Merge tag 'platform-drivers-x86-v6.5-2' of...

Merge tag 'platform-drivers-x86-v6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver fixes from Hans de Goede:
 "Misc small fixes and hw-id additions"

* tag 'platform-drivers-x86-v6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: touchscreen_dmi: Add info for the Archos 101 Cesium Educ tablet
  platform/x86: dell-ddv: Fix mangled list in documentation
  platform/x86: dell-ddv: Improve error handling
  platform/x86/amd: pmf: Add new ACPI ID AMDI0103
  platform/x86/amd: pmc: Add new ACPI ID AMDI000A
  platform/x86/amd: pmc: Apply nvme quirk to HP 15s-eq2xxx
  platform/x86: Move s2idle quirk from thinkpad-acpi to amd-pmc
  platform/x86: int3472/discrete: set variable skl_int3472_regulator_second_sensor storage-class-specifier to static
  platform/x86/intel/tpmi: Prevent overflow for cap_offset
  platform/x86: wmi: Replace open coded guid_parse_and_compare()
  platform/x86: wmi: Break possible infinite loop when parsing GUID

Documentation/wmi/devices/dell-wmi-ddv.rst

@@ -187,7 +187,8 @@ WMI method BatteryeRawAnalytics()
 
 Returns a buffer usually containg 12 blocks of analytics data.
 Those blocks contain:
-- block number starting with 0 (u8)
+
+- a block number starting with 0 (u8)
 - 31 bytes of unknown data
 
 .. note::

drivers/platform/x86/amd/Makefile

@@ -4,7 +4,7 @@
 # AMD x86 Platform-Specific Drivers
 #
 
-amd-pmc-y			:= pmc.o
+amd-pmc-y			:= pmc.o pmc-quirks.o
 obj-$(CONFIG_AMD_PMC)		+= amd-pmc.o
 amd_hsmp-y			:= hsmp.o
 obj-$(CONFIG_AMD_HSMP)		+= amd_hsmp.o

drivers/platform/x86/amd/pmc-quirks.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * AMD SoC Power Management Controller Driver Quirks
+ *
+ * Copyright (c) 2023, Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Author: Mario Limonciello <mario.limonciello@amd.com>
+ */
+
+#include <linux/dmi.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+
+#include "pmc.h"
+
+struct quirk_entry {
+	u32 s2idle_bug_mmio;
+};
+
+static struct quirk_entry quirk_s2idle_bug = {
+	.s2idle_bug_mmio = 0xfed80380,
+};
+
+static const struct dmi_system_id fwbug_list[] = {
+	{
+		.ident = "L14 Gen2 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20X5"),
+		}
+	},
+	{
+		.ident = "T14s Gen2 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20XF"),
+		}
+	},
+	{
+		.ident = "X13 Gen2 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20XH"),
+		}
+	},
+	{
+		.ident = "T14 Gen2 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20XK"),
+		}
+	},
+	{
+		.ident = "T14 Gen1 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20UD"),
+		}
+	},
+	{
+		.ident = "T14 Gen1 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20UE"),
+		}
+	},
+	{
+		.ident = "T14s Gen1 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20UH"),
+		}
+	},
+	{
+		.ident = "T14s Gen1 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20UJ"),
+		}
+	},
+	{
+		.ident = "P14s Gen1 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20Y1"),
+		}
+	},
+	{
+		.ident = "P14s Gen2 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "21A0"),
+		}
+	},
+	{
+		.ident = "P14s Gen2 AMD",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "21A1"),
+		}
+	},
+	/* https://gitlab.freedesktop.org/drm/amd/-/issues/2684 */
+	{
+		.ident = "HP Laptop 15s-eq2xxx",
+		.driver_data = &quirk_s2idle_bug,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "HP Laptop 15s-eq2xxx"),
+		}
+	},
+	{}
+};
+
+/*
+ * Laptops that run a SMI handler during the D3->D0 transition that occurs
+ * specifically when exiting suspend to idle which can cause
+ * large delays during resume when the IOMMU translation layer is enabled (the default
+ * behavior) for NVME devices:
+ *
+ * To avoid this firmware problem, skip the SMI handler on these machines before the
+ * D0 transition occurs.
+ */
+static void amd_pmc_skip_nvme_smi_handler(u32 s2idle_bug_mmio)
+{
+	struct resource *res;
+	void __iomem *addr;
+	u8 val;
+
+	res = request_mem_region_muxed(s2idle_bug_mmio, 1, "amd_pmc_pm80");
+	if (!res)
+		return;
+
+	addr = ioremap(s2idle_bug_mmio, 1);
+	if (!addr)
+		goto cleanup_resource;
+
+	val = ioread8(addr);
+	iowrite8(val & ~BIT(0), addr);
+
+	iounmap(addr);
+cleanup_resource:
+	release_resource(res);
+	kfree(res);
+}
+
+void amd_pmc_process_restore_quirks(struct amd_pmc_dev *dev)
+{
+	if (dev->quirks && dev->quirks->s2idle_bug_mmio)
+		amd_pmc_skip_nvme_smi_handler(dev->quirks->s2idle_bug_mmio);
+}
+
+void amd_pmc_quirks_init(struct amd_pmc_dev *dev)
+{
+	const struct dmi_system_id *dmi_id;
+
+	dmi_id = dmi_first_match(fwbug_list);
+	if (!dmi_id)
+		return;
+	dev->quirks = dmi_id->driver_data;
+	if (dev->quirks->s2idle_bug_mmio)
+		pr_info("Using s2idle quirk to avoid %s platform firmware bug\n",
+			dmi_id->ident);
+}

