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CoolPi-Armbian-Rockchip-RK3.../drivers/media/i2c/sc210iot.c

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// SPDX-License-Identifier: GPL-2.0
/*
* sc210iot sensor driver
*
* Copyright (C) 2020 Rockchip Electronics Co., Ltd.
*
* V0.0X01.0X00 first version.
* V0.0X01.0X01 add quick stream on/off
*/
#include <linux/clk.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/of_graph.h>
#include <linux/regmap.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regulator/consumer.h>
#include <linux/version.h>
#include <linux/rk-camera-module.h>
#include <linux/rk-preisp.h>
#include <media/v4l2-async.h>
#include <media/media-entity.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
#include "../platform/rockchip/isp/rkisp_tb_helper.h"
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x01)
#define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default"
#define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep"
#define SC210IOT_NAME "sc210iot"
#define SC210IOT_MEDIA_BUS_FMT MEDIA_BUS_FMT_SBGGR10_1X10
#define MIPI_FREQ 371250000
#define SC210IOT_XVCLK_FREQ 27000000
#define SC210IOT_REG_CHIP_ID_H 0x3108
#define SC210IOT_REG_CHIP_ID_L 0x3107
#define SC210IOT_REG_EXP_LONG_H 0x3e00
#define SC210IOT_REG_EXP_LONG_M 0x3e01
#define SC210IOT_REG_EXP_LONG_L 0x3e02
#define SC210IOT_REG_GAIN_LONG_3 0x3e06
#define SC210IOT_REG_GAIN_LONG_2 0x3e07
#define SC210IOT_REG_GAIN_LONG_1 0x3e08
#define SC210IOT_REG_GAIN_LONG_0 0x3e09
#define SC210IOT_REG_MIRROR_FLIP 0x3221
#define MIRROR_MASK 0x6
#define FLIP_MASK 0x60
#define SC210IOT_REG_CTRL_MODE 0x0100
#define SC210IOT_MODE_SW_STANDBY 0x0
#define SC210IOT_MODE_STREAMING BIT(0)
#define SC210IOT_CHIP_ID 0x17cb
#define SC210IOT_REG_VTS_H 0x320e
#define SC210IOT_REG_VTS_L 0x320f
#define SC210IOT_VTS_MAX 0x3FFF
#define SC210IOT_HTS_MAX 0xFFF
#define SC210IOT_EXPOSURE_MAX 0x3FFF
#define SC210IOT_EXPOSURE_MIN 1
#define SC210IOT_EXPOSURE_STEP 1
#define SC210IOT_GAIN_MIN 0x40
#define SC210IOT_GAIN_MAX 0x8000
#define SC210IOT_GAIN_STEP 1
#define SC210IOT_GAIN_DEFAULT 64
#define SC210IOT_SOFTWARE_RESET_REG 0x0103
#define SC210IOT_LANES 2
static const char * const sc210iot_supply_names[] = {
"dovdd", /* Digital I/O power */
"avdd", /* Analog power */
"dvdd", /* Digital power */
};
#define SC210IOT_NUM_SUPPLIES ARRAY_SIZE(sc210iot_supply_names)
#define to_sc210iot(sd) container_of(sd, struct sc210iot, subdev)
enum {
LINK_FREQ_INDEX,
};
struct gain_section {
u16 min_gain;
u16 max_gain;
u16 again_regs_start;
u16 again_regs_stop;
u16 again_deviation;
u16 dgain_regs_start;
u16 dgain_regs_stop;
u16 dgain_deviation;
u16 steps;
};
struct sc210iot_mode {
u32 width;
u32 height;
struct v4l2_fract max_fps;
u32 hts_def;
u32 vts_def;
u32 exp_def;
u32 link_freq_index;
const struct reg_sequence *reg_list;
u32 reg_num;
u32 hdr_mode;
u32 vc[PAD_MAX];
};
struct sc210iot {
struct device *dev;
struct clk *xvclk;
struct regmap *regmap;
struct gpio_desc *reset_gpio;
struct gpio_desc *pwdn_gpio;
struct regulator_bulk_data supplies[SC210IOT_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 *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *h_flip;
struct v4l2_ctrl *v_flip;
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *pixel_rate;
struct mutex lock;
struct v4l2_fract cur_fps;
u32 cur_vts;
bool streaming;
bool power_on;
bool is_thunderboot;
bool is_thunderboot_ng;
bool is_first_streamoff;
unsigned int cfg_num;
const struct sc210iot_mode *cur_mode;
u32 module_index;
const char *module_facing;
const char *module_name;
const char *len_name;
bool has_init_exp;
struct preisp_hdrae_exp_s init_hdrae_exp;
};
