azalia.c

Go to the documentation of this file.

/* 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 "pch.h"
#include "hda_verb.h"
 
static void azalia_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);
 
                if (!pch_is_lp()) {
                        pci_and_config16(dev, 0x78, ~(1 << 11));
                }
        } 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 &= ~(1 << 31);
                else
                        reg32 |= (1 << 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())
                pci_or_config32(dev, 0xc0, 1 << 17);
 
        /* 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())
                pci_and_config32(dev, 0xd0, ~(1 << 31));
 
        // Docking not supported
        pci_and_config8(dev, 0x4d, (u8)~(1 << 7)); // Docking Status
 
        if (pch_is_lp()) {
                reg16 = read32(base + 0x0012);
                reg16 |= (1 << 0);
                write32(base + 0x0012, reg16);
 
                /* disable Auto Voltage Detector */
                pci_or_config8(dev, 0x42, 1 << 2);
        }
}
 
static void azalia_init(struct device *dev)
{
        u8 *base;
        struct resource *res;
        u32 codec_mask;
 
        /* Find base address */
        res = probe_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 */
        pci_or_config16(dev, PCI_COMMAND, 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);
                azalia_codecs_init(base, codec_mask);
        }
}
 
static void azalia_final(struct device *dev)
{
        /* Set HDCFG.BCLD */
        pci_or_config16(dev, 0x40, 1 << 1);
}
 
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,
        .final                  = azalia_final,
        .ops_pci                = &pci_dev_ops_pci,
};
 
static const unsigned short pci_device_ids[] = {
        PCI_DID_INTEL_LPT_H_AUDIO,
        PCI_DID_INTEL_LPT_LP_AUDIO,
        0
};
 
static const struct pci_driver pch_azalia __pci_driver = {
        .ops     = &azalia_ops,
        .vendor  = PCI_VID_INTEL,
        .devices = pci_device_ids,
};