diff options
Diffstat (limited to 'src/soc/intel/sch/audio.c')
-rw-r--r-- | src/soc/intel/sch/audio.c | 312 |
1 files changed, 0 insertions, 312 deletions
diff --git a/src/soc/intel/sch/audio.c b/src/soc/intel/sch/audio.c deleted file mode 100644 index 765d8de2a4..0000000000 --- a/src/soc/intel/sch/audio.c +++ /dev/null @@ -1,312 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2008 Advanced Micro Devices, Inc. - * Copyright (C) 2008-2009 coresystems GmbH - * - * 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 <arch/io.h> -#include <delay.h> - -#define HDA_ICII_REG 0x68 -#define HDA_ICII_BUSY (1 << 0) -#define HDA_ICII_VALID (1 << 1) - -typedef struct southbridge_intel_sch_config config_t; - -static int set_bits(void *port, u32 mask, u32 val) -{ - u32 reg32; - int count; - - /* Write (val & mask) to port */ - val &= mask; - reg32 = read32(port); - reg32 &= ~mask; - reg32 |= val; - write32(port, reg32); - - /* Wait for readback of register to - * match what was just written to it - */ - count = 50; - do { - /* Wait 1ms based on BKDG wait time */ - mdelay(1); - reg32 = read32(port); - reg32 &= mask; - } while ((reg32 != val) && --count); - - /* Timeout occurred */ - if (!count) - return -1; - return 0; -} - -static int codec_detect(u8 *base) -{ - u32 reg32; - int count; - - /* Set Bit 0 to 1 to exit reset state (BAR + 0x8)[0] */ - if (set_bits(base + 0x08, 1, 1) == -1) - goto no_codec; - - /* clear STATESTS bits (BAR + 0xE)[2:0] */ - reg32 = read32(base + 0x0E); - reg32 |= 7; - write32(base + 0x0E, reg32); - - /* Wait for readback of register to - * match what was just written to it - */ - count = 50; - do { - /* Wait 1ms based on BKDG wait time */ - mdelay(1); - reg32 = read32(base + 0x0E); - } while ((reg32 != 0) && --count); - /* Timeout occurred */ - if (!count) - goto no_codec; - - /* Set Bit0 to 0 to enter reset state (BAR + 0x8)[0] */ - if (set_bits(base + 0x08, 1, 0) == -1) - goto no_codec; - - /* Set Bit 0 to 1 to exit reset state (BAR + 0x8)[0] */ - if (set_bits(base + 0x08, 1, 1) == -1) - goto no_codec; - - /* Read in Codec location (BAR + 0xe)[2..0] */ - reg32 = read32(base + 0xe); - reg32 &= 0x0f; - if (!reg32) - goto no_codec; - - return reg32; - -no_codec: - /* Codec Not found */ - /* Put HDA back in reset (BAR + 0x8) [0] */ - set_bits(base + 0x08, 1, 0); - printk(BIOS_DEBUG, "sch_audio: No codec!\n"); - return 0; -} - -static u32 find_verb(struct device *dev, u32 viddid, const u32 ** verb) -{ - printk(BIOS_DEBUG, "sch_audio: dev=%s\n", dev_path(dev)); - printk(BIOS_DEBUG, "sch_audio: Reading viddid=%x\n", viddid); - - int idx = 0; - - while (idx < (cim_verb_data_size / sizeof(u32))) { - u32 verb_size = 4 * cim_verb_data[idx + 2]; // in u32 - verb_size++; // we ship an additional gain value - if (cim_verb_data[idx] != viddid) { - idx += verb_size + 3; // skip verb + header - continue; - } - *verb = &cim_verb_data[idx + 3]; - return verb_size; - } - - /* Not all codecs need to load another verb */ - 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 50 usec timeout - the Linux kernel uses the - * same duration */ - - int timeout = 50; - - 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) -{ - /* Use a 50 usec timeout - the Linux kernel uses the - * same duration */ - - int timeout = 