Merge branches 'acpi-x86', 'acpi-fan', 'acpi-soc' and 'acpi-cppc'

Merge changes in the ACPI x86-specific code, ACPI fan driverm ACPI LPSS
(Intel SoC) driver and the ACPI CPPC library for 6.11-rc1:

 - Switch the ACPI x86 utility code and the ACPI LPSS driver to new
   Intel CPU model defines (Tony Luck).

 - Add hwmon interface support to the ACPI fan driver (Armin Wolf).

 - Add sysfs entry for guaranteed performance to the ACPI CPPC library
   and replace a ternary operator with umax() in it (Petr Tesařík,
   Prabhakar Pujeri).

* acpi-x86:
  ACPI: x86: Switch to new Intel CPU model defines

* acpi-fan:
  ACPI: fan: Add hwmon support

* acpi-soc:
  ACPI: LPSS: Switch to new Intel CPU model defines

* acpi-cppc:
  ACPI: CPPC: Replace ternary operator with umax()
  ACPI: CPPC: add sysfs entry for guaranteed performance

Author: rafaeljw

drivers/acpi/Makefile

@@ -77,6 +77,7 @@ obj-$(CONFIG_ACPI_TINY_POWER_BUTTON)	+= tiny-power-button.o
 obj-$(CONFIG_ACPI_FAN)		+= fan.o
 fan-objs			:= fan_core.o
 fan-objs			+= fan_attr.o
+fan-$(CONFIG_HWMON)		+= fan_hwmon.o
 
 obj-$(CONFIG_ACPI_VIDEO)	+= video.o
 obj-$(CONFIG_ACPI_TAD)		+= acpi_tad.o

drivers/acpi/cppc_acpi.c

@@ -160,6 +160,7 @@ show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, highest_perf);
 show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_perf);
 show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, nominal_perf);
 show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_nonlinear_perf);
+show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, guaranteed_perf);
 show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_freq);
 show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, nominal_freq);
 
@@ -196,6 +197,7 @@ static struct attribute *cppc_attrs[] = {
 	&highest_perf.attr,
 	&lowest_perf.attr,
 	&lowest_nonlinear_perf.attr,
+	&guaranteed_perf.attr,
 	&nominal_perf.attr,
 	&nominal_freq.attr,
 	&lowest_freq.attr,
@@ -1837,7 +1839,7 @@ static void cppc_find_dmi_mhz(const struct dmi_header *dm, void *private)
 	    dm->length >= DMI_ENTRY_PROCESSOR_MIN_LENGTH) {
 		u16 val = (u16)get_unaligned((const u16 *)
 				(dmi_data + DMI_PROCESSOR_MAX_SPEED));
-		*mhz = val > *mhz ? val : *mhz;
+		*mhz = umax(val, *mhz);
 	}
 }
 

drivers/acpi/fan.h

@@ -10,6 +10,8 @@
 #ifndef _ACPI_FAN_H_
 #define _ACPI_FAN_H_
 
+#include <linux/kconfig.h>
+
 #define ACPI_FAN_DEVICE_IDS	\
 	{"INT3404", }, /* Fan */ \
 	{"INTC1044", }, /* Fan for Tiger Lake generation */ \
@@ -57,4 +59,11 @@ struct acpi_fan {
 int acpi_fan_get_fst(struct acpi_device *device, struct acpi_fan_fst *fst);
 int acpi_fan_create_attributes(struct acpi_device *device);
 void acpi_fan_delete_attributes(struct acpi_device *device);
+
+#if IS_REACHABLE(CONFIG_HWMON)
+int devm_acpi_fan_create_hwmon(struct acpi_device *device);
+#else
+static inline int devm_acpi_fan_create_hwmon(struct acpi_device *device) { return 0; };
+#endif
+
 #endif

drivers/acpi/fan_core.c

@@ -336,6 +336,10 @@ static int acpi_fan_probe(struct platform_device *pdev)
 		if (result)
 			return result;
 
+		result = devm_acpi_fan_create_hwmon(device);
+		if (result)
+			return result;
+
 		result = acpi_fan_create_attributes(device);
 		if (result)
 			return result;

