src/ec/google/chromeec/mux/mux.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <acpi/acpigen.h>
   4
   5 #define GOOGLE_CHROMEEC_MUX_DEVICE_HID          "GOOG001A"
   6 #define GOOGLE_CHROMEEC_MUX_DEVICE_NAME         "ECMX"
   7
   8 static void mux_fill_ssdt(const struct device *dev)
   9 {
  10         acpigen_write_scope(acpi_device_scope(dev));
  11         acpigen_write_device(GOOGLE_CHROMEEC_MUX_DEVICE_NAME);
  12         acpigen_write_name_string("_HID", GOOGLE_CHROMEEC_MUX_DEVICE_HID);
  13         acpigen_write_name_string("_DDN", "ChromeOS EC Embedded Controller "
  14                                   "Mux & Retimer control");
  15
  16         acpigen_write_device_end();
  17         acpigen_write_scope_end();
  18 }
  19
  20 static const char *mux_acpi_name(const struct device *dev)
  21 {
  22         return GOOGLE_CHROMEEC_MUX_DEVICE_NAME;
  23 }
  24
  25 static struct device_operations mux_ops = {
  26         .read_resources         = noop_read_resources,
  27         .set_resources          = noop_set_resources,
  28         .acpi_name              = mux_acpi_name,
  29         .acpi_fill_ssdt         = mux_fill_ssdt,
  30         .scan_bus               = scan_static_bus,
  31 };
  32
  33 static void mux_enable(struct device *dev)
  34 {
  35         dev->ops = &mux_ops;
  36 }
  37
  38 struct chip_operations ec_google_chromeec_mux_ops = {
  39         .name = "CrosEC Type C Mux device",
  40         .enable_dev = mux_enable
  41 };