src/soc/amd/common/block/emmc/emmc.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpigen.h>
   4 #include <amdblocks/aoac.h>
   5 #include <device/device.h>
   6 #include <soc/aoac_defs.h>
   7
   8 static void emmc_read_resources(struct device *dev)
   9 {
  10         mmio_range(dev, 0, dev->path.mmio.addr, 4 * KiB);
  11 }
  12
  13 static void emmc_enable(struct device *dev)
  14 {
  15         if (!dev->enabled && !CONFIG(SOC_AMD_COMMON_BLOCK_EMMC_SKIP_POWEROFF))
  16                 power_off_aoac_device(FCH_AOAC_DEV_EMMC);
  17 }
  18
  19 static const char *emmc_acpi_name(const struct device *dev)
  20 {
  21         return "MMC0";
  22 }
  23
  24 static void emmc_acpi_fill_ssdt(const struct device *dev)
  25 {
  26         acpigen_write_scope(acpi_device_path(dev));
  27         acpigen_write_store_int_to_namestr(acpi_device_status(dev), "STAT");
  28         acpigen_pop_len(); /* Scope */
  29 }
  30
  31 struct device_operations amd_emmc_mmio_ops = {
  32         .read_resources = emmc_read_resources,
  33         .set_resources = noop_set_resources,
  34         .scan_bus = scan_static_bus,
  35         .enable = emmc_enable,
  36         .acpi_name = emmc_acpi_name,
  37         .acpi_fill_ssdt = emmc_acpi_fill_ssdt,
  38 };