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Merge branches 'acpi-drivers', 'acpi-misc' and 'acpi-tools'
* acpi-drivers: ACPI / DPTF: move int340x_thermal.c to the DPTF folder ACPI / DPTF: Add DPTF power participant driver * acpi-misc: ACPI / lpat: make it explicitly non-modular ACPI / dock: make dock explicitly non-modular * acpi-tools: tools/acpi: use CROSS_COMPILE to define prefix
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config DPTF_POWER | ||
tristate "DPTF Platform Power Participant" | ||
depends on X86 | ||
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 | ||
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To compile this driver as a module, choose M here: | ||
the module will be called dptf_power. |
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obj-$(CONFIG_ACPI) += int340x_thermal.o | ||
obj-$(CONFIG_DPTF_POWER) += dptf_power.o | ||
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ccflags-y += -Idrivers/acpi |
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/* | ||
* 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. | ||
* | ||
*/ | ||
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#include <linux/kernel.h> | ||
#include <linux/module.h> | ||
#include <linux/acpi.h> | ||
#include <linux/platform_device.h> | ||
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/* | ||
* Presentation of attributes which are defined for INT3407. They are: | ||
* PMAX : Maximum platform powe | ||
* PSRC : Platform power source | ||
* ARTG : Adapter rating | ||
* CTYP : Charger type | ||
* PBSS : Battery steady power | ||
*/ | ||
#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;\ | ||
\ | ||
status = acpi_evaluate_integer(acpi_dev->handle, #object,\ | ||
NULL, &val);\ | ||
if (ACPI_SUCCESS(status))\ | ||
return sprintf(buf, "%d\n", (int)val);\ | ||
else \ | ||
return -EINVAL;\ | ||
} | ||
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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) | ||
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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); | ||
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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, | ||
NULL | ||
}; | ||
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static struct attribute_group dptf_power_attribute_group = { | ||
.attrs = dptf_power_attrs, | ||
.name = "dptf_power" | ||
}; | ||
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static int dptf_power_add(struct platform_device *pdev) | ||
{ | ||
struct acpi_device *acpi_dev; | ||
acpi_status status; | ||
unsigned long long ptype; | ||
int result; | ||
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acpi_dev = ACPI_COMPANION(&(pdev->dev)); | ||
if (!acpi_dev) | ||
return -ENODEV; | ||
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status = acpi_evaluate_integer(acpi_dev->handle, "PTYP", NULL, &ptype); | ||
if (ACPI_FAILURE(status)) | ||
return -ENODEV; | ||
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if (ptype != 0x11) | ||
return -ENODEV; | ||
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result = sysfs_create_group(&pdev->dev.kobj, | ||
&dptf_power_attribute_group); | ||
if (result) | ||
return result; | ||
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platform_set_drvdata(pdev, acpi_dev); | ||
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return 0; | ||
} | ||
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static int dptf_power_remove(struct platform_device *pdev) | ||
{ | ||
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sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group); | ||
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return 0; | ||
} | ||
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static const struct acpi_device_id int3407_device_ids[] = { | ||
{"INT3407", 0}, | ||
{"", 0}, | ||
}; | ||
MODULE_DEVICE_TABLE(acpi, int3407_device_ids); | ||
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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, | ||
}, | ||
}; | ||
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module_platform_driver(dptf_power_driver); | ||
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MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); | ||
MODULE_LICENSE("GPL v2"); | ||
MODULE_DESCRIPTION("ACPI DPTF platform power driver"); |
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