![Peter Senna Tschudin](/assets/img/avatar_default.png)
The semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ position p1,p2; expression x; @@ if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; } @unchanged exists@ position r.p1,r.p2; expression e <= r.x,x,e1; iterator I; statement S; @@ if (x@p1 == NULL) { ... when != I(x,...) S when != e = e1 when != e += e1 when != e -= e1 when != ++e when != --e when != e++ when != e-- when != &e kfree@p2(x); ... return ...; } @ok depends on unchanged exists@ position any r.p1; position r.p2; expression x; @@ ... when != true x@p1 == NULL kfree@p2(x); @depends on !ok && unchanged@ position r.p2; expression x; @@ *kfree@p2(x); // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
1469 lines
33 KiB
C
1469 lines
33 KiB
C
/*
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* Copyright (C) 2007-2009 Luca Tettamanti <kronos.it@gmail.com>
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*
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* This file is released under the GPLv2
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* See COPYING in the top level directory of the kernel tree.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/debugfs.h>
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#include <linux/kernel.h>
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#include <linux/hwmon.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/dmi.h>
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#include <acpi/acpi.h>
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#include <acpi/acpixf.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_bus.h>
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#define ATK_HID "ATK0110"
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static bool new_if;
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module_param(new_if, bool, 0);
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MODULE_PARM_DESC(new_if, "Override detection heuristic and force the use of the new ATK0110 interface");
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static const struct dmi_system_id __initconst atk_force_new_if[] = {
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{
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/* Old interface has broken MCH temp monitoring */
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.ident = "Asus Sabertooth X58",
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.matches = {
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DMI_MATCH(DMI_BOARD_NAME, "SABERTOOTH X58")
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}
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}, {
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/* Old interface reads the same sensor for fan0 and fan1 */
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.ident = "Asus M5A78L",
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.matches = {
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DMI_MATCH(DMI_BOARD_NAME, "M5A78L")
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}
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},
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{ }
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};
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/*
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* Minimum time between readings, enforced in order to avoid
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* hogging the CPU.
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*/
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#define CACHE_TIME HZ
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#define BOARD_ID "MBIF"
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#define METHOD_ENUMERATE "GGRP"
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#define METHOD_READ "GITM"
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#define METHOD_WRITE "SITM"
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#define METHOD_OLD_READ_TMP "RTMP"
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#define METHOD_OLD_READ_VLT "RVLT"
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#define METHOD_OLD_READ_FAN "RFAN"
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#define METHOD_OLD_ENUM_TMP "TSIF"
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#define METHOD_OLD_ENUM_VLT "VSIF"
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#define METHOD_OLD_ENUM_FAN "FSIF"
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#define ATK_MUX_HWMON 0x00000006ULL
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#define ATK_MUX_MGMT 0x00000011ULL
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#define ATK_CLASS_MASK 0xff000000ULL
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#define ATK_CLASS_FREQ_CTL 0x03000000ULL
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#define ATK_CLASS_FAN_CTL 0x04000000ULL
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#define ATK_CLASS_HWMON 0x06000000ULL
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#define ATK_CLASS_MGMT 0x11000000ULL
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#define ATK_TYPE_MASK 0x00ff0000ULL
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#define HWMON_TYPE_VOLT 0x00020000ULL
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#define HWMON_TYPE_TEMP 0x00030000ULL
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#define HWMON_TYPE_FAN 0x00040000ULL
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#define ATK_ELEMENT_ID_MASK 0x0000ffffULL
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#define ATK_EC_ID 0x11060004ULL
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enum atk_pack_member {
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HWMON_PACK_FLAGS,
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HWMON_PACK_NAME,
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HWMON_PACK_LIMIT1,
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HWMON_PACK_LIMIT2,
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HWMON_PACK_ENABLE
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};
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/* New package format */
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#define _HWMON_NEW_PACK_SIZE 7
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#define _HWMON_NEW_PACK_FLAGS 0
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#define _HWMON_NEW_PACK_NAME 1
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#define _HWMON_NEW_PACK_UNK1 2
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#define _HWMON_NEW_PACK_UNK2 3
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#define _HWMON_NEW_PACK_LIMIT1 4
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#define _HWMON_NEW_PACK_LIMIT2 5
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#define _HWMON_NEW_PACK_ENABLE 6
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/* Old package format */
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#define _HWMON_OLD_PACK_SIZE 5
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#define _HWMON_OLD_PACK_FLAGS 0
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#define _HWMON_OLD_PACK_NAME 1
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#define _HWMON_OLD_PACK_LIMIT1 2
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#define _HWMON_OLD_PACK_LIMIT2 3
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#define _HWMON_OLD_PACK_ENABLE 4
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struct atk_data {
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struct device *hwmon_dev;
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acpi_handle atk_handle;
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struct acpi_device *acpi_dev;
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bool old_interface;
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/* old interface */
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acpi_handle rtmp_handle;
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acpi_handle rvlt_handle;
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acpi_handle rfan_handle;
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/* new inteface */
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acpi_handle enumerate_handle;
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acpi_handle read_handle;
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acpi_handle write_handle;
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bool disable_ec;
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int voltage_count;
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int temperature_count;
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int fan_count;
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struct list_head sensor_list;
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struct {
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struct dentry *root;
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u32 id;
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} debugfs;
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};
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typedef ssize_t (*sysfs_show_func)(struct device *dev,
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struct device_attribute *attr, char *buf);
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static const struct acpi_device_id atk_ids[] = {
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{ATK_HID, 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, atk_ids);
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#define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */
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struct atk_sensor_data {
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struct list_head list;
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struct atk_data *data;
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struct device_attribute label_attr;
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struct device_attribute input_attr;
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struct device_attribute limit1_attr;
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struct device_attribute limit2_attr;
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char label_attr_name[ATTR_NAME_SIZE];
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char input_attr_name[ATTR_NAME_SIZE];
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char limit1_attr_name[ATTR_NAME_SIZE];
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char limit2_attr_name[ATTR_NAME_SIZE];
