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ASoC: SOF: Intel: hda: add helper to extract SoundWire link count

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The register changed with the HDaudio integration, the information is
present in the extended link descriptor and not in the SHIM.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230602205620.310879-10-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2023-06-02 15:56:20 -05:00 committed by Mark Brown
parent 730025cffe
commit d3e7c32b7d
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GPG Key ID: 24D68B725D5487D0
2 changed files with 31 additions and 0 deletions
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25
sound/soc/sof/intel/hda.c
View File

@ -222,6 +222,31 @@ int hda_sdw_check_lcount_common(struct snd_sof_dev *sdev)
return 0;
}
int hda_sdw_check_lcount_ext(struct snd_sof_dev *sdev)
{
struct sof_intel_hda_dev *hdev;
struct sdw_intel_ctx *ctx;
struct hdac_bus *bus;
u32 slcount;
bus = sof_to_bus(sdev);
hdev = sdev->pdata->hw_pdata;
ctx = hdev->sdw;
slcount = hdac_bus_eml_get_count(bus, true, AZX_REG_ML_LEPTR_ID_SDW);
/* Check HW supported vs property value */
if (slcount < ctx->count) {
dev_err(sdev->dev,
"%s: BIOS master count %d is larger than hardware capabilities %d\n",
__func__, ctx->count, slcount);
return -EINVAL;
}
return 0;
}
static int hda_sdw_check_lcount(struct snd_sof_dev *sdev)
{
const struct sof_intel_dsp_desc *chip;

6
sound/soc/sof/intel/hda.h
View File

@ -781,6 +781,7 @@ int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd);
#if IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)
int hda_sdw_check_lcount_common(struct snd_sof_dev *sdev);
int hda_sdw_check_lcount_ext(struct snd_sof_dev *sdev);
int hda_sdw_startup(struct snd_sof_dev *sdev);
void hda_common_enable_sdw_irq(struct snd_sof_dev *sdev, bool enable);
void hda_sdw_int_enable(struct snd_sof_dev *sdev, bool enable);
@ -794,6 +795,11 @@ static inline int hda_sdw_check_lcount_common(struct snd_sof_dev *sdev)
return 0;
}
static inline int hda_sdw_check_lcount_ext(struct snd_sof_dev *sdev)
{
return 0;
}
static inline int hda_sdw_startup(struct snd_sof_dev *sdev)
{
return 0;