Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2016 Google Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | */ |
| 15 | |
| 16 | #include <string.h> |
| 17 | #include <arch/acpi.h> |
| 18 | #include <arch/acpi_device.h> |
| 19 | #include <arch/acpigen.h> |
| 20 | #include <device/device.h> |
| 21 | #include <device/path.h> |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 22 | #if IS_ENABLED(CONFIG_GENERIC_GPIO_LIB) |
| 23 | #include <gpio.h> |
| 24 | #endif |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 25 | |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 26 | #define ACPI_DP_UUID "daffd814-6eba-4d8c-8a91-bc9bbf4aa301" |
| 27 | #define ACPI_DP_CHILD_UUID "dbb8e3e6-5886-4ba6-8795-1319f52a966b" |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 28 | |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 29 | /* Write empty word value and return pointer to it */ |
| 30 | static void *acpi_device_write_zero_len(void) |
| 31 | { |
| 32 | char *p = acpigen_get_current(); |
| 33 | acpigen_emit_word(0); |
| 34 | return p; |
| 35 | } |
| 36 | |
| 37 | /* Fill in length value from start to current at specified location */ |
| 38 | static void acpi_device_fill_from_len(char *ptr, char *start) |
| 39 | { |
| 40 | uint16_t len = acpigen_get_current() - start; |
| 41 | ptr[0] = len & 0xff; |
| 42 | ptr[1] = (len >> 8) & 0xff; |
| 43 | } |
| 44 | |
| 45 | /* |
| 46 | * Fill in the length field with the value calculated from after |
| 47 | * the 16bit field to acpigen current as this length value does |
| 48 | * not include the length field itself. |
| 49 | */ |
| 50 | static void acpi_device_fill_len(void *ptr) |
| 51 | { |
| 52 | acpi_device_fill_from_len(ptr, ptr + sizeof(uint16_t)); |
| 53 | } |
| 54 | |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 55 | /* Locate and return the ACPI name for this device */ |
| 56 | const char *acpi_device_name(struct device *dev) |
| 57 | { |
Duncan Laurie | 4702914 | 2018-05-07 14:28:53 -0700 | [diff] [blame] | 58 | struct device *pdev = dev; |
| 59 | const char *name = NULL; |
| 60 | |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 61 | if (!dev) |
| 62 | return NULL; |
| 63 | |
| 64 | /* Check for device specific handler */ |
| 65 | if (dev->ops->acpi_name) |
| 66 | return dev->ops->acpi_name(dev); |
| 67 | |
Duncan Laurie | 4702914 | 2018-05-07 14:28:53 -0700 | [diff] [blame] | 68 | /* Walk up the tree to find if any parent can identify this device */ |
| 69 | while (pdev->bus) { |
| 70 | pdev = pdev->bus->dev; |
| 71 | if (!pdev) |
| 72 | break; |
| 73 | if (pdev->path.type == DEVICE_PATH_ROOT) |
| 74 | break; |
| 75 | if (pdev->ops && pdev->ops->acpi_name) |
| 76 | name = pdev->ops->acpi_name(dev); |
| 77 | if (name) |
| 78 | return name; |
| 79 | } |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 80 | |
| 81 | return NULL; |
| 82 | } |
| 83 | |
| 84 | /* Recursive function to find the root device and print a path from there */ |
Duncan Laurie | 4702914 | 2018-05-07 14:28:53 -0700 | [diff] [blame] | 85 | static ssize_t acpi_device_path_fill(struct device *dev, char *buf, |
| 86 | size_t buf_len, size_t cur) |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 87 | { |
| 88 | const char *name = acpi_device_name(dev); |
Duncan Laurie | 4702914 | 2018-05-07 14:28:53 -0700 | [diff] [blame] | 89 | ssize_t next = 0; |
| 90 | |
| 91 | if (!name) |
| 92 | return -1; |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 93 | |
| 94 | /* |
| 95 | * Make sure this name segment will fit, including the path segment |
| 96 | * separator and possible NUL terminator if this is the last segment. |
| 97 | */ |
Duncan Laurie | 4702914 | 2018-05-07 14:28:53 -0700 | [diff] [blame] | 98 | if (!dev || (cur + strlen(name) + 2) > buf_len) |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 99 | return cur; |
| 100 | |
| 101 | /* Walk up the tree to the root device */ |
| 102 | if (dev->path.type != DEVICE_PATH_ROOT && dev->bus && dev->bus->dev) |
| 103 | next = acpi_device_path_fill(dev->bus->dev, buf, buf_len, cur); |
Duncan Laurie | 4702914 | 2018-05-07 14:28:53 -0700 | [diff] [blame] | 104 | if (next < 0) |
| 105 | return next; |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 106 | |
| 107 | /* Fill in the path from the root device */ |
| 108 | next += snprintf(buf + next, buf_len - next, "%s%s", |
