@@ -480,6 +480,7 @@ config ACPI_NFIT_DEBUG
issue.
source "drivers/acpi/apei/Kconfig"
+source "drivers/acpi/dptf/Kconfig"
config ACPI_EXTLOG
tristate "Extended Error Log support"
@@ -102,3 +102,4 @@ obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o
obj-$(CONFIG_XPOWER_PMIC_OPREGION) += pmic/intel_pmic_xpower.o
video-objs += acpi_video.o video_detect.o
+obj-y += dptf/
new file mode 100644
@@ -0,0 +1,17 @@
+config DPTF_POWER
+ tristate "DPTF Platform Power Participant"
+ depends on X86
+ select ACPI_BATTERY_COMMON
+ select POWER_SUPPLY
+ default y
+ help
+ This driver adds support for Dynamic Platform and Thermal Framework
+ (DPTF) Platform Power Participant device support.
+ This participant is responsible for exposing platform telemetry such
+ as platform Power, battery Information such as state of Charge,
+ estimated maximum sustainable power (PMax), SMART battery spec
+ information.
+
+ To compile this driver as a module, choose M here:
+ the module will be called dptf_power.
+
new file mode 100644
@@ -0,0 +1,3 @@
+obj-$(CONFIG_DPTF_POWER) += dptf_power.o
+
+ccflags-y += -Idrivers/acpi
new file mode 100644
@@ -0,0 +1,286 @@
+/*
+ * dptf_power: DPTF platform power driver
+ * Copyright (c) 2016, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+#include "battery.h"
+
+/*
+ * Presentation of attributes which are only defined for INT3407. They are:
+ * PMAX : Maximum platform powe
+ * PSRC : Platform power source
+ * ARTG : Adapter rating
+ * CTYP : Charger type
+ * PBSS : Battery steady power
+ * DPSP : power sampling period
+ */
+#define DPTF_POWER_SHOW(name, object) \
+static ssize_t name##_show(struct device *dev,\
+ struct device_attribute *attr,\
+ char *buf)\
+{\
+ struct platform_device *pdev = to_platform_device(dev); \
+ struct acpi_device *acpi_dev = platform_get_drvdata(pdev);\
+ unsigned long long val;\
+ acpi_status status;\
+ int multiplier = 1;\
+\
+ status = acpi_evaluate_integer(acpi_dev->handle, #object,\
+ NULL, &val);\
+ if (ACPI_SUCCESS(status)) {\
+ if (!strcmp(#object, "DPSP")) \
+ multiplier = 100; \
+ return sprintf(buf, "%d\n", ((int)val * multiplier));\
+ } 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(charger_type, CTYP)
+DPTF_POWER_SHOW(battery_steady_power_mw, PBSS)
+DPTF_POWER_SHOW(power_sampling_period_us, DPSP)
+
+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(power_sampling_period_us);
+static DEVICE_ATTR_RO(charger_type);
+
+/*
+ * Attributes read via _BST and _BIX methods. These fields are populated in
+ * battery_common part. Here they are just presented in sysfs
+ */
+#define BATTERY_INFO_SHOW(name, format, object) \
+static ssize_t name##_show(struct device *dev,\
+ struct device_attribute *attr,\
+ char *buf)\
+{\
+ struct platform_device *pdev = to_platform_device(dev); \
+ struct acpi_device *acpi_dev = platform_get_drvdata(pdev);\
+ struct acpi_battery *battery = acpi_driver_data(acpi_dev);\
+ int result;\
+ \
+ result = acpi_battery_update(battery, false);\
+ if (result) \
+ return result;\
+ \
+ return sprintf(buf, #format, battery->object);\
+}
+BATTERY_INFO_SHOW(design_capacity_mwh, %d\n, design_capacity)
+BATTERY_INFO_SHOW(last_full_charge_capacity_mwh, %d\n, full_charge_capacity);
+BATTERY_INFO_SHOW(design_voltage_mv, %d\n, design_voltage);
+BATTERY_INFO_SHOW(design_capacity_warning_mwh, %d\n, design_capacity_warning);
+BATTERY_INFO_SHOW(design_capacity_low_mwh, %d\n, design_capacity_low);
+BATTERY_INFO_SHOW(cycle_count, %d\n, cycle_count);
+BATTERY_INFO_SHOW(capacity_granularity_1_mwh, %d\n, capacity_granularity_1);