static const struct regmap_config sc210iot_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.max_register = 0x6f00,
};
static const s64 link_freq_menu_items[] = {
MIPI_FREQ,
};
/*
* window size=1920*1080 mipi@2lane
* mclk=27M mipi_clk=371.25Mbps
* pixel_line_total=2200 line_frame_total=1125
* row_time=29.62us frame_rate=30fps
*/
static const struct reg_sequence sc210iot_1080p_liner_30fps_settings[] = {
{0x0103, 0x01},
{0x0100, 0x00},
{0x36e9, 0x80},
{0x36f9, 0x80},
{0x301c, 0x78},
{0x3208, 0x07},
{0x3209, 0x80},
{0x320a, 0x04},
{0x320b, 0x38},
{0x320e, 0x04},
{0x320f, 0x65},
{0x3214, 0x11},
{0x3215, 0x11},
{0x3253, 0x0c},
{0x3274, 0x09},
{0x3301, 0x05},
{0x3304, 0x68},
{0x3306, 0x40},
{0x330b, 0xcc},
{0x331c, 0x01},
{0x331e, 0x61},
{0x3333, 0x10},
{0x3364, 0x17},
{0x3391, 0x18},
{0x3392, 0x38},
{0x3393, 0x08},
{0x3394, 0x0b},
{0x3395, 0x50},
{0x3620, 0x88},
{0x3622, 0x06},
{0x3630, 0xf8},
{0x3634, 0x44},
{0x3637, 0x16},
{0x363a, 0x1f},
{0x3670, 0x1c},
{0x3677, 0x84},
{0x3678, 0x86},
{0x3679, 0x8b},
{0x367e, 0x18},
{0x367f, 0x38},
{0x3690, 0x53},
{0x3691, 0x63},
{0x3692, 0x63},
{0x369c, 0x08},
{0x369d, 0x38},
{0x36a4, 0x08},
{0x36a5, 0x18},
{0x36a8, 0x08},
{0x36a9, 0x28},
{0x36aa, 0x2a},
{0x36fc, 0x11},
{0x36fd, 0x14},
{0x3e01, 0x8c},
{0x3e03, 0x0b},
{0x3e08, 0x03},
{0x3e09, 0x20},
{0x3e1b, 0x15},
{0x3f03, 0x01},
{0x36e9, 0x20},
{0x36f9, 0x24},
{0x0100, 0x01},
};
static const struct sc210iot_mode supported_modes[] = {
{
.width = 1920,
.height = 1080,
.max_fps = {
.numerator = 10000,
.denominator = 300000,
},
.exp_def = 0x460,
.hts_def = 0x898,
.vts_def = 0x465,
.link_freq_index = LINK_FREQ_INDEX,
.reg_list = sc210iot_1080p_liner_30fps_settings,
.reg_num = ARRAY_SIZE(sc210iot_1080p_liner_30fps_settings),
.hdr_mode = NO_HDR,
.vc[PAD0] = 0,
},
};
/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
static u64 to_pixel_rate(u32 index)
{
u64 pixel_rate = link_freq_menu_items[index] * 2 * SC210IOT_LANES;
do_div(pixel_rate, 10);
return pixel_rate;
}
static inline int sc210iot_read_reg(struct sc210iot *sc210iot, u16 addr, u8 *value)
{
unsigned int val;
int ret;
ret = regmap_read(sc210iot->regmap, addr, &val);
if (ret) {
dev_err(sc210iot->dev, "i2c read failed at addr: %x\n", addr);
return ret;
}
*value = val & 0xff;
return 0;
}
static int __sc210iot_power_on(struct sc210iot *sc210iot);
static inline int sc210iot_write_reg(struct sc210iot *sc210iot, u16 addr, u8 value)
{
int ret;
ret = regmap_write(sc210iot->regmap, addr, value);
if (ret) {
dev_err(sc210iot->dev, "i2c write failed at addr: %x\n", addr);
return ret;
}
return ret;
}
static const struct gain_section gain_sections[] = {
{ 64, 128, 0x0320, 0x033f, 64, 0x0080, 0x0080, 0, 32 },
{ 128, 256, 0x0720, 0x073f, 128, 0x0080, 0x0080, 0, 32 },
{ 256, 512, 0x0f20, 0x0f3f, 256, 0x0080, 0x0080, 0, 32 },
{ 512, 1024, 0x1f20, 0x1f3f, 512, 0x0080, 0x0080, 0, 32 },
{ 1024, 2048, 0x1f3f, 0x1f3f, 0, 0x0080, 0x00fc, 1024, 32 },
{ 2048, 4096, 0x1f3f, 0x1f3f, 0, 0x0180, 0x01fc, 2048, 32 },
{ 4096, 8192, 0x1f3f, 0x1f3f, 0, 0x0380, 0x03fc, 4096, 32 },
{ 8192, 16384, 0x1f3f, 0x1f3f, 0, 0x0780, 0x07fc, 8192, 32 },
{ 16384, 32768, 0x1f3f, 0x1f3f, 0, 0x0f80, 0x0ffc, 16384, 32 }
};
static int sc210iot_set_gain(struct sc210iot *sc210iot, u32 gain)
{
int ret, i = 0;
int offset, step, step_len, reg_step_len;
int a_gain = 0, d_gain = 0;
dev_dbg(sc210iot->dev, "%s: gain : %d\n", __func__, gain);
if (sc210iot->is_thunderboot && rkisp_tb_get_state() == RKISP_TB_NG) {
sc210iot->is_thunderboot = false;
sc210iot->is_thunderboot_ng = true;
__sc210iot_power_on(sc210iot);
}
for (i = 0; i < ARRAY_SIZE(gain_sections) - 1; i++)
if ((gain_sections[i].min_gain <= gain) && (gain < gain_sections[i].max_gain))
