mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 06:33:41 +00:00
61 lines
2.0 KiB
Diff
61 lines
2.0 KiB
Diff
|
From d9440f7cb8fa5853b9dcc6e2b165725ac3e8b70c Mon Sep 17 00:00:00 2001
|
||
|
|
From: Laurentiu Palcu <laurentiu.palcu@nxp.com>
|
||
|
|
Date: Wed, 27 Nov 2019 13:34:51 +0200
|
||
|
|
Subject: [PATCH] drm/imx/hdp: fix issue with non-SCDC HDMI sinks
|
||
|
|
|
||
|
|
Currently, if sink does not support SCDC, even if the sink is HDMI 1.4 or 2.0,
|
||
|
|
the hdmi_type is left to default value (MODE_DVI). Hence the HDMI controler is
|
||
|
|
not properly initialized when cdns_hdmi_ctrl_init() is called.
|
||
|
|
|
||
|
|
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
|
||
|
|
Reported-by: Jared Hu <jared.hu@nxp.com>
|
||
|
|
Reviewed-by: Sandor Yu <sandor.yu@nxp.com>
|
||
|
|
---
|
||
|
|
drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c | 20 ++++++++++----------
|
||
|
|
1 file changed, 10 insertions(+), 10 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
|
||
|
|
+++ b/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
|
||
|
|
@@ -29,11 +29,17 @@
|
||
|
|
static void hdmi_sink_config(struct cdns_mhdp_device *mhdp)
|
||
|
|
{
|
||
|
|
struct drm_scdc *scdc = &mhdp->connector.base.display_info.hdmi.scdc;
|
||
|
|
- u8 buff;
|
||
|
|
+ struct drm_display_info *di = &mhdp->connector.base.display_info;
|
||
|
|
+ u8 buff = 0;
|
||
|
|
+
|
||
|
|
+ if (scdc->supported || di->color_formats & DRM_COLOR_FORMAT_YCRCB420)
|
||
|
|
+ mhdp->hdmi.hdmi_type = MODE_HDMI_2_0;
|
||
|
|
+ else
|
||
|
|
+ mhdp->hdmi.hdmi_type = MODE_HDMI_1_4;
|
||
|
|
|
||
|
|
/* check sink support SCDC or not */
|
||
|
|
- if (scdc->supported != true) {
|
||
|
|
- DRM_INFO("Sink Not Support SCDC\n");
|
||
|
|
+ if (!scdc->supported) {
|
||
|
|
+ DRM_INFO("Sink does not support SCDC\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
@@ -43,19 +49,13 @@ static void hdmi_sink_config(struct cdns
|
||
|
|
* Enable scrambling and TMDS_Bit_Clock_Ratio
|
||
|
|
*/
|
||
|
|
buff = SCDC_TMDS_BIT_CLOCK_RATIO_BY_40 | SCDC_SCRAMBLING_ENABLE;
|
||
|
|
- mhdp->hdmi.hdmi_type = MODE_HDMI_2_0;
|
||
|
|
} else if (scdc->scrambling.low_rates) {
|
||
|
|
/*
|
||
|
|
* Enable scrambling and HDMI2.0 when scrambling capability of sink
|
||
|
|
* be indicated in the HF-VSDB LTE_340Mcsc_scramble bit
|
||
|
|
*/
|
||
|
|
buff = SCDC_SCRAMBLING_ENABLE;
|
||
|
|
- mhdp->hdmi.hdmi_type = MODE_HDMI_2_0;
|
||
|
|
- } else {
|
||
|
|
- /* Default work in HDMI1.4 */
|
||
|
|
- buff = 0;
|
||
|
|
- mhdp->hdmi.hdmi_type = MODE_HDMI_1_4;
|
||
|
|
- }
|
||
|
|
+ }
|
||
|
|
|
||
|
|
/* TMDS config */
|
||
|
|
cdns_hdmi_scdc_write(mhdp, 0x20, buff);
|