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V4L/DVB (10669): ov772x: Add image flip support 

o ov772x_camera_info :: flags supports default image flip.
o V4L2_CID_VFLIP/HFLIP supports image flip for user side.
Thank Magnus for advice.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
hifive-unleashed-5.1
Kuninori Morimoto 2009-02-23 12:12:58 -03:00 committed by Mauro Carvalho Chehab
parent 66b46e68a5
commit 051489119a
2 changed files with 89 additions and 4 deletions
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88
drivers/media/video/ov772x.c
View File

@ -217,10 +217,11 @@
#define OCAP_4x 0x03 /* 4x */
/* COM3 */
#define SWAP_MASK 0x38
#define SWAP_MASK (SWAP_RGB | SWAP_YUV | SWAP_ML)
#define IMG_MASK (VFLIP_IMG | HFLIP_IMG)
#define VFIMG_ON_OFF 0x80 /* Vertical flip image ON/OFF selection */
#define HMIMG_ON_OFF 0x40 /* Horizontal mirror image ON/OFF selection */
#define VFLIP_IMG 0x80 /* Vertical flip image ON/OFF selection */
#define HFLIP_IMG 0x40 /* Horizontal mirror image ON/OFF selection */
#define SWAP_RGB 0x20 /* Swap B/R output sequence in RGB mode */
#define SWAP_YUV 0x10 /* Swap Y/UV output sequence in YUV mode */
#define SWAP_ML 0x08 /* Swap output MSB/LSB */
@ -395,6 +396,8 @@ struct ov772x_priv {
const struct ov772x_color_format *fmt;
const struct ov772x_win_size *win;
int model;
unsigned int flag_vflip:1;
unsigned int flag_hflip:1;
};
#define ENDMARKER { 0xff, 0xff }
@ -540,6 +543,27 @@ static const struct ov772x_win_size ov772x_win_qvga = {
.regs = ov772x_qvga_regs,
};
static const struct v4l2_queryctrl ov772x_controls[] = {
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Flip Vertically",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Flip Horizontally",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
};
/*
* general function
@ -650,6 +674,49 @@ static unsigned long ov772x_query_bus_param(struct soc_camera_device *icd)
return soc_camera_apply_sensor_flags(icl, flags);
}
static int ov772x_get_control(struct soc_camera_device *icd,
struct v4l2_control *ctrl)
{
struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
switch (ctrl->id) {
case V4L2_CID_VFLIP:
ctrl->value = priv->flag_vflip;
break;
case V4L2_CID_HFLIP:
ctrl->value = priv->flag_hflip;
break;
}
return 0;
}
static int ov772x_set_control(struct soc_camera_device *icd,
struct v4l2_control *ctrl)
{
struct ov772x_priv *priv = container_of(icd, struct ov772x_priv, icd);
int ret = 0;
u8 val;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
val = ctrl->value ? VFLIP_IMG : 0x00;
priv->flag_vflip = ctrl->value;
if (priv->info->flags & OV772X_FLAG_VFLIP)
val ^= VFLIP_IMG;
ret = ov772x_mask_set(priv->client, COM3, VFLIP_IMG, val);
break;
case V4L2_CID_HFLIP:
val = ctrl->value ? HFLIP_IMG : 0x00;
priv->flag_hflip = ctrl->value;
if (priv->info->flags & OV772X_FLAG_HFLIP)
val ^= HFLIP_IMG;
ret = ov772x_mask_set(priv->client, COM3, HFLIP_IMG, val);
break;
}
return ret;
}
static int ov772x_get_chip_id(struct soc_camera_device *icd,
struct v4l2_dbg_chip_ident *id)
{
@ -768,8 +835,17 @@ static int ov772x_set_fmt(struct soc_camera_device *icd,
* set COM3
*/
val = priv->fmt->com3;
if (priv->info->flags & OV772X_FLAG_VFLIP)
val |= VFLIP_IMG;
if (priv->info->flags & OV772X_FLAG_HFLIP)
val |= HFLIP_IMG;
if (priv->flag_vflip)
val ^= VFLIP_IMG;
if (priv->flag_hflip)
val ^= HFLIP_IMG;
ret = ov772x_mask_set(priv->client,
COM3, SWAP_MASK, val);
COM3, SWAP_MASK | IMG_MASK, val);
if (ret < 0)
goto ov772x_set_fmt_error;
@ -887,6 +963,10 @@ static struct soc_camera_ops ov772x_ops = {
.try_fmt = ov772x_try_fmt,
.set_bus_param = ov772x_set_bus_param,
.query_bus_param = ov772x_query_bus_param,
.controls = ov772x_controls,
.num_controls = ARRAY_SIZE(ov772x_controls),
.get_control = ov772x_get_control,
.set_control = ov772x_set_control,
.get_chip_id = ov772x_get_chip_id,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.get_register = ov772x_get_register,

5
include/media/ov772x.h
View File

@ -13,8 +13,13 @@
#include <media/soc_camera.h>
/* for flags */
#define OV772X_FLAG_VFLIP 0x00000001 /* Vertical flip image */
#define OV772X_FLAG_HFLIP 0x00000002 /* Horizontal flip image */
struct ov772x_camera_info {
unsigned long buswidth;
unsigned long flags;
struct soc_camera_link link;
};