Il Sun, Jan 04, 2009 at 11:13:30PM +0100, Hans de Goede ha scritto:
> Luca Tettamanti wrote:
>> It was simpler than I thought: I implemented per-attribute caching since
>> updating all the values may take a long time (here unconnected fans take
>> about 0.5s); the interval between reading is 1s (due to the high latency
>> of the fan sensor it probably makes little sense to lower this value).
>
> Erm, your current code is not correct (as in will not work under all
> circumstances). Your current code initializes last_updated to 0 for all
> new sensors, and you do not use a valid flag (as the other hwmon drivers
> do).
Ah, I see... how about this:
---
drivers/acpi/namespace/nsutils.c | 3
drivers/acpi/namespace/nsxfeval.c | 3
drivers/hwmon/Kconfig | 12
drivers/hwmon/Makefile | 1
drivers/hwmon/asus_atk0110.c | 1020 ++++++++++++++++++++++++++++++++++++++
include/acpi/acpixf.h | 2
6 files changed, 1037 insertions(+), 4 deletions(-)
Index: linux-2.6.git/drivers/acpi/namespace/nsutils.c
===================================================================
--- linux-2.6.git.orig/drivers/acpi/namespace/nsutils.c 2008-12-26 18:59:30.000000000 +0100
+++ linux-2.6.git/drivers/acpi/namespace/nsutils.c 2008-12-26 18:59:38.000000000 +0100
@@ -700,6 +700,7 @@
return (ACPI_CAST_PTR(struct acpi_namespace_node, handle));
}
+EXPORT_SYMBOL(acpi_ns_map_handle_to_node);
/*******************************************************************************
*
@@ -736,6 +737,7 @@
return ((acpi_handle) Node);
------------------------------------------------------*/
}
+EXPORT_SYMBOL(acpi_ns_convert_entry_to_handle);
/*******************************************************************************
*
@@ -875,6 +877,7 @@
ACPI_FREE(internal_path);
return_ACPI_STATUS(status);
}
+EXPORT_SYMBOL(acpi_ns_get_node);
/*******************************************************************************
*
Index: linux-2.6.git/drivers/acpi/namespace/nsxfeval.c
===================================================================
--- linux-2.6.git.orig/drivers/acpi/namespace/nsxfeval.c 2008-12-26 18:59:30.000000000 +0100
+++ linux-2.6.git/drivers/acpi/namespace/nsxfeval.c 2008-12-26 18:59:38.000000000 +0100
@@ -52,7 +52,6 @@
/* Local prototypes */
static void acpi_ns_resolve_references(struct acpi_evaluate_info *info);
-#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_evaluate_object_typed
@@ -146,7 +145,7 @@
}
ACPI_EXPORT_SYMBOL(acpi_evaluate_object_typed)
-#endif /* ACPI_FUTURE_USAGE */
+
/*******************************************************************************
*
* FUNCTION: acpi_evaluate_object
Index: linux-2.6.git/include/acpi/acpixf.h
===================================================================
--- linux-2.6.git.orig/include/acpi/acpixf.h 2008-12-26 18:59:30.000000000 +0100
+++ linux-2.6.git/include/acpi/acpixf.h 2008-12-26 18:59:38.000000000 +0100
@@ -169,14 +169,12 @@
struct acpi_object_list *parameter_objects,
struct acpi_buffer *return_object_buffer);
-#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_evaluate_object_typed(acpi_handle object,
acpi_string pathname,
struct acpi_object_list *external_params,
struct acpi_buffer *return_buffer,
acpi_object_type return_type);
-#endif
acpi_status
acpi_get_object_info(acpi_handle handle, struct acpi_buffer *return_buffer);
Index: linux-2.6.git/drivers/hwmon/asus_atk0110.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.git/drivers/hwmon/asus_atk0110.c 2009-01-05 17:56:25.255128135 +0100
@@ -0,0 +1,1020 @@
+/*
+ * Copyright (C) 2007-2009 Luca Tettamanti <kronos.it at gmail.com>
+ *
+ * This file is released under the GPLv2
+ * See COPYING in the top level directory of the kernel tree.
