hda: enable unsolicited responses

Patch enables unsolicited responses on the HDA controller. Without the UREN bit set, the controller will not place unsolicited responses in a RIRB.

Index: alsa-kernel/pci/hda/hda_intel.c
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/pci/hda/hda_intel.c,v retrieving revision 1.12

diff -u -r1.12 hda_intel.c
@@ -178,6 +178,9 @@
 #define ICH6_INT_CTRL_EN	0x40000000	/* controller interrupt enable bit */
 #define ICH6_INT_GLOBAL_EN	0x80000000	/* global interrupt enable bit */
 
+/* GCTL unsolicited response enable bit */
+#define ICH6_GCTL_UREN		(1<<8)
+
 /* GCTL reset bit */
 #define ICH6_GCTL_RESET		(1<<0)
 

@@ -562,6 +565,9 @@
 		return -EBUSY;
 	}
 
+	/* Accept unsolicited responses */
+	azx_writel(chip, GCTL, azx_readl(chip, GCTL) | ICH6_GCTL_UREN);
+
 	/* detect codecs */
 	if (! chip->codec_mask) {
 		chip->codec_mask = azx_readw(chip, STATESTS);

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Adds support for detecting hp insertion/removal and enable/disable of lineouts based on unsolicited events.

Index: alsa-kernel/pci/hda/hda_codec.h
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/pci/hda/hda_codec.h,v retrieving revision 1.9

diff -u -r1.9 hda_codec.h
@@ -262,6 +262,9 @@
 #define AC_PINCTL_OUT_EN		(1<<6)
 #define AC_PINCTL_HP_EN			(1<<7)
 
+/* Unsolicited response - 8bit */
+#define AC_USRSP_EN			(1<<7)
+
 /* configuration default - 32bit */
 #define AC_DEFCFG_SEQUENCE		(0xf<<0)
 #define AC_DEFCFG_DEF_ASSOC		(0xf<<4)

Index: alsa-kernel/pci/hda/patch_sigmatel.c
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/pci/hda/patch_sigmatel.c,v retrieving revision 1.5

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At Fri, 1 Jul 2005 08:55:31 -0700,

Thanks! Both are applied to CVS now.

Takashi

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