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 | |
Angel Pons | 4919028 | 2020-12-05 18:52:38 +0100 | [diff] [blame] | 37 | int azalia_enter_reset(u8 *base) |
| 38 | { |
| 39 | /* Set bit 0 to 0 to enter reset state (BAR + 0x8)[0] */ |
| 40 | return azalia_set_bits(base + HDA_GCTL_REG, HDA_GCTL_CRST, 0); |
| 41 | } |
| 42 | |
| 43 | int azalia_exit_reset(u8 *base) |
| 44 | { |
| 45 | /* Set bit 0 to 1 to exit reset state (BAR + 0x8)[0] */ |
| 46 | return azalia_set_bits(base + HDA_GCTL_REG, HDA_GCTL_CRST, HDA_GCTL_CRST); |
| 47 | } |
| 48 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 49 | static int codec_detect(u8 *base) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 50 | { |
| 51 | u32 reg32; |
| 52 | int count; |
| 53 | |
Angel Pons | 7f839f6 | 2020-12-05 19:02:14 +0100 | [diff] [blame^] | 54 | if (azalia_exit_reset(base) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 55 | goto no_codec; |
| 56 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 57 | /* clear STATESTS bits (BAR + 0xe)[2:0] */ |
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 | reg32 |= 7; |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 60 | write32(base + HDA_STATESTS_REG, reg32); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 61 | |
| 62 | /* Wait for readback of register to |
| 63 | * match what was just written to it |
| 64 | */ |
| 65 | count = 50; |
| 66 | do { |
| 67 | /* Wait 1ms based on BKDG wait time */ |
| 68 | mdelay(1); |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 69 | reg32 = read32(base + HDA_STATESTS_REG); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 70 | } while ((reg32 != 0) && --count); |
Martin Roth | 2ed0aa2 | 2016-01-05 20:58:58 -0700 | [diff] [blame] | 71 | /* Timeout occurred */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 72 | if (!count) |
| 73 | goto no_codec; |
| 74 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 75 | /* Set Bit 0 to 0 to enter reset state (BAR + 0x8)[0] */ |
Angel Pons | 61dd836 | 2020-12-05 18:02:32 +0100 | [diff] [blame] | 76 | if (azalia_set_bits(base + HDA_GCTL_REG, 1, 0) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 77 | goto no_codec; |
| 78 | |
Angel Pons | 7f839f6 | 2020-12-05 19:02:14 +0100 | [diff] [blame^] | 79 | if (azalia_exit_reset(base) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 80 | goto no_codec; |
| 81 | |
| 82 | /* Read in Codec location (BAR + 0xe)[2..0] */ |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 83 | reg32 = read32(base + HDA_STATESTS_REG); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 84 | reg32 &= 0x0f; |
| 85 | if (!reg32) |
| 86 | goto no_codec; |
| 87 | |
| 88 | return reg32; |
| 89 | |
| 90 | no_codec: |
| 91 | /* Codec Not found */ |
| 92 | /* Put HDA back in reset (BAR + 0x8) [0] */ |
Angel Pons | 61dd836 | 2020-12-05 18:02:32 +0100 | [diff] [blame] | 93 | azalia_set_bits(base + HDA_GCTL_REG, 1, 0); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 94 | printk(BIOS_DEBUG, "azalia_audio: No codec!\n"); |
| 95 | return 0; |
| 96 | } |
| 97 | |
Angel Pons | d3f7028 | 2020-12-05 18:28:33 +0100 | [diff] [blame] | 98 | /* |
| 99 | * Find a specific entry within a verb table |
| 100 | * |
| 101 | * @param verb_table: verb table data |
| 102 | * @param verb_table_bytes: verb table size in bytes |
| 103 | * @param viddid: vendor/device to search for |
| 104 | * @param verb: pointer to entry within table |
| 105 | * |
| 106 | * Returns size of the entry within the verb table, |
| 107 | * Returns 0 if the entry is not found |
| 108 | * |
| 109 | * The HDA verb table is composed of dwords. A set of 4 dwords is |
| 110 | * grouped together to form a "jack" descriptor. |
| 111 | * Bits 31:28 - Codec Address |
| 112 | * Bits 27:20 - NID |
| 113 | * Bits 19:8 - Verb ID |
| 114 | * Bits 7:0 - Payload |
| 115 | * |
| 116 | * coreboot groups different codec verb tables into a single table |
| 117 | * and prefixes each with a specific header consisting of 3 |
| 118 | * dword entries: |
| 119 | * 1 - Codec Vendor/Device ID |
