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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
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>
-rw-r--r--drivers/media/video/v4l2-compat-ioctl32.c6
-rw-r--r--drivers/media/video/v4l2-ioctl.c147
-rw-r--r--include/linux/videodev2.h116
-rw-r--r--include/media/v4l2-ioctl.h15
-rw-r--r--include/media/v4l2-subdev.h21
5 files changed, 303 insertions, 2 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:
{
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 32b92298fd79..59047ebf452e 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -732,6 +732,99 @@ struct v4l2_standard {
};
/*
+ * V I D E O T I M I N G S D V P R E S E T
+ */
+struct v4l2_dv_preset {
+ __u32 preset;
+ __u32 reserved[4];
+};
+
+/*
+ * D V P R E S E T S E N U M E R A T I O N
+ */
+struct v4l2_dv_enum_preset {
+ __u32 index;
+ __u32 preset;
+ __u8 name[32]; /* Name of the preset timing */
+ __u32 width;
+ __u32 height;
+ __u32 reserved[4];
+};
+
+/*
+ * D V P R E S E T V A L U E S
+ */
+#define V4L2_DV_INVALID 0
+#define V4L2_DV_480P59_94 1 /* BT.1362 */
+#define V4L2_DV_576P50 2 /* BT.1362 */
+#define V4L2_DV_720P24 3 /* SMPTE 296M */
+#define V4L2_DV_720P25 4 /* SMPTE 296M */
+#define V4L2_DV_720P30 5 /* SMPTE 296M */
+#define V4L2_DV_720P50 6 /* SMPTE 296M */
+#define V4L2_DV_720P59_94 7 /* SMPTE 274M */
+#define V4L2_DV_720P60 8 /* SMPTE 274M/296M */
+#define V4L2_DV_1080I29_97 9 /* BT.1120/ SMPTE 274M */
+#define V4L2_DV_1080I30 10 /* BT.1120/ SMPTE 274M */
+#define V4L2_DV_1080I25 11 /* BT.1120 */
+#define V4L2_DV_1080I50 12 /* SMPTE 296M */
+#define V4L2_DV_1080I60 13 /* SMPTE 296M */
+#define V4L2_DV_1080P24 14 /* SMPTE 296M */
+#define V4L2_DV_1080P25 15 /* SMPTE 296M */
+#define V4L2_DV_1080P30 16 /* SMPTE 296M */
+#define V4L2_DV_1080P50 17 /* BT.1120 */
+#define V4L2_DV_1080P60 18 /* BT.1120 */
+
+/*
+ * D V B T T I M I N G S
+ */
+
+/* BT.656/BT.1120 timing data */
+struct v4l2_bt_timings {
+ __u32 width; /* width in pixels */
+ __u32 height; /* height in lines */
+ __u32 interlaced; /* Interlaced or progressive */
+ __u32 polarities; /* Positive or negative polarity */
+ __u64 pixelclock; /* Pixel clock in HZ. Ex. 74.25MHz->74250000 */
+ __u32 hfrontporch; /* Horizpontal front porch in pixels */
+ __u32 hsync; /* Horizontal Sync length in pixels */
+ __u32 hbackporch; /* Horizontal back porch in pixels */
+ __u32 vfrontporch; /* Vertical front porch in pixels */
+ __u32 vsync; /* Vertical Sync length in lines */
+ __u32 vbackporch; /* Vertical back porch in lines */
+ __u32 il_vfrontporch; /* Vertical front porch for bottom field of
+ * interlaced field formats
+ */
+ __u32 il_vsync; /* Vertical sync length for bottom field of
+ * interlaced field formats
+ */
+ __u32 il_vbackporch; /* Vertical back porch for bottom field of
+ * interlaced field formats
+ */
+ __u32 reserved[16];
+} __attribute__ ((packed));
+
+/* Interlaced or progressive format */
+#define V4L2_DV_PROGRESSIVE 0
+#define V4L2_DV_INTERLACED 1
+
+/* Polarities. If bit is not set, it is assumed to be negative polarity */
+#define V4L2_DV_VSYNC_POS_POL 0x00000001
+#define V4L2_DV_HSYNC_POS_POL 0x00000002
+
+
+/* DV timings */
+struct v4l2_dv_timings {
+ __u32 type;
+ union {
+ struct v4l2_bt_timings bt;
+ __u32 reserved[32];
+ };
+} __attribute__ ((packed));
+
+/* Values for the type field */
+#define V4L2_DV_BT_656_1120 0 /* BT.656/1120 timing type */
+
+/*
* V I D E O I N P U T S
*/
struct v4l2_input {
@@ -742,7 +835,8 @@ struct v4l2_input {
__u32 tuner; /* Associated tuner */
v4l2_std_id std;
__u32 status;
- __u32 reserved[4];
+ __u32 capabilities;
+ __u32 reserved[3];
};
/* Values for the 'type' field */
@@ -773,6 +867,11 @@ struct v4l2_input {
#define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */
#define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */
+/* capabilities flags */
