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kernel/drivers/media/i2c/s5c73m3/s5c73m3-core.c

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init repo.
2024-07-22 17:22:30 +08:00
// SPDX-License-Identifier: GPL-2.0-only
/*
* Samsung LSI S5C73M3 8M pixel camera driver
*
* Copyright (C) 2012, Samsung Electronics, Co., Ltd.
* Sylwester Nawrocki <s.nawrocki@samsung.com>
* Andrzej Hajda <a.hajda@samsung.com>
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/media.h>
#include <linux/module.h>
#include <linux/of_gpio.h>
#include <linux/of_graph.h>
#include <linux/regulator/consumer.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/videodev2.h>
#include <media/media-entity.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-mediabus.h>
#include <media/i2c/s5c73m3.h>
#include <media/v4l2-fwnode.h>
#include "s5c73m3.h"
int s5c73m3_dbg;
module_param_named(debug, s5c73m3_dbg, int, 0644);
static int boot_from_rom = 1;
module_param(boot_from_rom, int, 0644);
static int update_fw;
module_param(update_fw, int, 0644);
#define S5C73M3_EMBEDDED_DATA_MAXLEN SZ_4K
#define S5C73M3_MIPI_DATA_LANES 4
#define S5C73M3_CLK_NAME "cis_extclk"
static const char * const s5c73m3_supply_names[S5C73M3_MAX_SUPPLIES] = {
"vdd-int", /* Digital Core supply (1.2V), CAM_ISP_CORE_1.2V */
"vdda", /* Analog Core supply (1.2V), CAM_SENSOR_CORE_1.2V */
"vdd-reg", /* Regulator input supply (2.8V), CAM_SENSOR_A2.8V */
"vddio-host", /* Digital Host I/O power supply (1.8V...2.8V),
CAM_ISP_SENSOR_1.8V */
"vddio-cis", /* Digital CIS I/O power (1.2V...1.8V),
CAM_ISP_MIPI_1.2V */
"vdd-af", /* Lens, CAM_AF_2.8V */
};
static const struct s5c73m3_frame_size s5c73m3_isp_resolutions[] = {
{ 320, 240, COMM_CHG_MODE_YUV_320_240 },
{ 352, 288, COMM_CHG_MODE_YUV_352_288 },
{ 640, 480, COMM_CHG_MODE_YUV_640_480 },
{ 880, 720, COMM_CHG_MODE_YUV_880_720 },
{ 960, 720, COMM_CHG_MODE_YUV_960_720 },
{ 1008, 672, COMM_CHG_MODE_YUV_1008_672 },
{ 1184, 666, COMM_CHG_MODE_YUV_1184_666 },
{ 1280, 720, COMM_CHG_MODE_YUV_1280_720 },
{ 1536, 864, COMM_CHG_MODE_YUV_1536_864 },
{ 1600, 1200, COMM_CHG_MODE_YUV_1600_1200 },
{ 1632, 1224, COMM_CHG_MODE_YUV_1632_1224 },
{ 1920, 1080, COMM_CHG_MODE_YUV_1920_1080 },
{ 1920, 1440, COMM_CHG_MODE_YUV_1920_1440 },
{ 2304, 1296, COMM_CHG_MODE_YUV_2304_1296 },
{ 3264, 2448, COMM_CHG_MODE_YUV_3264_2448 },
};
static const struct s5c73m3_frame_size s5c73m3_jpeg_resolutions[] = {
{ 640, 480, COMM_CHG_MODE_JPEG_640_480 },
{ 800, 450, COMM_CHG_MODE_JPEG_800_450 },
{ 800, 600, COMM_CHG_MODE_JPEG_800_600 },
{ 1024, 768, COMM_CHG_MODE_JPEG_1024_768 },
{ 1280, 720, COMM_CHG_MODE_JPEG_1280_720 },
{ 1280, 960, COMM_CHG_MODE_JPEG_1280_960 },
{ 1600, 900, COMM_CHG_MODE_JPEG_1600_900 },
{ 1600, 1200, COMM_CHG_MODE_JPEG_1600_1200 },
{ 2048, 1152, COMM_CHG_MODE_JPEG_2048_1152 },
{ 2048, 1536, COMM_CHG_MODE_JPEG_2048_1536 },
{ 2560, 1440, COMM_CHG_MODE_JPEG_2560_1440 },
{ 2560, 1920, COMM_CHG_MODE_JPEG_2560_1920 },
{ 3264, 1836, COMM_CHG_MODE_JPEG_3264_1836 },
{ 3264, 2176, COMM_CHG_MODE_JPEG_3264_2176 },
{ 3264, 2448, COMM_CHG_MODE_JPEG_3264_2448 },
};
static const struct s5c73m3_frame_size * const s5c73m3_resolutions[] = {
[RES_ISP] = s5c73m3_isp_resolutions,
[RES_JPEG] = s5c73m3_jpeg_resolutions
};
static const int s5c73m3_resolutions_len[] = {
[RES_ISP] = ARRAY_SIZE(s5c73m3_isp_resolutions),
[RES_JPEG] = ARRAY_SIZE(s5c73m3_jpeg_resolutions)
};
static const struct s5c73m3_interval s5c73m3_intervals[] = {
{ COMM_FRAME_RATE_FIXED_7FPS, {142857, 1000000}, {3264, 2448} },
{ COMM_FRAME_RATE_FIXED_15FPS, {66667, 1000000}, {3264, 2448} },
{ COMM_FRAME_RATE_FIXED_20FPS, {50000, 1000000}, {2304, 1296} },
{ COMM_FRAME_RATE_FIXED_30FPS, {33333, 1000000}, {2304, 1296} },
};
#define S5C73M3_DEFAULT_FRAME_INTERVAL 3 /* 30 fps */
static void s5c73m3_fill_mbus_fmt(struct v4l2_mbus_framefmt *mf,
const struct s5c73m3_frame_size *fs,
u32 code)
{
mf->width = fs->width;
mf->height = fs->height;
mf->code = code;
mf->colorspace = V4L2_COLORSPACE_JPEG;
mf->field = V4L2_FIELD_NONE;
}
static int s5c73m3_i2c_write(struct i2c_client *client, u16 addr, u16 data)
{
u8 buf[4] = { addr >> 8, addr & 0xff, data >> 8, data & 0xff };
int ret = i2c_master_send(client, buf, sizeof(buf));
v4l_dbg(4, s5c73m3_dbg, client, "%s: addr 0x%04x, data 0x%04x\n",
__func__, addr, data);
if (ret == 4)
return 0;
return ret < 0 ? ret : -EREMOTEIO;
}
static int s5c73m3_i2c_read(struct i2c_client *client, u16 addr, u16 *data)
{
int ret;
u8 rbuf[2], wbuf[2] = { addr >> 8, addr & 0xff };
struct i2c_msg msg[2] = {
{
.addr = client->addr,
.flags = 0,
.len = sizeof(wbuf),
.buf = wbuf
}, {
.addr = client->addr,
.flags = I2C_M_RD,
.len = sizeof(rbuf),
.buf = rbuf
}
};
/*
* Issue repeated START after writing 2 address bytes and
* just one STOP only after reading the data bytes.
