Merge remote-tracking branches 'asoc/topic/adsp', 'asoc/topic/ak4613',...

Merge remote-tracking branches 'asoc/topic/adsp', 'asoc/topic/ak4613', 'asoc/topic/au1761' and 'asoc/topic/blackfin' into asoc-next

sound/soc/blackfin/bfin-eval-adau1373.c

@@ -119,7 +119,7 @@ static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd)
 
 	return ret;
 }
-static struct snd_soc_ops bfin_eval_adau1373_ops = {
+static const struct snd_soc_ops bfin_eval_adau1373_ops = {
 	.hw_params = bfin_eval_adau1373_hw_params,
 };
 

sound/soc/blackfin/bfin-eval-adav80x.c

@@ -64,7 +64,7 @@ static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd)
 	return 0;
 }
 
-static struct snd_soc_ops bfin_eval_adav80x_ops = {
+static const struct snd_soc_ops bfin_eval_adav80x_ops = {
 	.hw_params = bfin_eval_adav80x_hw_params,
 };
 

sound/soc/codecs/Kconfig

@@ -303,12 +303,14 @@ config SND_SOC_ADAU1761
 	select SND_SOC_ADAU17X1
 
 config SND_SOC_ADAU1761_I2C
-	tristate
+	tristate "Analog Devices AU1761 CODEC - I2C"
+	depends on I2C
 	select SND_SOC_ADAU1761
 	select REGMAP_I2C
 
 config SND_SOC_ADAU1761_SPI
-	tristate
+	tristate "Analog Devices AU1761 CODEC - SPI"
+	depends on SPI
 	select SND_SOC_ADAU1761
 	select REGMAP_SPI
 

sound/soc/codecs/ak4613.c

@@ -75,6 +75,12 @@
 #define DFS_DOUBLE_SPEED	(1 << 2)
 #define DFS_QUAD_SPEED		(2 << 2)
 
+/* ICTRL */
+#define ICTRL_MASK	(0x3)
+
+/* OCTRL */
+#define OCTRL_MASK	(0x3F)
+
 struct ak4613_formats {
 	unsigned int width;
 	unsigned int fmt;
@@ -365,8 +371,8 @@ static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
 	snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
 	snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2);
 
-	snd_soc_write(codec, ICTRL, priv->ic);
-	snd_soc_write(codec, OCTRL, priv->oc);
+	snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic);
+	snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc);
 
 hw_params_end:
 	if (ret < 0)

sound/soc/codecs/wm_adsp.c

@@ -112,17 +112,22 @@
 #define ADSP1_CLK_SEL_SHIFT                    0  /* CLK_SEL_ENA */
 #define ADSP1_CLK_SEL_WIDTH                    3  /* CLK_SEL_ENA */
 
-#define ADSP2_CONTROL        0x0
-#define ADSP2_CLOCKING       0x1
-#define ADSP2_STATUS1        0x4
-#define ADSP2_WDMA_CONFIG_1 0x30
-#define ADSP2_WDMA_CONFIG_2 0x31
-#define ADSP2_RDMA_CONFIG_1 0x34
-
-#define ADSP2_SCRATCH0        0x40
-#define ADSP2_SCRATCH1        0x41
-#define ADSP2_SCRATCH2        0x42
-#define ADSP2_SCRATCH3        0x43
+#define ADSP2_CONTROL                     0x0
+#define ADSP2_CLOCKING                    0x1
+#define ADSP2V2_CLOCKING                  0x2
+#define ADSP2_STATUS1                     0x4
+#define ADSP2_WDMA_CONFIG_1               0x30
+#define ADSP2_WDMA_CONFIG_2               0x31
+#define ADSP2V2_WDMA_CONFIG_2             0x32
+#define ADSP2_RDMA_CONFIG_1               0x34
+
+#define ADSP2_SCRATCH0                    0x40
+#define ADSP2_SCRATCH1                    0x41
+#define ADSP2_SCRATCH2                    0x42
+#define ADSP2_SCRATCH3                    0x43
+
+#define ADSP2V2_SCRATCH0_1                0x40
+#define ADSP2V2_SCRATCH2_3                0x42
 
