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linux/drivers/media/i2c/mt9v032.c
Uwe Kleine-König ed5c2f5fd1 i2c: Make remove callback return void 
The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/*
Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5
Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860
Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes
Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-16 12:46:26 +02:00

1309 lines
36 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for MT9V022, MT9V024, MT9V032, and MT9V034 CMOS Image Sensors
*
* Copyright (C) 2010, Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*
* Based on the MT9M001 driver,
*
* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/log2.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/v4l2-mediabus.h>
#include <linux/module.h>
#include <media/i2c/mt9v032.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
/* The first four rows are black rows. The active area spans 753x481 pixels. */
#define MT9V032_PIXEL_ARRAY_HEIGHT 485
#define MT9V032_PIXEL_ARRAY_WIDTH 753
#define MT9V032_SYSCLK_FREQ_DEF 26600000
#define MT9V032_CHIP_VERSION 0x00
#define MT9V032_CHIP_ID_REV1 0x1311
#define MT9V032_CHIP_ID_REV3 0x1313
#define MT9V034_CHIP_ID_REV1 0X1324
#define MT9V032_COLUMN_START 0x01
#define MT9V032_COLUMN_START_MIN 1
#define MT9V032_COLUMN_START_DEF 1
#define MT9V032_COLUMN_START_MAX 752
#define MT9V032_ROW_START 0x02
#define MT9V032_ROW_START_MIN 4
#define MT9V032_ROW_START_DEF 5
#define MT9V032_ROW_START_MAX 482
#define MT9V032_WINDOW_HEIGHT 0x03
#define MT9V032_WINDOW_HEIGHT_MIN 1
#define MT9V032_WINDOW_HEIGHT_DEF 480
#define MT9V032_WINDOW_HEIGHT_MAX 480
#define MT9V032_WINDOW_WIDTH 0x04
#define MT9V032_WINDOW_WIDTH_MIN 1
#define MT9V032_WINDOW_WIDTH_DEF 752
#define MT9V032_WINDOW_WIDTH_MAX 752
#define MT9V032_HORIZONTAL_BLANKING 0x05
#define MT9V032_HORIZONTAL_BLANKING_MIN 43
#define MT9V034_HORIZONTAL_BLANKING_MIN 61
#define MT9V032_HORIZONTAL_BLANKING_DEF 94
#define MT9V032_HORIZONTAL_BLANKING_MAX 1023
#define MT9V032_VERTICAL_BLANKING 0x06
#define MT9V032_VERTICAL_BLANKING_MIN 4
#define MT9V034_VERTICAL_BLANKING_MIN 2
#define MT9V032_VERTICAL_BLANKING_DEF 45
#define MT9V032_VERTICAL_BLANKING_MAX 3000
#define MT9V034_VERTICAL_BLANKING_MAX 32288
#define MT9V032_CHIP_CONTROL 0x07
#define MT9V032_CHIP_CONTROL_MASTER_MODE (1 << 3)
#define MT9V032_CHIP_CONTROL_DOUT_ENABLE (1 << 7)
#define MT9V032_CHIP_CONTROL_SEQUENTIAL (1 << 8)
#define MT9V032_SHUTTER_WIDTH1 0x08
#define MT9V032_SHUTTER_WIDTH2 0x09
#define MT9V032_SHUTTER_WIDTH_CONTROL 0x0a
#define MT9V032_TOTAL_SHUTTER_WIDTH 0x0b
#define MT9V032_TOTAL_SHUTTER_WIDTH_MIN 1
#define MT9V034_TOTAL_SHUTTER_WIDTH_MIN 0
#define MT9V032_TOTAL_SHUTTER_WIDTH_DEF 480
#define MT9V032_TOTAL_SHUTTER_WIDTH_MAX 32767
#define MT9V034_TOTAL_SHUTTER_WIDTH_MAX 32765
#define MT9V032_RESET 0x0c
#define MT9V032_READ_MODE 0x0d
#define MT9V032_READ_MODE_ROW_BIN_MASK (3 << 0)
#define MT9V032_READ_MODE_ROW_BIN_SHIFT 0
#define MT9V032_READ_MODE_COLUMN_BIN_MASK (3 << 2)
#define MT9V032_READ_MODE_COLUMN_BIN_SHIFT 2
#define MT9V032_READ_MODE_ROW_FLIP (1 << 4)
#define MT9V032_READ_MODE_COLUMN_FLIP (1 << 5)
#define MT9V032_READ_MODE_DARK_COLUMNS (1 << 6)
#define MT9V032_READ_MODE_DARK_ROWS (1 << 7)
#define MT9V032_READ_MODE_RESERVED 0x0300
#define MT9V032_PIXEL_OPERATION_MODE 0x0f
#define MT9V034_PIXEL_OPERATION_MODE_HDR (1 << 0)
#define MT9V034_PIXEL_OPERATION_MODE_COLOR (1 << 1)
#define MT9V032_PIXEL_OPERATION_MODE_COLOR (1 << 2)
#define MT9V032_PIXEL_OPERATION_MODE_HDR (1 << 6)
#define MT9V032_ANALOG_GAIN 0x35
#define MT9V032_ANALOG_GAIN_MIN 16
#define MT9V032_ANALOG_GAIN_DEF 16
#define MT9V032_ANALOG_GAIN_MAX 64
#define MT9V032_MAX_ANALOG_GAIN 0x36
#define MT9V032_MAX_ANALOG_GAIN_MAX 127
#define MT9V032_FRAME_DARK_AVERAGE 0x42
#define MT9V032_DARK_AVG_THRESH 0x46
#define MT9V032_DARK_AVG_LOW_THRESH_MASK (255 << 0)
#define MT9V032_DARK_AVG_LOW_THRESH_SHIFT 0
#define MT9V032_DARK_AVG_HIGH_THRESH_MASK (255 << 8)
#define MT9V032_DARK_AVG_HIGH_THRESH_SHIFT 8
#define MT9V032_ROW_NOISE_CORR_CONTROL 0x70
#define MT9V034_ROW_NOISE_CORR_ENABLE (1 << 0)
#define MT9V034_ROW_NOISE_CORR_USE_BLK_AVG (1 << 1)
#define MT9V032_ROW_NOISE_CORR_ENABLE (1 << 5)
#define MT9V032_ROW_NOISE_CORR_USE_BLK_AVG (1 << 7)
#define MT9V032_PIXEL_CLOCK 0x74
#define MT9V034_PIXEL_CLOCK 0x72