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u64 id;
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u64 type;
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u64 limit1;
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u64 limit2;
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u64 cached_value;
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unsigned long last_updated; /* in jiffies */
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bool is_valid;
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char const *acpi_name;
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};
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/*
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* Return buffer format:
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* [0-3] "value" is valid flag
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* [4-7] value
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* [8- ] unknown stuff on newer mobos
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*/
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struct atk_acpi_ret_buffer {
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u32 flags;
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u32 value;
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u8 data[];
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};
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/* Input buffer used for GITM and SITM methods */
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struct atk_acpi_input_buf {
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u32 id;
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u32 param1;
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u32 param2;
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};
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static int atk_add(struct acpi_device *device);
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static int atk_remove(struct acpi_device *device, int type);
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static void atk_print_sensor(struct atk_data *data, union acpi_object *obj);
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static int atk_read_value(struct atk_sensor_data *sensor, u64 *value);
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static void atk_free_sensors(struct atk_data *data);
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static struct acpi_driver atk_driver = {
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.name = ATK_HID,
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.class = "hwmon",
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.ids = atk_ids,
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.ops = {
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.add = atk_add,
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.remove = atk_remove,
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},
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};
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#define input_to_atk_sensor(attr) \
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container_of(attr, struct atk_sensor_data, input_attr)
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#define label_to_atk_sensor(attr) \
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container_of(attr, struct atk_sensor_data, label_attr)
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#define limit1_to_atk_sensor(attr) \
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container_of(attr, struct atk_sensor_data, limit1_attr)
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#define limit2_to_atk_sensor(attr) \
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container_of(attr, struct atk_sensor_data, limit2_attr)
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static ssize_t atk_input_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct atk_sensor_data *s = input_to_atk_sensor(attr);
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u64 value;
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int err;
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err = atk_read_value(s, &value);
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if (err)
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return err;
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if (s->type == HWMON_TYPE_TEMP)
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/* ACPI returns decidegree */
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value *= 100;
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return sprintf(buf, "%llu\n", value);
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}
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static ssize_t atk_label_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct atk_sensor_data *s = label_to_atk_sensor(attr);
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return sprintf(buf, "%s\n", s->acpi_name);
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}
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static ssize_t atk_limit1_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct atk_sensor_data *s = limit1_to_atk_sensor(attr);
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u64 value = s->limit1;
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if (s->type == HWMON_TYPE_TEMP)
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value *= 100;
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return sprintf(buf, "%lld\n", value);
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}
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static ssize_t atk_limit2_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct atk_sensor_data *s = limit2_to_atk_sensor(attr);
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u64 value = s->limit2;
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if (s->type == HWMON_TYPE_TEMP)
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value *= 100;
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return sprintf(buf, "%lld\n", value);
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}
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static ssize_t atk_name_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "atk0110\n");
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}
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static struct device_attribute atk_name_attr =
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__ATTR(name, 0444, atk_name_show, NULL);
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static void atk_init_attribute(struct device_attribute *attr, char *name,
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sysfs_show_func show)
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{
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sysfs_attr_init(&attr->attr);
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attr->attr.name = name;
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attr->attr.mode = 0444;
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attr->show = show;
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attr->store = NULL;
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}
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static union acpi_object *atk_get_pack_member(struct atk_data *data,
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union acpi_object *pack,
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enum atk_pack_member m)
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{
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bool old_if = data->old_interface;
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int offset;
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switch (m) {
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case HWMON_PACK_FLAGS:
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offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS;
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break;
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case HWMON_PACK_NAME:
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offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME;
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break;
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case HWMON_PACK_LIMIT1:
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offset = old_if ? _HWMON_OLD_PACK_LIMIT1 :
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_HWMON_NEW_PACK_LIMIT1;
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break;
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case HWMON_PACK_LIMIT2:
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offset = old_if ? _HWMON_OLD_PACK_LIMIT2 :
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_HWMON_NEW_PACK_LIMIT2;
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break;
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case HWMON_PACK_ENABLE:
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offset = old_if ? _HWMON_OLD_PACK_ENABLE :
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_HWMON_NEW_PACK_ENABLE;
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break;
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default:
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return NULL;
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}
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return &pack->package.elements[offset];
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}
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/*
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* New package format is:
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* - flag (int)
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* class - used for de-muxing the request to the correct GITn
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* type (volt, temp, fan)
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* sensor id |
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* sensor id - used for de-muxing the request _inside_ the GITn
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* - name (str)
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* - unknown (int)
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* - unknown (int)
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* - limit1 (int)
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* - limit2 (int)
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* - enable (int)
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*
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* The old package has the same format but it's missing the two unknown fields.