+BATTERY_INFO_SHOW(capacity_granularity_2_mwh, %d\n, capacity_granularity_2);
+BATTERY_INFO_SHOW(model_number, %s\n, model_number);
+BATTERY_INFO_SHOW(serial_number, %s\n, serial_number);
+BATTERY_INFO_SHOW(type, %s\n, type);
+BATTERY_INFO_SHOW(oem_info, %s\n, oem_info);
+BATTERY_INFO_SHOW(present_rate_mw, %d\n, rate_now);
+BATTERY_INFO_SHOW(remaining_capacity_mwh, %d\n, capacity_now);
+BATTERY_INFO_SHOW(present_voltage_mv, %d\n, voltage_now);
+
+static DEVICE_ATTR_RO(design_capacity_mwh);
+static DEVICE_ATTR_RO(last_full_charge_capacity_mwh);
+static DEVICE_ATTR_RO(design_voltage_mv);
+static DEVICE_ATTR_RO(design_capacity_warning_mwh);
+static DEVICE_ATTR_RO(design_capacity_low_mwh);
+static DEVICE_ATTR_RO(cycle_count);
+static DEVICE_ATTR_RO(capacity_granularity_1_mwh);
+static DEVICE_ATTR_RO(capacity_granularity_2_mwh);
+static DEVICE_ATTR_RO(model_number);
+static DEVICE_ATTR_RO(serial_number);
+static DEVICE_ATTR_RO(type);
+static DEVICE_ATTR_RO(oem_info);
+static DEVICE_ATTR_RO(present_rate_mw);
+static DEVICE_ATTR_RO(remaining_capacity_mwh);
+static DEVICE_ATTR_RO(present_voltage_mv);
+
+/*
+ * Capacity and charging state need special handler to interpret and present
+ * in string format
+ */
+static ssize_t capacity_state_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
+ struct acpi_battery *battery = acpi_driver_data(acpi_dev);
+ int result;
+
+ result = acpi_battery_update(battery, false);
+ if (result)
+ return result;
+
+ if (battery->state & 0x04)
+ return sprintf(buf, "critical");
+ else
+ return sprintf(buf, "ok");
+}
+static DEVICE_ATTR_RO(capacity_state);
+
+static ssize_t charging_state_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
+ struct acpi_battery *battery = acpi_driver_data(acpi_dev);
+ int result;
+
+ result = acpi_battery_update(battery, false);
+ if (result)
+ return result;
+
+ if ((battery->state & 0x01) && (battery->state & 0x02))
+ return sprintf(buf, "charging/discharging\n");
+ else if (battery->state & 0x01)
+ return sprintf(buf, "discharging\n");
+ else if (battery->state & 0x02)
+ return sprintf(buf, "charging\n");
+ else
+ return sprintf(buf, "charged\n");
+}
+static DEVICE_ATTR_RO(charging_state);
+
+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_charger_type.attr,
+ &dev_attr_battery_steady_power_mw.attr,
+ &dev_attr_power_sampling_period_us.attr,
+ &dev_attr_design_capacity_mwh.attr,
+ &dev_attr_last_full_charge_capacity_mwh.attr,
+ &dev_attr_design_voltage_mv.attr,
+ &dev_attr_design_capacity_warning_mwh.attr,
+ &dev_attr_design_capacity_low_mwh.attr,
+ &dev_attr_cycle_count.attr,
+ &dev_attr_capacity_granularity_1_mwh.attr,
+ &dev_attr_capacity_granularity_2_mwh.attr,
+ &dev_attr_model_number.attr,
+ &dev_attr_serial_number.attr,
+ &dev_attr_type.attr,
+ &dev_attr_oem_info.attr,
+ &dev_attr_capacity_state.attr,
+ &dev_attr_charging_state.attr,
+ &dev_attr_present_rate_mw.attr,
+ &dev_attr_remaining_capacity_mwh.attr,
+ &dev_attr_present_voltage_mv.attr,
+ NULL
+};
+
+static struct attribute_group dptf_power_attribute_group = {
+ .attrs = dptf_power_attrs,
+ .name = "dptf_power"
+};
+
+static void dptf_power_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct acpi_device *device = data;
+
+ acpi_battery_common_notify(device, event);
+}
+
+static int dptf_power_add(struct platform_device *pdev)
+{
+ struct acpi_device *acpi_dev;
+ acpi_status status;
+ unsigned long long ptype;
+ 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))
+ return -ENODEV;
+
+ if (ptype != 0x11)
