src/vendorcode/google/chromeos/acpi.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpigen.h>
   4 #if CONFIG(GENERIC_GPIO_LIB)
   5 #include <gpio.h>
   6 #endif
   7 #include "chromeos.h"
   8
   9 void chromeos_acpi_gpio_generate(void)
  10 {
  11         const struct cros_gpio *gpios;
  12         size_t i, num;
  13         int gpio_num;
  14
  15         num = variant_cros_gpio.count;
  16         gpios = variant_cros_gpio.gpios;
  17         if (num && !gpios)
  18                 return;
  19
  20         acpigen_write_scope("\\");
  21         acpigen_write_name("OIPG");
  22
  23         acpigen_write_package(num);
  24         for (i = 0; i < num; i++) {
  25                 acpigen_write_package(4);
  26                 acpigen_write_integer(gpios[i].type);
  27                 acpigen_write_integer(gpios[i].polarity);
  28                 gpio_num = gpios[i].gpio_num;
  29 #if CONFIG(GENERIC_GPIO_LIB)
  30                 /* Get ACPI pin from GPIO library if available */
  31                 if (gpios[i].gpio_num != CROS_GPIO_VIRTUAL)
  32                         gpio_num = gpio_acpi_pin(gpio_num);
  33 #endif
  34                 acpigen_write_integer(gpio_num);
  35                 acpigen_write_string(gpios[i].device);
  36                 acpigen_pop_len();
  37         }
  38         acpigen_pop_len();
  39
  40         acpigen_pop_len();
  41 }