ivybridge_sound.c
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// SPDX-License-Identifier: GPL-2.0
/*
* Intel HDA audio (Azalia) for ivybridge
*
* Originally from coreboot file bd82x6x/azalia.c
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2011 The ChromiumOS Authors.
* Copyright 2018 Google LLC
*/
#define LOG_CATEGORY UCLASS_SOUND
#include <common.h>
#include <dm.h>
#include <hda_codec.h>
#include <pch.h>
#include <sound.h>
static int bd82x6x_azalia_probe(struct udevice *dev)
{
struct pci_child_platdata *plat;
struct hda_codec_priv *priv;
struct udevice *pch;
u32 codec_mask;
int conf;
int ret;
/* Only init after relocation */
if (!(gd->flags & GD_FLG_RELOC))
return 0;
ret = hda_codec_init(dev);
if (ret) {
log_debug("Cannot set up HDA codec (err=%d)\n", ret);
return ret;
}
priv = dev_get_priv(dev);
ret = uclass_first_device_err(UCLASS_PCH, &pch);
log_debug("PCH %p %s\n", pch, pch->name);
if (ret)
return ret;
conf = pch_ioctl(pch, PCH_REQ_HDA_CONFIG, NULL, 0);
log_debug("conf = %x\n", conf);
if (conf >= 0) {
dm_pci_clrset_config32(dev, 0x120, 7 << 24 | 0xfe,
1 << 24 | /* 2 << 24 for server */
conf);
dm_pci_clrset_config16(dev, 0x78, 0, 1 << 1);
} else {
log_debug("V1CTL disabled\n");
}
dm_pci_clrset_config32(dev, 0x114, 0xfe, 0);
/* Set VCi enable bit */
dm_pci_clrset_config32(dev, 0x120, 0, 1U << 31);
/* Enable HDMI codec */
dm_pci_clrset_config32(dev, 0xc4, 0, 1 << 1);
dm_pci_clrset_config8(dev, 0x43, 0, 1 << 6);
/* Additional programming steps */
dm_pci_clrset_config32(dev, 0xc4, 0, 1 << 13);
dm_pci_clrset_config32(dev, 0xc4, 0, 1 << 10);
dm_pci_clrset_config32(dev, 0xd0, 1U << 31, 0);
/* Additional step on Panther Point */
plat = dev_get_parent_platdata(dev);
if (plat->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_HDA)
dm_pci_clrset_config32(dev, 0xc4, 0, 1 << 17);
dm_pci_write_config8(dev, 0x3c, 0xa); /* unused? */
/* Audio Control: Select Azalia mode */
dm_pci_clrset_config8(dev, 0x40, 0, 1);
dm_pci_clrset_config8(dev, 0x4d, 1 << 7, 0); /* Docking not supported */
codec_mask = hda_codec_detect(priv->regs);
log_debug("codec_mask = %02x\n", codec_mask);
if (codec_mask) {
ret = hda_codecs_init(dev, priv->regs, codec_mask);
if (ret) {
log_err("Codec init failed (err=%d)\n", ret);
return ret;
}
}
/* Enable dynamic clock gating */
dm_pci_clrset_config8(dev, 0x43, 7, BIT(2) | BIT(0));
ret = hda_codec_finish_init(dev);
if (ret) {
log_debug("Cannot set up HDA codec (err=%d)\n", ret);
return ret;
}
return 0;
}
static int bd82x6x_azalia_setup(struct udevice *dev)
{
return 0;
}
int bd82x6x_azalia_start_beep(struct udevice *dev, int frequency_hz)
{
return hda_codec_start_beep(dev, frequency_hz);
}
int bd82x6x_azalia_stop_beep(struct udevice *dev)
{
return hda_codec_stop_beep(dev);
}
static const struct sound_ops bd82x6x_azalia_ops = {
.setup = bd82x6x_azalia_setup,
.start_beep = bd82x6x_azalia_start_beep,
.stop_beep = bd82x6x_azalia_stop_beep,
};
static const struct udevice_id bd82x6x_azalia_ids[] = {
{ .compatible = "intel,hd-audio" },
{ }
};
U_BOOT_DRIVER(bd82x6x_azalia_drv) = {
.name = "bd82x6x-hda",
.id = UCLASS_SOUND,
.of_match = bd82x6x_azalia_ids,
.probe = bd82x6x_azalia_probe,
.ops = &bd82x6x_azalia_ops,
.priv_auto_alloc_size = sizeof(struct hda_codec_priv),
};