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authorMuralidharan Karicheri <m-karicheri2@ti.com>2009-11-19 12:00:31 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-16 00:18:03 -0200
commitb6456c0cfe9d94e6d2bf684e6e6c031fc0b10031 (patch)
treee5742dc96ec8b2a74708787e6cb4ceefcc3e2bac /drivers/media
parent20d15a200d34cfb7141fb4558895d7d5233db84b (diff)
V4L/DVB (13571): v4l: Adding Digital Video Timings APIs
This adds the above APIs to the v4l2 core. This is based on version v1.2 of the RFC titled "V4L - Support for video timings at the input/output interface" Following new ioctls are added:- - VIDIOC_ENUM_DV_PRESETS - VIDIOC_S_DV_PRESET - VIDIOC_G_DV_PRESET - VIDIOC_QUERY_DV_PRESET - VIDIOC_S_DV_TIMINGS - VIDIOC_G_DV_TIMINGS Please refer to the RFC for the details. This code was tested using vpfe capture driver on TI's DM365. Following is the test configuration used :- Blu-Ray HD DVD source -> TVP7002 -> DM365 (VPFE) ->DDR A draft version of the TVP7002 driver (currently being reviewed in the mailing list) was used that supports V4L2_DV_1080I60 & V4L2_DV_720P60 presets. A loopback video capture application was used for testing these APIs. This calls following IOCTLS :- - verify the new v4l2_input capabilities flag added - Enumerate available presets using VIDIOC_ENUM_DV_PRESETS - Set one of the supported preset using VIDIOC_S_DV_PRESET - Get current preset using VIDIOC_G_DV_PRESET - Detect current preset using VIDIOC_QUERY_DV_PRESET - Using stub functions in tvp7002, verify VIDIOC_S_DV_TIMINGS and VIDIOC_G_DV_TIMINGS ioctls are received at the sub device. - Tested on 64bit platform by Hans Verkuil Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/video/v4l2-compat-ioctl32.c6
-rw-r--r--drivers/media/video/v4l2-ioctl.c147
2 files changed, 153 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
index 997975d5e024..c4150bd26337 100644
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ b/drivers/media/video/v4l2-compat-ioctl32.c
@@ -1077,6 +1077,12 @@ long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
case VIDIOC_DBG_G_REGISTER:
case VIDIOC_DBG_G_CHIP_IDENT:
case VIDIOC_S_HW_FREQ_SEEK:
+ case VIDIOC_ENUM_DV_PRESETS:
+ case VIDIOC_S_DV_PRESET:
+ case VIDIOC_G_DV_PRESET:
+ case VIDIOC_QUERY_DV_PRESET:
+ case VIDIOC_S_DV_TIMINGS:
+ case VIDIOC_G_DV_TIMINGS:
ret = do_video_ioctl(file, cmd, arg);
break;
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
index 30cc3347ae52..4b11257c3184 100644
--- a/drivers/media/video/v4l2-ioctl.c
+++ b/drivers/media/video/v4l2-ioctl.c
@@ -284,6 +284,12 @@ static const char *v4l2_ioctls[] = {
[_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT",
[_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK",
#endif
+ [_IOC_NR(VIDIOC_ENUM_DV_PRESETS)] = "VIDIOC_ENUM_DV_PRESETS",
+ [_IOC_NR(VIDIOC_S_DV_PRESET)] = "VIDIOC_S_DV_PRESET",
+ [_IOC_NR(VIDIOC_G_DV_PRESET)] = "VIDIOC_G_DV_PRESET",
+ [_IOC_NR(VIDIOC_QUERY_DV_PRESET)] = "VIDIOC_QUERY_DV_PRESET",
+ [_IOC_NR(VIDIOC_S_DV_TIMINGS)] = "VIDIOC_S_DV_TIMINGS",
+ [_IOC_NR(VIDIOC_G_DV_TIMINGS)] = "VIDIOC_G_DV_TIMINGS",
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
@@ -1135,6 +1141,19 @@ static long __video_do_ioctl(struct file *file,
{
struct v4l2_input *p = arg;
+ /*
+ * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
+ * CAP_STD here based on ioctl handler provided by the
+ * driver. If the driver doesn't support these
+ * for a specific input, it must override these flags.
+ */
+ if (ops->vidioc_s_std)
+ p->capabilities |= V4L2_IN_CAP_STD;
+ if (ops->vidioc_s_dv_preset)
+ p->capabilities |= V4L2_IN_CAP_PRESETS;
+ if (ops->vidioc_s_dv_timings)
+ p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS;
+
if (!ops->vidioc_enum_input)
break;
@@ -1179,6 +1198,19 @@ static long __video_do_ioctl(struct file *file,
if (!ops->vidioc_enum_output)
break;
+ /*
+ * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
+ * CAP_STD here based on ioctl handler provided by the
+ * driver. If the driver doesn't support these
+ * for a specific output, it must override these flags.