drivers/platform/x86/amd/pmc.c

@@ -28,6 +28,8 @@
 #include <linux/seq_file.h>
 #include <linux/uaccess.h>
 
+#include "pmc.h"
+
 /* SMU communication registers */
 #define AMD_PMC_REGISTER_MESSAGE	0x538
 #define AMD_PMC_REGISTER_RESPONSE	0x980
@@ -94,6 +96,7 @@
 #define AMD_CPU_ID_CB			0x14D8
 #define AMD_CPU_ID_PS			0x14E8
 #define AMD_CPU_ID_SP			0x14A4
+#define PCI_DEVICE_ID_AMD_1AH_M20H_ROOT 0x1507
 
 #define PMC_MSG_DELAY_MIN_US		50
 #define RESPONSE_REGISTER_LOOP_MAX	20000
@@ -146,29 +149,6 @@ static const struct amd_pmc_bit_map soc15_ip_blk[] = {
 	{}
 };
 
-struct amd_pmc_dev {
-	void __iomem *regbase;
-	void __iomem *smu_virt_addr;
-	void __iomem *stb_virt_addr;
-	void __iomem *fch_virt_addr;
-	bool msg_port;
-	u32 base_addr;
-	u32 cpu_id;
-	u32 active_ips;
-	u32 dram_size;
-	u32 num_ips;
-	u32 s2d_msg_id;
-/* SMU version information */
-	u8 smu_program;
-	u8 major;
-	u8 minor;
-	u8 rev;
-	struct device *dev;
-	struct pci_dev *rdev;
-	struct mutex lock; /* generic mutex lock */
-	struct dentry *dbgfs_dir;
-};
-
 static bool enable_stb;
 module_param(enable_stb, bool, 0644);
 MODULE_PARM_DESC(enable_stb, "Enable the STB debug mechanism");
@@ -891,6 +871,8 @@ static void amd_pmc_s2idle_restore(void)
 
 	/* Notify on failed entry */
 	amd_pmc_validate_deepest(pdev);
+
+	amd_pmc_process_restore_quirks(pdev);
 }
 
 static struct acpi_s2idle_dev_ops amd_pmc_s2idle_dev_ops = {
@@ -926,6 +908,7 @@ static const struct pci_device_id pmc_pci_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_PCO) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_RV) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_SP) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M20H_ROOT) },
 	{ }
 };
 
@@ -1087,6 +1070,8 @@ static int amd_pmc_probe(struct platform_device *pdev)
 		err = acpi_register_lps0_dev(&amd_pmc_s2idle_dev_ops);
 		if (err)
 			dev_warn(dev->dev, "failed to register LPS0 sleep handler, expect increased power consumption\n");
+		if (!disable_workarounds)
+			amd_pmc_quirks_init(dev);
 	}
 
 	amd_pmc_dbgfs_register(dev);
@@ -1115,6 +1100,7 @@ static const struct acpi_device_id amd_pmc_acpi_ids[] = {
 	{"AMDI0007", 0},
 	{"AMDI0008", 0},
 	{"AMDI0009", 0},
+	{"AMDI000A", 0},
 	{"AMD0004", 0},
 	{"AMD0005", 0},
 	{ }