drivers/acpi/fan_hwmon.c

@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * hwmon interface for the ACPI Fan driver.
+ *
+ * Copyright (C) 2024 Armin Wolf <[email protected]>
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/limits.h>
+#include <linux/types.h>
+#include <linux/units.h>
+
+#include "fan.h"
+
+/* Returned when the ACPI fan does not support speed reporting */
+#define FAN_SPEED_UNAVAILABLE	U32_MAX
+#define FAN_POWER_UNAVAILABLE	U32_MAX
+
+static struct acpi_fan_fps *acpi_fan_get_current_fps(struct acpi_fan *fan, u64 control)
+{
+	unsigned int i;
+
+	for (i = 0; i < fan->fps_count; i++) {
+		if (fan->fps[i].control == control)
+			return &fan->fps[i];
+	}
+
+	return NULL;
+}
+
+static umode_t acpi_fan_hwmon_is_visible(const void *drvdata, enum hwmon_sensor_types type,
+					 u32 attr, int channel)
+{
+	const struct acpi_fan *fan = drvdata;
+	unsigned int i;
+
+	switch (type) {
+	case hwmon_fan:
+		switch (attr) {
+		case hwmon_fan_input:
+			return 0444;
+		case hwmon_fan_target:
+			/*
+			 * When in fine grain control mode, not every fan control value
+			 * has an associated fan performance state.
+			 */
+			if (fan->fif.fine_grain_ctrl)
+				return 0;
+
+			return 0444;
+		default:
+			return 0;
+		}
+	case hwmon_power:
+		switch (attr) {
+		case hwmon_power_input:
+			/*
+			 * When in fine grain control mode, not every fan control value
+			 * has an associated fan performance state.
+			 */
+			if (fan->fif.fine_grain_ctrl)
+				return 0;
+
+			/*
+			 * When all fan performance states contain no valid power data,
+			 * when the associated attribute should not be created.
+			 */
+			for (i = 0; i < fan->fps_count; i++) {
+				if (fan->fps[i].power != FAN_POWER_UNAVAILABLE)
+					return 0444;
+			}
+
+			return 0;
+		default:
+			return 0;
+		}
+	default:
+		return 0;
+	}
+}
+
+static int acpi_fan_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+			       int channel, long *val)
+{
+	struct acpi_device *adev = to_acpi_device(dev->parent);
+	struct acpi_fan *fan = dev_get_drvdata(dev);
+	struct acpi_fan_fps *fps;
+	struct acpi_fan_fst fst;
+	int ret;
+
+	ret = acpi_fan_get_fst(adev, &fst);
+	if (ret < 0)
+		return ret;
+
+	switch (type) {
+	case hwmon_fan:
+		switch (attr) {
+		case hwmon_fan_input:
+			if (fst.speed == FAN_SPEED_UNAVAILABLE)
+				return -ENODEV;
+
+			if (fst.speed > LONG_MAX)
+				return -EOVERFLOW;
+
+			*val = fst.speed;
+			return 0;
+		case hwmon_fan_target:
+			fps = acpi_fan_get_current_fps(fan, fst.control);
+			if (!fps)
+				return -EIO;
+
+			if (fps->speed > LONG_MAX)
+				return -EOVERFLOW;
+
+			*val = fps->speed;
+			return 0;
+		default:
+			return -EOPNOTSUPP;
+		}
+	case hwmon_power:
+		switch (attr) {
+		case hwmon_power_input:
+			fps = acpi_fan_get_current_fps(fan, fst.control);
+			if (!fps)
+				return -EIO;
+
+			if (fps->power == FAN_POWER_UNAVAILABLE)
+				return -ENODEV;
+
+			if (fps->power > LONG_MAX / MICROWATT_PER_MILLIWATT)
+				return -EOVERFLOW;
+
+			*val = fps->power * MICROWATT_PER_MILLIWATT;
+			return 0;
+		default:
+			return -EOPNOTSUPP;
+		}
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static const struct hwmon_ops acpi_fan_hwmon_ops = {
+	.is_visible = acpi_fan_hwmon_is_visible,
+	.read = acpi_fan_hwmon_read,
+};
+
+static const struct hwmon_channel_info * const acpi_fan_hwmon_info[] = {
+	HWMON_CHANNEL_INFO(fan, HWMON_F_INPUT | HWMON_F_TARGET),
+	HWMON_CHANNEL_INFO(power, HWMON_P_INPUT),
+	NULL
+};
+
+static const struct hwmon_chip_info acpi_fan_hwmon_chip_info = {
+	.ops = &acpi_fan_hwmon_ops,
+	.info = acpi_fan_hwmon_info,
+};
+
+int devm_acpi_fan_create_hwmon(struct acpi_device *device)
+{
+	struct acpi_fan *fan = acpi_driver_data(device);
+	struct device *hdev;
+
+	hdev = devm_hwmon_device_register_with_info(&device->dev, "acpi_fan", fan,
+						    &acpi_fan_hwmon_chip_info, NULL);
+	return PTR_ERR_OR_ZERO(hdev);
+}

drivers/acpi/x86/lpss.c

@@ -338,8 +338,8 @@ static const struct lpss_device_desc bsw_spi_dev_desc = {
 };
 
 static const struct x86_cpu_id lpss_cpu_ids[] = {
-	X86_MATCH_INTEL_FAM6_MODEL(ATOM_SILVERMONT,	NULL),
-	X86_MATCH_INTEL_FAM6_MODEL(ATOM_AIRMONT,	NULL),
+	X86_MATCH_VFM(INTEL_ATOM_SILVERMONT,	NULL),
+	X86_MATCH_VFM(INTEL_ATOM_AIRMONT,	NULL),
 	{}
 };
 

drivers/acpi/x86/utils.c

@@ -45,37 +45,37 @@ struct override_status_id {
 	unsigned long long status;
 };
 
