Angel Pons | c74dae9 | 2020-04-02 23:48:16 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 2 | |
| 3 | #include <console/console.h> |
| 4 | #include <device/device.h> |
| 5 | #include <device/pci.h> |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 6 | #include <device/azalia_device.h> |
Kyösti Mälkki | 13f6650 | 2019-03-03 08:01:05 +0200 | [diff] [blame] | 7 | #include <device/mmio.h> |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 8 | #include <delay.h> |
| 9 | |
Angel Pons | 61dd836 | 2020-12-05 18:02:32 +0100 | [diff] [blame] | 10 | int azalia_set_bits(void *port, u32 mask, u32 val) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 11 | { |
| 12 | u32 reg32; |
| 13 | int count; |
| 14 | |
| 15 | /* Write (val & mask) to port */ |
| 16 | val &= mask; |
| 17 | reg32 = read32(port); |
| 18 | reg32 &= ~mask; |
| 19 | reg32 |= val; |
| 20 | write32(port, reg32); |
| 21 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 22 | /* Wait for readback of register to match what was just written to it */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 23 | count = 50; |
| 24 | do { |
| 25 | /* Wait 1ms based on BKDG wait time */ |
| 26 | mdelay(1); |
| 27 | reg32 = read32(port); |
| 28 | reg32 &= mask; |
| 29 | } while ((reg32 != val) && --count); |
| 30 | |
| 31 | /* Timeout occurred */ |
| 32 | if (!count) |
| 33 | return -1; |
| 34 | return 0; |
| 35 | } |
| 36 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 37 | static int codec_detect(u8 *base) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 38 | { |
| 39 | u32 reg32; |
| 40 | int count; |
| 41 | |
| 42 | /* Set Bit 0 to 1 to exit reset state (BAR + 0x8)[0] */ |
Angel Pons | 61dd836 | 2020-12-05 18:02:32 +0100 | [diff] [blame] | 43 | if (azalia_set_bits(base + HDA_GCTL_REG, 1, HDA_GCTL_CRST) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 44 | goto no_codec; |
| 45 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 46 | /* clear STATESTS bits (BAR + 0xe)[2:0] */ |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 47 | reg32 = read32(base + HDA_STATESTS_REG); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 48 | reg32 |= 7; |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 49 | write32(base + HDA_STATESTS_REG, reg32); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 50 | |
| 51 | /* Wait for readback of register to |
| 52 | * match what was just written to it |
| 53 | */ |
| 54 | count = 50; |
| 55 | do { |
| 56 | /* Wait 1ms based on BKDG wait time */ |
| 57 | mdelay(1); |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 58 | reg32 = read32(base + HDA_STATESTS_REG); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 59 | } while ((reg32 != 0) && --count); |
Martin Roth | 2ed0aa2 | 2016-01-05 20:58:58 -0700 | [diff] [blame] | 60 | /* Timeout occurred */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 61 | if (!count) |
| 62 | goto no_codec; |
| 63 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 64 | /* Set Bit 0 to 0 to enter reset state (BAR + 0x8)[0] */ |
Angel Pons | 61dd836 | 2020-12-05 18:02:32 +0100 | [diff] [blame] | 65 | if (azalia_set_bits(base + HDA_GCTL_REG, 1, 0) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 66 | goto no_codec; |
| 67 | |
| 68 | /* Set Bit 0 to 1 to exit reset state (BAR + 0x8)[0] */ |
Angel Pons | 61dd836 | 2020-12-05 18:02:32 +0100 | [diff] [blame] | 69 | if (azalia_set_bits(base + HDA_GCTL_REG, 1, HDA_GCTL_CRST) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 70 | goto no_codec; |
| 71 | |
| 72 | /* Read in Codec location (BAR + 0xe)[2..0] */ |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 73 | reg32 = read32(base + HDA_STATESTS_REG); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 74 | reg32 &= 0x0f; |
| 75 | if (!reg32) |
| 76 | goto no_codec; |
| 77 | |
| 78 | return reg32; |
| 79 | |
| 80 | no_codec: |
| 81 | /* Codec Not found */ |
| 82 | /* Put HDA back in reset (BAR + 0x8) [0] */ |
Angel Pons | 61dd836 | 2020-12-05 18:02:32 +0100 | [diff] [blame] | 83 | azalia_set_bits(base + HDA_GCTL_REG, 1, 0); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 84 | printk(BIOS_DEBUG, "azalia_audio: No codec!\n"); |
| 85 | return 0; |
| 86 | } |
| 87 | |
Angel Pons | d3f7028 | 2020-12-05 18:28:33 +0100 | [diff] [blame] | 88 | /* |
| 89 | * Find a specific entry within a verb table |
| 90 | * |
| 91 | * @param verb_table: verb table data |
| 92 | * @param verb_table_bytes: verb table size in bytes |
