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linux/drivers/media/i2c/imx258.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

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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Intel Corporation
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <asm/unaligned.h>
#define IMX258_REG_VALUE_08BIT 1
#define IMX258_REG_VALUE_16BIT 2
#define IMX258_REG_MODE_SELECT 0x0100
#define IMX258_MODE_STANDBY 0x00
#define IMX258_MODE_STREAMING 0x01
/* Chip ID */
#define IMX258_REG_CHIP_ID 0x0016
#define IMX258_CHIP_ID 0x0258
/* V_TIMING internal */
#define IMX258_VTS_30FPS 0x0c50
#define IMX258_VTS_30FPS_2K 0x0638
#define IMX258_VTS_30FPS_VGA 0x034c
#define IMX258_VTS_MAX 0xffff
/*Frame Length Line*/
#define IMX258_FLL_MIN 0x08a6
#define IMX258_FLL_MAX 0xffff
#define IMX258_FLL_STEP 1
#define IMX258_FLL_DEFAULT 0x0c98
/* HBLANK control - read only */
#define IMX258_PPL_DEFAULT 5352
/* Exposure control */
#define IMX258_REG_EXPOSURE 0x0202
#define IMX258_EXPOSURE_MIN 4
#define IMX258_EXPOSURE_STEP 1
#define IMX258_EXPOSURE_DEFAULT 0x640
#define IMX258_EXPOSURE_MAX 65535
/* Analog gain control */
#define IMX258_REG_ANALOG_GAIN 0x0204
#define IMX258_ANA_GAIN_MIN 0
#define IMX258_ANA_GAIN_MAX 480
#define IMX258_ANA_GAIN_STEP 1
#define IMX258_ANA_GAIN_DEFAULT 0x0
/* Digital gain control */
#define IMX258_REG_GR_DIGITAL_GAIN 0x020e
#define IMX258_REG_R_DIGITAL_GAIN 0x0210
#define IMX258_REG_B_DIGITAL_GAIN 0x0212
#define IMX258_REG_GB_DIGITAL_GAIN 0x0214
#define IMX258_DGTL_GAIN_MIN 0
#define IMX258_DGTL_GAIN_MAX 4096 /* Max = 0xFFF */
#define IMX258_DGTL_GAIN_DEFAULT 1024
#define IMX258_DGTL_GAIN_STEP 1
/* HDR control */
#define IMX258_REG_HDR 0x0220
#define IMX258_HDR_ON BIT(0)
#define IMX258_REG_HDR_RATIO 0x0222
#define IMX258_HDR_RATIO_MIN 0
#define IMX258_HDR_RATIO_MAX 5
#define IMX258_HDR_RATIO_STEP 1
#define IMX258_HDR_RATIO_DEFAULT 0x0
/* Test Pattern Control */
#define IMX258_REG_TEST_PATTERN 0x0600
/* Orientation */
#define REG_MIRROR_FLIP_CONTROL 0x0101
#define REG_CONFIG_MIRROR_FLIP 0x03
#define REG_CONFIG_FLIP_TEST_PATTERN 0x02
/* Input clock frequency in Hz */
#define IMX258_INPUT_CLOCK_FREQ 19200000
struct imx258_reg {
u16 address;
u8 val;
};
struct imx258_reg_list {
u32 num_of_regs;
const struct imx258_reg *regs;
};
/* Link frequency config */
struct imx258_link_freq_config {
u32 pixels_per_line;
/* PLL registers for this link frequency */
struct imx258_reg_list reg_list;
};
/* Mode : resolution and related config&values */
struct imx258_mode {
/* Frame width */
u32 width;
/* Frame height */
u32 height;
/* V-timing */
u32 vts_def;
u32 vts_min;
/* Index of Link frequency config to be used */
u32 link_freq_index;
/* Default register values */
struct imx258_reg_list reg_list;
};
/* 4208x3118 needs 1267Mbps/lane, 4 lanes */
static const struct imx258_reg mipi_data_rate_1267mbps[] = {
{ 0x0301, 0x05 },
{ 0x0303, 0x02 },
{ 0x0305, 0x03 },
{ 0x0306, 0x00 },
{ 0x0307, 0xC6 },
{ 0x0309, 0x0A },
{ 0x030B, 0x01 },
{ 0x030D, 0x02 },
{ 0x030E, 0x00 },