*/
ret = i2c_transfer(client->adapter, msg, 2);
if (ret == 2) {
*data = be16_to_cpup((__be16 *)rbuf);
v4l2_dbg(4, s5c73m3_dbg, client,
"%s: addr: 0x%04x, data: 0x%04x\n",
__func__, addr, *data);
return 0;
}
v4l2_err(client, "I2C read failed: addr: %04x, (%d)\n", addr, ret);
return ret >= 0 ? -EREMOTEIO : ret;
}
int s5c73m3_write(struct s5c73m3 *state, u32 addr, u16 data)
{
struct i2c_client *client = state->i2c_client;
int ret;
if ((addr ^ state->i2c_write_address) & 0xffff0000) {
ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRH, addr >> 16);
if (ret < 0) {
state->i2c_write_address = 0;
return ret;
}
}
if ((addr ^ state->i2c_write_address) & 0xffff) {
ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRL, addr & 0xffff);
if (ret < 0) {
state->i2c_write_address = 0;
return ret;
}
}
state->i2c_write_address = addr;
ret = s5c73m3_i2c_write(client, REG_CMDBUF_ADDR, data);
if (ret < 0)
return ret;
state->i2c_write_address += 2;
return ret;
}
int s5c73m3_read(struct s5c73m3 *state, u32 addr, u16 *data)
{
struct i2c_client *client = state->i2c_client;
int ret;
if ((addr ^ state->i2c_read_address) & 0xffff0000) {
ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRH, addr >> 16);
if (ret < 0) {
state->i2c_read_address = 0;
return ret;
}
}
if ((addr ^ state->i2c_read_address) & 0xffff) {
ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRL, addr & 0xffff);
if (ret < 0) {
state->i2c_read_address = 0;
return ret;
}
}
state->i2c_read_address = addr;
ret = s5c73m3_i2c_read(client, REG_CMDBUF_ADDR, data);
if (ret < 0)
return ret;
state->i2c_read_address += 2;
return ret;
}
static int s5c73m3_check_status(struct s5c73m3 *state, unsigned int value)
{
unsigned long start = jiffies;
unsigned long end = start + msecs_to_jiffies(2000);
int ret;
u16 status;
int count = 0;
do {
ret = s5c73m3_read(state, REG_STATUS, &status);
if (ret < 0 || status == value)
break;
usleep_range(500, 1000);
++count;
} while (time_is_after_jiffies(end));
if (count > 0)
v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
"status check took %dms\n",
jiffies_to_msecs(jiffies - start));
if (ret == 0 && status != value) {
u16 i2c_status = 0;
u16 i2c_seq_status = 0;
s5c73m3_read(state, REG_I2C_STATUS, &i2c_status);
s5c73m3_read(state, REG_I2C_SEQ_STATUS, &i2c_seq_status);
v4l2_err(&state->sensor_sd,
"wrong status %#x, expected: %#x, i2c_status: %#x/%#x\n",
status, value, i2c_status, i2c_seq_status);
return -ETIMEDOUT;
}
return ret;
}
int s5c73m3_isp_command(struct s5c73m3 *state, u16 command, u16 data)
{
int ret;
ret = s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED);
if (ret < 0)
return ret;
ret = s5c73m3_write(state, 0x00095000, command);
if (ret < 0)
return ret;
ret = s5c73m3_write(state, 0x00095002, data);
if (ret < 0)
return ret;
return s5c73m3_write(state, REG_STATUS, 0x0001);
}
static int s5c73m3_isp_comm_result(struct s5c73m3 *state, u16 command,
u16 *data)
{
return s5c73m3_read(state, COMM_RESULT_OFFSET + command, data);
}
static int s5c73m3_set_af_softlanding(struct s5c73m3 *state)
{
unsigned long start = jiffies;
u16 af_softlanding;
int count = 0;
int ret;
const char *msg;
ret = s5c73m3_isp_command(state, COMM_AF_SOFTLANDING,
COMM_AF_SOFTLANDING_ON);
if (ret < 0) {
v4l2_info(&state->sensor_sd, "AF soft-landing failed\n");
return ret;
}
for (;;) {
ret = s5c73m3_isp_comm_result(state, COMM_AF_SOFTLANDING,
&af_softlanding);
if (ret < 0) {
msg = "failed";
break;
}
if (af_softlanding == COMM_AF_SOFTLANDING_RES_COMPLETE) {
msg = "succeeded";
break;
}
if (++count > 100) {
ret = -ETIME;
msg = "timed out";
break;
}
msleep(25);
}
v4l2_info(&state->sensor_sd, "AF soft-landing %s after %dms\n",
msg, jiffies_to_msecs(jiffies - start));
return ret;
}
static int s5c73m3_load_fw(struct v4l2_subdev *sd)
{
struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
struct i2c_client *client = state->i2c_client;
const struct firmware *fw;
int ret;
char fw_name[20];
snprintf(fw_name, sizeof(fw_name), "SlimISP_%.2s.bin",
state->fw_file_version);
ret = request_firmware(&fw, fw_name, &client->dev);
if (ret < 0) {
v4l2_err(sd, "Firmware request failed (%s)\n", fw_name);
return -EINVAL;
}
v4l2_info(sd, "Loading firmware (%s, %zu B)\n", fw_name, fw->size);
ret = s5c73m3_spi_write(state, fw->data, fw->size, 64);
if (ret >= 0)
state->isp_ready = 1;
else
v4l2_err(sd, "SPI write failed\n");
release_firmware(fw);
return ret;
}
static int s5c73m3_set_frame_size(struct s5c73m3 *state)
{
const struct s5c73m3_frame_size *prev_size =
state->sensor_pix_size[RES_ISP];
const struct s5c73m3_frame_size *cap_size =
state->sensor_pix_size[RES_JPEG];
unsigned int chg_mode;
v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
"Preview size: %dx%d, reg_val: 0x%x\n",
prev_size->width, prev_size->height, prev_size->reg_val);
chg_mode = prev_size->reg_val | COMM_CHG_MODE_NEW;
if (state->mbus_code == S5C73M3_JPEG_FMT) {
v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
"Capture size: %dx%d, reg_val: 0x%x\n",
cap_size->width, cap_size->height, cap_size->reg_val);
chg_mode |= cap_size->reg_val;
}
return s5c73m3_isp_command(state, COMM_CHG_MODE, chg_mode);
}
static int s5c73m3_set_frame_rate(struct s5c73m3 *state)
{
int ret;
if (state->ctrls.stabilization->val)
return 0;
if (WARN_ON(state->fiv == NULL))
return -EINVAL;