#define MT9V032_PIXEL_CLOCK_INV_LINE (1 << 0)
#define MT9V032_PIXEL_CLOCK_INV_FRAME (1 << 1)
#define MT9V032_PIXEL_CLOCK_XOR_LINE (1 << 2)
#define MT9V032_PIXEL_CLOCK_CONT_LINE (1 << 3)
#define MT9V032_PIXEL_CLOCK_INV_PXL_CLK (1 << 4)
#define MT9V032_TEST_PATTERN 0x7f
#define MT9V032_TEST_PATTERN_DATA_MASK (1023 << 0)
#define MT9V032_TEST_PATTERN_DATA_SHIFT 0
#define MT9V032_TEST_PATTERN_USE_DATA (1 << 10)
#define MT9V032_TEST_PATTERN_GRAY_MASK (3 << 11)
#define MT9V032_TEST_PATTERN_GRAY_NONE (0 << 11)
#define MT9V032_TEST_PATTERN_GRAY_VERTICAL (1 << 11)
#define MT9V032_TEST_PATTERN_GRAY_HORIZONTAL (2 << 11)
#define MT9V032_TEST_PATTERN_GRAY_DIAGONAL (3 << 11)
#define MT9V032_TEST_PATTERN_ENABLE (1 << 13)
#define MT9V032_TEST_PATTERN_FLIP (1 << 14)
#define MT9V032_AEGC_DESIRED_BIN 0xa5
#define MT9V032_AEC_UPDATE_FREQUENCY 0xa6
#define MT9V032_AEC_LPF 0xa8
#define MT9V032_AGC_UPDATE_FREQUENCY 0xa9
#define MT9V032_AGC_LPF 0xaa
#define MT9V032_AEC_AGC_ENABLE 0xaf
#define MT9V032_AEC_ENABLE (1 << 0)
#define MT9V032_AGC_ENABLE (1 << 1)
#define MT9V034_AEC_MAX_SHUTTER_WIDTH 0xad
#define MT9V032_AEC_MAX_SHUTTER_WIDTH 0xbd
#define MT9V032_THERMAL_INFO 0xc1
enum mt9v032_model {
MT9V032_MODEL_V022_COLOR, /* MT9V022IX7ATC */
MT9V032_MODEL_V022_MONO, /* MT9V022IX7ATM */
MT9V032_MODEL_V024_COLOR, /* MT9V024IA7XTC */
MT9V032_MODEL_V024_MONO, /* MT9V024IA7XTM */
MT9V032_MODEL_V032_COLOR, /* MT9V032C12STM */
MT9V032_MODEL_V032_MONO, /* MT9V032C12STC */
MT9V032_MODEL_V034_COLOR,
MT9V032_MODEL_V034_MONO,
};
struct mt9v032_model_version {
unsigned int version;
const char *name;
};
struct mt9v032_model_data {
unsigned int min_row_time;
unsigned int min_hblank;
unsigned int min_vblank;
unsigned int max_vblank;
unsigned int min_shutter;
unsigned int max_shutter;
unsigned int pclk_reg;
unsigned int aec_max_shutter_reg;
const struct v4l2_ctrl_config * const aec_max_shutter_v4l2_ctrl;
};
struct mt9v032_model_info {
const struct mt9v032_model_data *data;
bool color;
};
static const struct mt9v032_model_version mt9v032_versions[] = {
{ MT9V032_CHIP_ID_REV1, "MT9V022/MT9V032 rev1/2" },
{ MT9V032_CHIP_ID_REV3, "MT9V022/MT9V032 rev3" },
{ MT9V034_CHIP_ID_REV1, "MT9V024/MT9V034 rev1" },
};
struct mt9v032 {
struct v4l2_subdev subdev;
struct media_pad pad;
struct v4l2_mbus_framefmt format;
struct v4l2_rect crop;
unsigned int hratio;
unsigned int vratio;
struct v4l2_ctrl_handler ctrls;
struct {
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *pixel_rate;
};
struct mutex power_lock;
int power_count;
struct regmap *regmap;
struct clk *clk;
struct gpio_desc *reset_gpio;
struct gpio_desc *standby_gpio;
struct mt9v032_platform_data *pdata;
const struct mt9v032_model_info *model;
const struct mt9v032_model_version *version;
u32 sysclk;
u16 aec_agc;
u16 hblank;
struct {
struct v4l2_ctrl *test_pattern;
struct v4l2_ctrl *test_pattern_color;
};
};
static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd)
{
return container_of(sd, struct mt9v032, subdev);
}
static int
mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable)
{
struct regmap *map = mt9v032->regmap;
u16 value = mt9v032->aec_agc;
int ret;
if (enable)
value |= which;
else
value &= ~which;
ret = regmap_write(map, MT9V032_AEC_AGC_ENABLE, value);
if (ret < 0)
return ret;
mt9v032->aec_agc = value;
return 0;
}
static int
mt9v032_update_hblank(struct mt9v032 *mt9v032)
{
struct v4l2_rect *crop = &mt9v032->crop;
unsigned int min_hblank = mt9v032->model->data->min_hblank;
unsigned int hblank;
if (mt9v032->version->version == MT9V034_CHIP_ID_REV1)
min_hblank += (mt9v032->hratio - 1) * 10;
min_hblank = max_t(int, mt9v032->model->data->min_row_time - crop->width,
min_hblank);
hblank = max_t(unsigned int, mt9v032->hblank, min_hblank);
return regmap_write(mt9v032->regmap, MT9V032_HORIZONTAL_BLANKING,
hblank);
}
static int mt9v032_power_on(struct mt9v032 *mt9v032)
{
struct regmap *map = mt9v032->regmap;
int ret;
gpiod_set_value_cansleep(mt9v032->reset_gpio, 1);
ret = clk_set_rate(mt9v032->clk, mt9v032->sysclk);
if (ret < 0)
return ret;
/* System clock has to be enabled before releasing the reset */
ret = clk_prepare_enable(mt9v032->clk);
if (ret)
return ret;
udelay(1);
if (mt9v032->reset_gpio) {
gpiod_set_value_cansleep(mt9v032->reset_gpio, 0);
/* After releasing reset we need to wait 10 clock cycles
* before accessing the sensor over I2C. As the minimum SYSCLK
* frequency is 13MHz, waiting 1µs will be enough in the worst
