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authorKane Chen <kane.chen@intel.com>2022-12-12 13:15:03 +0800
committerEric Lai <eric_lai@quanta.corp-partner.google.com>2023-01-19 05:58:33 +0000
commit56e448b8d5079e418d1be56c31a8e82bf5b95566 (patch)
tree4f94e685564b470d72ad03964c9eb7fcd5eb8083 /src/acpi
parent56d831392566713ba416b822cf2416a6d78a51ae (diff)
drivers/usb/acpi: Add USB _DSM method to enable/disable USB LPM per port
This patch supports projects to use _DSM to control USB3 U1/U2 transition per port. More details can be found in https://web.archive.org/web/20230116084819/https://learn.microsoft.com/en-us/windows-hardware/drivers/bringup/usb-device-specific-method---dsm- The ACPI and USB driver of linux kernel need corresponding functions to support this feature. Please see https://git.kernel.org/pub/scm/linux/kernel/git/mnyman/xhci.git/log/?h=port_check_acpi_dsm BUG=b:253402457 TEST=tested on felwinter and found _DSM method is created. Change-Id: Iffb2498e26352a3f120c097c50587324e311e8ba Signed-off-by: Kane Chen <kane.chen@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/71924 Reviewed-by: Kapil Porwal <kapilporwal@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Diffstat (limited to 'src/acpi')
-rw-r--r--src/acpi/acpigen_dsm.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/acpi/acpigen_dsm.c b/src/acpi/acpigen_dsm.c
index 734fbd5cfb..d51d643c7e 100644
--- a/src/acpi/acpigen_dsm.c
+++ b/src/acpi/acpigen_dsm.c
@@ -47,3 +47,26 @@ void acpigen_write_dsm_i2c_hid(struct dsm_i2c_hid_config *config)
}
/* ------------------- End: I2C HID DSM ------------------------- */
+
+#define USB_DSM_UUID "CE2EE385-00E6-48CB-9F05-2EDB927C4899"
+
+static void usb_dsm_func5_cb(void *arg)
+{
+ struct dsm_usb_config *config = arg;
+ acpigen_write_return_byte(config->usb_lpm_incapable);
+}
+
+static void (*usb_dsm_callbacks[6])(void *) = {
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ usb_dsm_func5_cb,
+};
+
+void acpigen_write_dsm_usb(struct dsm_usb_config *config)
+{
+ acpigen_write_dsm(USB_DSM_UUID, usb_dsm_callbacks,
+ ARRAY_SIZE(usb_dsm_callbacks), config);
+}