// SPDX-License-Identifier: GPL-2.0
/*
* sc2239 driver
*
* Copyright (C) 2020 Rockchip Electronics Co., Ltd.
*
* V0.0X01.0X00 first version.
* V0.0X01.0X01 add quick stream support.
*/
//#define DEBUG
#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/rk-camera-module.h>
#include <linux/slab.h>
#include <linux/version.h>
#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x01)
#ifndef V4L2_CID_DIGITAL_GAIN
#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
#endif
#define SC2239_LANES 1
#define SC2239_BITS_PER_SAMPLE 10
#define SC2239_LINK_FREQ 371250000 // 742.5Mbps
#define SC2239_PIXEL_RATE (SC2239_LINK_FREQ * 2 * \
SC2239_LANES / SC2239_BITS_PER_SAMPLE)
#define SC2239_XVCLK_FREQ 24000000
#define CHIP_ID 0xcb10
#define SC2239_REG_CHIP_ID 0x3107
#define SC2239_REG_CTRL_MODE 0x0100
#define SC2239_MODE_SW_STANDBY 0x0
#define SC2239_MODE_STREAMING BIT(0)
#define SC2239_REG_EXPOSURE 0x3e00
#define SC2239_EXPOSURE_MIN 1
#define SC2239_EXPOSURE_STEP 1
#define SC2239_VTS_MAX 0xffff
#define SC2239_REG_COARSE_AGAIN 0x3e08
#define SC2239_REG_FINE_AGAIN 0x3e09
#define ANALOG_GAIN_MIN 0x20
#define ANALOG_GAIN_MAX 0x1F8
#define ANALOG_GAIN_STEP 1
#define ANALOG_GAIN_DEFAULT 0x40
#define SC4238_GROUP_UPDATE_ADDRESS 0x3812
#define SC4238_GROUP_UPDATE_START_DATA 0x00
#define SC4238_GROUP_UPDATE_END_DATA 0x30
#define SC2239_REG_TEST_PATTERN 0x4501
#define SC2239_TEST_PATTERN_BIT_MASK BIT(3)
#define SC2239_REG_VTS 0x320e
#define REG_NULL 0xFFFF
#define DELAY_MS 0xEEEE /* Array delay token */
#define SC2239_REG_VALUE_08BIT 1
#define SC2239_REG_VALUE_16BIT 2
#define SC2239_REG_VALUE_24BIT 3
#define PIX_FORMAT MEDIA_BUS_FMT_SBGGR10_1X10
#define SC2239_NAME "sc2239"
static const char * const sc2239_supply_names[] = {
"avdd", /* Analog power */
"dovdd", /* Digital I/O power */
"dvdd", /* Digital core power */
};
#define SC2239_NUM_SUPPLIES ARRAY_SIZE(sc2239_supply_names)
struct regval {
u16 addr;
u8 val;
};
struct sc2239_mode {
u32 width;
u32 height;
struct v4l2_fract max_fps;
u32 hts_def;
u32 vts_def;
u32 exp_def;
const struct regval *reg_list;
};
struct sc2239 {
struct i2c_client *client;
struct clk *xvclk;
struct gpio_desc *reset_gpio;
struct gpio_desc *pwdn_gpio;
struct regulator_bulk_data supplies[SC2239_NUM_SUPPLIES];
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 *test_pattern;
struct mutex mutex;
struct v4l2_fract cur_fps;
u32 cur_vts;
bool streaming;
bool power_on;
const struct sc2239_mode *cur_mode;
u32 module_index;
const char *module_facing;
const char *module_name;
const char *len_name;
u32 old_gain;
};
#define to_sc2239(sd) container_of(sd, struct sc2239, subdev)
/*
* Xclk 24Mhz
* max_framerate 30fps
* mipi_datarate per lane 742.5Mbps, 1 lane
*/
static const struct regval sc2239_global_regs[] = {
{0x0103, 0x01},
{0x0100, 0x00},
{0x36e9, 0x80},
{0x36f9, 0x80},
{0x301f, 0x34},
{0x3038, 0x44},
{0x3253, 0x12},
{0x3301, 0x05},
{0x3304, 0xa8},
{0x3306, 0x68},
{0x3308, 0x10},
{0x3309, 0x48},
{0x330a, 0x01},
{0x330b, 0x40},
{0x331e, 0xa1},
{0x331f, 0x41},
{0x3333, 0x10},
{0x3364, 0x17},
{0x3390, 0x08},
{0x3391, 0x18},
{0x3392, 0x38},
{0x3393, 0x08},
{0x3394, 0x0d},
{0x3395, 0x70},
{0x33af, 0x20},
{0x360f, 0x01},
{0x3630, 0x00},
