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linux-sg2042/drivers/media/i2c/noon010pc30.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
*
* Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd.
* Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com>
*
* Initial register configuration based on a driver authored by
* HeungJun Kim <riverful.kim@samsung.com>.
*/
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regulator/consumer.h>
#include <media/i2c/noon010pc30.h>
#include <linux/videodev2.h>
#include <linux/module.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-subdev.h>
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Enable module debug trace. Set to 1 to enable.");
#define MODULE_NAME "NOON010PC30"
/*
* Register offsets within a page
* b15..b8 - page id, b7..b0 - register address
*/
#define POWER_CTRL_REG 0x0001
#define PAGEMODE_REG 0x03
#define DEVICE_ID_REG 0x0004
#define NOON010PC30_ID 0x86
#define VDO_CTL_REG(n) (0x0010 + (n))
#define SYNC_CTL_REG 0x0012
/* Window size and position */
#define WIN_ROWH_REG 0x0013
#define WIN_ROWL_REG 0x0014
#define WIN_COLH_REG 0x0015
#define WIN_COLL_REG 0x0016
#define WIN_HEIGHTH_REG 0x0017
#define WIN_HEIGHTL_REG 0x0018
#define WIN_WIDTHH_REG 0x0019
#define WIN_WIDTHL_REG 0x001A
#define HBLANKH_REG 0x001B
#define HBLANKL_REG 0x001C
#define VSYNCH_REG 0x001D
#define VSYNCL_REG 0x001E
/* VSYNC control */
#define VS_CTL_REG(n) (0x00A1 + (n))
/* page 1 */
#define ISP_CTL_REG(n) (0x0110 + (n))
#define YOFS_REG 0x0119
#define DARK_YOFS_REG 0x011A
#define SAT_CTL_REG 0x0120
#define BSAT_REG 0x0121
#define RSAT_REG 0x0122
/* Color correction */
#define CMC_CTL_REG 0x0130
#define CMC_OFSGH_REG 0x0133
#define CMC_OFSGL_REG 0x0135
#define CMC_SIGN_REG 0x0136
#define CMC_GOFS_REG 0x0137
#define CMC_COEF_REG(n) (0x0138 + (n))
#define CMC_OFS_REG(n) (0x0141 + (n))
/* Gamma correction */
#define GMA_CTL_REG 0x0160
#define GMA_COEF_REG(n) (0x0161 + (n))
/* Lens Shading */
#define LENS_CTRL_REG 0x01D0
#define LENS_XCEN_REG 0x01D1
#define LENS_YCEN_REG 0x01D2
#define LENS_RC_REG 0x01D3
#define LENS_GC_REG 0x01D4
#define LENS_BC_REG 0x01D5
#define L_AGON_REG 0x01D6
#define L_AGOFF_REG 0x01D7
/* Page 3 - Auto Exposure */
#define AE_CTL_REG(n) (0x0310 + (n))
#define AE_CTL9_REG 0x032C
#define AE_CTL10_REG 0x032D
#define AE_YLVL_REG 0x031C
#define AE_YTH_REG(n) (0x031D + (n))
#define AE_WGT_REG 0x0326
#define EXP_TIMEH_REG 0x0333
#define EXP_TIMEM_REG 0x0334
#define EXP_TIMEL_REG 0x0335
#define EXP_MMINH_REG 0x0336
#define EXP_MMINL_REG 0x0337
#define EXP_MMAXH_REG 0x0338
#define EXP_MMAXM_REG 0x0339
#define EXP_MMAXL_REG 0x033A
/* Page 4 - Auto White Balance */
#define AWB_CTL_REG(n) (0x0410 + (n))
#define AWB_ENABE 0x80
#define AWB_WGHT_REG 0x0419
#define BGAIN_PAR_REG(n) (0x044F + (n))
/* Manual white balance, when AWB_CTL2[0]=1 */
#define MWB_RGAIN_REG 0x0466
#define MWB_BGAIN_REG 0x0467
/* The token to mark an array end */
#define REG_TERM 0xFFFF
struct noon010_format {
u32 code;
enum v4l2_colorspace colorspace;
u16 ispctl1_reg;
};
struct noon010_frmsize {
u16 width;
u16 height;
int vid_ctl1;
};
static const char * const noon010_supply_name[] = {
"vdd_core", "vddio", "vdda"
};
#define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name)
struct noon010_info {
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_ctrl_handler hdl;
struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
u32 gpio_nreset;
u32 gpio_nstby;
/* Protects the struct members below */
struct mutex lock;
const struct noon010_format *curr_fmt;
const struct noon010_frmsize *curr_win;
unsigned int apply_new_cfg:1;
unsigned int streaming:1;
unsigned int hflip:1;
unsigned int vflip:1;
