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CoolPi-Armbian-Rockchip-RK3.../drivers/media/i2c/max96714.c

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// SPDX-License-Identifier: GPL-2.0
/*
* max96714 GMSL2/GMSL1 to CSI-2 Deserializer driver
*
* Copyright (C) 2022 Rockchip Electronics Co., Ltd.
*
* V0.0X01.0X00 first version.
*
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/sysfs.h>
#include <linux/slab.h>
#include <linux/version.h>
#include <linux/compat.h>
#include <linux/rk-camera-module.h>
#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#include <linux/pinctrl/consumer.h>
#include "max96714.h"
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x00)
#ifndef V4L2_CID_DIGITAL_GAIN
#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
#endif
#define MAX96714_LINK_FREQ_150MHZ 150000000UL
/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
#define MAX96714_PIXEL_RATE (MAX96714_LINK_FREQ_150MHZ * 2LL * 4LL / 8LL)
#define MAX96714_XVCLK_FREQ 24000000
#define CHIP_ID 0xC9
#define MAX96714_REG_CHIP_ID 0x0D
#define MAX96714_REG_CTRL_MODE 0x0313
#define MAX96714_MODE_SW_STANDBY 0x0
#define MAX96714_MODE_STREAMING BIT(1)
#define REG_NULL 0xFFFF
#define MAX96714_LANES 4
#define MAX96714_BITS_PER_SAMPLE 8
#define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default"
#define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep"
#define MAX96714_REG_VALUE_08BIT 1
#define MAX96714_REG_VALUE_16BIT 2
#define MAX96714_REG_VALUE_24BIT 3
#define MAX96714_NAME "max96714"
#define MAX96714_MEDIA_BUS_FMT MEDIA_BUS_FMT_UYVY8_2X8
static const char * const max96714_supply_names[] = {
"avdd", /* Analog power */
"dovdd", /* Digital I/O power */
"dvdd", /* Digital core power */
};
#define MAX96714_NUM_SUPPLIES ARRAY_SIZE(max96714_supply_names)
struct regval {
u16 i2c_addr;
u16 addr;
u8 val;
u16 delay;
};
struct max96714_mode {
u32 width;
u32 height;
struct v4l2_fract max_fps;
u32 hts_def;
u32 vts_def;
u32 exp_def;
u32 link_freq_idx;
u32 bpp;
const struct regval *reg_list;
};
struct max96714 {
struct i2c_client *client;
struct clk *xvclk;
struct gpio_desc *power_gpio;
struct gpio_desc *reset_gpio;
struct gpio_desc *pwdn_gpio;
struct regulator_bulk_data supplies[MAX96714_NUM_SUPPLIES];
struct pinctrl *pinctrl;
struct pinctrl_state *pins_default;
struct pinctrl_state *pins_sleep;
struct v4l2_subdev subdev;
struct media_pad pad;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *exposure;
struct v4l2_ctrl *anal_gain;
struct v4l2_ctrl *digi_gain;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *test_pattern;
struct mutex mutex;
bool streaming;
bool power_on;
bool hot_plug;
u8 is_reset;
const struct max96714_mode *cur_mode;
u32 module_index;
const char *module_facing;
const char *module_name;
const char *len_name;
};
#define to_max96714(sd) container_of(sd, struct max96714, subdev)
static const struct regval max96714_mipi_1080p_30fps[] = {
{0x4C, 0x0313, 0x00, 0x00},
{0x4C, 0x0001, 0x01, 0x00},
{0x4C, 0x0010, 0x21, 0x00},
{0x4C, 0x0320, 0x23, 0x00},
{0x4C, 0x0325, 0x80, 0x00},
{0x4C, 0x0313, 0x00, 0x00},
{0x4C, REG_NULL, 0x00, 0x00},
};
static const struct max96714_mode supported_modes[] = {
{
.width = 1920,
.height = 1080,
.max_fps = {
.numerator = 10000,
.denominator = 300000,
},
.reg_list = max96714_mipi_1080p_30fps,
.link_freq_idx = 0,
},
};
static const s64 link_freq_items[] = {
MAX96714_LINK_FREQ_150MHZ,
};
/* Write registers up to 4 at a time */
static int max96714_write_reg(struct i2c_client *client, u16 reg,
u32 len, u32 val)
{