25; - - write32(base + 0x68, 1); - while (timeout--) { - udelay(1); - } - timeout = 50; - while (timeout--) { - u32 reg32 = read32(base + 0x68); - if ((reg32 & ((1 << 1) | (1 << 0))) == (1 << 1)) { - - write32(base + 0x68, 2); - 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, "sch_audio: Initializing codec #%d\n", addr); - - /* 1 */ - if (wait_for_ready(base) == -1) - return; - - reg32 = (addr << 28) | 0x000f0000; - write32(base + 0x60, reg32); - - if (wait_for_valid(base) == -1) - return; - - reg32 = read32(base + 0x0); - printk(BIOS_DEBUG, "sch_audio: GCAP: %08x\n", reg32); - - reg32 = read32(base + 0x4); - printk(BIOS_DEBUG, "sch_audio: OUTPAY: %08x\n", reg32); - reg32 = read32(base + 0x6); - printk(BIOS_DEBUG, "sch_audio: INPAY: %08x\n", reg32); - - reg32 = read32(base + 0x64); - - /* 2 */ - printk(BIOS_DEBUG, "sch_audio: codec viddid: %08x\n", reg32); - verb_size = find_verb(dev, reg32, &verb); - - if (!verb_size) { - printk(BIOS_DEBUG, "sch_audio: No verb!\n"); - return; - } - printk(BIOS_DEBUG, "sch_audio: verb_size: %d\n", verb_size); - - /* 3 */ - for (i = 0; i < verb_size; i++) { - if (wait_for_ready(base) == -1) - return; - - write32(base + 0x60, verb[i]); - - if (wait_for_valid(base) == -1) - return; - } - printk(BIOS_DEBUG, "sch_audio: verb loaded.\n"); -} - -static void codecs_init(struct device *dev, u8 *base, u32 codec_mask) -{ - int i; - - for (i = 2; i >= 0; i--) { - if (codec_mask & (1 << i)) - codec_init(dev, base, i); - } -} - -static void sch_audio_init(struct device *dev) -{ - u8 *base; - struct resource *res; - u32 codec_mask; - u32 reg32; - - res = find_resource(dev, 0x10); - if (!res) - return; - - reg32 = pci_read_config32(dev, PCI_COMMAND); - pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MEMORY); - - // NOTE this will break as soon as the sch_audio get's a bar above - // 4G. Is there anything we can do about it? - base = res2mmio(res, 0, 0); - printk(BIOS_DEBUG, "sch_audio: base = %px\n", base); - codec_mask = codec_detect(base); - - if (codec_mask) { - printk(BIOS_DEBUG, "sch_audio: codec_mask = %02x\n", - codec_mask); - codecs_init(dev, base, codec_mask); - } else { - /* No audio codecs found disable HD audio controller */ - pci_write_config32(dev, 0x10, 0); - pci_write_config32(dev, PCI_COMMAND, 0); - reg32 = pci_read_config32(dev, 0xFC); - pci_write_config32(dev, 0xFC, reg32 | 1); - } -} - -static void sch_audio_set_subsystem(device_t dev, unsigned vendor, - unsigned device) -{ - if (!vendor || !device) { - pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, - pci_read_config32(dev, PCI_VENDOR_ID)); - } else { - pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, - ((device & 0xffff) << 16) | (vendor & 0xffff)); - } -} - -static struct pci_operations sch_audio_pci_ops = { - .set_subsystem = sch_audio_set_subsystem, -}; - -static struct device_operations sch_audio_ops = { - .read_resources = pci_dev_read_resources, - .set_resources = pci_dev_set_resources, - .enable_resources = pci_dev_enable_resources, - .init = sch_audio_init, - .scan_bus = 0, - .ops_pci = &sch_audio_pci_ops, -}; - -/* SCH audio function */ -static const struct pci_driver sch_audio __pci_driver = { - .ops = &sch_audio_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .device = 0x811B, -}; |