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Commit b6f50b49 authored by Anatolij Gustschin's avatar Anatolij Gustschin Committed by Mauro Carvalho Chehab
Browse files

[media] mt9v022: set y_skip_top field to zero as default 



Set "y_skip_top" to zero and revise comment as I do not see this line
corruption on two different mt9v022 setups. The first read-out line
is perfectly fine. Add mt9v022 platform data configuring y_skip_top
for platforms that have issues with the first read-out line. Set
y_skip_top to 1 for pcm990 board.

Signed-off-by: default avatarAnatolij Gustschin <agust@denx.de>
Acked-by: default avatarEric Miao <eric.y.miao@gmail.com>
Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent d0bac768

arch/arm/mach-pxa/pcm990-baseboard.c

+6 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <linux/i2c/pxa-i2c.h>

#include <linux/pwm_backlight.h>



#include <media/mt9v022.h>

#include <media/soc_camera.h>



#include <linux/platform_data/camera-pxa.h>
@@ -468,6 +469,10 @@ static struct i2c_board_info __initdata pcm990_i2c_devices[] = { 
	},

};



static struct mt9v022_platform_data mt9v022_pdata = {

	.y_skip_top = 1,

};



static struct i2c_board_info pcm990_camera_i2c[] = {

	{

		I2C_BOARD_INFO("mt9v022", 0x48),
@@ -480,6 +485,7 @@ static struct soc_camera_link iclink[] = { 
	{

		.bus_id			= 0, /* Must match with the camera ID */

		.board_info		= &pcm990_camera_i2c[0],

		.priv			= &mt9v022_pdata,

		.i2c_adapter_id		= 0,

		.query_bus_param	= pcm990_camera_query_bus_param,

		.set_bus_param		= pcm990_camera_set_bus_param,

drivers/media/i2c/soc_camera/mt9v022.c

+5 −3
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/log2.h>

#include <linux/module.h>



#include <media/mt9v022.h>

#include <media/soc_camera.h>

#include <media/soc_mediabus.h>

#include <media/v4l2-subdev.h>
@@ -869,6 +870,7 @@ static int mt9v022_probe(struct i2c_client *client, 
	struct mt9v022 *mt9v022;

	struct soc_camera_link *icl = soc_camera_i2c_to_link(client);

	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);

	struct mt9v022_platform_data *pdata = icl->priv;

	int ret;



	if (!icl) {
@@ -932,10 +934,10 @@ static int mt9v022_probe(struct i2c_client *client, 
	mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT;



	/*

	 * MT9V022 _really_ corrupts the first read out line.

	 * TODO: verify on i.MX31

	 * On some platforms the first read out line is corrupted.

	 * Workaround it by skipping if indicated by platform data.

	 */

	mt9v022->y_skip_top	= 1;

	mt9v022->y_skip_top	= pdata ? pdata->y_skip_top : 0;

	mt9v022->rect.left	= MT9V022_COLUMN_SKIP;

	mt9v022->rect.top	= MT9V022_ROW_SKIP;

	mt9v022->rect.width	= MT9V022_MAX_WIDTH;

include/media/mt9v022.h

0 → 100644
+16 −0
Original line number Diff line number Diff line 
/*

 * mt9v022 sensor

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#ifndef __MT9V022_H__

#define __MT9V022_H__



struct mt9v022_platform_data {

	unsigned short y_skip_top;	/* Lines to skip at the top */

};



#endif