u32 buf_i, val_i;
u8 buf[6];
u8 *val_p;
__be32 val_be;
dev_dbg(&client->dev, "write reg(0x%x val:0x%x)!\n", reg, val);
if (len > 4)
return -EINVAL;
buf[0] = reg >> 8;
buf[1] = reg & 0xff;
val_be = cpu_to_be32(val);
val_p = (u8 *)&val_be;
buf_i = 2;
val_i = 4 - len;
while (val_i < 4)
buf[buf_i++] = val_p[val_i++];
if (i2c_master_send(client, buf, len + 2) != len + 2)
return -EIO;
return 0;
}
static int max96714_write_array(struct i2c_client *client,
const struct regval *regs)
{
u32 i;
int ret = 0;
for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) {
client->addr = regs[i].i2c_addr;
ret = max96714_write_reg(client, regs[i].addr,
MAX96714_REG_VALUE_08BIT,
regs[i].val);
msleep(regs[i].delay);
}
return ret;
}
/* Read registers up to 4 at a time */
static int max96714_read_reg(struct i2c_client *client, u16 reg,
unsigned int len, u32 *val)
{
struct i2c_msg msgs[2];
u8 *data_be_p;
__be32 data_be = 0;
__be16 reg_addr_be = cpu_to_be16(reg);
int ret;
if (len > 4 || !len)
return -EINVAL;
data_be_p = (u8 *)&data_be;
/* Write register address */
msgs[0].addr = client->addr;
msgs[0].flags = 0;
msgs[0].len = 2;
msgs[0].buf = (u8 *)&reg_addr_be;
/* Read data from register */
msgs[1].addr = client->addr;
msgs[1].flags = I2C_M_RD;
msgs[1].len = len;
msgs[1].buf = &data_be_p[4 - len];
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret != ARRAY_SIZE(msgs))
return -EIO;
*val = be32_to_cpu(data_be);
return 0;
}
static int max96714_get_reso_dist(const struct max96714_mode *mode,
struct v4l2_mbus_framefmt *framefmt)
{
return abs(mode->width - framefmt->width) +
abs(mode->height - framefmt->height);
}
static const struct max96714_mode *
max96714_find_best_fit(struct v4l2_subdev_format *fmt)
{
struct v4l2_mbus_framefmt *framefmt = &fmt->format;
int dist;
int cur_best_fit = 0;
int cur_best_fit_dist = -1;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
dist = max96714_get_reso_dist(&supported_modes[i], framefmt);
if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) {
cur_best_fit_dist = dist;
cur_best_fit = i;
}
}
return &supported_modes[cur_best_fit];
}
static int max96714_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct max96714 *max96714 = to_max96714(sd);
const struct max96714_mode *mode;
mutex_lock(&max96714->mutex);
mode = max96714_find_best_fit(fmt);
fmt->format.code = MAX96714_MEDIA_BUS_FMT;
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.field = V4L2_FIELD_NONE;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
*v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format;
#else
mutex_unlock(&max96714->mutex);
return -ENOTTY;
#endif
} else {
if (max96714->streaming) {
mutex_unlock(&max96714->mutex);
return -EBUSY;
}
}
mutex_unlock(&max96714->mutex);
return 0;
}
static int max96714_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct max96714 *max96714 = to_max96714(sd);
const struct max96714_mode *mode = max96714->cur_mode;
mutex_lock(&max96714->mutex);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
fmt->format = *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
#else
mutex_unlock(&max96714->mutex);
return -ENOTTY;
#endif
} else {
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = MAX96714_MEDIA_BUS_FMT;
fmt->format.field = V4L2_FIELD_NONE;
}
mutex_unlock(&max96714->mutex);
return 0;
}
static int max96714_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index != 0)
return -EINVAL;
code->code = MAX96714_MEDIA_BUS_FMT;
return 0;
}
static int max96714_enum_frame_sizes(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