{0x3634, 0x64},
{0x3637, 0x10},
{0x363c, 0x05},
{0x3670, 0x0c},
{0x3671, 0xc2},
{0x3672, 0x02},
{0x3673, 0x02},
{0x3677, 0x84},
{0x3678, 0x84},
{0x3679, 0x8e},
{0x367a, 0x18},
{0x367b, 0x38},
{0x367e, 0x08},
{0x367f, 0x38},
{0x3690, 0x64},
{0x3691, 0x64},
{0x3692, 0x64},
{0x369c, 0x08},
{0x369d, 0x18},
{0x36ea, 0x75},
{0x36ed, 0x24},
{0x36fa, 0x75},
{0x36fb, 0x00},
{0x36fc, 0x10},
{0x36fd, 0x34},
{0x3904, 0x08},
{0x3908, 0x82},
{0x3933, 0x82},
{0x3934, 0x1b},
{0x3940, 0x77},
{0x3941, 0x18},
{0x3942, 0x02},
{0x3943, 0x1c},
{0x3944, 0x0b},
{0x3945, 0x80},
{0x3e01, 0x8c},
{0x3e02, 0x20},
{0x4509, 0x20},
{0x4800, 0x64},
{0x4819, 0x09},
{0x481b, 0x05},
{0x481d, 0x14},
{0x4821, 0x0a},
{0x4823, 0x05},
{0x5000, 0x06},
{0x5780, 0x7f},
{0x5781, 0x04},
{0x5782, 0x03},
{0x5783, 0x02},
{0x5784, 0x01},
{0x5785, 0x18},
{0x5786, 0x10},
{0x5787, 0x08},
{0x5788, 0x02},
{0x5789, 0x20},
{0x578a, 0x7f},
{0x36e9, 0x29},
{0x36f9, 0x29},
{DELAY_MS, 0x0a},
{REG_NULL, 0x00},
};
/*
* Xclk 24Mhz
* max_framerate 30fps
* mipi_datarate per lane 742.5Mbps, 1lane
*/
static const struct regval sc2239_1920x1080_regs_1lane[] = {
{REG_NULL, 0x00},
};
static const struct sc2239_mode supported_modes[] = {
{
.width = 1920,
.height = 1080,
.max_fps = {
.numerator = 10000,
.denominator = 300000,
},
.exp_def = 0x0400,
.hts_def = 0x44C * 2,
.vts_def = 0x0465,
.reg_list = sc2239_1920x1080_regs_1lane,
},
};
static const char * const sc2239_test_pattern_menu[] = {
"Disabled",
"Vertical Color Bar Type 1",
"Vertical Color Bar Type 2",
"Vertical Color Bar Type 3",
"Vertical Color Bar Type 4"
};
static const s64 link_freq_menu_items[] = {
SC2239_LINK_FREQ
};
/* Write registers up to 4 at a time */
static int sc2239_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;
u32 ret;
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++];
ret = i2c_master_send(client, buf, len + 2);
if (ret != len + 2)
return -EIO;
return 0;
}
static int sc2239_write_array(struct i2c_client *client,
const struct regval *regs)
{
u32 i;
int delay_ms = 0, ret = 0;
for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) {
if (regs[i].addr == DELAY_MS) {
delay_ms = regs[i].val;
dev_info(&client->dev, "delay(%d) ms !\n", delay_ms);
usleep_range(1000 * delay_ms, 1000 * delay_ms + 100);
i++;
continue;
}
ret = sc2239_write_reg(client, regs[i].addr,
SC2239_REG_VALUE_08BIT, regs[i].val);
}
return ret;
}
/* Read registers up to 4 at a time */
static int sc2239_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 *)®_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 sc2239_get_reso_dist(const struct sc2239_mode *mode,
struct v4l2_mbus_framefmt *framefmt)
{
return abs(mode->width - framefmt->width) +
abs(mode->height - framefmt->height);
}
static const struct sc2239_mode *
sc2239_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 = sc2239_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 sc2239_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct sc2239 *sc2239 = to_sc2239(sd);
const struct sc2239_mode *mode;
s64 h_blank, vblank_def;
mutex_lock(&sc2239->mutex);
mode = sc2239_find_best_fit(fmt);
fmt->format.code = PIX_FORMAT;
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, cfg, fmt->pad) = fmt->format;
