549 lines
12 KiB
C
549 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* adv7181 driver
|
|
*
|
|
* Copyright (C) 2018 Fuzhou Rockchip Electronics Co., Ltd.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/device.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 <media/media-entity.h>
|
|
#include <media/v4l2-async.h>
|
|
#include <media/v4l2-ctrls.h>
|
|
#include <media/v4l2-subdev.h>
|
|
|
|
#define REG_CHIP_ID 0x11
|
|
#define CHIP_ID 0x20
|
|
|
|
#define REG_SC_CTRL_MODE 0x03
|
|
#define SC_CTRL_MODE_STANDBY 0x4c
|
|
#define SC_CTRL_MODE_STREAMING 0x0c
|
|
|
|
#define REG_NULL 0xFF
|
|
|
|
#define ADV7181_XVCLK_FREQ 24000000
|
|
#define ADV7181_LANES 1
|
|
#define ADV7181_BITS_PER_SAMPLE 10
|
|
|
|
#define ADV7181_SKIP_TOP 24
|
|
|
|
static const char * const adv7181_supply_names[] = {
|
|
"dvdd",
|
|
"dvddio",
|
|
};
|
|
|
|
#define ADV7181_NUM_SUPPLIES ARRAY_SIZE(adv7181_supply_names)
|
|
|
|
struct regval {
|
|
u8 addr;
|
|
u8 val;
|
|
};
|
|
|
|
struct adv7181_mode {
|
|
u32 width;
|
|
u32 height;
|
|
const struct regval *reg_list;
|
|
};
|
|
|
|
struct adv7181 {
|
|
struct i2c_client *client;
|
|
struct clk *xvclk;
|
|
struct gpio_desc *reset_gpio;
|
|
struct regulator_bulk_data supplies[ADV7181_NUM_SUPPLIES];
|
|
|
|
bool streaming;
|
|
struct mutex mutex; /* lock to serialize v4l2 callback */
|
|
struct v4l2_subdev subdev;
|
|
struct media_pad pad;
|
|
|
|
int skip_top;
|
|
|
|
const struct adv7181_mode *cur_mode;
|
|
};
|
|
|
|
#define to_adv7181(sd) container_of(sd, struct adv7181, subdev)
|
|
|
|
/* PLL settings bases on 28M xvclk, resolution 720x480 30fps*/
|
|
static struct regval adv7181_cvbs_30fps[] = {
|
|
{0x00, 0x0B},
|
|
{0x04, 0x77},
|
|
{0x17, 0x41},
|
|
{0x1D, 0x47},
|
|
{0x31, 0x02},
|
|
{0x3A, 0x17},
|
|
{0x3B, 0x81},
|
|
{0x3D, 0xA2},
|
|
{0x3E, 0x6A},
|
|
{0x3F, 0xA0},
|
|
{0x86, 0x0B},
|
|
{0xF3, 0x01},
|
|
{0xF9, 0x03},
|
|
{0x0E, 0x80},
|
|
{0x52, 0x46},
|
|
{0x54, 0x80},
|
|
{0x7F, 0xFF},
|
|
{0x81, 0x30},
|
|
{0x90, 0xC9},
|
|
{0x91, 0x40},
|
|
{0x92, 0x3C},
|
|
{0x93, 0xCA},
|
|
{0x94, 0xD5},
|
|
{0xB1, 0xFF},
|
|
{0xB6, 0x08},
|
|
{0xC0, 0x9A},
|
|
{0xCF, 0x50},
|
|
{0xD0, 0x4E},
|
|
{0xD1, 0xB9},
|
|
{0xD6, 0xDD},
|
|
{0xD7, 0xE2},
|
|
{0xE5, 0x51},
|
|
{0xF6, 0x3B},
|
|
{0x0E, 0x00},
|
|
{0x03, 0x4C},
|
|
{REG_NULL, 0x0},
|
|
};
|
|
|
|
static const struct adv7181_mode supported_modes[] = {
|
|
{
|
|
.width = 720,
|
|
.height = 480,
|
|
.reg_list = adv7181_cvbs_30fps,
|
|
},
|
|
};
|
|
|
|
static int adv7181_write_reg(struct i2c_client *client, u8 reg, u8 val)
|
|
{
|
|
int ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(client, reg, val);
|
|
|
|
if (ret < 0)
|
|
dev_err(&client->dev, "write reg error: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int adv7181_write_array(struct i2c_client *client,
|
|
const struct regval *regs)
|
|
{
|
|
int i, ret = 0;
|
|
|
|
for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++)
|
|
ret = adv7181_write_reg(client, regs[i].addr, regs[i].val);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline u8 adv7181_read_reg(struct i2c_client *client, u8 reg)
|
|
{
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
}
|
|
|
|
static void adv7181_fill_fmt(const struct adv7181_mode *mode,