{ 0x030F, 0xD8 },
{ 0x0310, 0x00 },
{ 0x0820, 0x13 },
{ 0x0821, 0x4C },
{ 0x0822, 0xCC },
{ 0x0823, 0xCC },
};
static const struct imx258_reg mipi_data_rate_640mbps[] = {
{ 0x0301, 0x05 },
{ 0x0303, 0x02 },
{ 0x0305, 0x03 },
{ 0x0306, 0x00 },
{ 0x0307, 0x64 },
{ 0x0309, 0x0A },
{ 0x030B, 0x01 },
{ 0x030D, 0x02 },
{ 0x030E, 0x00 },
{ 0x030F, 0xD8 },
{ 0x0310, 0x00 },
{ 0x0820, 0x0A },
{ 0x0821, 0x00 },
{ 0x0822, 0x00 },
{ 0x0823, 0x00 },
};
static const struct imx258_reg mode_4208x3118_regs[] = {
{ 0x0136, 0x13 },
{ 0x0137, 0x33 },
{ 0x3051, 0x00 },
{ 0x3052, 0x00 },
{ 0x4E21, 0x14 },
{ 0x6B11, 0xCF },
{ 0x7FF0, 0x08 },
{ 0x7FF1, 0x0F },
{ 0x7FF2, 0x08 },
{ 0x7FF3, 0x1B },
{ 0x7FF4, 0x23 },
{ 0x7FF5, 0x60 },
{ 0x7FF6, 0x00 },
{ 0x7FF7, 0x01 },
{ 0x7FF8, 0x00 },
{ 0x7FF9, 0x78 },
{ 0x7FFA, 0x00 },
{ 0x7FFB, 0x00 },
{ 0x7FFC, 0x00 },
{ 0x7FFD, 0x00 },
{ 0x7FFE, 0x00 },
{ 0x7FFF, 0x03 },
{ 0x7F76, 0x03 },
{ 0x7F77, 0xFE },
{ 0x7FA8, 0x03 },
{ 0x7FA9, 0xFE },
{ 0x7B24, 0x81 },
{ 0x7B25, 0x00 },
{ 0x6564, 0x07 },
{ 0x6B0D, 0x41 },
{ 0x653D, 0x04 },
{ 0x6B05, 0x8C },
{ 0x6B06, 0xF9 },
{ 0x6B08, 0x65 },
{ 0x6B09, 0xFC },
{ 0x6B0A, 0xCF },
{ 0x6B0B, 0xD2 },
{ 0x6700, 0x0E },
{ 0x6707, 0x0E },
{ 0x9104, 0x00 },
{ 0x4648, 0x7F },
{ 0x7420, 0x00 },
{ 0x7421, 0x1C },
{ 0x7422, 0x00 },
{ 0x7423, 0xD7 },
{ 0x5F04, 0x00 },
{ 0x5F05, 0xED },
{ 0x0112, 0x0A },
{ 0x0113, 0x0A },
{ 0x0114, 0x03 },
{ 0x0342, 0x14 },
{ 0x0343, 0xE8 },
{ 0x0340, 0x0C },
{ 0x0341, 0x50 },
{ 0x0344, 0x00 },
{ 0x0345, 0x00 },
{ 0x0346, 0x00 },
{ 0x0347, 0x00 },
{ 0x0348, 0x10 },
{ 0x0349, 0x6F },
{ 0x034A, 0x0C },
{ 0x034B, 0x2E },
{ 0x0381, 0x01 },
{ 0x0383, 0x01 },
{ 0x0385, 0x01 },
{ 0x0387, 0x01 },
{ 0x0900, 0x00 },
{ 0x0901, 0x11 },
{ 0x0401, 0x00 },
{ 0x0404, 0x00 },
{ 0x0405, 0x10 },
{ 0x0408, 0x00 },
{ 0x0409, 0x00 },
{ 0x040A, 0x00 },
{ 0x040B, 0x00 },
{ 0x040C, 0x10 },
{ 0x040D, 0x70 },
{ 0x040E, 0x0C },
{ 0x040F, 0x30 },
{ 0x3038, 0x00 },
{ 0x303A, 0x00 },
{ 0x303B, 0x10 },
{ 0x300D, 0x00 },
{ 0x034C, 0x10 },
{ 0x034D, 0x70 },
{ 0x034E, 0x0C },
{ 0x034F, 0x30 },
{ 0x0350, 0x01 },
{ 0x0202, 0x0C },
{ 0x0203, 0x46 },
{ 0x0204, 0x00 },
{ 0x0205, 0x00 },
{ 0x020E, 0x01 },
{ 0x020F, 0x00 },
{ 0x0210, 0x01 },
{ 0x0211, 0x00 },
{ 0x0212, 0x01 },
{ 0x0213, 0x00 },
{ 0x0214, 0x01 },
{ 0x0215, 0x00 },
{ 0x7BCD, 0x00 },
{ 0x94DC, 0x20 },
{ 0x94DD, 0x20 },
{ 0x94DE, 0x20 },
{ 0x95DC, 0x20 },
{ 0x95DD, 0x20 },
{ 0x95DE, 0x20 },
{ 0x7FB0, 0x00 },
{ 0x9010, 0x3E },
{ 0x9419, 0x50 },
{ 0x941B, 0x50 },
{ 0x9519, 0x50 },
{ 0x951B, 0x50 },
{ 0x3030, 0x00 },
{ 0x3032, 0x00 },
{ 0x0220, 0x00 },
};
static const struct imx258_reg mode_2104_1560_regs[] = {
{ 0x0136, 0x13 },
{ 0x0137, 0x33 },
{ 0x3051, 0x00 },
{ 0x3052, 0x00 },
{ 0x4E21, 0x14 },
{ 0x6B11, 0xCF },
{ 0x7FF0, 0x08 },
{ 0x7FF1, 0x0F },
{ 0x7FF2, 0x08 },
{ 0x7FF3, 0x1B },
{ 0x7FF4, 0x23 },
{ 0x7FF5, 0x60 },
{ 0x7FF6, 0x00 },
{ 0x7FF7, 0x01 },
{ 0x7FF8, 0x00 },
{ 0x7FF9, 0x78 },
{ 0x7FFA, 0x00 },
{ 0x7FFB, 0x00 },
{ 0x7FFC, 0x00 },
{ 0x7FFD, 0x00 },
{ 0x7FFE, 0x00 },
{ 0x7FFF, 0x03 },
{ 0x7F76, 0x03 },
