[PATCH v2 7/8] ASoC: SOF: hda/shim: Add callbacks to handle mic privacy change for sdw

[Peter Ujfalusi <peter.ujfalusi@linux.intel.com>]

Add generic callback definitions for checking the mic privacy interrupt and
status.
Implement wrappers for mic privacy reported via the Soundwire interrupt and
its vendor specific SHIM registers.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
---
 sound/soc/sof/intel/hda.c  | 34 ++++++++++++++++++++++++++++++++++
 sound/soc/sof/intel/shim.h |  2 ++
 2 files changed, 36 insertions(+)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index a1ccd95da8bb..6b1ada566476 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -352,6 +352,27 @@ void hda_sdw_process_wakeen_common(struct snd_sof_dev *sdev)
 }
 EXPORT_SYMBOL_NS(hda_sdw_process_wakeen_common, "SND_SOC_SOF_INTEL_HDA_GENERIC");
 
+static bool hda_dsp_sdw_check_mic_privacy_irq(struct snd_sof_dev *sdev)
+{
+	const struct sof_intel_dsp_desc *chip;
+
+	chip = get_chip_info(sdev->pdata);
+	if (chip && chip->check_mic_privacy_irq)
+		return chip->check_mic_privacy_irq(sdev, true,
+						   AZX_REG_ML_LEPTR_ID_SDW);
+
+	return false;
+}
+
+static void hda_dsp_sdw_process_mic_privacy(struct snd_sof_dev *sdev)
+{
+	const struct sof_intel_dsp_desc *chip;
+
+	chip = get_chip_info(sdev->pdata);
+	if (chip && chip->process_mic_privacy)
+		chip->process_mic_privacy(sdev, true, AZX_REG_ML_LEPTR_ID_SDW);
+}
+
 #else /* IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE) */
 static inline int hda_sdw_acpi_scan(struct snd_sof_dev *sdev)
 {
@@ -383,6 +404,13 @@ static inline bool hda_sdw_check_wakeen_irq(struct snd_sof_dev *sdev)
 	return false;
 }
 
+static inline bool hda_dsp_sdw_check_mic_privacy_irq(struct snd_sof_dev *sdev)
+{
+	return false;
+}
+
+static inline void hda_dsp_sdw_process_mic_privacy(struct snd_sof_dev *sdev) { }
+
 #endif /* IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE) */
 
 /* pre fw run operations */
@@ -678,7 +706,13 @@ static irqreturn_t hda_dsp_interrupt_thread(int irq, void *context)
 
 	if (hda_dsp_check_sdw_irq(sdev)) {
 		trace_sof_intel_hda_irq(sdev, "sdw");
+
 		hda_dsp_sdw_thread(irq, hdev->sdw);
+
+		if (hda_dsp_sdw_check_mic_privacy_irq(sdev)) {
+			trace_sof_intel_hda_irq(sdev, "mic privacy");
+			hda_dsp_sdw_process_mic_privacy(sdev);
+		}
 	}
 
 	if (hda_sdw_check_wakeen_irq(sdev)) {
diff --git a/sound/soc/sof/intel/shim.h b/sound/soc/sof/intel/shim.h
index 8709b750a11e..d4372f0bff7e 100644
--- a/sound/soc/sof/intel/shim.h
+++ b/sound/soc/sof/intel/shim.h
@@ -193,6 +193,8 @@ struct sof_intel_dsp_desc {
 	bool (*check_sdw_wakeen_irq)(struct snd_sof_dev *sdev);
 	void (*sdw_process_wakeen)(struct snd_sof_dev *sdev);
 	bool (*check_ipc_irq)(struct snd_sof_dev *sdev);
+	bool (*check_mic_privacy_irq)(struct snd_sof_dev *sdev, bool alt, int elid);
+	void (*process_mic_privacy)(struct snd_sof_dev *sdev, bool alt, int elid);
 	int (*power_down_dsp)(struct snd_sof_dev *sdev);
 	int (*disable_interrupts)(struct snd_sof_dev *sdev);
 	int (*cl_init)(struct snd_sof_dev *sdev, int stream_tag, bool imr_boot);
-- 
2.48.1