* case.
*/
udelay(1);
}
/* Reset the chip and stop data read out */
ret = regmap_write(map, MT9V032_RESET, 1);
if (ret < 0)
goto err;
ret = regmap_write(map, MT9V032_RESET, 0);
if (ret < 0)
goto err;
ret = regmap_write(map, MT9V032_CHIP_CONTROL,
MT9V032_CHIP_CONTROL_MASTER_MODE);
if (ret < 0)
goto err;
return 0;
err:
clk_disable_unprepare(mt9v032->clk);
return ret;
}
static void mt9v032_power_off(struct mt9v032 *mt9v032)
{
clk_disable_unprepare(mt9v032->clk);
}
static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on)
{
struct regmap *map = mt9v032->regmap;
int ret;
if (!on) {
mt9v032_power_off(mt9v032);
return 0;
}
ret = mt9v032_power_on(mt9v032);
if (ret < 0)
return ret;
/* Configure the pixel clock polarity */
if (mt9v032->pdata && mt9v032->pdata->clk_pol) {
ret = regmap_write(map, mt9v032->model->data->pclk_reg,
MT9V032_PIXEL_CLOCK_INV_PXL_CLK);
if (ret < 0)
return ret;
}
/* Disable the noise correction algorithm and restore the controls. */
ret = regmap_write(map, MT9V032_ROW_NOISE_CORR_CONTROL, 0);
if (ret < 0)
return ret;
return v4l2_ctrl_handler_setup(&mt9v032->ctrls);
}
/* -----------------------------------------------------------------------------
* V4L2 subdev video operations
*/
static struct v4l2_mbus_framefmt *
__mt9v032_get_pad_format(struct mt9v032 *mt9v032,
struct v4l2_subdev_state *sd_state,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(&mt9v032->subdev, sd_state,
pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &mt9v032->format;
default:
return NULL;
}
}
static struct v4l2_rect *
__mt9v032_get_pad_crop(struct mt9v032 *mt9v032,
struct v4l2_subdev_state *sd_state,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_crop(&mt9v032->subdev, sd_state,
pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &mt9v032->crop;
default:
return NULL;
}
}
static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable)
{
const u16 mode = MT9V032_CHIP_CONTROL_DOUT_ENABLE
| MT9V032_CHIP_CONTROL_SEQUENTIAL;
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
struct v4l2_rect *crop = &mt9v032->crop;
struct regmap *map = mt9v032->regmap;
unsigned int hbin;
unsigned int vbin;
int ret;
if (!enable)
return regmap_update_bits(map, MT9V032_CHIP_CONTROL, mode, 0);
/* Configure the window size and row/column bin */
hbin = fls(mt9v032->hratio) - 1;
vbin = fls(mt9v032->vratio) - 1;
ret = regmap_update_bits(map, MT9V032_READ_MODE,
~MT9V032_READ_MODE_RESERVED,
hbin << MT9V032_READ_MODE_COLUMN_BIN_SHIFT |
vbin << MT9V032_READ_MODE_ROW_BIN_SHIFT);
if (ret < 0)
return ret;
ret = regmap_write(map, MT9V032_COLUMN_START, crop->left);
if (ret < 0)
return ret;
ret = regmap_write(map, MT9V032_ROW_START, crop->top);
if (ret < 0)
return ret;
ret = regmap_write(map, MT9V032_WINDOW_WIDTH, crop->width);
if (ret < 0)
return ret;
ret = regmap_write(map, MT9V032_WINDOW_HEIGHT, crop->height);
if (ret < 0)
return ret;
ret = mt9v032_update_hblank(mt9v032);
if (ret < 0)
return ret;
/* Switch to master "normal" mode */
return regmap_update_bits(map, MT9V032_CHIP_CONTROL, mode, mode);
}
static int mt9v032_enum_mbus_code(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
if (code->index > 0)
return -EINVAL;
code->code = mt9v032->format.code;
return 0;
}
static int mt9v032_enum_frame_size(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
if (fse->index >= 3)
return -EINVAL;
if (mt9v032->format.code != fse->code)
return -EINVAL;
fse->min_width = MT9V032_WINDOW_WIDTH_DEF / (1 << fse->index);
fse->max_width = fse->min_width;
fse->min_height = MT9V032_WINDOW_HEIGHT_DEF / (1 << fse->index);
fse->max_height = fse->min_height;
return 0;
}
static int mt9v032_get_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
format->format = *__mt9v032_get_pad_format(mt9v032, sd_state,
format->pad,
format->which);
return 0;
}
static void mt9v032_configure_pixel_rate(struct mt9v032 *mt9v032)
{
struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
int ret;
ret = v4l2_ctrl_s_ctrl_int64(mt9v032->pixel_rate,
mt9v032->sysclk / mt9v032->hratio);
if (ret < 0)
dev_warn(&client->dev, "failed to set pixel rate (%d)\n", ret);
}
static unsigned int mt9v032_calc_ratio(unsigned int input, unsigned int output)
{
/* Compute the power-of-two binning factor closest to the input size to
* output size ratio. Given that the output size is bounded by input/4
* and input, a generic implementation would be an ineffective luxury.
