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-rw-r--r--drivers/acpi/dptf/Kconfig49
-rw-r--r--drivers/acpi/dptf/Makefile4
-rw-r--r--drivers/acpi/dptf/dptf_pch_fivr.c162
-rw-r--r--drivers/acpi/dptf/dptf_power.c251
-rw-r--r--drivers/acpi/dptf/int340x_thermal.c61
5 files changed, 527 insertions, 0 deletions
diff --git a/drivers/acpi/dptf/Kconfig b/drivers/acpi/dptf/Kconfig
new file mode 100644
index 000000000..1e8c7ce89
--- /dev/null
+++ b/drivers/acpi/dptf/Kconfig
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0
+
+menuconfig ACPI_DPTF
+ bool "Intel DPTF (Dynamic Platform and Thermal Framework) Support"
+ depends on X86
+ help
+ Intel Dynamic Platform and Thermal Framework (DPTF) is a platform
+ level hardware/software solution for power and thermal management.
+
+ As a container for multiple power/thermal technologies, DPTF provides
+ a coordinated approach for different policies to effect the hardware
+ state of a system.
+
+ For more information see:
+ <https://01.org/intel%C2%AE-dynamic-platform-and-thermal-framework-dptf-chromium-os/overview>
+
+if ACPI_DPTF
+
+config DPTF_POWER
+ tristate "Platform Power DPTF Participant"
+ default m
+ help
+ This driver adds support for Dynamic Platform and Thermal Framework
+ (DPTF) Platform Power Participant device (INT3407) support.
+ This participant is responsible for exposing platform telemetry:
+ max_platform_power
+ platform_power_source
+ adapter_rating
+ battery_steady_power
+ charger_type
+
+ To compile this driver as a module, choose M here:
+ the module will be called dptf_power.
+
+config DPTF_PCH_FIVR
+ tristate "PCH FIVR DPTF Participant"
+ default m
+ help
+ This driver adds support for Dynamic Platform and Thermal Framework
+ (DPTF) PCH FIVR Participant device support. This driver allows to
+ switch the PCH FIVR (Fully Integrated Voltage Regulator) frequency.
+ This participant is responsible for exposing:
+ freq_mhz_low_clock
+ freq_mhz_high_clock
+
+ To compile this driver as a module, choose M here:
+ the module will be called dptf_pch_fivr.
+
+endif
diff --git a/drivers/acpi/dptf/Makefile b/drivers/acpi/dptf/Makefile
new file mode 100644
index 000000000..297340682
--- /dev/null
+++ b/drivers/acpi/dptf/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_ACPI) += int340x_thermal.o
+obj-$(CONFIG_DPTF_POWER) += dptf_power.o
+obj-$(CONFIG_DPTF_PCH_FIVR) += dptf_pch_fivr.o
diff --git a/drivers/acpi/dptf/dptf_pch_fivr.c b/drivers/acpi/dptf/dptf_pch_fivr.c
new file mode 100644
index 000000000..550b9081f
--- /dev/null
+++ b/drivers/acpi/dptf/dptf_pch_fivr.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * dptf_pch_fivr: DPTF PCH FIVR Participant driver
+ * Copyright (c) 2020, Intel Corporation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+struct pch_fivr_resp {
+ u64 status;
+ u64 result;
+};
+
+static int pch_fivr_read(acpi_handle handle, char *method, struct pch_fivr_resp *fivr_resp)
+{
+ struct acpi_buffer resp = { sizeof(struct pch_fivr_resp), fivr_resp};
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer format = { sizeof("NN"), "NN" };
+ union acpi_object *obj;
+ acpi_status status;
+ int ret = -EFAULT;
+
+ status = acpi_evaluate_object(handle, method, NULL, &buffer);
+ if (ACPI_FAILURE(status))
+ return ret;
+
+ obj = buffer.pointer;
+ if (!obj || obj->type != ACPI_TYPE_PACKAGE)
+ goto release_buffer;
+
+ status = acpi_extract_package(obj, &format, &resp);
+ if (ACPI_FAILURE(status))