break;
if (gain_sections[i].again_deviation) {
offset = gain - gain_sections[i].min_gain;
step_len = gain_sections[i].again_deviation / gain_sections[i].steps;
reg_step_len = 1;
step = offset / step_len;
a_gain = gain_sections[i].again_regs_start + step * reg_step_len;
d_gain = gain_sections[i].dgain_regs_start;
} else {
offset = gain - gain_sections[i].min_gain;
step_len = gain_sections[i].dgain_deviation / gain_sections[i].steps;
step = offset / step_len;
reg_step_len = 4;
a_gain = gain_sections[i].again_regs_start;
d_gain = gain_sections[i].dgain_regs_start + step * reg_step_len;
}
if (a_gain > gain_sections[i].again_regs_stop)
a_gain = gain_sections[i].again_regs_stop;
if (d_gain > gain_sections[i].dgain_regs_stop)
d_gain = gain_sections[i].dgain_regs_stop;
dev_dbg(sc210iot->dev, "%s: a_gain: 0x%x d_gain: 0x%x\n", __func__, a_gain, d_gain);
ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_1, a_gain >> 8);
ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_0, a_gain & 0xff);
ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_3, d_gain >> 8);
ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_GAIN_LONG_2, d_gain & 0xff);
return ret;
}
static int sc210iot_set_exp(struct sc210iot *sc210iot, u32 exp)
{
int ret;
dev_dbg(sc210iot->dev, "%s: exp : %d\n", __func__, exp);
ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_EXP_LONG_H,
(exp >> 12) & 0xf);
ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_EXP_LONG_M,
(exp >> 4) & 0xff);
ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_EXP_LONG_L,
(exp & 0xf) << 4);
return ret;
}
static void sc210iot_modify_fps_info(struct sc210iot *sc210iot)
{
const struct sc210iot_mode *mode = sc210iot->cur_mode;
sc210iot->cur_fps.denominator = mode->max_fps.denominator * mode->vts_def /
sc210iot->cur_vts;
}
static int sc210iot_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct sc210iot *sc210iot = container_of(ctrl->handler,
struct sc210iot, ctrl_handler);
s64 max;
int ret = 0;
/* Propagate change of current control to all related controls */
switch (ctrl->id) {
case V4L2_CID_VBLANK:
/* Update max exposure while meeting expected vblanking */
max = sc210iot->cur_mode->height + ctrl->val - 4;
__v4l2_ctrl_modify_range(sc210iot->exposure,
sc210iot->exposure->minimum, max,
sc210iot->exposure->step,
sc210iot->exposure->default_value);
break;
}
if (!pm_runtime_get_if_in_use(sc210iot->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
ret = sc210iot_set_exp(sc210iot, ctrl->val << 1);
break;
case V4L2_CID_ANALOGUE_GAIN:
ret = sc210iot_set_gain(sc210iot, ctrl->val);
break;
case V4L2_CID_VBLANK:
dev_dbg(sc210iot->dev, "set vblank 0x%x\n", ctrl->val);
ret = sc210iot_write_reg(sc210iot, SC210IOT_REG_VTS_H,
(ctrl->val + sc210iot->cur_mode->height) >> 8);
ret |= sc210iot_write_reg(sc210iot, SC210IOT_REG_VTS_L,
(ctrl->val + sc210iot->cur_mode->height) & 0xff);
if (!ret)
sc210iot->cur_vts = ctrl->val + sc210iot->cur_mode->height;
sc210iot_modify_fps_info(sc210iot);
break;
case V4L2_CID_HFLIP:
regmap_update_bits(sc210iot->regmap, SC210IOT_REG_MIRROR_FLIP,
MIRROR_MASK, ctrl->val ? MIRROR_MASK : 0);
break;
case V4L2_CID_VFLIP:
regmap_update_bits(sc210iot->regmap, SC210IOT_REG_MIRROR_FLIP,
FLIP_MASK, ctrl->val ? FLIP_MASK : 0);
break;
default:
dev_warn(sc210iot->dev, "%s Unhandled id:0x%x, val:0x%x\n",
__func__, ctrl->id, ctrl->val);
break;
}
pm_runtime_put(sc210iot->dev);
return ret;
}
static const struct v4l2_ctrl_ops sc210iot_ctrl_ops = {
.s_ctrl = sc210iot_set_ctrl,
};
static int sc210iot_get_regulators(struct sc210iot *sc210iot)
{
unsigned int i;
for (i = 0; i < SC210IOT_NUM_SUPPLIES; i++)
