From: Zhang Rui <rui.zhang@xxxxxxxxx>
Add ACPI thermal_zone sysfs interface.
Required attributes:
Attribute Mode Description
state RO state of the current thermal zone
(ok/passive/active[x]/hot/critical)
cooling_mode RW the cooling policy of the current thermal zone.
0x00 = active, 0x01 = passive, 0xff = critical.
polling_freq RW
temperature RO temperature of the current thermal zone.(celsius)
critical_temp RW critical trip point where OSPM must perform a
critical shutdown
Optional attributes:
Attribute Mode Description
hot_temp RW critical trip point where OSPM may choose to
transition the system into S4
passive_temp RW the passive cooling policy threshold value
passive_tc1 RO thermal constant for passive cooling
passive_tc2 RO thermal constant for passive cooling
passive_tsp RO thermal sampling period for passive cooling
active0_temp RW active cooling policy threshold value
...
active9_temp RW active cooling policy threshold value
Syslinks to cooling devices(dynamic, optional):
passive_cooling_device0
...
passive_cooling_device9
active0_cooling_device0
...
active0_cooling_device9
...
...
active9_cooling_device0
...
active9_cooling_device9
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
---
drivers/acpi/thermal.c | 713 ++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 622 insertions(+), 91 deletions(-)
Index: linux-2.6.21-rc4-mm1/drivers/acpi/thermal.c
===================================================================
--- linux-2.6.21-rc4-mm1.orig/drivers/acpi/thermal.c 2007-03-20 16:16:23.000000000 +0800
+++ linux-2.6.21-rc4-mm1/drivers/acpi/thermal.c 2007-03-20 16:30:21.000000000 +0800
@@ -83,19 +83,6 @@ MODULE_PARM_DESC(tzp, "Thermal zone poll
static int acpi_thermal_add(struct acpi_device *device);
static int acpi_thermal_remove(struct acpi_device *device, int type);
static int acpi_thermal_resume(struct acpi_device *device);
-static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
-static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
-static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
-static ssize_t acpi_thermal_write_trip_points(struct file *,
- const char __user *, size_t,
- loff_t *);
-static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file);
-static ssize_t acpi_thermal_write_cooling_mode(struct file *,
- const char __user *, size_t,
- loff_t *);
-static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file);
-static ssize_t acpi_thermal_write_polling(struct file *, const char __user *,
- size_t, loff_t *);
static struct acpi_driver acpi_thermal_driver = {
.name = "thermal",
@@ -176,44 +163,6 @@ struct acpi_thermal {
struct timer_list timer;
};
-static const struct file_operations acpi_thermal_state_fops = {
- .open = acpi_thermal_state_open_fs,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations acpi_thermal_temp_fops = {
- .open = acpi_thermal_temp_open_fs,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations acpi_thermal_trip_fops = {
- .open = acpi_thermal_trip_open_fs,
- .read = seq_read,
- .write = acpi_thermal_write_trip_points,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations acpi_thermal_cooling_fops = {
- .open = acpi_thermal_cooling_open_fs,
- .read = seq_read,
- .write = acpi_thermal_write_cooling_mode,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations acpi_thermal_polling_fops = {
- .open = acpi_thermal_polling_open_fs,
- .read = seq_read,
- .write = acpi_thermal_write_polling,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
/* --------------------------------------------------------------------------
Thermal Zone Management
-------------------------------------------------------------------------- */
@@ -305,15 +254,25 @@ static int acpi_thermal_set_cooling_mode