if (fse->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
if (fse->code != MAX96714_MEDIA_BUS_FMT)
return -EINVAL;
fse->min_width = supported_modes[fse->index].width;
fse->max_width = supported_modes[fse->index].width;
fse->max_height = supported_modes[fse->index].height;
fse->min_height = supported_modes[fse->index].height;
return 0;
}
static int max96714_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *fi)
{
struct max96714 *max96714 = to_max96714(sd);
const struct max96714_mode *mode = max96714->cur_mode;
mutex_lock(&max96714->mutex);
fi->interval = mode->max_fps;
mutex_unlock(&max96714->mutex);
return 0;
}
static void max96714_get_module_inf(struct max96714 *max96714,
struct rkmodule_inf *inf)
{
memset(inf, 0, sizeof(*inf));
strscpy(inf->base.sensor, MAX96714_NAME, sizeof(inf->base.sensor));
strscpy(inf->base.module, max96714->module_name,
sizeof(inf->base.module));
strscpy(inf->base.lens, max96714->len_name, sizeof(inf->base.lens));
}
static void max96714_get_vicap_rst_inf(struct max96714 *max96714,
struct rkmodule_vicap_reset_info *rst_info)
{
struct i2c_client *client = max96714->client;
rst_info->is_reset = max96714->hot_plug;
max96714->hot_plug = false;
rst_info->src = RKCIF_RESET_SRC_ERR_HOTPLUG;
dev_info(&client->dev, "%s: rst_info->is_reset:%d.\n", __func__, rst_info->is_reset);
}
static void max96714_set_vicap_rst_inf(struct max96714 *max96714,
struct rkmodule_vicap_reset_info rst_info)
{
max96714->is_reset = rst_info.is_reset;
}
static long max96714_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct max96714 *max96714 = to_max96714(sd);
long ret = 0;
u32 stream = 0;
switch (cmd) {
case RKMODULE_GET_MODULE_INFO:
max96714_get_module_inf(max96714, (struct rkmodule_inf *)arg);
break;
case RKMODULE_SET_QUICK_STREAM:
stream = *((u32 *)arg);
if (stream)
ret = max96714_write_reg(max96714->client,
MAX96714_REG_CTRL_MODE,
MAX96714_REG_VALUE_08BIT,
MAX96714_MODE_STREAMING);
else
ret = max96714_write_reg(max96714->client,
MAX96714_REG_CTRL_MODE,
MAX96714_REG_VALUE_08BIT,
MAX96714_MODE_SW_STANDBY);
break;
case RKMODULE_GET_VICAP_RST_INFO:
max96714_get_vicap_rst_inf(max96714,
(struct rkmodule_vicap_reset_info *)arg);
break;
case RKMODULE_SET_VICAP_RST_INFO:
max96714_set_vicap_rst_inf(max96714,
*(struct rkmodule_vicap_reset_info *)arg);
break;
case RKMODULE_GET_START_STREAM_SEQ:
// +*(int *)arg = RKMODULE_START_STREAM_FRONT;
// *(int *)arg = RKMODULE_START_STREAM_BEHIND;
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
#ifdef CONFIG_COMPAT
static long max96714_compat_ioctl32(struct v4l2_subdev *sd,
unsigned int cmd, unsigned long arg)
{
void __user *up = compat_ptr(arg);
struct rkmodule_inf *inf;
struct rkmodule_awb_cfg *cfg;
struct rkmodule_vicap_reset_info *vicap_rst_inf;
long ret = 0;
int *seq;
u32 stream = 0;
switch (cmd) {
case RKMODULE_GET_MODULE_INFO:
inf = kzalloc(sizeof(*inf), GFP_KERNEL);
if (!inf) {
ret = -ENOMEM;
return ret;
}
ret = max96714_ioctl(sd, cmd, inf);
if (!ret) {
ret = copy_to_user(up, inf, sizeof(*inf));
if (ret)
ret = -EFAULT;
}
kfree(inf);
break;
case RKMODULE_AWB_CFG:
cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
if (!cfg) {
ret = -ENOMEM;
return ret;
}
ret = copy_from_user(cfg, up, sizeof(*cfg));
if (!ret)
ret = max96714_ioctl(sd, cmd, cfg);
else
ret = -EFAULT;
kfree(cfg);
break;
case RKMODULE_GET_VICAP_RST_INFO:
vicap_rst_inf = kzalloc(sizeof(*vicap_rst_inf), GFP_KERNEL);
if (!vicap_rst_inf) {
ret = -ENOMEM;
return ret;
}
ret = max96714_ioctl(sd, cmd, vicap_rst_inf);
if (!ret) {
