From: Mark Brown <broonie@kernel.org>
Date: Tue, 8 Apr 2025 09:25:08 +0000 (+0100)
Subject: ASoC: Intel: avs: 16 channels support
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=1f4db3cb1a5984cf1b845a82f66f53947ffad6e5;p=users%2Fjedix%2Flinux-maple.git

ASoC: Intel: avs: 16 channels support

Merge series from Cezary Rojewski <cezary.rojewski@intel.com>:

Relatively small delta-wise patchset which raises max channels supported
from 8 to 16.  The existing limitation is software-based, not hardware
based.  The hardware, as per HDAudio specification, section 1.2.2,
(relevant register at SDnFMT, section 3.3.41) supports the
configurations for years.  The avs-driver becomes the first consumer of
that configuration on the Linux kernel side.

Set starts off with update to string_helpers so that functionality added
with parse_int_array_user() can be utilized in kernel-kernel
interactions.

Follow up is rasing the cap on HDAudio-library side.  The format
selection procedure found in the library is good-to-go as is.

Everything that follows these two patches is avs-driver specific:
- raise channels_max for every DAI-driver template
- provide i2s_test module parameter for testing purposes.  When combined
  with I2S loopback card, allows to test 16ch on most Intel hardware post
  Broadwell era
- adjust TDM masks to reflect the 8 -> 16 channels change
---

1f4db3cb1a5984cf1b845a82f66f53947ffad6e5
diff --cc sound/soc/intel/avs/board_selection.c
index 251269b5708d3,286d94df5f463..6f6137c3a02c8
--- a/sound/soc/intel/avs/board_selection.c
+++ b/sound/soc/intel/avs/board_selection.c
@@@ -19,14 -19,10 +19,14 @@@
  #include "avs.h"
  #include "utils.h"
  
- static bool i2s_test;
- module_param(i2s_test, bool, 0444);
- MODULE_PARM_DESC(i2s_test, "Probe I2S test-board and skip all other I2S boards");
+ static char *i2s_test;
+ module_param(i2s_test, charp, 0444);
+ MODULE_PARM_DESC(i2s_test, "Use I2S test-board instead of ACPI, i2s_test=ssp0tdm,ssp1tdm,... 0 to ignore port");
  
 +bool obsolete_card_names = IS_ENABLED(CONFIG_SND_SOC_INTEL_AVS_CARDNAME_OBSOLETE);
 +module_param_named(obsolete_card_names, obsolete_card_names, bool, 0444);
 +MODULE_PARM_DESC(obsolete_card_names, "Use obsolete card names 0=no, 1=yes");
 +
  static const struct dmi_system_id kbl_dmi_table[] = {
  	{
  		.matches = {
diff --cc sound/soc/intel/avs/pcm.c
index cb32377d922d4,9dd5215b2c721..af4e6fbadb012
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@@ -1396,9 -1334,10 +1396,9 @@@ int avs_dmic_platform_register(struct a
  }
  
  static const struct snd_soc_dai_driver i2s_dai_template = {
 -	.ops = &avs_dai_nonhda_be_ops,
  	.playback = {
  		.channels_min	= 1,
- 		.channels_max	= 8,
+ 		.channels_max	= AVS_CHANNELS_MAX,
  		.rates		= SNDRV_PCM_RATE_8000_192000 |
  				  SNDRV_PCM_RATE_12000 |
  				  SNDRV_PCM_RATE_24000 |