sc210iot->supplies[i].supply = sc210iot_supply_names[i];
return devm_regulator_bulk_get(sc210iot->dev,
SC210IOT_NUM_SUPPLIES,
sc210iot->supplies);
}
static int sc210iot_initialize_controls(struct sc210iot *sc210iot)
{
const struct sc210iot_mode *mode;
struct v4l2_ctrl_handler *handler;
s64 exposure_max, vblank_def;
u32 h_blank;
int ret;
handler = &sc210iot->ctrl_handler;
mode = sc210iot->cur_mode;
ret = v4l2_ctrl_handler_init(handler, 8);
if (ret)
return ret;
handler->lock = &sc210iot->lock;
sc210iot->link_freq = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
ARRAY_SIZE(link_freq_menu_items) - 1, 0,
link_freq_menu_items);
sc210iot->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
0, to_pixel_rate(LINK_FREQ_INDEX),
1, to_pixel_rate(LINK_FREQ_INDEX));
h_blank = mode->hts_def - mode->width;
sc210iot->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
h_blank, h_blank, 1, h_blank);
if (sc210iot->hblank)
sc210iot->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
vblank_def = mode->vts_def - mode->height;
sc210iot->vblank = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops,
V4L2_CID_VBLANK, vblank_def,
SC210IOT_VTS_MAX - mode->height,
1, vblank_def);
exposure_max = mode->vts_def - 4;
sc210iot->exposure = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops,
V4L2_CID_EXPOSURE, SC210IOT_EXPOSURE_MIN,
exposure_max, SC210IOT_EXPOSURE_STEP,
mode->exp_def);
sc210iot->anal_gain = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops,
V4L2_CID_ANALOGUE_GAIN, SC210IOT_GAIN_MIN,
SC210IOT_GAIN_MAX, SC210IOT_GAIN_STEP,
SC210IOT_GAIN_DEFAULT);
sc210iot->h_flip = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
sc210iot->v_flip = v4l2_ctrl_new_std(handler, &sc210iot_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
if (handler->error) {
ret = handler->error;
dev_err(sc210iot->dev, "Failed to init controls(%d)\n", ret);
goto err_free_handler;
}
sc210iot->subdev.ctrl_handler = handler;
sc210iot->has_init_exp = false;
sc210iot->cur_fps = mode->max_fps;
sc210iot->cur_vts = mode->vts_def;
return 0;
err_free_handler:
v4l2_ctrl_handler_free(handler);
return ret;
}
static int __sc210iot_power_on(struct sc210iot *sc210iot)
{
int ret;
struct device *dev = sc210iot->dev;
if (sc210iot->is_thunderboot)
return 0;
if (!IS_ERR_OR_NULL(sc210iot->pins_default)) {
ret = pinctrl_select_state(sc210iot->pinctrl,
sc210iot->pins_default);
if (ret < 0)
dev_err(dev, "could not set pins\n");
}
ret = clk_set_rate(sc210iot->xvclk, SC210IOT_XVCLK_FREQ);
if (ret < 0)
dev_warn(dev, "Failed to set xvclk rate\n");
if (clk_get_rate(sc210iot->xvclk) != SC210IOT_XVCLK_FREQ)
dev_warn(dev, "xvclk mismatched, modes are based on 27MHz\n");
ret = clk_prepare_enable(sc210iot->xvclk);
if (ret < 0) {
dev_err(dev, "Failed to enable xvclk\n");
return ret;
}
ret = regulator_bulk_enable(SC210IOT_NUM_SUPPLIES, sc210iot->supplies);
if (ret < 0) {
dev_err(dev, "Failed to enable regulators\n");
goto disable_clk;
}
if (!IS_ERR(sc210iot->reset_gpio))
gpiod_direction_output(sc210iot->reset_gpio, 1);
usleep_range(1000, 2000);
if (!IS_ERR(sc210iot->pwdn_gpio))
gpiod_direction_output(sc210iot->pwdn_gpio, 1);
if (!IS_ERR(sc210iot->reset_gpio))
gpiod_direction_output(sc210iot->reset_gpio, 0);
usleep_range(10000, 20000);
return 0;
disable_clk:
clk_disable_unprepare(sc210iot->xvclk);
if (!IS_ERR_OR_NULL(sc210iot->pins_sleep))
pinctrl_select_state(sc210iot->pinctrl, sc210iot->pins_sleep);
return ret;
}
static void __sc210iot_power_off(struct sc210iot *sc210iot)
{
int ret;
struct device *dev = sc210iot->dev;
if (sc210iot->is_thunderboot) {
if (sc210iot->is_first_streamoff) {
sc210iot->is_thunderboot = false;
sc210iot->is_first_streamoff = false;