#else
mutex_unlock(&sc2239->mutex);
return -ENOTTY;
#endif
} else {
sc2239->cur_mode = mode;
h_blank = mode->hts_def - mode->width;
__v4l2_ctrl_modify_range(sc2239->hblank, h_blank,
h_blank, 1, h_blank);
vblank_def = mode->vts_def - mode->height;
__v4l2_ctrl_modify_range(sc2239->vblank, vblank_def,
SC2239_VTS_MAX - mode->height,
1, vblank_def);
sc2239->cur_fps = mode->max_fps;
sc2239->cur_vts = mode->vts_def;
}
mutex_unlock(&sc2239->mutex);
return 0;
}
static int sc2239_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct sc2239 *sc2239 = to_sc2239(sd);
const struct sc2239_mode *mode = sc2239->cur_mode;
mutex_lock(&sc2239->mutex);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
#else
mutex_unlock(&sc2239->mutex);
return -ENOTTY;
#endif
} else {
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = PIX_FORMAT;
fmt->format.field = V4L2_FIELD_NONE;
}
mutex_unlock(&sc2239->mutex);
return 0;
}
static int sc2239_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index != 0)
return -EINVAL;
code->code = PIX_FORMAT;
return 0;
}
static int sc2239_enum_frame_sizes(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
if (fse->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
if (fse->code != PIX_FORMAT)
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 sc2239_enable_test_pattern(struct sc2239 *sc2239, u32 pattern)
{
u32 val = 0;
int ret = 0;
ret = sc2239_read_reg(sc2239->client, SC2239_REG_TEST_PATTERN,
SC2239_REG_VALUE_08BIT, &val);
if (pattern)
val |= SC2239_TEST_PATTERN_BIT_MASK;
else
val &= ~SC2239_TEST_PATTERN_BIT_MASK;
ret |= sc2239_write_reg(sc2239->client, SC2239_REG_TEST_PATTERN,
SC2239_REG_VALUE_08BIT, val);
return ret;
}
static void sc2239_get_module_inf(struct sc2239 *sc2239,
struct rkmodule_inf *inf)
{
memset(inf, 0, sizeof(*inf));
strlcpy(inf->base.sensor, SC2239_NAME, sizeof(inf->base.sensor));
strlcpy(inf->base.module, sc2239->module_name,
sizeof(inf->base.module));
strlcpy(inf->base.lens, sc2239->len_name, sizeof(inf->base.lens));
}
static long sc2239_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct sc2239 *sc2239 = to_sc2239(sd);
long ret = 0;
u32 stream;
switch (cmd) {
case RKMODULE_GET_MODULE_INFO:
sc2239_get_module_inf(sc2239, (struct rkmodule_inf *)arg);
break;
case RKMODULE_SET_QUICK_STREAM:
stream = *((u32 *)arg);
if (stream)
ret = sc2239_write_reg(sc2239->client, SC2239_REG_CTRL_MODE,
SC2239_REG_VALUE_08BIT, SC2239_MODE_STREAMING);
else
ret = sc2239_write_reg(sc2239->client, SC2239_REG_CTRL_MODE,
SC2239_REG_VALUE_08BIT, SC2239_MODE_SW_STANDBY);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
#ifdef CONFIG_COMPAT
static long sc2239_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;
long ret;
u32 stream;
switch (cmd) {
case RKMODULE_GET_MODULE_INFO:
inf = kzalloc(sizeof(*inf), GFP_KERNEL);
if (!inf) {
ret = -ENOMEM;
return ret;
}
ret = sc2239_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 = sc2239_ioctl(sd, cmd, cfg);
else
ret = -EFAULT;
kfree(cfg);
break;
case RKMODULE_SET_QUICK_STREAM:
ret = copy_from_user(&stream, up, sizeof(u32));
if (!ret)
ret = sc2239_ioctl(sd, cmd, &stream);
else
ret = -EFAULT;
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
