[PATCH v4 47/49] adv7604: Add endpoint properties to DT bindings

Laurent Pinchart
2014-04-17T14:13:18Z

Add support for the hsync-active, vsync-active and pclk-sample
properties to the DT bindings and control BT.656 mode implicitly.

Cc: devicetree@vger.kernel.org
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
---
.../devicetree/bindings/media/i2c/adv7604.txt | 13 +++++++++
drivers/media/i2c/adv7604.c | 34 ++++++++++++++++++++--
2 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/adv7604.txt b/Documentation/devicetree/bindings/media/i2c/adv7604.txt
index 2efb48f..c27cede 100644
--- a/Documentation/devicetree/bindings/media/i2c/adv7604.txt
+++ b/Documentation/devicetree/bindings/media/i2c/adv7604.txt
@@ -33,6 +33,19 @@ Optional Properties:

- reset-gpios: Reference to the GPIO connected to the device's reset pin.

+Optional Endpoint Properties:
+
+ The following three properties are defined in video-interfaces.txt and are
+ valid for source endpoints only.
+
+ - hsync-active: Horizontal synchronization polarity. Defaults to active low.
+ - vsync-active: Vertical synchronization polarity. Defaults to active low.
+ - pclk-sample: Pixel clock polarity. Defaults to output on the falling edge.
+
+ If none of hsync-active, vsync-active and pclk-sample is specified the
+ endpoint will use embedded BT.656 synchronization.
+
+
Example:

hdmi_receiver@4c {
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index fd0c646..63f036f 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -41,6 +41,7 @@
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-dv-timings.h>
+#include <media/v4l2-of.h>

static int debug;
module_param(debug, int, 0644);
@@ -2679,6 +2680,37 @@ MODULE_DEVICE_TABLE(of, adv7604_of_id);

static int adv7604_parse_dt(struct adv7604_state *state)
{
+ struct v4l2_of_endpoint bus_cfg;
+ struct device_node *endpoint;
+ struct device_node *np;
+ unsigned int flags;
+
+ np = state->i2c_clients[ADV7604_PAGE_IO]->dev.of_node;
+
+ /* Parse the endpoint. */
+ endpoint = of_graph_get_next_endpoint(np, NULL);
+ if (!endpoint)
+ return -EINVAL;
+
+ v4l2_of_parse_endpoint(endpoint, &bus_cfg);
+ of_node_put(endpoint);
+
+ flags = bus_cfg.bus.parallel.flags;
+
+ if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+ state->pdata.inv_hs_pol = 1;
+
+ if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
+ state->pdata.inv_vs_pol = 1;
+
+ if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
+ state->pdata.inv_llc_pol = 1;
+
+ if (bus_cfg.bus_type == V4L2_MBUS_BT656) {
+ state->pdata.insert_av_codes = 1;
+ state->pdata.op_656_range = 1;
+ }
+
/* Disable the interrupt for now as no DT-based board uses it. */
state->pdata.int1_config = ADV7604_INT1_CONFIG_DISABLED;

@@ -2701,9 +2733,7 @@ static int adv7604_parse_dt(struct adv7604_state *state)
state->pdata.disable_cable_det_rst = 0;
state->pdata.default_input = -1;
state->pdata.blank_data = 1;
- state->pdata.op_656_range = 1;
state->pdata.alt_data_sat = 1;
- state->pdata.insert_av_codes = 1;
state->pdata.op_format_mode_sel = ADV7604_OP_FORMAT_MODE0;
state->pdata.bus_order = ADV7604_BUS_ORDER_RGB;

--
1.8.3.2