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[media] v4l2-subdev: add support for the new edid ioctls 

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-08-10 06:07:12 -03:00 committed by Mauro Carvalho Chehab
parent 1248c7cb66
commit ed45ce2cc0
4 changed files with 78 additions and 0 deletions
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57
drivers/media/v4l2-core/v4l2-compat-ioctl32.c
View File

@ -16,6 +16,7 @@
#include <linux/compat.h>
#include <linux/module.h>
#include <linux/videodev2.h>
#include <linux/v4l2-subdev.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-ioctl.h>
@ -729,6 +730,44 @@ static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *u
return 0;
}
struct v4l2_subdev_edid32 {
__u32 pad;
__u32 start_block;
__u32 blocks;
__u32 reserved[5];
compat_caddr_t edid;
};
static int get_v4l2_subdev_edid32(struct v4l2_subdev_edid *kp, struct v4l2_subdev_edid32 __user *up)
{
u32 tmp;
if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_subdev_edid32)) ||
get_user(kp->pad, &up->pad) ||
get_user(kp->start_block, &up->start_block) ||
get_user(kp->blocks, &up->blocks) ||
get_user(tmp, &up->edid) ||
copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
return -EFAULT;
kp->edid = compat_ptr(tmp);
return 0;
}
static int put_v4l2_subdev_edid32(struct v4l2_subdev_edid *kp, struct v4l2_subdev_edid32 __user *up)
{
u32 tmp = (u32)((unsigned long)kp->edid);
if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_subdev_edid32)) ||
put_user(kp->pad, &up->pad) ||
put_user(kp->start_block, &up->start_block) ||
put_user(kp->blocks, &up->blocks) ||
put_user(tmp, &up->edid) ||
copy_to_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
return -EFAULT;
return 0;
}
#define VIDIOC_G_FMT32 _IOWR('V', 4, struct v4l2_format32)
#define VIDIOC_S_FMT32 _IOWR('V', 5, struct v4l2_format32)
#define VIDIOC_QUERYBUF32 _IOWR('V', 9, struct v4l2_buffer32)
@ -738,6 +777,8 @@ static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *u
#define VIDIOC_DQBUF32 _IOWR('V', 17, struct v4l2_buffer32)
#define VIDIOC_ENUMSTD32 _IOWR('V', 25, struct v4l2_standard32)
#define VIDIOC_ENUMINPUT32 _IOWR('V', 26, struct v4l2_input32)
#define VIDIOC_SUBDEV_G_EDID32 _IOWR('V', 63, struct v4l2_subdev_edid32)
#define VIDIOC_SUBDEV_S_EDID32 _IOWR('V', 64, struct v4l2_subdev_edid32)
#define VIDIOC_TRY_FMT32 _IOWR('V', 64, struct v4l2_format32)
#define VIDIOC_G_EXT_CTRLS32 _IOWR('V', 71, struct v4l2_ext_controls32)
#define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
@ -765,6 +806,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
struct v4l2_ext_controls v2ecs;
struct v4l2_event v2ev;
struct v4l2_create_buffers v2crt;
struct v4l2_subdev_edid v2edid;
unsigned long vx;
int vi;
} karg;
@ -797,6 +839,8 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
case VIDIOC_CREATE_BUFS32: cmd = VIDIOC_CREATE_BUFS; break;
case VIDIOC_PREPARE_BUF32: cmd = VIDIOC_PREPARE_BUF; break;
case VIDIOC_SUBDEV_G_EDID32: cmd = VIDIOC_SUBDEV_G_EDID; break;
case VIDIOC_SUBDEV_S_EDID32: cmd = VIDIOC_SUBDEV_S_EDID; break;
}
switch (cmd) {
@ -814,6 +858,12 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
compatible_arg = 0;
break;
case VIDIOC_SUBDEV_G_EDID:
case VIDIOC_SUBDEV_S_EDID:
err = get_v4l2_subdev_edid32(&karg.v2edid, up);
compatible_arg = 0;
break;
case VIDIOC_G_FMT:
case VIDIOC_S_FMT:
case VIDIOC_TRY_FMT:
@ -906,6 +956,11 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
err = put_v4l2_event32(&karg.v2ev, up);
break;
case VIDIOC_SUBDEV_G_EDID:
case VIDIOC_SUBDEV_S_EDID:
err = put_v4l2_subdev_edid32(&karg.v2edid, up);
break;
case VIDIOC_G_FMT:
case VIDIOC_S_FMT:
case VIDIOC_TRY_FMT:
@ -1026,6 +1081,8 @@ long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
case VIDIOC_QUERY_DV_TIMINGS:
case VIDIOC_DV_TIMINGS_CAP:
case VIDIOC_ENUM_FREQ_BANDS:
case VIDIOC_SUBDEV_G_EDID32:
case VIDIOC_SUBDEV_S_EDID32:
ret = do_video_ioctl(file, cmd, arg);
break;

13
drivers/media/v4l2-core/v4l2-ioctl.c
View File

@ -2191,6 +2191,19 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
break;
}
case VIDIOC_SUBDEV_G_EDID:
case VIDIOC_SUBDEV_S_EDID: {
struct v4l2_subdev_edid *edid = parg;
if (edid->blocks) {
*user_ptr = (void __user *)edid->edid;
*kernel_ptr = (void *)&edid->edid;
*array_size = edid->blocks * 128;
ret = 1;
}
break;
}
case VIDIOC_S_EXT_CTRLS:
case VIDIOC_G_EXT_CTRLS:
case VIDIOC_TRY_EXT_CTRLS: {

6
drivers/media/v4l2-core/v4l2-subdev.c
View File

@ -348,6 +348,12 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
return v4l2_subdev_call(
sd, pad, set_selection, subdev_fh, sel);
}
case VIDIOC_SUBDEV_G_EDID:
return v4l2_subdev_call(sd, pad, get_edid, arg);
case VIDIOC_SUBDEV_S_EDID:
return v4l2_subdev_call(sd, pad, set_edid, arg);
#endif
default:
return v4l2_subdev_call(sd, core, ioctl, cmd, arg);

2
include/media/v4l2-subdev.h
View File

@ -476,6 +476,8 @@ struct v4l2_subdev_pad_ops {
struct v4l2_subdev_selection *sel);
int (*set_selection)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_selection *sel);
int (*get_edid)(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid);
int (*set_edid)(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid);
#ifdef CONFIG_MEDIA_CONTROLLER
int (*link_validate)(struct v4l2_subdev *sd, struct media_link *link,
struct v4l2_subdev_format *source_fmt,