Commit 1a696978 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Don't initialize CORB/RIRB for single_cmd mode

So far, CORB/RIRB still remains even if the driver is switched to the
single_cmd mode.  The specification says that this should be disabled,
but I hoped this isn't the case; indeed most devices worked together with

However, Poulsbo (US15W) seems problematic with this setup, and it
requires to disable CORB/RIRB when single_cmd is used.

Now this patch disables CORB/RIRB initialization when the single_cmd
mode is used.  Also the unsolicited event is disabled because it can't
work without RIRB.

Reported-and-tested-by: default avatarTroy Kisky <>
Signed-off-by: default avatarTakashi Iwai <>
parent 78987bdc
......@@ -722,9 +722,10 @@ static unsigned int azx_rirb_get_response(struct hda_bus *bus,
chip->single_cmd = 1;
bus->response_reset = 0;
/* re-initialize CORB/RIRB */
/* release CORB/RIRB */
/* disable unsolicited responses */
azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_UNSOL);
return -1;
......@@ -865,7 +866,9 @@ static int azx_reset(struct azx *chip)
/* Accept unsolicited responses */
azx_writel(chip, GCTL, azx_readl(chip, GCTL) | ICH6_GCTL_UNSOL);
if (!chip->single_cmd)
azx_writel(chip, GCTL, azx_readl(chip, GCTL) |
/* detect codecs */
if (!chip->codec_mask) {
......@@ -980,7 +983,8 @@ static void azx_init_chip(struct azx *chip)
/* initialize the codec command I/O */
if (!chip->single_cmd)
/* program the position buffer */
azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr);
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