| 120 | * 2 - Subsystem ID |
| 121 | * 3 - Number of jacks (groups of 4 dwords) for this codec |
| 122 | */ |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 123 | 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] | 124 | { |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 125 | int idx = 0; |
| 126 | |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 127 | while (idx < (verb_table_bytes / sizeof(u32))) { |
Angel Pons | f23c6a8 | 2020-12-05 18:32:05 +0100 | [diff] [blame] | 128 | /* Header contains the number of jacks, aka groups of 4 dwords */ |
| 129 | u32 verb_size = 4 * verb_table[idx + 2]; |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 130 | if (verb_table[idx] != viddid) { |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 131 | idx += verb_size + 3; // skip verb + header |
| 132 | continue; |
| 133 | } |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 134 | *verb = &verb_table[idx + 3]; |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 135 | return verb_size; |
| 136 | } |
| 137 | |
| 138 | /* Not all codecs need to load another verb */ |
| 139 | return 0; |
| 140 | } |
| 141 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 142 | /* |
| 143 | * Wait 50usec for the codec to indicate it is ready. |
| 144 | * No response would imply that the codec is non-operative. |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 145 | */ |
| 146 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 147 | static int wait_for_ready(u8 *base) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 148 | { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 149 | /* Use a 50 usec timeout - the Linux kernel uses the same duration */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 150 | int timeout = 50; |
| 151 | |
| 152 | while (timeout--) { |
| 153 | u32 reg32 = read32(base + HDA_ICII_REG); |
| 154 | if (!(reg32 & HDA_ICII_BUSY)) |
| 155 | return 0; |
| 156 | udelay(1); |
| 157 | } |
| 158 | |
| 159 | return -1; |
| 160 | } |
| 161 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 162 | /* |
| 163 | * Wait 50usec for the codec to indicate that it accepted the previous command. |
| 164 | * No response would imply that the code is non-operative. |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 165 | */ |
| 166 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 167 | static int wait_for_valid(u8 *base) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 168 | { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 169 | u32 reg32; |
| 170 | /* Use a 50 usec timeout - the Linux kernel uses the same duration */ |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 171 | int timeout = 25; |
| 172 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 173 | /* Send the verb to the codec */ |
| 174 | reg32 = read32(base + HDA_ICII_REG); |
| 175 | reg32 |= HDA_ICII_BUSY | HDA_ICII_VALID; |
| 176 | write32(base + HDA_ICII_REG, reg32); |
| 177 | |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 178 | while (timeout--) { |
| 179 | udelay(1); |
| 180 | } |
| 181 | timeout = 50; |
| 182 | while (timeout--) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 183 | reg32 = read32(base + HDA_ICII_REG); |
| 184 | if ((reg32 & (HDA_ICII_VALID | HDA_ICII_BUSY)) == HDA_ICII_VALID) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 185 | return 0; |
| 186 | udelay(1); |
| 187 | } |
| 188 | |
| 189 | return -1; |
| 190 | } |
| 191 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 192 | static void codec_init(struct device *dev, u8 *base, int addr) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 193 | { |
| 194 | u32 reg32; |
| 195 | const u32 *verb; |
| 196 | u32 verb_size; |
| 197 | int i; |
| 198 | |
| 199 | printk(BIOS_DEBUG, "azalia_audio: Initializing codec #%d\n", addr); |
| 200 | |
| 201 | /* 1 */ |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 202 | if (wait_for_ready(base) < 0) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 203 | printk(BIOS_DEBUG, " codec not ready.\n"); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 204 | return; |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 205 | } |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 206 | |