Timothy Pearson | aeb6101 | 2017-04-13 17:06:16 -0500 | [diff] [blame] | 109 | (dev->path.type == DEVICE_PATH_ROOT |
| 110 | || (strlen(name) == 0)) ? |
| 111 | "" : ".", name); |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 112 | |
| 113 | return next; |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | * Warning: just as with dev_path() this uses a static buffer |
| 118 | * so should not be called mulitple times in one statement |
| 119 | */ |
| 120 | const char *acpi_device_path(struct device *dev) |
| 121 | { |
| 122 | static char buf[DEVICE_PATH_MAX] = {}; |
| 123 | |
| 124 | if (!dev) |
| 125 | return NULL; |
| 126 | |
| 127 | if (acpi_device_path_fill(dev, buf, sizeof(buf), 0) <= 0) |
| 128 | return NULL; |
| 129 | |
| 130 | return buf; |
| 131 | } |
| 132 | |
| 133 | /* Return the path of the parent device as the ACPI Scope for this device */ |
| 134 | const char *acpi_device_scope(struct device *dev) |
| 135 | { |
Duncan Laurie | d02685b | 2016-06-30 14:37:37 -0700 | [diff] [blame] | 136 | static char buf[DEVICE_PATH_MAX] = {}; |
| 137 | |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 138 | if (!dev || !dev->bus || !dev->bus->dev) |
| 139 | return NULL; |
| 140 | |
Duncan Laurie | d02685b | 2016-06-30 14:37:37 -0700 | [diff] [blame] | 141 | if (acpi_device_path_fill(dev->bus->dev, buf, sizeof(buf), 0) <= 0) |
| 142 | return NULL; |
| 143 | |
| 144 | return buf; |
Duncan Laurie | d9af3ce | 2016-05-08 18:15:25 -0700 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | /* Concatentate the device path and provided name suffix */ |
| 148 | const char *acpi_device_path_join(struct device *dev, const char *name) |
| 149 | { |
| 150 | static char buf[DEVICE_PATH_MAX] = {}; |
| 151 | size_t len; |
| 152 | |
| 153 | if (!dev) |
| 154 | return NULL; |
| 155 | |
| 156 | /* Build the path of this device */ |
| 157 | len = acpi_device_path_fill(dev, buf, sizeof(buf), 0); |
| 158 | if (len <= 0) |
| 159 | return NULL; |
| 160 | |
| 161 | /* Ensure there is room for the added name, separator, and NUL */ |
| 162 | if ((len + strlen(name) + 2) > sizeof(buf)) |
| 163 | return NULL; |
| 164 | snprintf(buf + len, sizeof(buf) - len, ".%s", name); |
| 165 | |
| 166 | return buf; |
| 167 | } |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 168 | |
Hung-Te Lin | b4be50c | 2018-09-10 10:55:49 +0800 | [diff] [blame] | 169 | int acpi_device_status(const struct device *dev) |
| 170 | { |
| 171 | if (!dev->enabled) |
| 172 | return ACPI_STATUS_DEVICE_ALL_OFF; |
| 173 | if (dev->hidden) |
| 174 | return ACPI_STATUS_DEVICE_HIDDEN_ON; |
| 175 | return ACPI_STATUS_DEVICE_ALL_ON; |
| 176 | } |
| 177 | |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 178 | /* ACPI 6.1 section 6.4.3.6: Extended Interrupt Descriptor */ |
| 179 | void acpi_device_write_interrupt(const struct acpi_irq *irq) |
| 180 | { |
| 181 | void *desc_length; |
| 182 | uint8_t flags; |
| 183 | |
| 184 | if (!irq || !irq->pin) |
| 185 | return; |
| 186 | |
| 187 | /* This is supported by GpioInt() but not Interrupt() */ |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 188 | if (irq->polarity == ACPI_IRQ_ACTIVE_BOTH) |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 189 | return; |
| 190 | |
| 191 | /* Byte 0: Descriptor Type */ |
| 192 | acpigen_emit_byte(ACPI_DESCRIPTOR_INTERRUPT); |
| 193 | |
| 194 | /* Byte 1-2: Length (filled in later) */ |
| 195 | desc_length = acpi_device_write_zero_len(); |
| 196 | |
| 197 | /* |
| 198 | * Byte 3: Flags |
| 199 | * [7:5]: Reserved |
| 200 | * [4]: Wake (0=NO_WAKE 1=WAKE) |
| 201 | * [3]: Sharing (0=EXCLUSIVE 1=SHARED) |
| 202 | * [2]: Polarity (0=HIGH 1=LOW) |
| 203 | * [1]: Mode (0=LEVEL 1=EDGE) |
| 204 | * [0]: Resource (0=PRODUCER 1=CONSUMER) |
| 205 | */ |
| 206 | flags = 1 << 0; /* ResourceConsumer */ |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 207 | if (irq->mode == ACPI_IRQ_EDGE_TRIGGERED) |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 208 | flags |= 1 << 1; |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 209 | if (irq->polarity == ACPI_IRQ_ACTIVE_LOW) |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 210 | flags |= 1 << 2; |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 211 | if (irq->shared == ACPI_IRQ_SHARED) |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 212 | flags |= 1 << 3; |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 213 | if (irq->wake == ACPI_IRQ_WAKE) |
