From: Ma Ling Date: Mon, 11 May 2009 03:33:22 +0000 (+0800) Subject: drm/i915: Set HDMI hot plug interrupt enable for only the output in question. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9d2949a4cdb77b9b5c243c79be6489d34d770c7c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Set HDMI hot plug interrupt enable for only the output in question. We detect HDMI output connection status by writing to HOT Plug Interrupt Detect Enable bit in PORT_HOTPLUG_EN. The behavior will generate a specified interrupt, which is caught by audio driver, but during one detection driver set all Detect Enable bits of HDMIB, HDMIC HDMID, and generate wrong interrupt signals for current output, according to the signals audio driver misunderstand device status. The patch intends to handle corresponding output precisely. It fixed freedesktop.org bug #21371 Signed-off-by: Ma Ling Signed-off-by: Eric Anholt --- diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 550374225388..d0983bb93a18 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -155,11 +155,18 @@ intel_hdmi_detect(struct drm_connector *connector) temp = I915_READ(PORT_HOTPLUG_EN); - I915_WRITE(PORT_HOTPLUG_EN, - temp | - HDMIB_HOTPLUG_INT_EN | - HDMIC_HOTPLUG_INT_EN | - HDMID_HOTPLUG_INT_EN); + switch (hdmi_priv->sdvox_reg) { + case SDVOB: + temp |= HDMIB_HOTPLUG_INT_EN; + break; + case SDVOC: + temp |= HDMIC_HOTPLUG_INT_EN; + break; + default: + return connector_status_unknown; + } + + I915_WRITE(PORT_HOTPLUG_EN, temp); POSTING_READ(PORT_HOTPLUG_EN);