[coreboot-gerrit] Change in coreboot[master]: soc/intel/common/dsp: Add function to enable `PME` for Audio Controller

[Subrata Banik (Code Review)]

Attention is currently required from: Patrick Rudolph.
Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/61530 )

Change subject: soc/intel/common/dsp: Add function to enable `PME` for Audio Controller
......................................................................

soc/intel/common/dsp: Add function to enable `PME` for Audio Controller

This function implements an API that sets PME for audio controller.

BUG=none
TEST=none

Signed-off-by: Subrata Banik 
Change-Id: I76125b60cb128fd927b4c1205db6cc8964371b47
---
M src/soc/intel/common/block/dsp/dsp.c
A src/soc/intel/common/block/include/intelblocks/dsp.h
2 files changed, 26 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/61530/1

diff --git a/src/soc/intel/common/block/dsp/dsp.c b/src/soc/intel/common/block/dsp/dsp.c
index dd272a3..10fc949 100644
--- a/src/soc/intel/common/block/dsp/dsp.c
+++ b/src/soc/intel/common/block/dsp/dsp.c
@@ -3,6 +3,18 @@
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
+#include <intelblocks/dsp.h>
+#include <soc/pci_devs.h>
+
+void dsp_pme_enable(void)
+{
+	if (!is_dev_enabled(PCH_DEV_HDA))
+		return;
+
+	uint32_t data = pci_read_config32(PCH_DEV_HDA, PCS);
+	data |= PME_ENABLE;
+	pci_write_config32(PCH_DEV_HDA, PCS, data);
+}

static struct device_operations dsp_dev_ops = {
    .read_resources         = pci_dev_read_resources,
diff --git a/src/soc/intel/common/block/include/intelblocks/dsp.h b/src/soc/intel/common/block/include/intelblocks/dsp.h
new file mode 100644
index 0000000..2a3156a
--- /dev/null
+++ b/src/soc/intel/common/block/include/intelblocks/dsp.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SOC_INTEL_COMMON_BLOCK_DSP_H
+#define SOC_INTEL_COMMON_BLOCK_DSP_H
+
+#include <types.h>
+
+#define PCS			0x54
+#define  PME_ENABLE	BIT(8)
+
+/* Function sets PME for Audio controller */
+void dsp_pme_enable(void);
+
+#endif	/* SOC_INTEL_COMMON_BLOCK_DSP_H */