return 0;
}
+static int acpi_thermal_cooling_device_update(struct acpi_thermal *thermal, int state,
+ struct acpi_handle_list *new_devices);
+static int acpi_thermal_sysfs_update(struct acpi_thermal *thermal, struct acpi_thermal_state *old_state);
static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
int i = 0;
+ struct acpi_handle_list devices;
+ struct acpi_thermal_state state;
if (!tz)
return -EINVAL;
+ state.hot = tz->trips.hot.flags.valid;
+ state.passive= tz->trips.passive.flags.valid;
+ for (state.active_index = 0; state.active_index < ACPI_THERMAL_MAX_ACTIVE &&
+ tz->trips.active[state.active_index].flags.valid; state.active_index ++);
+
/* Critical Shutdown (required) */
status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL,
@@ -374,7 +333,7 @@ static int acpi_thermal_get_trip_points(
status =
acpi_evaluate_reference(tz->device->handle, "_PSL", NULL,
- &tz->trips.passive.devices);
+ &devices);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
@@ -386,6 +345,13 @@ static int acpi_thermal_get_trip_points(
tz->trips.passive.temperature));
}
+ if (!tz->trips.passive.flags.valid)
+ devices.count = 0;
+ status = acpi_thermal_cooling_device_update(tz, -1, &devices);
+ if (status)
+ ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+ "Passive cooling device update failed!\n"));
+
/* Active: Fans, etc. (optional) */
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
@@ -396,22 +362,35 @@ static int acpi_thermal_get_trip_points(
acpi_evaluate_integer(tz->device->handle, name, NULL,
&tz->trips.active[i].temperature);
if (ACPI_FAILURE(status))
- break;
-
- name[2] = 'L';
- status =
- acpi_evaluate_reference(tz->device->handle, name, NULL,
- &tz->trips.active[i].devices);
- if (ACPI_SUCCESS(status)) {
- tz->trips.active[i].flags.valid = 1;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Found active threshold [%d]:[%lu]\n",
- i, tz->trips.active[i].temperature));
- } else
- ACPI_EXCEPTION((AE_INFO, status,
- "Invalid active threshold [%d]", i));
+ tz->trips.active[i].flags.valid = 0;
+ else {
+ name[2] = 'L';
+ status =
+ acpi_evaluate_reference(tz->device->handle, name, NULL,
+ &devices);
+ if (ACPI_SUCCESS(status)) {
+ tz->trips.active[i].flags.valid = 1;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Found active threshold [%d]:[%lu]\n",
+ i, tz->trips.active[i].temperature));
+ } else {
+ tz->trips.active[i].flags.valid = 0;
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Invalid active threshold [%d]", i));
+ }
+ }
+ if (!tz->trips.active[i].flags.valid)
+ devices.count = 0;
+ status = acpi_thermal_cooling_device_update(tz, i, &devices);
+ if (status)
+ ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+ "Active[%d] cooling device update failed!\n", i));
}
+ if(acpi_thermal_sysfs_update(tz, &state))
+ ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+ "Trip point sysfs update failed!\n"));
+
return 0;
}
@@ -771,9 +750,495 @@ static void acpi_thermal_check(void *dat
}
/* --------------------------------------------------------------------------
- FS Interface (/proc)
+ FS Interface (/sys)
-------------------------------------------------------------------------- */
+static ssize_t
+acpi_thermal_state_show(struct acpi_device *dev, char *buf)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+ int result = 0;
+
+ if (!thermal->state.critical && !thermal->state.hot && !thermal->state.passive
+ && !thermal->state.active)
+ result = sprintf(buf, "ok\n");
+ else {
+ if (thermal->state.critical)
+ result += sprintf(buf, "critical ");
+ if (thermal->state.hot)
+ result += sprintf(buf, "hot ");
+ if (thermal->state.passive)
+ result += sprintf(buf, "passive ");
+ if (thermal->state.active)