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*/
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static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj)
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{
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struct device *dev = &data->acpi_dev->dev;
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union acpi_object *tmp;
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bool old_if = data->old_interface;
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int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE :
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_HWMON_NEW_PACK_SIZE;
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if (obj->type != ACPI_TYPE_PACKAGE) {
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dev_warn(dev, "Invalid type: %d\n", obj->type);
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return -EINVAL;
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}
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if (obj->package.count != expected_size) {
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dev_warn(dev, "Invalid package size: %d, expected: %d\n",
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obj->package.count, expected_size);
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return -EINVAL;
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}
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tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS);
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if (tmp->type != ACPI_TYPE_INTEGER) {
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dev_warn(dev, "Invalid type (flag): %d\n", tmp->type);
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return -EINVAL;
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}
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tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME);
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if (tmp->type != ACPI_TYPE_STRING) {
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dev_warn(dev, "Invalid type (name): %d\n", tmp->type);
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return -EINVAL;
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}
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/* Don't check... we don't know what they're useful for anyway */
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#if 0
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tmp = &obj->package.elements[HWMON_PACK_UNK1];
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if (tmp->type != ACPI_TYPE_INTEGER) {
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dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type);
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return -EINVAL;
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}
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tmp = &obj->package.elements[HWMON_PACK_UNK2];
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if (tmp->type != ACPI_TYPE_INTEGER) {
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dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type);
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return -EINVAL;
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}
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#endif
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tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1);
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if (tmp->type != ACPI_TYPE_INTEGER) {
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dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type);
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return -EINVAL;
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}
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tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2);
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if (tmp->type != ACPI_TYPE_INTEGER) {
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dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type);
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return -EINVAL;
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}
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tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE);
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if (tmp->type != ACPI_TYPE_INTEGER) {
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dev_warn(dev, "Invalid type (enable): %d\n", tmp->type);
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return -EINVAL;
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}
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atk_print_sensor(data, obj);
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return 0;
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}
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#ifdef DEBUG
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static char const *atk_sensor_type(union acpi_object *flags)
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{
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u64 type = flags->integer.value & ATK_TYPE_MASK;
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char const *what;
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switch (type) {
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case HWMON_TYPE_VOLT:
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what = "voltage";
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break;
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case HWMON_TYPE_TEMP:
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what = "temperature";
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break;
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case HWMON_TYPE_FAN:
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what = "fan";
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break;
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default:
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what = "unknown";
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break;
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}
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return what;
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}