unsigned int power:1;
u8 i2c_reg_page;
};
struct i2c_regval {
u16 addr;
u16 val;
};
/* Supported resolutions. */
static const struct noon010_frmsize noon010_sizes[] = {
{
.width = 352,
.height = 288,
.vid_ctl1 = 0,
}, {
.width = 176,
.height = 144,
.vid_ctl1 = 0x10,
}, {
.width = 88,
.height = 72,
.vid_ctl1 = 0x20,
},
};
/* Supported pixel formats. */
static const struct noon010_format noon010_formats[] = {
{
.code = MEDIA_BUS_FMT_YUYV8_2X8,
.colorspace = V4L2_COLORSPACE_JPEG,
.ispctl1_reg = 0x03,
}, {
.code = MEDIA_BUS_FMT_YVYU8_2X8,
.colorspace = V4L2_COLORSPACE_JPEG,
.ispctl1_reg = 0x02,
}, {
.code = MEDIA_BUS_FMT_VYUY8_2X8,
.colorspace = V4L2_COLORSPACE_JPEG,
.ispctl1_reg = 0,
}, {
.code = MEDIA_BUS_FMT_UYVY8_2X8,
.colorspace = V4L2_COLORSPACE_JPEG,
.ispctl1_reg = 0x01,
}, {
.code = MEDIA_BUS_FMT_RGB565_2X8_BE,
.colorspace = V4L2_COLORSPACE_JPEG,
.ispctl1_reg = 0x40,
},
};
static const struct i2c_regval noon010_base_regs[] = {
{ WIN_COLL_REG, 0x06 }, { HBLANKL_REG, 0x7C },
/* Color corection and saturation */
{ ISP_CTL_REG(0), 0x30 }, { ISP_CTL_REG(2), 0x30 },
{ YOFS_REG, 0x80 }, { DARK_YOFS_REG, 0x04 },
{ SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
{ CMC_CTL_REG, 0x0F }, { CMC_OFSGH_REG, 0x3C },
{ CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x3F },
{ CMC_COEF_REG(0), 0x79 }, { CMC_OFS_REG(0), 0x00 },
{ CMC_COEF_REG(1), 0x39 }, { CMC_OFS_REG(1), 0x00 },
{ CMC_COEF_REG(2), 0x00 }, { CMC_OFS_REG(2), 0x00 },
{ CMC_COEF_REG(3), 0x11 }, { CMC_OFS_REG(3), 0x8B },
{ CMC_COEF_REG(4), 0x65 }, { CMC_OFS_REG(4), 0x07 },
{ CMC_COEF_REG(5), 0x14 }, { CMC_OFS_REG(5), 0x04 },
{ CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x9C },
{ CMC_COEF_REG(7), 0x33 }, { CMC_OFS_REG(7), 0x89 },
{ CMC_COEF_REG(8), 0x74 }, { CMC_OFS_REG(8), 0x25 },
/* Automatic white balance */
{ AWB_CTL_REG(0), 0x78 }, { AWB_CTL_REG(1), 0x2E },
{ AWB_CTL_REG(2), 0x20 }, { AWB_CTL_REG(3), 0x85 },
/* Auto exposure */
{ AE_CTL_REG(0), 0xDC }, { AE_CTL_REG(1), 0x81 },
{ AE_CTL_REG(2), 0x30 }, { AE_CTL_REG(3), 0xA5 },
{ AE_CTL_REG(4), 0x40 }, { AE_CTL_REG(5), 0x51 },
{ AE_CTL_REG(6), 0x33 }, { AE_CTL_REG(7), 0x7E },
{ AE_CTL9_REG, 0x00 }, { AE_CTL10_REG, 0x02 },
{ AE_YLVL_REG, 0x44 }, { AE_YTH_REG(0), 0x34 },
{ AE_YTH_REG(1), 0x30 }, { AE_WGT_REG, 0xD5 },
/* Lens shading compensation */
{ LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
{ LENS_YCEN_REG, 0x70 }, { LENS_RC_REG, 0x53 },
{ LENS_GC_REG, 0x40 }, { LENS_BC_REG, 0x3E },
{ REG_TERM, 0 },
};
static inline struct noon010_info *to_noon010(struct v4l2_subdev *sd)
{
return container_of(sd, struct noon010_info, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct noon010_info, hdl)->sd;
}
static inline int set_i2c_page(struct noon010_info *info,
struct i2c_client *client, unsigned int reg)
{
u32 page = reg >> 8 & 0xFF;
int ret = 0;
if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
if (!ret)
info->i2c_reg_page = page;
}
return ret;
}
static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct noon010_info *info = to_noon010(sd);
int ret = set_i2c_page(info, client, reg_addr);
if (ret)
return ret;
return i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
}
static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct noon010_info *info = to_noon010(sd);
int ret = set_i2c_page(info, client, reg_addr);
if (ret)
return ret;
return i2c_smbus_write_byte_data(client, reg_addr & 0xFF, val);
}
static inline int noon010_bulk_write_reg(struct v4l2_subdev *sd,
const struct i2c_regval *msg)
{
while (msg->addr != REG_TERM) {
int ret = cam_i2c_write(sd, msg->addr, msg->val);
if (ret)
return ret;
msg++;
}
return 0;
}
/* Device reset and sleep mode control */
