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Sun, 29 Sep 2024 20:01:21 -0400 (EDT) From: "Luke D. Jones" To: linux-kernel@vger.kernel.org Cc: linux-input@vger.kernel.org, jikos@kernel.org, platform-driver-x86@vger.kernel.org, ilpo.jarvinen@linux.intel.com, hdegoede@redhat.com, corentin.chary@gmail.com, superm1@kernel.org, "Luke D. Jones" , Mario Limonciello Subject: [PATCH v6 7/9] platform/x86: asus-armoury: add apu-mem control support Date: Mon, 30 Sep 2024 13:00:44 +1300 Message-ID: <20240930000046.51388-8-luke@ljones.dev> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20240930000046.51388-1-luke@ljones.dev> References: <20240930000046.51388-1-luke@ljones.dev> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Implement the APU memory size control under the asus-armoury module using the fw_attributes class. This allows the APU allocated memory size to be adjusted depending on the users priority. A reboot is required after change. Signed-off-by: Luke D. Jones Reviewed-by: Mario Limonciello --- drivers/platform/x86/asus-armoury.c | 114 +++++++++++++++++++++ include/linux/platform_data/x86/asus-wmi.h | 1 + 2 files changed, 115 insertions(+) diff --git a/drivers/platform/x86/asus-armoury.c b/drivers/platform/x86/asus-armoury.c index ac87b55a17b3..09e0cbf24f25 100644 --- a/drivers/platform/x86/asus-armoury.c +++ b/drivers/platform/x86/asus-armoury.c @@ -466,6 +466,119 @@ static ssize_t egpu_enable_current_value_store(struct kobject *kobj, struct kobj WMI_SHOW_INT(egpu_enable_current_value, "%d\n", ASUS_WMI_DEVID_EGPU); ATTR_GROUP_BOOL_CUSTOM(egpu_enable, "egpu_enable", "Enable the eGPU (also disables dGPU)"); +/* Device memory available to APU */ + +static ssize_t apu_mem_current_value_show(struct kobject *kobj, struct kobj_attribute *attr, + char *buf) +{ + int err; + u32 mem; + + err = asus_wmi_get_devstate_dsts(ASUS_WMI_DEVID_APU_MEM, &mem); + if (err) + return err; + + switch (mem) { + case 0x100: + mem = 0; + break; + case 0x102: + mem = 1; + break; + case 0x103: + mem = 2; + break; + case 0x104: + mem = 3; + break; + case 0x105: + mem = 4; + break; + case 0x106: + /* This is out of order and looks wrong but is correct */ + mem = 8; + break; + case 0x107: + mem = 5; + break; + case 0x108: + mem = 6; + break; + case 0x109: + mem = 7; + break; + default: + mem = 4; + break; + } + + return sysfs_emit(buf, "%u\n", mem); +} + +static ssize_t apu_mem_current_value_store(struct kobject *kobj, struct kobj_attribute *attr, + const char *buf, size_t count) +{ + int result, err; + u32 requested, mem; + + result = kstrtou32(buf, 10, &requested); + if (result) + return result; + + switch (requested) { + case 0: + mem = 0x000; + break; + case 1: + mem = 0x102; + break; + case 2: + mem = 0x103; + break; + case 3: + mem = 0x104; + break; + case 4: + mem = 0x105; + break; + case 5: + mem = 0x107; + break; + case 6: + mem = 0x108; + break; + case 7: + mem = 0x109; + break; + case 8: + /* This is out of order and looks wrong but is correct */ + mem = 0x106; + break; + default: + return -EIO; + } + + err = asus_wmi_set_devstate(ASUS_WMI_DEVID_APU_MEM, mem, &result); + if (err) { + pr_warn("Failed to set apu_mem: %d\n", err); + return err; + } + + pr_info("APU memory changed to %uGB, reboot required\n", requested); + sysfs_notify(kobj, NULL, attr->attr.name); + + asus_set_reboot_and_signal_event(); + + return count; +} + +static ssize_t apu_mem_possible_values_show(struct kobject *kobj, struct kobj_attribute *attr, + char *buf) +{ + return sysfs_emit(buf, "0;1;2;3;4;5;6;7;8\n"); +} +ATTR_GROUP_ENUM_CUSTOM(apu_mem, "apu_mem", "Set available system RAM (in GB) for the APU to use"); + /* Simple attribute creation */ ATTR_GROUP_ROG_TUNABLE(ppt_pl1_spl, "ppt_pl1_spl", ASUS_WMI_DEVID_PPT_PL1_SPL, cpu_default, cpu_min, cpu_max, 1, "Set the CPU slow package limit"); @@ -521,6 +634,7 @@ static const struct asus_attr_group armoury_attr_groups[] = { { &nv_temp_target_attr_group, ASUS_WMI_DEVID_NV_THERM_TARGET }, { &dgpu_base_tgp_attr_group, ASUS_WMI_DEVID_DGPU_BASE_TGP }, { &dgpu_tgp_attr_group, ASUS_WMI_DEVID_DGPU_SET_TGP }, + { &apu_mem_attr_group, ASUS_WMI_DEVID_APU_MEM }, { &charge_mode_attr_group, ASUS_WMI_DEVID_CHARGE_MODE }, { &boot_sound_attr_group, ASUS_WMI_DEVID_BOOT_SOUND }, diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h index 8c755799eb60..88bf250dc8ca 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -139,6 +139,7 @@ #define ASUS_WMI_DEVID_DGPU_BASE_TGP 0x00120099 #define ASUS_WMI_DEVID_DGPU_SET_TGP 0x00120098 +#define ASUS_WMI_DEVID_APU_MEM 0x000600C1 /* gpu mux switch, 0 = dGPU, 1 = Optimus */ #define ASUS_WMI_DEVID_GPU_MUX 0x00090016