[v9.1] media: imx258: Add imx258 camera sensor driver

Commit Message

Yeh, Andy March 16, 2018, 4:38 p.m. UTC

From: Jason Chen <[e-mail]>

Add a V4L2 sub-device driver for the Sony IMX258 image sensor.
This is a camera sensor using the I2C bus for control and the
CSI-2 bus for data.

Signed-off-by: Andy Yeh <[e-mail]>
Signed-off-by: Alan Chiang <[e-mail]>
---
since v2:
-- Update the streaming function to remove SW_STANDBY in the beginning.
-- Adjust the delay time from 1ms to 12ms before set stream-on register.
since v3:
-- fix the sd.entity to make code be compiled on the mainline kernel.
since v4:
-- Enabled AG, DG, and Exposure time control correctly.
since v5:
-- Sensor vendor provided a new setting to fix different CLK issue
-- Add one more resolution for 1048x780, used for VGA streaming
since v6:
-- improved i2c read/write function to support writing 2 registers
-- modified i2c reg read/write function with a more portable way
-- utilized v4l2_find_nearest_size instead of the local find_best_fit function
-- defined an enum for the link freq entries for explicit indexing
since v7:
-- Removed usleep due to sufficient delay implemented in coreboot
-- Added handling for VBLANK control that auto frame-line-control is enabled
since v8:
-- Fix some error return and intents
since v9:
-- Fix a typo (fmr -> fmt)


 MAINTAINERS                |    7 +
 drivers/media/i2c/Kconfig  |   11 +
 drivers/media/i2c/Makefile |    1 +
 drivers/media/i2c/imx258.c | 1296 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 1315 insertions(+)
 create mode 100644 drivers/media/i2c/imx258.c

Comments

kernel test robot March 19, 2018, 10:09 p.m. UTC | #1

Hi Jason,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc6 next-20180319]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Andy-Yeh/media-imx258-Add-imx258-camera-sensor-driver/20180319-082217
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/media//i2c/imx258.c: In function 'imx258_set_pad_format':
   drivers/media//i2c/imx258.c:870:9: error: implicit declaration of function 'v4l2_find_nearest_size'; did you mean 'v4l2_find_nearest_format'? [-Werror=implicit-function-declaration]
     mode = v4l2_find_nearest_size(
            ^~~~~~~~~~~~~~~~~~~~~~
            v4l2_find_nearest_format
   drivers/media//i2c/imx258.c:871:200: error: 'width' undeclared (first use in this function)
      supported_modes, ARRAY_SIZE(supported_modes), width, height,
                                                                                                                                                                                                           ^    
   drivers/media//i2c/imx258.c:871:200: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/media//i2c/imx258.c:871:207: error: 'height' undeclared (first use in this function); did you mean '__iget'?
      supported_modes, ARRAY_SIZE(supported_modes), width, height,
                                                                                                                                                                                                                  ^     
                                                                                                                                                                                                                  __iget
   cc1: some warnings being treated as errors

vim +871 drivers/media//i2c/imx258.c

   851	
   852	static int imx258_set_pad_format(struct v4l2_subdev *sd,
   853			       struct v4l2_subdev_pad_config *cfg,
   854			       struct v4l2_subdev_format *fmt)
   855	{
   856		struct imx258 *imx258 = to_imx258(sd);
   857		const struct imx258_mode *mode;
   858		struct v4l2_mbus_framefmt *framefmt;
   859		s32 vblank_def;
   860		s32 vblank_min;
   861		s64 h_blank;
   862		s64 pixel_rate;
   863		s64 link_freq;
   864	
   865		mutex_lock(&imx258->mutex);
   866	
   867		/* Only one raw bayer(GBRG) order is supported */
   868		fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
   869	
 > 870		mode = v4l2_find_nearest_size(
 > 871			supported_modes, ARRAY_SIZE(supported_modes), width, height,
   872			fmt->format.width, fmt->format.height);
   873		imx258_update_pad_format(mode, fmt);
   874		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
   875			framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
   876			*framefmt = fmt->format;
   877		} else {
   878			imx258->cur_mode = mode;
   879			__v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
   880	
   881			link_freq = link_freq_menu_items[mode->link_freq_index];
   882			pixel_rate = link_freq_to_pixel_rate(link_freq);
   883			__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
   884			/* Update limits and set FPS to default */
   885			vblank_def = imx258->cur_mode->vts_def -
   886				     imx258->cur_mode->height;
   887			vblank_min = imx258->cur_mode->vts_min -
   888				     imx258->cur_mode->height;
   889			__v4l2_ctrl_modify_range(
   890				imx258->vblank, vblank_min,
   891				IMX258_VTS_MAX - imx258->cur_mode->height, 1,
   892				vblank_def);
   893			__v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def);
   894			h_blank =
   895				link_freq_configs[mode->link_freq_index].pixels_per_line
   896				 - imx258->cur_mode->width;
   897			__v4l2_ctrl_modify_range(imx258->hblank, h_blank,
   898						 h_blank, 1, h_blank);
   899		}
   900	
   901		mutex_unlock(&imx258->mutex);
   902	
   903		return 0;
   904	}
   905	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Tomasz Figa March 23, 2018, 11:43 a.m. UTC | #2

Hi Andy,

Some issues found when reviewing cherry pick of this patch to Chrome
OS kernel. Please see inline.