Duncan Laurie | 6b7c1f6 | 2016-05-09 15:38:36 -0700 | [diff] [blame] | 214 | flags |= 1 << 4; |
| 215 | acpigen_emit_byte(flags); |
| 216 | |
| 217 | /* Byte 4: Interrupt Table Entry Count */ |
| 218 | acpigen_emit_byte(1); |
| 219 | |
| 220 | /* Byte 5-8: Interrupt Number */ |
| 221 | acpigen_emit_dword(irq->pin); |
| 222 | |
| 223 | /* Fill in Descriptor Length (account for len word) */ |
| 224 | acpi_device_fill_len(desc_length); |
| 225 | } |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 226 | |
| 227 | /* ACPI 6.1 section 6.4.3.8.1 - GPIO Interrupt or I/O */ |
| 228 | void acpi_device_write_gpio(const struct acpi_gpio *gpio) |
| 229 | { |
| 230 | void *start, *desc_length; |
| 231 | void *pin_table_offset, *vendor_data_offset, *resource_offset; |
| 232 | uint16_t flags = 0; |
| 233 | int pin; |
| 234 | |
| 235 | if (!gpio || gpio->type > ACPI_GPIO_TYPE_IO) |
| 236 | return; |
| 237 | |
| 238 | start = acpigen_get_current(); |
| 239 | |
| 240 | /* Byte 0: Descriptor Type */ |
| 241 | acpigen_emit_byte(ACPI_DESCRIPTOR_GPIO); |
| 242 | |
| 243 | /* Byte 1-2: Length (fill in later) */ |
| 244 | desc_length = acpi_device_write_zero_len(); |
| 245 | |
| 246 | /* Byte 3: Revision ID */ |
| 247 | acpigen_emit_byte(ACPI_GPIO_REVISION_ID); |
| 248 | |
| 249 | /* Byte 4: GpioIo or GpioInt */ |
| 250 | acpigen_emit_byte(gpio->type); |
| 251 | |
| 252 | /* |
| 253 | * Byte 5-6: General Flags |
| 254 | * [15:1]: 0 => Reserved |
| 255 | * [0]: 1 => ResourceConsumer |
| 256 | */ |
| 257 | acpigen_emit_word(1 << 0); |
| 258 | |
| 259 | switch (gpio->type) { |
| 260 | case ACPI_GPIO_TYPE_INTERRUPT: |
| 261 | /* |
| 262 | * Byte 7-8: GPIO Interrupt Flags |
| 263 | * [15:5]: 0 => Reserved |
| 264 | * [4]: Wake (0=NO_WAKE 1=WAKE) |
| 265 | * [3]: Sharing (0=EXCLUSIVE 1=SHARED) |
| 266 | * [2:1]: Polarity (0=HIGH 1=LOW 2=BOTH) |
| 267 | * [0]: Mode (0=LEVEL 1=EDGE) |
| 268 | */ |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 269 | if (gpio->irq.mode == ACPI_IRQ_EDGE_TRIGGERED) |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 270 | flags |= 1 << 0; |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 271 | if (gpio->irq.shared == ACPI_IRQ_SHARED) |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 272 | flags |= 1 << 3; |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 273 | if (gpio->irq.wake == ACPI_IRQ_WAKE) |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 274 | flags |= 1 << 4; |
| 275 | |
| 276 | switch (gpio->irq.polarity) { |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 277 | case ACPI_IRQ_ACTIVE_HIGH: |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 278 | flags |= 0 << 1; |
| 279 | break; |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 280 | case ACPI_IRQ_ACTIVE_LOW: |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 281 | flags |= 1 << 1; |
| 282 | break; |
Furquan Shaikh | 5b9b593 | 2017-02-21 13:16:30 -0800 | [diff] [blame] | 283 | case ACPI_IRQ_ACTIVE_BOTH: |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 284 | flags |= 2 << 1; |
| 285 | break; |
| 286 | } |
| 287 | break; |
| 288 | |
| 289 | case ACPI_GPIO_TYPE_IO: |
| 290 | /* |
| 291 | * Byte 7-8: GPIO IO Flags |
| 292 | * [15:4]: 0 => Reserved |
| 293 | * [3]: Sharing (0=EXCLUSIVE 1=SHARED) |
| 294 | * [2]: 0 => Reserved |
| 295 | * [1:0]: IO Restriction |
| 296 | * 0 => IoRestrictionNone |
| 297 | * 1 => IoRestrictionInputOnly |
| 298 | * 2 => IoRestrictionOutputOnly |
| 299 | * 3 => IoRestrictionNoneAndPreserve |
| 300 | */ |
| 301 | flags |= gpio->io_restrict & 3; |
| 302 | if (gpio->io_shared) |
| 303 | flags |= 1 << 3; |
| 304 | break; |
| 305 | } |
| 306 | acpigen_emit_word(flags); |
| 307 | |
| 308 | /* |
| 309 | * Byte 9: Pin Configuration |
| 310 | * 0x01 => Default (no configuration applied) |
| 311 | * 0x02 => Pull-up |
| 312 | * 0x03 => Pull-down |
| 313 | * 0x04-0x7F => Reserved |
| 314 | * 0x80-0xff => Vendor defined |
| 315 | */ |
| 316 | acpigen_emit_byte(gpio->pull); |
| 317 | |
| 318 | /* Byte 10-11: Output Drive Strength in 1/100 mA */ |
| 319 | acpigen_emit_word(gpio->output_drive_strength); |
| 320 | |
| 321 | /* Byte 12-13: Debounce Timeout in 1/100 ms */ |
| 322 | acpigen_emit_word(gpio->interrupt_debounce_timeout); |
| 323 | |
| 324 | /* Byte 14-15: Pin Table Offset, relative to start */ |
| 325 | pin_table_offset = acpi_device_write_zero_len(); |