+ */
+
+#define DEBUG
+
+#include <linux/kernel.h>
+#include <linux/hwmon.h>
+#include <linux/list.h>
+#include <linux/module.h>
+
+#include <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acpi_drivers.h>
+#include <acpi/acpi_bus.h>
+
+
+#define ATK_HID "ATK0110"
+#define ATK_DRV "atk-hwmon"
+#define ASOC "_SB.PCI0.SBRG.ASOC"
+
+#define CACHE_TIME HZ
+
+#define BOARD_ID "MBIF"
+#define METHOD_ENUMERATE "GGRP"
+#define METHOD_READ "GITM"
+#define METHOD_WRITE "SITM"
+#define METHOD_OLD_READ_TMP "RTMP"
+#define METHOD_OLD_READ_VLT "RVLT"
+#define METHOD_OLD_READ_FAN "RFAN"
+#define METHOD_OLD_ENUM_TMP "TSIF"
+#define METHOD_OLD_ENUM_VLT "VSIF"
+#define METHOD_OLD_ENUM_FAN "FSIF"
+
+#define ATK_MUX_HWMON 0x00000006ULL
+
+#define ATK_CLASS_MASK 0xff000000ULL
+#define ATK_CLASS_FREQ_CTL 0x03000000ULL
+#define ATK_CLASS_FAN_CTL 0x04000000ULL
+#define ATK_CLASS_HWMON 0x06000000ULL
+
+#define ATK_TYPE_MASK 0x00ff0000ULL
+#define HWMON_TYPE_VOLT 0x00020000ULL
+#define HWMON_TYPE_TEMP 0x00030000ULL
+#define HWMON_TYPE_FAN 0x00040000ULL
+
+#define HWMON_SENSORS_ID_MASK 0x0000ffffULL
+
+enum atk_pack_member {
+ HWMON_PACK_FLAGS,
+ HWMON_PACK_NAME,
+ HWMON_PACK_LIMIT1,
+ HWMON_PACK_LIMIT2,
+ HWMON_PACK_ENABLE
+};
+
+/* New package format */
+#define _HWMON_NEW_PACK_SIZE 7
+#define _HWMON_NEW_PACK_FLAGS 0
+#define _HWMON_NEW_PACK_NAME 1
+#define _HWMON_NEW_PACK_UNK1 2
+#define _HWMON_NEW_PACK_UNK2 3
+#define _HWMON_NEW_PACK_LIMIT1 4
+#define _HWMON_NEW_PACK_LIMIT2 5
+#define _HWMON_NEW_PACK_ENABLE 6
+
+/* Old package format */
+#define _HWMON_OLD_PACK_SIZE 5
+#define _HWMON_OLD_PACK_FLAGS 0
+#define _HWMON_OLD_PACK_NAME 1
+#define _HWMON_OLD_PACK_LIMIT1 2
+#define _HWMON_OLD_PACK_LIMIT2 3
+#define _HWMON_OLD_PACK_ENABLE 4
+
+
+struct atk_data {
+ struct device *hwmon_dev;
+ acpi_handle atk_handle;
+ struct acpi_device *acpi_dev;
+
+ bool is_valid;
+ bool old_interface;
+
+ /* old interface */
+ acpi_handle rtmp_handle;
+ acpi_handle rvlt_handle;
+ acpi_handle rfan_handle;
+ /* new inteface */
+ acpi_handle enumerate_handle;
+ acpi_handle read_handle;
+
+ int voltage_count;
+ int temperature_count;
+ int fan_count;
+ struct list_head sensor_list;
+};
+
+
+typedef ssize_t (*sysfs_show_func)(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+typedef ssize_t (*sysfs_store_func)(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count);
+
+static const struct acpi_device_id atk_ids[] = {
+ {ATK_HID, 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, atk_ids);
+
+#define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */
+
+struct atk_sensor_data {
+ struct list_head list;
+ struct atk_data *data;
+ struct device_attribute label_attr;
+ struct device_attribute input_attr;
+ struct device_attribute limit1_attr;
+ struct device_attribute limit2_attr;
+ char label_attr_name[ATTR_NAME_SIZE];
+ char input_attr_name[ATTR_NAME_SIZE];
+ char limit1_attr_name[ATTR_NAME_SIZE];
+ char limit2_attr_name[ATTR_NAME_SIZE];
+ u64 id;
+ u64 type;
+ u64 limit1;
+ u64 limit2;
+ u64 cached_value;
+ unsigned long last_updated; /* in jiffies */
+ char const *acpi_name;
+};
+
+struct atk_acpi_buffer_u64 {
+ union acpi_object buf;
+ u64 value;
+};
+
+static int atk_add(struct acpi_device *device);
+static int atk_remove(struct acpi_device *device, int type);
+static void atk_print_sensor(struct atk_data *data, union acpi_object *obj);