ret = copy_to_user(up, vicap_rst_inf, sizeof(*vicap_rst_inf));
if (ret)
ret = -EFAULT;
}
kfree(vicap_rst_inf);
break;
case RKMODULE_SET_VICAP_RST_INFO:
vicap_rst_inf = kzalloc(sizeof(*vicap_rst_inf), GFP_KERNEL);
if (!vicap_rst_inf) {
ret = -ENOMEM;
return ret;
}
ret = copy_from_user(vicap_rst_inf, up, sizeof(*vicap_rst_inf));
if (!ret)
ret = max96714_ioctl(sd, cmd, vicap_rst_inf);
else
ret = -EFAULT;
kfree(vicap_rst_inf);
break;
case RKMODULE_GET_START_STREAM_SEQ:
seq = kzalloc(sizeof(*seq), GFP_KERNEL);
if (!seq) {
ret = -ENOMEM;
return ret;
}
ret = max96714_ioctl(sd, cmd, seq);
if (!ret) {
ret = copy_to_user(up, seq, sizeof(*seq));
if (ret)
ret = -EFAULT;
}
kfree(seq);
break;
case RKMODULE_SET_QUICK_STREAM:
ret = copy_from_user(&stream, up, sizeof(u32));
if (!ret)
ret = max96714_ioctl(sd, cmd, &stream);
else
ret = -EFAULT;
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
#endif
static int __max96714_start_stream(struct max96714 *max96714)
{
int ret;
ret = max96714_write_array(max96714->client, max96714->cur_mode->reg_list);
if (ret)
return ret;
/* In case these controls are set before streaming */
mutex_unlock(&max96714->mutex);
ret = v4l2_ctrl_handler_setup(&max96714->ctrl_handler);
mutex_lock(&max96714->mutex);
if (ret)
return ret;
return max96714_write_reg(max96714->client,
MAX96714_REG_CTRL_MODE,
MAX96714_REG_VALUE_08BIT,
MAX96714_MODE_STREAMING);
}
static int __max96714_stop_stream(struct max96714 *max96714)
{
return max96714_write_reg(max96714->client,
MAX96714_REG_CTRL_MODE,
MAX96714_REG_VALUE_08BIT,
MAX96714_MODE_SW_STANDBY);
}
static int max96714_s_stream(struct v4l2_subdev *sd, int on)
{
struct max96714 *max96714 = to_max96714(sd);
struct i2c_client *client = max96714->client;
int ret = 0;
dev_info(&client->dev, "%s: on: %d, %dx%d@%d\n", __func__, on,
max96714->cur_mode->width,
max96714->cur_mode->height,
DIV_ROUND_CLOSEST(max96714->cur_mode->max_fps.denominator,
max96714->cur_mode->max_fps.numerator));
mutex_lock(&max96714->mutex);
on = !!on;
if (on == max96714->streaming)
goto unlock_and_return;
if (on) {
ret = pm_runtime_get_sync(&client->dev);
if (ret < 0) {
pm_runtime_put_noidle(&client->dev);
goto unlock_and_return;
}
ret = __max96714_start_stream(max96714);
if (ret) {
v4l2_err(sd, "start stream failed while write regs\n");
pm_runtime_put(&client->dev);
goto unlock_and_return;
}
} else {
__max96714_stop_stream(max96714);
pm_runtime_put(&client->dev);
}
max96714->streaming = on;
unlock_and_return:
mutex_unlock(&max96714->mutex);
return ret;
}
static int max96714_s_power(struct v4l2_subdev *sd, int on)
{
struct max96714 *max96714 = to_max96714(sd);
struct i2c_client *client = max96714->client;
int ret = 0;
mutex_lock(&max96714->mutex);
/* If the power state is not modified - no work to do. */
if (max96714->power_on == !!on)
goto unlock_and_return;
if (on) {
ret = pm_runtime_get_sync(&client->dev);
if (ret < 0) {
pm_runtime_put_noidle(&client->dev);
goto unlock_and_return;
}
max96714->power_on = true;
} else {
pm_runtime_put(&client->dev);
max96714->power_on = false;
}
unlock_and_return:
mutex_unlock(&max96714->mutex);
return ret;
}
/* Calculate the delay in us by clock rate and clock cycles */
static inline u32 max96714_cal_delay(u32 cycles)
{
return DIV_ROUND_UP(cycles, MAX96714_XVCLK_FREQ / 1000 / 1000);
}
static int __max96714_power_on(struct max96714 *max96714)
{
int ret;
u32 delay_us;
struct device *dev = &max96714->client->dev;
if (!IS_ERR(max96714->power_gpio))
gpiod_set_value_cansleep(max96714->power_gpio, 1);
usleep_range(1000, 2000);
