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Diffstat (limited to 'src/soc/intel/broadwell/hda.c')
| -rw-r--r-- | src/soc/intel/broadwell/hda.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/hda.c b/src/soc/intel/broadwell/hda.c new file mode 100644 index 0000000000..9a9225b479 --- /dev/null +++ b/src/soc/intel/broadwell/hda.c @@ -0,0 +1,155 @@ +/* + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include <arch/io.h> +#include <delay.h> +#include <soc/intel/common/hda_verb.h> +#include <broadwell/ramstage.h> +#include <broadwell/rcba.h> + +const u32 * cim_verb_data = NULL; +u32 cim_verb_data_size = 0; +const u32 * pc_beep_verbs = NULL; +u32 pc_beep_verbs_size = 0; + +static void codecs_init(u32 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 && pc_beep_verbs) + hda_codec_write(base, pc_beep_verbs_size, pc_beep_verbs); +} + +static void hda_pch_init(struct device *dev, u32 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); + } + + reg8 = pci_read_config8(dev, 0x43); + reg8 &= ~(1 << 6); + pci_write_config8(dev, 0x43, reg8); + + /* 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) +{ + u32 base; + struct resource *res; + u32 codec_mask; + u32 reg32; + + /* Find base address */ + res = find_resource(dev, PCI_BASE_ADDRESS_0); + if (!res) + return; + + base = (u32)res->base; + printk(BIOS_DEBUG, "HDA: base = %08x\n", (u32)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 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, + .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, +}; |