[PATCH v2 3/4] ALSA: hda: intel-nhlt: add intel_nhlt_ssp_mclk_mask()

[Takashi Iwai]

On Mon, 19 Sep 2022 13:53:49 +0200,
Pierre-Louis Bossart wrote:
> 
> SOF topologies hard-code the MCLK used for SSP connections. That was a
> bad idea in hindsight, this information should really come from BIOS
> and/or machine driver.
> 
> This patch introduces a helper to scan all SSP endpoints connected to
> a codec, and all formats to see what MCLK is used. When BIT(0) of the
> mdivc offset if set in the SSP blob, MCLK0 is used, and likewise when
> BIT(1) is set MCLK1 is used.
> 
> The case where both MCLKs are used is possible but has never been seen
> in practice so should be treated as an error by the caller.
> 
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
> Reviewed-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
> Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>

Reviewed-by: Takashi Iwai <tiwai at suse.de>


thanks,

Takashi