| 326 | |
| 327 | /* Byte 16: Reserved */ |
| 328 | acpigen_emit_byte(0); |
| 329 | |
| 330 | /* Byte 17-18: Resource Source Name Offset, relative to start */ |
| 331 | resource_offset = acpi_device_write_zero_len(); |
| 332 | |
| 333 | /* Byte 19-20: Vendor Data Offset, relative to start */ |
| 334 | vendor_data_offset = acpi_device_write_zero_len(); |
| 335 | |
| 336 | /* Byte 21-22: Vendor Data Length */ |
| 337 | acpigen_emit_word(0); |
| 338 | |
| 339 | /* Fill in Pin Table Offset */ |
| 340 | acpi_device_fill_from_len(pin_table_offset, start); |
| 341 | |
| 342 | /* Pin Table, one word for each pin */ |
Duncan Laurie | 5b6c28c | 2016-06-29 10:47:22 -0700 | [diff] [blame] | 343 | for (pin = 0; pin < gpio->pin_count; pin++) { |
| 344 | uint16_t acpi_pin = gpio->pins[pin]; |
| 345 | #if IS_ENABLED(CONFIG_GENERIC_GPIO_LIB) |
| 346 | acpi_pin = gpio_acpi_pin(acpi_pin); |
| 347 | #endif |
| 348 | acpigen_emit_word(acpi_pin); |
| 349 | } |
Duncan Laurie | cfb6ea7 | 2016-05-09 17:08:38 -0700 | [diff] [blame] | 350 | |
| 351 | /* Fill in Resource Source Name Offset */ |
| 352 | acpi_device_fill_from_len(resource_offset, start); |
| 353 | |
| 354 | /* Resource Source Name String */ |
| 355 | #if IS_ENABLED(CONFIG_GENERIC_GPIO_LIB) |
| 356 | acpigen_emit_string(gpio->resource ? : gpio_acpi_path(gpio->pins[0])); |
| 357 | #else |
| 358 | acpigen_emit_string(gpio->resource); |
| 359 | #endif |
| 360 | |
| 361 | /* Fill in Vendor Data Offset */ |
| 362 | acpi_device_fill_from_len(vendor_data_offset, start); |
| 363 | |
| 364 | /* Fill in GPIO Descriptor Length (account for len word) */ |
| 365 | acpi_device_fill_len(desc_length); |
| 366 | } |
Duncan Laurie | 1010b4a | 2016-05-09 20:10:47 -0700 | [diff] [blame] | 367 | |
| 368 | /* ACPI 6.1 section 6.4.3.8.2.1 - I2cSerialBus() */ |
| 369 | void acpi_device_write_i2c(const struct acpi_i2c *i2c) |
| 370 | { |
| 371 | void *desc_length, *type_length; |
| 372 | |
| 373 | /* Byte 0: Descriptor Type */ |
| 374 | acpigen_emit_byte(ACPI_DESCRIPTOR_SERIAL_BUS); |
| 375 | |
| 376 | /* Byte 1+2: Length (filled in later) */ |
| 377 | desc_length = acpi_device_write_zero_len(); |
| 378 | |
| 379 | /* Byte 3: Revision ID */ |
| 380 | acpigen_emit_byte(ACPI_SERIAL_BUS_REVISION_ID); |
| 381 | |
| 382 | /* Byte 4: Resource Source Index is Reserved */ |
| 383 | acpigen_emit_byte(0); |
| 384 | |
| 385 | /* Byte 5: Serial Bus Type is I2C */ |
| 386 | acpigen_emit_byte(ACPI_SERIAL_BUS_TYPE_I2C); |
| 387 | |
| 388 | /* |
| 389 | * Byte 6: Flags |
| 390 | * [7:2]: 0 => Reserved |
| 391 | * [1]: 1 => ResourceConsumer |
| 392 | * [0]: 0 => ControllerInitiated |
| 393 | */ |
| 394 | acpigen_emit_byte(1 << 1); |
| 395 | |
| 396 | /* |
| 397 | * Byte 7-8: Type Specific Flags |
| 398 | * [15:1]: 0 => Reserved |
| 399 | * [0]: 0 => 7bit, 1 => 10bit |
| 400 | */ |
| 401 | acpigen_emit_word(i2c->mode_10bit); |
| 402 | |
| 403 | /* Byte 9: Type Specific Revision ID */ |
| 404 | acpigen_emit_byte(ACPI_SERIAL_BUS_REVISION_ID); |
| 405 | |
| 406 | /* Byte 10-11: I2C Type Data Length */ |
| 407 | type_length = acpi_device_write_zero_len(); |
| 408 | |
| 409 | /* Byte 12-15: I2C Bus Speed */ |
| 410 | acpigen_emit_dword(i2c->speed); |
| 411 | |
| 412 | /* Byte 16-17: I2C Slave Address */ |
| 413 | acpigen_emit_word(i2c->address); |
| 414 | |
| 415 | /* Fill in Type Data Length */ |
| 416 | acpi_device_fill_len(type_length); |
| 417 | |
| 418 | /* Byte 18+: ResourceSource */ |
| 419 | acpigen_emit_string(i2c->resource); |
| 420 | |
| 421 | /* Fill in I2C Descriptor Length */ |
| 422 | acpi_device_fill_len(desc_length); |
| 423 | } |
Duncan Laurie | 70c86d9 | 2016-05-10 07:26:34 -0700 | [diff] [blame] | 424 | |
| 425 | /* ACPI 6.1 section 6.4.3.8.2.2 - SpiSerialBus() */ |
| 426 | void acpi_device_write_spi(const struct acpi_spi *spi) |
| 427 | { |
| 428 | void *desc_length, *type_length; |
| 429 | uint16_t flags = 0; |
| 430 | |
| 431 | /* Byte 0: Descriptor Type */ |
| 432 | acpigen_emit_byte(ACPI_DESCRIPTOR_SERIAL_BUS); |
| 433 | |
| 434 | /* Byte 1+2: Length (filled in later) */ |
| 435 | desc_length = acpi_device_write_zero_len(); |
| 436 | |
| 437 | /* Byte 3: Revision ID */ |
| 438 | acpigen_emit_byte(ACPI_SERIAL_BUS_REVISION_ID); |
| 439 | |
| 440 | /* Byte 4: Resource Source Index is Reserved */ |
| 441 | acpigen_emit_byte(0); |
| 442 | |
| 443 | /* Byte 5: Serial Bus Type is SPI */ |
