dma: intel_adsp_hda: Refactor power management and correct power domains

This patch addresses several issues with the Intel ADSP HDA DMA driver:

1. Refactors the HDA DMA power management initialization. The previous
   use of `pm_device_runtime_enable` was incorrect. The updated approach
   relies on enabling runtime power management through the device tree
   using the `zephyr,pm-device-runtime-auto` property. Additionally, the
   patch removes redundant device initialization steps as these are already
   handled by `pm_device_driver_init` when the device is under a power
   domain.

2. Corrects the power domain assignment for the HDA link. The HDA link
   was previously assigned to the io0 power domain based on a
   misinterpretation of the documentation. The correct power domain
   assignment is now based on updated documentation for LNL, ensuring that
   the HDA link is associated with the appropriate power domain.

These changes ensure that the HDA DMA driver properly manages power
states, reducing power consumption and improving system stability, while
ensuring the correct power domains are used.

Signed-off-by: Tomasz Leman <[email protected]>

Author: tmleman

drivers/dma/dma_intel_adsp_hda.c

@@ -383,6 +383,23 @@ static void intel_adsp_hda_channels_init(const struct device *dev)
 #endif
 }
 
+int intel_adsp_hda_dma_pm_action(const struct device *dev, enum pm_device_action action)
+{
+	switch (action) {
+	case PM_DEVICE_ACTION_RESUME:
+		intel_adsp_hda_channels_init(dev);
+		break;
+	case PM_DEVICE_ACTION_SUSPEND:
+	case PM_DEVICE_ACTION_TURN_ON:
+	case PM_DEVICE_ACTION_TURN_OFF:
+		break;
+	default:
+		return -ENOTSUP;
+	}
+
+	return 0;
+}
+
 int intel_adsp_hda_dma_init(const struct device *dev)
 {
 	struct intel_adsp_hda_dma_data *data = dev->data;
@@ -391,19 +408,7 @@ int intel_adsp_hda_dma_init(const struct device *dev)
 	data->ctx.dma_channels = cfg->dma_channels;
 	data->ctx.atomic = data->channels_atomic;
 	data->ctx.magic = DMA_MAGIC;
-#ifdef CONFIG_PM_DEVICE_RUNTIME
-	if (pm_device_on_power_domain(dev)) {
-		pm_device_init_off(dev);
-	} else {
-		intel_adsp_hda_channels_init(dev);
-		pm_device_init_suspended(dev);
-	}
-
-	return pm_device_runtime_enable(dev);
-#else
-	intel_adsp_hda_channels_init(dev);
-	return 0;
-#endif
+	return pm_device_driver_init(dev, intel_adsp_hda_dma_pm_action);
 }
 
 int intel_adsp_hda_dma_get_attribute(const struct device *dev, uint32_t type, uint32_t *value)
@@ -430,25 +435,6 @@ int intel_adsp_hda_dma_get_attribute(const struct device *dev, uint32_t type, ui
 	return 0;
 }
 
-#ifdef CONFIG_PM_DEVICE
-int intel_adsp_hda_dma_pm_action(const struct device *dev, enum pm_device_action action)
-{
-	switch (action) {
-	case PM_DEVICE_ACTION_RESUME:
-		intel_adsp_hda_channels_init(dev);
-		break;
-	case PM_DEVICE_ACTION_SUSPEND:
-	case PM_DEVICE_ACTION_TURN_ON:
-	case PM_DEVICE_ACTION_TURN_OFF:
-		break;
-	default:
-		return -ENOTSUP;
-	}
-
-	return 0;
-}
-#endif
-
 #define DEVICE_DT_GET_AND_COMMA(node_id) DEVICE_DT_GET(node_id),
 
 void intel_adsp_hda_dma_isr(void)

dts/xtensa/intel/intel_adsp_ace15_mtpm.dtsi

@@ -478,7 +478,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
-			power-domains = <&io0_domain>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};
 
@@ -490,7 +491,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
-			power-domains = <&io0_domain>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};
 
@@ -503,6 +505,7 @@
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
 			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <13 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";
@@ -517,6 +520,7 @@
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
 			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <12 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";

dts/xtensa/intel/intel_adsp_ace20_lnl.dtsi

@@ -383,6 +383,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
+			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <13 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";
@@ -396,6 +398,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
+			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <12 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";
@@ -417,6 +421,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};
 
@@ -428,6 +434,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <16>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};
 

dts/xtensa/intel/intel_adsp_ace30.dtsi

@@ -505,6 +505,7 @@
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
 			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <13 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";
@@ -519,6 +520,7 @@
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
 			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <12 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";
@@ -540,7 +542,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
-			power-domains = <&io0_domain>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};
 
@@ -552,7 +555,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
-			power-domains = <&io0_domain>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};
 

dts/xtensa/intel/intel_adsp_ace30_ptl.dtsi

@@ -510,6 +510,7 @@
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
 			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <13 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";
@@ -524,6 +525,7 @@
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
 			power-domains = <&hst_domain>;
+			zephyr,pm-device-runtime-auto;
 			interrupts = <12 0 0>;
 			interrupt-parent = <&ace_intc>;
 			status = "okay";
@@ -545,7 +547,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
-			power-domains = <&io0_domain>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};
 
@@ -557,7 +560,8 @@
 			dma-buf-addr-alignment = <128>;
 			dma-buf-size-alignment = <32>;
 			dma-copy-alignment = <32>;
-			power-domains = <&io0_domain>;
+			power-domains = <&hub_ulp_domain>;
+			zephyr,pm-device-runtime-auto;
 			status = "okay";
 		};