OERV-BSP/kernel-spacemit-k1
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k1:display: ignore HPD IRQ if HDMI suspended

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Change-Id: I1b73861871b1b641378c942c2a385a35151b68cc
This commit is contained in:
zhenglilang
2025-06-23 10:01:16 +08:00
committed by 张猛
parent 82d6e838de
commit 4f44e051e2
1 changed files with 26 additions and 0 deletions
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26
drivers/gpu/drm/spacemit/spacemit_hdmi.c
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@@ -71,6 +71,8 @@ struct spacemit_hdmi {
unsigned int tmds_rate;
struct mutex lock;
bool suspended;
bool edid_done;
bool use_no_edid;
struct hdmi_data_info *hdmi_data;
@@ -752,6 +754,14 @@ spacemit_hdmi_connector_detect(struct drm_connector *connector, bool force)
DRM_DEBUG("%s() \n", __func__);
mutex_lock(&hdmi->lock);
if (hdmi->suspended) {
DRM_DEBUG("%s() hdmi is suspended\n", __func__);
mutex_unlock(&hdmi->lock);
return connector_status_disconnected;
}
mutex_unlock(&hdmi->lock);
ret = pm_runtime_get_sync(hdmi->dev);
if (ret < 0) {
DRM_INFO("%s() pm_runtime_get_sync failed\n", __func__);
@@ -976,6 +986,8 @@ static int spacemit_hdmi_bind(struct device *dev, struct device *master,
spacemit_hdmi_reset(hdmi);
hdmi->edid_done = false;
hdmi->suspended = false;
mutex_init(&hdmi->lock);
ret = spacemit_hdmi_register(drm, hdmi);
@@ -1006,6 +1018,8 @@ static void spacemit_hdmi_unbind(struct device *dev, struct device *master,
hdmi->connector.funcs->destroy(&hdmi->connector);
hdmi->encoder.funcs->destroy(&hdmi->encoder);
mutex_destroy(&hdmi->lock);
pm_runtime_put_sync(&pdev->dev);
if (!IS_ERR_OR_NULL(hdmi->hdmi_reset)) {
ret = reset_control_assert(hdmi->hdmi_reset);
@@ -1077,6 +1091,9 @@ static int hdmi_drv_pm_suspend(struct device *dev)
DRM_DEBUG("%s()\n", __func__);
mutex_lock(&hdmi->lock);
hdmi->suspended = true;
value = hdmi_readb(hdmi, SPACEMIT_HDMI_PHY_STATUS);
value &= (~SPACEMIT_HDMI_HPD_IQR_MASK);
value |= SPACEMIT_HDMI_HPD_IQR;
@@ -1084,6 +1101,7 @@ static int hdmi_drv_pm_suspend(struct device *dev)
udelay(5);
clk_disable_unprepare(hdmi->hdmi_mclk);
mutex_unlock(&hdmi->lock);
return 0;
}
@@ -1095,6 +1113,7 @@ static int hdmi_drv_pm_resume(struct device *dev)
DRM_DEBUG("%s()\n", __func__);
mutex_lock(&hdmi->lock);
clk_prepare_enable(hdmi->hdmi_mclk);
udelay(5);
@@ -1102,6 +1121,13 @@ static int hdmi_drv_pm_resume(struct device *dev)
value |= SPACEMIT_HDMI_HPD_IQR_MASK;
hdmi_writeb(hdmi, SPACEMIT_HDMI_PHY_STATUS, value);
hdmi->suspended = false;
mutex_unlock(&hdmi->lock);
if (hdmi_get_plug_in_status(hdmi)) {
drm_helper_hpd_irq_event(hdmi->connector.dev);
}
return 0;
}