*/
if (output * 3 > input * 2)
return 1;
if (output * 3 > input)
return 2;
return 4;
}
static int mt9v032_set_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
struct v4l2_mbus_framefmt *__format;
struct v4l2_rect *__crop;
unsigned int width;
unsigned int height;
unsigned int hratio;
unsigned int vratio;
__crop = __mt9v032_get_pad_crop(mt9v032, sd_state, format->pad,
format->which);
/* Clamp the width and height to avoid dividing by zero. */
width = clamp(ALIGN(format->format.width, 2),
max_t(unsigned int, __crop->width / 4,
MT9V032_WINDOW_WIDTH_MIN),
__crop->width);
height = clamp(ALIGN(format->format.height, 2),
max_t(unsigned int, __crop->height / 4,
MT9V032_WINDOW_HEIGHT_MIN),
__crop->height);
hratio = mt9v032_calc_ratio(__crop->width, width);
vratio = mt9v032_calc_ratio(__crop->height, height);
__format = __mt9v032_get_pad_format(mt9v032, sd_state, format->pad,
format->which);
__format->width = __crop->width / hratio;
__format->height = __crop->height / vratio;
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
mt9v032->hratio = hratio;
mt9v032->vratio = vratio;
mt9v032_configure_pixel_rate(mt9v032);
}
format->format = *__format;
return 0;
}
static int mt9v032_get_selection(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
sel->r = *__mt9v032_get_pad_crop(mt9v032, sd_state, sel->pad,
sel->which);
return 0;
}
static int mt9v032_set_selection(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
struct v4l2_mbus_framefmt *__format;
struct v4l2_rect *__crop;
struct v4l2_rect rect;
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
/* Clamp the crop rectangle boundaries and align them to a non multiple
* of 2 pixels to ensure a GRBG Bayer pattern.
*/
rect.left = clamp(ALIGN(sel->r.left + 1, 2) - 1,
MT9V032_COLUMN_START_MIN,
MT9V032_COLUMN_START_MAX);
rect.top = clamp(ALIGN(sel->r.top + 1, 2) - 1,
MT9V032_ROW_START_MIN,
MT9V032_ROW_START_MAX);
rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
MT9V032_WINDOW_WIDTH_MIN,
MT9V032_WINDOW_WIDTH_MAX);
rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
MT9V032_WINDOW_HEIGHT_MIN,
MT9V032_WINDOW_HEIGHT_MAX);
rect.width = min_t(unsigned int,
rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left);
rect.height = min_t(unsigned int,
rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top);
__crop = __mt9v032_get_pad_crop(mt9v032, sd_state, sel->pad,
sel->which);
if (rect.width != __crop->width || rect.height != __crop->height) {
/* Reset the output image size if the crop rectangle size has
* been modified.
*/
__format = __mt9v032_get_pad_format(mt9v032, sd_state,
sel->pad,
sel->which);
__format->width = rect.width;
__format->height = rect.height;
if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
mt9v032->hratio = 1;
mt9v032->vratio = 1;
mt9v032_configure_pixel_rate(mt9v032);
}
}
*__crop = rect;
sel->r = rect;
return 0;
}
/* -----------------------------------------------------------------------------
* V4L2 subdev control operations
*/
#define V4L2_CID_TEST_PATTERN_COLOR (V4L2_CID_USER_BASE | 0x1001)
/*
* Value between 1 and 64 to set the desired bin. This is effectively a measure
* of how bright the image is supposed to be. Both AGC and AEC try to reach
* this.
*/
#define V4L2_CID_AEGC_DESIRED_BIN (V4L2_CID_USER_BASE | 0x1002)
/*
* LPF is the low pass filter capability of the chip. Both AEC and AGC have
* this setting. This limits the speed in which AGC/AEC adjust their settings.
* Possible values are 0-2. 0 means no LPF. For 1 and 2 this equation is used:
*
* if |(calculated new exp - current exp)| > (current exp / 4)
* next exp = calculated new exp
* else
* next exp = current exp + ((calculated new exp - current exp) / 2^LPF)
*/
#define V4L2_CID_AEC_LPF (V4L2_CID_USER_BASE | 0x1003)
#define V4L2_CID_AGC_LPF (V4L2_CID_USER_BASE | 0x1004)
/*
* Value between 0 and 15. This is the number of frames being skipped before
* updating the auto exposure/gain.
