diff options
Diffstat (limited to 'src/southbridge/intel/i82801ix/azalia.c')
| -rw-r--r-- | src/southbridge/intel/i82801ix/azalia.c | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/src/southbridge/intel/i82801ix/azalia.c b/src/southbridge/intel/i82801ix/azalia.c index f0c00b674e..1d1405ea46 100644 --- a/src/southbridge/intel/i82801ix/azalia.c +++ b/src/southbridge/intel/i82801ix/azalia.c @@ -42,15 +42,15 @@ static int codec_detect(u8 *base) { u32 reg32; - /* Set Bit0 to 0 to enter reset state (BAR + 0x8)[0] */ + /* Set Bit 0 to 0 to enter reset state (BAR + 0x8)[0] */ if (set_bits(base + HDA_GCTL_REG, 1, 0) == -1) goto no_codec; /* Set Bit 0 to 1 to exit reset state (BAR + 0x8)[0] */ - if (set_bits(base + HDA_GCTL_REG, 1, 1) == -1) + if (set_bits(base + HDA_GCTL_REG, 1, HDA_GCTL_CRST) == -1) goto no_codec; - /* Read in Codec location (BAR + 0xe)[2..0]*/ + /* Read in Codec location (BAR + 0xe)[2..0] */ reg32 = read32(base + HDA_STATESTS_REG); reg32 &= 0x0f; if (!reg32) @@ -71,12 +71,12 @@ static u32 find_verb(struct device *dev, u32 viddid, const u32 **verb) int idx = 0; while (idx < (cim_verb_data_size / sizeof(u32))) { - u32 verb_size = 4 * cim_verb_data[idx+2]; // in u32 + u32 verb_size = 4 * cim_verb_data[idx + 2]; // in u32 if (cim_verb_data[idx] != viddid) { - idx += verb_size + 3; // skip verb + header + idx += verb_size + 3; // skip verb + header continue; } - *verb = &cim_verb_data[idx+3]; + *verb = &cim_verb_data[idx + 3]; return verb_size; } @@ -84,9 +84,9 @@ static u32 find_verb(struct device *dev, u32 viddid, const u32 **verb) return 0; } -/** - * Wait 50usec for the codec to indicate it is ready - * no response would imply that the codec is non-operative +/* + * 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) @@ -104,23 +104,22 @@ static int wait_for_ready(u8 *base) 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. +/* + * 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 50 usec timeout - the Linux kernel uses the same duration */ + int timeout = 50; /* 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); - /* Use a 50 usec timeout - the Linux kernel uses the same duration */ - - int timeout = 50; while (timeout--) { reg32 = read32(base + HDA_ICII_REG); if ((reg32 & (HDA_ICII_VALID | HDA_ICII_BUSY)) == HDA_ICII_VALID) @@ -141,18 +140,21 @@ static void codec_init(struct device *dev, u8 *base, int addr) printk(BIOS_DEBUG, "Azalia: Initializing codec #%d\n", addr); /* 1 */ - if (wait_for_ready(base) == -1) + if (wait_for_ready(base) == -1) { + printk(BIOS_DEBUG, " codec not ready.\n"); return; + } reg32 = (addr << 28) | 0x000f0000; write32(base + HDA_IC_REG, reg32); - if (wait_for_valid(base) == -1) + if (wait_for_valid(base) == -1) { + printk(BIOS_DEBUG, " codec not valid.\n"); return; - - reg32 = read32(base + HDA_IR_REG); + } /* 2 */ + reg32 = read32(base + HDA_IR_REG); printk(BIOS_DEBUG, "Azalia: codec viddid: %08x\n", reg32); verb_size = find_verb(dev, reg32, &verb); @@ -178,6 +180,7 @@ static void codec_init(struct device *dev, u8 *base, int addr) 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); @@ -224,12 +227,12 @@ static void azalia_init(struct device *dev) /* Lock some R/WO bits by writing their current value. */ pci_update_config32(dev, 0x74, ~0, 0); - res = find_resource(dev, 0x10); + res = find_resource(dev, PCI_BASE_ADDRESS_0); if (!res) return; - // NOTE this will break as soon as the Azalia get's a bar above - // 4G. Is there anything we can do about it? + // NOTE this will break as soon as the Azalia get's 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); |