+ result += sprintf(buf, "active[%d]", thermal->state.active_index);
+ sprintf(buf, "\n");
+ }
+ return result;
+}
+static ACPI_DEVICE_ATTR(state, 0444, acpi_thermal_state_show, NULL);
+
+static ssize_t
+acpi_thermal_temperature_show(struct acpi_device *dev, char *buf)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+ int result = 0;
+
+ result = acpi_thermal_get_temperature(thermal);
+ if (!result)
+ return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(thermal->temperature));
+ else
+ return result;
+}
+static ACPI_DEVICE_ATTR(temperature, 0444, acpi_thermal_temperature_show, NULL);
+
+static ssize_t
+acpi_thermal_cooling_mode_show(struct acpi_device *dev, char *buf)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+
+ if (!thermal)
+ return -EINVAL;
+
+ if (thermal->flags.cooling_mode)
+ return sprintf(buf, "0x%02x\n", thermal->cooling_mode);
+
+ return 0;
+}
+
+static ssize_t
+acpi_thermal_cooling_mode_store(struct acpi_device *dev, const char *buf, size_t count)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+ u32 mode;
+ char *end;
+ int ret = 0;
+
+ mode = simple_strtoul(buf, &end, 0);
+ if (*end == '\0')
+ return -EINVAL;
+
+ if (thermal->flags.cooling_mode){
+ ret = acpi_thermal_set_cooling_mode(thermal, mode);
+ if (ret)
+ return ret;
+ acpi_thermal_check(thermal);
+ return count;
+ }
+ else
+ return -ENODEV;
+}
+static ACPI_DEVICE_ATTR(cooling_mode, 0644, acpi_thermal_cooling_mode_show, acpi_thermal_cooling_mode_store);
+
+static ssize_t
+acpi_thermal_polling_freq_show(struct acpi_device *dev, char *buf)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+
+ if (thermal->polling_frequency)
+ return sprintf(buf, "%lu\n", (thermal->polling_frequency / 10));
+
+ return 0;
+}
+
+static ssize_t
+acpi_thermal_polling_freq_store(struct acpi_device *dev, const char *buf, size_t count)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+ unsigned long freq;
+ char * end;
+ int ret = 0;
+
+ freq = simple_strtoul(buf, &end, 0);
+ if (*end == '\0')
+ return -EINVAL;
+
+ ret = acpi_thermal_set_polling(thermal, freq);
+ if (ret)
+ return ret;
+
+ acpi_thermal_check(thermal);
+ return count;
+}
+static ACPI_DEVICE_ATTR(polling_freq, 0644, acpi_thermal_polling_freq_show, acpi_thermal_polling_freq_store);
+
+static ssize_t
+acpi_thermal_passive_tc1_show(struct acpi_device *dev, char *buf)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+
+ if (!thermal)
+ return -EINVAL;
+
+ if (thermal->trips.passive.flags.valid)
+ return sprintf(buf, "%ld\n", thermal->trips.passive.tc1);
+ else
+ return -ENODEV;
+}
+static ACPI_DEVICE_ATTR(passive_tc1, 0444, acpi_thermal_passive_tc1_show, NULL);
+
+static ssize_t
+acpi_thermal_passive_tc2_show(struct acpi_device *dev, char *buf)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+
+ if (!thermal)
+ return -EINVAL;
+
+ if (thermal->trips.passive.flags.valid)
+ return sprintf(buf, "%ld\n", thermal->trips.passive.tc2);
+ else
+ return -ENODEV;
+}
+static ACPI_DEVICE_ATTR(passive_tc2, 0444, acpi_thermal_passive_tc2_show, NULL);
+
+static ssize_t
+acpi_thermal_passive_tsp_show(struct acpi_device *dev, char *buf)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(dev);
+
+ if (!thermal)
+ return -EINVAL;
+
+ if (thermal->trips.passive.flags.valid)
+ return sprintf(buf, "%ld\n", thermal->trips.passive.tsp);
+ else
+ return -ENODEV;
+}
+static ACPI_DEVICE_ATTR(passive_tsp, 0444, acpi_thermal_passive_tsp_show, NULL);
+
+typedef ssize_t (*trip_point_show)(struct acpi_thermal *thermal,
+ int type, int state, char*buf);
+typedef ssize_t (*trip_point_store)(struct acpi_thermal *thermal, int type,
+ int state, const char *buf, size_t count);
+
+struct acpi_thermal_trip_point_attr {
+ struct device_attribute attr;
+ int type;