static int noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep)
{
struct noon010_info *info = to_noon010(sd);
u8 reg = sleep ? 0xF1 : 0xF0;
int ret = 0;
if (reset) {
ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
udelay(20);
}
if (!ret) {
ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
if (reset && !ret)
info->i2c_reg_page = -1;
}
return ret;
}
/* Automatic white balance control */
static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
{
int ret;
ret = cam_i2c_write(sd, AWB_CTL_REG(1), on ? 0x2E : 0x2F);
if (!ret)
ret = cam_i2c_write(sd, AWB_CTL_REG(0), on ? 0xFB : 0x7B);
return ret;
}
/* Called with struct noon010_info.lock mutex held */
static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip)
{
struct noon010_info *info = to_noon010(sd);
int reg, ret;
reg = cam_i2c_read(sd, VDO_CTL_REG(1));
if (reg < 0)
return reg;
reg &= 0x7C;
if (hflip)
reg |= 0x01;
if (vflip)
reg |= 0x02;
ret = cam_i2c_write(sd, VDO_CTL_REG(1), reg | 0x80);
if (!ret) {
info->hflip = hflip;
info->vflip = vflip;
}
return ret;
}
/* Configure resolution and color format */
static int noon010_set_params(struct v4l2_subdev *sd)
{
struct noon010_info *info = to_noon010(sd);
int ret = cam_i2c_write(sd, VDO_CTL_REG(0),
info->curr_win->vid_ctl1);
if (ret)
return ret;
return cam_i2c_write(sd, ISP_CTL_REG(0),
info->curr_fmt->ispctl1_reg);
}
/* Find nearest matching image pixel size. */
static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf,
const struct noon010_frmsize **size)
{
unsigned int min_err = ~0;
int i = ARRAY_SIZE(noon010_sizes);
const struct noon010_frmsize *fsize = &noon010_sizes[0],
*match = NULL;
while (i--) {
int err = abs(fsize->width - mf->width)
+ abs(fsize->height - mf->height);
if (err < min_err) {
min_err = err;
match = fsize;
}
fsize++;
}
if (match) {
mf->width = match->width;
mf->height = match->height;
if (size)
*size = match;
return 0;
}
return -EINVAL;
}
/* Called with info.lock mutex held */
static int power_enable(struct noon010_info *info)
{
int ret;
if (info->power) {
v4l2_info(&info->sd, "%s: sensor is already on\n", __func__);
return 0;
}
if (gpio_is_valid(info->gpio_nstby))
gpio_set_value(info->gpio_nstby, 0);
if (gpio_is_valid(info->gpio_nreset))
gpio_set_value(info->gpio_nreset, 0);
ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply);
if (ret)
return ret;
if (gpio_is_valid(info->gpio_nreset)) {
msleep(50);
gpio_set_value(info->gpio_nreset, 1);
}
if (gpio_is_valid(info->gpio_nstby)) {
udelay(1000);
gpio_set_value(info->gpio_nstby, 1);
}
if (gpio_is_valid(info->gpio_nreset)) {
udelay(1000);
gpio_set_value(info->gpio_nreset, 0);
msleep(100);
gpio_set_value(info->gpio_nreset, 1);
msleep(20);
}
info->power = 1;
v4l2_dbg(1, debug, &info->sd, "%s: sensor is on\n", __func__);
return 0;
}
/* Called with info.lock mutex held */
static int power_disable(struct noon010_info *info)
{
int ret;
if (!info->power) {
v4l2_info(&info->sd, "%s: sensor is already off\n", __func__);
return 0;
}
ret = regulator_bulk_disable(NOON010_NUM_SUPPLIES, info->supply);
if (ret)
return ret;
if (gpio_is_valid(info->gpio_nstby))
gpio_set_value(info->gpio_nstby, 0);
if (gpio_is_valid(info->gpio_nreset))
gpio_set_value(info->gpio_nreset, 0);
info->power = 0;
v4l2_dbg(1, debug, &info->sd, "%s: sensor is off\n", __func__);
return 0;
}
static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
struct noon010_info *info = to_noon010(sd);
int ret = 0;
v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
__func__, ctrl->id, ctrl->val);
mutex_lock(&info->lock);
/*
* If the device is not powered up by the host driver do
* not apply any controls to H/W at this time. Instead
* the controls will be restored right after power-up.