+ */
+ if (ops->vidioc_s_std)
+ p->capabilities |= V4L2_OUT_CAP_STD;
+ if (ops->vidioc_s_dv_preset)
+ p->capabilities |= V4L2_OUT_CAP_PRESETS;
+ if (ops->vidioc_s_dv_timings)
+ p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS;
+
ret = ops->vidioc_enum_output(file, fh, p);
if (!ret)
dbgarg(cmd, "index=%d, name=%s, type=%d, "
@@ -1794,6 +1826,121 @@ static long __video_do_ioctl(struct file *file,
}
break;
}
+ case VIDIOC_ENUM_DV_PRESETS:
+ {
+ struct v4l2_dv_enum_preset *p = arg;
+
+ if (!ops->vidioc_enum_dv_presets)
+ break;
+
+ ret = ops->vidioc_enum_dv_presets(file, fh, p);
+ if (!ret)
+ dbgarg(cmd,
+ "index=%d, preset=%d, name=%s, width=%d,"
+ " height=%d ",
+ p->index, p->preset, p->name, p->width,
+ p->height);
+ break;
+ }
+ case VIDIOC_S_DV_PRESET:
+ {
+ struct v4l2_dv_preset *p = arg;
+
+ if (!ops->vidioc_s_dv_preset)
+ break;
+
+ dbgarg(cmd, "preset=%d\n", p->preset);
+ ret = ops->vidioc_s_dv_preset(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_DV_PRESET:
+ {
+ struct v4l2_dv_preset *p = arg;
+
+ if (!ops->vidioc_g_dv_preset)
+ break;
+
+ ret = ops->vidioc_g_dv_preset(file, fh, p);
+ if (!ret)
+ dbgarg(cmd, "preset=%d\n", p->preset);
+ break;
+ }
+ case VIDIOC_QUERY_DV_PRESET:
+ {
+ struct v4l2_dv_preset *p = arg;
+
+ if (!ops->vidioc_query_dv_preset)
+ break;
+
+ ret = ops->vidioc_query_dv_preset(file, fh, p);
+ if (!ret)
+ dbgarg(cmd, "preset=%d\n", p->preset);
+ break;
+ }
+ case VIDIOC_S_DV_TIMINGS:
+ {
+ struct v4l2_dv_timings *p = arg;
+
+ if (!ops->vidioc_s_dv_timings)
+ break;
+
+ switch (p->type) {
+ case V4L2_DV_BT_656_1120:
+ dbgarg2("bt-656/1120:interlaced=%d, pixelclock=%lld,"
+ " width=%d, height=%d, polarities=%x,"
+ " hfrontporch=%d, hsync=%d, hbackporch=%d,"
+ " vfrontporch=%d, vsync=%d, vbackporch=%d,"
+ " il_vfrontporch=%d, il_vsync=%d,"
+ " il_vbackporch=%d\n",
+ p->bt.interlaced, p->bt.pixelclock,
+ p->bt.width, p->bt.height, p->bt.polarities,
+ p->bt.hfrontporch, p->bt.hsync,
+ p->bt.hbackporch, p->bt.vfrontporch,
+ p->bt.vsync, p->bt.vbackporch,
+ p->bt.il_vfrontporch, p->bt.il_vsync,
+ p->bt.il_vbackporch);
+ ret = ops->vidioc_s_dv_timings(file, fh, p);
+ break;
+ default:
+ dbgarg2("Unknown type %d!\n", p->type);
+ break;
+ }
+ break;
+ }
+ case VIDIOC_G_DV_TIMINGS:
+ {
+ struct v4l2_dv_timings *p = arg;
+
+ if (!ops->vidioc_g_dv_timings)
+ break;
+
+ ret = ops->vidioc_g_dv_timings(file, fh, p);
+ if (!ret) {
+ switch (p->type) {
+ case V4L2_DV_BT_656_1120:
+ dbgarg2("bt-656/1120:interlaced=%d,"
+ " pixelclock=%lld,"
+ " width=%d, height=%d, polarities=%x,"
+ " hfrontporch=%d, hsync=%d,"
+ " hbackporch=%d, vfrontporch=%d,"
+ " vsync=%d, vbackporch=%d,"
+ " il_vfrontporch=%d, il_vsync=%d,"
+ " il_vbackporch=%d\n",
+ p->bt.interlaced, p->bt.pixelclock,
+ p->bt.width, p->bt.height,
+ p->bt.polarities, p->bt.hfrontporch,
+ p->bt.hsync, p->bt.hbackporch,
+ p->bt.vfrontporch, p->bt.vsync,
+ p->bt.vbackporch, p->bt.il_vfrontporch,
+ p->bt.il_vsync, p->bt.il_vbackporch);
+ break;
+ default:
+ dbgarg2("Unknown type %d!\n", p->type);
+ break;
+ }
+ }
+ break;
+ }
default:
{

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