 /*
  * ADSP2 Control
@@ -152,6 +157,17 @@
 #define ADSP2_CLK_SEL_SHIFT                    0  /* CLK_SEL_ENA */
 #define ADSP2_CLK_SEL_WIDTH                    3  /* CLK_SEL_ENA */
 
+/*
+ * ADSP2V2 clocking
+ */
+#define ADSP2V2_CLK_SEL_MASK             0x70000  /* CLK_SEL_ENA */
+#define ADSP2V2_CLK_SEL_SHIFT                 16  /* CLK_SEL_ENA */
+#define ADSP2V2_CLK_SEL_WIDTH                  3  /* CLK_SEL_ENA */
+
+#define ADSP2V2_RATE_MASK                 0x7800  /* DSP_RATE */
+#define ADSP2V2_RATE_SHIFT                    11  /* DSP_RATE */
+#define ADSP2V2_RATE_WIDTH                     4  /* DSP_RATE */
+
 /*
  * ADSP2 Status 1
  */
@@ -160,6 +176,37 @@
 #define ADSP2_RAM_RDY_SHIFT                    0
 #define ADSP2_RAM_RDY_WIDTH                    1
 
+/*
+ * ADSP2 Lock support
+ */
+#define ADSP2_LOCK_CODE_0                    0x5555
+#define ADSP2_LOCK_CODE_1                    0xAAAA
+
+#define ADSP2_WATCHDOG                       0x0A
+#define ADSP2_BUS_ERR_ADDR                   0x52
+#define ADSP2_REGION_LOCK_STATUS             0x64
+#define ADSP2_LOCK_REGION_1_LOCK_REGION_0    0x66
+#define ADSP2_LOCK_REGION_3_LOCK_REGION_2    0x68
+#define ADSP2_LOCK_REGION_5_LOCK_REGION_4    0x6A
+#define ADSP2_LOCK_REGION_7_LOCK_REGION_6    0x6C
+#define ADSP2_LOCK_REGION_9_LOCK_REGION_8    0x6E
+#define ADSP2_LOCK_REGION_CTRL               0x7A
+#define ADSP2_PMEM_ERR_ADDR_XMEM_ERR_ADDR    0x7C
+
+#define ADSP2_REGION_LOCK_ERR_MASK           0x8000
+#define ADSP2_SLAVE_ERR_MASK                 0x4000
+#define ADSP2_WDT_TIMEOUT_STS_MASK           0x2000
+#define ADSP2_CTRL_ERR_PAUSE_ENA             0x0002
+#define ADSP2_CTRL_ERR_EINT                  0x0001
+
+#define ADSP2_BUS_ERR_ADDR_MASK              0x00FFFFFF
+#define ADSP2_XMEM_ERR_ADDR_MASK             0x0000FFFF
+#define ADSP2_PMEM_ERR_ADDR_MASK             0x7FFF0000
+#define ADSP2_PMEM_ERR_ADDR_SHIFT            16
+#define ADSP2_WDT_ENA_MASK                   0xFFFFFFFD
+
+#define ADSP2_LOCK_REGION_SHIFT              16
+
 #define ADSP_MAX_STD_CTRL_SIZE               512
 
 #define WM_ADSP_ACKED_CTL_TIMEOUT_MS         100
@@ -683,6 +730,9 @@ static const struct soc_enum wm_adsp_fw_enum[] = {
 	SOC_ENUM_SINGLE(0, 1, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
 	SOC_ENUM_SINGLE(0, 2, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
 	SOC_ENUM_SINGLE(0, 3, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
+	SOC_ENUM_SINGLE(0, 4, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
+	SOC_ENUM_SINGLE(0, 5, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
+	SOC_ENUM_SINGLE(0, 6, ARRAY_SIZE(wm_adsp_fw_text), wm_adsp_fw_text),
 };
 
