diff options
| author | Zong-Zhe Yang <kevin_yang@realtek.com> | 2023-05-08 16:12:09 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2023-05-11 16:19:16 +0300 |
| commit | e897b0bef38a8b40101c0e6e009395506c256460 (patch) | |
| tree | e2fcc20dde6791ab9187d01d9b67b1b29464f872 /drivers | |
| parent | d9aef04fcfa81ee4fb2804a21a3712b7bbd936af (diff) | |
wifi: rtw89: introduce realtek ACPI DSM method
Introduce realtek ACPI DSM method to get required BIOS
configurations. It will be used in the following commits.
And, enum rtw89_acpi_dsm_func is added for listing the functions
which are currently recognized.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230508081211.38760-2-pkshih@realtek.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/Makefile | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/acpi.c | 52 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/acpi.h | 21 |
3 files changed, 75 insertions, 1 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/Makefile b/drivers/net/wireless/realtek/rtw89/Makefile index 2dc48fa10c6b..99e870d6a7d7 100644 --- a/drivers/net/wireless/realtek/rtw89/Makefile +++ b/drivers/net/wireless/realtek/rtw89/Makefile @@ -13,7 +13,8 @@ rtw89_core-y += core.o \ coex.o \ ps.o \ chan.o \ - ser.o + ser.o \ + acpi.o rtw89_core-$(CONFIG_PM) += wow.o diff --git a/drivers/net/wireless/realtek/rtw89/acpi.c b/drivers/net/wireless/realtek/rtw89/acpi.c new file mode 100644 index 000000000000..8aaf83a2a6b4 --- /dev/null +++ b/drivers/net/wireless/realtek/rtw89/acpi.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* Copyright(c) 2021-2023 Realtek Corporation + */ + +#include <linux/acpi.h> +#include <linux/uuid.h> + +#include "acpi.h" +#include "debug.h" + +static const guid_t rtw89_guid = GUID_INIT(0xD2A8C3E8, 0x4B69, 0x4F00, + 0x82, 0xBD, 0xFE, 0x86, + 0x07, 0x80, 0x3A, 0xA7); + +static int rtw89_acpi_dsm_get(struct rtw89_dev *rtwdev, union acpi_object *obj, + u8 *value) +{ + switch (obj->type) { + case ACPI_TYPE_INTEGER: + *value = (u8)obj->integer.value; + break; + case ACPI_TYPE_BUFFER: + *value = obj->buffer.pointer[0]; + break; + default: + rtw89_debug(rtwdev, RTW89_DBG_UNEXP, + "acpi dsm return unhandled type: %d\n", obj->type); + return -EINVAL; + } + + return 0; +} + +int rtw89_acpi_evaluate_dsm(struct rtw89_dev *rtwdev, + enum rtw89_acpi_dsm_func func, u8 *value) +{ + union acpi_object *obj; + int ret; + + obj = acpi_evaluate_dsm(ACPI_HANDLE(rtwdev->dev), &rtw89_guid, + 0, func, NULL); + if (!obj) { + rtw89_debug(rtwdev, RTW89_DBG_UNEXP, + "acpi dsm fail to evaluate func: %d\n", func); + return -ENOENT; + } + + ret = rtw89_acpi_dsm_get(rtwdev, obj, value); + + ACPI_FREE(obj); + return ret; +} diff --git a/drivers/net/wireless/realtek/rtw89/acpi.h b/drivers/net/wireless/realtek/rtw89/acpi.h new file mode 100644 index 000000000000..ed74d8ceb733 --- /dev/null +++ b/drivers/net/wireless/realtek/rtw89/acpi.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* Copyright(c) 2021-2023 Realtek Corporation + */ + +#ifndef __RTW89_ACPI_H__ +#define __RTW89_ACPI_H__ + +#include "core.h" + +enum rtw89_acpi_dsm_func { + RTW89_ACPI_DSM_FUNC_IDN_BAND_SUP = 2, + RTW89_ACPI_DSM_FUNC_6G_DIS = 3, + RTW89_ACPI_DSM_FUNC_6G_BP = 4, + RTW89_ACPI_DSM_FUNC_TAS_EN = 5, + RTW89_ACPI_DSM_FUNC_59G_EN = 6, +}; + +int rtw89_acpi_evaluate_dsm(struct rtw89_dev *rtwdev, + enum rtw89_acpi_dsm_func func, u8 *value); + +#endif |