} else {
return;
}
}
if (!IS_ERR_OR_NULL(sc210iot->pins_sleep)) {
ret = pinctrl_select_state(sc210iot->pinctrl,
sc210iot->pins_sleep);
if (ret < 0)
dev_dbg(dev, "could not set pins\n");
}
if (!IS_ERR(sc210iot->reset_gpio))
gpiod_direction_output(sc210iot->reset_gpio, 1);
if (!IS_ERR(sc210iot->pwdn_gpio))
gpiod_direction_output(sc210iot->pwdn_gpio, 0);
if (sc210iot->is_thunderboot_ng) {
sc210iot->is_thunderboot_ng = false;
regulator_bulk_disable(SC210IOT_NUM_SUPPLIES, sc210iot->supplies);
}
clk_disable_unprepare(sc210iot->xvclk);
}
static int sc210iot_check_sensor_id(struct sc210iot *sc210iot)
{
u8 id_h = 0, id_l = 0;
u16 id = 0;
int ret = 0;
if (sc210iot->is_thunderboot) {
dev_info(sc210iot->dev, "Enable thunderboot mode, skip sensor id check\n");
return 0;
}
ret = sc210iot_read_reg(sc210iot, SC210IOT_REG_CHIP_ID_H, &id_h);
ret |= sc210iot_read_reg(sc210iot, SC210IOT_REG_CHIP_ID_L, &id_l);
if (ret) {
dev_err(sc210iot->dev, "Failed to read sensor id, (%d)\n", ret);
return ret;
}
id = id_h << 8 | id_l;
if (id != SC210IOT_CHIP_ID) {
dev_err(sc210iot->dev, "sensor id: %04X mismatched\n", id);
return -ENODEV;
}
dev_info(sc210iot->dev, "Detected SC210IOT sensor\n");
return 0;
}
static void sc210iot_get_module_inf(struct sc210iot *sc210iot,
struct rkmodule_inf *inf)
{
memset(inf, 0, sizeof(*inf));
strlcpy(inf->base.lens, sc210iot->len_name, sizeof(inf->base.lens));
strlcpy(inf->base.sensor, SC210IOT_NAME, sizeof(inf->base.sensor));
strlcpy(inf->base.module, sc210iot->module_name, sizeof(inf->base.module));
}
static long sc210iot_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
struct rkmodule_hdr_cfg *hdr_cfg;
long ret = 0;
u32 stream = 0;
switch (cmd) {
case RKMODULE_GET_HDR_CFG:
hdr_cfg = (struct rkmodule_hdr_cfg *)arg;
hdr_cfg->esp.mode = HDR_NORMAL_VC;
hdr_cfg->hdr_mode = sc210iot->cur_mode->hdr_mode;
break;
case RKMODULE_GET_MODULE_INFO:
sc210iot_get_module_inf(sc210iot, (struct rkmodule_inf *)arg);
break;
case RKMODULE_SET_HDR_CFG:
break;
case RKMODULE_SET_QUICK_STREAM:
stream = *((u32 *)arg);
if (stream)
ret = sc210iot_write_reg(sc210iot,
SC210IOT_REG_CTRL_MODE,
SC210IOT_MODE_STREAMING);
else
ret = sc210iot_write_reg(sc210iot,
SC210IOT_REG_CTRL_MODE,
SC210IOT_MODE_SW_STANDBY);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
static int __sc210iot_start_stream(struct sc210iot *sc210iot)
{
int ret = 0;
if (!sc210iot->is_thunderboot) {
ret = regmap_multi_reg_write(sc210iot->regmap,
sc210iot->cur_mode->reg_list,
sc210iot->cur_mode->reg_num);
if (ret)
return ret;
}
__v4l2_ctrl_handler_setup(&sc210iot->ctrl_handler);
return sc210iot_write_reg(sc210iot,
SC210IOT_REG_CTRL_MODE,
SC210IOT_MODE_STREAMING);
}
static int __sc210iot_stop_stream(struct sc210iot *sc210iot)
{
sc210iot->has_init_exp = false;
if (sc210iot->is_thunderboot)
sc210iot->is_first_streamoff = true;
return sc210iot_write_reg(sc210iot, SC210IOT_REG_CTRL_MODE,
SC210IOT_MODE_SW_STANDBY);
}
#ifdef CONFIG_COMPAT
static long sc210iot_compat_ioctl32(struct v4l2_subdev *sd,
unsigned int cmd, unsigned long arg)
{
void __user *up = compat_ptr(arg);
struct rkmodule_inf *inf;
struct rkmodule_hdr_cfg *hdr;
long ret = 0;
u32 stream = 0;
switch (cmd) {
case RKMODULE_GET_MODULE_INFO:
inf = kzalloc(sizeof(*inf), GFP_KERNEL);
if (!inf) {
ret = -ENOMEM;
return ret;
}
ret = sc210iot_ioctl(sd, cmd, inf);
if (!ret) {
ret = copy_to_user(up, inf, sizeof(*inf));
if (ret)
ret = -EFAULT;
}
kfree(inf);
break;
case RKMODULE_GET_HDR_CFG:
hdr = kzalloc(sizeof(*hdr), GFP_KERNEL);
if (!hdr) {
ret = -ENOMEM;
return ret;
}
ret = sc210iot_ioctl(sd, cmd, hdr);
if (!ret) {
ret = copy_to_user(up, hdr, sizeof(*hdr));
if (ret)
ret = -EFAULT;