*/
if (!info->power)
goto unlock;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
ret = noon010_enable_autowhitebalance(sd, ctrl->val);
break;
case V4L2_CID_BLUE_BALANCE:
ret = cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
break;
case V4L2_CID_RED_BALANCE:
ret = cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
break;
default:
ret = -EINVAL;
}
unlock:
mutex_unlock(&info->lock);
return ret;
}
static int noon010_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index >= ARRAY_SIZE(noon010_formats))
return -EINVAL;
code->code = noon010_formats[code->index].code;
return 0;
}
static int noon010_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct noon010_info *info = to_noon010(sd);
struct v4l2_mbus_framefmt *mf;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
if (cfg) {
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
fmt->format = *mf;
}
return 0;
}
mf = &fmt->format;
mutex_lock(&info->lock);
mf->width = info->curr_win->width;
mf->height = info->curr_win->height;
mf->code = info->curr_fmt->code;
mf->colorspace = info->curr_fmt->colorspace;
mf->field = V4L2_FIELD_NONE;
mutex_unlock(&info->lock);
return 0;
}
/* Return nearest media bus frame format. */
static const struct noon010_format *noon010_try_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
int i = ARRAY_SIZE(noon010_formats);
while (--i)
if (mf->code == noon010_formats[i].code)
break;
mf->code = noon010_formats[i].code;
return &noon010_formats[i];
}
static int noon010_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct noon010_info *info = to_noon010(sd);
const struct noon010_frmsize *size = NULL;
const struct noon010_format *nf;
struct v4l2_mbus_framefmt *mf;
int ret = 0;
nf = noon010_try_fmt(sd, &fmt->format);
noon010_try_frame_size(&fmt->format, &size);
fmt->format.colorspace = V4L2_COLORSPACE_JPEG;
fmt->format.field = V4L2_FIELD_NONE;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
if (cfg) {
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
*mf = fmt->format;
}
return 0;
}
mutex_lock(&info->lock);
if (!info->streaming) {
info->apply_new_cfg = 1;
info->curr_fmt = nf;
info->curr_win = size;
} else {
ret = -EBUSY;
}
mutex_unlock(&info->lock);
return ret;
}
/* Called with struct noon010_info.lock mutex held */
static int noon010_base_config(struct v4l2_subdev *sd)
{
int ret = noon010_bulk_write_reg(sd, noon010_base_regs);
if (!ret)
ret = noon010_set_params(sd);
if (!ret)
ret = noon010_set_flip(sd, 1, 0);
return ret;
}
static int noon010_s_power(struct v4l2_subdev *sd, int on)
{
struct noon010_info *info = to_noon010(sd);
int ret;
mutex_lock(&info->lock);
if (on) {
ret = power_enable(info);
if (!ret)
ret = noon010_base_config(sd);
} else {
noon010_power_ctrl(sd, false, true);
ret = power_disable(info);
}
mutex_unlock(&info->lock);
/* Restore the controls state */
if (!ret && on)
ret = v4l2_ctrl_handler_setup(&info->hdl);
return ret;
}
static int noon010_s_stream(struct v4l2_subdev *sd, int on)
{
struct noon010_info *info = to_noon010(sd);
int ret = 0;
mutex_lock(&info->lock);
if (!info->streaming != !on) {
ret = noon010_power_ctrl(sd, false, !on);
if (!ret)
info->streaming = on;
}
if (!ret && on && info->apply_new_cfg) {
ret = noon010_set_params(sd);
if (!ret)
info->apply_new_cfg = 0;
}
mutex_unlock(&info->lock);
return ret;
}
static int noon010_log_status(struct v4l2_subdev *sd)
{
struct noon010_info *info = to_noon010(sd);
v4l2_ctrl_handler_log_status(&info->hdl, sd->name);
return 0;
}
static int noon010_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(sd, fh->pad, 0);
mf->width = noon010_sizes[0].width;
mf->height = noon010_sizes[0].height;
mf->code = noon010_formats[0].code;
mf->colorspace = V4L2_COLORSPACE_JPEG;
mf->field = V4L2_FIELD_NONE;
return 0;
}
static const struct v4l2_subdev_internal_ops noon010_subdev_internal_ops = {