{ 0x7F77, 0xFE },
{ 0x7FA8, 0x03 },
{ 0x7FA9, 0xFE },
{ 0x7B24, 0x81 },
{ 0x7B25, 0x00 },
{ 0x6564, 0x07 },
{ 0x6B0D, 0x41 },
{ 0x653D, 0x04 },
{ 0x6B05, 0x8C },
{ 0x6B06, 0xF9 },
{ 0x6B08, 0x65 },
{ 0x6B09, 0xFC },
{ 0x6B0A, 0xCF },
{ 0x6B0B, 0xD2 },
{ 0x6700, 0x0E },
{ 0x6707, 0x0E },
{ 0x9104, 0x00 },
{ 0x4648, 0x7F },
{ 0x7420, 0x00 },
{ 0x7421, 0x1C },
{ 0x7422, 0x00 },
{ 0x7423, 0xD7 },
{ 0x5F04, 0x00 },
{ 0x5F05, 0xED },
{ 0x0112, 0x0A },
{ 0x0113, 0x0A },
{ 0x0114, 0x03 },
{ 0x0342, 0x14 },
{ 0x0343, 0xE8 },
{ 0x0340, 0x06 },
{ 0x0341, 0x38 },
{ 0x0344, 0x00 },
{ 0x0345, 0x00 },
{ 0x0346, 0x00 },
{ 0x0347, 0x00 },
{ 0x0348, 0x10 },
{ 0x0349, 0x6F },
{ 0x034A, 0x0C },
{ 0x034B, 0x2E },
{ 0x0381, 0x01 },
{ 0x0383, 0x01 },
{ 0x0385, 0x01 },
{ 0x0387, 0x01 },
{ 0x0900, 0x01 },
{ 0x0901, 0x12 },
{ 0x0401, 0x01 },
{ 0x0404, 0x00 },
{ 0x0405, 0x20 },
{ 0x0408, 0x00 },
{ 0x0409, 0x02 },
{ 0x040A, 0x00 },
{ 0x040B, 0x00 },
{ 0x040C, 0x10 },
{ 0x040D, 0x6A },
{ 0x040E, 0x06 },
{ 0x040F, 0x18 },
{ 0x3038, 0x00 },
{ 0x303A, 0x00 },
{ 0x303B, 0x10 },
{ 0x300D, 0x00 },
{ 0x034C, 0x08 },
{ 0x034D, 0x38 },
{ 0x034E, 0x06 },
{ 0x034F, 0x18 },
{ 0x0350, 0x01 },
{ 0x0202, 0x06 },
{ 0x0203, 0x2E },
{ 0x0204, 0x00 },
{ 0x0205, 0x00 },
{ 0x020E, 0x01 },
{ 0x020F, 0x00 },
{ 0x0210, 0x01 },
{ 0x0211, 0x00 },
{ 0x0212, 0x01 },
{ 0x0213, 0x00 },
{ 0x0214, 0x01 },
{ 0x0215, 0x00 },
{ 0x7BCD, 0x01 },
{ 0x94DC, 0x20 },
{ 0x94DD, 0x20 },
{ 0x94DE, 0x20 },
{ 0x95DC, 0x20 },
{ 0x95DD, 0x20 },
{ 0x95DE, 0x20 },
{ 0x7FB0, 0x00 },
{ 0x9010, 0x3E },
{ 0x9419, 0x50 },
{ 0x941B, 0x50 },
{ 0x9519, 0x50 },
{ 0x951B, 0x50 },
{ 0x3030, 0x00 },
{ 0x3032, 0x00 },
{ 0x0220, 0x00 },
};
static const struct imx258_reg mode_1048_780_regs[] = {
{ 0x0136, 0x13 },
{ 0x0137, 0x33 },
{ 0x3051, 0x00 },
{ 0x3052, 0x00 },
{ 0x4E21, 0x14 },
{ 0x6B11, 0xCF },
{ 0x7FF0, 0x08 },
{ 0x7FF1, 0x0F },
{ 0x7FF2, 0x08 },
{ 0x7FF3, 0x1B },
{ 0x7FF4, 0x23 },
{ 0x7FF5, 0x60 },
{ 0x7FF6, 0x00 },
{ 0x7FF7, 0x01 },
{ 0x7FF8, 0x00 },
{ 0x7FF9, 0x78 },
{ 0x7FFA, 0x00 },
{ 0x7FFB, 0x00 },
{ 0x7FFC, 0x00 },
{ 0x7FFD, 0x00 },
{ 0x7FFE, 0x00 },
{ 0x7FFF, 0x03 },
{ 0x7F76, 0x03 },
{ 0x7F77, 0xFE },
{ 0x7FA8, 0x03 },
{ 0x7FA9, 0xFE },
{ 0x7B24, 0x81 },
{ 0x7B25, 0x00 },
{ 0x6564, 0x07 },
{ 0x6B0D, 0x41 },
{ 0x653D, 0x04 },
{ 0x6B05, 0x8C },
{ 0x6B06, 0xF9 },
{ 0x6B08, 0x65 },
{ 0x6B09, 0xFC },
{ 0x6B0A, 0xCF },
{ 0x6B0B, 0xD2 },
{ 0x6700, 0x0E },
{ 0x6707, 0x0E },
{ 0x9104, 0x00 },
{ 0x4648, 0x7F },
{ 0x7420, 0x00 },
{ 0x7421, 0x1C },
{ 0x7422, 0x00 },
{ 0x7423, 0xD7 },
{ 0x5F04, 0x00 },
{ 0x5F05, 0xED },
{ 0x0112, 0x0A },
{ 0x0113, 0x0A },
{ 0x0114, 0x03 },
{ 0x0342, 0x14 },
{ 0x0343, 0xE8 },
{ 0x0340, 0x03 },
{ 0x0341, 0x4C },
{ 0x0344, 0x00 },
{ 0x0345, 0x00 },
{ 0x0346, 0x00 },
{ 0x0347, 0x00 },
{ 0x0348, 0x10 },
{ 0x0349, 0x6F },
{ 0x034A, 0x0C },
{ 0x034B, 0x2E },
{ 0x0381, 0x01 },
{ 0x0383, 0x01 },
{ 0x0385, 0x01 },
{ 0x0387, 0x01 },
{ 0x0900, 0x01 },
{ 0x0901, 0x14 },
{ 0x0401, 0x01 },
{ 0x0404, 0x00 },
{ 0x0405, 0x40 },
{ 0x0408, 0x00 },
{ 0x0409, 0x06 },
