Hi Eric
On Fri, 28 Sep 2012, Guennadi Liakhovetski wrote:
> Hi Anatolij
>
> I can take this patch, but we need an ack from a PXA / ARM maintainer.
Could we have your ack, please?
Thanks
Guennadi
> On Fri, 28 Sep 2012, Anatolij Gustschin wrote:
>
> > 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 <agust@xxxxxxx>
> > ---
> > Changes since first version:
> > - add platform data to mt9v022 with only one parameter to initialise
> > y_skip_top, use 0 as default and set it to 1 on pcm990-baseboard.c
> > - revise commit log
> > - rebase on staging/for_v3.7 branch
> >
> > 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 cb723e8..e2973f2 100644
> > --- a/arch/arm/mach-pxa/pcm990-baseboard.c
> > +++ b/arch/arm/mach-pxa/pcm990-baseboard.c
> > @@ -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 <mach/camera.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,
> > diff --git a/drivers/media/i2c/soc_camera/mt9v022.c b/drivers/media/i2c/soc_camera/mt9v022.c
> > index e0f4cb4..8feaddc 100644
> > --- a/drivers/media/i2c/soc_camera/mt9v022.c
> > +++ b/drivers/media/i2c/soc_camera/mt9v022.c
> > @@ -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>
> > @@ -849,6 +850,7 @@ 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) {
> > @@ -912,10 +914,10 @@ 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
> > --
> > 1.7.1
> >
>
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
>
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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