 const struct snd_kcontrol_new wm_adsp_fw_controls[] = {
@@ -694,6 +744,12 @@ const struct snd_kcontrol_new wm_adsp_fw_controls[] = {
 		     wm_adsp_fw_get, wm_adsp_fw_put),
 	SOC_ENUM_EXT("DSP4 Firmware", wm_adsp_fw_enum[3],
 		     wm_adsp_fw_get, wm_adsp_fw_put),
+	SOC_ENUM_EXT("DSP5 Firmware", wm_adsp_fw_enum[4],
+		     wm_adsp_fw_get, wm_adsp_fw_put),
+	SOC_ENUM_EXT("DSP6 Firmware", wm_adsp_fw_enum[5],
+		     wm_adsp_fw_get, wm_adsp_fw_put),
+	SOC_ENUM_EXT("DSP7 Firmware", wm_adsp_fw_enum[6],
+		     wm_adsp_fw_get, wm_adsp_fw_put),
 };
 EXPORT_SYMBOL_GPL(wm_adsp_fw_controls);
 
@@ -750,6 +806,29 @@ static void wm_adsp2_show_fw_status(struct wm_adsp *dsp)
 		 be16_to_cpu(scratch[3]));
 }
 
+static void wm_adsp2v2_show_fw_status(struct wm_adsp *dsp)
+{
+	u32 scratch[2];
+	int ret;
+
+	ret = regmap_raw_read(dsp->regmap, dsp->base + ADSP2V2_SCRATCH0_1,
+			      scratch, sizeof(scratch));
+
+	if (ret) {
+		adsp_err(dsp, "Failed to read SCRATCH regs: %d\n", ret);
+		return;
+	}
+
+	scratch[0] = be32_to_cpu(scratch[0]);
+	scratch[1] = be32_to_cpu(scratch[1]);
+
+	adsp_dbg(dsp, "FW SCRATCH 0:0x%x 1:0x%x 2:0x%x 3:0x%x\n",
+		 scratch[0] & 0xFFFF,
+		 scratch[0] >> 16,
+		 scratch[1] & 0xFFFF,
+		 scratch[1] >> 16);
+}
+
 static inline struct wm_coeff_ctl *bytes_ext_to_ctl(struct soc_bytes_ext *ext)
 {
 	return container_of(ext, struct wm_coeff_ctl, bytes_ext);
@@ -2435,10 +2514,17 @@ static int wm_adsp2_ena(struct wm_adsp *dsp)
 	unsigned int val;
 	int ret, count;
 
-	ret = regmap_update_bits_async(dsp->regmap, dsp->base + ADSP2_CONTROL,
-				       ADSP2_SYS_ENA, ADSP2_SYS_ENA);
-	if (ret != 0)
-		return ret;
+	switch (dsp->rev) {
+	case 0:
+		ret = regmap_update_bits_async(dsp->regmap,
+					       dsp->base + ADSP2_CONTROL,
+					       ADSP2_SYS_ENA, ADSP2_SYS_ENA);
+		if (ret != 0)
+			return ret;
+		break;
+	default:
+		break;
+	}
 
 	/* Wait for the RAM to start, should be near instantaneous */
 	for (count = 0; count < 10; ++count) {
@@ -2497,11 +2583,17 @@ static void wm_adsp2_boot_work(struct work_struct *work)
 	if (ret != 0)
 		goto err_ena;
 
-	/* Turn DSP back off until we are ready to run */
-	ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
-				 ADSP2_SYS_ENA, 0);
-	if (ret != 0)
-		goto err_ena;
+	switch (dsp->rev) {
+	case 0:
+		/* Turn DSP back off until we are ready to run */
+		ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
+					 ADSP2_SYS_ENA, 0);
+		if (ret != 0)
+			goto err_ena;
+		break;
+	default:
+		break;
+	}
 
 	dsp->booted = true;
 