+ int state;
+ trip_point_show show;
+ trip_point_store store;
+};
+
+#define ACPI_THERMAL_TRIP_POINT_CRITICAL 0
+#define ACPI_THERMAL_TRIP_POINT_HOT 1
+#define ACPI_THERMAL_TRIP_POINT_PASSIVE 2
+#define ACPI_THERMAL_TRIP_POINT_ACTIVE 3
+
+static ssize_t
+acpi_thermal_trip_point_show(struct acpi_thermal *thermal,
+ int type, int state, char*buf)
+{
+ ssize_t result = -ENODEV;
+
+ switch(type) {
+ case ACPI_THERMAL_TRIP_POINT_CRITICAL:
+ if (thermal->trips.critical.flags.valid)
+ result = sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(thermal->trips.critical.temperature));
+ break;
+ case ACPI_THERMAL_TRIP_POINT_HOT:
+ if (thermal->trips.hot.flags.valid)
+ result = sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(thermal->trips.hot.temperature));
+ break;
+ case ACPI_THERMAL_TRIP_POINT_PASSIVE:
+ if (thermal->trips.passive.flags.valid)
+ result = sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(thermal->trips.passive.temperature));
+ break;
+ case ACPI_THERMAL_TRIP_POINT_ACTIVE:
+ if (thermal->trips.active[state].flags.valid) {
+ if (state >= 0 && state < ACPI_THERMAL_MAX_ACTIVE)
+ result = sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(thermal->trips.active[state].temperature));
+ else
+ result = -EINVAL;
+ }
+ break;
+ default:
+ result = -EINVAL;
+ }
+
+ return result;
+}
+
+static ssize_t
+acpi_thermal_trip_point_store(struct acpi_thermal *thermal, int type,
+ int state, const char *buf, size_t count)
+{
+ char *end;
+ u32 val;
+ ssize_t result = -ENODEV;
+
+ val = simple_strtol(buf, &end, 0);
+ if (*end == '\0')
+ return -EINVAL;
+
+ switch(type) {
+ case ACPI_THERMAL_TRIP_POINT_CRITICAL:
+ if (thermal->trips.critical.flags.valid){
+ thermal->trips.critical.temperature = CELSIUS_TO_KELVIN(val);
+ result = count;
+ }
+ break;
+ case ACPI_THERMAL_TRIP_POINT_HOT:
+ if (thermal->trips.hot.flags.valid){
+ thermal->trips.hot.temperature = CELSIUS_TO_KELVIN(val);
+ result = count;
+ }
+ break;
+ case ACPI_THERMAL_TRIP_POINT_PASSIVE:
+ if (thermal->trips.passive.flags.valid){
+ thermal->trips.passive.temperature = CELSIUS_TO_KELVIN(val);
+ result = count;
+ }
+ break;
+ case ACPI_THERMAL_TRIP_POINT_ACTIVE:
+ if (thermal->trips.active[state].flags.valid){
+ if (state >= 0 && state < ACPI_THERMAL_MAX_ACTIVE) {
+ thermal->trips.active[state].temperature = CELSIUS_TO_KELVIN(val);
+ result = count;
+ }
+ else
+ result = -EINVAL;
+ }
+ break;
+ default:
+ result = -EINVAL;
+ }
+ return result;
+}
+
+static ssize_t _trip_point_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_thermal_trip_point_attr *thermal_attr = container_of(attr, struct acpi_thermal_trip_point_attr, attr);
+ struct acpi_device *acpi_dev = to_acpi_device(dev);
+ struct acpi_thermal *thermal = acpi_driver_data(acpi_dev);
+
+ if (!thermal_attr->store)
+ return -EINVAL;
+
+ return thermal_attr->show(thermal, thermal_attr->type, thermal_attr->state, buf);
+}
+static ssize_t _trip_point_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_thermal_trip_point_attr *thermal_attr = container_of(attr, struct acpi_thermal_trip_point_attr, attr);
+ struct acpi_device *acpi_dev = to_acpi_device(dev);
+ struct acpi_thermal *thermal = acpi_driver_data(acpi_dev);
+
+ if (!thermal_attr->store)
+ return -EINVAL;
+
+ return thermal_attr->store(thermal, thermal_attr->type, thermal_attr->state, buf, count);
+}
+
+#define ACPI_THERMAL_TRIP_POINT(_name, _type, _state) \
+struct acpi_thermal_trip_point_attr _name##_attr = \
+{ \
+ .attr = __ATTR(_name, 0644, _trip_point_show, _trip_point_store), \
+ .type = _type, \
+ .state = _state, \
+ .show = acpi_thermal_trip_point_show, \
+ .store = acpi_thermal_trip_point_store, \
+}
+
+
+static ACPI_THERMAL_TRIP_POINT(critical_temp, ACPI_THERMAL_TRIP_POINT_CRITICAL, 0);