+static int atk_read_value(struct atk_sensor_data *sensor, u64 *value);
+static void atk_free_sensors(struct atk_data *data);
+
+static struct acpi_driver atk_driver = {
+ .name = ATK_HID,
+ .class = "hwmon",
+ .ids = atk_ids,
+ .ops = {
+ .add = atk_add,
+ .remove = atk_remove,
+ },
+};
+
+#define input_to_atk_sensor(attr) \
+ container_of(attr, struct atk_sensor_data, input_attr)
+
+#define label_to_atk_sensor(attr) \
+ container_of(attr, struct atk_sensor_data, label_attr)
+
+#define limit1_to_atk_sensor(attr) \
+ container_of(attr, struct atk_sensor_data, limit1_attr)
+
+#define limit2_to_atk_sensor(attr) \
+ container_of(attr, struct atk_sensor_data, limit2_attr)
+
+
+static ssize_t atk_input_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atk_sensor_data *s = input_to_atk_sensor(attr);
+ u64 value;
+ int err;
+
+ err = atk_read_value(s, &value);
+ if (err)
+ return err;
+
+ if (s->type == HWMON_TYPE_TEMP)
+ /* ACPI returns decidegree */
+ value *= 100;
+
+ return sprintf(buf, "%llu\n", value);
+}
+
+static ssize_t atk_label_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atk_sensor_data *s = label_to_atk_sensor(attr);
+
+ return sprintf(buf, "%s\n", s->acpi_name);
+}
+
+static ssize_t atk_limit1_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atk_sensor_data *s = limit1_to_atk_sensor(attr);
+ u64 value = s->limit1;
+
+ if (s->type == HWMON_TYPE_TEMP)
+ value *= 100;
+
+ return sprintf(buf, "%lld\n", value);
+}
+
+static ssize_t atk_limit2_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct atk_sensor_data *s = limit2_to_atk_sensor(attr);
+ u64 value = s->limit2;
+
+ if (s->type == HWMON_TYPE_TEMP)
+ value *= 100;
+
+ return sprintf(buf, "%lld\n", value);
+}
+
+static ssize_t atk_name_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "atk0110\n");
+}
+static struct device_attribute atk_name_attr = __ATTR(name, 0444, atk_name_show, NULL);
+
+static void atk_init_attribute(struct device_attribute *attr, char *name,
+ sysfs_show_func show)
+{
+ attr->attr.name = name;
+ attr->attr.mode = 0444;
+ attr->show = show;
+ attr->store = NULL;
+}
+
+
+static union acpi_object *atk_get_pack_member(struct atk_data *data,
+ union acpi_object *pack,
+ enum atk_pack_member m)
+{
+ bool old_if = data->old_interface;
+ int offset;
+
+ switch (m) {
+ case HWMON_PACK_FLAGS:
+ offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS;
+ break;
+ case HWMON_PACK_NAME:
+ offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME;
+ break;
+ case HWMON_PACK_LIMIT1:
+ offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : _HWMON_NEW_PACK_LIMIT1;
+ break;
+ case HWMON_PACK_LIMIT2:
+ offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : _HWMON_NEW_PACK_LIMIT2;
+ break;
+ case HWMON_PACK_ENABLE:
+ offset = old_if ? _HWMON_OLD_PACK_ENABLE : _HWMON_NEW_PACK_ENABLE;
+ break;
+ default:
+ return NULL;
+ }
+
+ return &pack->package.elements[offset];
+}
+
+
+/* New package format is:
+ * - flag (int)
+ * class - used for de-muxing the request to the correct GITn
+ * type (volt, temp, fan)
+ * sensor id |
+ * sensor id - used for de-muxing the request _inside_ the GITn
+ * - name (str)
+ * - unknown (int)
+ * - unknown (int)
+ * - limit1 (int)
+ * - limit2 (int)
+ * - enable (int)
+ *
+ * The old package has the same format but it's missing the two unknown fields.
