soc/intel/common: Add Intel HDA common block driver

There is common HDA code in soc/intel/common that provides generic
HDA support functions, but it does not provide a driver.

This change adds a common block driver for HDA that provides a
ramstage driver for SOCs that need to initialize an HDA codec.

This was tested on a board with an HDA codec to ensure that it
properly detected it and ran the codec init steps.

Change-Id: I41b4c54d3c81e1f09810cfaf934ffacafca1cf38
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/23187
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

3 files changed, 85 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/hda/Kconfig b/src/soc/intel/common/block/hda/Kconfig
new file mode 100644
index 0000000000..ca415bc974
--- /dev/null
+++ b/src/soc/intel/common/block/hda/Kconfig
@@ -0,0 +1,4 @@
+config SOC_INTEL_COMMON_BLOCK_HDA
+	bool
+	help
+	  Intel Processor common High Definition Audio driver support
diff --git a/src/soc/intel/common/block/hda/Makefile.inc b/src/soc/intel/common/block/hda/Makefile.inc
new file mode 100644
index 0000000000..410389c423
--- /dev/null
+++ b/src/soc/intel/common/block/hda/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_HDA) += hda.c
diff --git a/src/soc/intel/common/block/hda/hda.c b/src/soc/intel/common/block/hda/hda.c
new file mode 100644
index 0000000000..3f87fccf7f
--- /dev/null
+++ b/src/soc/intel/common/block/hda/hda.c
@@ -0,0 +1,80 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/azalia_device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <soc/intel/common/hda_verb.h>
+#include <soc/ramstage.h>
+
+static void codecs_init(uint8_t *base, u32 codec_mask)
+{
+	int i;
+
+	/* Can support up to 4 codecs */
+	for (i = 3; i >= 0; i--) {
+		if (codec_mask & (1 << i))
+			hda_codec_init(base, i,
+				       cim_verb_data_size, cim_verb_data);
+	}
+
+	if (pc_beep_verbs_size)
+		hda_codec_write(base, pc_beep_verbs_size, pc_beep_verbs);
+}
+
+static void hda_init(struct device *dev)
+{
+	struct resource *res;
+	int codec_mask;
+	uint8_t *base;
+
+	res = find_resource(dev, PCI_BASE_ADDRESS_0);
+	if (!res)
+		return;
+
+	base = res2mmio(res, 0, 0);
+	if (!base)
+		return;
+
+	codec_mask = hda_codec_detect(base);
+	if (codec_mask) {
+		printk(BIOS_INFO, "HDA: codec_mask = %02x\n", codec_mask);
+		codecs_init(base, codec_mask);
+	}
+}
+
+static struct device_operations hda_ops = {
+	.read_resources		= &pci_dev_read_resources,
+	.set_resources		= &pci_dev_set_resources,
+	.enable_resources	= &pci_dev_enable_resources,
+	.init			= &hda_init,
+	.ops_pci		= &pci_dev_ops_pci,
+};
+
+static const unsigned short pci_device_ids[] = {
+	PCI_DEVICE_ID_INTEL_SKL_AUDIO,
+	PCI_DEVICE_ID_INTEL_KBL_AUDIO,
+	PCI_DEVICE_ID_INTEL_CNL_AUDIO,
+	0
+};
+
+static const struct pci_driver pch_hda __pci_driver = {
+	.ops		= &hda_ops,
+	.vendor		= PCI_VENDOR_ID_INTEL,
+	.devices	= pci_device_ids,
+};