I will be sending the patch for documentation today.
FYI.
Murali Karicheri
Software Design Engineer
Texas Instruments Inc.
Germantown, MD 20874
email: m-kariche...@ti.com
>-----Original Message-----
>From: Karicheri, Muralidharan
>Sent: Wednesday, November 18, 2009 12:04 PM
>To: linux-me...@vger.kernel.org; hverk...@xs4all.nl
>Cc: davinci-linux-open-source@linux.davincidsp.com; Karicheri, Muralidharan
>Subject: [PATCH v2] V4L - Adding Digital Video Timings APIs
>
>From: Muralidharan Karicheri <m-kariche...@ti.com>
>
>This is the second version of the digital video timings APIs implementation.
>This adds comment from previous version. I would like to have this
>merged to 2.6.33
>
>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 :-
>
>Blue 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.
>
>TODOs :
>
> - Test it on a 64bit platform - I need help here since I don't have the
>platform.
> - Add documentation (I will send another patch for this today).
> - Update v4l2-apps for the new ioctl (will send another patch after
> compilation issue is resolved)
>
>Please review this and let me know your comments.
>
>Signed-off-by: Muralidharan Karicheri <m-kariche...@ti.com>
>Reviewed-by: Hans Verkuil <hverk...@xs4all.nl>
>---
>Applies to V4L-DVB linux-next branch
>
> drivers/media/video/v4l2-compat-ioctl32.c | 7 ++
> drivers/media/video/v4l2-ioctl.c | 148
>+++++++++++++++++++++++++++++
> include/linux/videodev2.h | 136
>++++++++++++++++++++++++++-
> include/media/v4l2-ioctl.h | 15 +++
> include/media/v4l2-subdev.h | 21 ++++
> 5 files changed, 325 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/media/video/v4l2-compat-ioctl32.c
>b/drivers/media/video/v4l2-compat-ioctl32.c
>index 997975d..9277448 100644
>--- a/drivers/media/video/v4l2-compat-ioctl32.c
>+++ b/drivers/media/video/v4l2-compat-ioctl32.c
>@@ -1077,6 +1077,13 @@ 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 30cc334..9593720 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 +1826,122 @@ 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;
>+
>+ dbgarg(cmd, "type=%d", p->type);
>+ switch (p->type) {
>+ case V4L2_DV_BT_656_1120:
>+ dbgarg2("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!\n");
>+ break;
>+ }
>+ break;
>+ }
>+ case VIDIOC_G_DV_TIMINGS:
>+ {
>+ struct v4l2_dv_timings *p = arg;
>+
>+ if (!ops->vidioc_g_dv_timings)
>+ break;
>+
>+ dbgarg(cmd, "type=%d", p->type);
>+ ret = ops->vidioc_g_dv_timings(file, fh, p);
>+ if (!ret) {
>+ switch (p->type) {
>+ case V4L2_DV_BT_656_1120:
>+ dbgarg2("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!\n");
>+ break;
>+ }
>+ }
>+ break;
>+ }
>
> default:
> {
>diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
>index cfde111..5bcc4ab 100644
>--- a/include/linux/videodev2.h
>+++ b/include/linux/videodev2.h
>@@ -731,6 +731,119 @@ 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_PRESET_BASE 0x00000000
>+#define V4L2_DV_INVALID (V4L2_DV_PRESET_BASE + 0)
>+/* BT.1362 */
>+#define V4L2_DV_480P59_94 (V4L2_DV_PRESET_BASE + 1)
>+/* BT.1362 */
>+#define V4L2_DV_576P50 (V4L2_DV_PRESET_BASE + 2)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P24 (V4L2_DV_PRESET_BASE + 3)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P25 (V4L2_DV_PRESET_BASE + 4)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P30 (V4L2_DV_PRESET_BASE + 5)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P50 (V4L2_DV_PRESET_BASE + 6)
>+/* SMPTE 274M */
>+#define V4L2_DV_720P59_94 (V4L2_DV_PRESET_BASE + 7)
>+/* SMPTE 274M/296M */
>+#define V4L2_DV_720P60 (V4L2_DV_PRESET_BASE + 8)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I29_97 (V4L2_DV_PRESET_BASE + 9)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I30 (V4L2_DV_PRESET_BASE + 10)
>+/* BT.1120 */
>+#define V4L2_DV_1080I25 (V4L2_DV_PRESET_BASE + 11)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I50 (V4L2_DV_PRESET_BASE + 12)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I60 (V4L2_DV_PRESET_BASE + 13)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P24 (V4L2_DV_PRESET_BASE + 14)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P25 (V4L2_DV_PRESET_BASE + 15)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P30 (V4L2_DV_PRESET_BASE + 16)
>+/* BT.1120 */
>+#define V4L2_DV_1080P50 (V4L2_DV_PRESET_BASE + 17)
>+/* BT.1120 */
>+#define V4L2_DV_1080P60 (V4L2_DV_PRESET_BASE + 18)
>+
>+/*
>+ * 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];
>+};
>+
>+/* 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
>+
>+/* BT.656/1120 timing type */
>+enum v4l2_dv_timings_type {
>+ V4L2_DV_BT_656_1120,
>+};
>+
>+/* DV timings */
>+struct v4l2_dv_timings {
>+ enum v4l2_dv_timings_type type;
>+ union {
>+ struct v4l2_bt_timings bt;
>+ __u32 reserved[32];
>+ };
>+};
>+
>+/*
> * V I D E O I N P U T S
> */
> struct v4l2_input {
>@@ -741,7 +854,8 @@ 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 */
>@@ -772,6 +886,11 @@ 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 DV_PRESETS */
>+#define V4L2_IN_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports Custom timings
>*/
>+#define V4L2_IN_CAP_STD 0x00000004 /* Supports STD */
>+
> /*
> * V I D E O O U T P U T S
> */
>@@ -782,13 +901,19 @@ 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 DV_PRESETS */
>+#define V4L2_OUT_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports Custom
>timings */
>+#define V4L2_OUT_CAP_STD 0x00000004 /* Supports STD */
>+
> /*
> * C O N T R O L S
> */
>@@ -1621,6 +1746,13 @@ 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 7a4529d..e8ba0f2 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 88c13d6..92634da 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);
> };
>
> /*
>--
>1.6.0.4
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