+ */
+static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj)
+{
+ struct device *dev = &data->acpi_dev->dev;
+ union acpi_object *tmp;
+ bool old_if = data->old_interface;
+ int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : _HWMON_NEW_PACK_SIZE;
+
+ if (obj->type != ACPI_TYPE_PACKAGE) {
+ dev_warn(dev, "Invalid type: %d\n", obj->type);
+ return -EINVAL;
+ }
+
+ if (obj->package.count != expected_size) {
+ dev_warn(dev, "Invalid package size: %d, expected: %d\n",
+ obj->package.count, expected_size);
+ return -EINVAL;
+ }
+
+ tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS);
+ if (tmp->type != ACPI_TYPE_INTEGER) {
+ dev_warn(dev, "Invalid type (flag): %d\n", tmp->type);
+ return -EINVAL;
+ }
+
+ tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME);
+ if (tmp->type != ACPI_TYPE_STRING) {
+ dev_warn(dev, "Invalid type (name): %d\n", tmp->type);
+ return -EINVAL;
+ }
+
+ /* Don't check... we don't know what they're useful for anyway */
+#if 0
+ tmp = &obj->package.elements[HWMON_PACK_UNK1];
+ if (tmp->type != ACPI_TYPE_INTEGER) {
+ dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type);
+ return -EINVAL;
+ }
+
+ tmp = &obj->package.elements[HWMON_PACK_UNK2];
+ if (tmp->type != ACPI_TYPE_INTEGER) {
+ dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type);
+ return -EINVAL;
+ }
+#endif
+
+ tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1);
+ if (tmp->type != ACPI_TYPE_INTEGER) {
+ dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type);
+ return -EINVAL;
+ }
+
+ tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2);
+ if (tmp->type != ACPI_TYPE_INTEGER) {
+ dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type);
+ return -EINVAL;
+ }
+
+ tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE);
+ if (tmp->type != ACPI_TYPE_INTEGER) {
+ dev_warn(dev, "Invalid type (enable): %d\n", tmp->type);
+ return -EINVAL;
+ }
+
+ atk_print_sensor(data, obj);
+
+ return 0;
+}
+
+static char const *atk_sensor_type(union acpi_object *flags)
+{
+ u64 type = flags->integer.value & ATK_TYPE_MASK;
+ char const *what;
+
+ switch (type) {
+ case HWMON_TYPE_VOLT:
+ what = "voltage";
+ break;
+ case HWMON_TYPE_TEMP:
+ what = "temperature";
+ break;
+ case HWMON_TYPE_FAN:
+ what = "fan";
+ break;
+ default:
+ what = "unknown";
+ break;
+ }
+
+ return what;
+}
+
+static void atk_print_sensor(struct atk_data *data, union acpi_object *obj)
+{
+#ifdef DEBUG
+ 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;
+ char const *what;
+
+ 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);
+ enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE);
+
+ what = atk_sensor_type(flags);
+
+ dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what,
+ flags->integer.value,
+ name->string.pointer,
+ limit1->integer.value, limit2->integer.value,
+ enable->integer.value ? "enabled" : "disabled");
+#endif
+}
+
+static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value)
+{
+ struct atk_data *data = sensor->data;
+ struct device *dev = &data->acpi_dev->dev;
+ struct acpi_object_list params;
+ union acpi_object id;
+ acpi_status status;
+ acpi_handle method;
+
+ switch (sensor->type) {
+ case HWMON_TYPE_VOLT:
+ method = data->rvlt_handle;
+ break;
+ case HWMON_TYPE_TEMP:
+ method = data->rtmp_handle;
