[alsa-devel] [PATCH] ALSA: hda - apply CS420X erratum fix for CS4207 only

[Mohammad Bahathir Hashim]

I am happy to report, that the patch works on my MacBookPro6,2 with
vanilla Linux 2.6.37. 

Arigatou Gozaimasita. :)
Thank you.

On 2011-03-03, Takashi Iwai <tiwai at suse.de> wrote:
> OK, to be sure, try the patch below.
>
>
> thanks,
>
> Takashi
>
> ---
> From: Takashi Iwai <tiwai at suse.de>
> Date: Thu, 3 Mar 2011 14:54:19 +0100
> Subject: [PATCH] ALSA: hda - Don't set to D3 in Cirrus errata init verbs
>
> The errata init verbs for CS42xx codecs contain the verbs to set
> the power-state of SPDIF nodes to D3, which seem to break the SPDIF
> output on some MacBooks.  Since this is executed during the power-up
> initialization, we shouldn't turn them down there.
>
> Reported-by: Arun Raghavan <arun.raghavan at collabora.co.uk>
> Signed-off-by: Takashi Iwai <tiwai at suse.de>
> ---
>  sound/pci/hda/patch_cirrus.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
> index a07b031..067982f 100644
> --- a/sound/pci/hda/patch_cirrus.c
> +++ b/sound/pci/hda/patch_cirrus.c
> @@ -1039,9 +1039,11 @@ static struct hda_verb cs_errata_init_verbs[] = {
>  	{0x11, AC_VERB_SET_PROC_COEF, 0x0008},
>  	{0x11, AC_VERB_SET_PROC_STATE, 0x00},
>  
> +#if 0 /* Don't to set to D3 as we are in power-up sequence */
>  	{0x07, AC_VERB_SET_POWER_STATE, 0x03}, /* S/PDIF Rx: D3 */
>  	{0x08, AC_VERB_SET_POWER_STATE, 0x03}, /* S/PDIF Tx: D3 */
>  	/*{0x01, AC_VERB_SET_POWER_STATE, 0x03},*/ /* AFG: D3 This is already handled */
> +#endif
>  
>  	{} /* terminator */
>  };