Attachment 29552 Details for Bug 22717 – check whether the HDMI is connected or not by reading the EDID

[patch] check whether the HDMI is connected or not by reading the EDID

hdmi_debug2.patch (text/plain), 1.72 KB, created by ykzhao on 2009-09-15 02:05:58 UTC

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Creator: ykzhao

Created: 2009-09-15 02:05:58 UTC

Size: 1.72 KB

patch

obsolete

>Delete the hotplug detection for HDMI. It depends on the EDID.
>If there is no EDID or the EDID type is analog, it should be 
>marked as disconnected.
>---
> src/i830_hdmi.c |   41 -----------------------------------------
> 1 file changed, 41 deletions(-)
>
>Index: xf86_video_intel/src/i830_hdmi.c
>===================================================================
>--- xf86_video_intel.orig/src/i830_hdmi.c	2009-08-31 13:10:08.000000000 +0800
>+++ xf86_video_intel/src/i830_hdmi.c	2009-09-15 17:01:55.000000000 +0800
>@@ -155,48 +155,7 @@
> 
>     dev_priv->has_hdmi_sink = FALSE;
> 
>-    /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written 0xd.
>-     * Failure to do so will result in spurious interrupts being
>-     * generated on the port when a cable is not attached.
>-     */
>-    if (IS_G4X(pI830) && !IS_GM45(pI830)) {
>-	temp = INREG(PEG_BAND_GAP_DATA);
>-	OUTREG(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
>-    }
>-
>-    temp = INREG(PORT_HOTPLUG_EN);
>-
>-    switch (dev_priv->output_reg) {
>-    case SDVOB:
>-	temp |= HDMIB_HOTPLUG_INT_EN;
>-	break;
>-    case SDVOC:
>-	temp |= HDMIC_HOTPLUG_INT_EN;
>-	break;
>-    default:
>-	return XF86OutputStatusUnknown;
>-    }
>-
>-    OUTREG(PORT_HOTPLUG_EN, temp);
>-
>-    POSTING_READ(PORT_HOTPLUG_EN);
>-
>-    i830WaitForVblank(pScrn);
>-    switch (dev_priv->output_reg) {
>-    case SDVOB:
>-	bit = HDMIB_HOTPLUG_INT_STATUS;
>-	break;
>-    case SDVOC:
>-	bit = HDMIC_HOTPLUG_INT_STATUS;
>-	break;
>-    default:
>-	return XF86OutputStatusUnknown;
>-    }
>-
>-    if ((INREG(PORT_HOTPLUG_STAT) & bit) != 0)
> 	status = XF86OutputStatusConnected;
>-    else
>-	return XF86OutputStatusDisconnected;
> 
>     edid_mon = xf86OutputGetEDID (output, intel_output->pDDCBus);
>     if (!edid_mon || !DIGITAL(edid_mon->features.input_type))

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Attachments on bug 22717: 27582 | 27583 | 29388 | 29552

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