{ 0x040A, 0x00 },
{ 0x040B, 0x00 },
{ 0x040C, 0x10 },
{ 0x040D, 0x64 },
{ 0x040E, 0x03 },
{ 0x040F, 0x0C },
{ 0x3038, 0x00 },
{ 0x303A, 0x00 },
{ 0x303B, 0x10 },
{ 0x300D, 0x00 },
{ 0x034C, 0x04 },
{ 0x034D, 0x18 },
{ 0x034E, 0x03 },
{ 0x034F, 0x0C },
{ 0x0350, 0x01 },
{ 0x0202, 0x03 },
{ 0x0203, 0x42 },
{ 0x0204, 0x00 },
{ 0x0205, 0x00 },
{ 0x020E, 0x01 },
{ 0x020F, 0x00 },
{ 0x0210, 0x01 },
{ 0x0211, 0x00 },
{ 0x0212, 0x01 },
{ 0x0213, 0x00 },
{ 0x0214, 0x01 },
{ 0x0215, 0x00 },
{ 0x7BCD, 0x00 },
{ 0x94DC, 0x20 },
{ 0x94DD, 0x20 },
{ 0x94DE, 0x20 },
{ 0x95DC, 0x20 },
{ 0x95DD, 0x20 },
{ 0x95DE, 0x20 },
{ 0x7FB0, 0x00 },
{ 0x9010, 0x3E },
{ 0x9419, 0x50 },
{ 0x941B, 0x50 },
{ 0x9519, 0x50 },
{ 0x951B, 0x50 },
{ 0x3030, 0x00 },
{ 0x3032, 0x00 },
{ 0x0220, 0x00 },
};
static const char * const imx258_test_pattern_menu[] = {
"Disabled",
"Solid Colour",
"Eight Vertical Colour Bars",
"Colour Bars With Fade to Grey",
"Pseudorandom Sequence (PN9)",
};
/* Configurations for supported link frequencies */
#define IMX258_LINK_FREQ_634MHZ 633600000ULL
#define IMX258_LINK_FREQ_320MHZ 320000000ULL
enum {
IMX258_LINK_FREQ_1267MBPS,
IMX258_LINK_FREQ_640MBPS,
};
/*
* pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
* data rate => double data rate; number of lanes => 4; bits per pixel => 10
*/
static u64 link_freq_to_pixel_rate(u64 f)
{
f *= 2 * 4;
do_div(f, 10);
return f;
}
/* Menu items for LINK_FREQ V4L2 control */
static const s64 link_freq_menu_items[] = {
IMX258_LINK_FREQ_634MHZ,
IMX258_LINK_FREQ_320MHZ,
};
/* Link frequency configs */
static const struct imx258_link_freq_config link_freq_configs[] = {
[IMX258_LINK_FREQ_1267MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mipi_data_rate_1267mbps),
.regs = mipi_data_rate_1267mbps,
}
},
[IMX258_LINK_FREQ_640MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mipi_data_rate_640mbps),
.regs = mipi_data_rate_640mbps,
}
},
};
/* Mode configs */
static const struct imx258_mode supported_modes[] = {
{
.width = 4208,
.height = 3118,
.vts_def = IMX258_VTS_30FPS,
.vts_min = IMX258_VTS_30FPS,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_4208x3118_regs),
.regs = mode_4208x3118_regs,
},
.link_freq_index = IMX258_LINK_FREQ_1267MBPS,
},
{
.width = 2104,
.height = 1560,
.vts_def = IMX258_VTS_30FPS_2K,
.vts_min = IMX258_VTS_30FPS_2K,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_2104_1560_regs),
.regs = mode_2104_1560_regs,
},
.link_freq_index = IMX258_LINK_FREQ_640MBPS,
},
{
.width = 1048,
.height = 780,
.vts_def = IMX258_VTS_30FPS_VGA,
.vts_min = IMX258_VTS_30FPS_VGA,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1048_780_regs),
.regs = mode_1048_780_regs,
},
.link_freq_index = IMX258_LINK_FREQ_640MBPS,
},
};
struct imx258 {
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_ctrl_handler ctrl_handler;
/* V4L2 Controls */
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *exposure;
/* Current mode */
const struct imx258_mode *cur_mode;
/*
* Mutex for serialized access:
* Protect sensor module set pad format and start/stop streaming safely.