+ return -ENODEV;
+
+#if IS_ENABLED(CONFIG_ACPI_BATTERY)
+ result = acpi_battery_common_add(acpi_dev, false);
+#else
+ result = acpi_battery_common_add(acpi_dev, true);
+#endif
+ if (result)
+ return result;
+
+ result = sysfs_create_group(&pdev->dev.kobj,
+ &dptf_power_attribute_group);
+ if (result)
+ goto error_remove_battery;
+
+ result = acpi_install_notify_handler(acpi_dev->handle,
+ ACPI_DEVICE_NOTIFY,
+ dptf_power_notify,
+ (void *)acpi_dev);
+ if (result)
+ goto error_remove_sysfs;
+
+ platform_set_drvdata(pdev, acpi_dev);
+
+ return 0;
+
+error_remove_sysfs:
+ sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
+error_remove_battery:
+ acpi_battery_common_remove(acpi_dev);
+ return result;
+}
+
+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);
+ sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
+ acpi_battery_common_remove(acpi_dev);
+
+ return 0;
+}
+
+static const struct acpi_device_id int3407_device_ids[] = {
+ {"INT3407", 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 Platform 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");
This driver adds support for Dynamic Platform and Thermal Framework (DPTF) Platform Power Participant device support. This participant is responsible for exposing platform telemetry such as platform Power, battery Information such as state of Charge, estimated maximum sustainable power (PMax), SMART battery spec information. This driver is implemented as a platform driver for INT3407. This driver uses services of battery_common to read battery information and state to avoid code duplication. Optionally this can register with power supply class and can act as ACPI Battery. This feature is activated only when CONFIG_ACPI_BATTERY is not defined in the configuration There are two types of objects in INT3407: - Same as ACPI Battery objects: _BST and _BIX. They are read directly using the interface from battery_common - Specific to INT3407: These objects are read directly executing ACPI methods in this module. These attributes are presented via sysfs interface under the INT3407 platform device: #ls /sys/bus/platform/devices/INT3407\:00/dptf_power/ adapter_rating_mw charger_type design_capacity_warning_mwh oem_info remaining_capacity_mwh battery_steady_power_mw charging_state design_voltage_mv platform_power_source serial_number capacity_granularity_1_mwh cycle_count last_full_charge_capacity_mwh power_sampling_period_us type capacity_granularity_2_mwh design_capacity_low_mwh max_platform_power_mw present_rate_mw capacity_state design_capacity_mwh model_number present_voltage_mv ACPI methods description used in this driver: PSOC: Platform Battery State Of Charge as a percentage. PMAX: Maximum platform power that can be supported by the battery in mW. PSRC: System charge source, 0x00 = DC 0x01 = AC 0x02 = USB 0x03 = Wireless Charger ARTG: Adapter rating in mW (Maximum Adapter power) Must be 0 if no AC Adaptor is plugged in. CTYP: Charger Type, Traditional : 0x01 Hybrid: 0x02 NVDC: 0x03 PBSS: Returns max sustained power for battery in milliWatts. DPSP: Polling interval in 10ths of seconds. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> --- drivers/acpi/Kconfig | 1 + drivers/acpi/Makefile | 1 + drivers/acpi/dptf/Kconfig | 17 +++ drivers/acpi/dptf/Makefile | 3 + drivers/acpi/dptf/dptf_power.c | 286 +++++++++++++++++++++++++++++++++++++++++ 5 files changed, 308 insertions(+) create mode 100644 drivers/acpi/dptf/Kconfig create mode 100644 drivers/acpi/dptf/Makefile create mode 100644 drivers/acpi/dptf/dptf_power.c