ret = s5c73m3_isp_command(state, COMM_FRAME_RATE, state->fiv->fps_reg);
if (!ret)
state->apply_fiv = 0;
return ret;
}
static int __s5c73m3_s_stream(struct s5c73m3 *state, struct v4l2_subdev *sd,
int on)
{
u16 mode;
int ret;
if (on && state->apply_fmt) {
if (state->mbus_code == S5C73M3_JPEG_FMT)
mode = COMM_IMG_OUTPUT_INTERLEAVED;
else
mode = COMM_IMG_OUTPUT_YUV;
ret = s5c73m3_isp_command(state, COMM_IMG_OUTPUT, mode);
if (!ret)
ret = s5c73m3_set_frame_size(state);
if (ret)
return ret;
state->apply_fmt = 0;
}
ret = s5c73m3_isp_command(state, COMM_SENSOR_STREAMING, !!on);
if (ret)
return ret;
state->streaming = !!on;
if (!on)
return ret;
if (state->apply_fiv) {
ret = s5c73m3_set_frame_rate(state);
if (ret < 0)
v4l2_err(sd, "Error setting frame rate(%d)\n", ret);
}
return s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED);
}
static int s5c73m3_oif_s_stream(struct v4l2_subdev *sd, int on)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
int ret;
mutex_lock(&state->lock);
ret = __s5c73m3_s_stream(state, sd, on);
mutex_unlock(&state->lock);
return ret;
}
static int s5c73m3_system_status_wait(struct s5c73m3 *state, u32 value,
unsigned int delay, unsigned int steps)
{
u16 reg = 0;
while (steps-- > 0) {
int ret = s5c73m3_read(state, 0x30100010, &reg);
if (ret < 0)
return ret;
if (reg == value)
return 0;
usleep_range(delay, delay + 25);
}
return -ETIMEDOUT;
}
static int s5c73m3_read_fw_version(struct s5c73m3 *state)
{
struct v4l2_subdev *sd = &state->sensor_sd;
int i, ret;
u16 data[2];
int offset;
offset = state->isp_ready ? 0x60 : 0;
for (i = 0; i < S5C73M3_SENSOR_FW_LEN / 2; i++) {
ret = s5c73m3_read(state, offset + i * 2, data);
if (ret < 0)
return ret;
state->sensor_fw[i * 2] = (char)(*data & 0xff);
state->sensor_fw[i * 2 + 1] = (char)(*data >> 8);
}
state->sensor_fw[S5C73M3_SENSOR_FW_LEN] = '\0';
for (i = 0; i < S5C73M3_SENSOR_TYPE_LEN / 2; i++) {
ret = s5c73m3_read(state, offset + 6 + i * 2, data);
if (ret < 0)
return ret;
state->sensor_type[i * 2] = (char)(*data & 0xff);
state->sensor_type[i * 2 + 1] = (char)(*data >> 8);
}
state->sensor_type[S5C73M3_SENSOR_TYPE_LEN] = '\0';
ret = s5c73m3_read(state, offset + 0x14, data);
if (ret >= 0) {
ret = s5c73m3_read(state, offset + 0x16, data + 1);
if (ret >= 0)
state->fw_size = data[0] + (data[1] << 16);
}
v4l2_info(sd, "Sensor type: %s, FW version: %s\n",
state->sensor_type, state->sensor_fw);
return ret;
}
static int s5c73m3_fw_update_from(struct s5c73m3 *state)
{
struct v4l2_subdev *sd = &state->sensor_sd;
u16 status = COMM_FW_UPDATE_NOT_READY;
int ret;
int count = 0;
v4l2_warn(sd, "Updating F-ROM firmware.\n");
do {
if (status == COMM_FW_UPDATE_NOT_READY) {
ret = s5c73m3_isp_command(state, COMM_FW_UPDATE, 0);
if (ret < 0)
return ret;
}
ret = s5c73m3_read(state, 0x00095906, &status);
if (ret < 0)
return ret;
switch (status) {
case COMM_FW_UPDATE_FAIL:
v4l2_warn(sd, "Updating F-ROM firmware failed.\n");
return -EIO;
case COMM_FW_UPDATE_SUCCESS:
v4l2_warn(sd, "Updating F-ROM firmware finished.\n");
return 0;
}
++count;
msleep(20);
} while (count < 500);
v4l2_warn(sd, "Updating F-ROM firmware timed-out.\n");
return -ETIMEDOUT;
}
static int s5c73m3_spi_boot(struct s5c73m3 *state, bool load_fw)
{
struct v4l2_subdev *sd = &state->sensor_sd;
int ret;
/* Run ARM MCU */
ret = s5c73m3_write(state, 0x30000004, 0xffff);
if (ret < 0)
return ret;
usleep_range(400, 500);
/* Check booting status */
ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3);
if (ret < 0) {
v4l2_err(sd, "booting failed: %d\n", ret);
return ret;
}
/* P,M,S and Boot Mode */
ret = s5c73m3_write(state, 0x30100014, 0x2146);
if (ret < 0)
return ret;
ret = s5c73m3_write(state, 0x30100010, 0x210c);
if (ret < 0)
return ret;
usleep_range(200, 250);
/* Check SPI status */
ret = s5c73m3_system_status_wait(state, 0x210d, 100, 300);
if (ret < 0)
v4l2_err(sd, "SPI not ready: %d\n", ret);
/* Firmware download over SPI */
if (load_fw)
s5c73m3_load_fw(sd);
/* MCU reset */
ret = s5c73m3_write(state, 0x30000004, 0xfffd);
if (ret < 0)
return ret;
/* Remap */
ret = s5c73m3_write(state, 0x301000a4, 0x0183);
if (ret < 0)
return ret;
/* MCU restart */
ret = s5c73m3_write(state, 0x30000004, 0xffff);
if (ret < 0 || !load_fw)
return ret;
ret = s5c73m3_read_fw_version(state);
if (ret < 0)
return ret;
if (load_fw && update_fw) {
ret = s5c73m3_fw_update_from(state);
update_fw = 0;
}
return ret;
}
static int s5c73m3_set_timing_register_for_vdd(struct s5c73m3 *state)
{
static const u32 regs[][2] = {
{ 0x30100018, 0x0618 },
{ 0x3010001c, 0x10c1 },
{ 0x30100020, 0x249e }
};
int ret;
int i;
for (i = 0; i < ARRAY_SIZE(regs); i++) {
ret = s5c73m3_write(state, regs[i][0], regs[i][1]);
if (ret < 0)
return ret;
}
return 0;
}
static void s5c73m3_set_fw_file_version(struct s5c73m3 *state)
{
switch (state->sensor_fw[0]) {
case 'G':
case 'O':
state->fw_file_version[0] = 'G';
break;
case 'S':
case 'Z':
state->fw_file_version[0] = 'Z';
break;
}
switch (state->sensor_fw[1]) {
case 'C'...'F':
state->fw_file_version[1] = state->sensor_fw[1];
break;
}
}
static int s5c73m3_get_fw_version(struct s5c73m3 *state)
{
struct v4l2_subdev *sd = &state->sensor_sd;
int ret;
/* Run ARM MCU */
ret = s5c73m3_write(state, 0x30000004, 0xffff);
if (ret < 0)
return ret;
usleep_range(400, 500);
/* Check booting status */
ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3);
if (ret < 0) {
v4l2_err(sd, "%s: booting failed: %d\n", __func__, ret);
return ret;
}
/* Change I/O Driver Current in order to read from F-ROM */
ret = s5c73m3_write(state, 0x30100120, 0x0820);
ret = s5c73m3_write(state, 0x30100124, 0x0820);
/* Offset Setting */
ret = s5c73m3_write(state, 0x00010418, 0x0008);
/* P,M,S and Boot Mode */
ret = s5c73m3_write(state, 0x30100014, 0x2146);
if (ret < 0)
return ret;
ret = s5c73m3_write(state, 0x30100010, 0x230c);
if (ret < 0)
return ret;
usleep_range(200, 250);
/* Check SPI status */
ret = s5c73m3_system_status_wait(state, 0x230e, 100, 300);
if (ret < 0)
v4l2_err(sd, "SPI not ready: %d\n", ret);
/* ARM reset */
ret = s5c73m3_write(state, 0x30000004, 0xfffd);
if (ret < 0)
return ret;
/* Remap */
ret = s5c73m3_write(state, 0x301000a4, 0x0183);
if (ret < 0)
return ret;
s5c73m3_set_timing_register_for_vdd(state);
ret = s5c73m3_read_fw_version(state);
s5c73m3_set_fw_file_version(state);
return ret;
}
static int s5c73m3_rom_boot(struct s5c73m3 *state, bool load_fw)
{
static const u32 boot_regs[][2] = {
{ 0x3100010c, 0x0044 },
{ 0x31000108, 0x000d },
{ 0x31000304, 0x0001 },
{ 0x00010000, 0x5800 },
{ 0x00010002, 0x0002 },
{ 0x31000000, 0x0001 },
{ 0x30100014, 0x1b85 },
{ 0x30100010, 0x230c }
};
struct v4l2_subdev *sd = &state->sensor_sd;
int i, ret;
/* Run ARM MCU */
ret = s5c73m3_write(state, 0x30000004, 0xffff);
if (ret < 0)
return ret;
usleep_range(400, 450);
/* Check booting status */
ret = s5c73m3_system_status_wait(state, 0x0c, 100, 4);
if (ret < 0) {
v4l2_err(sd, "Booting failed: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(boot_regs); i++) {
ret = s5c73m3_write(state, boot_regs[i][0], boot_regs[i][1]);
if (ret < 0)
return ret;
}
msleep(200);
/* Check the binary read status */
ret = s5c73m3_system_status_wait(state, 0x230e, 1000, 150);
if (ret < 0) {
v4l2_err(sd, "Binary read failed: %d\n", ret);
return ret;
}
/* ARM reset */
ret = s5c73m3_write(state, 0x30000004, 0xfffd);
if (ret < 0)
return ret;
/* Remap */
ret = s5c73m3_write(state, 0x301000a4, 0x0183);
if (ret < 0)
return ret;
/* MCU re-start */
ret = s5c73m3_write(state, 0x30000004, 0xffff);
if (ret < 0)
return ret;
state->isp_ready = 1;
return s5c73m3_read_fw_version(state);
}
static int s5c73m3_isp_init(struct s5c73m3 *state)
{
int ret;
state->i2c_read_address = 0;
state->i2c_write_address = 0;
ret = s5c73m3_i2c_write(state->i2c_client, AHB_MSB_ADDR_PTR, 0x3310);
if (ret < 0)
return ret;
if (boot_from_rom)
return s5c73m3_rom_boot(state, true);
else
return s5c73m3_spi_boot(state, true);
}
static const struct s5c73m3_frame_size *s5c73m3_find_frame_size(
struct v4l2_mbus_framefmt *fmt,
enum s5c73m3_resolution_types idx)
{
const struct s5c73m3_frame_size *fs;
const struct s5c73m3_frame_size *best_fs;
int best_dist = INT_MAX;
int i;
fs = s5c73m3_resolutions[idx];
best_fs = NULL;
for (i = 0; i < s5c73m3_resolutions_len[idx]; ++i) {
int dist = abs(fs->width - fmt->width) +
abs(fs->height - fmt->height);
if (dist < best_dist) {
best_dist = dist;
best_fs = fs;
}
++fs;
}
return best_fs;
}
static void s5c73m3_oif_try_format(struct s5c73m3 *state,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt,
const struct s5c73m3_frame_size **fs)
{
struct v4l2_subdev *sd = &state->sensor_sd;
u32 code;
switch (fmt->pad) {
case OIF_ISP_PAD:
*fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP);
code = S5C73M3_ISP_FMT;
break;
case OIF_JPEG_PAD:
*fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG);
code = S5C73M3_JPEG_FMT;
break;
case OIF_SOURCE_PAD:
default:
if (fmt->format.code == S5C73M3_JPEG_FMT)
code = S5C73M3_JPEG_FMT;
else
code = S5C73M3_ISP_FMT;
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
*fs = state->oif_pix_size[RES_ISP];
else
*fs = s5c73m3_find_frame_size(
v4l2_subdev_get_try_format(sd, sd_state,
OIF_ISP_PAD),
RES_ISP);
break;
}
s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code);
}
static void s5c73m3_try_format(struct s5c73m3 *state,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt,
const struct s5c73m3_frame_size **fs)
{
u32 code;
if (fmt->pad == S5C73M3_ISP_PAD) {
*fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP);
code = S5C73M3_ISP_FMT;
} else {
*fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG);
code = S5C73M3_JPEG_FMT;
}
s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code);
}
static int s5c73m3_oif_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *fi)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
if (fi->pad != OIF_SOURCE_PAD)
return -EINVAL;
mutex_lock(&state->lock);
fi->interval = state->fiv->interval;
mutex_unlock(&state->lock);
return 0;
}
static int __s5c73m3_set_frame_interval(struct s5c73m3 *state,
struct v4l2_subdev_frame_interval *fi)
{
const struct s5c73m3_frame_size *prev_size =
state->sensor_pix_size[RES_ISP];
const struct s5c73m3_interval *fiv = &s5c73m3_intervals[0];
unsigned int ret, min_err = UINT_MAX;
unsigned int i, fr_time;
if (fi->interval.denominator == 0)
return -EINVAL;
fr_time = fi->interval.numerator * 1000 / fi->interval.denominator;
for (i = 0; i < ARRAY_SIZE(s5c73m3_intervals); i++) {
const struct s5c73m3_interval *iv = &s5c73m3_intervals[i];
if (prev_size->width > iv->size.width ||
prev_size->height > iv->size.height)
