diff options
Diffstat (limited to 'sound/soc/sof/intel/hda.c')
| -rw-r--r-- | sound/soc/sof/intel/hda.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 2dc828866b5b..2f9d69e64091 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -238,10 +238,45 @@ static int hda_sdw_probe(struct snd_sof_dev *sdev) return 0; } +int hda_sdw_check_lcount_common(struct snd_sof_dev *sdev) +{ + struct sof_intel_hda_dev *hdev; + struct sdw_intel_ctx *ctx; + u32 caps; + + hdev = sdev->pdata->hw_pdata; + ctx = hdev->sdw; + + caps = snd_sof_dsp_read(sdev, HDA_DSP_BAR, ctx->shim_base + SDW_SHIM_LCAP); + caps &= SDW_SHIM_LCAP_LCOUNT_MASK; + + /* Check HW supported vs property value */ + if (caps < ctx->count) { + dev_err(sdev->dev, + "BIOS master count %d is larger than hardware capabilities %d\n", + ctx->count, caps); + return -EINVAL; + } + + return 0; +} + +static int hda_sdw_check_lcount(struct snd_sof_dev *sdev) +{ + const struct sof_intel_dsp_desc *chip; + + chip = get_chip_info(sdev->pdata); + if (chip && chip->read_sdw_lcount) + return chip->read_sdw_lcount(sdev); + + return 0; +} + int hda_sdw_startup(struct snd_sof_dev *sdev) { struct sof_intel_hda_dev *hdev; struct snd_sof_pdata *pdata = sdev->pdata; + int ret; hdev = sdev->pdata->hw_pdata; @@ -251,6 +286,10 @@ int hda_sdw_startup(struct snd_sof_dev *sdev) if (pdata->machine && !pdata->machine->mach_params.link_mask) return 0; + ret = hda_sdw_check_lcount(sdev); + if (ret < 0) + return ret; + return sdw_intel_startup(hdev->sdw); } |