*/
#define V4L2_CID_AEC_UPDATE_INTERVAL (V4L2_CID_USER_BASE | 0x1005)
#define V4L2_CID_AGC_UPDATE_INTERVAL (V4L2_CID_USER_BASE | 0x1006)
/*
* Maximum shutter width used for AEC.
*/
#define V4L2_CID_AEC_MAX_SHUTTER_WIDTH (V4L2_CID_USER_BASE | 0x1007)
static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct mt9v032 *mt9v032 =
container_of(ctrl->handler, struct mt9v032, ctrls);
struct regmap *map = mt9v032->regmap;
u32 freq;
u16 data;
switch (ctrl->id) {
case V4L2_CID_AUTOGAIN:
return mt9v032_update_aec_agc(mt9v032, MT9V032_AGC_ENABLE,
ctrl->val);
case V4L2_CID_GAIN:
return regmap_write(map, MT9V032_ANALOG_GAIN, ctrl->val);
case V4L2_CID_EXPOSURE_AUTO:
return mt9v032_update_aec_agc(mt9v032, MT9V032_AEC_ENABLE,
!ctrl->val);
case V4L2_CID_EXPOSURE:
return regmap_write(map, MT9V032_TOTAL_SHUTTER_WIDTH,
ctrl->val);
case V4L2_CID_HBLANK:
mt9v032->hblank = ctrl->val;
return mt9v032_update_hblank(mt9v032);
case V4L2_CID_VBLANK:
return regmap_write(map, MT9V032_VERTICAL_BLANKING,
ctrl->val);
case V4L2_CID_PIXEL_RATE:
case V4L2_CID_LINK_FREQ:
if (mt9v032->link_freq == NULL)
break;
freq = mt9v032->pdata->link_freqs[mt9v032->link_freq->val];
*mt9v032->pixel_rate->p_new.p_s64 = freq;
mt9v032->sysclk = freq;
break;
case V4L2_CID_TEST_PATTERN:
switch (mt9v032->test_pattern->val) {
case 0:
data = 0;
break;
case 1:
data = MT9V032_TEST_PATTERN_GRAY_VERTICAL
| MT9V032_TEST_PATTERN_ENABLE;
break;
case 2:
data = MT9V032_TEST_PATTERN_GRAY_HORIZONTAL
| MT9V032_TEST_PATTERN_ENABLE;
break;
case 3:
data = MT9V032_TEST_PATTERN_GRAY_DIAGONAL
| MT9V032_TEST_PATTERN_ENABLE;
break;
default:
data = (mt9v032->test_pattern_color->val <<
MT9V032_TEST_PATTERN_DATA_SHIFT)
| MT9V032_TEST_PATTERN_USE_DATA
| MT9V032_TEST_PATTERN_ENABLE
| MT9V032_TEST_PATTERN_FLIP;
break;
}
return regmap_write(map, MT9V032_TEST_PATTERN, data);
case V4L2_CID_AEGC_DESIRED_BIN:
return regmap_write(map, MT9V032_AEGC_DESIRED_BIN, ctrl->val);
case V4L2_CID_AEC_LPF:
return regmap_write(map, MT9V032_AEC_LPF, ctrl->val);
case V4L2_CID_AGC_LPF:
return regmap_write(map, MT9V032_AGC_LPF, ctrl->val);
case V4L2_CID_AEC_UPDATE_INTERVAL:
return regmap_write(map, MT9V032_AEC_UPDATE_FREQUENCY,
ctrl->val);
case V4L2_CID_AGC_UPDATE_INTERVAL:
return regmap_write(map, MT9V032_AGC_UPDATE_FREQUENCY,
ctrl->val);
case V4L2_CID_AEC_MAX_SHUTTER_WIDTH:
return regmap_write(map,
mt9v032->model->data->aec_max_shutter_reg,
ctrl->val);
}
return 0;
}
static const struct v4l2_ctrl_ops mt9v032_ctrl_ops = {
.s_ctrl = mt9v032_s_ctrl,
};
static const char * const mt9v032_test_pattern_menu[] = {
"Disabled",
"Gray Vertical Shade",
"Gray Horizontal Shade",
"Gray Diagonal Shade",
"Plain",
};
static const struct v4l2_ctrl_config mt9v032_test_pattern_color = {
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_TEST_PATTERN_COLOR,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Test Pattern Color",
.min = 0,
.max = 1023,
.step = 1,
.def = 0,
.flags = 0,
};
static const struct v4l2_ctrl_config mt9v032_aegc_controls[] = {
{
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_AEGC_DESIRED_BIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "AEC/AGC Desired Bin",
.min = 1,
.max = 64,
.step = 1,
.def = 58,
.flags = 0,
}, {
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_AEC_LPF,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "AEC Low Pass Filter",
.min = 0,
.max = 2,
.step = 1,
.def = 0,
.flags = 0,
}, {
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_AGC_LPF,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "AGC Low Pass Filter",
.min = 0,
.max = 2,
.step = 1,
.def = 2,
.flags = 0,
}, {
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_AEC_UPDATE_INTERVAL,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "AEC Update Interval",
.min = 0,
.max = 16,
.step = 1,
.def = 2,
.flags = 0,
}, {
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_AGC_UPDATE_INTERVAL,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "AGC Update Interval",
.min = 0,
.max = 16,
.step = 1,
.def = 2,
.flags = 0,
}
};
static const struct v4l2_ctrl_config mt9v032_aec_max_shutter_width = {
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_AEC_MAX_SHUTTER_WIDTH,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "AEC Max Shutter Width",
.min = 1,
.max = 2047,
.step = 1,
.def = 480,
.flags = 0,
};
static const struct v4l2_ctrl_config mt9v034_aec_max_shutter_width = {
.ops = &mt9v032_ctrl_ops,
.id = V4L2_CID_AEC_MAX_SHUTTER_WIDTH,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "AEC Max Shutter Width",
.min = 1,
.max = 32765,
.step = 1,
.def = 480,
.flags = 0,
};
/* -----------------------------------------------------------------------------
* V4L2 subdev core operations
*/
static int mt9v032_set_power(struct v4l2_subdev *subdev, int on)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
int ret = 0;
mutex_lock(&mt9v032->power_lock);
/* If the power count is modified from 0 to != 0 or from != 0 to 0,
* update the power state.