*/
struct mutex mutex;
/* Streaming on/off */
bool streaming;
struct clk *clk;
};
static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd)
{
return container_of(_sd, struct imx258, sd);
}
/* Read registers up to 2 at a time */
static int imx258_read_reg(struct imx258 *imx258, u16 reg, u32 len, u32 *val)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
struct i2c_msg msgs[2];
u8 addr_buf[2] = { reg >> 8, reg & 0xff };
u8 data_buf[4] = { 0, };
int ret;
if (len > 4)
return -EINVAL;
/* Write register address */
msgs[0].addr = client->addr;
msgs[0].flags = 0;
msgs[0].len = ARRAY_SIZE(addr_buf);
msgs[0].buf = addr_buf;
/* Read data from register */
msgs[1].addr = client->addr;
msgs[1].flags = I2C_M_RD;
msgs[1].len = len;
msgs[1].buf = &data_buf[4 - len];
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret != ARRAY_SIZE(msgs))
return -EIO;
*val = get_unaligned_be32(data_buf);
return 0;
}
/* Write registers up to 2 at a time */
static int imx258_write_reg(struct imx258 *imx258, u16 reg, u32 len, u32 val)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
u8 buf[6];
if (len > 4)
return -EINVAL;
put_unaligned_be16(reg, buf);
put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
if (i2c_master_send(client, buf, len + 2) != len + 2)
return -EIO;
return 0;
}
/* Write a list of registers */
static int imx258_write_regs(struct imx258 *imx258,
const struct imx258_reg *regs, u32 len)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
unsigned int i;
int ret;
for (i = 0; i < len; i++) {
ret = imx258_write_reg(imx258, regs[i].address, 1,
regs[i].val);
if (ret) {
dev_err_ratelimited(
&client->dev,
"Failed to write reg 0x%4.4x. error = %d\n",
regs[i].address, ret);
return ret;
}
}
return 0;
}
/* Open sub-device */
static int imx258_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(sd, fh->state, 0);
/* Initialize try_fmt */
try_fmt->width = supported_modes[0].width;
try_fmt->height = supported_modes[0].height;
try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
try_fmt->field = V4L2_FIELD_NONE;
return 0;
}
static int imx258_update_digital_gain(struct imx258 *imx258, u32 len, u32 val)
{
int ret;
ret = imx258_write_reg(imx258, IMX258_REG_GR_DIGITAL_GAIN,
IMX258_REG_VALUE_16BIT,
val);
if (ret)
return ret;
ret = imx258_write_reg(imx258, IMX258_REG_GB_DIGITAL_GAIN,
IMX258_REG_VALUE_16BIT,
val);
if (ret)
return ret;
ret = imx258_write_reg(imx258, IMX258_REG_R_DIGITAL_GAIN,
IMX258_REG_VALUE_16BIT,
val);
if (ret)
return ret;
ret = imx258_write_reg(imx258, IMX258_REG_B_DIGITAL_GAIN,
IMX258_REG_VALUE_16BIT,
val);
if (ret)
return ret;
return 0;
}
static int imx258_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct imx258 *imx258 =
container_of(ctrl->handler, struct imx258, ctrl_handler);
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
int ret = 0;
/*
* Applying V4L2 control value only happens
* when power is up for streaming
*/
if (pm_runtime_get_if_in_use(&client->dev) == 0)
return 0;
switch (ctrl->id) {
case V4L2_CID_ANALOGUE_GAIN:
ret = imx258_write_reg(imx258, IMX258_REG_ANALOG_GAIN,
IMX258_REG_VALUE_16BIT,
ctrl->val);
break;
case V4L2_CID_EXPOSURE:
ret = imx258_write_reg(imx258, IMX258_REG_EXPOSURE,
IMX258_REG_VALUE_16BIT,
ctrl->val);
break;
case V4L2_CID_DIGITAL_GAIN:
ret = imx258_update_digital_gain(imx258, IMX258_REG_VALUE_16BIT,
ctrl->val);
break;
case V4L2_CID_TEST_PATTERN:
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
IMX258_REG_VALUE_16BIT,
ctrl->val);
ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
IMX258_REG_VALUE_08BIT,
!ctrl->val ? REG_CONFIG_MIRROR_FLIP :
REG_CONFIG_FLIP_TEST_PATTERN);
break;
case V4L2_CID_WIDE_DYNAMIC_RANGE:
if (!ctrl->val) {
ret = imx258_write_reg(imx258, IMX258_REG_HDR,
IMX258_REG_VALUE_08BIT,
IMX258_HDR_RATIO_MIN);
} else {
ret = imx258_write_reg(imx258, IMX258_REG_HDR,
IMX258_REG_VALUE_08BIT,
IMX258_HDR_ON);
if (ret)
break;
ret = imx258_write_reg(imx258, IMX258_REG_HDR_RATIO,
IMX258_REG_VALUE_08BIT,
BIT(IMX258_HDR_RATIO_MAX));
}
break;
default:
dev_info(&client->dev,
"ctrl(id:0x%x,val:0x%x) is not handled\n",
ctrl->id, ctrl->val);
ret = -EINVAL;
break;
}
pm_runtime_put(&client->dev);
return ret;
}
static const struct v4l2_ctrl_ops imx258_ctrl_ops = {
.s_ctrl = imx258_set_ctrl,
};