continue;
ret = abs(iv->interval.numerator / 1000 - fr_time);
if (ret < min_err) {
fiv = iv;
min_err = ret;
}
}
state->fiv = fiv;
v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
"Changed frame interval to %u us\n", fiv->interval.numerator);
return 0;
}
static int s5c73m3_oif_s_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *fi)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
int ret;
if (fi->pad != OIF_SOURCE_PAD)
return -EINVAL;
v4l2_dbg(1, s5c73m3_dbg, sd, "Setting %d/%d frame interval\n",
fi->interval.numerator, fi->interval.denominator);
mutex_lock(&state->lock);
ret = __s5c73m3_set_frame_interval(state, fi);
if (!ret) {
if (state->streaming)
ret = s5c73m3_set_frame_rate(state);
else
state->apply_fiv = 1;
}
mutex_unlock(&state->lock);
return ret;
}
static int s5c73m3_oif_enum_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval_enum *fie)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
const struct s5c73m3_interval *fi;
int ret = 0;
if (fie->pad != OIF_SOURCE_PAD)
return -EINVAL;
if (fie->index >= ARRAY_SIZE(s5c73m3_intervals))
return -EINVAL;
mutex_lock(&state->lock);
fi = &s5c73m3_intervals[fie->index];
if (fie->width > fi->size.width || fie->height > fi->size.height)
ret = -EINVAL;
else
fie->interval = fi->interval;
mutex_unlock(&state->lock);
return ret;
}
static int s5c73m3_oif_get_pad_code(int pad, int index)
{
if (pad == OIF_SOURCE_PAD) {
if (index > 1)
return -EINVAL;
return (index == 0) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT;
}
if (index > 0)
return -EINVAL;
return (pad == OIF_ISP_PAD) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT;
}
static int s5c73m3_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
const struct s5c73m3_frame_size *fs;
u32 code;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
fmt->format = *v4l2_subdev_get_try_format(sd, sd_state,
fmt->pad);
return 0;
}
mutex_lock(&state->lock);
switch (fmt->pad) {
case S5C73M3_ISP_PAD:
code = S5C73M3_ISP_FMT;
fs = state->sensor_pix_size[RES_ISP];
break;
case S5C73M3_JPEG_PAD:
code = S5C73M3_JPEG_FMT;
fs = state->sensor_pix_size[RES_JPEG];
break;
default:
mutex_unlock(&state->lock);
return -EINVAL;
}
s5c73m3_fill_mbus_fmt(&fmt->format, fs, code);
mutex_unlock(&state->lock);
return 0;
}
static int s5c73m3_oif_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
const struct s5c73m3_frame_size *fs;
u32 code;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
fmt->format = *v4l2_subdev_get_try_format(sd, sd_state,
fmt->pad);
return 0;
}
mutex_lock(&state->lock);
switch (fmt->pad) {
case OIF_ISP_PAD:
code = S5C73M3_ISP_FMT;
fs = state->oif_pix_size[RES_ISP];
break;
case OIF_JPEG_PAD:
code = S5C73M3_JPEG_FMT;
fs = state->oif_pix_size[RES_JPEG];
break;
case OIF_SOURCE_PAD:
code = state->mbus_code;
fs = state->oif_pix_size[RES_ISP];
break;
default:
mutex_unlock(&state->lock);
return -EINVAL;
}
s5c73m3_fill_mbus_fmt(&fmt->format, fs, code);
mutex_unlock(&state->lock);
return 0;
}
static int s5c73m3_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
const struct s5c73m3_frame_size *frame_size = NULL;
struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
struct v4l2_mbus_framefmt *mf;
int ret = 0;
mutex_lock(&state->lock);
s5c73m3_try_format(state, sd_state, fmt, &frame_size);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
*mf = fmt->format;
} else {
switch (fmt->pad) {
case S5C73M3_ISP_PAD:
state->sensor_pix_size[RES_ISP] = frame_size;
break;
case S5C73M3_JPEG_PAD:
state->sensor_pix_size[RES_JPEG] = frame_size;
break;
default:
ret = -EBUSY;
}
if (state->streaming)
ret = -EBUSY;
else
state->apply_fmt = 1;
}
mutex_unlock(&state->lock);
return ret;
}
static int s5c73m3_oif_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
const struct s5c73m3_frame_size *frame_size = NULL;
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
struct v4l2_mbus_framefmt *mf;
int ret = 0;
mutex_lock(&state->lock);
s5c73m3_oif_try_format(state, sd_state, fmt, &frame_size);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
*mf = fmt->format;
if (fmt->pad == OIF_ISP_PAD) {
mf = v4l2_subdev_get_try_format(sd, sd_state,
OIF_SOURCE_PAD);
mf->width = fmt->format.width;
mf->height = fmt->format.height;
}
} else {
switch (fmt->pad) {
case OIF_ISP_PAD:
state->oif_pix_size[RES_ISP] = frame_size;
break;
case OIF_JPEG_PAD:
state->oif_pix_size[RES_JPEG] = frame_size;
break;
case OIF_SOURCE_PAD:
state->mbus_code = fmt->format.code;
break;
default:
ret = -EBUSY;
}
if (state->streaming)
ret = -EBUSY;
else
state->apply_fmt = 1;
}
mutex_unlock(&state->lock);
return ret;
}
static int s5c73m3_oif_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
struct v4l2_mbus_frame_desc *fd)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
int i;
if (pad != OIF_SOURCE_PAD || fd == NULL)
return -EINVAL;
mutex_lock(&state->lock);
fd->num_entries = 2;
for (i = 0; i < fd->num_entries; i++)
fd->entry[i] = state->frame_desc.entry[i];
mutex_unlock(&state->lock);
return 0;
}
static int s5c73m3_oif_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
struct v4l2_mbus_frame_desc *fd)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
struct v4l2_mbus_frame_desc *frame_desc = &state->frame_desc;
int i;
if (pad != OIF_SOURCE_PAD || fd == NULL)
return -EINVAL;
fd->entry[0].length = 10 * SZ_1M;