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#endif
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static void atk_print_sensor(struct atk_data *data, union acpi_object *obj)
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{
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#ifdef DEBUG
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struct device *dev = &data->acpi_dev->dev;
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union acpi_object *flags;
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union acpi_object *name;
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union acpi_object *limit1;
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union acpi_object *limit2;
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union acpi_object *enable;
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char const *what;
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flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS);
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name = atk_get_pack_member(data, obj, HWMON_PACK_NAME);
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limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1);
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limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2);
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enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE);
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what = atk_sensor_type(flags);
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dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what,
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flags->integer.value,
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name->string.pointer,
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limit1->integer.value, limit2->integer.value,
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enable->integer.value ? "enabled" : "disabled");
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#endif
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}
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static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value)
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{
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struct atk_data *data = sensor->data;
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struct device *dev = &data->acpi_dev->dev;
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struct acpi_object_list params;
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union acpi_object id;
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acpi_status status;
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acpi_handle method;
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switch (sensor->type) {
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case HWMON_TYPE_VOLT:
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method = data->rvlt_handle;
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break;
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case HWMON_TYPE_TEMP:
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method = data->rtmp_handle;
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break;
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case HWMON_TYPE_FAN:
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method = data->rfan_handle;
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break;
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default:
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return -EINVAL;
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}
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id.type = ACPI_TYPE_INTEGER;
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id.integer.value = sensor->id;
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params.count = 1;
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params.pointer = &id;
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status = acpi_evaluate_integer(method, NULL, ¶ms, value);
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if (status != AE_OK) {
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dev_warn(dev, "%s: ACPI exception: %s\n", __func__,
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acpi_format_exception(status));
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return -EIO;
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}
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return 0;
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}
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|
|
static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
struct acpi_buffer buf;
|
|
acpi_status ret;
|
|
struct acpi_object_list params;
|
|
union acpi_object id;
|
|
union acpi_object *pack;
|
|
|
|
id.type = ACPI_TYPE_INTEGER;
|
|
id.integer.value = mux;
|
|
params.count = 1;
|
|
params.pointer = &id;
|
|
|
|
buf.length = ACPI_ALLOCATE_BUFFER;
|
|
ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf);
|
|
if (ret != AE_OK) {
|
|
dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux,
|
|
acpi_format_exception(ret));
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
pack = buf.pointer;
|
|
if (pack->type != ACPI_TYPE_PACKAGE) {
|
|
/* Execution was successful, but the id was not found */
|
|
ACPI_FREE(pack);
|
|
return ERR_PTR(-ENOENT);
|
|
}
|
|
|
|
if (pack->package.count < 1) {
|
|
dev_err(dev, "GGRP[%#x] package is too small\n", mux);
|
|
ACPI_FREE(pack);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
return pack;
|
|
}
|
|
|
|
static union acpi_object *atk_gitm(struct atk_data *data, u64 id)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
struct atk_acpi_input_buf buf;
|
|
union acpi_object tmp;
|
|
struct acpi_object_list params;
|
|
struct acpi_buffer ret;
|
|
union acpi_object *obj;
|
|
acpi_status status;
|
|
|
|
buf.id = id;
|
|
buf.param1 = 0;
|
|
buf.param2 = 0;
|
|
|
|
tmp.type = ACPI_TYPE_BUFFER;
|
|
tmp.buffer.pointer = (u8 *)&buf;
|
|
tmp.buffer.length = sizeof(buf);
|
|
|
|
params.count = 1;
|
|
params.pointer = (void *)&tmp;
|
|
|
|
ret.length = ACPI_ALLOCATE_BUFFER;
|
|
status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms,
|
|
&ret, ACPI_TYPE_BUFFER);
|
|
if (status != AE_OK) {
|
|
dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id,
|
|
acpi_format_exception(status));