*/
if (mt9v032->power_count == !on) {
ret = __mt9v032_set_power(mt9v032, !!on);
if (ret < 0)
goto done;
}
/* Update the power count. */
mt9v032->power_count += on ? 1 : -1;
WARN_ON(mt9v032->power_count < 0);
done:
mutex_unlock(&mt9v032->power_lock);
return ret;
}
/* -----------------------------------------------------------------------------
* V4L2 subdev internal operations
*/
static int mt9v032_registered(struct v4l2_subdev *subdev)
{
struct i2c_client *client = v4l2_get_subdevdata(subdev);
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
unsigned int i;
u32 version;
int ret;
dev_info(&client->dev, "Probing MT9V032 at address 0x%02x\n",
client->addr);
ret = mt9v032_power_on(mt9v032);
if (ret < 0) {
dev_err(&client->dev, "MT9V032 power up failed\n");
return ret;
}
/* Read and check the sensor version */
ret = regmap_read(mt9v032->regmap, MT9V032_CHIP_VERSION, &version);
mt9v032_power_off(mt9v032);
if (ret < 0) {
dev_err(&client->dev, "Failed reading chip version\n");
return ret;
}
for (i = 0; i < ARRAY_SIZE(mt9v032_versions); ++i) {
if (mt9v032_versions[i].version == version) {
mt9v032->version = &mt9v032_versions[i];
break;
}
}
if (mt9v032->version == NULL) {
dev_err(&client->dev, "Unsupported chip version 0x%04x\n",
version);
return -ENODEV;
}
dev_info(&client->dev, "%s detected at address 0x%02x\n",
mt9v032->version->name, client->addr);
mt9v032_configure_pixel_rate(mt9v032);
return ret;
}
static int mt9v032_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
{
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
crop = v4l2_subdev_get_try_crop(subdev, fh->state, 0);
crop->left = MT9V032_COLUMN_START_DEF;
crop->top = MT9V032_ROW_START_DEF;
crop->width = MT9V032_WINDOW_WIDTH_DEF;
crop->height = MT9V032_WINDOW_HEIGHT_DEF;
format = v4l2_subdev_get_try_format(subdev, fh->state, 0);
if (mt9v032->model->color)
format->code = MEDIA_BUS_FMT_SGRBG10_1X10;
else
format->code = MEDIA_BUS_FMT_Y10_1X10;
format->width = MT9V032_WINDOW_WIDTH_DEF;
format->height = MT9V032_WINDOW_HEIGHT_DEF;
format->field = V4L2_FIELD_NONE;
format->colorspace = V4L2_COLORSPACE_SRGB;
return mt9v032_set_power(subdev, 1);
}
static int mt9v032_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
{
return mt9v032_set_power(subdev, 0);
}
static const struct v4l2_subdev_core_ops mt9v032_subdev_core_ops = {
.s_power = mt9v032_set_power,
};
static const struct v4l2_subdev_video_ops mt9v032_subdev_video_ops = {
.s_stream = mt9v032_s_stream,
};
static const struct v4l2_subdev_pad_ops mt9v032_subdev_pad_ops = {
.enum_mbus_code = mt9v032_enum_mbus_code,
.enum_frame_size = mt9v032_enum_frame_size,
.get_fmt = mt9v032_get_format,
.set_fmt = mt9v032_set_format,
.get_selection = mt9v032_get_selection,
.set_selection = mt9v032_set_selection,
};
static const struct v4l2_subdev_ops mt9v032_subdev_ops = {
.core = &mt9v032_subdev_core_ops,
.video = &mt9v032_subdev_video_ops,
.pad = &mt9v032_subdev_pad_ops,
};
static const struct v4l2_subdev_internal_ops mt9v032_subdev_internal_ops = {
.registered = mt9v032_registered,
.open = mt9v032_open,
.close = mt9v032_close,
};
static const struct regmap_config mt9v032_regmap_config = {
.reg_bits = 8,
.val_bits = 16,
.max_register = 0xff,
.cache_type = REGCACHE_RBTREE,
};
/* -----------------------------------------------------------------------------
* Driver initialization and probing
*/
static struct mt9v032_platform_data *
mt9v032_get_pdata(struct i2c_client *client)
{
struct mt9v032_platform_data *pdata = NULL;
struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 };
struct device_node *np;
struct property *prop;
if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
return client->dev.platform_data;
np = of_graph_get_next_endpoint(client->dev.of_node, NULL);
if (!np)
return NULL;
if (v4l2_fwnode_endpoint_parse(of_fwnode_handle(np), &endpoint) < 0)
goto done;
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
goto done;
prop = of_find_property(np, "link-frequencies", NULL);
if (prop) {
u64 *link_freqs;
size_t size = prop->length / sizeof(*link_freqs);
