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dm: core: Add an ACPI name for the root node

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This always has a fixed ACPI name so add it as a driver function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-07-07 13:11:38 -06:00 • committed by Bin Meng
parent 0990c894cc
commit 4b724a1377
1 changed files with 13 additions and 0 deletions
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13
drivers/core/root.c
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@ -12,6 +12,7 @@
#include <log.h> #include <log.h>
#include <malloc.h> #include <malloc.h>
#include <linux/libfdt.h> #include <linux/libfdt.h>
#include <dm/acpi.h>
#include <dm/device.h> #include <dm/device.h>
#include <dm/device-internal.h> #include <dm/device-internal.h>
#include <dm/lists.h> #include <dm/lists.h>
@ -377,10 +378,22 @@ int dm_init_and_scan(bool pre_reloc_only)
return 0; return 0;
} }
#ifdef CONFIG_ACPIGEN
static int root_acpi_get_name(const struct udevice *dev, char *out_name)
{
return acpi_copy_name(out_name, "\\_SB");
}
struct acpi_ops root_acpi_ops = {
.get_name = root_acpi_get_name,
};
#endif
/* This is the root driver - all drivers are children of this */ /* This is the root driver - all drivers are children of this */
U_BOOT_DRIVER(root_driver) = { U_BOOT_DRIVER(root_driver) = {
.name = "root_driver", .name = "root_driver",
.id = UCLASS_ROOT, .id = UCLASS_ROOT,
ACPI_OPS_PTR(&root_acpi_ops)
}; };
/* This is the root uclass */ /* This is the root uclass */