| 444 | acpigen_emit_byte(ACPI_SERIAL_BUS_TYPE_SPI); |
| 445 | |
| 446 | /* |
| 447 | * Byte 6: Flags |
| 448 | * [7:2]: 0 => Reserved |
| 449 | * [1]: 1 => ResourceConsumer |
| 450 | * [0]: 0 => ControllerInitiated |
| 451 | */ |
| 452 | acpigen_emit_byte(1 << 1); |
| 453 | |
| 454 | /* |
| 455 | * Byte 7-8: Type Specific Flags |
| 456 | * [15:2]: 0 => Reserved |
| 457 | * [1]: 0 => ActiveLow, 1 => ActiveHigh |
| 458 | * [0]: 0 => FourWire, 1 => ThreeWire |
| 459 | */ |
| 460 | if (spi->wire_mode == SPI_3_WIRE_MODE) |
| 461 | flags |= 1 << 0; |
| 462 | if (spi->device_select_polarity == SPI_POLARITY_HIGH) |
| 463 | flags |= 1 << 1; |
| 464 | acpigen_emit_word(flags); |
| 465 | |
| 466 | /* Byte 9: Type Specific Revision ID */ |
| 467 | acpigen_emit_byte(ACPI_SERIAL_BUS_REVISION_ID); |
| 468 | |
| 469 | /* Byte 10-11: SPI Type Data Length */ |
| 470 | type_length = acpi_device_write_zero_len(); |
| 471 | |
| 472 | /* Byte 12-15: Connection Speed */ |
| 473 | acpigen_emit_dword(spi->speed); |
| 474 | |
| 475 | /* Byte 16: Data Bit Length */ |
| 476 | acpigen_emit_byte(spi->data_bit_length); |
| 477 | |
| 478 | /* Byte 17: Clock Phase */ |
| 479 | acpigen_emit_byte(spi->clock_phase); |
| 480 | |
| 481 | /* Byte 18: Clock Polarity */ |
| 482 | acpigen_emit_byte(spi->clock_polarity); |
| 483 | |
| 484 | /* Byte 19-20: Device Selection */ |
| 485 | acpigen_emit_word(spi->device_select); |
| 486 | |
| 487 | /* Fill in Type Data Length */ |
| 488 | acpi_device_fill_len(type_length); |
| 489 | |
| 490 | /* Byte 21+: ResourceSource String */ |
| 491 | acpigen_emit_string(spi->resource); |
| 492 | |
| 493 | /* Fill in SPI Descriptor Length */ |
| 494 | acpi_device_fill_len(desc_length); |
| 495 | } |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 496 | |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 497 | /* PowerResource() with Enable and/or Reset control */ |
Shelley Chen | a060339 | 2018-04-26 13:52:30 -0700 | [diff] [blame] | 498 | void acpi_device_add_power_res(const struct acpi_power_res_params *params) |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 499 | { |
Lee Leahy | 0b5678f | 2017-03-16 16:01:40 -0700 | [diff] [blame] | 500 | static const char *power_res_dev_states[] = { "_PR0", "_PR3" }; |
Shelley Chen | a060339 | 2018-04-26 13:52:30 -0700 | [diff] [blame] | 501 | unsigned int reset_gpio = params->reset_gpio->pins[0]; |
| 502 | unsigned int enable_gpio = params->enable_gpio->pins[0]; |
| 503 | unsigned int stop_gpio = params->stop_gpio->pins[0]; |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 504 | |
Furquan Shaikh | edf459f | 2017-08-28 17:20:49 -0700 | [diff] [blame] | 505 | if (!reset_gpio && !enable_gpio && !stop_gpio) |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 506 | return; |
| 507 | |
| 508 | /* PowerResource (PRIC, 0, 0) */ |
| 509 | acpigen_write_power_res("PRIC", 0, 0, power_res_dev_states, |
| 510 | ARRAY_SIZE(power_res_dev_states)); |
| 511 | |
| 512 | /* Method (_STA, 0, NotSerialized) { Return (0x1) } */ |
| 513 | acpigen_write_STA(0x1); |
| 514 | |
| 515 | /* Method (_ON, 0, Serialized) */ |
| 516 | acpigen_write_method_serialized("_ON", 0); |
| 517 | if (reset_gpio) |
Shelley Chen | a060339 | 2018-04-26 13:52:30 -0700 | [diff] [blame] | 518 | acpigen_enable_tx_gpio(params->reset_gpio); |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 519 | if (enable_gpio) { |
Shelley Chen | a060339 | 2018-04-26 13:52:30 -0700 | [diff] [blame] | 520 | acpigen_enable_tx_gpio(params->enable_gpio); |
| 521 | if (params->enable_delay_ms) |
| 522 | acpigen_write_sleep(params->enable_delay_ms); |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 523 | } |
| 524 | if (reset_gpio) { |
Shelley Chen | a060339 | 2018-04-26 13:52:30 -0700 | [diff] [blame] | 525 | acpigen_disable_tx_gpio(params->reset_gpio); |
| 526 | if (params->reset_delay_ms) |
| 527 | acpigen_write_sleep(params->reset_delay_ms); |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 528 | } |
Furquan Shaikh | edf459f | 2017-08-28 17:20:49 -0700 | [diff] [blame] | 529 | if (stop_gpio) { |
Shelley Chen | a060339 | 2018-04-26 13:52:30 -0700 | [diff] [blame] | 530 | acpigen_disable_tx_gpio(params->stop_gpio); |
| 531 | if (params->stop_delay_ms) |
| 532 | acpigen_write_sleep(params->stop_delay_ms); |
