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Date: Fri, 3 May 2013 13:47:19 +0530
From: Prabhakar Lad <prabhakar.csengg@...il.com>
To: LMML <linux-media@...r.kernel.org>,
Mauro Carvalho Chehab <mchehab@...hat.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
Hans Verkuil <hans.verkuil@...co.com>,
Guennadi Liakhovetski <g.liakhovetski@....de>,
LKML <linux-kernel@...r.kernel.org>,
Sakari Ailus <sakari.ailus@....fi>,
"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH v3] media: i2c: tvp7002: enable TVP7002 decoder for media controller based usage
From: Lad, Prabhakar <prabhakar.csengg@...il.com>
This patch enables tvp7002 decoder driver for media controller
based usage by adding v4l2_subdev_pad_ops operations support
for enum_mbus_code, set_pad_format, get_pad_format and media_entity_init()
on probe and media_entity_cleanup() on remove.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
---
Changes for v2:
1: Fixed review comment pointed by Laurent, Don’t return error for set_fmt
but fix the input parameters according to current timings.
Changes for v3:
1: Fixed review comments pointed by Laurent.
drivers/media/i2c/tvp7002.c | 96 ++++++++++++++++++++++++++++++++++++++++--
include/media/tvp7002.h | 2 +
2 files changed, 93 insertions(+), 5 deletions(-)
diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c
index 027809c..270e699 100644
--- a/drivers/media/i2c/tvp7002.c
+++ b/drivers/media/i2c/tvp7002.c
@@ -424,6 +424,7 @@ struct tvp7002 {
int streaming;
const struct tvp7002_timings_definition *current_timings;
+ struct media_pad pad;
};
/*
@@ -880,6 +881,65 @@ static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
.s_ctrl = tvp7002_s_ctrl,
};
+/*
+ * tvp7002_enum_mbus_code() - Enum supported digital video format on pad
+ * @sd: pointer to standard V4L2 sub-device structure
+ * @fh: file handle for the subdev
+ * @code: pointer to subdev enum mbus code struct
+ *
+ * Enumerate supported digital video formats for pad.
+ */
+static int
+tvp7002_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ /* Check requested format index is within range */
+ if (code->index != 0)
+ return -EINVAL;
+
+ code->code = V4L2_MBUS_FMT_YUYV10_1X20;
+
+ return 0;
+}
+
+/*
+ * tvp7002_get_pad_format() - get video format on pad
+ * @sd: pointer to standard V4L2 sub-device structure
+ * @fh: file handle for the subdev
+ * @fmt: pointer to subdev format struct
+ *
+ * get video format for pad.
+ */
+static int
+tvp7002_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct tvp7002 *tvp7002 = to_tvp7002(sd);
+
+ fmt->format.code = V4L2_MBUS_FMT_YUYV10_1X20;
+ fmt->format.width = tvp7002->current_timings->timings.bt.width;
+ fmt->format.height = tvp7002->current_timings->timings.bt.height;
+ fmt->format.field = tvp7002->current_timings->scanmode;
+ fmt->format.colorspace = tvp7002->current_timings->color_space;
+
+ return 0;
+}
+
+/*
+ * tvp7002_set_pad_format() - set video format on pad
+ * @sd: pointer to standard V4L2 sub-device structure
+ * @fh: file handle for the subdev
+ * @fmt: pointer to subdev format struct
+ *
+ * set video format for pad.
+ */
+static int
+tvp7002_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ return tvp7002_get_pad_format(sd, fh, fmt);
+}
+
/* V4L2 core operation handlers */
static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
.g_chip_ident = tvp7002_g_chip_ident,
@@ -910,10 +970,18 @@ static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
.enum_mbus_fmt = tvp7002_enum_mbus_fmt,
};
+/* media pad related operation handlers */
+static const struct v4l2_subdev_pad_ops tvp7002_pad_ops = {
+ .enum_mbus_code = tvp7002_enum_mbus_code,
+ .get_fmt = tvp7002_get_pad_format,
+ .set_fmt = tvp7002_set_pad_format,
+};
+
/* V4L2 top level operation handlers */
static const struct v4l2_subdev_ops tvp7002_ops = {
.core = &tvp7002_core_ops,
.video = &tvp7002_video_ops,
+ .pad = &tvp7002_pad_ops,
};
/*
@@ -993,19 +1061,35 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
timings = device->current_timings->timings;
error = tvp7002_s_dv_timings(sd, &timings);
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ strlcpy(sd->name, TVP7002_MODULE_NAME, sizeof(sd->name));
+ device->pad.flags = MEDIA_PAD_FL_SOURCE;
+ device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+
+ error = media_entity_init(&device->sd.entity, 1, &device->pad, 0);
+ if (error < 0)
+ return error;
+#endif
+
v4l2_ctrl_handler_init(&device->hdl, 1);
v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
V4L2_CID_GAIN, 0, 255, 1, 0);
sd->ctrl_handler = &device->hdl;
if (device->hdl.error) {
- int err = device->hdl.error;
-
- v4l2_ctrl_handler_free(&device->hdl);
- return err;
+ error = device->hdl.error;
+ goto error;
}
v4l2_ctrl_handler_setup(&device->hdl);
return 0;
+
+error:
+ v4l2_ctrl_handler_free(&device->hdl);
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ media_entity_cleanup(&device->sd.entity);
+#endif
+ return error;
}
/*
@@ -1022,7 +1106,9 @@ static int tvp7002_remove(struct i2c_client *c)
v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
"on address 0x%x\n", c->addr);
-
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ media_entity_cleanup(&device->sd.entity);
+#endif
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&device->hdl);
return 0;
diff --git a/include/media/tvp7002.h b/include/media/tvp7002.h
index ee43534..7123048 100644
--- a/include/media/tvp7002.h
+++ b/include/media/tvp7002.h
@@ -26,6 +26,8 @@
#ifndef _TVP7002_H_
#define _TVP7002_H_
+#define TVP7002_MODULE_NAME "tvp7002"
+
/* Platform-dependent data
*
* clk_polarity:
--
1.7.4.1
--
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