|
|
struct v4l2_mbus_framefmt *fmt)
|
|
{
|
|
fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
|
|
fmt->width = mode->width;
|
|
fmt->height = mode->height;
|
|
fmt->field = V4L2_FIELD_NONE;
|
|
fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
}
|
|
|
|
static int adv7181_set_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format;
|
|
|
|
/* only one mode supported for now */
|
|
adv7181_fill_fmt(adv7181->cur_mode, mbus_fmt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7181_get_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format;
|
|
|
|
adv7181_fill_fmt(adv7181->cur_mode, mbus_fmt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7181_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->index >= ARRAY_SIZE(supported_modes))
|
|
return -EINVAL;
|
|
|
|
code->code = MEDIA_BUS_FMT_UYVY8_2X8;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7181_enum_frame_sizes(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_frame_size_enum *fse)
|
|
{
|
|
u32 index = fse->index;
|
|
|
|
if (index >= ARRAY_SIZE(supported_modes))
|
|
return -EINVAL;
|
|
|
|
fse->code = MEDIA_BUS_FMT_UYVY8_2X8;
|
|
|
|
fse->min_width = supported_modes[index].width;
|
|
fse->max_width = supported_modes[index].width;
|
|
fse->max_height = supported_modes[index].height;
|
|
fse->min_height = supported_modes[index].height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7181_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
|
|
{
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
|
|
*lines = adv7181->skip_top;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7181_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
|
|
{
|
|
/* Only NTSC now */
|
|
*std = V4L2_STD_NTSC;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __adv7181_power_on(struct adv7181 *adv7181)
|
|
{
|
|
int ret;
|
|
struct device *dev = &adv7181->client->dev;
|
|
|
|
if (!IS_ERR(adv7181->xvclk)) {
|
|
ret = clk_prepare_enable(adv7181->xvclk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable xvclk\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
gpiod_set_value_cansleep(adv7181->reset_gpio, 1);
|
|
|
|
ret = regulator_bulk_enable(ADV7181_NUM_SUPPLIES, adv7181->supplies);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable regulators\n");
|
|
goto disable_clk;
|
|
}
|
|
|
|
gpiod_set_value_cansleep(adv7181->reset_gpio, 0);
|
|
|
|
return 0;
|
|
|
|
disable_clk:
|
|
if (!IS_ERR(adv7181->xvclk))
|
|
clk_disable_unprepare(adv7181->xvclk);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __adv7181_power_off(struct adv7181 *adv7181)
|
|
{
|
|
if (!IS_ERR(adv7181->xvclk))
|
|
clk_disable_unprepare(adv7181->xvclk);
|
|
gpiod_set_value_cansleep(adv7181->reset_gpio, 1);
|
|
regulator_bulk_disable(ADV7181_NUM_SUPPLIES, adv7181->supplies);
|
|
}
|
|
|
|
static int adv7181_s_stream(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
struct i2c_client *client = adv7181->client;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&adv7181->mutex);
|
|
|
|
on = !!on;
|
|
if (on == adv7181->streaming)
|
|
goto unlock_and_return;
|
|
|
|
if (on) {
|
|
ret = pm_runtime_get_sync(&adv7181->client->dev);
|
|
if (ret < 0) {
|
|
pm_runtime_put_noidle(&client->dev);
|
|
goto unlock_and_return;
