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MLK-17275-7: drm/bridge: adv7511: Add dsi-channel property 

Add a new property "adi,dsi-channel" to allow the user specify the DSI
channel to be used when communicating with DSI peripheral.

Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
pull/10/head
Robert Chiras 2017-12-21 14:10:42 +02:00 committed by Jason Liu
parent ea4e7be462
commit cf22e63be2
3 changed files with 16 additions and 3 deletions
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2
Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt
View File

@ -69,6 +69,8 @@ Optional properties:
- adi,disable-timing-generator: Only for ADV7533 and ADV7535. Disables the
internal timing generator. The chip will rely on the sync signals in the DSI
data lanes, rather than generate its own timings for HDMI output.
- adi,dsi-channel: Only for ADV7533 and ADV7535. DSI channel number to be used
when communicating with the DSI peripheral. It should be one of 0, 1, 2 or 3.
Required nodes:

1
drivers/gpu/drm/bridge/adv7511/adv7511.h
View File

@ -340,6 +340,7 @@ struct adv7511 {
struct device_node *host_node;
struct mipi_dsi_device *dsi;
u8 num_dsi_lanes;
u8 channel_id;
bool use_timing_gen;
enum adv7511_type type;

16
drivers/gpu/drm/bridge/adv7511/adv7533.c
View File

@ -185,7 +185,7 @@ int adv7533_attach_dsi(struct adv7511 *adv)
struct mipi_dsi_device *dsi;
int ret = 0;
const struct mipi_dsi_device_info info = { .type = "adv7533",
.channel = 0,
.channel = adv->channel_id,
.node = NULL,
};
@ -231,14 +231,24 @@ void adv7533_detach_dsi(struct adv7511 *adv)
int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv)
{
u32 num_lanes;
struct device *dev = &adv->i2c_main->dev;
u32 num_lanes = 0, channel_id = 0;
of_property_read_u32(np, "adi,dsi-channel", &channel_id);
of_property_read_u32(np, "adi,dsi-lanes", &num_lanes);
if (num_lanes < 1 || num_lanes > 4)
if (num_lanes < 1 || num_lanes > 4) {
dev_err(dev, "Invalid dsi-lanes: %d\n", num_lanes);
return -EINVAL;
}
if (channel_id > 3) {
dev_err(dev, "Invalid dsi-channel: %d\n", channel_id);
return -EINVAL;
}
adv->num_dsi_lanes = num_lanes;
adv->channel_id = channel_id;
adv->host_node = of_graph_get_remote_node(np, 0, 0);
if (!adv->host_node)