| 93 | * @param viddid: vendor/device to search for |
| 94 | * @param verb: pointer to entry within table |
| 95 | * |
| 96 | * Returns size of the entry within the verb table, |
| 97 | * Returns 0 if the entry is not found |
| 98 | * |
| 99 | * The HDA verb table is composed of dwords. A set of 4 dwords is |
| 100 | * grouped together to form a "jack" descriptor. |
| 101 | * Bits 31:28 - Codec Address |
| 102 | * Bits 27:20 - NID |
| 103 | * Bits 19:8 - Verb ID |
| 104 | * Bits 7:0 - Payload |
| 105 | * |
| 106 | * coreboot groups different codec verb tables into a single table |
| 107 | * and prefixes each with a specific header consisting of 3 |
| 108 | * dword entries: |
| 109 | * 1 - Codec Vendor/Device ID |
| 110 | * 2 - Subsystem ID |
| 111 | * 3 - Number of jacks (groups of 4 dwords) for this codec |
| 112 | */ |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 113 | u32 azalia_find_verb(const u32 *verb_table, u32 verb_table_bytes, u32 viddid, const u32 **verb) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 114 | { |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 115 | int idx = 0; |
| 116 | |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 117 | while (idx < (verb_table_bytes / sizeof(u32))) { |
Angel Pons | f23c6a8 | 2020-12-05 18:32:05 +0100 | [diff] [blame^] | 118 | /* Header contains the number of jacks, aka groups of 4 dwords */ |
| 119 | u32 verb_size = 4 * verb_table[idx + 2]; |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 120 | if (verb_table[idx] != viddid) { |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 121 | idx += verb_size + 3; // skip verb + header |
| 122 | continue; |
| 123 | } |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 124 | *verb = &verb_table[idx + 3]; |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 125 | return verb_size; |
| 126 | } |
| 127 | |
| 128 | /* Not all codecs need to load another verb */ |
| 129 | return 0; |
| 130 | } |
| 131 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 132 | /* |
| 133 | * Wait 50usec for the codec to indicate it is ready. |
| 134 | * No response would imply that the codec is non-operative. |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 135 | */ |
| 136 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 137 | static int wait_for_ready(u8 *base) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 138 | { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 139 | /* Use a 50 usec timeout - the Linux kernel uses the same duration */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 140 | int timeout = 50; |
| 141 | |
| 142 | while (timeout--) { |
| 143 | u32 reg32 = read32(base + HDA_ICII_REG); |
| 144 | if (!(reg32 & HDA_ICII_BUSY)) |
| 145 | return 0; |
| 146 | udelay(1); |
| 147 | } |
| 148 | |
| 149 | return -1; |
| 150 | } |
| 151 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 152 | /* |
| 153 | * Wait 50usec for the codec to indicate that it accepted the previous command. |
| 154 | * No response would imply that the code is non-operative. |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 155 | */ |
| 156 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 157 | static int wait_for_valid(u8 *base) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 158 | { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 159 | u32 reg32; |
| 160 | /* Use a 50 usec timeout - the Linux kernel uses the same duration */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 161 | int timeout = 25; |
| 162 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 163 | /* Send the verb to the codec */ |
| 164 | reg32 = read32(base + HDA_ICII_REG); |
| 165 | reg32 |= HDA_ICII_BUSY | HDA_ICII_VALID; |
| 166 | write32(base + HDA_ICII_REG, reg32); |
| 167 | |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 168 | while (timeout--) { |
| 169 | udelay(1); |
| 170 | } |
| 171 | timeout = 50; |
| 172 | while (timeout--) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 173 | reg32 = read32(base + HDA_ICII_REG); |
| 174 | if ((reg32 & (HDA_ICII_VALID | HDA_ICII_BUSY)) == HDA_ICII_VALID) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 175 | return 0; |
| 176 | udelay(1); |
| 177 | } |
| 178 | |
| 179 | return -1; |
| 180 | } |
| 181 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 182 | static void codec_init(struct device *dev, u8 *base, int addr) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 183 | { |
| 184 | u32 reg32; |