-#define ENTRY(status, hid, uid, path, cpu_model, dmi...) {		\
+#define ENTRY(status, hid, uid, path, cpu_vfm, dmi...) {		\
 	{ { hid, }, {} },						\
-	{ X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} },		\
+	{ X86_MATCH_VFM(cpu_vfm, NULL), {} },				\
 	{ { .matches = dmi }, {} },					\
 	uid,								\
 	path,								\
 	status,								\
 }
 
-#define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
-	ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_model, dmi)
+#define PRESENT_ENTRY_HID(hid, uid, cpu_vfm, dmi...) \
+	ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_vfm, dmi)
 
-#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
-	ENTRY(0, hid, uid, NULL, cpu_model, dmi)
+#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_vfm, dmi...) \
+	ENTRY(0, hid, uid, NULL, cpu_vfm, dmi)
 
-#define PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
-	ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_model, dmi)
+#define PRESENT_ENTRY_PATH(path, cpu_vfm, dmi...) \
+	ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_vfm, dmi)
 
-#define NOT_PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
-	ENTRY(0, "", NULL, path, cpu_model, dmi)
+#define NOT_PRESENT_ENTRY_PATH(path, cpu_vfm, dmi...) \
+	ENTRY(0, "", NULL, path, cpu_vfm, dmi)
 
 static const struct override_status_id override_status_ids[] = {
 	/*
 	 * Bay / Cherry Trail PWM directly poked by GPU driver in win10,
 	 * but Linux uses a separate PWM driver, harmless if not used.
 	 */
-	PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}),
-	PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}),
+	PRESENT_ENTRY_HID("80860F09", "1", INTEL_ATOM_SILVERMONT, {}),
+	PRESENT_ENTRY_HID("80862288", "1", INTEL_ATOM_AIRMONT, {}),
 
 	/* The Xiaomi Mi Pad 2 uses PWM2 for touchkeys backlight control */
-	PRESENT_ENTRY_HID("80862289", "2", ATOM_AIRMONT, {
+	PRESENT_ENTRY_HID("80862289", "2", INTEL_ATOM_AIRMONT, {
 		DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
 	      }),
@@ -84,18 +84,18 @@ static const struct override_status_id override_status_ids[] = {
 	 * The INT0002 device is necessary to clear wakeup interrupt sources
 	 * on Cherry Trail devices, without it we get nobody cared IRQ msgs.
 	 */
-	PRESENT_ENTRY_HID("INT0002", "1", ATOM_AIRMONT, {}),
+	PRESENT_ENTRY_HID("INT0002", "1", INTEL_ATOM_AIRMONT, {}),
 	/*
 	 * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides
 	 * the touchscreen ACPI device until a certain time
 	 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed
 	 * *and* _STA has been called at least 3 times since.
 	 */
-	PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
+	PRESENT_ENTRY_HID("SYNA7500", "1", INTEL_HASWELL_L, {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
 	      }),
-	PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
+	PRESENT_ENTRY_HID("SYNA7500", "1", INTEL_HASWELL_L, {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"),
 	      }),
@@ -104,7 +104,7 @@ static const struct override_status_id override_status_ids[] = {
 	 * The Dell XPS 15 9550 has a SMO8110 accelerometer /
 	 * HDD freefall sensor which is wrongly marked as not present.
 	 */
-	PRESENT_ENTRY_HID("SMO8810", "1", SKYLAKE, {
+	PRESENT_ENTRY_HID("SMO8810", "1", INTEL_SKYLAKE, {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "XPS 15 9550"),
 	      }),
@@ -121,19 +121,19 @@ static const struct override_status_id override_status_ids[] = {
 	 * was copy-pasted from the GPD win, so it has a disabled KIOX000A
 	 * node which we should not enable, thus we also check the BIOS date.
 	 */
-	PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
+	PRESENT_ENTRY_HID("KIOX000A", "1", INTEL_ATOM_AIRMONT, {
 		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
 		DMI_MATCH(DMI_BIOS_DATE, "02/21/2017")
 	      }),
-	PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
+	PRESENT_ENTRY_HID("KIOX000A", "1", INTEL_ATOM_AIRMONT, {
 		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
 		DMI_MATCH(DMI_BIOS_DATE, "03/20/2017")
 	      }),
-	PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
+	PRESENT_ENTRY_HID("KIOX000A", "1", INTEL_ATOM_AIRMONT, {
 		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
@@ -146,7 +146,7 @@ static const struct override_status_id override_status_ids[] = {
 	 * method sets a GPIO causing the PCI wifi card to turn off.
 	 * See above remark about uniqueness of the DMI match.
 	 */
-	NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", ATOM_AIRMONT, {
+	NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", INTEL_ATOM_AIRMONT, {
 		DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 		DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 		DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
@@ -158,7 +158,7 @@ static const struct override_status_id override_status_ids[] = {
 	 * as both ACCL0001 and MAGN0001. As we can only ever register an
 	 * i2c client for one of them, ignore MAGN0001.
 	 */
-	NOT_PRESENT_ENTRY_HID("MAGN0001", "1", ATOM_SILVERMONT, {
+	NOT_PRESENT_ENTRY_HID("MAGN0001", "1", INTEL_ATOM_SILVERMONT, {
 		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"),
 	      }),