2024-12-19 21:34:44 +00:00
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From 75de359ba10ba1e9f39a8cbf4228fd78e5e5c10c Mon Sep 17 00:00:00 2001
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2024-12-15 18:29:23 +00:00
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From: denglei <denglei@eswincomputing.com>
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Date: Tue, 22 Oct 2024 09:53:00 +0800
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Subject: [PATCH 194/219] fix:Solving hdmi display compatibility issues.
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Changelogs:
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HKC monitor, after multiple hot plugging, fails to display.
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Signed-off-by: denglei <denglei@eswincomputing.com>
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---
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drivers/gpu/drm/eswin/dw-hdmi.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/eswin/dw-hdmi.c b/drivers/gpu/drm/eswin/dw-hdmi.c
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index 552b80ccacdb..ba5aae273162 100644
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--- a/drivers/gpu/drm/eswin/dw-hdmi.c
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+++ b/drivers/gpu/drm/eswin/dw-hdmi.c
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@@ -311,7 +311,9 @@ static void repo_hpd_event(struct work_struct *p_work)
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mutex_unlock(&hdmi->mutex);
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if (hdmi->bridge.dev) {
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- drm_helper_hpd_irq_event(hdmi->bridge.dev);
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+ if (drm_helper_hpd_irq_event(hdmi->bridge.dev)) {
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+ dev_info(hdmi->dev, "hpd event report status:%d\n", hdmi->last_connector_result);
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+ }
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}
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msleep(150);
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@@ -632,6 +634,7 @@ static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap,
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}
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if (ret < 0) {
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dev_info(hdmi->dev, "i2c transfer fail\n");
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+ udelay(200 * 1000);
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break;
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}
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}
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@@ -2748,6 +2751,8 @@ static enum drm_connector_status dw_hdmi_detect(struct dw_hdmi *hdmi)
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result = hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data);
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hdmi->last_connector_result = result;
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+ dev_dbg(hdmi->dev, "detect connector status:%d\n", result);
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+
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return result;
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}
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--
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2.47.0
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