+#define V4L2_IN_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */
+#define V4L2_IN_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */
+#define V4L2_IN_CAP_STD 0x00000004 /* Supports S_STD */
+
/*
* V I D E O O U T P U T S
*/
@@ -783,13 +882,19 @@ struct v4l2_output {
__u32 audioset; /* Associated audios (bitfield) */
__u32 modulator; /* Associated modulator */
v4l2_std_id std;
- __u32 reserved[4];
+ __u32 capabilities;
+ __u32 reserved[3];
};
/* Values for the 'type' field */
#define V4L2_OUTPUT_TYPE_MODULATOR 1
#define V4L2_OUTPUT_TYPE_ANALOG 2
#define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3
+/* capabilities flags */
+#define V4L2_OUT_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */
+#define V4L2_OUT_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */
+#define V4L2_OUT_CAP_STD 0x00000004 /* Supports S_STD */
+
/*
* C O N T R O L S
*/
@@ -1624,6 +1729,13 @@ struct v4l2_dbg_chip_ident {
#endif
#define VIDIOC_S_HW_FREQ_SEEK _IOW('V', 82, struct v4l2_hw_freq_seek)
+#define VIDIOC_ENUM_DV_PRESETS _IOWR('V', 83, struct v4l2_dv_enum_preset)
+#define VIDIOC_S_DV_PRESET _IOWR('V', 84, struct v4l2_dv_preset)
+#define VIDIOC_G_DV_PRESET _IOWR('V', 85, struct v4l2_dv_preset)
+#define VIDIOC_QUERY_DV_PRESET _IOR('V', 86, struct v4l2_dv_preset)
+#define VIDIOC_S_DV_TIMINGS _IOWR('V', 87, struct v4l2_dv_timings)
+#define VIDIOC_G_DV_TIMINGS _IOWR('V', 88, struct v4l2_dv_timings)
+
/* Reminder: when adding new ioctls please add support for them to
drivers/media/video/v4l2-compat-ioctl32.c as well! */
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 7a4529defa88..e8ba0f2efbae 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -239,6 +239,21 @@ struct v4l2_ioctl_ops {
int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
struct v4l2_frmivalenum *fival);
+ /* DV Timings IOCTLs */
+ int (*vidioc_enum_dv_presets) (struct file *file, void *fh,
+ struct v4l2_dv_enum_preset *preset);
+
+ int (*vidioc_s_dv_preset) (struct file *file, void *fh,
+ struct v4l2_dv_preset *preset);
+ int (*vidioc_g_dv_preset) (struct file *file, void *fh,
+ struct v4l2_dv_preset *preset);
+ int (*vidioc_query_dv_preset) (struct file *file, void *fh,
+ struct v4l2_dv_preset *qpreset);
+ int (*vidioc_s_dv_timings) (struct file *file, void *fh,
+ struct v4l2_dv_timings *timings);
+ int (*vidioc_g_dv_timings) (struct file *file, void *fh,
+ struct v4l2_dv_timings *timings);
+
/* For other private ioctls */
long (*vidioc_default) (struct file *file, void *fh,
int cmd, void *arg);
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 00bf17608453..7a3408f9d0f2 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -217,6 +217,19 @@ struct v4l2_subdev_audio_ops {
s_routing: see s_routing in audio_ops, except this version is for video
devices.
+
+ s_dv_preset: set dv (Digital Video) preset in the sub device. Similar to
+ s_std()
+
+ query_dv_preset: query dv preset in the sub device. This is similar to
+ querystd()
+
+ s_dv_timings(): Set custom dv timings in the sub device. This is used
+ when sub device is capable of setting detailed timing information
+ in the hardware to generate/detect the video signal.
+
+ g_dv_timings(): Get custom dv timings in the sub device.
+
*/
struct v4l2_subdev_video_ops {
int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
@@ -240,6 +253,14 @@ struct v4l2_subdev_video_ops {
int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize);
int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival);
+ int (*s_dv_preset)(struct v4l2_subdev *sd,
+ struct v4l2_dv_preset *preset);
+ int (*query_dv_preset)(struct v4l2_subdev *sd,
+ struct v4l2_dv_preset *preset);
+ int (*s_dv_timings)(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings *timings);
+ int (*g_dv_timings)(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings *timings);
};
/*

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