+ goto release_buffer;
+
+ if (fivr_resp->status)
+ goto release_buffer;
+
+ ret = 0;
+
+release_buffer:
+ kfree(buffer.pointer);
+ return ret;
+}
+
+/*
+ * Presentation of attributes which are defined for INT1045
+ * They are:
+ * freq_mhz_low_clock : Set PCH FIVR switching freq for
+ * FIVR clock 19.2MHz and 24MHz
+ * freq_mhz_high_clock : Set PCH FIVR switching freq for
+ * FIVR clock 38.4MHz
+ */
+#define PCH_FIVR_SHOW(name, method) \
+static ssize_t name##_show(struct device *dev,\
+ struct device_attribute *attr,\
+ char *buf)\
+{\
+ struct acpi_device *acpi_dev = dev_get_drvdata(dev);\
+ struct pch_fivr_resp fivr_resp;\
+ int status;\
+\
+ status = pch_fivr_read(acpi_dev->handle, #method, &fivr_resp);\
+ if (status)\
+ return status;\
+\
+ return sprintf(buf, "%llu\n", fivr_resp.result);\
+}
+
+#define PCH_FIVR_STORE(name, method) \
+static ssize_t name##_store(struct device *dev,\
+ struct device_attribute *attr,\
+ const char *buf, size_t count)\
+{\
+ struct acpi_device *acpi_dev = dev_get_drvdata(dev);\
+ acpi_status status;\
+ u32 val;\
+\
+ if (kstrtouint(buf, 0, &val) < 0)\
+ return -EINVAL;\
+\
+ status = acpi_execute_simple_method(acpi_dev->handle, #method, val);\
+ if (ACPI_SUCCESS(status))\
+ return count;\
+\
+ return -EINVAL;\
+}
+
+PCH_FIVR_SHOW(freq_mhz_low_clock, GFC0)
+PCH_FIVR_SHOW(freq_mhz_high_clock, GFC1)
+PCH_FIVR_STORE(freq_mhz_low_clock, RFC0)
+PCH_FIVR_STORE(freq_mhz_high_clock, RFC1)
+
+static DEVICE_ATTR_RW(freq_mhz_low_clock);
+static DEVICE_ATTR_RW(freq_mhz_high_clock);
+
+static struct attribute *fivr_attrs[] = {
+ &dev_attr_freq_mhz_low_clock.attr,
+ &dev_attr_freq_mhz_high_clock.attr,
+ NULL
+};
+
+static const struct attribute_group pch_fivr_attribute_group = {
+ .attrs = fivr_attrs,
+ .name = "pch_fivr_switch_frequency"
+};
+
+static int pch_fivr_add(struct platform_device *pdev)
+{
+ struct acpi_device *acpi_dev;
+ unsigned long long ptype;
+ acpi_status status;
+ int result;
+
+ acpi_dev = ACPI_COMPANION(&(pdev->dev));
+ if (!acpi_dev)
+ return -ENODEV;
+
+ status = acpi_evaluate_integer(acpi_dev->handle, "PTYP", NULL, &ptype);
+ if (ACPI_FAILURE(status) || ptype != 0x05)
+ return -ENODEV;
+
+ result = sysfs_create_group(&pdev->dev.kobj,
+ &pch_fivr_attribute_group);
+ if (result)
+ return result;
+
+ platform_set_drvdata(pdev, acpi_dev);
+
+ return 0;
+}
+
+static int pch_fivr_remove(struct platform_device *pdev)
+{
+ sysfs_remove_group(&pdev->dev.kobj, &pch_fivr_attribute_group);
+
+ return 0;
+}
+
+static const struct acpi_device_id pch_fivr_device_ids[] = {
+ {"INTC1045", 0},
+ {"INTC1049", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, pch_fivr_device_ids);
+
+static struct platform_driver pch_fivr_driver = {
+ .probe = pch_fivr_add,
+ .remove = pch_fivr_remove,
+ .driver = {
+ .name = "dptf_pch_fivr",
+ .acpi_match_table = pch_fivr_device_ids,
+ },
+};
+
+module_platform_driver(pch_fivr_driver);
+
+MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ACPI DPTF PCH FIVR driver");
diff --git a/drivers/acpi/dptf/dptf_power.c b/drivers/acpi/dptf/dptf_power.c
new file mode 100644
index 000000000..a24d5d7aa
--- /dev/null
+++ b/drivers/acpi/dptf/dptf_power.c
@@ -0,0 +1,251 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * dptf_power: DPTF platform power driver
+ * Copyright (c) 2016, Intel Corporation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+
+/*
+ * Presentation of attributes which are defined for INT3407 and INT3532.
