ASoC: SOF: mediatek: add adsp debug dump

Add mt8188 and mt8186 .dbg_dump callback to print some information when
DSP panic occurs.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Yaochun Hung <yc.hung@mediatek.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230601034939.15802-2-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/mediatek/mt8186/mt8186.c

@@ -24,6 +24,7 @@
 #include "../../sof-of-dev.h"
 #include "../../sof-audio.h"
 #include "../adsp_helper.h"
+#include "../mtk-adsp-common.h"
 #include "mt8186.h"
 #include "mt8186-clk.h"
 
@@ -473,6 +474,26 @@ static snd_pcm_uframes_t mt8186_pcm_pointer(struct snd_sof_dev *sdev,
 	return pos;
 }
 
+static void mt8186_adsp_dump(struct snd_sof_dev *sdev, u32 flags)
+{
+	u32 dbg_pc, dbg_data, dbg_inst, dbg_ls0stat, dbg_status, faultinfo;
+
+	/* dump debug registers */
+	dbg_pc = snd_sof_dsp_read(sdev, DSP_REG_BAR, DSP_PDEBUGPC);
+	dbg_data = snd_sof_dsp_read(sdev, DSP_REG_BAR, DSP_PDEBUGDATA);
+	dbg_inst = snd_sof_dsp_read(sdev, DSP_REG_BAR, DSP_PDEBUGINST);
+	dbg_ls0stat = snd_sof_dsp_read(sdev, DSP_REG_BAR, DSP_PDEBUGLS0STAT);
+	dbg_status = snd_sof_dsp_read(sdev, DSP_REG_BAR, DSP_PDEBUGSTATUS);
+	faultinfo = snd_sof_dsp_read(sdev, DSP_REG_BAR, DSP_PFAULTINFO);
+
+	dev_info(sdev->dev, "adsp dump : pc %#x, data %#x, dbg_inst %#x,",
+		 dbg_pc, dbg_data, dbg_inst);
+	dev_info(sdev->dev, "ls0stat %#x, status %#x, faultinfo %#x",
+		 dbg_ls0stat, dbg_status, faultinfo);
+
+	mtk_adsp_dump(sdev, flags);
+}
+
 static struct snd_soc_dai_driver mt8186_dai[] = {
 {
 	.name = "SOF_DL1",
@@ -555,6 +576,7 @@ static struct snd_sof_dsp_ops sof_mt8186_ops = {
 	.num_drv	= ARRAY_SIZE(mt8186_dai),
 
 	/* Debug information */
+	.dbg_dump = mt8186_adsp_dump,
 	.debugfs_add_region_item = snd_sof_debugfs_add_region_item_iomem,
 
 	/* PM */

sound/soc/sof/mediatek/mt8186/mt8186.h

@@ -38,6 +38,11 @@ struct snd_sof_dev;
 #define DSP_MBOX3_IRQ_EN		BIT(3)
 #define DSP_MBOX4_IRQ_EN		BIT(4)
 #define DSP_PDEBUGPC			0x013C
+#define DSP_PDEBUGDATA			0x0140
+#define DSP_PDEBUGINST			0x0144
+#define DSP_PDEBUGLS0STAT		0x0148
+#define DSP_PDEBUGSTATUS		0x014C
+#define DSP_PFAULTINFO			0x0150
 #define ADSP_CK_EN			0x1000
 #define CORE_CLK_EN			BIT(0)
 #define COREDBG_EN			BIT(1)