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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) 2011 The ChromiumOS Authors. All rights reserved.
*
* 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/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <device/mmio.h>
#include <delay.h>
#include <device/azalia_device.h>
#include "pch.h"
#include "hda_verb.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 azalia_pch_init(struct device *dev, u8 *base)
{
u8 reg8;
u16 reg16;
u32 reg32;
if (RCBA32(0x2030) & (1UL << 31)) {
reg32 = pci_read_config32(dev, 0x120);
reg32 &= 0xf8ffff01;
reg32 |= (1 << 25);
reg32 |= RCBA32(0x2030) & 0xfe;
pci_write_config32(dev, 0x120, reg32);
if (!pch_is_lp()) {
reg16 = pci_read_config16(dev, 0x78);
reg16 &= ~(1 << 11);
pci_write_config16(dev, 0x78, reg16);
}
} else
printk(BIOS_DEBUG, "Azalia: 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);
if (pch_is_lp())
reg32 &= ~(1UL << 31);
else
reg32 |= (1UL << 31);
pci_write_config32(dev, 0x120, reg32);
}
reg8 = pci_read_config8(dev, 0x43);
if (pch_is_lp())
reg8 &= ~(1 << 6);
else
reg8 |= (1 << 4);
pci_write_config8(dev, 0x43, reg8);
if (!pch_is_lp()) {
reg32 = pci_read_config32(dev, 0xc0);
reg32 |= (1 << 17);
pci_write_config32(dev, 0xc0, reg32);
}
/* Additional programming steps */
reg32 = pci_read_config32(dev, 0xc4);
if (pch_is_lp())
reg32 |= (1 << 24);
else
reg32 |= (1 << 14);
pci_write_config32(dev, 0xc4, reg32);
if (!pch_is_lp()) {
reg32 = pci_read_config32(dev, 0xd0);
reg32 &= ~(1UL << 31);
pci_write_config32(dev, 0xd0, reg32);
}
reg8 = pci_read_config8(dev, 0x40); // Audio Control
reg8 |= 1; // Select Azalia 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);
if (pch_is_lp()) {
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 azalia_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, "Azalia: base = %p\n", base);
/* Set Bus Master */
reg32 = pci_read_config32(dev, PCI_COMMAND);
pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER);
azalia_pch_init(dev, base);
codec_mask = hda_codec_detect(base);
if (codec_mask) {
printk(BIOS_DEBUG, "Azalia: codec_mask = %02x\n", codec_mask);
codecs_init(base, codec_mask);
}
}
static void azalia_set_subsystem(struct device *dev, unsigned int vendor,
unsigned int device)
{
if (!vendor || !device) {
pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
pci_read_config32(dev, PCI_VENDOR_ID));
} else {
pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
}
static struct pci_operations azalia_pci_ops = {
.set_subsystem = azalia_set_subsystem,
};
static struct device_operations azalia_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = azalia_init,
.scan_bus = 0,
.ops_pci = &azalia_pci_ops,
};
static const unsigned short pci_device_ids[] = { 0x8c20, 0x9c20, 0 };
static const struct pci_driver pch_azalia __pci_driver = {
.ops = &azalia_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
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