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[media] adv7604: Add endpoint properties to DT bindings 

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

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Laurent Pinchart 2014-02-04 20:23:16 -03:00 committed by Mauro Carvalho Chehab
parent f82f313e97
commit 6fa88045ef
2 changed files with 45 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
Documentation/devicetree/bindings/media/i2c/adv7604.txt
View File

@ -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 {

34
drivers/media/i2c/adv7604.c
View File

@ -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);
@ -2678,6 +2679,37 @@ 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;
@ -2700,9 +2732,7 @@ 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;