|
|
}
|
|
|
|
ret = adv7181_write_array(adv7181->client,
|
|
adv7181->cur_mode->reg_list);
|
|
if (ret) {
|
|
pm_runtime_put(&client->dev);
|
|
goto unlock_and_return;
|
|
}
|
|
|
|
ret = adv7181_write_reg(client, REG_SC_CTRL_MODE,
|
|
SC_CTRL_MODE_STREAMING);
|
|
if (ret) {
|
|
pm_runtime_put(&client->dev);
|
|
goto unlock_and_return;
|
|
}
|
|
} else {
|
|
adv7181_write_reg(client, REG_SC_CTRL_MODE,
|
|
SC_CTRL_MODE_STANDBY);
|
|
pm_runtime_put(&client->dev);
|
|
}
|
|
|
|
adv7181->streaming = on;
|
|
|
|
unlock_and_return:
|
|
mutex_unlock(&adv7181->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
|
|
static int adv7181_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
|
|
{
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
struct v4l2_mbus_framefmt *try_fmt;
|
|
|
|
mutex_lock(&adv7181->mutex);
|
|
|
|
try_fmt = v4l2_subdev_get_try_format(sd, fh->state, 0);
|
|
/* Initialize try_fmt */
|
|
adv7181_fill_fmt(&supported_modes[0], try_fmt);
|
|
|
|
mutex_unlock(&adv7181->mutex);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int adv7181_runtime_resume(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
|
|
return __adv7181_power_on(adv7181);
|
|
}
|
|
|
|
static int adv7181_runtime_suspend(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
|
|
__adv7181_power_off(adv7181);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops adv7181_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(adv7181_runtime_suspend,
|
|
adv7181_runtime_resume, NULL)
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops adv7181_video_ops = {
|
|
.s_stream = adv7181_s_stream,
|
|
.querystd = adv7181_querystd,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops adv7181_pad_ops = {
|
|
.enum_mbus_code = adv7181_enum_mbus_code,
|
|
.enum_frame_size = adv7181_enum_frame_sizes,
|
|
.get_fmt = adv7181_get_fmt,
|
|
.set_fmt = adv7181_set_fmt,
|
|
};
|
|
|
|
static struct v4l2_subdev_sensor_ops adv7181_sensor_ops = {
|
|
.g_skip_top_lines = adv7181_g_skip_top_lines,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops adv7181_subdev_ops = {
|
|
.video = &adv7181_video_ops,
|
|
.pad = &adv7181_pad_ops,
|
|
.sensor = &adv7181_sensor_ops,
|
|
};
|
|
|
|
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
|
|
static const struct v4l2_subdev_internal_ops adv7181_internal_ops = {
|
|
.open = adv7181_open,
|
|
};
|
|
#endif
|
|
|
|
static int adv7181_check_sensor_id(struct adv7181 *adv7181,
|
|
struct i2c_client *client)
|
|
{
|
|
struct device *dev = &adv7181->client->dev;
|
|
u8 id;
|
|
|
|
id = adv7181_read_reg(client, REG_CHIP_ID);
|
|
|
|
if (id != CHIP_ID) {
|
|
dev_err(dev, "Wrong camera sensor id(%04x)\n", id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_info(dev, "Detected ADV7181 (%04x) sensor\n", CHIP_ID);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7181_configure_regulators(struct adv7181 *adv7181)
|
|
{
|
|
u32 i;
|
|
|
|
for (i = 0; i < ADV7181_NUM_SUPPLIES; i++)
|
|
adv7181->supplies[i].supply = adv7181_supply_names[i];
|
|
|
|
return devm_regulator_bulk_get(&adv7181->client->dev,
|
|
ADV7181_NUM_SUPPLIES,
|
|
adv7181->supplies);
|
|
}
|
|
|
|
static int adv7181_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct adv7181 *adv7181;
|
|