}
kfree(hdr);
break;
case RKMODULE_SET_QUICK_STREAM:
ret = copy_from_user(&stream, up, sizeof(u32));
if (!ret)
ret = sc210iot_ioctl(sd, cmd, &stream);
else
ret = -EFAULT;
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
#endif
static int sc210iot_s_stream(struct v4l2_subdev *sd, int on)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
int ret = 0;
mutex_lock(&sc210iot->lock);
on = !!on;
if (on == sc210iot->streaming)
goto unlock_and_return;
if (on) {
if (sc210iot->is_thunderboot && rkisp_tb_get_state() == RKISP_TB_NG) {
sc210iot->is_thunderboot = false;
__sc210iot_power_on(sc210iot);
}
ret = pm_runtime_get_sync(sc210iot->dev);
if (ret < 0) {
pm_runtime_put_noidle(sc210iot->dev);
goto unlock_and_return;
}
ret = __sc210iot_start_stream(sc210iot);
if (ret) {
dev_err(sc210iot->dev, "Failed to start sc210iot stream\n");
pm_runtime_put(sc210iot->dev);
goto unlock_and_return;
}
} else {
__sc210iot_stop_stream(sc210iot);
pm_runtime_put(sc210iot->dev);
}
sc210iot->streaming = on;
unlock_and_return:
mutex_unlock(&sc210iot->lock);
return 0;
}
static int sc210iot_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *fi)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
const struct sc210iot_mode *mode = sc210iot->cur_mode;
if (sc210iot->streaming)
fi->interval = sc210iot->cur_fps;
else
fi->interval = mode->max_fps;
return 0;
}
static int sc210iot_g_mbus_config(struct v4l2_subdev *sd, unsigned int pad_id,
struct v4l2_mbus_config *config)
{
config->type = V4L2_MBUS_CSI2_DPHY;
config->bus.mipi_csi2.num_data_lanes = SC210IOT_LANES;
return 0;
}
static int sc210iot_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 = SC210IOT_MEDIA_BUS_FMT;
return 0;
}
static int sc210iot_enum_frame_sizes(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
if (fse->index >= sc210iot->cfg_num)
return -EINVAL;
if (fse->code != SC210IOT_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 sc210iot_enum_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval_enum *fie)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
if (fie->index >= sc210iot->cfg_num)
return -EINVAL;
fie->code = SC210IOT_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;
fie->reserved[0] = supported_modes[fie->index].hdr_mode;
return 0;
}
static int sc210iot_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
const struct sc210iot_mode *mode;
s64 h_blank, vblank_def;
mutex_lock(&sc210iot->lock);
mode = v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes),
width, height,
fmt->format.width, fmt->format.height);
fmt->format.code = SC210IOT_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(&sc210iot->lock);
return -ENOTTY;
#endif
} else {
sc210iot->cur_mode = mode;
__v4l2_ctrl_s_ctrl(sc210iot->link_freq, mode->link_freq_index);
__v4l2_ctrl_s_ctrl_int64(sc210iot->pixel_rate,
to_pixel_rate(mode->link_freq_index));
h_blank = mode->hts_def - mode->width;
__v4l2_ctrl_modify_range(sc210iot->hblank, h_blank,
h_blank, 1, h_blank);
vblank_def = mode->vts_def - mode->height;
__v4l2_ctrl_modify_range(sc210iot->vblank, vblank_def,
SC210IOT_VTS_MAX - mode->height,
1, vblank_def);
sc210iot->cur_fps = mode->max_fps;
sc210iot->cur_vts = mode->vts_def;
}
mutex_unlock(&sc210iot->lock);
return 0;
}
static int sc210iot_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
const struct sc210iot_mode *mode = sc210iot->cur_mode;
mutex_lock(&sc210iot->lock);
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(&sc210iot->lock);
return -ENOTTY;
#endif
} else {
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = SC210IOT_MEDIA_BUS_FMT;
fmt->format.field = V4L2_FIELD_NONE;
fmt->reserved[0] = mode->vc[PAD0];
}
mutex_unlock(&sc210iot->lock);