fd->entry[1].length = max_t(u32, fd->entry[1].length,
S5C73M3_EMBEDDED_DATA_MAXLEN);
fd->num_entries = 2;
mutex_lock(&state->lock);
for (i = 0; i < fd->num_entries; i++)
frame_desc->entry[i] = fd->entry[i];
mutex_unlock(&state->lock);
return 0;
}
static int s5c73m3_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
static const int codes[] = {
[S5C73M3_ISP_PAD] = S5C73M3_ISP_FMT,
[S5C73M3_JPEG_PAD] = S5C73M3_JPEG_FMT};
if (code->index > 0 || code->pad >= S5C73M3_NUM_PADS)
return -EINVAL;
code->code = codes[code->pad];
return 0;
}
static int s5c73m3_oif_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
int ret;
ret = s5c73m3_oif_get_pad_code(code->pad, code->index);
if (ret < 0)
return ret;
code->code = ret;
return 0;
}
static int s5c73m3_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
int idx;
if (fse->pad == S5C73M3_ISP_PAD) {
if (fse->code != S5C73M3_ISP_FMT)
return -EINVAL;
idx = RES_ISP;
} else{
if (fse->code != S5C73M3_JPEG_FMT)
return -EINVAL;
idx = RES_JPEG;
}
if (fse->index >= s5c73m3_resolutions_len[idx])
return -EINVAL;
fse->min_width = s5c73m3_resolutions[idx][fse->index].width;
fse->max_width = fse->min_width;
fse->max_height = s5c73m3_resolutions[idx][fse->index].height;
fse->min_height = fse->max_height;
return 0;
}
static int s5c73m3_oif_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
int idx;
if (fse->pad == OIF_SOURCE_PAD) {
if (fse->index > 0)
return -EINVAL;
switch (fse->code) {
case S5C73M3_JPEG_FMT:
case S5C73M3_ISP_FMT: {
unsigned w, h;
if (fse->which == V4L2_SUBDEV_FORMAT_TRY) {
struct v4l2_mbus_framefmt *mf;
mf = v4l2_subdev_get_try_format(sd, sd_state,
OIF_ISP_PAD);
w = mf->width;
h = mf->height;
} else {
const struct s5c73m3_frame_size *fs;
fs = state->oif_pix_size[RES_ISP];
w = fs->width;
h = fs->height;
}
fse->max_width = fse->min_width = w;
fse->max_height = fse->min_height = h;
return 0;
}
default:
return -EINVAL;
}
}
if (fse->code != s5c73m3_oif_get_pad_code(fse->pad, 0))
return -EINVAL;
if (fse->pad == OIF_JPEG_PAD)
idx = RES_JPEG;
else
idx = RES_ISP;
if (fse->index >= s5c73m3_resolutions_len[idx])
return -EINVAL;
fse->min_width = s5c73m3_resolutions[idx][fse->index].width;
fse->max_width = fse->min_width;
fse->max_height = s5c73m3_resolutions[idx][fse->index].height;
fse->min_height = fse->max_height;
return 0;
}
static int s5c73m3_oif_log_status(struct v4l2_subdev *sd)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
v4l2_info(sd, "power: %d, apply_fmt: %d\n", state->power,
state->apply_fmt);
return 0;
}
static int s5c73m3_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct v4l2_mbus_framefmt *mf;
mf = v4l2_subdev_get_try_format(sd, fh->state, S5C73M3_ISP_PAD);
s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
S5C73M3_ISP_FMT);
mf = v4l2_subdev_get_try_format(sd, fh->state, S5C73M3_JPEG_PAD);
s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1],
S5C73M3_JPEG_FMT);
return 0;
}
static int s5c73m3_oif_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct v4l2_mbus_framefmt *mf;
mf = v4l2_subdev_get_try_format(sd, fh->state, OIF_ISP_PAD);
s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
S5C73M3_ISP_FMT);
mf = v4l2_subdev_get_try_format(sd, fh->state, OIF_JPEG_PAD);
s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1],
S5C73M3_JPEG_FMT);
mf = v4l2_subdev_get_try_format(sd, fh->state, OIF_SOURCE_PAD);
s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
S5C73M3_ISP_FMT);
return 0;
}
static int s5c73m3_gpio_set_value(struct s5c73m3 *priv, int id, u32 val)
{
if (!gpio_is_valid(priv->gpio[id].gpio))
return 0;
gpio_set_value(priv->gpio[id].gpio, !!val);
return 1;
}
static int s5c73m3_gpio_assert(struct s5c73m3 *priv, int id)
{
return s5c73m3_gpio_set_value(priv, id, priv->gpio[id].level);
}
static int s5c73m3_gpio_deassert(struct s5c73m3 *priv, int id)
{
return s5c73m3_gpio_set_value(priv, id, !priv->gpio[id].level);
}
static int __s5c73m3_power_on(struct s5c73m3 *state)
{
int i, ret;
for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++) {
ret = regulator_enable(state->supplies[i].consumer);
if (ret)
goto err_reg_dis;
}
ret = clk_set_rate(state->clock, state->mclk_frequency);
if (ret < 0)
goto err_reg_dis;
ret = clk_prepare_enable(state->clock);
if (ret < 0)
goto err_reg_dis;
v4l2_dbg(1, s5c73m3_dbg, &state->oif_sd, "clock frequency: %ld\n",
clk_get_rate(state->clock));
s5c73m3_gpio_deassert(state, STBY);
usleep_range(100, 200);
s5c73m3_gpio_deassert(state, RSET);
usleep_range(50, 100);
return 0;
err_reg_dis:
for (--i; i >= 0; i--)
regulator_disable(state->supplies[i].consumer);
return ret;
}
static int __s5c73m3_power_off(struct s5c73m3 *state)
{
int i, ret;
if (s5c73m3_gpio_assert(state, RSET))
usleep_range(10, 50);
if (s5c73m3_gpio_assert(state, STBY))
usleep_range(100, 200);
clk_disable_unprepare(state->clock);
state->streaming = 0;
state->isp_ready = 0;
for (i = S5C73M3_MAX_SUPPLIES - 1; i >= 0; i--) {
ret = regulator_disable(state->supplies[i].consumer);
if (ret)
goto err;
}
return 0;
err:
for (++i; i < S5C73M3_MAX_SUPPLIES; i++) {
int r = regulator_enable(state->supplies[i].consumer);
if (r < 0)
v4l2_err(&state->oif_sd, "Failed to re-enable %s: %d\n",
state->supplies[i].supply, r);
}
clk_prepare_enable(state->clock);
return ret;
}
