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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-06-02 23:56:20 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-06-05 16:01:00 +0300 |
| commit | d3e7c32b7d5c7132edca6d84499ec8ac2f060aa7 (patch) | |
| tree | 67c1c76d397f210c0af58bad0e145a5369a31c77 /sound/soc/sof/intel/hda.c | |
| parent | 730025cffedc6b8887d72031795796ac6d9947c3 (diff) | |
| download | linux-d3e7c32b7d5c7132edca6d84499ec8ac2f060aa7.tar.xz | |
ASoC: SOF: Intel: hda: add helper to extract SoundWire link count
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>
Diffstat (limited to 'sound/soc/sof/intel/hda.c')
| -rw-r--r-- | sound/soc/sof/intel/hda.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 835c2568dd60..066f27e3402f 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -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; |