@@ -2523,12 +2615,21 @@ static void wm_adsp2_set_dspclk(struct wm_adsp *dsp, unsigned int freq)
 {
 	int ret;
 
-	ret = regmap_update_bits_async(dsp->regmap,
-				       dsp->base + ADSP2_CLOCKING,
-				       ADSP2_CLK_SEL_MASK,
-				       freq << ADSP2_CLK_SEL_SHIFT);
-	if (ret != 0)
-		adsp_err(dsp, "Failed to set clock rate: %d\n", ret);
+	switch (dsp->rev) {
+	case 0:
+		ret = regmap_update_bits_async(dsp->regmap,
+					       dsp->base + ADSP2_CLOCKING,
+					       ADSP2_CLK_SEL_MASK,
+					       freq << ADSP2_CLK_SEL_SHIFT);
+		if (ret) {
+			adsp_err(dsp, "Failed to set clock rate: %d\n", ret);
+			return;
+		}
+		break;
+	default:
+		/* clock is handled by parent codec driver */
+		break;
+	}
 }
 
 int wm_adsp2_preloader_get(struct snd_kcontrol *kcontrol,
@@ -2568,6 +2669,18 @@ int wm_adsp2_preloader_put(struct snd_kcontrol *kcontrol,
 }
 EXPORT_SYMBOL_GPL(wm_adsp2_preloader_put);
 
+static void wm_adsp_stop_watchdog(struct wm_adsp *dsp)
+{
+	switch (dsp->rev) {
+	case 0:
+	case 1:
+		return;
+	default:
+		regmap_update_bits(dsp->regmap, dsp->base + ADSP2_WATCHDOG,
+				   ADSP2_WDT_ENA_MASK, 0);
+	}
+}
+
 int wm_adsp2_early_event(struct snd_soc_dapm_widget *w,
 			 struct snd_kcontrol *kcontrol, int event,
 			 unsigned int freq)
@@ -2640,6 +2753,8 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
 		if (ret != 0)
 			goto err;
 
+		wm_adsp2_lock(dsp, dsp->lock_regions);
+
 		ret = regmap_update_bits(dsp->regmap,
 					 dsp->base + ADSP2_CONTROL,
 					 ADSP2_CORE_ENA | ADSP2_START,
@@ -2663,23 +2778,49 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
 		/* Tell the firmware to cleanup */
 		wm_adsp_signal_event_controls(dsp, WM_ADSP_FW_EVENT_SHUTDOWN);
 
+		wm_adsp_stop_watchdog(dsp);
+
 		/* Log firmware state, it can be useful for analysis */
-		wm_adsp2_show_fw_status(dsp);
+		switch (dsp->rev) {
+		case 0:
+			wm_adsp2_show_fw_status(dsp);
+			break;
+		default:
+			wm_adsp2v2_show_fw_status(dsp);
+			break;
+		}
 
 		mutex_lock(&dsp->pwr_lock);
 
 		dsp->running = false;
 
-		regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
+		regmap_update_bits(dsp->regmap,
+				   dsp->base + ADSP2_CONTROL,
 				   ADSP2_CORE_ENA | ADSP2_START, 0);
 
 		/* Make sure DMAs are quiesced */
-		regmap_write(dsp->regmap, dsp->base + ADSP2_RDMA_CONFIG_1, 0);
-		regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_1, 0);
-		regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_2, 0);
-
-		regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
-				   ADSP2_SYS_ENA, 0);
+		switch (dsp->rev) {
+		case 0:
+			regmap_write(dsp->regmap,
+				     dsp->base + ADSP2_RDMA_CONFIG_1, 0);
+			regmap_write(dsp->regmap,
+				     dsp->base + ADSP2_WDMA_CONFIG_1, 0);
+			regmap_write(dsp->regmap,
+				     dsp->base + ADSP2_WDMA_CONFIG_2, 0);
+
+			regmap_update_bits(dsp->regmap,
+					   dsp->base + ADSP2_CONTROL,
+					   ADSP2_SYS_ENA, 0);
+			break;
+		default:
+			regmap_write(dsp->regmap,
+				     dsp->base + ADSP2_RDMA_CONFIG_1, 0);
+			regmap_write(dsp->regmap,
+				     dsp->base + ADSP2_WDMA_CONFIG_1, 0);
+			regmap_write(dsp->regmap,
+				     dsp->base + ADSP2V2_WDMA_CONFIG_2, 0);
+			break;
+		}
 