return 0;
}
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static int sc210iot_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(sd, fh->state, 0);
const struct sc210iot_mode *def_mode = &supported_modes[0];
mutex_lock(&sc210iot->lock);
/* Initialize try_fmt */
try_fmt->width = def_mode->width;
try_fmt->height = def_mode->height;
try_fmt->code = SC210IOT_MEDIA_BUS_FMT;
try_fmt->field = V4L2_FIELD_NONE;
mutex_unlock(&sc210iot->lock);
return 0;
}
#endif
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static const struct v4l2_subdev_internal_ops sc210iot_internal_ops = {
.open = sc210iot_open,
};
#endif
static int sc210iot_s_power(struct v4l2_subdev *sd, int on)
{
struct sc210iot *sc210iot = to_sc210iot(sd);
int ret = 0;
mutex_lock(&sc210iot->lock);
if (sc210iot->power_on == !!on)
goto unlock_and_return;
if (on) {
ret = pm_runtime_get_sync(sc210iot->dev);
if (ret < 0) {
pm_runtime_put_noidle(sc210iot->dev);
goto unlock_and_return;
}
if (!sc210iot->is_thunderboot) {
ret |= sc210iot_write_reg(sc210iot,
SC210IOT_SOFTWARE_RESET_REG, 0x01);
usleep_range(100, 200);
}
sc210iot->power_on = true;
} else {
pm_runtime_put(sc210iot->dev);
sc210iot->power_on = false;
}
unlock_and_return:
mutex_unlock(&sc210iot->lock);
return ret;
}
static const struct v4l2_subdev_core_ops sc210iot_core_ops = {
.s_power = sc210iot_s_power,
.ioctl = sc210iot_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = sc210iot_compat_ioctl32,
#endif
};
static const struct v4l2_subdev_video_ops sc210iot_video_ops = {
.s_stream = sc210iot_s_stream,
.g_frame_interval = sc210iot_g_frame_interval,
};
static const struct v4l2_subdev_pad_ops sc210iot_pad_ops = {
.enum_mbus_code = sc210iot_enum_mbus_code,
.enum_frame_size = sc210iot_enum_frame_sizes,
.enum_frame_interval = sc210iot_enum_frame_interval,
.get_fmt = sc210iot_get_fmt,
.set_fmt = sc210iot_set_fmt,
.get_mbus_config = sc210iot_g_mbus_config,
};
static const struct v4l2_subdev_ops sc210iot_subdev_ops = {
.core = &sc210iot_core_ops,
.video = &sc210iot_video_ops,
.pad = &sc210iot_pad_ops,
};
static int sc210iot_runtime_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct sc210iot *sc210iot = to_sc210iot(sd);
__sc210iot_power_on(sc210iot);
return 0;
}
static int sc210iot_runtime_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct sc210iot *sc210iot = to_sc210iot(sd);
__sc210iot_power_off(sc210iot);
return 0;
}
static const struct dev_pm_ops sc210iot_pm_ops = {
SET_RUNTIME_PM_OPS(sc210iot_runtime_suspend,
sc210iot_runtime_resume, NULL)
};
static int sc210iot_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device_node *node = dev->of_node;
struct sc210iot *sc210iot;
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);
sc210iot = devm_kzalloc(dev, sizeof(*sc210iot), GFP_KERNEL);
if (!sc210iot)
return -ENOMEM;
sc210iot->dev = dev;
sc210iot->regmap = devm_regmap_init_i2c(client, &sc210iot_regmap_config);
if (IS_ERR(sc210iot->regmap)) {
dev_err(dev, "Failed to initialize I2C\n");
return -ENODEV;
}
ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
&sc210iot->module_index);
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
&sc210iot->module_facing);
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
&sc210iot->module_name);
ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
&sc210iot->len_name);
if (ret) {
dev_err(dev, "Failed to get module information\n");
return -EINVAL;
}
sc210iot->is_thunderboot = IS_ENABLED(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP);
sc210iot->xvclk = devm_clk_get(sc210iot->dev, "xvclk");
if (IS_ERR(sc210iot->xvclk)) {
dev_err(sc210iot->dev, "Failed to get xvclk\n");
return -EINVAL;
}