| 207 | reg32 = (addr << 28) | 0x000f0000; |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 208 | write32(base + HDA_IC_REG, reg32); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 209 | |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 210 | if (wait_for_valid(base) < 0) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 211 | printk(BIOS_DEBUG, " codec not valid.\n"); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 212 | return; |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 213 | } |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 214 | |
| 215 | /* 2 */ |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 216 | reg32 = read32(base + HDA_IR_REG); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 217 | printk(BIOS_DEBUG, "azalia_audio: codec viddid: %08x\n", reg32); |
Angel Pons | d425ddd | 2020-12-05 18:22:58 +0100 | [diff] [blame] | 218 | 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] | 219 | |
| 220 | if (!verb_size) { |
| 221 | printk(BIOS_DEBUG, "azalia_audio: No verb!\n"); |
| 222 | return; |
| 223 | } |
| 224 | printk(BIOS_DEBUG, "azalia_audio: verb_size: %d\n", verb_size); |
| 225 | |
| 226 | /* 3 */ |
| 227 | for (i = 0; i < verb_size; i++) { |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 228 | if (wait_for_ready(base) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 229 | return; |
| 230 | |
Elyes HAOUAS | d8c4799 | 2020-08-03 15:31:39 +0200 | [diff] [blame] | 231 | write32(base + HDA_IC_REG, verb[i]); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 232 | |
Angel Pons | 554713e | 2020-10-24 23:23:07 +0200 | [diff] [blame] | 233 | if (wait_for_valid(base) < 0) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 234 | return; |
| 235 | } |
| 236 | printk(BIOS_DEBUG, "azalia_audio: verb loaded.\n"); |
| 237 | } |
| 238 | |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 239 | static void codecs_init(struct device *dev, u8 *base, u32 codec_mask) |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 240 | { |
| 241 | int i; |
| 242 | |
| 243 | for (i = 2; i >= 0; i--) { |
| 244 | if (codec_mask & (1 << i)) |
| 245 | codec_init(dev, base, i); |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | void azalia_audio_init(struct device *dev) |
| 250 | { |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 251 | u8 *base; |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 252 | struct resource *res; |
| 253 | u32 codec_mask; |
| 254 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 255 | res = find_resource(dev, PCI_BASE_ADDRESS_0); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 256 | if (!res) |
| 257 | return; |
| 258 | |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 259 | // NOTE this will break as soon as the azalia_audio get's a bar above 4G. |
| 260 | // Is there anything we can do about it? |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 261 | base = res2mmio(res, 0, 0); |
| 262 | printk(BIOS_DEBUG, "azalia_audio: base = %p\n", base); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 263 | codec_mask = codec_detect(base); |
| 264 | |
| 265 | if (codec_mask) { |
Elyes HAOUAS | 6ea24ff | 2020-08-11 09:21:24 +0200 | [diff] [blame] | 266 | printk(BIOS_DEBUG, "azalia_audio: codec_mask = %02x\n", codec_mask); |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 267 | codecs_init(dev, base, codec_mask); |
| 268 | } |
| 269 | } |
| 270 | |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 271 | struct device_operations default_azalia_audio_ops = { |
| 272 | .read_resources = pci_dev_read_resources, |
| 273 | .set_resources = pci_dev_set_resources, |
| 274 | .enable_resources = pci_dev_enable_resources, |
| 275 | .init = azalia_audio_init, |
Angel Pons | 1fc0edd | 2020-05-31 00:03:28 +0200 | [diff] [blame] | 276 | .ops_pci = &pci_dev_ops_pci, |
Andrew Wu | b7bb70d | 2013-08-12 20:07:47 +0800 | [diff] [blame] | 277 | }; |