 		if (wm_adsp_fw[dsp->fw].num_caps != 0)
 			wm_adsp_buffer_free(dsp);
@@ -2732,15 +2873,22 @@ int wm_adsp2_init(struct wm_adsp *dsp)
 {
 	int ret;
 
-	/*
-	 * Disable the DSP memory by default when in reset for a small
-	 * power saving.
-	 */
-	ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
-				 ADSP2_MEM_ENA, 0);
-	if (ret != 0) {
-		adsp_err(dsp, "Failed to clear memory retention: %d\n", ret);
-		return ret;
+	switch (dsp->rev) {
+	case 0:
+		/*
+		 * Disable the DSP memory by default when in reset for a small
+		 * power saving.
+		 */
+		ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
+					 ADSP2_MEM_ENA, 0);
+		if (ret) {
+			adsp_err(dsp,
+				 "Failed to clear memory retention: %d\n", ret);
+			return ret;
+		}
+		break;
+	default:
+		break;
 	}
 
 	INIT_LIST_HEAD(&dsp->alg_regions);
@@ -3523,4 +3671,94 @@ int wm_adsp_compr_copy(struct snd_compr_stream *stream, char __user *buf,
 }
 EXPORT_SYMBOL_GPL(wm_adsp_compr_copy);
 
+int wm_adsp2_lock(struct wm_adsp *dsp, unsigned int lock_regions)
+{
+	struct regmap *regmap = dsp->regmap;
+	unsigned int code0, code1, lock_reg;
+
+	if (!(lock_regions & WM_ADSP2_REGION_ALL))
+		return 0;
+
+	lock_regions &= WM_ADSP2_REGION_ALL;
+	lock_reg = dsp->base + ADSP2_LOCK_REGION_1_LOCK_REGION_0;
+
+	while (lock_regions) {
+		code0 = code1 = 0;
+		if (lock_regions & BIT(0)) {
+			code0 = ADSP2_LOCK_CODE_0;
+			code1 = ADSP2_LOCK_CODE_1;
+		}
+		if (lock_regions & BIT(1)) {
+			code0 |= ADSP2_LOCK_CODE_0 << ADSP2_LOCK_REGION_SHIFT;
+			code1 |= ADSP2_LOCK_CODE_1 << ADSP2_LOCK_REGION_SHIFT;
+		}
+		regmap_write(regmap, lock_reg, code0);
+		regmap_write(regmap, lock_reg, code1);
+		lock_regions >>= 2;
+		lock_reg += 2;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(wm_adsp2_lock);
+
+irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp)
+{
+	unsigned int val;
+	struct regmap *regmap = dsp->regmap;
+	int ret = 0;
+
+	ret = regmap_read(regmap, dsp->base + ADSP2_LOCK_REGION_CTRL, &val);
+	if (ret) {
+		adsp_err(dsp,
+			"Failed to read Region Lock Ctrl register: %d\n", ret);
+		return IRQ_HANDLED;
+	}
+
+	if (val & ADSP2_WDT_TIMEOUT_STS_MASK) {
+		adsp_err(dsp, "watchdog timeout error\n");
+		wm_adsp_stop_watchdog(dsp);
+	}
+
+	if (val & (ADSP2_SLAVE_ERR_MASK | ADSP2_REGION_LOCK_ERR_MASK)) {
+		if (val & ADSP2_SLAVE_ERR_MASK)
+			adsp_err(dsp, "bus error: slave error\n");
+		else
+			adsp_err(dsp, "bus error: region lock error\n");
+
+		ret = regmap_read(regmap, dsp->base + ADSP2_BUS_ERR_ADDR, &val);
+		if (ret) {
+			adsp_err(dsp,
+				 "Failed to read Bus Err Addr register: %d\n",
+				 ret);
+			return IRQ_HANDLED;
+		}
+
+		adsp_err(dsp, "bus error address = 0x%x\n",
+			 val & ADSP2_BUS_ERR_ADDR_MASK);
+
+		ret = regmap_read(regmap,
+				  dsp->base + ADSP2_PMEM_ERR_ADDR_XMEM_ERR_ADDR,
+				  &val);
+		if (ret) {
+			adsp_err(dsp,
+				 "Failed to read Pmem Xmem Err Addr register: %d\n",
+				 ret);
+			return IRQ_HANDLED;
+		}
+
+		adsp_err(dsp, "xmem error address = 0x%x\n",
+			 val & ADSP2_XMEM_ERR_ADDR_MASK);
+		adsp_err(dsp, "pmem error address = 0x%x\n",
+			 (val & ADSP2_PMEM_ERR_ADDR_MASK) >>
+			 ADSP2_PMEM_ERR_ADDR_SHIFT);
+	}
+
+	regmap_update_bits(regmap, dsp->base + ADSP2_LOCK_REGION_CTRL,
+			   ADSP2_CTRL_ERR_EINT, ADSP2_CTRL_ERR_EINT);
+
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL_GPL(wm_adsp2_bus_error);
+
 MODULE_LICENSE("GPL v2");