+ break;
+ case HWMON_TYPE_FAN:
+ method = data->rfan_handle;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ id.type = ACPI_TYPE_INTEGER;
+ id.integer.value = sensor->id;
+
+ params.count = 1;
+ params.pointer = &id;
+
+ status = acpi_evaluate_integer(method, NULL, ¶ms, value);
+ if (status != AE_OK) {
+ dev_warn(dev, "%s: ACPI exception: %s\n", __func__,
+ acpi_format_exception(status));
+ return -EIO;
+ }
+
+ return 0;
+}
+
+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;
+ struct acpi_object_list params;
+ struct acpi_buffer ret;
+ union acpi_object id;
+ struct atk_acpi_buffer_u64 tmp;
+ acpi_status status;
+ union acpi_object *o;
+ int i;
+
+ id.type = ACPI_TYPE_INTEGER;
+ id.integer.value = sensor->id;
+
+ params.count = 1;
+ params.pointer = &id;
+
+ tmp.buf.type = ACPI_TYPE_BUFFER;
+ tmp.buf.buffer.pointer = (u8 *)&tmp.value;
+ tmp.buf.buffer.length = sizeof(u64);
+ ret.length = sizeof(tmp);
+ ret.pointer = &tmp;
+
+ status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms,
+ &ret, ACPI_TYPE_BUFFER);
+ if (status != AE_OK) {
+ dev_warn(dev, "%s: ACPI exception: %s\n", __func__,
+ acpi_format_exception(status));
+ return -EIO;
+ }
+
+ o = ret.pointer;
+ dev_dbg(dev, "type = %d\n", o->type);
+ dev_dbg(dev, "size = %d\n", o->buffer.length);
+
+ for (i = 0; i < o->buffer.length; i++)
+ dev_dbg(dev, " [%#x] %d\n", (u32)(o->buffer.pointer[i]),
+ (u32)(o->buffer.pointer[i]));
+
+ /* Return buffer format:
+ * [0-3] "value" is valid flag
+ * [4-7] value
+ */
+ if (!(tmp.value & 0xffffffff)) {
+ /* The reading is not valid, possible causes:
+ * - sensor failure
+ * - enumeration was FUBAR (and we didn't notice)
+ */
+ dev_info(dev, "Failure: %#llx\n", tmp.value);
+ return -EIO;
+ }
+
+ *value = (tmp.value & 0xffffffff00000000ULL) >> 32;
+
+ return 0;
+}
+
+static int atk_read_value(struct atk_sensor_data *sensor, u64 *value)
+{
+ int err;
+
+ if (!sensor->data->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->data->is_valid = true;
+ sensor->last_updated = jiffies;
+ sensor->cached_value = *value;
+ } else {
+ *value = sensor->cached_value;
+ err = 0;
+ }
+
+ return err;
+}
+
+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;
+
+ 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;
+ break;
+ case HWMON_TYPE_TEMP:
+ base_name = "temp";
+ limit1_name = "max";
+ limit2_name = "crit";
+ num = &data->temperature_count;
+ break;
+ case HWMON_TYPE_FAN:
+ base_name = "fan";
+ limit1_name = "min";
+ limit2_name = "max";
+ num = &data->fan_count;
+ 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;
+ sensor->limit2 = limit2->integer.value;
+
+ snprintf(sensor->input_attr_name, ATTR_NAME_SIZE,
+ "%s%d_input", base_name, *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, *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, *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, *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->acpi_name);
+ 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_enumerate_new_hwmon(struct atk_data *data)
+{
+ 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;
+ int err;
+ int i;
+
+ dev_dbg(dev, "Enumerating hwmon sensors\n");
+
+ id.type = ACPI_TYPE_INTEGER;
+ id.integer.value = ATK_MUX_HWMON;
+ params.count = 1;
+ params.pointer = &id;
