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drivers/usb/acpi: Add AOLD Method for Intel Bluetooth

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Add AOLD Method, which returns an integer based on
whether Audio Offload is enabled. Leave the existing
control of Audio Offload in `soc/soc_chip.h`. Add
`cnvi_bt_audio_offload` in the USB ACPI `chip.h` to
control the aforementioned return value.

The value in `soc/soc_chip.h` and `chip.h` should
match.

Change-Id: Idb804fb1cf0edef4a98479a6261ca68255dbf075
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84134
Reviewed-by: Nicholas Sudsgaard <devel+coreboot@nsudsgaard.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Sean Rhodes 2024-08-29 20:29:44 +01:00 • committed by Martin L Roth
commit 229d8fa286
3 changed files with 32 additions and 3 deletions
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3
src/drivers/usb/acpi/chip.h
View file

@ -49,6 +49,7 @@ struct drivers_usb_acpi_config {
/* Intel Bluetooth */
bool is_intel_bluetooth;
bool cnvi_bt_audio_offload;
/* GPIO used to take device out of reset or to put it into reset. */
struct acpi_gpio reset_gpio;
@ -87,7 +88,7 @@ struct drivers_usb_acpi_config {
bool usb_acpi_get_pld(const struct device *usb_device, struct acpi_pld *pld);
/* Intel Bluetooth */
void acpi_device_intel_bt(unsigned int reset_gpio);
void acpi_device_intel_bt(unsigned int reset_gpio, bool audio_offload);
void acpi_device_intel_bt_common(void);
#endif /* __USB_ACPI_CHIP_H__ */

30
src/drivers/usb/acpi/intel_bluetooth.c
View file

@ -53,7 +53,7 @@ static void get_feature_flag(void *arg)
void (*uuid_callbacks1[])(void *) = { check_reset_delay, set_reset_delay };
void (*uuid_callbacks2[])(void *) = { get_feature_flag };
void acpi_device_intel_bt(unsigned int reset_gpio)
void acpi_device_intel_bt(unsigned int reset_gpio, bool audio_offload)
{
/*
* Name (RDLY, 0x69)
@ -231,6 +231,34 @@ void acpi_device_intel_bt(unsigned int reset_gpio)
acpigen_emit_namestring("BTRT");
}
acpigen_pop_len();
/*
* Method (AOLD, 0, Serialized)
* {
* Name (AODS, Package (0x03)
* {
* Zero,
* 0x12,
* Zero // Audio Offload - 0: Disabled
* 1: Enabled
* })
* Return (AODS)
* }
*/
acpigen_write_method_serialized("AOLD", 0);
{
acpigen_write_name("AODS");
acpigen_write_package(3);
{
acpigen_write_integer(0);
acpigen_write_integer(0x12);
acpigen_write_integer(audio_offload);
}
acpigen_pop_len();
acpigen_write_return_namestr("AODS");
}
acpigen_pop_len();
}
void acpi_device_intel_bt_common(void)

2
src/drivers/usb/acpi/usb_acpi.c
View file

@ -108,7 +108,7 @@ static void usb_acpi_fill_ssdt_generator(const struct device *dev)
}
if (config->is_intel_bluetooth)
acpi_device_intel_bt(config->reset_gpio.pins[0]);
acpi_device_intel_bt(config->reset_gpio.pins[0], config->cnvi_bt_audio_offload);
acpigen_pop_len();