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
obj = ret.pointer;
|
|
|
|
/* Sanity check */
|
|
if (obj->buffer.length < 8) {
|
|
dev_warn(dev, "Unexpected ASBF length: %u\n",
|
|
obj->buffer.length);
|
|
ACPI_FREE(obj);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
static union acpi_object *atk_sitm(struct atk_data *data,
|
|
struct atk_acpi_input_buf *buf)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
struct acpi_object_list params;
|
|
union acpi_object tmp;
|
|
struct acpi_buffer ret;
|
|
union acpi_object *obj;
|
|
acpi_status status;
|
|
|
|
tmp.type = ACPI_TYPE_BUFFER;
|
|
tmp.buffer.pointer = (u8 *)buf;
|
|
tmp.buffer.length = sizeof(*buf);
|
|
|
|
params.count = 1;
|
|
params.pointer = &tmp;
|
|
|
|
ret.length = ACPI_ALLOCATE_BUFFER;
|
|
status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms,
|
|
&ret, ACPI_TYPE_BUFFER);
|
|
if (status != AE_OK) {
|
|
dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id,
|
|
acpi_format_exception(status));
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
obj = ret.pointer;
|
|
|
|
/* Sanity check */
|
|
if (obj->buffer.length < 8) {
|
|
dev_warn(dev, "Unexpected ASBF length: %u\n",
|
|
obj->buffer.length);
|
|
ACPI_FREE(obj);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value)
|
|
{
|
|
struct atk_data *data = sensor->data;
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
union acpi_object *obj;
|
|
struct atk_acpi_ret_buffer *buf;
|
|
int err = 0;
|
|
|
|
obj = atk_gitm(data, sensor->id);
|
|
if (IS_ERR(obj))
|
|
return PTR_ERR(obj);
|
|
|
|
buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer;
|
|
if (buf->flags == 0) {
|
|
/*
|
|
* The reading is not valid, possible causes:
|
|
* - sensor failure
|
|
* - enumeration was FUBAR (and we didn't notice)
|
|
*/
|
|
dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id);
|
|
err = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
*value = buf->value;
|
|
out:
|
|
ACPI_FREE(obj);
|
|
return err;
|
|
}
|
|
|
|
static int atk_read_value(struct atk_sensor_data *sensor, u64 *value)
|
|
{
|
|
int err;
|
|
|
|
if (!sensor->is_valid ||
|
|
time_after(jiffies, sensor->last_updated + CACHE_TIME)) {
|
|
if (sensor->data->old_interface)
|
|
err = atk_read_value_old(sensor, value);
|
|
else
|
|
err = atk_read_value_new(sensor, value);
|
|
|
|
sensor->is_valid = true;
|
|
sensor->last_updated = jiffies;
|
|
sensor->cached_value = *value;
|
|
} else {
|
|
*value = sensor->cached_value;
|
|
err = 0;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static int atk_debugfs_gitm_get(void *p, u64 *val)
|
|
{
|
|
struct atk_data *data = p;
|
|
union acpi_object *ret;
|
|
struct atk_acpi_ret_buffer *buf;
|
|
int err = 0;
|
|
|
|
if (!data->read_handle)
|
|
return -ENODEV;
|
|
|
|
if (!data->debugfs.id)
|
|
return -EINVAL;
|
|
|
|
ret = atk_gitm(data, data->debugfs.id);
|
|
if (IS_ERR(ret))
|
|
return PTR_ERR(ret);
|
|
|
|
buf = (struct atk_acpi_ret_buffer *)ret->buffer.pointer;
|
|
if (buf->flags)
|
|
*val = buf->value;
|
|
else
|
|
err = -EIO;
|
|
|
|
ACPI_FREE(ret);
|
|
return err;
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(atk_debugfs_gitm,
|
|
atk_debugfs_gitm_get,
|
|
NULL,
|
|
"0x%08llx\n")
|
|
|
|
static int atk_acpi_print(char *buf, size_t sz, union acpi_object *obj)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (obj->type) {
|
|
case ACPI_TYPE_INTEGER:
|
|
ret = snprintf(buf, sz, "0x%08llx\n", obj->integer.value);
|
|
break;
|
|
case ACPI_TYPE_STRING:
|
|
ret = snprintf(buf, sz, "%s\n", obj->string.pointer);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void atk_pack_print(char *buf, size_t sz, union acpi_object *pack)
|
|
{
|
|
int ret;
|
|
int i;
|
|
|
|
for (i = 0; i < pack->package.count; i++) {
|
|
union acpi_object *obj = &pack->package.elements[i];
|
|
|
|
ret = atk_acpi_print(buf, sz, obj);
|
|
if (ret >= sz)
|
|
break;
|
|
buf += ret;
|
|
sz -= ret;
|
|
}
|
|
}
|
|
|
|
static int atk_debugfs_ggrp_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct atk_data *data = inode->i_private;
|
|
char *buf = NULL;
|
|
union acpi_object *ret;
|
|
u8 cls;
|
|
int i;
|
|
|
|
if (!data->enumerate_handle)
|
|
return -ENODEV;
|
|
if (!data->debugfs.id)
|
|
return -EINVAL;
|
|
|
|
cls = (data->debugfs.id & 0xff000000) >> 24;
|
|
ret = atk_ggrp(data, cls);
|
|
if (IS_ERR(ret))
|
|
return PTR_ERR(ret);
|
|
|
|
for (i = 0; i < ret->package.count; i++) {
|
|
union acpi_object *pack = &ret->package.elements[i];
|
|
union acpi_object *id;
|
|
|
|
if (pack->type != ACPI_TYPE_PACKAGE)
|
|
continue;
|
|
if (!pack->package.count)
|
|
continue;
|
|
id = &pack->package.elements[0];
|
|
if (id->integer.value == data->debugfs.id) {
|
|
/* Print the package */
|
|
buf = kzalloc(512, GFP_KERNEL);
|
|
if (!buf) {
|
|
ACPI_FREE(ret);
|
|
return -ENOMEM;
|
|
}
|
|
atk_pack_print(buf, 512, pack);
|
|
break;
|
|
}
|
|
}
|
|
ACPI_FREE(ret);
|
|
|
|
if (!buf)
|
|
return -EINVAL;
|
|
|
|
file->private_data = buf;
|
|
|
|
return nonseekable_open(inode, file);
|
|
}
|
|
|
|
static ssize_t atk_debugfs_ggrp_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *pos)
|
|
{
|
|
char *str = file->private_data;
|
|
size_t len = strlen(str);
|
|
|
|
return simple_read_from_buffer(buf, count, pos, str, len);
|
|
}
|
|
|
|
static int atk_debugfs_ggrp_release(struct inode *inode, struct file *file)
|
|
{
|
|
kfree(file->private_data);
|
|
return 0;
|
|
}
|
|
|
|
static const struct file_operations atk_debugfs_ggrp_fops = {
|
|
.read = atk_debugfs_ggrp_read,
|
|
.open = atk_debugfs_ggrp_open,
|
|
.release = atk_debugfs_ggrp_release,
|
|
.llseek = no_llseek,
|
|
};
|
|
|
|
static void atk_debugfs_init(struct atk_data *data)
|
|
{
|
|
struct dentry *d;
|
|
struct dentry *f;
|
|
|
|
data->debugfs.id = 0;
|
|
|
|
d = debugfs_create_dir("asus_atk0110", NULL);
|
|
if (!d || IS_ERR(d))
|
|
return;
|
|
|
|
f = debugfs_create_x32("id", S_IRUSR | S_IWUSR, d, &data->debugfs.id);
|
|
if (!f || IS_ERR(f))
|
|
goto cleanup;
|
|
|
|
f = debugfs_create_file("gitm", S_IRUSR, d, data,
|
|
&atk_debugfs_gitm);
|
|
if (!f || IS_ERR(f))
|
|
goto cleanup;
|
|
|
|
f = debugfs_create_file("ggrp", S_IRUSR, d, data,
|
|
&atk_debugfs_ggrp_fops);
|
|
if (!f || IS_ERR(f))
|
|
goto cleanup;
|
|
|
|
data->debugfs.root = d;
|
|
|
|
return;
|
|
cleanup:
|
|
debugfs_remove_recursive(d);
|
|
}
|
|
|
|
static void atk_debugfs_cleanup(struct atk_data *data)
|
|
{
|
|