On Sat, Mar 17, 2018 at 1:38 AM, Andy Yeh <[e-mail]> wrote:

[snip]

> +       case V4L2_CID_VBLANK:
> +               /*
> +                * Auto Frame Length Line Control is enabled by default.
> +                * Not need control Vblank Register.
> +                */

What is the meaning of this control then? Should it be read-only?

> +               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;
> +

[snip]

> +       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);

There is no code for handling this control in imx258_s_ctrl(). It's
not a correct behavior to register a control, which isn't handled by
the driver. Please either implement the control completely or remove
it.

> +
> +       if (ctrl_hdlr->error) {
> +                               ret = ctrl_hdlr->error;
> +                               dev_err(&client->dev, "%s control init failed (%d)\n",
> +                               __func__, ret);
> +                               goto error;

Something strange happening here with indentation.

Best regards,
Tomasz

Sakari Ailus March 23, 2018, 1:50 p.m. UTC | #3

Hi Tomasz,

On Fri, Mar 23, 2018 at 08:43:50PM +0900, Tomasz Figa wrote:
> Hi Andy,
> 
> Some issues found when reviewing cherry pick of this patch to Chrome
> OS kernel. Please see inline.
> 
> On Sat, Mar 17, 2018 at 1:38 AM, Andy Yeh <[e-mail]> wrote:
> 
> [snip]
> 
> > +       case V4L2_CID_VBLANK:
> > +               /*
> > +                * Auto Frame Length Line Control is enabled by default.
> > +                * Not need control Vblank Register.
> > +                */
> 
> What is the meaning of this control then? Should it be read-only?

The read-only flag is for the uAPI; the control framework still passes
through changes to the control value done using kAPI to the driver.

> 
> > +               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;
> > +
> 
> [snip]
> 
> > +       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);
> 
> There is no code for handling this control in imx258_s_ctrl(). It's
> not a correct behavior to register a control, which isn't handled by
> the driver. Please either implement the control completely or remove
> it.

Indeed.

Tomasz Figa March 23, 2018, 2:08 p.m. UTC | #4

On Fri, Mar 23, 2018 at 10:50 PM, Sakari Ailus
<[e-mail]> wrote:
> Hi Tomasz,
>
> On Fri, Mar 23, 2018 at 08:43:50PM +0900, Tomasz Figa wrote:
>> Hi Andy,
>>
>> Some issues found when reviewing cherry pick of this patch to Chrome
>> OS kernel. Please see inline.
>>
>> On Sat, Mar 17, 2018 at 1:38 AM, Andy Yeh <[e-mail]> wrote:
>>
>> [snip]
>>
>> > +       case V4L2_CID_VBLANK:
>> > +               /*
>> > +                * Auto Frame Length Line Control is enabled by default.
>> > +                * Not need control Vblank Register.
>> > +                */
>>
>> What is the meaning of this control then? Should it be read-only?
>
> The read-only flag is for the uAPI; the control framework still passes
> through changes to the control value done using kAPI to the driver.

The read-only flag is not even set in current code.

Also, I'm not sure about the control framework setting read-only
control. According to the code, it doesn't:
https://elixir.bootlin.com/linux/latest/source/drivers/media/v4l2-core/v4l2-ctrls.c#L2477

Best regards,
Tomasz

Sakari Ailus March 23, 2018, 2:29 p.m. UTC | #5

On Fri, Mar 23, 2018 at 11:08:11PM +0900, Tomasz Figa wrote:
> On Fri, Mar 23, 2018 at 10:50 PM, Sakari Ailus
> <[e-mail]> wrote:
> > Hi Tomasz,
> >
> > On Fri, Mar 23, 2018 at 08:43:50PM +0900, Tomasz Figa wrote:
> >> Hi Andy,
> >>
> >> Some issues found when reviewing cherry pick of this patch to Chrome
> >> OS kernel. Please see inline.
> >>
> >> On Sat, Mar 17, 2018 at 1:38 AM, Andy Yeh <[e-mail]> wrote:
> >>
> >> [snip]
> >>
> >> > +       case V4L2_CID_VBLANK:
> >> > +               /*
> >> > +                * Auto Frame Length Line Control is enabled by default.
> >> > +                * Not need control Vblank Register.
> >> > +                */
> >>
> >> What is the meaning of this control then? Should it be read-only?
> >
> > The read-only flag is for the uAPI; the control framework still passes
> > through changes to the control value done using kAPI to the driver.
> 
> The read-only flag is not even set in current code.