static int s5c73m3_oif_set_power(struct v4l2_subdev *sd, int on)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
int ret = 0;
mutex_lock(&state->lock);
if (on && !state->power) {
ret = __s5c73m3_power_on(state);
if (!ret)
ret = s5c73m3_isp_init(state);
if (!ret) {
state->apply_fiv = 1;
state->apply_fmt = 1;
}
} else if (state->power == !on) {
ret = s5c73m3_set_af_softlanding(state);
if (!ret)
ret = __s5c73m3_power_off(state);
else
v4l2_err(sd, "Soft landing lens failed\n");
}
if (!ret)
state->power += on ? 1 : -1;
v4l2_dbg(1, s5c73m3_dbg, sd, "%s: power: %d\n",
__func__, state->power);
mutex_unlock(&state->lock);
return ret;
}
static int s5c73m3_oif_registered(struct v4l2_subdev *sd)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
int ret;
ret = v4l2_device_register_subdev(sd->v4l2_dev, &state->sensor_sd);
if (ret) {
v4l2_err(sd->v4l2_dev, "Failed to register %s\n",
state->oif_sd.name);
return ret;
}
ret = media_create_pad_link(&state->sensor_sd.entity,
S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD,
MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
ret = media_create_pad_link(&state->sensor_sd.entity,
S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD,
MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
return ret;
}
static void s5c73m3_oif_unregistered(struct v4l2_subdev *sd)
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
v4l2_device_unregister_subdev(&state->sensor_sd);
}
static const struct v4l2_subdev_internal_ops s5c73m3_internal_ops = {
.open = s5c73m3_open,
};
static const struct v4l2_subdev_pad_ops s5c73m3_pad_ops = {
.enum_mbus_code = s5c73m3_enum_mbus_code,
.enum_frame_size = s5c73m3_enum_frame_size,
.get_fmt = s5c73m3_get_fmt,
.set_fmt = s5c73m3_set_fmt,
};
static const struct v4l2_subdev_ops s5c73m3_subdev_ops = {
.pad = &s5c73m3_pad_ops,
};
static const struct v4l2_subdev_internal_ops oif_internal_ops = {
.registered = s5c73m3_oif_registered,
.unregistered = s5c73m3_oif_unregistered,
.open = s5c73m3_oif_open,
};
static const struct v4l2_subdev_pad_ops s5c73m3_oif_pad_ops = {
.enum_mbus_code = s5c73m3_oif_enum_mbus_code,
.enum_frame_size = s5c73m3_oif_enum_frame_size,
.enum_frame_interval = s5c73m3_oif_enum_frame_interval,
.get_fmt = s5c73m3_oif_get_fmt,
.set_fmt = s5c73m3_oif_set_fmt,
.get_frame_desc = s5c73m3_oif_get_frame_desc,
.set_frame_desc = s5c73m3_oif_set_frame_desc,
};
static const struct v4l2_subdev_core_ops s5c73m3_oif_core_ops = {
.s_power = s5c73m3_oif_set_power,
.log_status = s5c73m3_oif_log_status,
};
static const struct v4l2_subdev_video_ops s5c73m3_oif_video_ops = {
.s_stream = s5c73m3_oif_s_stream,
.g_frame_interval = s5c73m3_oif_g_frame_interval,
.s_frame_interval = s5c73m3_oif_s_frame_interval,
};
static const struct v4l2_subdev_ops oif_subdev_ops = {
.core = &s5c73m3_oif_core_ops,
.pad = &s5c73m3_oif_pad_ops,
.video = &s5c73m3_oif_video_ops,
};
static int s5c73m3_configure_gpios(struct s5c73m3 *state)
{
static const char * const gpio_names[] = {
"S5C73M3_STBY", "S5C73M3_RST"
};
struct i2c_client *c = state->i2c_client;
struct s5c73m3_gpio *g = state->gpio;
int ret, i;
for (i = 0; i < GPIO_NUM; ++i) {
unsigned int flags = GPIOF_DIR_OUT;
if (g[i].level)
flags |= GPIOF_INIT_HIGH;
ret = devm_gpio_request_one(&c->dev, g[i].gpio, flags,
gpio_names[i]);
if (ret) {
v4l2_err(c, "failed to request gpio %s\n",
gpio_names[i]);
return ret;
}
}
return 0;
}
static int s5c73m3_parse_gpios(struct s5c73m3 *state)
{
static const char * const prop_names[] = {
"standby-gpios", "xshutdown-gpios",
};
struct device *dev = &state->i2c_client->dev;
struct device_node *node = dev->of_node;
int ret, i;
for (i = 0; i < GPIO_NUM; ++i) {
enum of_gpio_flags of_flags;
ret = of_get_named_gpio_flags(node, prop_names[i],
0, &of_flags);
if (ret < 0) {
dev_err(dev, "failed to parse %s DT property\n",
prop_names[i]);
return -EINVAL;
}
state->gpio[i].gpio = ret;
state->gpio[i].level = !(of_flags & OF_GPIO_ACTIVE_LOW);
}
return 0;
}
static int s5c73m3_get_platform_data(struct s5c73m3 *state)
{
struct device *dev = &state->i2c_client->dev;
const struct s5c73m3_platform_data *pdata = dev->platform_data;
struct device_node *node = dev->of_node;
struct device_node *node_ep;
struct v4l2_fwnode_endpoint ep = { .bus_type = 0 };
int ret;
if (!node) {
if (!pdata) {
dev_err(dev, "Platform data not specified\n");
return -EINVAL;
}
state->mclk_frequency = pdata->mclk_frequency;
state->gpio[STBY] = pdata->gpio_stby;
state->gpio[RSET] = pdata->gpio_reset;
return 0;
}
state->clock = devm_clk_get(dev, S5C73M3_CLK_NAME);
if (IS_ERR(state->clock))
return PTR_ERR(state->clock);
if (of_property_read_u32(node, "clock-frequency",
&state->mclk_frequency)) {
state->mclk_frequency = S5C73M3_DEFAULT_MCLK_FREQ;
dev_info(dev, "using default %u Hz clock frequency\n",
state->mclk_frequency);
}
ret = s5c73m3_parse_gpios(state);
if (ret < 0)
return -EINVAL;
node_ep = of_graph_get_next_endpoint(node, NULL);
if (!node_ep) {
dev_warn(dev, "no endpoint defined for node: %pOF\n", node);
return 0;
}
ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(node_ep), &ep);
of_node_put(node_ep);
if (ret)
return ret;
if (ep.bus_type != V4L2_MBUS_CSI2_DPHY) {
dev_err(dev, "unsupported bus type\n");
return -EINVAL;
}
/*
* Number of MIPI CSI-2 data lanes is currently not configurable,
* always a default value of 4 lanes is used.