debugfs_remove_recursive(data->debugfs.root);
|
|
}
|
|
|
|
#else /* CONFIG_DEBUG_FS */
|
|
|
|
static void atk_debugfs_init(struct atk_data *data)
|
|
{
|
|
}
|
|
|
|
static void atk_debugfs_cleanup(struct atk_data *data)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static int atk_add_sensor(struct atk_data *data, union acpi_object *obj)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
union acpi_object *flags;
|
|
union acpi_object *name;
|
|
union acpi_object *limit1;
|
|
union acpi_object *limit2;
|
|
union acpi_object *enable;
|
|
struct atk_sensor_data *sensor;
|
|
char const *base_name;
|
|
char const *limit1_name;
|
|
char const *limit2_name;
|
|
u64 type;
|
|
int err;
|
|
int *num;
|
|
int start;
|
|
|
|
if (obj->type != ACPI_TYPE_PACKAGE) {
|
|
/* wft is this? */
|
|
dev_warn(dev, "Unknown type for ACPI object: (%d)\n",
|
|
obj->type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = validate_hwmon_pack(data, obj);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Ok, we have a valid hwmon package */
|
|
type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value
|
|
& ATK_TYPE_MASK;
|
|
|
|
switch (type) {
|
|
case HWMON_TYPE_VOLT:
|
|
base_name = "in";
|
|
limit1_name = "min";
|
|
limit2_name = "max";
|
|
num = &data->voltage_count;
|
|
start = 0;
|
|
break;
|
|
case HWMON_TYPE_TEMP:
|
|
base_name = "temp";
|
|
limit1_name = "max";
|
|
limit2_name = "crit";
|
|
num = &data->temperature_count;
|
|
start = 1;
|
|
break;
|
|
case HWMON_TYPE_FAN:
|
|
base_name = "fan";
|
|
limit1_name = "min";
|
|
limit2_name = "max";
|
|
num = &data->fan_count;
|
|
start = 1;
|
|
break;
|
|
default:
|
|
dev_warn(dev, "Unknown sensor type: %#llx\n", type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE);
|
|
if (!enable->integer.value)
|
|
/* sensor is disabled */
|
|
return 0;
|
|
|
|
flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS);
|
|
name = atk_get_pack_member(data, obj, HWMON_PACK_NAME);
|
|
limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1);
|
|
limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2);
|
|
|
|
sensor = kzalloc(sizeof(*sensor), GFP_KERNEL);
|
|
if (!sensor)
|
|
return -ENOMEM;
|
|
|
|
sensor->acpi_name = kstrdup(name->string.pointer, GFP_KERNEL);
|
|
if (!sensor->acpi_name) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&sensor->list);
|
|
sensor->type = type;
|
|
sensor->data = data;
|
|
sensor->id = flags->integer.value;
|
|
sensor->limit1 = limit1->integer.value;
|
|
if (data->old_interface)
|
|
sensor->limit2 = limit2->integer.value;
|
|
else
|
|
/* The upper limit is expressed as delta from lower limit */
|
|
sensor->limit2 = sensor->limit1 + limit2->integer.value;
|
|
|
|
snprintf(sensor->input_attr_name, ATTR_NAME_SIZE,
|
|
"%s%d_input", base_name, start + *num);
|
|
atk_init_attribute(&sensor->input_attr,
|
|
sensor->input_attr_name,
|
|
atk_input_show);
|
|
|
|
snprintf(sensor->label_attr_name, ATTR_NAME_SIZE,
|
|
"%s%d_label", base_name, start + *num);
|
|
atk_init_attribute(&sensor->label_attr,
|
|
sensor->label_attr_name,
|
|
atk_label_show);
|
|
|
|
snprintf(sensor->limit1_attr_name, ATTR_NAME_SIZE,
|
|
"%s%d_%s", base_name, start + *num, limit1_name);
|
|
atk_init_attribute(&sensor->limit1_attr,
|
|
sensor->limit1_attr_name,
|
|
atk_limit1_show);
|
|
|
|
snprintf(sensor->limit2_attr_name, ATTR_NAME_SIZE,
|
|
"%s%d_%s", base_name, start + *num, limit2_name);
|
|
atk_init_attribute(&sensor->limit2_attr,
|
|
sensor->limit2_attr_name,
|
|
atk_limit2_show);
|
|
|
|
list_add(&sensor->list, &data->sensor_list);
|
|
(*num)++;
|
|
|
|
return 1;
|
|
out:
|
|
kfree(sensor);
|
|
return err;
|
|
}
|
|
|
|
static int atk_enumerate_old_hwmon(struct atk_data *data)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
struct acpi_buffer buf;
|
|
union acpi_object *pack;
|
|
acpi_status status;
|
|
int i, ret;
|
|
int count = 0;
|
|
|
|
/* Voltages */
|
|
buf.length = ACPI_ALLOCATE_BUFFER;
|
|
status = acpi_evaluate_object_typed(data->atk_handle,
|
|
METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE);
|
|
if (status != AE_OK) {
|
|
dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
pack = buf.pointer;
|
|
for (i = 1; i < pack->package.count; i++) {
|
|
union acpi_object *obj = &pack->package.elements[i];
|
|
|
|
ret = atk_add_sensor(data, obj);
|
|
if (ret > 0)
|
|
count++;
|
|
}
|
|
ACPI_FREE(buf.pointer);
|
|
|
|
/* Temperatures */
|
|
buf.length = ACPI_ALLOCATE_BUFFER;
|
|
status = acpi_evaluate_object_typed(data->atk_handle,
|
|
METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE);
|
|
if (status != AE_OK) {
|
|
dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
ret = -ENODEV;
|
|
goto cleanup;
|
|
}
|
|
|
|
pack = buf.pointer;
|
|
for (i = 1; i < pack->package.count; i++) {
|
|
union acpi_object *obj = &pack->package.elements[i];
|
|
|
|
ret = atk_add_sensor(data, obj);
|
|
if (ret > 0)
|
|
count++;
|
|
}
|
|
ACPI_FREE(buf.pointer);
|
|
|
|
/* Fans */
|
|
buf.length = ACPI_ALLOCATE_BUFFER;
|
|
status = acpi_evaluate_object_typed(data->atk_handle,
|
|
METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE);
|
|
if (status != AE_OK) {
|
|
dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
ret = -ENODEV;
|
|
goto cleanup;
|
|
}
|
|
|
|
pack = buf.pointer;
|
|
for (i = 1; i < pack->package.count; i++) {
|
|
union acpi_object *obj = &pack->package.elements[i];
|
|
|
|
ret = atk_add_sensor(data, obj);
|
|
if (ret > 0)
|
|
count++;
|
|
}
|
|
ACPI_FREE(buf.pointer);
|
|
|
|
return count;
|
|
cleanup:
|
|
atk_free_sensors(data);
|
|
return ret;
|
|
}
|
|
|
|
static int atk_ec_present(struct atk_data *data)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
union acpi_object *pack;
|
|
union acpi_object *ec;
|
|
int ret;
|
|
int i;
|
|
|
|
pack = atk_ggrp(data, ATK_MUX_MGMT);
|
|
if (IS_ERR(pack)) {
|
|
if (PTR_ERR(pack) == -ENOENT) {
|
|
/* The MGMT class does not exists - that's ok */
|
|
dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT);
|
|
return 0;
|
|
}
|
|
return PTR_ERR(pack);
|
|
}
|
|
|
|
/* Search the EC */
|
|
ec = NULL;
|
|
for (i = 0; i < pack->package.count; i++) {
|
|
union acpi_object *obj = &pack->package.elements[i];
|
|
union acpi_object *id;
|
|
|
|
if (obj->type != ACPI_TYPE_PACKAGE)
|
|
continue;
|
|
|
|
id = &obj->package.elements[0];
|
|
if (id->type != ACPI_TYPE_INTEGER)
|
|
continue;
|
|
|
|
if (id->integer.value == ATK_EC_ID) {
|
|
ec = obj;
|
|
break;