#endif
static int sc2239_set_ctrl_gain(struct sc2239 *sc2239, u32 a_gain)
{
int ret = 0;
u32 coarse_again, fine_again, fine_again_reg, coarse_again_reg;
u32 switch_value;
if ( a_gain != sc2239->old_gain) {
if (a_gain < 0x40) { /*1x ~ 2x*/
fine_again = a_gain - 32;
coarse_again = 0x03;
fine_again_reg = ((0x01 << 5) & 0x20) |
(fine_again & 0x1f);
coarse_again_reg = coarse_again & 0x1F;
switch_value = 0x64;
} else if (a_gain < 0x80) { /*2x ~ 4x*/
fine_again = (a_gain >> 1) - 32;
coarse_again = 0x7;
fine_again_reg = ((0x01 << 5) & 0x20) |
(fine_again & 0x1f);
coarse_again_reg = coarse_again & 0x1F;
switch_value = 0x64;
} else if (a_gain < 0x100) { /*4x ~ 8x*/
fine_again = (a_gain >> 2) - 32;
coarse_again = 0xf;
fine_again_reg = ((0x01 << 5) & 0x20) |
(fine_again & 0x1f);
coarse_again_reg = coarse_again & 0x1F;
switch_value = 0x44;
} else { /*8x ~ 16x*/
fine_again = (a_gain >> 3) - 32;
coarse_again = 0x1f;
fine_again_reg = ((0x01 << 5) & 0x20) |
(fine_again & 0x1f);
coarse_again_reg = coarse_again & 0x1F;
switch_value = 0x24;
}
ret = sc2239_write_reg(sc2239->client, 0x3634,
SC2239_REG_VALUE_08BIT, switch_value);
ret |= sc2239_write_reg(sc2239->client,
SC2239_REG_COARSE_AGAIN,
SC2239_REG_VALUE_08BIT,
coarse_again_reg);
ret |= sc2239_write_reg(sc2239->client,
SC2239_REG_FINE_AGAIN,
SC2239_REG_VALUE_08BIT,
fine_again_reg);
sc2239->old_gain = a_gain;
}
return ret;
}
static int __sc2239_start_stream(struct sc2239 *sc2239)
{
int ret;
ret = sc2239_write_array(sc2239->client, sc2239->cur_mode->reg_list);
if (ret)
return ret;
/* In case these controls are set before streaming */
mutex_unlock(&sc2239->mutex);
ret = v4l2_ctrl_handler_setup(&sc2239->ctrl_handler);
mutex_lock(&sc2239->mutex);
if (ret)
return ret;
return sc2239_write_reg(sc2239->client, SC2239_REG_CTRL_MODE,
SC2239_REG_VALUE_08BIT, SC2239_MODE_STREAMING);
}
static int __sc2239_stop_stream(struct sc2239 *sc2239)
{
return sc2239_write_reg(sc2239->client, SC2239_REG_CTRL_MODE,
SC2239_REG_VALUE_08BIT, SC2239_MODE_SW_STANDBY);
}
static int sc2239_s_stream(struct v4l2_subdev *sd, int on)
{
struct sc2239 *sc2239 = to_sc2239(sd);
struct i2c_client *client = sc2239->client;
int ret = 0;
dev_info(&client->dev, "%s: on: %d, %dx%d@%d\n", __func__, on,
sc2239->cur_mode->width,
sc2239->cur_mode->height,
DIV_ROUND_CLOSEST(sc2239->cur_mode->max_fps.denominator,
sc2239->cur_mode->max_fps.numerator));
mutex_lock(&sc2239->mutex);
on = !!on;
if (on == sc2239->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 = __sc2239_start_stream(sc2239);
if (ret) {
v4l2_err(sd, "start stream failed while write regs\n");
pm_runtime_put(&client->dev);
goto unlock_and_return;
}
} else {
__sc2239_stop_stream(sc2239);
pm_runtime_put(&client->dev);
}
sc2239->streaming = on;
unlock_and_return:
mutex_unlock(&sc2239->mutex);
return ret;
}
static int sc2239_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *fi)
{
struct sc2239 *sc2239 = to_sc2239(sd);
const struct sc2239_mode *mode = sc2239->cur_mode;
if (sc2239->streaming)
fi->interval = sc2239->cur_fps;
else
fi->interval = mode->max_fps;
return 0;
}
static int sc2239_s_power(struct v4l2_subdev *sd, int on)
{
struct sc2239 *sc2239 = to_sc2239(sd);
