platform/x86: asus-wmi: store a min default for ppt options

Laptops with any of the ppt or nv tunables default to the minimum setting
on boot so we can safely assume a stored value is correct.

This patch adds storing of those values in the local struct, and enables
reading of those values back. To prevent creating a series of byte holes
in the struct the "<name>_available" bool is removed and
`asus_sysfs_is_visible()` uses the `ASUS_WMI_DEVID_<name>` directly.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20240404001652.86207-6-luke@ljones.dev
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

1 files changed, 99 insertions, 28 deletions

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 1dbe473294f7..b34edc9a8f46 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -273,13 +273,13 @@ struct asus_wmi {
 	u32 gpu_mux_dev;
 
 	/* Tunables provided by ASUS for gaming laptops */
-	bool ppt_pl2_sppt_available;
-	bool ppt_pl1_spl_available;
-	bool ppt_apu_sppt_available;
-	bool ppt_plat_sppt_available;
-	bool ppt_fppt_available;
-	bool nv_dyn_boost_available;
-	bool nv_temp_tgt_available;
+	u32 ppt_pl2_sppt;
+	u32 ppt_pl1_spl;
+	u32 ppt_apu_sppt;
+	u32 ppt_platform_sppt;
+	u32 ppt_fppt;
+	u32 nv_dynamic_boost;
+	u32 nv_temp_target;
 
 	u32 kbd_rgb_dev;
 	bool kbd_rgb_state_available;
@@ -1031,11 +1031,21 @@ static ssize_t ppt_pl2_sppt_store(struct device *dev,
 		return -EIO;
 	}
 
+	asus->ppt_pl2_sppt = value;
 	sysfs_notify(&asus->platform_device->dev.kobj, NULL, "ppt_pl2_sppt");
 
 	return count;
 }
-static DEVICE_ATTR_WO(ppt_pl2_sppt);
+
+static ssize_t ppt_pl2_sppt_show(struct device *dev,
+				       struct device_attribute *attr,
+				       char *buf)
+{
+	struct asus_wmi *asus = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%u\n", asus->ppt_pl2_sppt);
+}
+static DEVICE_ATTR_RW(ppt_pl2_sppt);
 
 /* Tunable: PPT, Intel=PL1, AMD=SPL ******************************************/
 static ssize_t ppt_pl1_spl_store(struct device *dev,
@@ -1065,11 +1075,20 @@ static ssize_t ppt_pl1_spl_store(struct device *dev,
 		return -EIO;
 	}
 
+	asus->ppt_pl1_spl = value;
 	sysfs_notify(&asus->platform_device->dev.kobj, NULL, "ppt_pl1_spl");
 
 	return count;
 }
-static DEVICE_ATTR_WO(ppt_pl1_spl);
+static ssize_t ppt_pl1_spl_show(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct asus_wmi *asus = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%u\n", asus->ppt_pl1_spl);
+}
+static DEVICE_ATTR_RW(ppt_pl1_spl);
 
 /* Tunable: PPT APU FPPT ******************************************************/
 static ssize_t ppt_fppt_store(struct device *dev,
@@ -1099,11 +1118,21 @@ static ssize_t ppt_fppt_store(struct device *dev,
 		return -EIO;
 	}
 
+	asus->ppt_fppt = value;
 	sysfs_notify(&asus->platform_device->dev.kobj, NULL, "ppt_fpu_sppt");
 
 	return count;
 }
-static DEVICE_ATTR_WO(ppt_fppt);
+
+static ssize_t ppt_fppt_show(struct device *dev,
+				struct device_attribute *attr,
+				char *buf)
+{
+	struct asus_wmi *asus = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%u\n", asus->ppt_fppt);
+}
+static DEVICE_ATTR_RW(ppt_fppt);
 
 /* Tunable: PPT APU SPPT *****************************************************/
 static ssize_t ppt_apu_sppt_store(struct device *dev,
@@ -1133,11 +1162,21 @@ static ssize_t ppt_apu_sppt_store(struct device *dev,
 		return -EIO;
 	}
 
+	asus->ppt_apu_sppt = value;
 	sysfs_notify(&asus->platform_device->dev.kobj, NULL, "ppt_apu_sppt");
 
 	return count;
 }
-static DEVICE_ATTR_WO(ppt_apu_sppt);
+
+static ssize_t ppt_apu_sppt_show(struct device *dev,
+			     struct device_attribute *attr,
+			     char *buf)
+{
+	struct asus_wmi *asus = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%u\n", asus->ppt_apu_sppt);
+}
+static DEVICE_ATTR_RW(ppt_apu_sppt);
 
 /* Tunable: PPT platform SPPT ************************************************/
 static ssize_t ppt_platform_sppt_store(struct device *dev,
@@ -1167,11 +1206,21 @@ static ssize_t ppt_platform_sppt_store(struct device *dev,
 		return -EIO;
 	}
 
+	asus->ppt_platform_sppt = value;
 	sysfs_notify(&asus->platform_device->dev.kobj, NULL, "ppt_platform_sppt");
 
 	return count;
 }
-static DEVICE_ATTR_WO(ppt_platform_sppt);
+
+static ssize_t ppt_platform_sppt_show(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct asus_wmi *asus = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%u\n", asus->ppt_platform_sppt);
+}
+static DEVICE_ATTR_RW(ppt_platform_sppt);
 
