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/* SPDX-License-Identifier: GPL-2.0-only */
#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 <device/azalia_device.h>
#include "chip.h"
#include "i82801jx.h"
static int codec_detect(u8 *base)
{
u32 reg32;
if (azalia_enter_reset(base) < 0)
goto no_codec;
if (azalia_exit_reset(base) < 0)
goto no_codec;
/* Read in Codec location (BAR + 0xe)[2..0] */
reg32 = read32(base + HDA_STATESTS_REG);
reg32 &= 0x0f;
if (!reg32)
goto no_codec;
return reg32;
no_codec:
/* Codec not found, put HDA back in reset */
azalia_enter_reset(base);
printk(BIOS_DEBUG, "Azalia: No codec!\n");
return 0;
}
static void azalia_init(struct device *dev)
{
u8 *base;
struct resource *res;
u32 codec_mask;
// ESD
pci_update_config32(dev, 0x134, ~0x00ff0000, 2 << 16);
// Link1 description
pci_update_config32(dev, 0x140, ~0x00ff0000, 2 << 16);
// Port VC0 Resource Control Register
pci_update_config32(dev, 0x114, ~0x000000ff, 1);
// VCi traffic class
pci_or_config8(dev, 0x44, 7 << 0); // TC7
// VCi Resource Control
pci_or_config32(dev, 0x120, (1 << 31) | (1 << 24) | (0x80 << 0)); /* VCi ID and map */
/* Set Bus Master */
pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER);
// Docking not supported
pci_and_config8(dev, 0x4d, (u8)~(1 << 7)); // Docking Status
/* Lock some R/WO bits by writing their current value. */
pci_update_config32(dev, 0x74, ~0, 0);
res = probe_resource(dev, PCI_BASE_ADDRESS_0);
if (!res)
return;
// NOTE this will break as soon as the Azalia gets a bar above 4G.
// Is there anything we can do about it?
base = res2mmio(res, 0, 0);
printk(BIOS_DEBUG, "Azalia: base = %p\n", base);
codec_mask = codec_detect(base);
if (codec_mask) {
printk(BIOS_DEBUG, "Azalia: codec_mask = %02x\n", codec_mask);
azalia_codecs_init(base, codec_mask);
}
}
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,
.ops_pci = &pci_dev_ops_pci,
};
static const unsigned short pci_device_ids[] = {
0x3a3e,
0x3a6e,
0
};
static const struct pci_driver i82801jx_azalia __pci_driver = {
.ops = &azalia_ops,
.vendor = PCI_VID_INTEL,
.devices = pci_device_ids,
};
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