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| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2019-04-01 15:41:43 +0300 |
|---|---|---|
| committer | Andrzej Hajda <a.hajda@samsung.com> | 2019-04-12 09:39:01 +0200 |
| commit | 0eb2766dd6f366d42448121c383420bb0307bcc7 (patch) | |
| tree | 1ddec8cfe3e9d51fa00765157199dfeeac88471b /drivers/gpu | |
| parent | 51c7b4477c8bf1b34b69f7697f70cd8396492ca6 (diff) | |
| download | lwn-0eb2766dd6f366d42448121c383420bb0307bcc7.tar.gz lwn-0eb2766dd6f366d42448121c383420bb0307bcc7.zip | |
drm/bridge: ti-tfp410: Set the bus_format
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.ujfalusi@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401124143.17179-3-peter.ujfalusi@ti.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-tfp410.c | 17 |
1 files changed, 17 insertions, 0 deletions
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) |