if (!IS_ERR_OR_NULL(max96714->pins_default)) {
ret = pinctrl_select_state(max96714->pinctrl,
max96714->pins_default);
if (ret < 0)
dev_err(dev, "could not set pins\n");
}
if (!IS_ERR(max96714->reset_gpio))
gpiod_set_value_cansleep(max96714->reset_gpio, 0);
ret = regulator_bulk_enable(MAX96714_NUM_SUPPLIES, max96714->supplies);
if (ret < 0) {
dev_err(dev, "Failed to enable regulators\n");
goto disable_clk;
}
if (!IS_ERR(max96714->reset_gpio))
gpiod_set_value_cansleep(max96714->reset_gpio, 1);
usleep_range(500, 1000);
if (!IS_ERR(max96714->pwdn_gpio))
gpiod_set_value_cansleep(max96714->pwdn_gpio, 1);
/* 8192 cycles prior to first SCCB transaction */
delay_us = max96714_cal_delay(8192);
usleep_range(delay_us, delay_us * 2);
return 0;
disable_clk:
clk_disable_unprepare(max96714->xvclk);
return ret;
}
static void __max96714_power_off(struct max96714 *max96714)
{
int ret;
struct device *dev = &max96714->client->dev;
if (!IS_ERR(max96714->pwdn_gpio))
gpiod_set_value_cansleep(max96714->pwdn_gpio, 0);
clk_disable_unprepare(max96714->xvclk);
if (!IS_ERR(max96714->reset_gpio))
gpiod_set_value_cansleep(max96714->reset_gpio, 0);
if (!IS_ERR_OR_NULL(max96714->pins_sleep)) {
ret = pinctrl_select_state(max96714->pinctrl,
max96714->pins_sleep);
if (ret < 0)
dev_dbg(dev, "could not set pins\n");
}
if (!IS_ERR(max96714->power_gpio))
gpiod_set_value_cansleep(max96714->power_gpio, 0);
regulator_bulk_disable(MAX96714_NUM_SUPPLIES, max96714->supplies);
}
static int max96714_runtime_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct max96714 *max96714 = to_max96714(sd);
return __max96714_power_on(max96714);
}
static int max96714_runtime_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct max96714 *max96714 = to_max96714(sd);
__max96714_power_off(max96714);
return 0;
}
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static int max96714_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct max96714 *max96714 = to_max96714(sd);
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(sd, fh->state, 0);
const struct max96714_mode *def_mode = &supported_modes[0];
mutex_lock(&max96714->mutex);
/* Initialize try_fmt */
try_fmt->width = def_mode->width;
try_fmt->height = def_mode->height;
try_fmt->code = MAX96714_MEDIA_BUS_FMT;
try_fmt->field = V4L2_FIELD_NONE;
mutex_unlock(&max96714->mutex);
/* No crop or compose */
return 0;
}
#endif
static int max96714_enum_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval_enum *fie)
{
if (fie->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
fie->code = MAX96714_MEDIA_BUS_FMT;
fie->width = supported_modes[fie->index].width;
fie->height = supported_modes[fie->index].height;
fie->interval = supported_modes[fie->index].max_fps;
return 0;
}
static int max96714_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
struct v4l2_mbus_config *config)
{
config->type = V4L2_MBUS_CSI2_DPHY;
config->flags = V4L2_MBUS_CSI2_4_LANE |
V4L2_MBUS_CSI2_CHANNEL_0 |
V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
return 0;
}
static int max96714_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct max96714 *max96714 = to_max96714(sd);
if (sel->target == V4L2_SEL_TGT_CROP_BOUNDS) {
sel->r.left = 0;
sel->r.width = max96714->cur_mode->width;
sel->r.top = 0;
sel->r.height = max96714->cur_mode->height;
return 0;
}
return -EINVAL;
}
static const struct dev_pm_ops max96714_pm_ops = {
SET_RUNTIME_PM_OPS(max96714_runtime_suspend,
max96714_runtime_resume, NULL)
};
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static const struct v4l2_subdev_internal_ops max96714_internal_ops = {