Ah, you're right, it's just hblank... but if the driver doesn't support
setting this control, then it should most likely be read-only. It would
seem like that the driver just updates the control to convey the value to
the user.

> 
> Also, I'm not sure about the control framework setting read-only
> control. According to the code, it doesn't:
> https://elixir.bootlin.com/linux/latest/source/drivers/media/v4l2-core/v4l2-ctrls.c#L2477

If you set the control using e.g. v4l2_ctrl_s_ctrl(), it should end up to
the driver's s_ctrl callback.

Yeh, Andy March 25, 2018, 3:15 p.m. UTC | #6

Hi Tomasz, Sakari,

Thanks for your kindly comments. We will have an internal discussion on VBLANK control implementation to let it be read-only. 

And for test pattern, we will definitely implement it but will remove the item from v4l2 menu first.
However, since in the early stage, we found an issue that if not register TEST_PATTERN V4L2 item in kernel, HAL will crash soon when open camera.
We would like to resolve the issue both in HAL and kernel (removing test pattern) first. 
For test pattern implementation on imx258, it must be needed due to cros-camera-test demands it. Will complete and submit it after full internal verification.


Regards, Andy

-----Original Message-----
From: Sakari Ailus [mailto:[e-mail]] 
Sent: Friday, March 23, 2018 10:30 PM
To: Tomasz Figa <[e-mail]>
Cc: Sakari Ailus <[e-mail]>; Yeh, Andy <[e-mail]>; Linux Media Mailing List <[e-mail]>; Chen, JasonX Z <[e-mail]>; Chiang, AlanX <[e-mail]>; Lai, Jim <[e-mail]>
Subject: Re: [PATCH v9.1] media: imx258: Add imx258 camera sensor driver

On Fri, Mar 23, 2018 at 11:08:11PM +0900, Tomasz Figa wrote:
> On Fri, Mar 23, 2018 at 10:50 PM, Sakari Ailus 
> <[e-mail]> wrote:
> > Hi Tomasz,
> >
> > On Fri, Mar 23, 2018 at 08:43:50PM +0900, Tomasz Figa wrote:
> >> Hi Andy,
> >>
> >> Some issues found when reviewing cherry pick of this patch to 
> >> Chrome OS kernel. Please see inline.
> >>
> >> On Sat, Mar 17, 2018 at 1:38 AM, Andy Yeh <[e-mail]> wrote:
> >>
> >> [snip]
> >>
> >> > +       case V4L2_CID_VBLANK:
> >> > +               /*
> >> > +                * Auto Frame Length Line Control is enabled by default.
> >> > +                * Not need control Vblank Register.
> >> > +                */
> >>
> >> What is the meaning of this control then? Should it be read-only?
> >
> > The read-only flag is for the uAPI; the control framework still 
> > passes through changes to the control value done using kAPI to the driver.
> 
> The read-only flag is not even set in current code.

Ah, you're right, it's just hblank... but if the driver doesn't support setting this control, then it should most likely be read-only. It would seem like that the driver just updates the control to convey the value to the user.

> 
> Also, I'm not sure about the control framework setting read-only 
> control. According to the code, it doesn't:
> https://elixir.bootlin.com/linux/latest/source/drivers/media/v4l2-core
> /v4l2-ctrls.c#L2477

If you set the control using e.g. v4l2_ctrl_s_ctrl(), it should end up to the driver's s_ctrl callback.

--
Regards,

Sakari Ailus
e-mail: [e-mail]

Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index a339bb5..9f75510 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12646,6 +12646,13 @@  S:	Maintained
 F:	drivers/ssb/
 F:	include/linux/ssb/
 
+SONY IMX258 SENSOR DRIVER
+M:	Sakari Ailus <[e-mail]>
+L:	[e-mail]
+T:	git git://linuxtv.org/media_tree.git
+S:	Maintained
+F:	drivers/media/i2c/imx258.c
+
 SONY IMX274 SENSOR DRIVER
 M:	Leon Luo <[e-mail]>
 L:	[e-mail]
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index fd01842..bcd4bf1 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -565,6 +565,17 @@  config VIDEO_APTINA_PLL
 config VIDEO_SMIAPP_PLL
 	tristate
 