.open = noon010_open,
};
static const struct v4l2_ctrl_ops noon010_ctrl_ops = {
.s_ctrl = noon010_s_ctrl,
};
static const struct v4l2_subdev_core_ops noon010_core_ops = {
.s_power = noon010_s_power,
.log_status = noon010_log_status,
};
static const struct v4l2_subdev_pad_ops noon010_pad_ops = {
.enum_mbus_code = noon010_enum_mbus_code,
.get_fmt = noon010_get_fmt,
.set_fmt = noon010_set_fmt,
};
static const struct v4l2_subdev_video_ops noon010_video_ops = {
.s_stream = noon010_s_stream,
};
static const struct v4l2_subdev_ops noon010_ops = {
.core = &noon010_core_ops,
.pad = &noon010_pad_ops,
.video = &noon010_video_ops,
};
/* Return 0 if NOON010PC30L sensor type was detected or -ENODEV otherwise. */
static int noon010_detect(struct i2c_client *client, struct noon010_info *info)
{
int ret;
ret = power_enable(info);
if (ret)
return ret;
ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
if (ret < 0)
dev_err(&client->dev, "I2C read failed: 0x%X\n", ret);
power_disable(info);
return ret == NOON010PC30_ID ? 0 : -ENODEV;
}
static int noon010_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct noon010_info *info;
struct v4l2_subdev *sd;
const struct noon010pc30_platform_data *pdata
= client->dev.platform_data;
int ret;
int i;
if (!pdata) {
dev_err(&client->dev, "No platform data!\n");
return -EIO;
}
info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
mutex_init(&info->lock);
sd = &info->sd;
v4l2_i2c_subdev_init(sd, client, &noon010_ops);
/* Static name; NEVER use in new drivers! */
strscpy(sd->name, MODULE_NAME, sizeof(sd->name));
sd->internal_ops = &noon010_subdev_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
v4l2_ctrl_handler_init(&info->hdl, 3);
v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
sd->ctrl_handler = &info->hdl;
ret = info->hdl.error;
if (ret)
goto np_err;
info->i2c_reg_page = -1;
info->gpio_nreset = -EINVAL;
info->gpio_nstby = -EINVAL;
info->curr_fmt = &noon010_formats[0];
info->curr_win = &noon010_sizes[0];
if (gpio_is_valid(pdata->gpio_nreset)) {
ret = devm_gpio_request_one(&client->dev, pdata->gpio_nreset,
GPIOF_OUT_INIT_LOW,
"NOON010PC30 NRST");
if (ret) {
dev_err(&client->dev, "GPIO request error: %d\n", ret);
goto np_err;
}
info->gpio_nreset = pdata->gpio_nreset;
gpio_export(info->gpio_nreset, 0);
}
if (gpio_is_valid(pdata->gpio_nstby)) {
ret = devm_gpio_request_one(&client->dev, pdata->gpio_nstby,
GPIOF_OUT_INIT_LOW,
"NOON010PC30 NSTBY");
if (ret) {
dev_err(&client->dev, "GPIO request error: %d\n", ret);
goto np_err;
}
info->gpio_nstby = pdata->gpio_nstby;
gpio_export(info->gpio_nstby, 0);
}
for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
info->supply[i].supply = noon010_supply_name[i];
ret = devm_regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
info->supply);
if (ret)
goto np_err;
info->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &info->pad);
if (ret < 0)
goto np_err;
ret = noon010_detect(client, info);
if (!ret)
return 0;
np_err:
v4l2_ctrl_handler_free(&info->hdl);
v4l2_device_unregister_subdev(sd);
return ret;
}
static int noon010_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct noon010_info *info = to_noon010(sd);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&info->hdl);
media_entity_cleanup(&sd->entity);
return 0;
}
static const struct i2c_device_id noon010_id[] = {
{ MODULE_NAME, 0 },
{ },
};
MODULE_DEVICE_TABLE(i2c, noon010_id);
static struct i2c_driver noon010_i2c_driver = {
.driver = {
.name = MODULE_NAME
},
.probe = noon010_probe,
.remove = noon010_remove,
.id_table = noon010_id,
};
module_i2c_driver(noon010_i2c_driver);
MODULE_DESCRIPTION("Siliconfile NOON010PC30 camera driver");
MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
MODULE_LICENSE("GPL");
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