#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/sched.h>
-#include <linux/slab.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/kmod.h>
#include <linux/i2c.h>
#include <linux/kthread.h>
+#include <linux/mutex.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/sections.h>
-#include <asm/of_device.h>
#include <asm/macio.h>
-#include <asm/of_platform.h>
#include "therm_pm72.h"
static s32 dimm_output_clamp;
static int fcu_rpm_shift;
static int fcu_tickle_ticks;
-static DECLARE_MUTEX(driver_lock);
+static DEFINE_MUTEX(driver_lock);
/*
* We have 3 types of CPU PID control. One is "split" old style control
},
};
-/*
- * i2c_driver structure to attach to the host i2c controller
- */
-
-static int therm_pm72_attach(struct i2c_adapter *adapter);
-static int therm_pm72_detach(struct i2c_adapter *adapter);
-
-static struct i2c_driver therm_pm72_driver =
-{
- .driver = {
- .name = "therm_pm72",
- },
- .attach_adapter = therm_pm72_attach,
- .detach_adapter = therm_pm72_detach,
-};
+static struct i2c_driver therm_pm72_driver;
/*
* Utility function to create an i2c_client structure and
{
struct i2c_client *clt;
struct i2c_adapter *adap;
+ struct i2c_board_info info;
if (id & 0x200)
adap = k2;
if (adap == NULL)
return NULL;
- clt = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (clt == NULL)
- return NULL;
-
- clt->addr = (id >> 1) & 0x7f;
- clt->adapter = adap;
- clt->driver = &therm_pm72_driver;
- strncpy(clt->name, name, I2C_NAME_SIZE-1);
-
- if (i2c_attach_client(clt)) {
+ memset(&info, 0, sizeof(struct i2c_board_info));
+ info.addr = (id >> 1) & 0x7f;
+ strlcpy(info.type, "therm_pm72", I2C_NAME_SIZE);
+ clt = i2c_new_device(adap, &info);
+ if (!clt) {
printk(KERN_ERR "therm_pm72: Failed to attach to i2c ID 0x%x\n", id);
- kfree(clt);
return NULL;
}
- return clt;
-}
-/*
- * Utility function to get rid of the i2c_client structure
- * (will also detach from the adapter hopepfully)
- */
-static void detach_i2c_chip(struct i2c_client *clt)
-{
- i2c_detach_client(clt);
- kfree(clt);
+ /*
+ * Let i2c-core delete that device on driver removal.
+ * This is safe because i2c-core holds the core_lock mutex for us.
+ */
+ list_add_tail(&clt->detected, &therm_pm72_driver.clients);
+ return clt;
}
/*
static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
ssize_t r; \
- down(&driver_lock); \
+ mutex_lock(&driver_lock); \
r = sprintf(buf, "%d.%03d", FIX32TOPRINT(data)); \
- up(&driver_lock); \
+ mutex_unlock(&driver_lock); \
return r; \
}
#define BUILD_SHOW_FUNC_INT(name, data) \
printk(KERN_WARNING "Warning ! Temperature way above maximum (%d) !\n",
temp_combi >> 16);
state0->overtemp += CPU_MAX_OVERTEMP / 4;
- } else if (temp_combi > (state0->mpu.tmax << 16))
+ } else if (temp_combi > (state0->mpu.tmax << 16)) {
state0->overtemp++;
- else
+ printk(KERN_WARNING "Temperature %d above max %d. overtemp %d\n",
+ temp_combi >> 16, state0->mpu.tmax, state0->overtemp);
+ } else {
+ if (state0->overtemp)
+ printk(KERN_WARNING "Temperature back down to %d\n",
+ temp_combi >> 16);
state0->overtemp = 0;
+ }
if (state0->overtemp >= CPU_MAX_OVERTEMP)
critical_state = 1;
if (state0->overtemp > 0) {
" (%d) !\n",
state->index, temp >> 16);
state->overtemp += CPU_MAX_OVERTEMP / 4;
- } else if (temp > (state->mpu.tmax << 16))
+ } else if (temp > (state->mpu.tmax << 16)) {
state->overtemp++;
- else
+ printk(KERN_WARNING "CPU %d temperature %d above max %d. overtemp %d\n",
+ state->index, temp >> 16, state->mpu.tmax, state->overtemp);
+ } else {
+ if (state->overtemp)
+ printk(KERN_WARNING "CPU %d temperature back down to %d\n",
+ state->index, temp >> 16);
state->overtemp = 0;
+ }
if (state->overtemp >= CPU_MAX_OVERTEMP)
critical_state = 1;
if (state->overtemp > 0) {
" (%d) !\n",
state->index, temp >> 16);
state->overtemp = CPU_MAX_OVERTEMP / 4;
- } else if (temp > (state->mpu.tmax << 16))
+ } else if (temp > (state->mpu.tmax << 16)) {
state->overtemp++;
- else
+ printk(KERN_WARNING "CPU %d temperature %d above max %d. overtemp %d\n",
+ state->index, temp >> 16, state->mpu.tmax, state->overtemp);
+ } else {
+ if (state->overtemp)
+ printk(KERN_WARNING "CPU %d temperature back down to %d\n",
+ state->index, temp >> 16);
state->overtemp = 0;
+ }
if (state->overtemp >= CPU_MAX_OVERTEMP)
critical_state = 1;
if (state->overtemp > 0) {
return 0;
fail:
- if (state->monitor)
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
return -ENODEV;