static int imx258_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
/* Only one bayer order(GRBG) is supported */
if (code->index > 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
return 0;
}
static int imx258_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
if (fse->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
return -EINVAL;
fse->min_width = supported_modes[fse->index].width;
fse->max_width = fse->min_width;
fse->min_height = supported_modes[fse->index].height;
fse->max_height = fse->min_height;
return 0;
}
static void imx258_update_pad_format(const struct imx258_mode *mode,
struct v4l2_subdev_format *fmt)
{
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
fmt->format.field = V4L2_FIELD_NONE;
}
static int __imx258_get_pad_format(struct imx258 *imx258,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
fmt->format = *v4l2_subdev_get_try_format(&imx258->sd,
sd_state,
fmt->pad);
else
imx258_update_pad_format(imx258->cur_mode, fmt);
return 0;
}
static int imx258_get_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct imx258 *imx258 = to_imx258(sd);
int ret;
mutex_lock(&imx258->mutex);
ret = __imx258_get_pad_format(imx258, sd_state, fmt);
mutex_unlock(&imx258->mutex);
return ret;
}
static int imx258_set_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct imx258 *imx258 = to_imx258(sd);
const struct imx258_mode *mode;
struct v4l2_mbus_framefmt *framefmt;
s32 vblank_def;
s32 vblank_min;
s64 h_blank;
s64 pixel_rate;
s64 link_freq;
mutex_lock(&imx258->mutex);
/* Only one raw bayer(GBRG) order is supported */
fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
mode = v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes), width, height,
fmt->format.width, fmt->format.height);
imx258_update_pad_format(mode, fmt);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
*framefmt = fmt->format;
} else {
imx258->cur_mode = mode;
__v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
link_freq = link_freq_menu_items[mode->link_freq_index];
pixel_rate = link_freq_to_pixel_rate(link_freq);
__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
/* Update limits and set FPS to default */
vblank_def = imx258->cur_mode->vts_def -
imx258->cur_mode->height;
vblank_min = imx258->cur_mode->vts_min -
imx258->cur_mode->height;
__v4l2_ctrl_modify_range(
imx258->vblank, vblank_min,
IMX258_VTS_MAX - imx258->cur_mode->height, 1,
vblank_def);
__v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def);
h_blank =
link_freq_configs[mode->link_freq_index].pixels_per_line
- imx258->cur_mode->width;
__v4l2_ctrl_modify_range(imx258->hblank, h_blank,
h_blank, 1, h_blank);
}
mutex_unlock(&imx258->mutex);
return 0;
}
/* Start streaming */
static int imx258_start_streaming(struct imx258 *imx258)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
const struct imx258_reg_list *reg_list;
int ret, link_freq_index;
/* Setup PLL */
link_freq_index = imx258->cur_mode->link_freq_index;
reg_list = &link_freq_configs[link_freq_index].reg_list;
ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
if (ret) {
dev_err(&client->dev, "%s failed to set plls\n", __func__);
return ret;
}
/* Apply default values of current mode */
reg_list = &imx258->cur_mode->reg_list;
ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
if (ret) {
dev_err(&client->dev, "%s failed to set mode\n", __func__);
return ret;
}
/* Set Orientation be 180 degree */
ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
IMX258_REG_VALUE_08BIT, REG_CONFIG_MIRROR_FLIP);
if (ret) {
dev_err(&client->dev, "%s failed to set orientation\n",
__func__);
return ret;
}
/* Apply customized values from user */
ret = __v4l2_ctrl_handler_setup(imx258->sd.ctrl_handler);
if (ret)
return ret;
/* set stream on register */
return imx258_write_reg(imx258, IMX258_REG_MODE_SELECT,
IMX258_REG_VALUE_08BIT,
IMX258_MODE_STREAMING);
}
/* Stop streaming */
static int imx258_stop_streaming(struct imx258 *imx258)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
int ret;
/* set stream off register */
ret = imx258_write_reg(imx258, IMX258_REG_MODE_SELECT,
IMX258_REG_VALUE_08BIT, IMX258_MODE_STANDBY);
if (ret)
dev_err(&client->dev, "%s failed to set stream\n", __func__);
/*
* Return success even if it was an error, as there is nothing the
* caller can do about it.