.open = max96714_open,
};
#endif
static const struct v4l2_subdev_core_ops max96714_core_ops = {
.s_power = max96714_s_power,
.ioctl = max96714_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = max96714_compat_ioctl32,
#endif
};
static const struct v4l2_subdev_video_ops max96714_video_ops = {
.s_stream = max96714_s_stream,
.g_frame_interval = max96714_g_frame_interval,
};
static const struct v4l2_subdev_pad_ops max96714_pad_ops = {
.enum_mbus_code = max96714_enum_mbus_code,
.enum_frame_size = max96714_enum_frame_sizes,
.enum_frame_interval = max96714_enum_frame_interval,
.get_fmt = max96714_get_fmt,
.set_fmt = max96714_set_fmt,
.get_selection = max96714_get_selection,
.get_mbus_config = max96714_g_mbus_config,
};
static const struct v4l2_subdev_ops max96714_subdev_ops = {
.core = &max96714_core_ops,
.video = &max96714_video_ops,
.pad = &max96714_pad_ops,
};
static int max96714_initialize_controls(struct max96714 *max96714)
{
const struct max96714_mode *mode;
struct v4l2_ctrl_handler *handler;
int ret;
handler = &max96714->ctrl_handler;
mode = max96714->cur_mode;
ret = v4l2_ctrl_handler_init(handler, 2);
if (ret)
return ret;
handler->lock = &max96714->mutex;
max96714->link_freq = v4l2_ctrl_new_int_menu(handler, NULL,
V4L2_CID_LINK_FREQ,
1, 0, link_freq_items);
max96714->pixel_rate = v4l2_ctrl_new_std(handler, NULL,
V4L2_CID_PIXEL_RATE,
0, MAX96714_PIXEL_RATE,
1, MAX96714_PIXEL_RATE);
__v4l2_ctrl_s_ctrl(max96714->link_freq,
mode->link_freq_idx);
if (handler->error) {
ret = handler->error;
dev_err(&max96714->client->dev,
"Failed to init controls(%d)\n", ret);
goto err_free_handler;
}
max96714->subdev.ctrl_handler = handler;
return 0;
err_free_handler:
v4l2_ctrl_handler_free(handler);
return ret;
}
static int max96714_check_sensor_id(struct max96714 *max96714,
struct i2c_client *client)
{
struct device *dev = &max96714->client->dev;
u32 id = 0;
int ret;
ret = max96714_read_reg(client, MAX96714_REG_CHIP_ID,
MAX96714_REG_VALUE_08BIT, &id);
if (id != CHIP_ID) {
dev_err(dev, "Unexpected sensor id(%02x), ret(%d)\n", id, ret);
return -ENODEV;
}
dev_info(dev, "Detected %02x sensor\n", CHIP_ID);
return 0;
}
static int max96714_configure_regulators(struct max96714 *max96714)
{
unsigned int i;
for (i = 0; i < MAX96714_NUM_SUPPLIES; i++)
max96714->supplies[i].supply = max96714_supply_names[i];
return devm_regulator_bulk_get(&max96714->client->dev,
MAX96714_NUM_SUPPLIES,
max96714->supplies);
}
static int max96714_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device_node *node = dev->of_node;
struct max96714 *max96714;
struct v4l2_subdev *sd;
char facing[2];
int ret;
dev_info(dev, "driver version: %02x.%02x.%02x",
DRIVER_VERSION >> 16,
(DRIVER_VERSION & 0xff00) >> 8,
DRIVER_VERSION & 0x00ff);
max96714 = devm_kzalloc(dev, sizeof(*max96714), GFP_KERNEL);
if (!max96714)
return -ENOMEM;
ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
&max96714->module_index);
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
&max96714->module_facing);
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
&max96714->module_name);
ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
&max96714->len_name);
if (ret) {
dev_err(dev, "could not get module information!\n");
return -EINVAL;
}
max96714->client = client;
max96714->cur_mode = &supported_modes[0];
max96714->power_gpio = devm_gpiod_get(dev, "power", GPIOD_OUT_LOW);
if (IS_ERR(max96714->power_gpio))
dev_warn(dev, "Failed to get power-gpios, maybe no use\n");
