Commit e897b0be authored by Zong-Zhe Yang's avatar Zong-Zhe Yang Committed by Kalle Valo
Browse files

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: default avatarZong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: default avatarPing-Ke Shih <pkshih@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230508081211.38760-2-pkshih@realtek.com
parent d9aef04f

drivers/net/wireless/realtek/rtw89/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -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

drivers/net/wireless/realtek/rtw89/acpi.c

0 → 100644
+52 −0
Original line number Diff line number Diff line 
// 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;

}

drivers/net/wireless/realtek/rtw89/acpi.h

0 → 100644
+21 −0
Original line number Diff line number Diff line 
/* 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