From patchwork Thu Oct 19 03:05:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ai Chao X-Patchwork-Id: 13428208 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00171CDB47E for ; Thu, 19 Oct 2023 03:05:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231470AbjJSDF7 (ORCPT ); Wed, 18 Oct 2023 23:05:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232492AbjJSDF6 (ORCPT ); Wed, 18 Oct 2023 23:05:58 -0400 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBE349F; Wed, 18 Oct 2023 20:05:55 -0700 (PDT) X-UUID: 58ad13f757eb40448adcceab124fda2c-20231019 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.32,REQID:5ab4bded-b106-4a26-a538-407c74f03a00,IP:15, URL:0,TC:0,Content:-5,EDM:25,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,AC TION:release,TS:20 X-CID-INFO: VERSION:1.1.32,REQID:5ab4bded-b106-4a26-a538-407c74f03a00,IP:15,UR L:0,TC:0,Content:-5,EDM:25,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:20 X-CID-META: VersionHash:5f78ec9,CLOUDID:b4a01ac0-14cc-44ca-b657-2d2783296e72,B ulkID:231019110546LRCLYHZO,BulkQuantity:0,Recheck:0,SF:19|44|66|38|24|17|1 02,TC:nil,Content:0,EDM:5,IP:-2,URL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL :0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_FSI,TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD X-UUID: 58ad13f757eb40448adcceab124fda2c-20231019 X-User: aichao@kylinos.cn Received: from localhost.localdomain [(112.64.161.44)] by mailgw (envelope-from ) (Generic MTA) with ESMTP id 104807895; Thu, 19 Oct 2023 11:05:43 +0800 From: Ai Chao To: hdegoede@redhat.com, ilpo.jarvinen@linux.intel.com, markgross@kernel.org Cc: linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, Ai Chao Subject: [PATCH v4] platform/x86: inspur-wmi: Add platform profile support Date: Thu, 19 Oct 2023 11:05:34 +0800 Message-Id: <20231019030534.157971-1-aichao@kylinos.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org Add support for Inspur platforms to used the platform profile feature. This will allow users to determine and control the platform modes between low-power, balanced and performance modes. Signed-off-by: Ai Chao --- v4: Add select ACPI_PLATFORM_PROFILE v3: Remove input device, using the platform profile interface v2: Remove Event GUID, remove inspur_wmi_notify and inspur_wmi_notify. drivers/platform/x86/Kconfig | 11 ++ drivers/platform/x86/Makefile | 3 + drivers/platform/x86/inspur-wmi.c | 216 ++++++++++++++++++++++++++++++ 3 files changed, 230 insertions(+) create mode 100644 drivers/platform/x86/inspur-wmi.c diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 2a1070543391..44f371876170 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -988,6 +988,17 @@ config TOUCHSCREEN_DMI the OS-image for the device. This option supplies the missing info. Enable this for x86 tablets with Silead or Chipone touchscreens. +config INSPUR_WMI + tristate "Inspur WMI platform profile driver" + depends on ACPI_WMI + select ACPI_PLATFORM_PROFILE + help + This will allow users to determine and control the platform modes + between low-power, balanced and performance modes. + + To compile this driver as a module, choose M here: the module + will be called inspur-wmi. + source "drivers/platform/x86/x86-android-tablets/Kconfig" config FW_ATTR_CLASS diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index b457de5abf7d..9285c252757e 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -98,6 +98,9 @@ obj-$(CONFIG_TOSHIBA_WMI) += toshiba-wmi.o # before toshiba_acpi initializes obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o +# Inspur +obj-$(CONFIG_INSPUR_WMI) += inspur-wmi.o + # Laptop drivers obj-$(CONFIG_ACPI_CMPC) += classmate-laptop.o obj-$(CONFIG_COMPAL_LAPTOP) += compal-laptop.o diff --git a/drivers/platform/x86/inspur-wmi.c b/drivers/platform/x86/inspur-wmi.c new file mode 100644 index 000000000000..243f31dd162c --- /dev/null +++ b/drivers/platform/x86/inspur-wmi.c @@ -0,0 +1,216 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Inspur WMI power mode + * + * Copyright (C) 2018 Ai Chao + */ + +#include +#include +#include +#include +#include + +#define WMI_INSPUR_POWERMODE_BIOS_GUID "596C31E3-332D-43C9-AEE9-585493284F5D" + +enum inspur_wmi_method_ids { + INSPUR_WMI_GET_POWERMODE = 0x02, + INSPUR_WMI_SET_POWERMODE = 0x03, +}; + +/** + * Power Mode: + * 0x0: Balance Mode + * 0x1: Performance Mode + * 0x2: Power Saver Mode + */ +enum inspur_tmp_profile { + INSPUR_TMP_PROFILE_BALANCE = 0, + INSPUR_TMP_PROFILE_PERFORMANCE = 1, + INSPUR_TMP_PROFILE_POWERSAVE = 2, +}; + +struct inspur_wmi_priv { + struct wmi_device *wdev; + struct platform_profile_handler handler; +}; + +static int inspur_wmi_perform_query(struct wmi_device *wdev, + enum inspur_wmi_method_ids query_id, + void *buffer, size_t insize, + size_t outsize) +{ + struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_buffer input = { insize, buffer}; + union acpi_object *obj; + acpi_status status; + int ret = 0; + + status = wmidev_evaluate_method(wdev, 0, query_id, &input, &output); + if (ACPI_FAILURE(status)) { + dev_err(&wdev->dev, "EC Powermode control failed: %s\n", + acpi_format_exception(status)); + return -EIO; + } + + obj = output.pointer; + if (!obj) + return -EINVAL; + + if (obj->type != ACPI_TYPE_BUFFER || + obj->buffer.length != outsize) { + ret = -EINVAL; + goto out_free; + } + + memcpy(buffer, obj->buffer.pointer, obj->buffer.length); + +out_free: + kfree(obj); + return ret; +} + +/** + * Set Power Mode to EC RAM. If Power Mode value greater than 0x3, + * return error + * Method ID: 0x3 + * Arg: 4 Bytes + * Byte [0]: Power Mode: + * 0x0: Balance Mode + * 0x1: Performance Mode + * 0x2: Power Saver Mode + * Return Value: 4 Bytes + * Byte [0]: Return Code + * 0x0: No Error + * 0x1: Error + */ +static int inspur_platform_profile_set(struct platform_profile_handler *pprof, + enum platform_profile_option profile) +{ + struct inspur_wmi_priv *priv = container_of(pprof, struct inspur_wmi_priv, + handler); + u8 ret_code[4] = {0, 0, 0, 0}; + int ret; + + switch (profile) { + case PLATFORM_PROFILE_BALANCED: + ret_code[0] = INSPUR_TMP_PROFILE_BALANCE; + break; + case PLATFORM_PROFILE_PERFORMANCE: + ret_code[0] = INSPUR_TMP_PROFILE_PERFORMANCE; + break; + case PLATFORM_PROFILE_LOW_POWER: + ret_code[0] = INSPUR_TMP_PROFILE_POWERSAVE; + break; + default: + return -EOPNOTSUPP; + } + + ret = inspur_wmi_perform_query(priv->wdev, INSPUR_WMI_SET_POWERMODE, + ret_code, sizeof(ret_code), + sizeof(ret_code)); + + if (ret < 0) + return ret; + + if (ret_code[0]) + return -EBADRQC; + + return 0; +} + +/** + * Get Power Mode from EC RAM, If Power Mode value greater than 0x3, + * return error + * Method ID: 0x2 + * Return Value: 4 Bytes + * Byte [0]: Return Code + * 0x0: No Error + * 0x1: Error + * Byte [1]: Power Mode + * 0x0: Balance Mode + * 0x1: Performance Mode + * 0x2: Power Saver Mode + */ +static int inspur_platform_profile_get(struct platform_profile_handler *pprof, + enum platform_profile_option *profile) +{ + struct inspur_wmi_priv *priv = container_of(pprof, struct inspur_wmi_priv, + handler); + u8 ret_code[4] = {0, 0, 0, 0}; + int ret; + + ret = inspur_wmi_perform_query(priv->wdev, INSPUR_WMI_GET_POWERMODE, + &ret_code, sizeof(ret_code), + sizeof(ret_code)); + if (ret < 0) + return ret; + + if (ret_code[0]) + return -EBADRQC; + + switch (ret_code[1]) { + case INSPUR_TMP_PROFILE_BALANCE: + *profile = PLATFORM_PROFILE_BALANCED; + break; + case INSPUR_TMP_PROFILE_PERFORMANCE: + *profile = PLATFORM_PROFILE_PERFORMANCE; + break; + case INSPUR_TMP_PROFILE_POWERSAVE: + *profile = PLATFORM_PROFILE_LOW_POWER; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int inspur_wmi_probe(struct wmi_device *wdev, const void *context) +{ + struct inspur_wmi_priv *priv; + + priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->wdev = wdev; + dev_set_drvdata(&wdev->dev, priv); + + priv->handler.profile_get = inspur_platform_profile_get; + priv->handler.profile_set = inspur_platform_profile_set; + + set_bit(PLATFORM_PROFILE_LOW_POWER, priv->handler.choices); + set_bit(PLATFORM_PROFILE_BALANCED, priv->handler.choices); + set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->handler.choices); + + return platform_profile_register(&priv->handler); +} + +static void inspur_wmi_remove(struct wmi_device *wdev) +{ + platform_profile_remove(); +} + +static const struct wmi_device_id inspur_wmi_id_table[] = { + { .guid_string = WMI_INSPUR_POWERMODE_BIOS_GUID }, + { } +}; + +MODULE_DEVICE_TABLE(wmi, inspur_wmi_id_table); + +static struct wmi_driver inspur_wmi_driver = { + .driver = { + .name = "inspur-wmi", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, + }, + .id_table = inspur_wmi_id_table, + .probe = inspur_wmi_probe, + .remove = inspur_wmi_remove, +}; + +module_wmi_driver(inspur_wmi_driver); + +MODULE_AUTHOR("Ai Chao "); +MODULE_DESCRIPTION("Inspur WMI Platform Profile"); +MODULE_LICENSE("GPL");