sound/soc/codecs/wm_adsp.h

@@ -23,6 +23,23 @@
 #define WM_ADSP_COMPR_OK                 0
 #define WM_ADSP_COMPR_VOICE_TRIGGER      1
 
+#define WM_ADSP2_REGION_0 BIT(0)
+#define WM_ADSP2_REGION_1 BIT(1)
+#define WM_ADSP2_REGION_2 BIT(2)
+#define WM_ADSP2_REGION_3 BIT(3)
+#define WM_ADSP2_REGION_4 BIT(4)
+#define WM_ADSP2_REGION_5 BIT(5)
+#define WM_ADSP2_REGION_6 BIT(6)
+#define WM_ADSP2_REGION_7 BIT(7)
+#define WM_ADSP2_REGION_8 BIT(8)
+#define WM_ADSP2_REGION_9 BIT(9)
+#define WM_ADSP2_REGION_1_9 (WM_ADSP2_REGION_1 | \
+		WM_ADSP2_REGION_2 | WM_ADSP2_REGION_3 | \
+		WM_ADSP2_REGION_4 | WM_ADSP2_REGION_5 | \
+		WM_ADSP2_REGION_6 | WM_ADSP2_REGION_7 | \
+		WM_ADSP2_REGION_8 | WM_ADSP2_REGION_9)
+#define WM_ADSP2_REGION_ALL (WM_ADSP2_REGION_0 | WM_ADSP2_REGION_1_9)
+
 struct wm_adsp_region {
 	int type;
 	unsigned int base;
@@ -40,6 +57,7 @@ struct wm_adsp_compr_buf;
 
 struct wm_adsp {
 	const char *part;
+	int rev;
 	int num;
 	int type;
 	struct device *dev;
@@ -75,6 +93,8 @@ struct wm_adsp {
 
 	struct mutex pwr_lock;
 
+	unsigned int lock_regions;
+
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_root;
 	char *wmfw_file_name;
@@ -113,6 +133,10 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w,
 int wm_adsp2_early_event(struct snd_soc_dapm_widget *w,
 			 struct snd_kcontrol *kcontrol, int event,
 			 unsigned int freq);
+
+int wm_adsp2_lock(struct wm_adsp *adsp, unsigned int regions);
+irqreturn_t wm_adsp2_bus_error(struct wm_adsp *adsp);
+
 int wm_adsp2_event(struct snd_soc_dapm_widget *w,
 		   struct snd_kcontrol *kcontrol, int event);