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Date: Mon, 4 Jan 2016 09:25:32 -0300
From: Javier Martinez Canillas <javier@....samsung.com>
To: linux-kernel@...r.kernel.org
Cc: devicetree@...r.kernel.org,
Mauro Carvalho Chehab <mchehab@....samsung.com>,
Enrico Butera <ebutera@...il.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Enric Balletbo i Serra <eballetbo@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Eduard Gavin <egavinc@...il.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Hans Verkuil <hans.verkuil@...co.com>,
linux-media@...r.kernel.org,
Javier Martinez Canillas <javier@....samsung.com>
Subject: [PATCH 10/10] [media] tvp5150: Configure data interface via pdata or DT
The video decoder supports either 8-bit 4:2:2 YUV with discrete syncs
or 8-bit ITU-R BT.656 with embedded syncs output format but currently
BT.656 it's always reported. Allow to configure the format to use via
either platform data or a device tree definition.
Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
---
drivers/media/i2c/tvp5150.c | 61 +++++++++++++++++++++++++++++++++++++++++++--
include/media/i2c/tvp5150.h | 5 ++++
2 files changed, 64 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index fed89a811ab7..8bce45a6e264 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -6,6 +6,7 @@
*/
#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
@@ -15,6 +16,7 @@
#include <media/v4l2-device.h>
#include <media/i2c/tvp5150.h>
#include <media/v4l2-ctrls.h>
+#include <media/v4l2-of.h>
#include "tvp5150_reg.h"
@@ -39,6 +41,7 @@ struct tvp5150 {
struct media_pad pad;
struct v4l2_ctrl_handler hdl;
struct v4l2_rect rect;
+ struct tvp5150_platform_data *pdata;
v4l2_std_id norm; /* Current set standard */
u32 input;
@@ -757,6 +760,7 @@ static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
static int tvp5150_reset(struct v4l2_subdev *sd, u32 val)
{
struct tvp5150 *decoder = to_tvp5150(sd);
+ struct tvp5150_platform_data *pdata = decoder->pdata;
/* Initializes TVP5150 to its default values */
tvp5150_write_inittab(sd, tvp5150_init_default);
@@ -774,6 +778,10 @@ static int tvp5150_reset(struct v4l2_subdev *sd, u32 val)
v4l2_ctrl_handler_setup(&decoder->hdl);
tvp5150_set_std(sd, decoder->norm);
+
+ if (pdata && pdata->bus_type == V4L2_MBUS_PARALLEL)
+ tvp5150_write(sd, TVP5150_DATA_RATE_SEL, 0x40);
+
return 0;
};
@@ -940,6 +948,16 @@ static int tvp5150_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
static int tvp5150_g_mbus_config(struct v4l2_subdev *sd,
struct v4l2_mbus_config *cfg)
{
+ struct tvp5150_platform_data *pdata = to_tvp5150(sd)->pdata;
+
+ if (pdata) {
+ cfg->type = pdata->bus_type;
+ cfg->flags = pdata->parallel_flags;
+
+ return 0;
+ }
+
+ /* Default values if no platform data was provided */
cfg->type = V4L2_MBUS_BT656;
cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING
| V4L2_MBUS_FIELD_EVEN_LOW | V4L2_MBUS_DATA_ACTIVE_HIGH;
@@ -986,13 +1004,20 @@ static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
static int tvp5150_s_stream(struct v4l2_subdev *sd, int enable)
{
+ struct tvp5150_platform_data *pdata = to_tvp5150(sd)->pdata;
+ /* Output format: 8-bit ITU-R BT.656 with embedded syncs */
+ int val = 0x09;
+
+ /* Output format: 8-bit 4:2:2 YUV with discrete sync */
+ if (pdata && pdata->bus_type == V4L2_MBUS_PARALLEL)
+ val = 0x0d;
+
/* Initializes TVP5150 to its default values */
/* # set PCLK (27MHz) */
tvp5150_write(sd, TVP5150_CONF_SHARED_PIN, 0x00);
- /* Output format: 8-bit ITU-R BT.656 with embedded syncs */
if (enable)
- tvp5150_write(sd, TVP5150_MISC_CTL, 0x09);
+ tvp5150_write(sd, TVP5150_MISC_CTL, val);
else
tvp5150_write(sd, TVP5150_MISC_CTL, 0x00);
@@ -1228,11 +1253,42 @@ static inline int tvp5150_init(struct i2c_client *c)
return 0;
}
+static struct tvp5150_platform_data *tvp5150_get_pdata(struct device *dev)
+{
+ struct tvp5150_platform_data *pdata = dev_get_platdata(dev);
+ struct v4l2_of_endpoint bus_cfg;
+ struct device_node *ep;
+
+ if (pdata)
+ return pdata;
+
+ if (IS_ENABLED(CONFIG_OF) && dev->of_node) {
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ ep = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (!ep)
+ return NULL;
+
+ v4l2_of_parse_endpoint(ep, &bus_cfg);
+
+ pdata->bus_type = bus_cfg.bus_type;
+ pdata->parallel_flags = bus_cfg.bus.parallel.flags;
+
+ of_node_put(ep);
+ return pdata;
+ }
+
+ return NULL;
+}
+
static int tvp5150_probe(struct i2c_client *c,
const struct i2c_device_id *id)
{
struct tvp5150 *core;
struct v4l2_subdev *sd;
+ struct tvp5150_platform_data *pdata = tvp5150_get_pdata(&c->dev);
int res;
/* Check if the adapter supports the needed features */
@@ -1262,6 +1318,7 @@ static int tvp5150_probe(struct i2c_client *c,
if (res < 0)
return res;
+ core->pdata = pdata;
core->norm = V4L2_STD_ALL; /* Default is autodetect */
core->input = TVP5150_COMPOSITE1;
core->enable = 1;
diff --git a/include/media/i2c/tvp5150.h b/include/media/i2c/tvp5150.h
index 649908a25605..e4cda0c843df 100644
--- a/include/media/i2c/tvp5150.h
+++ b/include/media/i2c/tvp5150.h
@@ -30,4 +30,9 @@
#define TVP5150_NORMAL 0
#define TVP5150_BLACK_SCREEN 1
+struct tvp5150_platform_data {
+ enum v4l2_mbus_type bus_type;
+ unsigned int parallel_flags;
+};
+
#endif
--
2.4.3
--
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