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Set hot plug interrupt to detect HDMI output 

We detect HDMI output connection status by writing to HOT Plug Interrupt
Detect Enable bit in PORT_HOTPLUG_EN. The behavior will generate an specified
interrupt, which is caught by audio driver, but during one detection driver
set all Detect Enable bits of HDMIB, HDMIC and HDMID, which 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 fredesktop bug #21371

Signed-off-by: Ma Ling <ling.ma@intel.com>
This commit is contained in:
ling.ma@intel.com 2009-06-16 16:47:52 +08:00 committed by Zhenyu Wang
parent 6b93afc564
commit a6cdcd9fee
1 changed files with 13 additions and 5 deletions
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18
src/i830_hdmi.c
View File

@ -166,14 +166,22 @@ i830_hdmi_detect(xf86OutputPtr output)
temp = INREG(PORT_HOTPLUG_EN);
OUTREG(PORT_HOTPLUG_EN,
temp |
HDMIB_HOTPLUG_INT_EN |
HDMIC_HOTPLUG_INT_EN |
HDMID_HOTPLUG_INT_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;