drivers/platform/x86/amd/pmc.h

+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * AMD SoC Power Management Controller Driver
+ *
+ * Copyright (c) 2023, Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Author: Mario Limonciello <mario.limonciello@amd.com>
+ */
+
+#ifndef PMC_H
+#define PMC_H
+
+#include <linux/types.h>
+#include <linux/mutex.h>
+
+struct amd_pmc_dev {
+	void __iomem *regbase;
+	void __iomem *smu_virt_addr;
+	void __iomem *stb_virt_addr;
+	void __iomem *fch_virt_addr;
+	bool msg_port;
+	u32 base_addr;
+	u32 cpu_id;
+	u32 active_ips;
+	u32 dram_size;
+	u32 num_ips;
+	u32 s2d_msg_id;
+/* SMU version information */
+	u8 smu_program;
+	u8 major;
+	u8 minor;
+	u8 rev;
+	struct device *dev;
+	struct pci_dev *rdev;
+	struct mutex lock; /* generic mutex lock */
+	struct dentry *dbgfs_dir;
+	struct quirk_entry *quirks;
+};
+
+void amd_pmc_process_restore_quirks(struct amd_pmc_dev *dev);
+void amd_pmc_quirks_init(struct amd_pmc_dev *dev);
+
+#endif /* PMC_H */

drivers/platform/x86/amd/pmf/core.c

@@ -40,6 +40,7 @@
 /* List of supported CPU ids */
 #define AMD_CPU_ID_RMB			0x14b5
 #define AMD_CPU_ID_PS			0x14e8
+#define PCI_DEVICE_ID_AMD_1AH_M20H_ROOT	0x1507
 
 #define PMF_MSG_DELAY_MIN_US		50
 #define RESPONSE_REGISTER_LOOP_MAX	20000
@@ -242,6 +243,7 @@ int amd_pmf_send_cmd(struct amd_pmf_dev *dev, u8 message, bool get, u32 arg, u32
 static const struct pci_device_id pmf_pci_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_RMB) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_PS) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M20H_ROOT) },
 	{ }
 };
 
@@ -333,6 +335,7 @@ static void amd_pmf_deinit_features(struct amd_pmf_dev *dev)
 static const struct acpi_device_id amd_pmf_acpi_ids[] = {
 	{"AMDI0100", 0x100},
 	{"AMDI0102", 0},
+	{"AMDI0103", 0},
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, amd_pmf_acpi_ids);

drivers/platform/x86/dell/dell-wmi-ddv.c

@@ -616,7 +616,8 @@ static int dell_wmi_ddv_hwmon_add(struct dell_wmi_ddv_data *data)
 	}
 
 	if (index < 2) {
-		ret = -ENODEV;
+		/* Finding no available sensors is not an error */
+		ret = 0;
 
 		goto err_release;
 	}
@@ -841,13 +842,13 @@ static int dell_wmi_ddv_probe(struct wmi_device *wdev, const void *context)
 
 	if (IS_REACHABLE(CONFIG_ACPI_BATTERY)) {
 		ret = dell_wmi_ddv_battery_add(data);
-		if (ret < 0 && ret != -ENODEV)
+		if (ret < 0)
 			dev_warn(&wdev->dev, "Unable to register ACPI battery hook: %d\n", ret);
 	}
 
 	if (IS_REACHABLE(CONFIG_HWMON)) {
 		ret = dell_wmi_ddv_hwmon_add(data);
-		if (ret < 0 && ret != -ENODEV)
+		if (ret < 0)
 			dev_warn(&wdev->dev, "Unable to register hwmon interface: %d\n", ret);
 	}
 

drivers/platform/x86/intel/int3472/clk_and_regulator.c

@@ -260,7 +260,7 @@ static_assert(ARRAY_SIZE(skl_int3472_regulator_map_supplies) ==
  * This DMI table contains the name of the second sensor. This is used to add
  * entries for the second sensor to the supply_map.
  */
-const struct dmi_system_id skl_int3472_regulator_second_sensor[] = {
+static const struct dmi_system_id skl_int3472_regulator_second_sensor[] = {
 	{
 		/* Lenovo Miix 510-12IKB */
 		.matches = {

drivers/platform/x86/intel/tpmi.c

@@ -356,9 +356,7 @@ static int intel_vsec_tpmi_init(struct auxiliary_device *auxdev)
 		if (!pfs_start)
 			pfs_start = res_start;
 