Furquan Shaikh | edf459f | 2017-08-28 17:20:49 -0700 | [diff] [blame] | 533 | } |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 534 | acpigen_pop_len(); /* _ON method */ |
| 535 | |
| 536 | /* Method (_OFF, 0, Serialized) */ |
| 537 | acpigen_write_method_serialized("_OFF", 0); |
Shelley Chen | a060339 | 2018-04-26 13:52:30 -0700 | [diff] [blame] | 538 | if (stop_gpio) { |
| 539 | acpigen_enable_tx_gpio(params->stop_gpio); |
| 540 | if (params->stop_off_delay_ms) |
| 541 | acpigen_write_sleep(params->stop_off_delay_ms); |
| 542 | } |
| 543 | if (reset_gpio) { |
| 544 | acpigen_enable_tx_gpio(params->reset_gpio); |
| 545 | if (params->reset_off_delay_ms) |
| 546 | acpigen_write_sleep(params->reset_off_delay_ms); |
| 547 | } |
| 548 | if (enable_gpio) { |
| 549 | acpigen_disable_tx_gpio(params->enable_gpio); |
| 550 | if (params->enable_off_delay_ms) |
| 551 | acpigen_write_sleep(params->enable_off_delay_ms); |
| 552 | } |
Duncan Laurie | bd73dbb | 2017-02-17 17:05:03 -0800 | [diff] [blame] | 553 | acpigen_pop_len(); /* _OFF method */ |
| 554 | |
| 555 | acpigen_pop_len(); /* PowerResource PRIC */ |
| 556 | } |
| 557 | |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 558 | static void acpi_dp_write_array(const struct acpi_dp *array); |
| 559 | static void acpi_dp_write_value(const struct acpi_dp *prop) |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 560 | { |
| 561 | switch (prop->type) { |
| 562 | case ACPI_DP_TYPE_INTEGER: |
| 563 | acpigen_write_integer(prop->integer); |
| 564 | break; |
| 565 | case ACPI_DP_TYPE_STRING: |
Harsha Priya | 3a96ac4 | 2016-07-15 17:31:43 -0700 | [diff] [blame] | 566 | case ACPI_DP_TYPE_CHILD: |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 567 | acpigen_write_string(prop->string); |
| 568 | break; |
| 569 | case ACPI_DP_TYPE_REFERENCE: |
| 570 | acpigen_emit_namestring(prop->string); |
| 571 | break; |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 572 | case ACPI_DP_TYPE_ARRAY: |
| 573 | acpi_dp_write_array(prop->array); |
| 574 | break; |
| 575 | default: |
| 576 | break; |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 577 | } |
| 578 | } |
| 579 | |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 580 | /* Package (2) { "prop->name", VALUE } */ |
| 581 | static void acpi_dp_write_property(const struct acpi_dp *prop) |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 582 | { |
| 583 | acpigen_write_package(2); |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 584 | acpigen_write_string(prop->name); |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 585 | acpi_dp_write_value(prop); |
| 586 | acpigen_pop_len(); |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | /* Write array of Device Properties */ |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 590 | static void acpi_dp_write_array(const struct acpi_dp *array) |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 591 | { |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 592 | const struct acpi_dp *dp; |
| 593 | char *pkg_count; |
| 594 | |
| 595 | /* Package element count determined as it is populated */ |
| 596 | pkg_count = acpigen_write_package(0); |
| 597 | |
Furquan Shaikh | 35c01bc | 2016-10-03 23:30:14 -0700 | [diff] [blame] | 598 | /* |
| 599 | * Only acpi_dp of type DP_TYPE_TABLE is allowed to be an array. |
| 600 | * DP_TYPE_TABLE does not have a value to be written. Thus, start |
| 601 | * the loop from next type in the array. |
| 602 | */ |
| 603 | for (dp = array->next; dp; dp = dp->next) { |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 604 | acpi_dp_write_value(dp); |
| 605 | (*pkg_count)++; |
| 606 | } |
| 607 | |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 608 | acpigen_pop_len(); |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 609 | } |
| 610 | |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 611 | static void acpi_dp_free(struct acpi_dp *dp) |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 612 | { |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 613 | while (dp) { |
| 614 | struct acpi_dp *p = dp->next; |
| 615 | |
| 616 | switch (dp->type) { |
| 617 | case ACPI_DP_TYPE_CHILD: |
| 618 | acpi_dp_free(dp->child); |
| 619 | break; |
| 620 | case ACPI_DP_TYPE_ARRAY: |
| 621 | acpi_dp_free(dp->array); |
| 622 | break; |
| 623 | default: |
| 624 | break; |
| 625 | } |
| 626 | |
| 627 | free(dp); |
| 628 | dp = p; |
| 629 | } |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 630 | } |
