[PATCH v3 03/17] video: dw_hdmi: Extend the HPD detection
Jagan Teki
jagan at amarulasolutions.com
Wed Jan 17 08:51:40 CET 2024
From: Jagan Teki <jagan at edgeble.ai>
HPD detection on some DW HDMIdesigned SoC's would need to read and
setup the HPD status explicitly.
So, extend the HPD detection code by adding the dw_hdmi_detect_hpd
function and move the default detection code caller there.
The new read and setup hdp will integrate the same function in
later patches.
Signed-off-by: Jagan Teki <jagan at edgeble.ai>
---
Changes for v3, v2:
- none
drivers/video/dw_hdmi.c | 13 +++++++++++++
drivers/video/rockchip/rk_hdmi.c | 8 +++-----
drivers/video/sunxi/sunxi_dw_hdmi.c | 8 +++-----
include/dw_hdmi.h | 1 +
4 files changed, 20 insertions(+), 10 deletions(-)
diff --git a/drivers/video/dw_hdmi.c b/drivers/video/dw_hdmi.c
index 4914ba6146..3a3b9b7a21 100644
--- a/drivers/video/dw_hdmi.c
+++ b/drivers/video/dw_hdmi.c
@@ -936,6 +936,19 @@ int dw_hdmi_phy_wait_for_hpd(struct dw_hdmi *hdmi)
return -1;
}
+int dw_hdmi_detect_hpd(struct dw_hdmi *hdmi)
+{
+ int ret;
+
+ ret = dw_hdmi_phy_wait_for_hpd(hdmi);
+ if (ret < 0) {
+ debug("hdmi can not get hpd signal\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
void dw_hdmi_phy_init(struct dw_hdmi *hdmi)
{
/* enable phy i2cm done irq */
diff --git a/drivers/video/rockchip/rk_hdmi.c b/drivers/video/rockchip/rk_hdmi.c
index d5b5a529d2..16f6303513 100644
--- a/drivers/video/rockchip/rk_hdmi.c
+++ b/drivers/video/rockchip/rk_hdmi.c
@@ -114,11 +114,9 @@ int rk_hdmi_probe(struct udevice *dev)
dw_hdmi_init(hdmi);
dw_hdmi_phy_init(hdmi);
- ret = dw_hdmi_phy_wait_for_hpd(hdmi);
- if (ret < 0) {
- debug("hdmi can not get hpd signal\n");
- return -1;
- }
+ ret = dw_hdmi_detect_hpd(hdmi);
+ if (ret < 0)
+ return ret;
return 0;
}
diff --git a/drivers/video/sunxi/sunxi_dw_hdmi.c b/drivers/video/sunxi/sunxi_dw_hdmi.c
index 986e69d66b..a5e8d39e98 100644
--- a/drivers/video/sunxi/sunxi_dw_hdmi.c
+++ b/drivers/video/sunxi/sunxi_dw_hdmi.c
@@ -358,11 +358,9 @@ static int sunxi_dw_hdmi_probe(struct udevice *dev)
sunxi_dw_hdmi_phy_init(&priv->hdmi);
- ret = dw_hdmi_phy_wait_for_hpd(&priv->hdmi);
- if (ret < 0) {
- debug("hdmi can not get hpd signal\n");
- return -1;
- }
+ ret = dw_hdmi_detect_hpd(&priv->hdmi);
+ if (ret < 0)
+ return ret;
dw_hdmi_init(&priv->hdmi);
diff --git a/include/dw_hdmi.h b/include/dw_hdmi.h
index 17bdd2dbf9..ba2ce5ea7f 100644
--- a/include/dw_hdmi.h
+++ b/include/dw_hdmi.h
@@ -562,5 +562,6 @@ void dw_hdmi_phy_init(struct dw_hdmi *hdmi);
int dw_hdmi_enable(struct dw_hdmi *hdmi, const struct display_timing *edid);
int dw_hdmi_read_edid(struct dw_hdmi *hdmi, u8 *buf, int buf_size);
void dw_hdmi_init(struct dw_hdmi *hdmi);
+int dw_hdmi_detect_hpd(struct dw_hdmi *hdmi);
#endif
--
2.25.1
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