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ASoC: SOF: Intel: hda: fixup HDaudio topology name with DMIC number

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The SOF project maintains 6 topologies for HDaudio (iDisp or
HDaudio+iDisp, no DMIC, 2 DMICs, 4 DMICs). The user is currently
required to manually rename the topology file used in
/lib/firmware/intel/sof-tplg. We can do better to avoid such
renames and use logic to select the relevant file.

The NHLT information can be used to figure out which topology file
should be used.

Alternatively, when NHLT is not present in ACPI tables or is possibly
incorrect, a module parameter can provide that information, e.g. on
Up^2 board with the test DMIC kit.

Tested on Up^2 board and Acer Swift-SF314-55

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190812160623.20821-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2019-08-12 11:06:23 -05:00 committed by Mark Brown
parent 6fa4e0cae6
commit 68b953aeb5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 64 additions and 12 deletions
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1
sound/soc/sof/intel/Kconfig
View File

@ -254,6 +254,7 @@ config SND_SOC_SOF_HDA
tristate
select SND_HDA_EXT_CORE if SND_SOC_SOF_HDA_LINK
select SND_SOC_HDAC_HDA if SND_SOC_SOF_HDA_AUDIO_CODEC
select SND_INTEL_NHLT
help
This option is not user-selectable but automagically handled by
'select' statements at a higher level

75
sound/soc/sof/intel/hda.c
View File

@ -19,6 +19,7 @@
#include <sound/hda_register.h>
#include <linux/module.h>
#include <sound/intel-nhlt.h>
#include <sound/sof.h>
#include <sound/sof/xtensa.h>
#include "../ops.h"
@ -49,6 +50,12 @@ module_param_named(use_msi, hda_use_msi, bool, 0444);
MODULE_PARM_DESC(use_msi, "SOF HDA use PCI MSI mode");
#endif
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
static int hda_dmic_num = -1;
module_param_named(dmic_num, hda_dmic_num, int, 0444);
MODULE_PARM_DESC(dmic_num, "SOF HDA DMIC number");
#endif
static const struct hda_dsp_msg_code hda_dsp_rom_msg[] = {
{HDA_DSP_ROM_FW_MANIFEST_LOADED, "status: manifest loaded"},
{HDA_DSP_ROM_FW_FW_LOADED, "status: fw loaded"},
@ -283,8 +290,26 @@ static int hda_init(struct snd_sof_dev *sdev)
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
static int check_nhlt_dmic(struct snd_sof_dev *sdev)
{
struct nhlt_acpi_table *nhlt;
int dmic_num;
nhlt = intel_nhlt_init(sdev->dev);
if (nhlt) {
dmic_num = intel_nhlt_get_dmic_geo(sdev->dev, nhlt);
intel_nhlt_free(nhlt);
if (dmic_num == 2 || dmic_num == 4)
return dmic_num;
}
return 0;
}
static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
const char *sof_tplg_filename)
const char *sof_tplg_filename,
const char *idisp_str,
const char *dmic_str)
{
const char *tplg_filename = NULL;
char *filename;
@ -298,7 +323,8 @@ static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
split_ext = strsep(&filename, ".");
if (split_ext) {
tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL,
"%s-idisp.tplg", split_ext);
"%s%s%s.tplg",
split_ext, idisp_str, dmic_str);
if (!tplg_filename)
return NULL;
}
@ -317,6 +343,9 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
struct snd_sof_pdata *pdata = sdev->pdata;
struct snd_soc_acpi_mach *mach;
const char *tplg_filename;
const char *idisp_str;
const char *dmic_str;
int dmic_num;
int codec_num = 0;
int i;
#endif
@ -381,17 +410,39 @@ static int hda_init_caps(struct snd_sof_dev *sdev)
dev_info(bus->dev, "using HDA machine driver %s now\n",
hda_mach->drv_name);
/* fixup topology file for HDMI only platforms */
if (codec_num == 1) {
/* use local variable for readability */
tplg_filename = pdata->tplg_filename;
tplg_filename = fixup_tplg_name(sdev, tplg_filename);
if (!tplg_filename) {
hda_codec_i915_exit(sdev);
return ret;
}
pdata->tplg_filename = tplg_filename;
if (codec_num == 1)
idisp_str = "-idisp";
else
idisp_str = "";
/* first check NHLT for DMICs */
dmic_num = check_nhlt_dmic(sdev);
/* allow for module parameter override */
if (hda_dmic_num != -1)
dmic_num = hda_dmic_num;
switch (dmic_num) {
case 2:
dmic_str = "-2ch";
break;
case 4:
dmic_str = "-4ch";
break;
default:
dmic_num = 0;
dmic_str = "";
break;
}
tplg_filename = pdata->tplg_filename;
tplg_filename = fixup_tplg_name(sdev, tplg_filename,
idisp_str, dmic_str);
if (!tplg_filename) {
hda_codec_i915_exit(sdev);
return ret;
}
pdata->tplg_filename = tplg_filename;
}
}