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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2014 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#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 <arch/io.h>
#include <delay.h>
#include <soc/intel/common/hda_verb.h>
#include <soc/pch.h>
#include <soc/ramstage.h>
#include <soc/rcba.h>
static void codecs_init(u8 *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_pch_init(struct device *dev, u8 *base)
{
u8 reg8;
u16 reg16;
u32 reg32;
if (RCBA32(0x2030) & (1 << 31)) {
reg32 = pci_read_config32(dev, 0x120);
reg32 &= 0xf8ffff01;
reg32 |= (1 << 25);
reg32 |= RCBA32(0x2030) & 0xfe;
pci_write_config32(dev, 0x120, reg32);
} else
printk(BIOS_DEBUG, "HDA: V1CTL disabled.\n");
reg32 = pci_read_config32(dev, 0x114);
reg32 &= ~0xfe;
pci_write_config32(dev, 0x114, reg32);
// Set VCi enable bit
if (pci_read_config32(dev, 0x120) & ((1 << 24) |
(1 << 25) | (1 << 26))) {
reg32 = pci_read_config32(dev, 0x120);
reg32 &= ~(1 << 31);
pci_write_config32(dev, 0x120, reg32);
}
/* Additional programming steps */
reg32 = pci_read_config32(dev, 0xc4);
reg32 |= (1 << 24);
pci_write_config32(dev, 0xc4, reg32);
reg8 = pci_read_config8(dev, 0x40); // Audio Control
reg8 |= 1; // Select HDA mode
pci_write_config8(dev, 0x40, reg8);
reg8 = pci_read_config8(dev, 0x4d); // Docking Status
reg8 &= ~(1 << 7); // Docking not supported
pci_write_config8(dev, 0x4d, reg8);
reg16 = read32(base + 0x0012);
reg16 |= (1 << 0);
write32(base + 0x0012, reg16);
/* disable Auto Voltage Detector */
reg8 = pci_read_config8(dev, 0x42);
reg8 |= (1 << 2);
pci_write_config8(dev, 0x42, reg8);
}
static void hda_init(struct device *dev)
{
u8 *base;
struct resource *res;
u32 codec_mask;
u32 reg32;
/* Find base address */
res = find_resource(dev, PCI_BASE_ADDRESS_0);
if (!res)
return;
base = res2mmio(res, 0, 0);
printk(BIOS_DEBUG, "HDA: base = %p\n", base);
/* Set Bus Master */
reg32 = pci_read_config32(dev, PCI_COMMAND);
pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER);
hda_pch_init(dev, base);
codec_mask = hda_codec_detect(base);
if (codec_mask) {
printk(BIOS_DEBUG, "HDA: codec_mask = %02x\n", codec_mask);
codecs_init(base, codec_mask);
}
}
static void hda_enable(struct device *dev)
{
u32 reg32;
u8 reg8;
reg8 = pci_read_config8(dev, 0x43);
reg8 |= 0x6f;
pci_write_config8(dev, 0x43, reg8);
if (!dev->enabled) {
/* Route I/O buffers to ADSP function */
reg8 = pci_read_config8(dev, 0x42);
reg8 |= (1 << 7) | (1 << 6);
pci_write_config8(dev, 0x42, reg8);
printk(BIOS_INFO, "HDA disabled, I/O buffers routed to ADSP\n");
/* Ensure memory, io, and bus master are all disabled */
reg32 = pci_read_config32(dev, PCI_COMMAND);
reg32 &= ~(PCI_COMMAND_MASTER |
PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
pci_write_config32(dev, PCI_COMMAND, reg32);
/* Disable this device */
pch_disable_devfn(dev);
}
}
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,
.enable = &hda_enable,
.ops_pci = &broadwell_pci_ops,
};
static const unsigned short pci_device_ids[] = {
0x9c20, /* LynxPoint-LP */
0x9ca0, /* WildcatPoint */
0
};
static const struct pci_driver pch_hda __pci_driver = {
.ops = &hda_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
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