struct i2c_client *client = sc2239->client;
int ret = 0;
mutex_lock(&sc2239->mutex);
/* If the power state is not modified - no work to do. */
if (sc2239->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;
}
ret = sc2239_write_array(sc2239->client, sc2239_global_regs);
if (ret) {
v4l2_err(sd, "could not set init registers\n");
pm_runtime_put_noidle(&client->dev);
goto unlock_and_return;
}
sc2239->power_on = true;
} else {
pm_runtime_put(&client->dev);
sc2239->power_on = false;
}
unlock_and_return:
mutex_unlock(&sc2239->mutex);
return ret;
}
/* Calculate the delay in us by clock rate and clock cycles */
static inline u32 sc2239_cal_delay(u32 cycles)
{
return DIV_ROUND_UP(cycles, SC2239_XVCLK_FREQ / 1000 / 1000);
}
static int __sc2239_power_on(struct sc2239 *sc2239)
{
int ret;
u32 delay_us;
struct device *dev = &sc2239->client->dev;
ret = clk_set_rate(sc2239->xvclk, SC2239_XVCLK_FREQ);
if (ret < 0)
dev_warn(dev, "Failed to set xvclk rate (24MHz)\n");
if (clk_get_rate(sc2239->xvclk) != SC2239_XVCLK_FREQ)
dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
ret = clk_prepare_enable(sc2239->xvclk);
if (ret < 0) {
dev_err(dev, "Failed to enable xvclk\n");
return ret;
}
if (!IS_ERR(sc2239->reset_gpio))
gpiod_set_value_cansleep(sc2239->reset_gpio, 0);
ret = regulator_bulk_enable(SC2239_NUM_SUPPLIES, sc2239->supplies);
if (ret < 0) {
dev_err(dev, "Failed to enable regulators\n");
goto disable_clk;
}
if (!IS_ERR(sc2239->reset_gpio))
gpiod_set_value_cansleep(sc2239->reset_gpio, 1);
if (!IS_ERR(sc2239->pwdn_gpio))
gpiod_set_value_cansleep(sc2239->pwdn_gpio, 1);
/* 8192 cycles prior to first SCCB transaction */
delay_us = sc2239_cal_delay(8192);
usleep_range(delay_us, delay_us * 2);
return 0;
disable_clk:
clk_disable_unprepare(sc2239->xvclk);
return ret;
}
static void __sc2239_power_off(struct sc2239 *sc2239)
{
if (!IS_ERR(sc2239->pwdn_gpio))
gpiod_set_value_cansleep(sc2239->pwdn_gpio, 0);
clk_disable_unprepare(sc2239->xvclk);
if (!IS_ERR(sc2239->reset_gpio))
gpiod_set_value_cansleep(sc2239->reset_gpio, 0);
regulator_bulk_disable(SC2239_NUM_SUPPLIES, sc2239->supplies);
}
static int sc2239_runtime_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct sc2239 *sc2239 = to_sc2239(sd);
return __sc2239_power_on(sc2239);
}
static int sc2239_runtime_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct sc2239 *sc2239 = to_sc2239(sd);
__sc2239_power_off(sc2239);
return 0;
}
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static int sc2239_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct sc2239 *sc2239 = to_sc2239(sd);
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(sd, fh->pad, 0);
const struct sc2239_mode *def_mode = &supported_modes[0];
mutex_lock(&sc2239->mutex);
/* Initialize try_fmt */
try_fmt->width = def_mode->width;
try_fmt->height = def_mode->height;
try_fmt->code = PIX_FORMAT;
try_fmt->field = V4L2_FIELD_NONE;
mutex_unlock(&sc2239->mutex);
/* No crop or compose */
return 0;
}
#endif
static int sc2239_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad_id,
struct v4l2_mbus_config *config)
{
u32 val = 1 << (SC2239_LANES - 1) |
V4L2_MBUS_CSI2_CHANNEL_0 |
V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