max96714->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(max96714->reset_gpio))
dev_warn(dev, "Failed to get reset-gpios\n");
max96714->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
if (IS_ERR(max96714->pwdn_gpio))
dev_warn(dev, "Failed to get pwdn-gpios\n");
ret = max96714_configure_regulators(max96714);
if (ret) {
dev_err(dev, "Failed to get power regulators\n");
return ret;
}
max96714->pinctrl = devm_pinctrl_get(dev);
if (!IS_ERR(max96714->pinctrl)) {
max96714->pins_default =
pinctrl_lookup_state(max96714->pinctrl,
OF_CAMERA_PINCTRL_STATE_DEFAULT);
if (IS_ERR(max96714->pins_default))
dev_err(dev, "could not get default pinstate\n");
max96714->pins_sleep =
pinctrl_lookup_state(max96714->pinctrl,
OF_CAMERA_PINCTRL_STATE_SLEEP);
if (IS_ERR(max96714->pins_sleep))
dev_err(dev, "could not get sleep pinstate\n");
}
mutex_init(&max96714->mutex);
sd = &max96714->subdev;
v4l2_i2c_subdev_init(sd, client, &max96714_subdev_ops);
ret = max96714_initialize_controls(max96714);
if (ret)
goto err_destroy_mutex;
ret = __max96714_power_on(max96714);
if (ret)
goto err_free_handler;
ret = max96714_check_sensor_id(max96714, client);
if (ret)
goto err_power_off;
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
sd->internal_ops = &max96714_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
#endif
#if defined(CONFIG_MEDIA_CONTROLLER)
max96714->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &max96714->pad);
if (ret < 0)
goto err_power_off;
#endif
memset(facing, 0, sizeof(facing));
if (strcmp(max96714->module_facing, "back") == 0)
facing[0] = 'b';
else
facing[0] = 'f';
snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
max96714->module_index, facing,
MAX96714_NAME, dev_name(sd->dev));
ret = v4l2_async_register_subdev_sensor(sd);
if (ret) {
dev_err(dev, "v4l2 async register subdev failed\n");
goto err_clean_entity;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_idle(dev);
return 0;
err_clean_entity:
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&sd->entity);
#endif
err_power_off:
__max96714_power_off(max96714);
err_free_handler:
v4l2_ctrl_handler_free(&max96714->ctrl_handler);
err_destroy_mutex:
mutex_destroy(&max96714->mutex);
return ret;
}
static void max96714_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct max96714 *max96714 = to_max96714(sd);
v4l2_async_unregister_subdev(sd);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&sd->entity);
#endif
v4l2_ctrl_handler_free(&max96714->ctrl_handler);
mutex_destroy(&max96714->mutex);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
__max96714_power_off(max96714);
pm_runtime_set_suspended(&client->dev);
}
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id max96714_of_match[] = {
{ .compatible = "maxim,max96714" },
{},
};
MODULE_DEVICE_TABLE(of, max96714_of_match);
#endif
static const struct i2c_device_id max96714_match_id[] = {
{ "maxim,max96714", 0 },
{},
};
static struct i2c_driver max96714_i2c_driver = {
.driver = {
.name = MAX96714_NAME,
.pm = &max96714_pm_ops,
.of_match_table = of_match_ptr(max96714_of_match),
},
.probe = &max96714_probe,
.remove = &max96714_remove,
.id_table = max96714_match_id,
};
int max96714_sensor_mod_init(void)
{
return i2c_add_driver(&max96714_i2c_driver);
}
#ifndef CONFIG_VIDEO_REVERSE_IMAGE
device_initcall_sync(max96714_sensor_mod_init);
#endif
static void __exit sensor_mod_exit(void)
{
i2c_del_driver(&max96714_i2c_driver);
}
module_exit(sensor_mod_exit);
MODULE_DESCRIPTION("Maxim max96714 sensor driver");
MODULE_LICENSE("GPL");
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