sc210iot->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_ASIS);
if (IS_ERR(sc210iot->reset_gpio))
dev_warn(dev, "Failed to get reset-gpios\n");
sc210iot->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_ASIS);
if (IS_ERR(sc210iot->pwdn_gpio))
dev_warn(dev, "Failed to get pwdn-gpios\n");
ret = sc210iot_get_regulators(sc210iot);
if (ret) {
dev_err(dev, "Failed to get regulators\n");
return ret;
}
sc210iot->pinctrl = devm_pinctrl_get(dev);
if (!IS_ERR(sc210iot->pinctrl)) {
sc210iot->pins_default =
pinctrl_lookup_state(sc210iot->pinctrl,
OF_CAMERA_PINCTRL_STATE_DEFAULT);
if (IS_ERR(sc210iot->pins_default))
dev_info(dev, "could not get default pinstate\n");
sc210iot->pins_sleep =
pinctrl_lookup_state(sc210iot->pinctrl,
OF_CAMERA_PINCTRL_STATE_SLEEP);
if (IS_ERR(sc210iot->pins_sleep))
dev_info(dev, "could not get sleep pinstate\n");
} else {
dev_info(dev, "no pinctrl\n");
}
mutex_init(&sc210iot->lock);
/* set default mode */
sc210iot->cur_mode = &supported_modes[0];
sc210iot->cfg_num = ARRAY_SIZE(supported_modes);
sd = &sc210iot->subdev;
v4l2_i2c_subdev_init(sd, client, &sc210iot_subdev_ops);
ret = sc210iot_initialize_controls(sc210iot);
if (ret)
goto err_destroy_mutex;
ret = __sc210iot_power_on(sc210iot);
if (ret)
goto err_free_handler;
ret = sc210iot_check_sensor_id(sc210iot);
if (ret)
goto err_power_off;
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
sd->internal_ops = &sc210iot_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
#endif
#ifdef CONFIG_MEDIA_CONTROLLER
sc210iot->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &sc210iot->pad);
if (ret < 0)
goto err_power_off;
#endif
memset(facing, 0, sizeof(facing));
if (strcmp(sc210iot->module_facing, "back") == 0)
facing[0] = 'b';
else
facing[0] = 'f';
snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
sc210iot->module_index, facing,
SC210IOT_NAME, dev_name(sd->dev));
ret = v4l2_async_register_subdev_sensor(sd);
if (ret) {
dev_err(dev, "Failed to register v4l2 async subdev\n");
goto err_clean_entity;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_idle(dev);
return 0;
err_clean_entity:
#ifdef CONFIG_MEDIA_CONTROLLER
media_entity_cleanup(&sd->entity);
#endif
err_power_off:
__sc210iot_power_off(sc210iot);
err_free_handler:
v4l2_ctrl_handler_free(&sc210iot->ctrl_handler);
err_destroy_mutex:
mutex_destroy(&sc210iot->lock);
return ret;
}
static void sc210iot_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct sc210iot *sc210iot = to_sc210iot(sd);
v4l2_async_unregister_subdev(sd);
#ifdef CONFIG_MEDIA_CONTROLLER
media_entity_cleanup(&sd->entity);
#endif
v4l2_ctrl_handler_free(&sc210iot->ctrl_handler);
mutex_destroy(&sc210iot->lock);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
__sc210iot_power_off(sc210iot);
pm_runtime_set_suspended(&client->dev);
}
static const struct i2c_device_id sc210iot_match_id[] = {
{ "sc210iot", 0 },
{ },
};
static const struct of_device_id sc210iot_of_match[] = {
{ .compatible = "smartsens,sc210iot" },
{},
};
MODULE_DEVICE_TABLE(of, sc210iot_of_match);
static struct i2c_driver sc210iot_i2c_driver = {
.driver = {
.name = SC210IOT_NAME,
.pm = &sc210iot_pm_ops,
.of_match_table = of_match_ptr(sc210iot_of_match),
},
.probe = &sc210iot_probe,
.remove = &sc210iot_remove,
.id_table = sc210iot_match_id,
};
static int __init sensor_mod_init(void)
{
return i2c_add_driver(&sc210iot_i2c_driver);
}
static void __exit sensor_mod_exit(void)
{
i2c_del_driver(&sc210iot_i2c_driver);
}
device_initcall_sync(sensor_mod_init);
module_exit(sensor_mod_exit);
MODULE_DESCRIPTION("Smartsens sc210iot Image Sensor driver");
MODULE_LICENSE("GPL v2");
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