int ret;
|
|
|
|
adv7181 = devm_kzalloc(dev, sizeof(*adv7181), GFP_KERNEL);
|
|
if (!adv7181)
|
|
return -ENOMEM;
|
|
|
|
adv7181->skip_top = ADV7181_SKIP_TOP;
|
|
|
|
adv7181->client = client;
|
|
adv7181->cur_mode = &supported_modes[0];
|
|
|
|
adv7181->xvclk = devm_clk_get(dev, "xvclk");
|
|
if (!IS_ERR(adv7181->xvclk)) {
|
|
ret = clk_set_rate(adv7181->xvclk, ADV7181_XVCLK_FREQ);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to set xvclk rate (24MHz)\n");
|
|
return ret;
|
|
}
|
|
if (clk_get_rate(adv7181->xvclk) != ADV7181_XVCLK_FREQ)
|
|
dev_warn(dev, "xvclk mismatched, it requires 24MHz\n");
|
|
}
|
|
|
|
adv7181->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
|
|
if (IS_ERR(adv7181->reset_gpio)) {
|
|
dev_err(dev, "Failed to get reset-gpios\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = adv7181_configure_regulators(adv7181);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to get power regulators\n");
|
|
return ret;
|
|
}
|
|
|
|
mutex_init(&adv7181->mutex);
|
|
v4l2_i2c_subdev_init(&adv7181->subdev, client, &adv7181_subdev_ops);
|
|
|
|
ret = __adv7181_power_on(adv7181);
|
|
if (ret)
|
|
goto err_destroy_mutex;
|
|
|
|
ret = adv7181_check_sensor_id(adv7181, client);
|
|
if (ret)
|
|
goto err_power_off;
|
|
|
|
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
|
|
adv7181->subdev.internal_ops = &adv7181_internal_ops;
|
|
adv7181->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
#endif
|
|
#if defined(CONFIG_MEDIA_CONTROLLER)
|
|
adv7181->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
adv7181->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
|
|
ret = media_entity_init(&adv7181->subdev.entity, 1, &adv7181->pad, 0);
|
|
if (ret < 0)
|
|
goto err_power_off;
|
|
#endif
|
|
|
|
ret = v4l2_async_register_subdev(&adv7181->subdev);
|
|
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(&adv7181->subdev.entity);
|
|
#endif
|
|
err_power_off:
|
|
__adv7181_power_off(adv7181);
|
|
err_destroy_mutex:
|
|
mutex_destroy(&adv7181->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void adv7181_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct adv7181 *adv7181 = to_adv7181(sd);
|
|
|
|
v4l2_async_unregister_subdev(sd);
|
|
#if defined(CONFIG_MEDIA_CONTROLLER)
|
|
media_entity_cleanup(&sd->entity);
|
|
#endif
|
|
mutex_destroy(&adv7181->mutex);
|
|
|
|
pm_runtime_disable(&client->dev);
|
|
if (!pm_runtime_status_suspended(&client->dev))
|
|
__adv7181_power_off(adv7181);
|
|
pm_runtime_set_suspended(&client->dev);
|
|
}
|
|
|
|
static const struct i2c_device_id adv7181_id[] = {
|
|
{"adv7181", 0},
|
|
{},
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_OF)
|
|
static const struct of_device_id adv7181_of_match[] = {
|
|
{ .compatible = "adi,adv7181" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, adv7181_of_match);
|
|
#endif
|
|
|
|
static struct i2c_driver adv7181_i2c_driver = {
|
|
.driver = {
|
|
.name = "adv7181",
|
|
.pm = &adv7181_pm_ops,
|
|
.of_match_table = adv7181_of_match
|
|
},
|
|
.probe = adv7181_probe,
|
|
.remove = adv7181_remove,
|
|
.id_table = adv7181_id,
|
|
};
|
|
|
|
module_i2c_driver(adv7181_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("adv7181 sensor driver");
|
|
MODULE_LICENSE("GPL v2");
|