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drivers/usb/acpi: Add DSM for Intel Bluetooth

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Add support for creating a DSM Method for Intel Bluetooth that
is outlined in Intel's connectivity integrated guide (which has
no document number).

It supports two GUIDs:

Set Tile Activaction (2d19d3e1-5708-4696-bd5b-2c3dbae2d6a9)
BIT(0)  Indicates whether the device supports other functions
BIT(1)  Set Tile Activation

Check/Set Reset Delay (aa10f4e0-81ac-4233-abf6-3b2ac50e28d9)
BIT(0)  Indicates whether the device supports other functions
BIT(1)  Set Bluetooth reset timing

Change-Id: Icc18f867604876b27ced2ee4356e47b3aa6b4f74
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84133
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Sean Rhodes 2024-08-29 20:19:39 +01:00 • committed by Felix Held
commit 5665bcac4f
2 changed files with 129 additions and 0 deletions
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3
src/drivers/usb/acpi/chip.h
View file

@ -47,6 +47,9 @@ struct drivers_usb_acpi_config {
/* Does the device have a power resource? */
bool has_power_resource;
/* Intel Bluetooth */
bool is_intel_bluetooth;
/* GPIO used to take device out of reset or to put it into reset. */
struct acpi_gpio reset_gpio;
/* Delay to be inserted after device is taken out of reset. */

126
src/drivers/usb/acpi/usb_acpi.c
View file

@ -8,6 +8,129 @@
#include <device/device.h>
#include "chip.h"
/*
* Intel Bluetooth DSM
*
* Check Tile Activation (2d19d3e1-5708-4696-bd5b-2c3dbae2d6a9)
*
* Arg2 == 0: Return a package with the following bits set
* BIT(0) Indicates whether the device supports other functions
* BIT(1) Check Tile Activation
*
* Check/Set Reset Delay (aa10f4e0-81ac-4233-abf6-3b2ac50e28d9)
* Arg2 == 0: Return a package with the following bit set
* BIT(0) Indicates whether the device supports other functions
* BIT(1) Check Bluetooth reset timing
* Arg2 == 1: Set the reset delay based on Arg3
*/
static void check_reset_delay(void *arg)
{
acpigen_write_if_lequal_op_int(ARG1_OP, 0);
{
acpigen_write_return_singleton_buffer(0x03);
}
acpigen_write_else();
{
acpigen_write_return_singleton_buffer(0x00);
}
acpigen_pop_len();
}
static void set_reset_delay(void *arg)
{
acpigen_write_store_op_to_namestr(ARG3_OP, "RDLY");
}
static void get_feature_flag(void *arg)
{
acpigen_write_if_lequal_op_int(ARG1_OP, 0);
{
acpigen_write_return_singleton_buffer(0x03);
}
acpigen_write_else();
{
acpigen_write_return_singleton_buffer(0x00);
}
acpigen_pop_len();
}
void (*uuid_callbacks1[])(void *) = { check_reset_delay, set_reset_delay };
void (*uuid_callbacks2[])(void *) = { get_feature_flag };
static void acpi_device_intel_bt(void)
{
/*
* Name (RDLY, 0x69)
*/
acpigen_write_name_integer("RDLY", 0x69);
/*
* Method (_DSM, 4, Serialized)
* {
* If ((Arg0 == ToUUID ("aa10f4e0-81ac-4233-abf6-3b2ac50e28d9")))
* {
* If ((Arg2 == Zero))
* {
* If ((Arg1 == Zero))
* {
* Return (Buffer (One)
* {
* 0x03
* })
* }
* Else
* {
* Return (Buffer (One)
* {
* 0x00
* })
* }
* }
* If ((Arg2 == One))
* {
* RDLY = Arg3
* }
* Return (Zero)
* }
* ElseIf ((Arg0 == ToUUID ("2d19d3e1-5708-4696-bd5b-2c3dbae2d6a9")))
* {
* If ((Arg2 == Zero))
* {
* If ((Arg1 == Zero))
* {
* Return (Buffer (One)
* {
* 0x00
* })
* }
* Else
* {
* Return (Buffer (One)
* {
* 0x00
* })
* }
* }
* Return (Zero)
* }
* Else
* {
* Return (Buffer (One)
* {
* 0x00
* })
* }
* }
*/
struct dsm_uuid uuid_callbacks[] = {
DSM_UUID("aa10f4e0-81ac-4233-abf6-3b2ac50e28d9", uuid_callbacks1, 2, NULL),
DSM_UUID("2d19d3e1-5708-4696-bd5b-2c3dbae2d6a9", uuid_callbacks2, 1, NULL),
};
acpigen_write_dsm_uuid_arr(uuid_callbacks, ARRAY_SIZE(uuid_callbacks));
}
static bool usb_acpi_add_gpios_to_crs(struct drivers_usb_acpi_config *cfg)
{
if (cfg->privacy_gpio.pin_count)
@ -107,6 +230,9 @@ static void usb_acpi_fill_ssdt_generator(const struct device *dev)
acpi_device_add_power_res(&power_res_params);
}
if (config->is_intel_bluetooth)
acpi_device_intel_bt();
acpigen_pop_len();
printk(BIOS_INFO, "%s: %s at %s\n", path,