*/
return 0;
}
static int imx258_power_on(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct imx258 *imx258 = to_imx258(sd);
int ret;
ret = clk_prepare_enable(imx258->clk);
if (ret)
dev_err(dev, "failed to enable clock\n");
return ret;
}
static int imx258_power_off(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct imx258 *imx258 = to_imx258(sd);
clk_disable_unprepare(imx258->clk);
return 0;
}
static int imx258_set_stream(struct v4l2_subdev *sd, int enable)
{
struct imx258 *imx258 = to_imx258(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
mutex_lock(&imx258->mutex);
if (imx258->streaming == enable) {
mutex_unlock(&imx258->mutex);
return 0;
}
if (enable) {
ret = pm_runtime_resume_and_get(&client->dev);
if (ret < 0)
goto err_unlock;
/*
* Apply default & customized values
* and then start streaming.
*/
ret = imx258_start_streaming(imx258);
if (ret)
goto err_rpm_put;
} else {
imx258_stop_streaming(imx258);
pm_runtime_put(&client->dev);
}
imx258->streaming = enable;
mutex_unlock(&imx258->mutex);
return ret;
err_rpm_put:
pm_runtime_put(&client->dev);
err_unlock:
mutex_unlock(&imx258->mutex);
return ret;
}
static int __maybe_unused imx258_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct imx258 *imx258 = to_imx258(sd);
if (imx258->streaming)
imx258_stop_streaming(imx258);
return 0;
}
static int __maybe_unused imx258_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct imx258 *imx258 = to_imx258(sd);
int ret;
if (imx258->streaming) {
ret = imx258_start_streaming(imx258);
if (ret)
goto error;
}
return 0;
error:
imx258_stop_streaming(imx258);
imx258->streaming = 0;
return ret;
}
/* Verify chip ID */
static int imx258_identify_module(struct imx258 *imx258)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
int ret;
u32 val;
ret = imx258_read_reg(imx258, IMX258_REG_CHIP_ID,
IMX258_REG_VALUE_16BIT, &val);
if (ret) {
dev_err(&client->dev, "failed to read chip id %x\n",
IMX258_CHIP_ID);
return ret;
}
if (val != IMX258_CHIP_ID) {
dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
IMX258_CHIP_ID, val);
return -EIO;
}
return 0;
}
static const struct v4l2_subdev_video_ops imx258_video_ops = {
.s_stream = imx258_set_stream,
};
static const struct v4l2_subdev_pad_ops imx258_pad_ops = {
.enum_mbus_code = imx258_enum_mbus_code,
.get_fmt = imx258_get_pad_format,
.set_fmt = imx258_set_pad_format,
.enum_frame_size = imx258_enum_frame_size,
};
static const struct v4l2_subdev_ops imx258_subdev_ops = {
.video = &imx258_video_ops,
.pad = &imx258_pad_ops,
};
static const struct v4l2_subdev_internal_ops imx258_internal_ops = {
.open = imx258_open,
};
/* Initialize control handlers */
static int imx258_init_controls(struct imx258 *imx258)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
struct v4l2_ctrl_handler *ctrl_hdlr;
s64 vblank_def;
s64 vblank_min;
s64 pixel_rate_min;
s64 pixel_rate_max;
int ret;
ctrl_hdlr = &imx258->ctrl_handler;
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
if (ret)
return ret;
mutex_init(&imx258->mutex);
ctrl_hdlr->lock = &imx258->mutex;
imx258->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
&imx258_ctrl_ops,
V4L2_CID_LINK_FREQ,
ARRAY_SIZE(link_freq_menu_items) - 1,
0,
link_freq_menu_items);
if (imx258->link_freq)
imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]);
/* By default, PIXEL_RATE is read only */
imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
V4L2_CID_PIXEL_RATE,
pixel_rate_min, pixel_rate_max,
1, pixel_rate_max);
vblank_def = imx258->cur_mode->vts_def - imx258->cur_mode->height;
vblank_min = imx258->cur_mode->vts_min - imx258->cur_mode->height;
imx258->vblank = v4l2_ctrl_new_std(
ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_VBLANK,
vblank_min,
IMX258_VTS_MAX - imx258->cur_mode->height, 1,
vblank_def);
if (imx258->vblank)
imx258->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
imx258->hblank = v4l2_ctrl_new_std(
ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_HBLANK,
IMX258_PPL_DEFAULT - imx258->cur_mode->width,
IMX258_PPL_DEFAULT - imx258->cur_mode->width,
1,
IMX258_PPL_DEFAULT - imx258->cur_mode->width);
if (imx258->hblank)
imx258->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
imx258->exposure = v4l2_ctrl_new_std(
ctrl_hdlr, &imx258_ctrl_ops,
V4L2_CID_EXPOSURE, IMX258_EXPOSURE_MIN,
IMX258_EXPOSURE_MAX, IMX258_EXPOSURE_STEP,
IMX258_EXPOSURE_DEFAULT);
v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
