5mols_write(sd, FLASH_CAM_START, REG_START_ARM_BOOT); |
| if (!ret) |
| ret = m5mols_wait_interrupt(sd, REG_INT_MODE, 2000); |
| if (ret < 0) |
| return ret; |
| |
| info->isp_ready = 1; |
| |
| 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 | REG_INT_CAPTURE); |
| |
| return ret; |
| } |
| |
| /* Execute the lens soft-landing algorithm */ |
| static int m5mols_auto_focus_stop(struct m5mols_info *info) |
| { |
| int ret; |
| |
| ret = m5mols_write(&info->sd, AF_EXECUTE, REG_AF_STOP); |
| if (!ret) |
| ret = m5mols_write(&info->sd, AF_MODE, REG_AF_POWEROFF); |
| if (!ret) |
| ret = m5mols_busy_wait(&info->sd, SYSTEM_STATUS, REG_AF_IDLE, |
| 0xff, -1); |
| return ret; |
| } |
| |
| /** |
| * m5mols_s_power - Main sensor power control function |
| * @sd: sub-device, as pointed by struct v4l2_subdev |
| * @on: if true, powers on the device; powers off otherwise. |
| * |
| * 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; |
| |
| mutex_lock(&info->lock); |
| |
| if (on) { |
| ret = m5mols_sensor_power(info, true); |
| if (!ret) |
| ret = m5mols_fw_start(sd); |
| } else { |
| if (is_manufacturer(info, REG_SAMSUNG_TECHWIN)) { |
| ret = m5mols_set_mode(info, REG_MONITOR); |
| if (!ret) |
| ret = m5mols_auto_focus_stop(info); |
| if (ret < 0) |
| v4l2_warn(sd, "Soft landing lens failed\n"); |
| } |
| ret = m5mols_sensor_power(info, false); |
| |
| info->ctrl_sync = 0; |
| } |
| |
| mutex_unlock(&info->lock); |
| 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, |
| .log_status = m5mols_log_status, |
| }; |
| |
| /* |
| * V4L2 subdev internal operations |
| */ |
| static int m5mols_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
| { |
| struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(sd, fh->pad, 0); |
| |
| *format = m5mols_default_ffmt[0]; |
| return 0; |
| } |
| |
| static const struct v4l2_subdev_internal_ops m5mols_subdev_internal_ops = { |
| .open = m5mols_open, |
| }; |
| |
| static const struct v4l2_subdev_ops m5mols_ops = { |
| .core = &m5mols_core_ops, |
| .pad = &m5mols_pad_ops, |
| .video = &m5mols_video_ops, |
| }; |
| |
| static irqreturn_t m5mols_irq_handler(int irq, void *data) |
| { |
| struct m5mols_info *info = to_m5mols(data); |
| |
| atomic_set(&info->irq_done, 1); |
| wake_up_interruptible(&info->irq_waitq); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int m5mols_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| const struct m5mols_platform_data *pdata = client->dev.platform_data; |
| unsigned long gpio_flags; |
| 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 = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL); |
| if (!info) |
| return -ENOMEM; |
| |
| info->pdata = pdata; |
| info->set_power = pdata->set_power; |
| |
| gpio_flags = pdata->reset_polarity |
| ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; |
| ret = devm_gpio_request_one(&client->dev, pdata->gpio_reset, gpio_flags, |
| "M5MOLS_NRST"); |
| if (ret) { |
| dev_err(&client->dev, "Failed to request gpio: %d\n", ret); |
| return ret; |
| } |
| |
| ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies), |
| supplies); |
| if (ret) { |
| dev_err(&client->dev, "Failed to get regulators: %d\n", ret); |
| return ret; |
| } |
| |
| sd = &info->sd; |
| v4l2_i2c_subdev_init(sd, client, &m5mols_ops); |
| /* Static name; NEVER use in new drivers! */ |
| strscpy(sd->name, MODULE_NAME, sizeof(sd->name)); |
| sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; |
| |
| sd->internal_ops = &m5mols_subdev_internal_ops; |
| info->pad.flags = MEDIA_PAD_FL_SOURCE; |
| ret = media_entity_pads_init(&sd->entity, 1, &info->pad); |
| if (ret < 0) |
| return ret; |
| sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; |
| |
| init_waitqueue_head(&info->irq_waitq); |
| mutex_init(&info->lock); |
| |
| ret = devm_request_irq(&client->dev, client->irq, m5mols_irq_handler, |
| IRQF_TRIGGER_RISING, MODULE_NAME, sd); |
| if (ret) { |
| dev_err(&client->dev, "Interrupt request failed: %d\n", ret); |
| goto error; |
| } |
| info->res_type = M5MOLS_RESTYPE_MONITOR; |
| info->ffmt[0] = m5mols_default_ffmt[0]; |
| info->ffmt[1] = m5mols_default_ffmt[1]; |
| |
| ret = m5mols_sensor_power(info, true); |
| if (ret) |
| goto error; |
| |
| ret = m5mols_fw_start(sd); |
| if (!ret) |
| ret = m5mols_init_controls(sd); |
| |
| ret = m5mols_sensor_power(info, false); |
| if (!ret) |
| return 0; |
| error: |
| media_entity_cleanup(&sd->entity); |
| return ret; |
| } |
| |
| static int m5mols_remove(struct i2c_client *client) |
| { |
| struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| |
| v4l2_device_unregister_subdev(sd); |
| v4l2_ctrl_handler_free(sd->ctrl_handler); |
| media_entity_cleanup(&sd->entity); |
| |
| 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 = m5mols_remove, |
| .id_table = m5mols_id, |
| }; |
| |
| module_i2c_driver(m5mols_i2c_driver); |
| |
| MODULE_AUTHOR("HeungJun Kim <riverful.kim@samsung.com>"); |
| MODULE_AUTHOR("Dongsoo Kim <dongsoo45.kim@samsung.com>"); |
| MODULE_DESCRIPTION("Fujitsu M-5MOLS 8M Pixel camera driver"); |
| MODULE_LICENSE("GPL"); |