device_remove_file(&of_dev->dev, &dev_attr_cpu1_intake_fan_rpm);
}
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
device_remove_file(&of_dev->dev, &dev_attr_backside_temperature);
device_remove_file(&of_dev->dev, &dev_attr_backside_fan_pwm);
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
device_remove_file(&of_dev->dev, &dev_attr_drives_temperature);
device_remove_file(&of_dev->dev, &dev_attr_drives_fan_rpm);
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
device_remove_file(&of_dev->dev, &dev_attr_dimms_temperature);
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
device_remove_file(&of_dev->dev, &dev_attr_slots_temperature);
device_remove_file(&of_dev->dev, &dev_attr_slots_fan_pwm);
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
{
DBG("main_control_loop started\n");
- down(&driver_lock);
+ mutex_lock(&driver_lock);
if (start_fcu() < 0) {
printk(KERN_ERR "kfand: failed to start FCU\n");
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
goto out;
}
fcu_tickle_ticks = FCU_TICKLE_TICKS;
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
while (state == state_attached) {
unsigned long elapsed, start;
start = jiffies;
- down(&driver_lock);
+ mutex_lock(&driver_lock);
/* Tickle the FCU just in case */
if (--fcu_tickle_ticks < 0) {
do_monitor_slots(&slots_state);
else
do_monitor_drives(&drives_state);
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
if (critical_state == 1) {
printk(KERN_WARNING "Temperature control detected a critical condition\n");
*/
if (rackmac)
cpu_pid_type = CPU_PID_TYPE_RACKMAC;
- else if (machine_is_compatible("PowerMac7,3")
+ else if (of_machine_is_compatible("PowerMac7,3")
&& (cpu_count > 1)
&& fcu_fans[CPUA_PUMP_RPM_INDEX].id != FCU_FAN_ABSENT_ID
&& fcu_fans[CPUB_PUMP_RPM_INDEX].id != FCU_FAN_ABSENT_ID) {
*/
static void detach_fcu(void)
{
- if (fcu)
- detach_i2c_chip(fcu);
fcu = NULL;
}
*/
static int therm_pm72_attach(struct i2c_adapter *adapter)
{
- down(&driver_lock);
+ mutex_lock(&driver_lock);
/* Check state */
if (state == state_detached)
state = state_attaching;
if (state != state_attaching) {
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
return 0;
}
state = state_attached;
start_control_loops();
}
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
return 0;
}
+static int therm_pm72_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ /* Always succeed, the real work was done in therm_pm72_attach() */
+ return 0;
+}
+
/*
- * Called on every adapter when the driver or the i2c controller
+ * Called when any of the devices which participates into thermal management
* is going away.
*/
-static int therm_pm72_detach(struct i2c_adapter *adapter)
+static int therm_pm72_remove(struct i2c_client *client)
{
- down(&driver_lock);
+ struct i2c_adapter *adapter = client->adapter;
+
+ mutex_lock(&driver_lock);
if (state != state_detached)
state = state_detaching;
/* Stop control loops if any */
DBG("stopping control loops\n");
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
stop_control_loops();
- down(&driver_lock);
+ mutex_lock(&driver_lock);
if (u3_0 != NULL && !strcmp(adapter->name, "u3 0")) {
DBG("lost U3-0, disposing control loops\n");
if (u3_0 == NULL && u3_1 == NULL)
state = state_detached;
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
return 0;
}
+/*
+ * i2c_driver structure to attach to the host i2c controller
+ */
+
+static const struct i2c_device_id therm_pm72_id[] = {
+ /*
+ * Fake device name, thermal management is done by several
+ * chips but we don't need to differentiate between them at
+ * this point.
+ */
+ { "therm_pm72", 0 },
+ { }
+};
+
+static struct i2c_driver therm_pm72_driver = {
+ .driver = {
+ .name = "therm_pm72",
+ },
+ .attach_adapter = therm_pm72_attach,
+ .probe = therm_pm72_probe,
+ .remove = therm_pm72_remove,
+ .id_table = therm_pm72_id,
+};
+
static int fan_check_loc_match(const char *loc, int fan)
{
char tmp[64];
return 0;
}
-static struct of_device_id fcu_match[] =
+static const struct of_device_id fcu_match[] =
{
{
.type = "fcu",
{
struct device_node *np;
- rackmac = machine_is_compatible("RackMac3,1");
+ rackmac = of_machine_is_compatible("RackMac3,1");
- if (!machine_is_compatible("PowerMac7,2") &&
- !machine_is_compatible("PowerMac7,3") &&
+ if (!of_machine_is_compatible("PowerMac7,2") &&
+ !of_machine_is_compatible("PowerMac7,3") &&
!rackmac)
return -ENODEV;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff