[ALSA] hda: enable unsolicited responses
HDA Intel driver
Patch enables unsolicited responses on the HDA controller. Without
the UREN bit set, the controller will not place unsolicited responses
in a RIRB.
Signed-off-by: Matt <matt@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 5e0cca3..288ab07 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/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);