config->type = V4L2_MBUS_CSI2_DPHY;
config->flags = val;
return 0;
}
static int sc2239_enum_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_interval_enum *fie)
{
if (fie->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
if (fie->code != PIX_FORMAT)
return -EINVAL;
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 const struct dev_pm_ops sc2239_pm_ops = {
SET_RUNTIME_PM_OPS(sc2239_runtime_suspend,
sc2239_runtime_resume, NULL)
};
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static const struct v4l2_subdev_internal_ops sc2239_internal_ops = {
.open = sc2239_open,
};
#endif
static const struct v4l2_subdev_core_ops sc2239_core_ops = {
.s_power = sc2239_s_power,
.ioctl = sc2239_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = sc2239_compat_ioctl32,
#endif
};
static const struct v4l2_subdev_video_ops sc2239_video_ops = {
.s_stream = sc2239_s_stream,
.g_frame_interval = sc2239_g_frame_interval,
};
static const struct v4l2_subdev_pad_ops sc2239_pad_ops = {
.enum_mbus_code = sc2239_enum_mbus_code,
.enum_frame_size = sc2239_enum_frame_sizes,
.enum_frame_interval = sc2239_enum_frame_interval,
.get_fmt = sc2239_get_fmt,
.set_fmt = sc2239_set_fmt,
.get_mbus_config = sc2239_g_mbus_config,
};
static const struct v4l2_subdev_ops sc2239_subdev_ops = {
.core = &sc2239_core_ops,
.video = &sc2239_video_ops,
.pad = &sc2239_pad_ops,
};
static void sc2239_modify_fps_info(struct sc2239 *sc2239)
{
const struct sc2239_mode *mode = sc2239->cur_mode;
sc2239->cur_fps.denominator = mode->max_fps.denominator * mode->vts_def /
sc2239->cur_vts;
}
static int sc2239_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct sc2239 *sc2239 = container_of(ctrl->handler,
struct sc2239, ctrl_handler);
struct i2c_client *client = sc2239->client;
s64 max;
int ret = 0;
dev_dbg(&client->dev, "ctrl->id(0x%x) val 0x%x\n",
ctrl->id, ctrl->val);
/* Propagate change of current control to all related controls */
switch (ctrl->id) {
case V4L2_CID_VBLANK:
/* Update max exposure while meeting expected vblanking */
max = sc2239->cur_mode->height + ctrl->val - 4;
__v4l2_ctrl_modify_range(sc2239->exposure,
sc2239->exposure->minimum, max,
sc2239->exposure->step,
sc2239->exposure->default_value);
break;
}
if (!pm_runtime_get_if_in_use(&client->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
/* 4 least significant bits of expsoure are fractional part */
ret = sc2239_write_reg(sc2239->client, SC2239_REG_EXPOSURE,
SC2239_REG_VALUE_24BIT, ctrl->val << 5);
dev_dbg(&client->dev, "set exposure 0x%x\n",
ctrl->val);
break;
case V4L2_CID_ANALOGUE_GAIN:
ret = sc2239_set_ctrl_gain(sc2239, ctrl->val);
dev_dbg(&client->dev, "set analog gain 0x%x\n",
ctrl->val);
break;
case V4L2_CID_VBLANK:
ret = sc2239_write_reg(sc2239->client, SC2239_REG_VTS,
SC2239_REG_VALUE_16BIT,
ctrl->val + sc2239->cur_mode->height);
if (!ret)
sc2239->cur_vts = ctrl->val + sc2239->cur_mode->height;
if (sc2239->cur_vts != sc2239->cur_mode->vts_def)
sc2239_modify_fps_info(sc2239);
break;
case V4L2_CID_TEST_PATTERN:
ret = sc2239_enable_test_pattern(sc2239, ctrl->val);
break;
default:
dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
__func__, ctrl->id, ctrl->val);
break;
}
