| /* 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 <delay.h> |
| #include <device/azalia_device.h> |
| #include "pch.h" |
| |
| static int codec_detect(u8 *base) |
| { |
| u8 reg8; |
| |
| if (azalia_exit_reset(base) < 0) |
| goto no_codec; |
| |
| /* Write back the value once reset bit is set. */ |
| write16(base + HDA_GCAP_REG, read16(base + HDA_GCAP_REG)); |
| |
| /* Read in Codec location (BAR + 0xe)[2..0] */ |
| reg8 = read8(base + HDA_STATESTS_REG); |
| reg8 &= 0x0f; |
| if (!reg8) |
| goto no_codec; |
| |
| return reg8; |
| |
| no_codec: |
| /* Codec not found, put HDA back in reset */ |
| azalia_enter_reset(base); |
| printk(BIOS_DEBUG, "Azalia: No codec!\n"); |
| return 0; |
| } |
| |
| /* |
| * Wait 50usec for the codec to indicate it is ready. |
| * No response would imply that the codec is non-operative. |
| */ |
| |
| static int wait_for_ready(u8 *base) |
| { |
| /* Use a 1msec timeout */ |
| int timeout = 1000; |
| |
| while (timeout--) { |
| u32 reg32 = read32(base + HDA_ICII_REG); |
| if (!(reg32 & HDA_ICII_BUSY)) |
| return 0; |
| udelay(1); |
| } |
| |
| return -1; |
| } |
| |
| /* |
| * Wait 50usec for the codec to indicate that it accepted the previous command. |
| * No response would imply that the code is non-operative. |
| */ |
| |
| static int wait_for_valid(u8 *base) |
| { |
| u32 reg32; |
| /* Use a 1msec timeout */ |
| int timeout = 1000; |
| |
| /* Send the verb to the codec */ |
| reg32 = read32(base + HDA_ICII_REG); |
| reg32 |= HDA_ICII_BUSY | HDA_ICII_VALID; |
| write32(base + HDA_ICII_REG, reg32); |
| |
| while (timeout--) { |
| reg32 = read32(base + HDA_ICII_REG); |
| if ((reg32 & (HDA_ICII_VALID | HDA_ICII_BUSY)) == HDA_ICII_VALID) |
| return 0; |
| udelay(1); |
| } |
| |
| return -1; |
| } |
| |
| static void codec_init(struct device *dev, u8 *base, int addr) |
| { |
| u32 reg32; |
| const u32 *verb; |
| u32 verb_size; |
| int i; |
| |
| printk(BIOS_DEBUG, "Azalia: Initializing codec #%d\n", addr); |
| |
| /* 1 */ |
| if (wait_for_ready(base) < 0) { |
| printk(BIOS_DEBUG, " codec not ready.\n"); |
| return; |
| } |
| |
| reg32 = (addr << 28) | 0x000f0000; |
| write32(base + HDA_IC_REG, reg32); |
| |
| if (wait_for_valid(base) < 0) { |
| printk(BIOS_DEBUG, " codec not valid.\n"); |
| return; |
| } |
| |
| /* 2 */ |
| reg32 = read32(base + HDA_IR_REG); |
| printk(BIOS_DEBUG, "Azalia: codec viddid: %08x\n", reg32); |
| verb_size = azalia_find_verb(cim_verb_data, cim_verb_data_size, reg32, &verb); |
| |
| if (!verb_size) { |
| printk(BIOS_DEBUG, "Azalia: No verb!\n"); |
| return; |
| } |
| printk(BIOS_DEBUG, "Azalia: verb_size: %d\n", verb_size); |
| |
| /* 3 */ |
| for (i = 0; i < verb_size; i++) { |
| if (wait_for_ready(base) < 0) |
| return; |
| |
| write32(base + HDA_IC_REG, verb[i]); |
| |
| if (wait_for_valid(base) < 0) |
| return; |
| } |
| printk(BIOS_DEBUG, "Azalia: verb loaded.\n"); |
| } |
| |
| static void codecs_init(struct device *dev, u8 *base, u32 codec_mask) |
| { |
| int i; |
| |
| for (i = 3; i >= 0; i--) { |
| if (codec_mask & (1 << i)) |
| codec_init(dev, base, i); |
| } |
| |
| for (i = 0; i < pc_beep_verbs_size; i++) { |
| if (wait_for_ready(base) < 0) |
| return; |
| |
| write32(base + HDA_IC_REG, pc_beep_verbs[i]); |
| |
| if (wait_for_valid(base) < 0) |
| return; |
| } |
| } |
| |
| static void azalia_init(struct device *dev) |
| { |
| u8 *base; |
| struct resource *res; |
| u32 codec_mask; |
| u8 reg8; |
| u16 reg16; |
| u32 reg32; |
| |
| /* Find base address */ |
| res = find_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); |
| |
| if (RCBA32(0x2030) & (1 << 31)) { |
| reg32 = pci_read_config32(dev, 0x120); |
| reg32 &= 0xf8ffff01; |
| reg32 |= (1 << 24); // 2 << 24 for server |
| reg32 |= RCBA32(0x2030) & 0xfe; |
| pci_write_config32(dev, 0x120, reg32); |
| |
| reg16 = pci_read_config16(dev, 0x78); |
| reg16 |= (1 << 11); |
| pci_write_config16(dev, 0x78, reg16); |
| } 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 |
| reg32 = pci_read_config32(dev, 0x120); |
| reg32 |= (1 << 31); |
| pci_write_config32(dev, 0x120, reg32); |
| |
| // Enable HDMI codec: |
| reg32 = pci_read_config32(dev, 0xc4); |
| reg32 |= (1 << 1); |
| pci_write_config32(dev, 0xc4, reg32); |
| |
| reg8 = pci_read_config8(dev, 0x43); |
| reg8 |= (1 << 6); |
| pci_write_config8(dev, 0x43, reg8); |
| |
| reg32 = pci_read_config32(dev, 0xd0); |
| reg32 &= ~(1 << 31); |
| pci_write_config32(dev, 0xd0, reg32); |
| |
| /* Set Bus Master */ |
| pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER); |
| |
| pci_write_config8(dev, 0x3c, 0x0a); // unused? |
| |
| /* Codec Initialization Programming Sequence */ |
| |
| /* Take controller out of reset */ |
| reg32 = read32(base + HDA_GCTL_REG); |
| reg32 |= HDA_GCTL_CRST; |
| write32(base + HDA_GCTL_REG, reg32); |
| /* Wait 1ms */ |
| udelay(1000); |
| |
| // |
| reg8 = pci_read_config8(dev, 0x40); // Audio Control |
| reg8 |= 1; // Select Azalia mode. This needs to be controlled via devicetree.cb |
| 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); |
| |
| codec_mask = codec_detect(base); |
| |
| if (codec_mask) { |
| printk(BIOS_DEBUG, "Azalia: codec_mask = %02x\n", codec_mask); |
| codecs_init(dev, base, codec_mask); |
| } |
| |
| /* Enable dynamic clock gating */ |
| reg8 = pci_read_config8(dev, 0x43); |
| reg8 &= ~0x7; |
| reg8 |= (1 << 2) | (1 << 0); |
| pci_write_config8(dev, 0x43, reg8); |
| } |
| |
| 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[] = { |
| 0x1c20, |
| 0x1e20, |
| PCI_DID_INTEL_IBEXPEAK_AUDIO, |
| 0 |
| }; |
| |
| static const struct pci_driver pch_azalia __pci_driver = { |
| .ops = &azalia_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |