forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1058 lines
27 KiB
1058 lines
27 KiB
// 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 <[email protected]> |
|
* |
|
* Copyright (C) 2009 Samsung Electronics Co., Ltd. |
|
* Author: Dongsoo Nathaniel Kim <[email protected]> |
|
*/ |
|
|
|
#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) { |
|
if (info->set_power) |
|
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 <[email protected]>"); |
|
MODULE_AUTHOR("Dongsoo Kim <[email protected]>"); |
|
MODULE_DESCRIPTION("Fujitsu M-5MOLS 8M Pixel camera driver"); |
|
MODULE_LICENSE("GPL");
|
|
|