| 631 | |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 632 | void acpi_dp_write(struct acpi_dp *table) |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 633 | { |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 634 | struct acpi_dp *dp, *prop; |
Matt Delco | 0825888 | 2019-01-30 11:16:08 -0800 | [diff] [blame] | 635 | char *dp_count, *prop_count = NULL; |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 636 | int child_count = 0; |
| 637 | |
| 638 | if (!table || table->type != ACPI_DP_TYPE_TABLE) |
| 639 | return; |
| 640 | |
| 641 | /* Name (name) */ |
| 642 | acpigen_write_name(table->name); |
| 643 | |
| 644 | /* Device Property list starts with the next entry */ |
| 645 | prop = table->next; |
| 646 | |
Matt Delco | 0825888 | 2019-01-30 11:16:08 -0800 | [diff] [blame] | 647 | /* Package (DP), default to assuming no properties or children */ |
| 648 | dp_count = acpigen_write_package(0); |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 649 | |
| 650 | /* Print base properties */ |
| 651 | for (dp = prop; dp; dp = dp->next) { |
| 652 | if (dp->type == ACPI_DP_TYPE_CHILD) { |
| 653 | child_count++; |
| 654 | } else { |
Matt Delco | 0825888 | 2019-01-30 11:16:08 -0800 | [diff] [blame] | 655 | /* |
| 656 | * The UUID and package is only added when |
| 657 | * we come across the first property. This |
| 658 | * is to avoid creating a zero-length package |
| 659 | * in situations where there are only children. |
| 660 | */ |
| 661 | if (!prop_count) { |
| 662 | *dp_count += 2; |
| 663 | /* ToUUID (ACPI_DP_UUID) */ |
| 664 | acpigen_write_uuid(ACPI_DP_UUID); |
| 665 | /* |
| 666 | * Package (PROP), element count determined as |
| 667 | * it is populated |
| 668 | */ |
| 669 | prop_count = acpigen_write_package(0); |
| 670 | } |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 671 | (*prop_count)++; |
| 672 | acpi_dp_write_property(dp); |
| 673 | } |
| 674 | } |
Matt Delco | 0825888 | 2019-01-30 11:16:08 -0800 | [diff] [blame] | 675 | if (prop_count) { |
| 676 | /* Package (PROP) length, if a package was written */ |
| 677 | acpigen_pop_len(); |
| 678 | } |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 679 | |
| 680 | if (child_count) { |
Matt Delco | 0825888 | 2019-01-30 11:16:08 -0800 | [diff] [blame] | 681 | /* Update DP package count to 2 or 4 */ |
| 682 | *dp_count += 2; |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 683 | /* ToUUID (ACPI_DP_CHILD_UUID) */ |
| 684 | acpigen_write_uuid(ACPI_DP_CHILD_UUID); |
| 685 | |
| 686 | /* Print child pointer properties */ |
| 687 | acpigen_write_package(child_count); |
| 688 | |
| 689 | for (dp = prop; dp; dp = dp->next) |
| 690 | if (dp->type == ACPI_DP_TYPE_CHILD) |
| 691 | acpi_dp_write_property(dp); |
Matt Delco | 0825888 | 2019-01-30 11:16:08 -0800 | [diff] [blame] | 692 | /* Package (CHILD) length */ |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 693 | acpigen_pop_len(); |
| 694 | } |
| 695 | |
| 696 | /* Package (DP) length */ |
| 697 | acpigen_pop_len(); |
| 698 | |
| 699 | /* Recursively parse children into separate tables */ |
| 700 | for (dp = prop; dp; dp = dp->next) |
| 701 | if (dp->type == ACPI_DP_TYPE_CHILD) |
| 702 | acpi_dp_write(dp->child); |
| 703 | |
| 704 | /* Clean up */ |
| 705 | acpi_dp_free(table); |
| 706 | } |
| 707 | |
| 708 | static struct acpi_dp *acpi_dp_new(struct acpi_dp *dp, enum acpi_dp_type type, |
| 709 | const char *name) |
| 710 | { |
| 711 | struct acpi_dp *new; |
| 712 | |
| 713 | new = malloc(sizeof(struct acpi_dp)); |
| 714 | if (!new) |
| 715 | return NULL; |
| 716 | |
| 717 | memset(new, 0, sizeof(*new)); |
| 718 | new->type = type; |
| 719 | new->name = name; |
| 720 | |
| 721 | if (dp) { |
| 722 | /* Add to end of property list */ |
| 723 | while (dp->next) |
| 724 | dp = dp->next; |
| 725 | dp->next = new; |
| 726 | } |
| 727 | |
| 728 | return new; |
| 729 | } |
| 730 | |
| 731 | struct acpi_dp *acpi_dp_new_table(const char *name) |
| 732 | { |
| 733 | return acpi_dp_new(NULL, ACPI_DP_TYPE_TABLE, name); |
| 734 | } |
| 735 | |
Duncan Laurie | b3023b6 | 2017-08-29 08:26:50 -0700 | [diff] [blame] | 736 | size_t acpi_dp_add_property_list(struct acpi_dp *dp, |
| 737 | const struct acpi_dp *property_list, |
| 738 | size_t property_count) |
| 739 | { |
| 740 | const struct acpi_dp *prop; |
| 741 | size_t i, properties_added = 0; |