|
|
}
|
|
}
|
|
|
|
ret = (ec != NULL);
|
|
if (!ret)
|
|
/* The system has no EC */
|
|
dev_dbg(dev, "EC not found\n");
|
|
|
|
ACPI_FREE(pack);
|
|
return ret;
|
|
}
|
|
|
|
static int atk_ec_enabled(struct atk_data *data)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
union acpi_object *obj;
|
|
struct atk_acpi_ret_buffer *buf;
|
|
int err;
|
|
|
|
obj = atk_gitm(data, ATK_EC_ID);
|
|
if (IS_ERR(obj)) {
|
|
dev_err(dev, "Unable to query EC status\n");
|
|
return PTR_ERR(obj);
|
|
}
|
|
buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer;
|
|
|
|
if (buf->flags == 0) {
|
|
dev_err(dev, "Unable to query EC status\n");
|
|
err = -EIO;
|
|
} else {
|
|
err = (buf->value != 0);
|
|
dev_dbg(dev, "EC is %sabled\n",
|
|
err ? "en" : "dis");
|
|
}
|
|
|
|
ACPI_FREE(obj);
|
|
return err;
|
|
}
|
|
|
|
static int atk_ec_ctl(struct atk_data *data, int enable)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
union acpi_object *obj;
|
|
struct atk_acpi_input_buf sitm;
|
|
struct atk_acpi_ret_buffer *ec_ret;
|
|
int err = 0;
|
|
|
|
sitm.id = ATK_EC_ID;
|
|
sitm.param1 = enable;
|
|
sitm.param2 = 0;
|
|
|
|
obj = atk_sitm(data, &sitm);
|
|
if (IS_ERR(obj)) {
|
|
dev_err(dev, "Failed to %sable the EC\n",
|
|
enable ? "en" : "dis");
|
|
return PTR_ERR(obj);
|
|
}
|
|
ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer;
|
|
if (ec_ret->flags == 0) {
|
|
dev_err(dev, "Failed to %sable the EC\n",
|
|
enable ? "en" : "dis");
|
|
err = -EIO;
|
|
} else {
|
|
dev_info(dev, "EC %sabled\n",
|
|
enable ? "en" : "dis");
|
|
}
|
|
|
|
ACPI_FREE(obj);
|
|
return err;
|
|
}
|
|
|
|
static int atk_enumerate_new_hwmon(struct atk_data *data)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
union acpi_object *pack;
|
|
int err;
|
|
int i;
|
|
|
|
err = atk_ec_present(data);
|
|
if (err < 0)
|
|
return err;
|
|
if (err) {
|
|
err = atk_ec_enabled(data);
|
|
if (err < 0)
|
|
return err;
|
|
/* If the EC was disabled we will disable it again on unload */
|
|
data->disable_ec = err;
|
|
|
|
err = atk_ec_ctl(data, 1);
|
|
if (err) {
|
|
data->disable_ec = false;
|
|
return err;
|
|
}
|
|
}
|
|
|
|
dev_dbg(dev, "Enumerating hwmon sensors\n");
|
|
|
|
pack = atk_ggrp(data, ATK_MUX_HWMON);
|
|
if (IS_ERR(pack))
|
|
return PTR_ERR(pack);
|
|
|
|
for (i = 0; i < pack->package.count; i++) {
|
|
union acpi_object *obj = &pack->package.elements[i];
|
|
|
|
atk_add_sensor(data, obj);
|
|
}
|
|
|
|
err = data->voltage_count + data->temperature_count + data->fan_count;
|
|
|
|
ACPI_FREE(pack);
|
|
return err;
|
|
}
|
|
|
|
static int atk_create_files(struct atk_data *data)
|
|
{
|
|
struct atk_sensor_data *s;
|
|
int err;
|
|
|
|
list_for_each_entry(s, &data->sensor_list, list) {
|
|
err = device_create_file(data->hwmon_dev, &s->input_attr);
|
|
if (err)
|
|
return err;
|
|
err = device_create_file(data->hwmon_dev, &s->label_attr);
|
|
if (err)
|
|
return err;
|
|
err = device_create_file(data->hwmon_dev, &s->limit1_attr);
|
|
if (err)
|
|
return err;
|
|
err = device_create_file(data->hwmon_dev, &s->limit2_attr);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
err = device_create_file(data->hwmon_dev, &atk_name_attr);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void atk_remove_files(struct atk_data *data)
|
|
{
|
|
struct atk_sensor_data *s;
|
|
|
|
list_for_each_entry(s, &data->sensor_list, list) {
|
|
device_remove_file(data->hwmon_dev, &s->input_attr);
|
|
device_remove_file(data->hwmon_dev, &s->label_attr);
|
|
device_remove_file(data->hwmon_dev, &s->limit1_attr);
|
|
device_remove_file(data->hwmon_dev, &s->limit2_attr);
|
|
}
|
|
device_remove_file(data->hwmon_dev, &atk_name_attr);
|
|
}
|
|
|
|
static void atk_free_sensors(struct atk_data *data)
|
|
{
|
|
struct list_head *head = &data->sensor_list;
|
|
struct atk_sensor_data *s, *tmp;
|
|
|
|
list_for_each_entry_safe(s, tmp, head, list) {
|
|
kfree(s->acpi_name);
|
|
kfree(s);
|
|
}
|
|
}
|
|
|
|
static int atk_register_hwmon(struct atk_data *data)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
int err;
|
|
|
|
dev_dbg(dev, "registering hwmon device\n");
|
|
data->hwmon_dev = hwmon_device_register(dev);
|
|
if (IS_ERR(data->hwmon_dev))
|
|
return PTR_ERR(data->hwmon_dev);
|
|
|
|
dev_dbg(dev, "populating sysfs directory\n");
|
|
err = atk_create_files(data);
|
|
if (err)
|
|
goto remove;
|
|
|
|
return 0;
|
|
remove:
|
|
/* Cleanup the registered files */
|
|
atk_remove_files(data);
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
return err;
|
|
}
|
|
|
|
static int atk_probe_if(struct atk_data *data)
|
|
{
|
|
struct device *dev = &data->acpi_dev->dev;
|
|
acpi_handle ret;
|
|
acpi_status status;
|
|
int err = 0;
|
|
|
|
/* RTMP: read temperature */
|
|
status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret);
|
|
if (ACPI_SUCCESS(status))
|
|
data->rtmp_handle = ret;
|
|
else
|
|
dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
/* RVLT: read voltage */
|
|
status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret);
|
|
if (ACPI_SUCCESS(status))
|
|
data->rvlt_handle = ret;
|
|
else
|
|
dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
/* RFAN: read fan status */
|
|
status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret);
|
|
if (ACPI_SUCCESS(status))
|
|
data->rfan_handle = ret;
|
|
else
|
|
dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
/* Enumeration */
|
|
status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret);
|
|
if (ACPI_SUCCESS(status))
|
|
data->enumerate_handle = ret;
|
|
else
|
|
dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
/* De-multiplexer (read) */
|
|
status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret);
|
|
if (ACPI_SUCCESS(status))
|
|
data->read_handle = ret;
|
|
else
|
|
dev_dbg(dev, "method " METHOD_READ " not found: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
/* De-multiplexer (write) */
|
|
status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret);
|
|
if (ACPI_SUCCESS(status))
|
|
data->write_handle = ret;
|
|
else
|
|
dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n",
|
|
acpi_format_exception(status));
|
|
|
|
/*
|
|
* Check for hwmon methods: first check "old" style methods; note that
|
|
* both may be present: in this case we stick to the old interface;
|
|
* analysis of multiple DSDTs indicates that when both interfaces
|
|
* are present the new one (GGRP/GITM) is not functional.