+ * They are:
+ * PMAX : Maximum platform powe
+ * PSRC : Platform power source
+ * ARTG : Adapter rating
+ * CTYP : Charger type
+ * PBSS : Battery steady power
+ * PROP : Rest of worst case platform Power
+ * PBSS : Power Battery Steady State
+ * PBSS : Power Battery Steady State
+ * RBHF : High Frequency Impedance
+ * VBNL : Instantaneous No-Load Voltage
+ * CMPP : Current Discharge Capability
+ */
+#define DPTF_POWER_SHOW(name, object) \
+static ssize_t name##_show(struct device *dev,\
+ struct device_attribute *attr,\
+ char *buf)\
+{\
+ struct acpi_device *acpi_dev = dev_get_drvdata(dev);\
+ unsigned long long val;\
+ acpi_status status;\
+\
+ status = acpi_evaluate_integer(acpi_dev->handle, #object,\
+ NULL, &val);\
+ if (ACPI_SUCCESS(status))\
+ return sprintf(buf, "%d\n", (int)val);\
+ else \
+ return -EINVAL;\
+}
+
+DPTF_POWER_SHOW(max_platform_power_mw, PMAX)
+DPTF_POWER_SHOW(platform_power_source, PSRC)
+DPTF_POWER_SHOW(adapter_rating_mw, ARTG)
+DPTF_POWER_SHOW(battery_steady_power_mw, PBSS)
+DPTF_POWER_SHOW(charger_type, CTYP)
+DPTF_POWER_SHOW(rest_of_platform_power_mw, PROP)
+DPTF_POWER_SHOW(max_steady_state_power_mw, PBSS)
+DPTF_POWER_SHOW(high_freq_impedance_mohm, RBHF)
+DPTF_POWER_SHOW(no_load_voltage_mv, VBNL)
+DPTF_POWER_SHOW(current_discharge_capbility_ma, CMPP);
+
+static DEVICE_ATTR_RO(max_platform_power_mw);
+static DEVICE_ATTR_RO(platform_power_source);
+static DEVICE_ATTR_RO(adapter_rating_mw);
+static DEVICE_ATTR_RO(battery_steady_power_mw);
+static DEVICE_ATTR_RO(charger_type);
+static DEVICE_ATTR_RO(rest_of_platform_power_mw);
+static DEVICE_ATTR_RO(max_steady_state_power_mw);
+static DEVICE_ATTR_RO(high_freq_impedance_mohm);
+static DEVICE_ATTR_RO(no_load_voltage_mv);
+static DEVICE_ATTR_RO(current_discharge_capbility_ma);
+
+static ssize_t prochot_confirm_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi_dev = dev_get_drvdata(dev);
+ acpi_status status;
+ int seq_no;
+
+ if (kstrtouint(buf, 0, &seq_no) < 0)
+ return -EINVAL;
+
+ status = acpi_execute_simple_method(acpi_dev->handle, "PBOK", seq_no);
+ if (ACPI_SUCCESS(status))
+ return count;
+
+ return -EINVAL;
+}
+
+static DEVICE_ATTR_WO(prochot_confirm);
+
+static struct attribute *dptf_power_attrs[] = {
+ &dev_attr_max_platform_power_mw.attr,
+ &dev_attr_platform_power_source.attr,
+ &dev_attr_adapter_rating_mw.attr,
+ &dev_attr_battery_steady_power_mw.attr,
+ &dev_attr_charger_type.attr,
+ &dev_attr_rest_of_platform_power_mw.attr,
+ &dev_attr_prochot_confirm.attr,
+ NULL
+};
+
+static const struct attribute_group dptf_power_attribute_group = {
+ .attrs = dptf_power_attrs,
+ .name = "dptf_power"
+};
+
+static struct attribute *dptf_battery_attrs[] = {
+ &dev_attr_max_platform_power_mw.attr,
+ &dev_attr_max_steady_state_power_mw.attr,
+ &dev_attr_high_freq_impedance_mohm.attr,
+ &dev_attr_no_load_voltage_mv.attr,
+ &dev_attr_current_discharge_capbility_ma.attr,
+ NULL
+};
+
+static const struct attribute_group dptf_battery_attribute_group = {
+ .attrs = dptf_battery_attrs,
+ .name = "dptf_battery"
+};
+
+#define MAX_POWER_CHANGED 0x80
+#define POWER_STATE_CHANGED 0x81
+#define STEADY_STATE_POWER_CHANGED 0x83
+#define POWER_PROP_CHANGE_EVENT 0x84
+#define IMPEDANCED_CHNGED 0x85
+#define VOLTAGE_CURRENT_CHANGED 0x86
+
+static long long dptf_participant_type(acpi_handle handle)
+{
+ unsigned long long ptype;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(handle, "PTYP", NULL, &ptype);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return ptype;
+}
+
+static void dptf_power_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct platform_device *pdev = data;
+ char *attr;
+
+ switch (event) {
+ case POWER_STATE_CHANGED:
+ attr = "platform_power_source";
+ break;
+ case POWER_PROP_CHANGE_EVENT:
+ attr = "rest_of_platform_power_mw";
+ break;
+ case MAX_POWER_CHANGED:
+ attr = "max_platform_power_mw";
+ break;
+ case STEADY_STATE_POWER_CHANGED:
+ attr = "max_steady_state_power_mw";
+ break;
+ case VOLTAGE_CURRENT_CHANGED:
+ attr = "no_load_voltage_mv";
+ break;
+ default:
+ dev_err(&pdev->dev, "Unsupported event [0x%x]\n", event);
+ return;
+ }
+
+ /*
+ * Notify that an attribute is changed, so that user space can read
+ * again.