pm_runtime_put(&client->dev);
return ret;
}
static const struct v4l2_ctrl_ops sc2239_ctrl_ops = {
.s_ctrl = sc2239_set_ctrl,
};
static int sc2239_initialize_controls(struct sc2239 *sc2239)
{
const struct sc2239_mode *mode;
struct v4l2_ctrl_handler *handler;
struct v4l2_ctrl *ctrl;
s64 exposure_max, vblank_def;
u32 h_blank;
int ret;
handler = &sc2239->ctrl_handler;
mode = sc2239->cur_mode;
ret = v4l2_ctrl_handler_init(handler, 8);
if (ret)
return ret;
handler->lock = &sc2239->mutex;
ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
0, 0, link_freq_menu_items);
if (ctrl)
ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
0, SC2239_PIXEL_RATE, 1, SC2239_PIXEL_RATE);
h_blank = mode->hts_def - mode->width;
sc2239->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
h_blank, h_blank, 1, h_blank);
if (sc2239->hblank)
sc2239->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
vblank_def = mode->vts_def - mode->height;
sc2239->vblank = v4l2_ctrl_new_std(handler, &sc2239_ctrl_ops,
V4L2_CID_VBLANK, vblank_def,
SC2239_VTS_MAX - mode->height,
1, vblank_def);
exposure_max = mode->vts_def - 4;
sc2239->exposure = v4l2_ctrl_new_std(handler, &sc2239_ctrl_ops,
V4L2_CID_EXPOSURE, SC2239_EXPOSURE_MIN,
exposure_max, SC2239_EXPOSURE_STEP,
mode->exp_def);
sc2239->anal_gain = v4l2_ctrl_new_std(handler, &sc2239_ctrl_ops,
V4L2_CID_ANALOGUE_GAIN, ANALOG_GAIN_MIN,
ANALOG_GAIN_MAX, ANALOG_GAIN_STEP,
ANALOG_GAIN_DEFAULT);
sc2239->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
&sc2239_ctrl_ops, V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(sc2239_test_pattern_menu) - 1,
0, 0, sc2239_test_pattern_menu);
if (handler->error) {
ret = handler->error;
dev_err(&sc2239->client->dev,
"Failed to init controls(%d)\n", ret);
goto err_free_handler;
}
sc2239->subdev.ctrl_handler = handler;
sc2239->old_gain = ANALOG_GAIN_DEFAULT;
sc2239->cur_fps = mode->max_fps;
sc2239->cur_vts = mode->vts_def;
return 0;
err_free_handler:
v4l2_ctrl_handler_free(handler);
return ret;
}
static int sc2239_check_sensor_id(struct sc2239 *sc2239,
struct i2c_client *client)
{
struct device *dev = &sc2239->client->dev;
u32 id = 0;
int ret;
ret = sc2239_read_reg(client, SC2239_REG_CHIP_ID,
SC2239_REG_VALUE_16BIT, &id);
if (id != CHIP_ID) {
dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", id, ret);
return -ENODEV;
}
dev_info(dev, "Detected SC2239 CHIP ID = 0x%04x sensor\n", CHIP_ID);
return 0;
}
static int sc2239_configure_regulators(struct sc2239 *sc2239)
{
unsigned int i;
for (i = 0; i < SC2239_NUM_SUPPLIES; i++)
sc2239->supplies[i].supply = sc2239_supply_names[i];
return devm_regulator_bulk_get(&sc2239->client->dev,
SC2239_NUM_SUPPLIES,
sc2239->supplies);
}
static int sc2239_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device_node *node = dev->of_node;
struct sc2239 *sc2239;
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);
sc2239 = devm_kzalloc(dev, sizeof(*sc2239), GFP_KERNEL);
if (!sc2239)
return -ENOMEM;
ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
&sc2239->module_index);
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
&sc2239->module_facing);
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
&sc2239->module_name);
ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
&sc2239->len_name);
if (ret) {
dev_err(dev, "could not get module information!\n");
return -EINVAL;
}
sc2239->client = client;
sc2239->cur_mode = &supported_modes[0];
sc2239->xvclk = devm_clk_get(dev, "xvclk");
if (IS_ERR(sc2239->xvclk)) {
dev_err(dev, "Failed to get xvclk\n");
return -EINVAL;
}
sc2239->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(sc2239->reset_gpio))
dev_warn(dev, "Failed to get reset-gpios\n");
sc2239->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
if (IS_ERR(sc2239->pwdn_gpio))
dev_warn(dev, "Failed to get pwdn-gpios\n");
ret = sc2239_configure_regulators(sc2239);
if (ret) {
dev_err(dev, "Failed to get power regulators\n");
return ret;
}
mutex_init(&sc2239->mutex);
sd = &sc2239->subdev;
v4l2_i2c_subdev_init(sd, client, &sc2239_subdev_ops);
ret = sc2239_initialize_controls(sc2239);
if (ret)
goto err_destroy_mutex;
ret = __sc2239_power_on(sc2239);
if (ret)
goto err_free_handler;
ret = sc2239_check_sensor_id(sc2239, client);
if (ret)
goto err_power_off;
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
sd->internal_ops = &sc2239_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
#endif
#if defined(CONFIG_MEDIA_CONTROLLER)
sc2239->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &sc2239->pad);
if (ret < 0)
goto err_power_off;
#endif
memset(facing, 0, sizeof(facing));
if (strcmp(sc2239->module_facing, "back") == 0)
facing[0] = 'b';
else
facing[0] = 'f';
snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
sc2239->module_index, facing,
SC2239_NAME, dev_name(sd->dev));
ret = v4l2_async_register_subdev_sensor_common(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:
__sc2239_power_off(sc2239);
err_free_handler:
v4l2_ctrl_handler_free(&sc2239->ctrl_handler);
err_destroy_mutex:
mutex_destroy(&sc2239->mutex);
return ret;
}
static int sc2239_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct sc2239 *sc2239 = to_sc2239(sd);
v4l2_async_unregister_subdev(sd);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&sd->entity);
#endif
v4l2_ctrl_handler_free(&sc2239->ctrl_handler);
mutex_destroy(&sc2239->mutex);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
__sc2239_power_off(sc2239);
pm_runtime_set_suspended(&client->dev);
return 0;
}
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id sc2239_of_match[] = {
{ .compatible = "smartsens,sc2239" },
{},
};
MODULE_DEVICE_TABLE(of, sc2239_of_match);
#endif
static const struct i2c_device_id sc2239_match_id[] = {
{ "smartsens,sc2239", 0 },
{ },
};
static struct i2c_driver sc2239_i2c_driver = {
.driver = {
.name = SC2239_NAME,
.pm = &sc2239_pm_ops,
.of_match_table = of_match_ptr(sc2239_of_match),
},
.probe = &sc2239_probe,
.remove = &sc2239_remove,
.id_table = sc2239_match_id,
};
static int __init sensor_mod_init(void)
{
return i2c_add_driver(&sc2239_i2c_driver);
}
static void __exit sensor_mod_exit(void)
{
i2c_del_driver(&sc2239_i2c_driver);
}
device_initcall_sync(sensor_mod_init);
module_exit(sensor_mod_exit);
MODULE_DESCRIPTION("Smartsens sc2239 sensor driver");
MODULE_AUTHOR("zack.zeng");
MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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