| 185 | const u32 *verb; |
| 186 | u32 verb_size; |
| 187 | int i; |
| 188 | |
| 189 | printk(BIOS_DEBUG, "azalia_audio: Initializing codec #%d\n", addr); |
| 190 | |
| 191 | /* 1 */ |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 192 | if (wait_for_ready(base) < 0) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 193 | printk(BIOS_DEBUG, " codec not ready.\n"); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 194 | return; |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 195 | } |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 196 | |
| 197 | reg32 = (addr << 28) | 0x000f0000; |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 198 | write32(base + HDA_IC_REG, reg32); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 199 | |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 200 | if (wait_for_valid(base) < 0) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 201 | printk(BIOS_DEBUG, " codec not valid.\n"); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 202 | return; |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 203 | } |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 204 | |
| 205 | /* 2 */ |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 206 | reg32 = read32(base + HDA_IR_REG); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 207 | printk(BIOS_DEBUG, "azalia_audio: codec viddid: %08x\n", reg32); |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 208 | verb_size = azalia_find_verb(cim_verb_data, cim_verb_data_size, reg32, &verb); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 209 | |
| 210 | if (!verb_size) { |
| 211 | printk(BIOS_DEBUG, "azalia_audio: No verb!\n"); |
| 212 | return; |
| 213 | } |
| 214 | printk(BIOS_DEBUG, "azalia_audio: verb_size: %d\n", verb_size); |
| 215 | |
| 216 | /* 3 */ |
| 217 | for (i = 0; i < verb_size; i++) { |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 218 | if (wait_for_ready(base) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 219 | return; |
| 220 | |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 221 | write32(base + HDA_IC_REG, verb[i]); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 222 | |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 223 | if (wait_for_valid(base) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 224 | return; |
| 225 | } |
| 226 | printk(BIOS_DEBUG, "azalia_audio: verb loaded.\n"); |
| 227 | } |
| 228 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 229 | static void codecs_init(struct device *dev, u8 *base, u32 codec_mask) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 230 | { |
| 231 | int i; |
| 232 | |
| 233 | for (i = 2; i >= 0; i--) { |
| 234 | if (codec_mask & (1 << i)) |
| 235 | codec_init(dev, base, i); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | void azalia_audio_init(struct device *dev) |
| 240 | { |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 241 | u8 *base; |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 242 | struct resource *res; |
| 243 | u32 codec_mask; |
| 244 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 245 | res = find_resource(dev, PCI_BASE_ADDRESS_0); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 246 | if (!res) |
| 247 | return; |
| 248 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 249 | // NOTE this will break as soon as the azalia_audio get's a bar above 4G. |
| 250 | // Is there anything we can do about it? |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 251 | base = res2mmio(res, 0, 0); |
| 252 | printk(BIOS_DEBUG, "azalia_audio: base = %p\n", base); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 253 | codec_mask = codec_detect(base); |
| 254 | |
| 255 | if (codec_mask) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 256 | printk(BIOS_DEBUG, "azalia_audio: codec_mask = %02x\n", codec_mask); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 257 | codecs_init(dev, base, codec_mask); |
| 258 | } |
| 259 | } |
| 260 | |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 261 | struct device_operations default_azalia_audio_ops = { |
| 262 | .read_resources = pci_dev_read_resources, |
| 263 | .set_resources = pci_dev_set_resources, |
| 264 | .enable_resources = pci_dev_enable_resources, |
| 265 | .init = azalia_audio_init, |
Angel Pons | 1fc0edd | 2020-05-31 00:03:28 +0200 | [diff] [blame] | 266 | .ops_pci = &pci_dev_ops_pci, |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 267 | }; |