-		pfs->pfs_header.cap_offset *= TPMI_CAP_OFFSET_UNIT;
-
-		pfs->vsec_offset = pfs_start + pfs->pfs_header.cap_offset;
+		pfs->vsec_offset = pfs_start + pfs->pfs_header.cap_offset * TPMI_CAP_OFFSET_UNIT;
 
 		/*
 		 * Process TPMI_INFO to get PCI device to CPU package ID.

drivers/platform/x86/thinkpad_acpi.c

@@ -315,17 +315,12 @@ struct ibm_init_struct {
 /* DMI Quirks */
 struct quirk_entry {
 	bool btusb_bug;
-	u32 s2idle_bug_mmio;
 };
 
 static struct quirk_entry quirk_btusb_bug = {
 	.btusb_bug = true,
 };
 
-static struct quirk_entry quirk_s2idle_bug = {
-	.s2idle_bug_mmio = 0xfed80380,
-};
-
 static struct {
 	u32 bluetooth:1;
 	u32 hotkey:1;
@@ -4422,136 +4417,9 @@ static const struct dmi_system_id fwbug_list[] __initconst = {
 			DMI_MATCH(DMI_BOARD_NAME, "20MV"),
 		},
 	},
-	{
-		.ident = "L14 Gen2 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20X5"),
-		}
-	},
-	{
-		.ident = "T14s Gen2 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20XF"),
-		}
-	},
-	{
-		.ident = "X13 Gen2 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20XH"),
-		}
-	},
-	{
-		.ident = "T14 Gen2 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20XK"),
-		}
-	},
-	{
-		.ident = "T14 Gen1 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20UD"),
-		}
-	},
-	{
-		.ident = "T14 Gen1 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20UE"),
-		}
-	},
-	{
-		.ident = "T14s Gen1 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20UH"),
-		}
-	},
-	{
-		.ident = "T14s Gen1 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20UJ"),
-		}
-	},
-	{
-		.ident = "P14s Gen1 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "20Y1"),
-		}
-	},
-	{
-		.ident = "P14s Gen2 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "21A0"),
-		}
-	},
-	{
-		.ident = "P14s Gen2 AMD",
-		.driver_data = &quirk_s2idle_bug,
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "21A1"),
-		}
-	},
 	{}
 };
 
-#ifdef CONFIG_SUSPEND
-/*
- * Lenovo laptops from a variety of generations run a SMI handler during the D3->D0
- * transition that occurs specifically when exiting suspend to idle which can cause
- * large delays during resume when the IOMMU translation layer is enabled (the default
- * behavior) for NVME devices:
- *
- * To avoid this firmware problem, skip the SMI handler on these machines before the
- * D0 transition occurs.
- */
-static void thinkpad_acpi_amd_s2idle_restore(void)
-{
-	struct resource *res;
-	void __iomem *addr;
-	u8 val;
-
-	res = request_mem_region_muxed(tp_features.quirks->s2idle_bug_mmio, 1,
-					"thinkpad_acpi_pm80");
-	if (!res)
-		return;
-
-	addr = ioremap(tp_features.quirks->s2idle_bug_mmio, 1);
-	if (!addr)
-		goto cleanup_resource;
-
-	val = ioread8(addr);
-	iowrite8(val & ~BIT(0), addr);
-
-	iounmap(addr);
-cleanup_resource:
-	release_resource(res);
-	kfree(res);
-}
-
-static struct acpi_s2idle_dev_ops thinkpad_acpi_s2idle_dev_ops = {
-	.restore = thinkpad_acpi_amd_s2idle_restore,
-};
-#endif
-
 static const struct pci_device_id fwbug_cards_ids[] __initconst = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
@@ -11668,10 +11536,6 @@ static void thinkpad_acpi_module_exit(void)
 
 	tpacpi_lifecycle = TPACPI_LIFE_EXITING;
 
-#ifdef CONFIG_SUSPEND
-	if (tp_features.quirks && tp_features.quirks->s2idle_bug_mmio)
-		acpi_unregister_lps0_dev(&thinkpad_acpi_s2idle_dev_ops);
-#endif
 	if (tpacpi_hwmon)
 		hwmon_device_unregister(tpacpi_hwmon);
 	if (tp_features.sensors_pdrv_registered)
@@ -11861,13 +11725,6 @@ static int __init thinkpad_acpi_module_init(void)
 		tp_features.input_device_registered = 1;
 	}
 