+static ACPI_THERMAL_TRIP_POINT(hot_temp, ACPI_THERMAL_TRIP_POINT_HOT, 0);
+static ACPI_THERMAL_TRIP_POINT(passive_temp, ACPI_THERMAL_TRIP_POINT_PASSIVE, 0);
+static ACPI_THERMAL_TRIP_POINT(active0_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 0);
+static ACPI_THERMAL_TRIP_POINT(active1_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 1);
+static ACPI_THERMAL_TRIP_POINT(active2_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 2);
+static ACPI_THERMAL_TRIP_POINT(active3_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 3);
+static ACPI_THERMAL_TRIP_POINT(active4_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 4);
+static ACPI_THERMAL_TRIP_POINT(active5_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 5);
+static ACPI_THERMAL_TRIP_POINT(active6_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 6);
+static ACPI_THERMAL_TRIP_POINT(active7_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 7);
+static ACPI_THERMAL_TRIP_POINT(active8_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 8);
+static ACPI_THERMAL_TRIP_POINT(active9_temp, ACPI_THERMAL_TRIP_POINT_ACTIVE, 9);
+
+static struct device_attribute *thermal_default_attr[] =
+{
+ GET_DEV_ATTR(state),
+ GET_DEV_ATTR(temperature),
+ GET_DEV_ATTR(cooling_mode),
+ GET_DEV_ATTR(polling_freq),
+ GET_DEV_ATTR(critical_temp),
+ NULL,
+};
+
+static struct device_attribute *thermal_optional_attr[] =
+{
+ GET_DEV_ATTR(hot_temp),
+ GET_DEV_ATTR(passive_temp),
+ GET_DEV_ATTR(passive_tc1),
+ GET_DEV_ATTR(passive_tc2),
+ GET_DEV_ATTR(passive_tsp),
+ GET_DEV_ATTR(active0_temp),
+ GET_DEV_ATTR(active1_temp),
+ GET_DEV_ATTR(active2_temp),
+ GET_DEV_ATTR(active3_temp),
+ GET_DEV_ATTR(active4_temp),
+ GET_DEV_ATTR(active5_temp),
+ GET_DEV_ATTR(active6_temp),
+ GET_DEV_ATTR(active7_temp),
+ GET_DEV_ATTR(active8_temp),
+ GET_DEV_ATTR(active9_temp),
+};
+
+static int acpi_thermal_add_sysfs(struct acpi_device* device)
+{
+ int result = 0;
+
+ result = acpi_device_add_sysfs(device, thermal_default_attr);
+
+ /*
+ * optional trip point attributes (hot/passive/active)
+ * and syslinks to cooling devices both are dynamic
+ */
+
+ return result;
+}
+
+static void acpi_thermal_remove_sysfs(struct acpi_device* device)
+{
+ struct acpi_thermal *thermal = acpi_driver_data(device);
+ struct acpi_handle_list new_devices;
+ int i = 0;
+
+ acpi_device_remove_sysfs(device, thermal_default_attr);
+
+ /*
+ * remove syslinks to cooling devices
+ */
+ new_devices.count = 0;
+
+ if (thermal->trips.passive.flags.valid)
+ acpi_thermal_cooling_device_update(thermal, -1, &new_devices);
+
+
+ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
+ if (thermal->trips.active[i].flags.valid)
+ acpi_thermal_cooling_device_update(thermal, i, &new_devices);
+
+ /*
+ * remove optional trip point attributes
+ */
+ if (thermal->trips.hot.flags.valid )
+ device_remove_file(&device->dev, thermal_optional_attr[0]);
+
+ if (thermal->trips.passive.flags.valid)
+ for (i = 0; i < 4; i++)
+ device_remove_file(&device->dev, thermal_optional_attr[1+i]);
+
+
+ for(i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
+ if ((thermal->trips.active[i].flags.valid))
+ device_remove_file(&device->dev, thermal_optional_attr[5+i]);
+
+ return ;
+}
+
+static int acpi_thermal_cooling_device_update(struct acpi_thermal* thermal, int state,
+ struct acpi_handle_list *new_devices)
+{
+ struct acpi_device *device = thermal->device;
+ struct acpi_handle_list *old_devices;
+ struct acpi_device *cooling_device;
+ char buf[24];
+ int i = 0;
+ int result = 0;
+
+ if (!device || !new_devices)
+ return -EINVAL;
+
+ if (state == -1) {
+ sprintf(buf, "passive_cooling_device0");
+ old_devices = &thermal->trips.passive.devices;
