ASoC: SOF: Intel: hda-codec: add helpers to suspend and resume cmd_io

No functionality change, code move to have better split between
HDaudio codec management and core parts.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20221027193540.259520-16-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/hda-codec.c

@@ -269,6 +269,16 @@ void hda_codec_init_cmd_io(struct snd_sof_dev *sdev)
 }
 EXPORT_SYMBOL_NS_GPL(hda_codec_init_cmd_io, SND_SOC_SOF_HDA_AUDIO_CODEC);
 
+void hda_codec_resume_cmd_io(struct snd_sof_dev *sdev)
+{
+	struct hdac_bus *bus = sof_to_bus(sdev);
+
+	/* set up CORB/RIRB buffers if was on before suspend */
+	if (bus->cmd_dma_state)
+		snd_hdac_bus_init_cmd_io(bus);
+}
+EXPORT_SYMBOL_NS_GPL(hda_codec_resume_cmd_io, SND_SOC_SOF_HDA_AUDIO_CODEC);
+
 void hda_codec_stop_cmd_io(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
@@ -278,6 +288,17 @@ void hda_codec_stop_cmd_io(struct snd_sof_dev *sdev)
 }
 EXPORT_SYMBOL_NS_GPL(hda_codec_stop_cmd_io, SND_SOC_SOF_HDA_AUDIO_CODEC);
 
+void hda_codec_suspend_cmd_io(struct snd_sof_dev *sdev)
+{
+	struct hdac_bus *bus = sof_to_bus(sdev);
+
+	/* stop the CORB/RIRB DMA if it is On */
+	if (bus->cmd_dma_state)
+		snd_hdac_bus_stop_cmd_io(bus);
+
+}
+EXPORT_SYMBOL_NS_GPL(hda_codec_suspend_cmd_io, SND_SOC_SOF_HDA_AUDIO_CODEC);
+
 void hda_codec_rirb_status_clear(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);

sound/soc/sof/intel/hda-dsp.c

@@ -745,11 +745,10 @@ int hda_dsp_resume(struct snd_sof_dev *sdev)
 				}
 			}
 		}
+#endif
 
 		/* set up CORB/RIRB buffers if was on before suspend */
-		if (bus->cmd_dma_state)
-			snd_hdac_bus_init_cmd_io(bus);
-#endif
+		hda_codec_resume_cmd_io(sdev);
 
 		/* Set DSP power state */
 		ret = snd_sof_dsp_set_power_state(sdev, &target_state);
@@ -858,11 +857,10 @@ int hda_dsp_suspend(struct snd_sof_dev *sdev, u32 target_state)
 						HDA_VS_INTEL_EM2_L1SEN,
 						HDA_VS_INTEL_EM2_L1SEN);
 
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
 		/* stop the CORB/RIRB DMA if it is On */
-		if (bus->cmd_dma_state)
-			snd_hdac_bus_stop_cmd_io(bus);
+		hda_codec_suspend_cmd_io(sdev);
 
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
 		/* no link can be powered in s0ix state */
 		ret = snd_hdac_ext_bus_link_power_down_all(bus);
 		if (ret < 0) {

sound/soc/sof/intel/hda.h

@@ -719,7 +719,9 @@ void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable);
 void hda_codec_jack_check(struct snd_sof_dev *sdev);
 void hda_codec_check_for_state_change(struct snd_sof_dev *sdev);
 void hda_codec_init_cmd_io(struct snd_sof_dev *sdev);
+void hda_codec_resume_cmd_io(struct snd_sof_dev *sdev);
 void hda_codec_stop_cmd_io(struct snd_sof_dev *sdev);
+void hda_codec_suspend_cmd_io(struct snd_sof_dev *sdev);
 void hda_codec_detect_mask(struct snd_sof_dev *sdev);
 void hda_codec_rirb_status_clear(struct snd_sof_dev *sdev);
 bool hda_codec_check_rirb_status(struct snd_sof_dev *sdev);
@@ -733,7 +735,9 @@ static inline void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool ena
 static inline void hda_codec_jack_check(struct snd_sof_dev *sdev) { }
 static inline void hda_codec_check_for_state_change(struct snd_sof_dev *sdev) { }
 static inline void hda_codec_init_cmd_io(struct snd_sof_dev *sdev) { }
+static inline void hda_codec_resume_cmd_io(struct snd_sof_dev *sdev) { }
 static inline void hda_codec_stop_cmd_io(struct snd_sof_dev *sdev) { }
+static inline void hda_codec_suspend_cmd_io(struct snd_sof_dev *sdev) { }
 static inline void hda_codec_detect_mask(struct snd_sof_dev *sdev) { }
 static inline void hda_codec_rirb_status_clear(struct snd_sof_dev *sdev) { }
 static inline bool hda_codec_check_rirb_status(struct snd_sof_dev *sdev) { return false; }