-#ifdef CONFIG_SUSPEND
-	if (tp_features.quirks && tp_features.quirks->s2idle_bug_mmio) {
-		if (!acpi_register_lps0_dev(&thinkpad_acpi_s2idle_dev_ops))
-			pr_info("Using s2idle quirk to avoid %s platform firmware bug\n",
-				(dmi_id && dmi_id->ident) ? dmi_id->ident : "");
-	}
-#endif
 	return 0;
 }
 

drivers/platform/x86/touchscreen_dmi.c

@@ -26,6 +26,21 @@ struct ts_dmi_data {
 
 /* NOTE: Please keep all entries sorted alphabetically */
 
+static const struct property_entry archos_101_cesium_educ_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1280),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1850),
+	PROPERTY_ENTRY_BOOL("touchscreen-inverted-x"),
+	PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
+	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	PROPERTY_ENTRY_STRING("firmware-name", "gsl1680-archos-101-cesium-educ.fw"),
+	{ }
+};
+
+static const struct ts_dmi_data archos_101_cesium_educ_data = {
+	.acpi_name      = "MSSL1680:00",
+	.properties     = archos_101_cesium_educ_props,
+};
+
 static const struct property_entry chuwi_hi8_props[] = {
 	PROPERTY_ENTRY_U32("touchscreen-size-x", 1665),
 	PROPERTY_ENTRY_U32("touchscreen-size-y", 1140),
@@ -1047,6 +1062,13 @@ static const struct ts_dmi_data vinga_twizzle_j116_data = {
 
 /* NOTE: Please keep this table sorted alphabetically */
 const struct dmi_system_id touchscreen_dmi_table[] = {
+	{
+		/* Archos 101 Cesium Educ */
+		.driver_data = (void *)&archos_101_cesium_educ_data,
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "ARCHOS 101 Cesium Educ"),
+		},
+	},
 	{
 		/* Chuwi Hi8 */
 		.driver_data = (void *)&chuwi_hi8_data,

drivers/platform/x86/wmi.c

@@ -136,6 +136,16 @@ static acpi_status find_guid(const char *guid_string, struct wmi_block **out)
 	return AE_NOT_FOUND;
 }
 
+static bool guid_parse_and_compare(const char *string, const guid_t *guid)
+{
+	guid_t guid_input;
+
+	if (guid_parse(string, &guid_input))
+		return false;
+
+	return guid_equal(&guid_input, guid);
+}
+
 static const void *find_guid_context(struct wmi_block *wblock,
 				     struct wmi_driver *wdriver)
 {
@@ -146,11 +156,7 @@ static const void *find_guid_context(struct wmi_block *wblock,
 		return NULL;
 
 	while (*id->guid_string) {
-		guid_t guid_input;
-
-		if (guid_parse(id->guid_string, &guid_input))
-			continue;
-		if (guid_equal(&wblock->gblock.guid, &guid_input))
+		if (guid_parse_and_compare(id->guid_string, &wblock->gblock.guid))
 			return id->context;
 		id++;
 	}
@@ -895,11 +901,7 @@ static int wmi_dev_match(struct device *dev, struct device_driver *driver)
 		return 0;
 
 	while (*id->guid_string) {
-		guid_t driver_guid;
-
-		if (WARN_ON(guid_parse(id->guid_string, &driver_guid)))
-			continue;
-		if (guid_equal(&driver_guid, &wblock->gblock.guid))
+		if (guid_parse_and_compare(id->guid_string, &wblock->gblock.guid))
 			return 1;
 
 		id++;
@@ -1239,11 +1241,7 @@ static bool guid_already_parsed_for_legacy(struct acpi_device *device, const gui
 	list_for_each_entry(wblock, &wmi_block_list, list) {
 		/* skip warning and register if we know the driver will use struct wmi_driver */
 		for (int i = 0; allow_duplicates[i] != NULL; i++) {
-			guid_t tmp;
-
-			if (guid_parse(allow_duplicates[i], &tmp))
-				continue;
-			if (guid_equal(&tmp, guid))
+			if (guid_parse_and_compare(allow_duplicates[i], guid))
 				return false;
 		}
 		if (guid_equal(&wblock->gblock.guid, guid)) {