*/
if (ep.bus.mipi_csi2.num_data_lanes != S5C73M3_MIPI_DATA_LANES)
dev_info(dev, "falling back to 4 MIPI CSI-2 data lanes\n");
return 0;
}
static int s5c73m3_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct v4l2_subdev *sd;
struct v4l2_subdev *oif_sd;
struct s5c73m3 *state;
int ret, i;
state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
if (!state)
return -ENOMEM;
state->i2c_client = client;
ret = s5c73m3_get_platform_data(state);
if (ret < 0)
return ret;
mutex_init(&state->lock);
sd = &state->sensor_sd;
oif_sd = &state->oif_sd;
v4l2_subdev_init(sd, &s5c73m3_subdev_ops);
sd->owner = client->dev.driver->owner;
v4l2_set_subdevdata(sd, state);
strscpy(sd->name, "S5C73M3", sizeof(sd->name));
sd->internal_ops = &s5c73m3_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE;
state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, S5C73M3_NUM_PADS,
state->sensor_pads);
if (ret < 0)
return ret;
v4l2_i2c_subdev_init(oif_sd, client, &oif_subdev_ops);
/* Static name; NEVER use in new drivers! */
strscpy(oif_sd->name, "S5C73M3-OIF", sizeof(oif_sd->name));
oif_sd->internal_ops = &oif_internal_ops;
oif_sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK;
state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK;
state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE;
oif_sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
ret = media_entity_pads_init(&oif_sd->entity, OIF_NUM_PADS,
state->oif_pads);
if (ret < 0)
return ret;
ret = s5c73m3_configure_gpios(state);
if (ret)
goto out_err;
for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++)
state->supplies[i].supply = s5c73m3_supply_names[i];
ret = devm_regulator_bulk_get(dev, S5C73M3_MAX_SUPPLIES,
state->supplies);
if (ret) {
dev_err(dev, "failed to get regulators\n");
goto out_err;
}
ret = s5c73m3_init_controls(state);
if (ret)
goto out_err;
state->sensor_pix_size[RES_ISP] = &s5c73m3_isp_resolutions[1];
state->sensor_pix_size[RES_JPEG] = &s5c73m3_jpeg_resolutions[1];
state->oif_pix_size[RES_ISP] = state->sensor_pix_size[RES_ISP];
state->oif_pix_size[RES_JPEG] = state->sensor_pix_size[RES_JPEG];
state->mbus_code = S5C73M3_ISP_FMT;
state->fiv = &s5c73m3_intervals[S5C73M3_DEFAULT_FRAME_INTERVAL];
state->fw_file_version[0] = 'G';
state->fw_file_version[1] = 'C';
ret = s5c73m3_register_spi_driver(state);
if (ret < 0)
goto out_err;
oif_sd->dev = dev;
ret = __s5c73m3_power_on(state);
if (ret < 0)
goto out_err1;
ret = s5c73m3_get_fw_version(state);
__s5c73m3_power_off(state);
if (ret < 0) {
dev_err(dev, "Device detection failed: %d\n", ret);
goto out_err1;
}
ret = v4l2_async_register_subdev(oif_sd);
if (ret < 0)
goto out_err1;
v4l2_info(sd, "%s: completed successfully\n", __func__);
return 0;
out_err1:
s5c73m3_unregister_spi_driver(state);
out_err:
media_entity_cleanup(&sd->entity);
return ret;
}
static int s5c73m3_remove(struct i2c_client *client)
{
struct v4l2_subdev *oif_sd = i2c_get_clientdata(client);
struct s5c73m3 *state = oif_sd_to_s5c73m3(oif_sd);
struct v4l2_subdev *sensor_sd = &state->sensor_sd;
v4l2_async_unregister_subdev(oif_sd);
v4l2_ctrl_handler_free(oif_sd->ctrl_handler);
media_entity_cleanup(&oif_sd->entity);
v4l2_device_unregister_subdev(sensor_sd);
media_entity_cleanup(&sensor_sd->entity);
s5c73m3_unregister_spi_driver(state);
return 0;
}
static const struct i2c_device_id s5c73m3_id[] = {
{ DRIVER_NAME, 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, s5c73m3_id);
#ifdef CONFIG_OF
static const struct of_device_id s5c73m3_of_match[] = {
{ .compatible = "samsung,s5c73m3" },
{ }
};
MODULE_DEVICE_TABLE(of, s5c73m3_of_match);
#endif
static struct i2c_driver s5c73m3_i2c_driver = {
.driver = {
.of_match_table = of_match_ptr(s5c73m3_of_match),
.name = DRIVER_NAME,
},
.probe_new = s5c73m3_probe,
.remove = s5c73m3_remove,
.id_table = s5c73m3_id,
};
module_i2c_driver(s5c73m3_i2c_driver);
MODULE_DESCRIPTION("Samsung S5C73M3 camera driver");
MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
MODULE_LICENSE("GPL");
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