|
|
*/
|
|
if (new_if)
|
|
dev_info(dev, "Overriding interface detection\n");
|
|
if (data->rtmp_handle &&
|
|
data->rvlt_handle && data->rfan_handle && !new_if)
|
|
data->old_interface = true;
|
|
else if (data->enumerate_handle && data->read_handle &&
|
|
data->write_handle)
|
|
data->old_interface = false;
|
|
else
|
|
err = -ENODEV;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int atk_add(struct acpi_device *device)
|
|
{
|
|
acpi_status ret;
|
|
int err;
|
|
struct acpi_buffer buf;
|
|
union acpi_object *obj;
|
|
struct atk_data *data;
|
|
|
|
dev_dbg(&device->dev, "adding...\n");
|
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->acpi_dev = device;
|
|
data->atk_handle = device->handle;
|
|
INIT_LIST_HEAD(&data->sensor_list);
|
|
data->disable_ec = false;
|
|
|
|
buf.length = ACPI_ALLOCATE_BUFFER;
|
|
ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL,
|
|
&buf, ACPI_TYPE_PACKAGE);
|
|
if (ret != AE_OK) {
|
|
dev_dbg(&device->dev, "atk: method MBIF not found\n");
|
|
} else {
|
|
obj = buf.pointer;
|
|
if (obj->package.count >= 2) {
|
|
union acpi_object *id = &obj->package.elements[1];
|
|
if (id->type == ACPI_TYPE_STRING)
|
|
dev_dbg(&device->dev, "board ID = %s\n",
|
|
id->string.pointer);
|
|
}
|
|
ACPI_FREE(buf.pointer);
|
|
}
|
|
|
|
err = atk_probe_if(data);
|
|
if (err) {
|
|
dev_err(&device->dev, "No usable hwmon interface detected\n");
|
|
goto out;
|
|
}
|
|
|
|
if (data->old_interface) {
|
|
dev_dbg(&device->dev, "Using old hwmon interface\n");
|
|
err = atk_enumerate_old_hwmon(data);
|
|
} else {
|
|
dev_dbg(&device->dev, "Using new hwmon interface\n");
|
|
err = atk_enumerate_new_hwmon(data);
|
|
}
|
|
if (err < 0)
|
|
goto out;
|
|
if (err == 0) {
|
|
dev_info(&device->dev,
|
|
"No usable sensor detected, bailing out\n");
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
err = atk_register_hwmon(data);
|
|
if (err)
|
|
goto cleanup;
|
|
|
|
atk_debugfs_init(data);
|
|
|
|
device->driver_data = data;
|
|
return 0;
|
|
cleanup:
|
|
atk_free_sensors(data);
|
|
out:
|
|
if (data->disable_ec)
|
|
atk_ec_ctl(data, 0);
|
|
kfree(data);
|
|
return err;
|
|
}
|
|
|
|
static int atk_remove(struct acpi_device *device, int type)
|
|
{
|
|
struct atk_data *data = device->driver_data;
|
|
dev_dbg(&device->dev, "removing...\n");
|
|
|
|
device->driver_data = NULL;
|
|
|
|
atk_debugfs_cleanup(data);
|
|
|
|
atk_remove_files(data);
|
|
atk_free_sensors(data);
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
|
|
if (data->disable_ec) {
|
|
if (atk_ec_ctl(data, 0))
|
|
dev_err(&device->dev, "Failed to disable EC\n");
|
|
}
|
|
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init atk0110_init(void)
|
|
{
|
|
int ret;
|
|
|
|
/* Make sure it's safe to access the device through ACPI */
|
|
if (!acpi_resources_are_enforced()) {
|
|
pr_err("Resources not safely usable due to acpi_enforce_resources kernel parameter\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (dmi_check_system(atk_force_new_if))
|
|
new_if = true;
|
|
|
|
ret = acpi_bus_register_driver(&atk_driver);
|
|
if (ret)
|
|
pr_info("acpi_bus_register_driver failed: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit atk0110_exit(void)
|
|
{
|
|
acpi_bus_unregister_driver(&atk_driver);
|
|
}
|
|
|
|
module_init(atk0110_init);
|
|
module_exit(atk0110_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|