The TFP410 supports 24 bit, single-edge and 12 bit, dual-edge modes.
Depending on how many wires are used (24/12) the driver can set the correct
bus_format.
If the information is not available in DT then assume 24 bit, single-edge
setup.
Signed-off-by: Peter Ujfalusi <peter.ujfal...@ti.com>
---
drivers/gpu/drm/bridge/ti-tfp410.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c
b/drivers/gpu/drm/bridge/ti-tfp410.c
index 6fc831eb3804..8b0e71bd3ca7 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -29,6 +29,7 @@ struct tfp410 {
struct drm_connector connector;
unsigned int connector_type;
+ u32 bus_format;
struct i2c_adapter *ddc;
struct gpio_desc *hpd;
int hpd_irq;
@@ -139,6 +140,9 @@ static int tfp410_attach(struct drm_bridge *bridge)
return ret;
}
+ drm_display_info_set_bus_formats(&dvi->connector.display_info,
+ &dvi->bus_format, 1);
+
drm_connector_attach_encoder(&dvi->connector,
bridge->encoder);
@@ -197,6 +201,7 @@ static int tfp410_parse_timings(struct tfp410 *dvi, bool
i2c)
struct drm_bridge_timings *timings = &dvi->timings;
struct device_node *ep;
u32 pclk_sample = 0;
+ u32 bus_width = 24;
s32 deskew = 0;
/* Start with defaults. */
@@ -221,6 +226,7 @@ static int tfp410_parse_timings(struct tfp410 *dvi, bool
i2c)
/* Get the sampling edge from the endpoint. */
of_property_read_u32(ep, "pclk-sample", &pclk_sample);
+ of_property_read_u32(ep, "bus-width", &bus_width);
of_node_put(ep);
timings->input_bus_flags = DRM_BUS_FLAG_DE_HIGH;
@@ -238,6 +244,17 @@ static int tfp410_parse_timings(struct tfp410 *dvi, bool
i2c)
return -EINVAL;
}
+ switch (bus_width) {
+ case 12:
+ dvi->bus_format = MEDIA_BUS_FMT_RGB888_2X12_LE;
+ break;
+ case 24:
+ dvi->bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+ break;
+ default:
+ return -EINVAL;
+ }
+
/* Get the setup and hold time from vendor-specific properties. */
of_property_read_u32(dvi->dev->of_node, "ti,deskew", (u32 *)&deskew);
if (deskew < -4 || deskew > 3)
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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