IMX258_ANA_GAIN_MIN, IMX258_ANA_GAIN_MAX,
IMX258_ANA_GAIN_STEP, IMX258_ANA_GAIN_DEFAULT);
v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
IMX258_DGTL_GAIN_MIN, IMX258_DGTL_GAIN_MAX,
IMX258_DGTL_GAIN_STEP,
IMX258_DGTL_GAIN_DEFAULT);
v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_WIDE_DYNAMIC_RANGE,
0, 1, 1, IMX258_HDR_RATIO_DEFAULT);
v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx258_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(imx258_test_pattern_menu) - 1,
0, 0, imx258_test_pattern_menu);
if (ctrl_hdlr->error) {
ret = ctrl_hdlr->error;
dev_err(&client->dev, "%s control init failed (%d)\n",
__func__, ret);
goto error;
}
imx258->sd.ctrl_handler = ctrl_hdlr;
return 0;
error:
v4l2_ctrl_handler_free(ctrl_hdlr);
mutex_destroy(&imx258->mutex);
return ret;
}
static void imx258_free_controls(struct imx258 *imx258)
{
v4l2_ctrl_handler_free(imx258->sd.ctrl_handler);
mutex_destroy(&imx258->mutex);
}
static int imx258_probe(struct i2c_client *client)
{
struct imx258 *imx258;
int ret;
u32 val = 0;
imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL);
if (!imx258)
return -ENOMEM;
imx258->clk = devm_clk_get_optional(&client->dev, NULL);
if (IS_ERR(imx258->clk))
return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
"error getting clock\n");
if (!imx258->clk) {
dev_dbg(&client->dev,
"no clock provided, using clock-frequency property\n");
device_property_read_u32(&client->dev, "clock-frequency", &val);
} else {
val = clk_get_rate(imx258->clk);
}
if (val != IMX258_INPUT_CLOCK_FREQ) {
dev_err(&client->dev, "input clock frequency not supported\n");
return -EINVAL;
}
/*
* Check that the device is mounted upside down. The driver only
* supports a single pixel order right now.
*/
ret = device_property_read_u32(&client->dev, "rotation", &val);
if (ret || val != 180)
return -EINVAL;
/* Initialize subdev */
v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
/* Will be powered off via pm_runtime_idle */
ret = imx258_power_on(&client->dev);
if (ret)
return ret;
/* Check module identity */
ret = imx258_identify_module(imx258);
if (ret)
goto error_identify;
/* Set default mode to max resolution */
imx258->cur_mode = &supported_modes[0];
ret = imx258_init_controls(imx258);
if (ret)
goto error_identify;
/* Initialize subdev */
imx258->sd.internal_ops = &imx258_internal_ops;
imx258->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
imx258->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
/* Initialize source pad */
imx258->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&imx258->sd.entity, 1, &imx258->pad);
if (ret)
goto error_handler_free;
ret = v4l2_async_register_subdev_sensor(&imx258->sd);
if (ret < 0)
goto error_media_entity;
pm_runtime_set_active(&client->dev);
pm_runtime_enable(&client->dev);
pm_runtime_idle(&client->dev);
return 0;
error_media_entity:
media_entity_cleanup(&imx258->sd.entity);
error_handler_free:
imx258_free_controls(imx258);
error_identify:
imx258_power_off(&client->dev);
return ret;
}
static void imx258_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx258 *imx258 = to_imx258(sd);
v4l2_async_unregister_subdev(sd);
media_entity_cleanup(&sd->entity);
imx258_free_controls(imx258);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
imx258_power_off(&client->dev);
pm_runtime_set_suspended(&client->dev);
}
static const struct dev_pm_ops imx258_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(imx258_suspend, imx258_resume)
SET_RUNTIME_PM_OPS(imx258_power_off, imx258_power_on, NULL)
};
#ifdef CONFIG_ACPI
static const struct acpi_device_id imx258_acpi_ids[] = {
{ "SONY258A" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(acpi, imx258_acpi_ids);
#endif
static const struct of_device_id imx258_dt_ids[] = {
{ .compatible = "sony,imx258" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx258_dt_ids);
static struct i2c_driver imx258_i2c_driver = {
.driver = {
.name = "imx258",
.pm = &imx258_pm_ops,
.acpi_match_table = ACPI_PTR(imx258_acpi_ids),
.of_match_table = imx258_dt_ids,
},
.probe_new = imx258_probe,
.remove = imx258_remove,
};
module_i2c_driver(imx258_i2c_driver);
MODULE_AUTHOR("Yeh, Andy <andy.yeh@intel.com>");
MODULE_AUTHOR("Chiang, Alan");
MODULE_AUTHOR("Chen, Jason");
MODULE_DESCRIPTION("Sony IMX258 sensor driver");
MODULE_LICENSE("GPL v2");
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