 /* Tunable: NVIDIA dynamic boost *********************************************/
 static ssize_t nv_dynamic_boost_store(struct device *dev,
@@ -1201,11 +1250,21 @@ static ssize_t nv_dynamic_boost_store(struct device *dev,
 		return -EIO;
 	}
 
+	asus->nv_dynamic_boost = value;
 	sysfs_notify(&asus->platform_device->dev.kobj, NULL, "nv_dynamic_boost");
 
 	return count;
 }
-static DEVICE_ATTR_WO(nv_dynamic_boost);
+
+static ssize_t nv_dynamic_boost_show(struct device *dev,
+				      struct device_attribute *attr,
+				      char *buf)
+{
+	struct asus_wmi *asus = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%u\n", asus->nv_dynamic_boost);
+}
+static DEVICE_ATTR_RW(nv_dynamic_boost);
 
 /* Tunable: NVIDIA temperature target ****************************************/
 static ssize_t nv_temp_target_store(struct device *dev,
@@ -1235,11 +1294,21 @@ static ssize_t nv_temp_target_store(struct device *dev,
 		return -EIO;
 	}
 
+	asus->nv_temp_target = value;
 	sysfs_notify(&asus->platform_device->dev.kobj, NULL, "nv_temp_target");
 
 	return count;
 }
-static DEVICE_ATTR_WO(nv_temp_target);
+
+static ssize_t nv_temp_target_show(struct device *dev,
+				     struct device_attribute *attr,
+				     char *buf)
+{
+	struct asus_wmi *asus = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%u\n", asus->nv_temp_target);
+}
+static DEVICE_ATTR_RW(nv_temp_target);
 
 /* Battery ********************************************************************/
 
@@ -4295,19 +4364,19 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
 	else if (attr == &dev_attr_throttle_thermal_policy.attr)
 		ok = asus->throttle_thermal_policy_available;
 	else if (attr == &dev_attr_ppt_pl2_sppt.attr)
-		ok = asus->ppt_pl2_sppt_available;
+		devid = ASUS_WMI_DEVID_PPT_PL2_SPPT;
 	else if (attr == &dev_attr_ppt_pl1_spl.attr)
-		ok = asus->ppt_pl1_spl_available;
+		devid = ASUS_WMI_DEVID_PPT_PL1_SPL;
 	else if (attr == &dev_attr_ppt_fppt.attr)
-		ok = asus->ppt_fppt_available;
+		devid = ASUS_WMI_DEVID_PPT_FPPT;
 	else if (attr == &dev_attr_ppt_apu_sppt.attr)
-		ok = asus->ppt_apu_sppt_available;
+		devid = ASUS_WMI_DEVID_PPT_APU_SPPT;
 	else if (attr == &dev_attr_ppt_platform_sppt.attr)
-		ok = asus->ppt_plat_sppt_available;
+		devid = ASUS_WMI_DEVID_PPT_PLAT_SPPT;
 	else if (attr == &dev_attr_nv_dynamic_boost.attr)
-		ok = asus->nv_dyn_boost_available;
+		devid = ASUS_WMI_DEVID_NV_DYN_BOOST;
 	else if (attr == &dev_attr_nv_temp_target.attr)
-		ok = asus->nv_temp_tgt_available;
+		devid = ASUS_WMI_DEVID_NV_THERM_TARGET;
 	else if (attr == &dev_attr_boot_sound.attr)
 		devid = ASUS_WMI_DEVID_BOOT_SOUND;
 	else if (attr == &dev_attr_panel_od.attr)
@@ -4553,18 +4622,20 @@ static int asus_wmi_add(struct platform_device *pdev)
 	if (err)
 		goto fail_platform;
 
+	/* ensure defaults for tunables */
+	asus->ppt_pl2_sppt = 5;
+	asus->ppt_pl1_spl = 5;
+	asus->ppt_apu_sppt = 5;
+	asus->ppt_platform_sppt = 5;
+	asus->ppt_fppt = 5;
+	asus->nv_dynamic_boost = 5;
+	asus->nv_temp_target = 75;
+
 	asus->charge_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CHARGE_MODE);
 	asus->egpu_enable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_EGPU);
 	asus->egpu_connect_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_EGPU_CONNECTED);
 	asus->dgpu_disable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_DGPU);
 	asus->kbd_rgb_state_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_STATE);
-	asus->ppt_pl2_sppt_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PPT_PL2_SPPT);
-	asus->ppt_pl1_spl_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PPT_PL1_SPL);
-	asus->ppt_fppt_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PPT_FPPT);
-	asus->ppt_apu_sppt_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PPT_APU_SPPT);
-	asus->ppt_plat_sppt_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PPT_PLAT_SPPT);
-	asus->nv_dyn_boost_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_NV_DYN_BOOST);
-	asus->nv_temp_tgt_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_NV_THERM_TARGET);
 	asus->panel_overdrive_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PANEL_OD);
 	asus->ally_mcu_usb_switch = acpi_has_method(NULL, ASUS_USB0_PWR_EC0_CSEE)
 						&& dmi_match(DMI_BOARD_NAME, "RC71L");