link_freqs = devm_kcalloc(&client->dev, size,
sizeof(*link_freqs), GFP_KERNEL);
if (!link_freqs)
goto done;
if (of_property_read_u64_array(np, "link-frequencies",
link_freqs, size) < 0)
goto done;
pdata->link_freqs = link_freqs;
pdata->link_def_freq = link_freqs[0];
}
pdata->clk_pol = !!(endpoint.bus.parallel.flags &
V4L2_MBUS_PCLK_SAMPLE_RISING);
done:
of_node_put(np);
return pdata;
}
static int mt9v032_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct mt9v032_platform_data *pdata = mt9v032_get_pdata(client);
struct mt9v032 *mt9v032;
unsigned int i;
int ret;
mt9v032 = devm_kzalloc(&client->dev, sizeof(*mt9v032), GFP_KERNEL);
if (!mt9v032)
return -ENOMEM;
mt9v032->regmap = devm_regmap_init_i2c(client, &mt9v032_regmap_config);
if (IS_ERR(mt9v032->regmap))
return PTR_ERR(mt9v032->regmap);
mt9v032->clk = devm_clk_get(&client->dev, NULL);
if (IS_ERR(mt9v032->clk))
return PTR_ERR(mt9v032->clk);
mt9v032->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
GPIOD_OUT_HIGH);
if (IS_ERR(mt9v032->reset_gpio))
return PTR_ERR(mt9v032->reset_gpio);
mt9v032->standby_gpio = devm_gpiod_get_optional(&client->dev, "standby",
GPIOD_OUT_LOW);
if (IS_ERR(mt9v032->standby_gpio))
return PTR_ERR(mt9v032->standby_gpio);
mutex_init(&mt9v032->power_lock);
mt9v032->pdata = pdata;
mt9v032->model = (const void *)did->driver_data;
v4l2_ctrl_handler_init(&mt9v032->ctrls, 11 +
ARRAY_SIZE(mt9v032_aegc_controls));
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_GAIN, MT9V032_ANALOG_GAIN_MIN,
MT9V032_ANALOG_GAIN_MAX, 1, MT9V032_ANALOG_GAIN_DEF);
v4l2_ctrl_new_std_menu(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0,
V4L2_EXPOSURE_AUTO);
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_EXPOSURE, mt9v032->model->data->min_shutter,
mt9v032->model->data->max_shutter, 1,
MT9V032_TOTAL_SHUTTER_WIDTH_DEF);
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_HBLANK, mt9v032->model->data->min_hblank,
MT9V032_HORIZONTAL_BLANKING_MAX, 1,
MT9V032_HORIZONTAL_BLANKING_DEF);
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_VBLANK, mt9v032->model->data->min_vblank,
mt9v032->model->data->max_vblank, 1,
MT9V032_VERTICAL_BLANKING_DEF);
mt9v032->test_pattern = v4l2_ctrl_new_std_menu_items(&mt9v032->ctrls,
&mt9v032_ctrl_ops, V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(mt9v032_test_pattern_menu) - 1, 0, 0,
mt9v032_test_pattern_menu);
mt9v032->test_pattern_color = v4l2_ctrl_new_custom(&mt9v032->ctrls,
&mt9v032_test_pattern_color, NULL);
v4l2_ctrl_new_custom(&mt9v032->ctrls,
mt9v032->model->data->aec_max_shutter_v4l2_ctrl,
NULL);
for (i = 0; i < ARRAY_SIZE(mt9v032_aegc_controls); ++i)
v4l2_ctrl_new_custom(&mt9v032->ctrls, &mt9v032_aegc_controls[i],
NULL);
v4l2_ctrl_cluster(2, &mt9v032->test_pattern);
mt9v032->pixel_rate =
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
if (pdata && pdata->link_freqs) {
unsigned int def = 0;
for (i = 0; pdata->link_freqs[i]; ++i) {
if (pdata->link_freqs[i] == pdata->link_def_freq)
def = i;
}
mt9v032->link_freq =
v4l2_ctrl_new_int_menu(&mt9v032->ctrls,
&mt9v032_ctrl_ops,
V4L2_CID_LINK_FREQ, i - 1, def,
pdata->link_freqs);
v4l2_ctrl_cluster(2, &mt9v032->link_freq);
}
mt9v032->subdev.ctrl_handler = &mt9v032->ctrls;
if (mt9v032->ctrls.error) {
dev_err(&client->dev, "control initialization error %d\n",
mt9v032->ctrls.error);
ret = mt9v032->ctrls.error;
goto err;
}
mt9v032->crop.left = MT9V032_COLUMN_START_DEF;
mt9v032->crop.top = MT9V032_ROW_START_DEF;
mt9v032->crop.width = MT9V032_WINDOW_WIDTH_DEF;
mt9v032->crop.height = MT9V032_WINDOW_HEIGHT_DEF;
if (mt9v032->model->color)
mt9v032->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
else
mt9v032->format.code = MEDIA_BUS_FMT_Y10_1X10;
mt9v032->format.width = MT9V032_WINDOW_WIDTH_DEF;
mt9v032->format.height = MT9V032_WINDOW_HEIGHT_DEF;
mt9v032->format.field = V4L2_FIELD_NONE;
mt9v032->format.colorspace = V4L2_COLORSPACE_SRGB;
mt9v032->hratio = 1;
mt9v032->vratio = 1;
mt9v032->aec_agc = MT9V032_AEC_ENABLE | MT9V032_AGC_ENABLE;
mt9v032->hblank = MT9V032_HORIZONTAL_BLANKING_DEF;
mt9v032->sysclk = MT9V032_SYSCLK_FREQ_DEF;
