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: 2a68ff8 ("ASoC: SOF: Intel: hda: Revisit IMR boot sequence") Signed-off-by: Peter Ujfalusi <[email protected]> Reviewed-by: Pierre-Louis Bossart <[email protected]> Reviewed-by: Bard Liao <[email protected]> Reviewed-by: Ranjani Sridharan <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
t7abhay · Jun 24, 2022 · 08f8a93 · 08f8a93
1 parent ed0073b
commit 08f8a93
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diff --git 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
@@ -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,