| /* |
| * 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. |
| */ |
| |
| #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 <device/mmio.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, |
| }; |