+ */
+ if (dptf_participant_type(handle) == 0x0CULL)
+ sysfs_notify(&pdev->dev.kobj, "dptf_battery", attr);
+ else
+ sysfs_notify(&pdev->dev.kobj, "dptf_power", attr);
+}
+
+static int dptf_power_add(struct platform_device *pdev)
+{
+ const struct attribute_group *attr_group;
+ struct acpi_device *acpi_dev;
+ unsigned long long ptype;
+ int result;
+
+ acpi_dev = ACPI_COMPANION(&(pdev->dev));
+ if (!acpi_dev)
+ return -ENODEV;
+
+ ptype = dptf_participant_type(acpi_dev->handle);
+ if (ptype == 0x11)
+ attr_group = &dptf_power_attribute_group;
+ else if (ptype == 0x0C)
+ attr_group = &dptf_battery_attribute_group;
+ else
+ return -ENODEV;
+
+ result = acpi_install_notify_handler(acpi_dev->handle,
+ ACPI_DEVICE_NOTIFY,
+ dptf_power_notify,
+ (void *)pdev);
+ if (result)
+ return result;
+
+ result = sysfs_create_group(&pdev->dev.kobj,
+ attr_group);
+ if (result) {
+ acpi_remove_notify_handler(acpi_dev->handle,
+ ACPI_DEVICE_NOTIFY,
+ dptf_power_notify);
+ return result;
+ }
+
+ platform_set_drvdata(pdev, acpi_dev);
+
+ return 0;
+}
+
+static int dptf_power_remove(struct platform_device *pdev)
+{
+ struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
+
+ acpi_remove_notify_handler(acpi_dev->handle,
+ ACPI_DEVICE_NOTIFY,
+ dptf_power_notify);
+
+ if (dptf_participant_type(acpi_dev->handle) == 0x0CULL)
+ sysfs_remove_group(&pdev->dev.kobj, &dptf_battery_attribute_group);
+ else
+ sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
+
+ return 0;
+}
+
+static const struct acpi_device_id int3407_device_ids[] = {
+ {"INT3407", 0},
+ {"INT3532", 0},
+ {"INTC1047", 0},
+ {"INTC1050", 0},
+ {"INTC1060", 0},
+ {"INTC1061", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, int3407_device_ids);
+
+static struct platform_driver dptf_power_driver = {
+ .probe = dptf_power_add,
+ .remove = dptf_power_remove,
+ .driver = {
+ .name = "dptf_power",
+ .acpi_match_table = int3407_device_ids,
+ },
+};
+
+module_platform_driver(dptf_power_driver);
+
+MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ACPI DPTF platform power driver");
diff --git a/drivers/acpi/dptf/int340x_thermal.c b/drivers/acpi/dptf/int340x_thermal.c
new file mode 100644
index 000000000..d14025a85
--- /dev/null
+++ b/drivers/acpi/dptf/int340x_thermal.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ACPI support for int340x thermal drivers
+ *
+ * Copyright (C) 2014, Intel Corporation
+ * Authors: Zhang Rui <rui.zhang@intel.com>
+ */
+
+#include <linux/acpi.h>
+#include <linux/module.h>
+
+#include "../internal.h"
+
+#define INT3401_DEVICE 0X01
+static const struct acpi_device_id int340x_thermal_device_ids[] = {
+ {"INT3400"},
+ {"INT3401", INT3401_DEVICE},
+ {"INT3402"},
+ {"INT3403"},
+ {"INT3404"},
+ {"INT3406"},
+ {"INT3407"},
+ {"INT3408"},
+ {"INT3409"},
+ {"INT340A"},
+ {"INT340B"},
+ {"INTC1040"},
+ {"INTC1041"},
+ {"INTC1043"},
+ {"INTC1044"},
+ {"INTC1045"},
+ {"INTC1046"},
+ {"INTC1047"},
+ {"INTC1048"},
+ {"INTC1049"},
+ {"INTC1060"},
+ {"INTC1061"},
+ {""},
+};
+
+static int int340x_thermal_handler_attach(struct acpi_device *adev,
+ const struct acpi_device_id *id)
+{
+ if (IS_ENABLED(CONFIG_INT340X_THERMAL))
+ acpi_create_platform_device(adev, NULL);
+ /* Intel SoC DTS thermal driver needs INT3401 to set IRQ descriptor */
+ else if (IS_ENABLED(CONFIG_INTEL_SOC_DTS_THERMAL) &&
+ id->driver_data == INT3401_DEVICE)
+ acpi_create_platform_device(adev, NULL);
+ return 1;
+}
+
+static struct acpi_scan_handler int340x_thermal_handler = {
+ .ids = int340x_thermal_device_ids,
+ .attach = int340x_thermal_handler_attach,
+};
+
+void __init acpi_int340x_thermal_init(void)
+{
+ acpi_scan_add_handler(&int340x_thermal_handler);
+}