+
+ buf.length = ACPI_ALLOCATE_BUFFER;
+ ret = acpi_evaluate_object_typed(data->enumerate_handle, NULL, ¶ms,
+ &buf, ACPI_TYPE_PACKAGE);
+ if (ret != AE_OK) {
+ dev_warn(dev, METHOD_ENUMERATE ": ACPI exception: %s\n",
+ acpi_format_exception(ret));
+ return -ENODEV;
+ }
+
+ /* Result must be a package */
+ pack = buf.pointer;
+
+ if (pack->package.count < 1) {
+ dev_dbg(dev, "%s: hwmon package is too small: %d\n", __func__,
+ pack->package.count);
+ err = -EINVAL;
+ goto out;
+ }
+
+ 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;
+
+out:
+ ACPI_FREE(buf.pointer);
+ 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_check_old_if(struct atk_data *data, struct acpi_namespace_node *ns)
+{
+ struct device *dev = &data->acpi_dev->dev;
+ struct acpi_namespace_node *ret;
+ acpi_status status;
+
+ /* RTMP: read temperature */
+ status = acpi_ns_get_node(ns, METHOD_OLD_READ_TMP, ACPI_NS_NO_UPSEARCH, &ret);
+ if (status != AE_OK) {
+ dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n",
+ acpi_format_exception(status));
+ return -ENODEV;
+ }
+ data->rtmp_handle = acpi_ns_convert_entry_to_handle(ret);
+
+ /* RVLT: read voltage */
+ status = acpi_ns_get_node(ns, METHOD_OLD_READ_VLT, ACPI_NS_NO_UPSEARCH, &ret);
+ if (status != AE_OK) {
+ dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n",
+ acpi_format_exception(status));
+ return -ENODEV;
+ }
+ data->rvlt_handle = acpi_ns_convert_entry_to_handle(ret);
+
+ /* RFAN: read fan status */
+ status = acpi_ns_get_node(ns, METHOD_OLD_READ_FAN, ACPI_NS_NO_UPSEARCH, &ret);
+ if (status != AE_OK) {
+ dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n",
+ acpi_format_exception(status));
+ return -ENODEV;
+ }
+ data->rfan_handle = acpi_ns_convert_entry_to_handle(ret);
+
+ return 0;
+}
+
+static int atk_check_new_if(struct atk_data *data, struct acpi_namespace_node *ns)
+{
+ struct device *dev = &data->acpi_dev->dev;
+ struct acpi_namespace_node *ret;
+ acpi_status status;
+
+ /* Enumeration */
+ status = acpi_ns_get_node(ns, METHOD_ENUMERATE, ACPI_NS_NO_UPSEARCH, &ret);
+ if (status != AE_OK) {
+ dev_dbg(dev, "method " METHOD_ENUMERATE " not found\n");
+ return -ENODEV;
+ }
+ data->enumerate_handle = acpi_ns_convert_entry_to_handle(ret);
+
+ /* De-multiplexer (read) */
+ status = acpi_ns_get_node(ns, METHOD_READ, ACPI_NS_NO_UPSEARCH, &ret);
+ if (status != AE_OK) {
+ dev_dbg(dev, "method " METHOD_READ " not found\n");
+ return -ENODEV;
+ }
+ data->read_handle = acpi_ns_convert_entry_to_handle(ret);
+
+ return 0;
+}
+
+static int atk_add(struct acpi_device *device)
+{
+ acpi_status ret;
+ int err;
+ struct acpi_buffer buf;
+ union acpi_object *obj;
+ struct acpi_namespace_node *search_ns;
+ 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);
+
+ 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");
+ err = -ENODEV;
+ goto out;
+ }
+
+ obj = buf.pointer;
+ if (obj->package.count >= 2 &&
+ obj->package.elements[1].type == ACPI_TYPE_STRING) {
+ dev_dbg(&device->dev, "board ID = %s\n",
+ obj->package.elements[1].string.pointer);
+ }
+ ACPI_FREE(buf.pointer);
+
+ /* Check for hwmon methods */
+ search_ns = acpi_ns_map_handle_to_node(device->handle);
+ if (!search_ns) {
+ err = -ENODEV;
+ goto out;
+ }
+
+ /* 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.