+ }
+ else
+ if (state >= 0 && state < ACPI_THERMAL_MAX_ACTIVE) {
+ sprintf(buf, "active%d_cooling_device0", state);
+ old_devices = &thermal->trips.active[state].devices;
+ }
+ else
+ return -EINVAL;
+
+ for (i = 0; i < old_devices->count || i < new_devices->count; i++) {
+ if (i >= old_devices->count)
+ old_devices->handles[i] = NULL;
+ if (i >= new_devices->count)
+ new_devices->handles[i] = NULL;
+ if (new_devices->handles[i] != old_devices->handles[i]) {
+ buf[22] = '0'+i;
+
+ if (i < old_devices->count && old_devices->handles[i])
+ sysfs_remove_link(&device->dev.kobj, buf);
+
+ if (i < new_devices->count && new_devices->handles[i]) {
+ acpi_bus_get_device(new_devices->handles[i], &cooling_device);
+ result = sysfs_create_link(&device->dev.kobj, &cooling_device->dev.kobj, buf);
+ if (result)
+ return result;
+ }
+ old_devices->handles[i] = new_devices->handles[i];
+ }
+ }
+ old_devices->count = new_devices->count;
+
+ return result;
+}
+
+static int acpi_thermal_trip_point_update(struct device *dev, struct device_attribute *attr, int type)
+{
+ int result =0;
+
+ if (type)
+ result = device_create_file(dev, attr);
+ else
+ device_remove_file(dev, attr);
+
+ return result;
+}
+
+static int acpi_thermal_sysfs_update(struct acpi_thermal *thermal, struct acpi_thermal_state *old_state)
+{
+ struct acpi_device *device = thermal->device;
+ int result = 0;
+ int i = 0;
+
+ if (thermal->trips.hot.flags.valid != old_state->hot) {
+ result = acpi_thermal_trip_point_update(&device->dev, thermal_optional_attr[0],
+ thermal->trips.hot.flags.valid);
+ if (result)
+ goto done;
+ }
+
+ if (thermal->trips.passive.flags.valid != old_state->passive)
+ for (i = 0; i < 4; i++) {
+ result = acpi_thermal_trip_point_update(&device->dev, thermal_optional_attr[1+i],
+ thermal->trips.passive.flags.valid);
+ if (result)
+ goto done;
+ }
+
+ for(i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
+ {
+ if ((thermal->trips.active[i].flags.valid && i >= old_state->active_index) ||
+ (!thermal->trips.active[i].flags.valid && i < old_state->active_index)) {
+ result = acpi_thermal_trip_point_update(&device->dev, thermal_optional_attr[5+i],
+ thermal->trips.active[i].flags.valid);
+ if (result)
+ goto done;
+ }
+ }
+
+ done:
+ return result;
+}
+
+/* --------------------------------------------------------------------------
+ FS Interface (/proc)
+ -------------------------------------------------------------------------- */
+#ifdef CONFIG_ACPI_PROCFS
static struct proc_dir_entry *acpi_thermal_dir;
static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset)
@@ -838,6 +1303,7 @@ static int acpi_thermal_temp_open_fs(str
static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_thermal *tz = seq->private;
+ struct acpi_device *device;
int i = 0;
int j = 0;
@@ -860,9 +1326,8 @@ static int acpi_thermal_trip_seq_show(st
tz->trips.passive.tc1, tz->trips.passive.tc2,
tz->trips.passive.tsp);
for (j = 0; j < tz->trips.passive.devices.count; j++) {
-
- seq_printf(seq, "0x%p ",
- tz->trips.passive.devices.handles[j]);
+ acpi_bus_get_device(tz->trips.passive.devices.handles[j], &device);
+ seq_printf(seq, "%4.4s ", acpi_device_bid(device));
}
seq_puts(seq, "\n");
}
@@ -873,9 +1338,10 @@ static int acpi_thermal_trip_seq_show(st
seq_printf(seq, "active[%d]: %ld C: devices=",
i,
KELVIN_TO_CELSIUS(tz->trips.active[i].temperature));
- for (j = 0; j < tz->trips.active[i].devices.count; j++)
- seq_printf(seq, "0x%p ",
- tz->trips.active[i].devices.handles[j]);
+ for (j = 0; j < tz->trips.active[i].devices.count; j++) {
+ acpi_bus_get_device(tz->trips.active[i].devices.handles[j], &device);
+ seq_printf(seq, "%4.4s ", acpi_device_bid(device));
+ }
seq_puts(seq, "\n");
}
