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[media] ov772x: Select the default format at probe time 

The format and window size are only initialized during the first g_fmt
call. This leaves the device in an inconsistent state after
initialization, which will cause problems when implementing pad
operations. Move the format and window size initialization to probe
time.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2012-07-18 10:58:19 -03:00 committed by Mauro Carvalho Chehab
parent edff996eb9
commit ca9ef7fa21
1 changed files with 31 additions and 31 deletions
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62
drivers/media/i2c/soc_camera/ov772x.c
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@ -16,6 +16,7 @@
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
@ -504,20 +505,20 @@ static const struct ov772x_color_format ov772x_cfmts[] = {
#define MAX_WIDTH VGA_WIDTH
#define MAX_HEIGHT VGA_HEIGHT
static const struct ov772x_win_size ov772x_win_vga = {
.name = "VGA",
.width = VGA_WIDTH,
.height = VGA_HEIGHT,
.com7_bit = SLCT_VGA,
.regs = ov772x_vga_regs,
};
static const struct ov772x_win_size ov772x_win_qvga = {
.name = "QVGA",
.width = QVGA_WIDTH,
.height = QVGA_HEIGHT,
.com7_bit = SLCT_QVGA,
.regs = ov772x_qvga_regs,
static const struct ov772x_win_size ov772x_win_sizes[] = {
{
.name = "VGA",
.width = VGA_WIDTH,
.height = VGA_HEIGHT,
.com7_bit = SLCT_VGA,
.regs = ov772x_vga_regs,
}, {
.name = "QVGA",
.width = QVGA_WIDTH,
.height = QVGA_HEIGHT,
.com7_bit = SLCT_QVGA,
.regs = ov772x_qvga_regs,
},
};
/*
@ -693,19 +694,18 @@ static int ov772x_s_power(struct v4l2_subdev *sd, int on)
static const struct ov772x_win_size *ov772x_select_win(u32 width, u32 height)
{
__u32 diff;
const struct ov772x_win_size *win;
const struct ov772x_win_size *win = &ov772x_win_sizes[0];
u32 best_diff = UINT_MAX;
unsigned int i;
/* default is QVGA */
diff = abs(width - ov772x_win_qvga.width) +
abs(height - ov772x_win_qvga.height);
win = &ov772x_win_qvga;
/* VGA */
if (diff >
abs(width - ov772x_win_vga.width) +
abs(height - ov772x_win_vga.height))
win = &ov772x_win_vga;
for (i = 0; i < ARRAY_SIZE(ov772x_win_sizes); ++i) {
u32 diff = abs(width - ov772x_win_sizes[i].width)
+ abs(height - ov772x_win_sizes[i].height);
if (diff < best_diff) {
best_diff = diff;
win = &ov772x_win_sizes[i];
}
}
return win;
}
@ -890,11 +890,6 @@ static int ov772x_g_fmt(struct v4l2_subdev *sd,
{
struct ov772x_priv *priv = container_of(sd, struct ov772x_priv, subdev);
if (!priv->win || !priv->cfmt) {
priv->cfmt = &ov772x_cfmts[0];
priv->win = ov772x_select_win(VGA_WIDTH, VGA_HEIGHT);
}
mf->width = priv->win->width;
mf->height = priv->win->height;
mf->code = priv->cfmt->code;
@ -1103,6 +1098,11 @@ static int ov772x_probe(struct i2c_client *client,
}
ret = ov772x_video_probe(client);
if (ret < 0)
goto done;
priv->cfmt = &ov772x_cfmts[0];
priv->win = &ov772x_win_sizes[0];
done:
if (ret) {