| 742 | |
| 743 | for (i = 0; i < property_count; i++) { |
| 744 | prop = &property_list[i]; |
| 745 | |
| 746 | if (prop->type == ACPI_DP_TYPE_UNKNOWN || !prop->name) |
| 747 | continue; |
| 748 | |
| 749 | switch (prop->type) { |
| 750 | case ACPI_DP_TYPE_INTEGER: |
| 751 | acpi_dp_add_integer(dp, prop->name, prop->integer); |
| 752 | break; |
| 753 | case ACPI_DP_TYPE_STRING: |
| 754 | acpi_dp_add_string(dp, prop->name, prop->string); |
| 755 | break; |
| 756 | case ACPI_DP_TYPE_REFERENCE: |
| 757 | acpi_dp_add_reference(dp, prop->name, prop->string); |
| 758 | break; |
| 759 | case ACPI_DP_TYPE_ARRAY: |
| 760 | acpi_dp_add_array(dp, prop->array); |
| 761 | break; |
| 762 | case ACPI_DP_TYPE_CHILD: |
| 763 | acpi_dp_add_child(dp, prop->name, prop->child); |
| 764 | break; |
| 765 | default: |
| 766 | continue; |
| 767 | } |
| 768 | |
| 769 | ++properties_added; |
| 770 | } |
| 771 | |
| 772 | return properties_added; |
| 773 | } |
| 774 | |
Duncan Laurie | ffc9990 | 2016-07-02 19:56:06 -0700 | [diff] [blame] | 775 | struct acpi_dp *acpi_dp_add_integer(struct acpi_dp *dp, const char *name, |
| 776 | uint64_t value) |
| 777 | { |
| 778 | struct acpi_dp *new = acpi_dp_new(dp, ACPI_DP_TYPE_INTEGER, name); |
| 779 | |
| 780 | if (new) |
| 781 | new->integer = value; |
| 782 | |
| 783 | return new; |
| 784 | } |
| 785 | |
| 786 | struct acpi_dp *acpi_dp_add_string(struct acpi_dp *dp, const char *name, |
| 787 | const char *string) |
| 788 | { |
| 789 | struct acpi_dp *new = acpi_dp_new(dp, ACPI_DP_TYPE_STRING, name); |
| 790 | |
| 791 | if (new) |
| 792 | new->string = string; |
| 793 | |
| 794 | return new; |
| 795 | } |
| 796 | |
| 797 | struct acpi_dp *acpi_dp_add_reference(struct acpi_dp *dp, const char *name, |
| 798 | const char *reference) |
| 799 | { |
| 800 | struct acpi_dp *new = acpi_dp_new(dp, ACPI_DP_TYPE_REFERENCE, name); |
| 801 | |
| 802 | if (new) |
| 803 | new->string = reference; |
| 804 | |
| 805 | return new; |
| 806 | } |
| 807 | |
| 808 | struct acpi_dp *acpi_dp_add_child(struct acpi_dp *dp, const char *name, |
| 809 | struct acpi_dp *child) |
| 810 | { |
| 811 | struct acpi_dp *new; |
| 812 | |
| 813 | if (!child || child->type != ACPI_DP_TYPE_TABLE) |
| 814 | return NULL; |
| 815 | |
| 816 | new = acpi_dp_new(dp, ACPI_DP_TYPE_CHILD, name); |
| 817 | if (new) { |
| 818 | new->child = child; |
| 819 | new->string = child->name; |
| 820 | } |
| 821 | |
| 822 | return new; |
| 823 | } |
| 824 | |
| 825 | struct acpi_dp *acpi_dp_add_array(struct acpi_dp *dp, struct acpi_dp *array) |
| 826 | { |
| 827 | struct acpi_dp *new; |
| 828 | |
| 829 | if (!array || array->type != ACPI_DP_TYPE_TABLE) |
| 830 | return NULL; |
| 831 | |
| 832 | new = acpi_dp_new(dp, ACPI_DP_TYPE_ARRAY, array->name); |
| 833 | if (new) |
| 834 | new->array = array; |
| 835 | |
| 836 | return new; |
| 837 | } |
| 838 | |
| 839 | struct acpi_dp *acpi_dp_add_integer_array(struct acpi_dp *dp, const char *name, |
| 840 | uint64_t *array, int len) |
| 841 | { |
| 842 | struct acpi_dp *dp_array; |
| 843 | int i; |
| 844 | |
| 845 | if (len <= 0) |
| 846 | return NULL; |
| 847 | |
| 848 | dp_array = acpi_dp_new_table(name); |
| 849 | if (!dp_array) |
| 850 | return NULL; |
| 851 | |
| 852 | for (i = 0; i < len; i++) |
| 853 | if (!acpi_dp_add_integer(dp_array, NULL, array[i])) |
| 854 | break; |
| 855 | |
| 856 | acpi_dp_add_array(dp, dp_array); |
| 857 | |
| 858 | return dp_array; |
| 859 | } |
| 860 | |
| 861 | struct acpi_dp *acpi_dp_add_gpio(struct acpi_dp *dp, const char *name, |
| 862 | const char *ref, int index, int pin, |
| 863 | int active_low) |
| 864 | { |
| 865 | struct acpi_dp *gpio = acpi_dp_new_table(name); |
| 866 | |
| 867 | if (!gpio) |
| 868 | return NULL; |
| 869 | |
| 870 | /* The device that has _CRS containing GpioIO()/GpioInt() */ |
| 871 | acpi_dp_add_reference(gpio, NULL, ref); |
| 872 | |
| 873 | /* Index of the GPIO resource in _CRS starting from zero */ |
| 874 | acpi_dp_add_integer(gpio, NULL, index); |
| 875 | |
| 876 | /* Pin in the GPIO resource, typically zero */ |
| 877 | acpi_dp_add_integer(gpio, NULL, pin); |
| 878 | |
| 879 | /* Set if pin is active low */ |
| 880 | acpi_dp_add_integer(gpio, NULL, active_low); |
| 881 | |
| 882 | acpi_dp_add_array(dp, gpio); |
| 883 | |
| 884 | return gpio; |
Duncan Laurie | 559e947 | 2016-05-10 13:18:17 -0700 | [diff] [blame] | 885 | } |