ASoC: SOF: Intel: hda-dsp: Expose hda_dsp_core_power_up()

The hda_dsp_core_power_up() needs to be exposed so that it can be used in
hda-loader.c to correct the boot flow.
The first step must not unstall the core, it should only power up the
core(s).

Add sanity check for the core_mask while exposing it to be safe.

Complements: 2a68ff846164 ("ASoC: SOF: Intel: hda: Revisit IMR boot sequence")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220609085949.29062-2-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c
index 000ea90..e24eea7 100644 (file)
--- a/sound/soc/sof/intel/hda-dsp.c
+++ b/sound/soc/sof/intel/hda-dsp.c
@@ -181,12 +181,20 @@ int hda_dsp_core_run(struct snd_sof_dev *sdev, unsigned int core_mask)
  * Power Management.
  */
 
-static int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask)
+int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask)
 {
+       struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
+       const struct sof_intel_dsp_desc *chip = hda->desc;
        unsigned int cpa;
        u32 adspcs;
        int ret;
 
+       /* restrict core_mask to host managed cores mask */
+       core_mask &= chip->host_managed_cores_mask;
+       /* return if core_mask is not valid */
+       if (!core_mask)
+               return 0;
+
        /* update bits */
        snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS,
                                HDA_DSP_ADSPCS_SPA_MASK(core_mask),

diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index 3e0f7b0..0f57ef5 100644 (file)
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -497,6 +497,7 @@ struct sof_intel_hda_stream {
  */
 int hda_dsp_probe(struct snd_sof_dev *sdev);
 int hda_dsp_remove(struct snd_sof_dev *sdev);
+int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask);
 int hda_dsp_core_run(struct snd_sof_dev *sdev, unsigned int core_mask);
 int hda_dsp_enable_core(struct snd_sof_dev *sdev, unsigned int core_mask);
 int hda_dsp_core_reset_power_down(struct snd_sof_dev *sdev,