From b6f50b49b9712f49c377e9e3587906e27bea39d0 Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Thu, 27 Sep 2012 19:05:27 -0300 Subject: [PATCH] [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: Anatolij Gustschin Acked-by: Eric Miao Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- arch/arm/mach-pxa/pcm990-baseboard.c | 6 ++++++ drivers/media/i2c/soc_camera/mt9v022.c | 8 +++++--- include/media/mt9v022.h | 16 ++++++++++++++++ 3 files changed, 27 insertions(+), 3 deletions(-) create mode 100644 include/media/mt9v022.h diff --git a/arch/arm/mach-pxa/pcm990-baseboard.c b/arch/arm/mach-pxa/pcm990-baseboard.c index 113c57a..fb7f1d1 100644 --- a/arch/arm/mach-pxa/pcm990-baseboard.c +++ b/arch/arm/mach-pxa/pcm990-baseboard.c @@ -26,6 +26,7 @@ #include #include +#include #include #include @@ -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, diff --git a/drivers/media/i2c/soc_camera/mt9v022.c b/drivers/media/i2c/soc_camera/mt9v022.c index 5bc5a92..84d204f 100644 --- a/drivers/media/i2c/soc_camera/mt9v022.c +++ b/drivers/media/i2c/soc_camera/mt9v022.c @@ -15,6 +15,7 @@ #include #include +#include #include #include #include @@ -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; diff --git a/include/media/mt9v022.h b/include/media/mt9v022.h new file mode 100644 index 0000000..4056180 --- /dev/null +++ b/include/media/mt9v022.h @@ -0,0 +1,16 @@ +/* + * 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 -- 2.7.4