+ */
+ err = atk_check_old_if(data, search_ns);
+ if (!err) {
+ dev_dbg(&device->dev, "Using old hwmon interface\n");
+ data->old_interface = true;
+ } else {
+ err = atk_check_new_if(data, search_ns);
+ if (err)
+ goto out;
+
+ dev_dbg(&device->dev, "Using new hwmon interface\n");
+ data->old_interface = false;
+ }
+
+ if (data->old_interface)
+ err = atk_enumerate_old_hwmon(data);
+ else
+ 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;
+
+ device->driver_data = data;
+ return 0;
+cleanup:
+ atk_free_sensors(data);
+out:
+ 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_remove_files(data);
+ atk_free_sensors(data);
+ hwmon_device_unregister(data->hwmon_dev);
+
+ kfree(data);
+
+ return 0;
+}
+
+static int atk0110_init(void)
+{
+ int ret;
+
+ ret = acpi_bus_register_driver(&atk_driver);
+ if (ret)
+ pr_info("atk: acpi_bus_register_driver failed: %d\n", ret);
+
+ return ret;
+}
+
+static void atk0110_exit(void)
+{
+ acpi_bus_unregister_driver(&atk_driver);
+}
+
+module_init(atk0110_init);
+module_exit(atk0110_exit);
+
+MODULE_LICENSE("GPL");
Index: linux-2.6.git/drivers/hwmon/Kconfig
===================================================================
--- linux-2.6.git.orig/drivers/hwmon/Kconfig 2008-12-26 18:59:30.000000000 +0100
+++ linux-2.6.git/drivers/hwmon/Kconfig 2008-12-26 18:59:38.000000000 +0100
@@ -238,6 +238,18 @@
This driver can also be built as a module. If so, the module
will be called asb100.
+config SENSORS_ATK0110
+ tristate "ASUS ATK0110 ACPI hwmon"
+ depends on X86 && ACPI && EXPERIMENTAL
+ help
+ If you say yes here you get support for the ACPI hardware
+ monitoring interface found in many ASUS motherboards. This
+ driver will provide readings of fans, voltages and temperatures
+ through the system firmware.
+
+ This driver can also be built as a module. If so, the module
+ will be called asus_atk0110.
+
config SENSORS_ATXP1
tristate "Attansic ATXP1 VID controller"
depends on I2C && EXPERIMENTAL
Index: linux-2.6.git/drivers/hwmon/Makefile
===================================================================
--- linux-2.6.git.orig/drivers/hwmon/Makefile 2008-12-26 18:59:30.000000000 +0100
+++ linux-2.6.git/drivers/hwmon/Makefile 2008-12-26 18:59:38.000000000 +0100
@@ -30,6 +30,7 @@
obj-$(CONFIG_SENSORS_ADT7473) += adt7473.o
obj-$(CONFIG_SENSORS_APPLESMC) += applesmc.o
obj-$(CONFIG_SENSORS_AMS) += ams/
+obj-$(CONFIG_SENSORS_ATK0110) += asus_atk0110.o
obj-$(CONFIG_SENSORS_ATXP1) += atxp1.o
obj-$(CONFIG_SENSORS_CORETEMP) += coretemp.o
obj-$(CONFIG_SENSORS_DME1737) += dme1737.o
Luca
--
42