@@ -1067,7 +1533,45 @@ acpi_thermal_write_polling(struct file *
return count;
}
-static int acpi_thermal_add_fs(struct acpi_device *device)
+static const struct file_operations acpi_thermal_state_fops = {
+ .open = acpi_thermal_state_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations acpi_thermal_temp_fops = {
+ .open = acpi_thermal_temp_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations acpi_thermal_trip_fops = {
+ .open = acpi_thermal_trip_open_fs,
+ .read = seq_read,
+ .write = acpi_thermal_write_trip_points,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations acpi_thermal_cooling_fops = {
+ .open = acpi_thermal_cooling_open_fs,
+ .read = seq_read,
+ .write = acpi_thermal_write_cooling_mode,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations acpi_thermal_polling_fops = {
+ .open = acpi_thermal_polling_open_fs,
+ .read = seq_read,
+ .write = acpi_thermal_write_polling,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int acpi_thermal_add_procfs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
@@ -1141,7 +1645,7 @@ static int acpi_thermal_add_fs(struct ac
return 0;
}
-static int acpi_thermal_remove_fs(struct acpi_device *device)
+static int acpi_thermal_remove_procfs(struct acpi_device *device)
{
if (acpi_device_dir(device)) {
@@ -1162,6 +1666,26 @@ static int acpi_thermal_remove_fs(struct
return 0;
}
+static int acpi_thermal_procfs_init(void)
+{
+ acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
+ if (!acpi_thermal_dir)
+ return -ENODEV;
+ acpi_thermal_dir->owner = THIS_MODULE;
+
+ return 0;
+}
+
+static int acpi_thermal_procfs_exit(void)
+{
+ remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
+
+ return 0;
+}
+#else
+declare_acpi_device_procfs(thermal);
+#endif
+
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
@@ -1283,10 +1807,14 @@ static int acpi_thermal_add(struct acpi_
if (result)
goto end;
- result = acpi_thermal_add_fs(device);
+ result = acpi_thermal_add_sysfs(device);
if (result)
goto end;
+ result = acpi_thermal_add_procfs(device);
+ if (result)
+ goto procfs_error;
+
init_timer(&tz->timer);
acpi_thermal_check(tz);
@@ -1296,19 +1824,22 @@ static int acpi_thermal_add(struct acpi_
acpi_thermal_notify, tz);
if (ACPI_FAILURE(status)) {
result = -ENODEV;
- goto end;
+ goto notify_error;
}
printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n",
acpi_device_name(device), acpi_device_bid(device),
KELVIN_TO_CELSIUS(tz->temperature));
- end:
- if (result) {
- acpi_thermal_remove_fs(device);
- kfree(tz);
- }
+ goto end;
+ notify_error:
+ acpi_thermal_remove_procfs(device);
+ procfs_error:
+ acpi_thermal_remove_sysfs(device);
+ end:
+ if (result)
+ kfree(tz);
return result;
}
@@ -1347,7 +1878,9 @@ static int acpi_thermal_remove(struct ac
acpi_thermal_active(tz);
}
- acpi_thermal_remove_fs(device);
+ acpi_thermal_remove_procfs(device);
+
+ acpi_thermal_remove_sysfs(device);
kfree(tz);
return 0;
@@ -1390,15 +1923,14 @@ static int __init acpi_thermal_init(void
{
int result = 0;
+ result = acpi_thermal_procfs_init();
+ if (result)
+ return result;
- acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
- if (!acpi_thermal_dir)
- return -ENODEV;
- acpi_thermal_dir->owner = THIS_MODULE;
-
+ acpi_thermal_driver.owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_thermal_driver);
if (result < 0) {
- remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
+ acpi_thermal_procfs_exit();
return -ENODEV;
}
@@ -1407,10 +1939,9 @@ static int __init acpi_thermal_init(void
static void __exit acpi_thermal_exit(void)
{
-
acpi_bus_unregister_driver(&acpi_thermal_driver);
- remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
+ acpi_thermal_procfs_exit();
return;
}
-
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