+config VIDEO_IMX258
+	tristate "Sony IMX258 sensor support"
+	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+	depends on MEDIA_CAMERA_SUPPORT
+	---help---
+	  This is a Video4Linux2 sensor-level driver for the Sony
+	  IMX258 camera.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called imx258.
+
 config VIDEO_IMX274
 	tristate "Sony IMX274 sensor support"
 	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 1b62639..4bf7d00 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -94,6 +94,7 @@  obj-$(CONFIG_VIDEO_IR_I2C)  += ir-kbd-i2c.o
 obj-$(CONFIG_VIDEO_ML86V7667)	+= ml86v7667.o
 obj-$(CONFIG_VIDEO_OV2659)	+= ov2659.o
 obj-$(CONFIG_VIDEO_TC358743)	+= tc358743.o
+obj-$(CONFIG_VIDEO_IMX258)	+= imx258.o
 obj-$(CONFIG_VIDEO_IMX274)	+= imx274.o
 
 obj-$(CONFIG_SDR_MAX2175) += max2175.o
diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
new file mode 100644
index 0000000..9f1ca6a
--- /dev/null
+++ b/drivers/media/i2c/imx258.c
@@ -0,0 +1,1296 @@ 
+// Copyright (C) 2018 Intel Corporation
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/acpi.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_REG_VTS			0x0340
+#define IMX258_VTS_30FPS		0x0c98
+#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		0x1fff
+#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
+
+/* Orientation */
+#define REG_MIRROR_FLIP_CONTROL	0x0101
+#define REG_CONFIG_MIRROR_FLIP		0x03
+
+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",
+	"Vertical Color Bar Type 1",
+	"Vertical Color Bar Type 2",
+	"Vertical Color Bar Type 3",
+	"Vertical Color Bar Type 4"
+};
+
+/* 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;
+};
+
+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->pad, 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_VBLANK:
+		/*
+		 * Auto Frame Length Line Control is enabled by default.
+		 * Not need control Vblank Register.
+		 */
+		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_pad_config *cfg,
+				  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_pad_config *cfg,
+				   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_pad_config *cfg,
+				     struct v4l2_subdev_format *fmt)
+{
+	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
+		fmt->format = *v4l2_subdev_get_try_format(&imx258->sd, cfg,
+							  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_pad_config *cfg,
+				  struct v4l2_subdev_format *fmt)
+{
+	struct imx258 *imx258 = to_imx258(sd);
+	int ret;
+
+	mutex_lock(&imx258->mutex);
+	ret = __imx258_get_pad_format(imx258, cfg, fmt);
+	mutex_unlock(&imx258->mutex);
+
+	return ret;
+}
+
+static int imx258_set_pad_format(struct v4l2_subdev *sd,
+		       struct v4l2_subdev_pad_config *cfg,
+		       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, cfg, 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_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_get_sync(&client->dev);
+		if (ret < 0) {
+			pm_runtime_put_noidle(&client->dev);
+			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 i2c_client *client = to_i2c_client(dev);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	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 i2c_client *client = to_i2c_client(dev);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	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 exposure_max;
+	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);
+
+	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;
+
+	exposure_max = imx258->cur_mode->vts_def - 8;
+	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_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;
+
+	device_property_read_u32(&client->dev, "clock-frequency", &val);
+	if (val != 19200000)
+		return -EINVAL;
+
+	imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL);
+	if (!imx258)
+		return -ENOMEM;
+
+	/* Initialize subdev */
+	v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
+
+	/* Check module identity */
+	ret = imx258_identify_module(imx258);
+	if (ret)
+		return ret;
+
+	/* Set default mode to max resolution */
+	imx258->cur_mode = &supported_modes[0];
+
+	ret = imx258_init_controls(imx258);
+	if (ret)
+		return ret;
+
+	/* 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_common(&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);
+
+	return ret;
+}
+
+static int 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);
+	pm_runtime_set_suspended(&client->dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops imx258_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(imx258_suspend, imx258_resume)
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id imx258_acpi_ids[] = {
+	{ "SONY258A" },
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(acpi, imx258_acpi_ids);
+#endif
+
+static struct i2c_driver imx258_i2c_driver = {
+	.driver = {
+		.name = "imx258",
+		.pm = &imx258_pm_ops,
+		.acpi_match_table = ACPI_PTR(imx258_acpi_ids),
+	},
+	.probe_new = imx258_probe,
+	.remove = imx258_remove,
+};
+
+module_i2c_driver(imx258_i2c_driver);
+
+MODULE_AUTHOR("Yeh, Andy <[e-mail]>");
+MODULE_AUTHOR("Chiang, Alan <[e-mail]>");
+MODULE_AUTHOR("Chen, Jason <[e-mail]>");
+MODULE_DESCRIPTION("Sony IMX258 sensor driver");
+MODULE_LICENSE("GPL v2");