/* 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, };