v4l2_i2c_subdev_init(&mt9v032->subdev, client, &mt9v032_subdev_ops);
mt9v032->subdev.internal_ops = &mt9v032_subdev_internal_ops;
mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
mt9v032->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR;
mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&mt9v032->subdev.entity, 1, &mt9v032->pad);
if (ret < 0)
goto err;
mt9v032->subdev.dev = &client->dev;
ret = v4l2_async_register_subdev(&mt9v032->subdev);
if (ret < 0)
goto err;
return 0;
err:
media_entity_cleanup(&mt9v032->subdev.entity);
v4l2_ctrl_handler_free(&mt9v032->ctrls);
return ret;
}
static void mt9v032_remove(struct i2c_client *client)
{
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
v4l2_async_unregister_subdev(subdev);
v4l2_ctrl_handler_free(&mt9v032->ctrls);
media_entity_cleanup(&subdev->entity);
}
static const struct mt9v032_model_data mt9v032_model_data[] = {
{
/* MT9V022, MT9V032 revisions 1/2/3 */
.min_row_time = 660,
.min_hblank = MT9V032_HORIZONTAL_BLANKING_MIN,
.min_vblank = MT9V032_VERTICAL_BLANKING_MIN,
.max_vblank = MT9V032_VERTICAL_BLANKING_MAX,
.min_shutter = MT9V032_TOTAL_SHUTTER_WIDTH_MIN,
.max_shutter = MT9V032_TOTAL_SHUTTER_WIDTH_MAX,
.pclk_reg = MT9V032_PIXEL_CLOCK,
.aec_max_shutter_reg = MT9V032_AEC_MAX_SHUTTER_WIDTH,
.aec_max_shutter_v4l2_ctrl = &mt9v032_aec_max_shutter_width,
}, {
/* MT9V024, MT9V034 */
.min_row_time = 690,
.min_hblank = MT9V034_HORIZONTAL_BLANKING_MIN,
.min_vblank = MT9V034_VERTICAL_BLANKING_MIN,
.max_vblank = MT9V034_VERTICAL_BLANKING_MAX,
.min_shutter = MT9V034_TOTAL_SHUTTER_WIDTH_MIN,
.max_shutter = MT9V034_TOTAL_SHUTTER_WIDTH_MAX,
.pclk_reg = MT9V034_PIXEL_CLOCK,
.aec_max_shutter_reg = MT9V034_AEC_MAX_SHUTTER_WIDTH,
.aec_max_shutter_v4l2_ctrl = &mt9v034_aec_max_shutter_width,
},
};
static const struct mt9v032_model_info mt9v032_models[] = {
[MT9V032_MODEL_V022_COLOR] = {
.data = &mt9v032_model_data[0],
.color = true,
},
[MT9V032_MODEL_V022_MONO] = {
.data = &mt9v032_model_data[0],
.color = false,
},
[MT9V032_MODEL_V024_COLOR] = {
.data = &mt9v032_model_data[1],
.color = true,
},
[MT9V032_MODEL_V024_MONO] = {
.data = &mt9v032_model_data[1],
.color = false,
},
[MT9V032_MODEL_V032_COLOR] = {
.data = &mt9v032_model_data[0],
.color = true,
},
[MT9V032_MODEL_V032_MONO] = {
.data = &mt9v032_model_data[0],
.color = false,
},
[MT9V032_MODEL_V034_COLOR] = {
.data = &mt9v032_model_data[1],
.color = true,
},
[MT9V032_MODEL_V034_MONO] = {
.data = &mt9v032_model_data[1],
.color = false,
},
};
static const struct i2c_device_id mt9v032_id[] = {
{ "mt9v022", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V022_COLOR] },
{ "mt9v022m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V022_MONO] },
{ "mt9v024", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V024_COLOR] },
{ "mt9v024m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V024_MONO] },
{ "mt9v032", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V032_COLOR] },
{ "mt9v032m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V032_MONO] },
{ "mt9v034", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V034_COLOR] },
{ "mt9v034m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V034_MONO] },
{ }
};
MODULE_DEVICE_TABLE(i2c, mt9v032_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id mt9v032_of_match[] = {
{ .compatible = "aptina,mt9v022" },
{ .compatible = "aptina,mt9v022m" },
{ .compatible = "aptina,mt9v024" },
{ .compatible = "aptina,mt9v024m" },
{ .compatible = "aptina,mt9v032" },
{ .compatible = "aptina,mt9v032m" },
{ .compatible = "aptina,mt9v034" },
{ .compatible = "aptina,mt9v034m" },
{ /* Sentinel */ }
};
MODULE_DEVICE_TABLE(of, mt9v032_of_match);
#endif
static struct i2c_driver mt9v032_driver = {
.driver = {
.name = "mt9v032",
.of_match_table = of_match_ptr(mt9v032_of_match),
},
.probe = mt9v032_probe,
.remove = mt9v032_remove,
.id_table = mt9v032_id,
};
module_i2c_driver(mt9v032_driver);
MODULE_DESCRIPTION("Aptina MT9V032 Camera driver");
MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
MODULE_LICENSE("GPL");
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