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path: root/drivers/macintosh/therm_pm72.c
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Diffstat (limited to 'drivers/macintosh/therm_pm72.c')
-rw-r--r--drivers/macintosh/therm_pm72.c295
1 files changed, 148 insertions, 147 deletions
diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index 1e0a69a5e81..97cfc5ac9fd 100644
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -44,11 +44,11 @@
* TODO: - Check MPU structure version/signature
* - Add things like /sbin/overtemp for non-critical
* overtemp conditions so userland can take some policy
- * decisions, like slewing down CPUs
+ * decisions, like slowing down CPUs
* - Deal with fan and i2c failures in a better way
* - Maybe do a generic PID based on params used for
* U3 and Drives ? Definitely need to factor code a bit
- * bettter... also make sensor detection more robust using
+ * better... also make sensor detection more robust using
* the device-tree to probe for them
* - Figure out how to get the slots consumption and set the
* slots fan accordingly
@@ -91,7 +91,7 @@
*
* Mar. 10, 2005 : 1.2
* - Add basic support for Xserve G5
- * - Retreive pumps min/max from EEPROM image in device-tree (broken)
+ * - Retrieve pumps min/max from EEPROM image in device-tree (broken)
* - Use min/max macros here or there
* - Latest darwin updated U3H min fan speed to 20% PWM
*
@@ -114,7 +114,6 @@
#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>
@@ -122,14 +121,14 @@
#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"
@@ -148,12 +147,12 @@
* Driver statics
*/
-static struct of_device * of_dev;
+static struct platform_device * of_dev;
static struct i2c_adapter * u3_0;
static struct i2c_adapter * u3_1;
static struct i2c_adapter * k2;
static struct i2c_client * fcu;
-static struct cpu_pid_state cpu_state[2];
+static struct cpu_pid_state processor_state[2];
static struct basckside_pid_params backside_params;
static struct backside_pid_state backside_state;
static struct drives_pid_state drives_state;
@@ -169,7 +168,7 @@ static int rackmac;
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
@@ -285,21 +284,7 @@ struct fcu_fan_table fcu_fans[] = {
},
};
-/*
- * 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
@@ -309,6 +294,7 @@ static struct i2c_client *attach_i2c_chip(int id, const char *name)
{
struct i2c_client *clt;
struct i2c_adapter *adap;
+ struct i2c_board_info info;
if (id & 0x200)
adap = k2;
@@ -319,31 +305,21 @@ static struct i2c_client *attach_i2c_chip(int id, const char *name)
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;
}
/*
@@ -398,7 +374,7 @@ static int read_smon_adc(struct cpu_pid_state *state, int chan)
rc = i2c_master_send(state->monitor, buf, 2);
if (rc <= 0)
goto error;
- /* Wait for convertion */
+ /* Wait for conversion */
msleep(1);
/* Switch to data register */
buf[0] = 4;
@@ -466,7 +442,7 @@ static int fan_read_reg(int reg, unsigned char *buf, int nb)
tries = 0;
for (;;) {
nr = i2c_master_recv(fcu, buf, nb);
- if (nr > 0 || (nr < 0 && nr != ENODEV) || tries >= 100)
+ if (nr > 0 || (nr < 0 && nr != -ENODEV) || tries >= 100)
break;
msleep(10);
++tries;
@@ -487,7 +463,7 @@ static int fan_write_reg(int reg, const unsigned char *ptr, int nb)
tries = 0;
for (;;) {
nw = i2c_master_send(fcu, buf, nb);
- if (nw > 0 || (nw < 0 && nw != EIO) || tries >= 100)
+ if (nw > 0 || (nw < 0 && nw != -EIO) || tries >= 100)
break;
msleep(10);
++tries;
@@ -687,8 +663,8 @@ static int read_eeprom(int cpu, struct mpu_data *out)
static void fetch_cpu_pumps_minmax(void)
{
- struct cpu_pid_state *state0 = &cpu_state[0];
- struct cpu_pid_state *state1 = &cpu_state[1];
+ struct cpu_pid_state *state0 = &processor_state[0];
+ struct cpu_pid_state *state1 = &processor_state[1];
u16 pump_min = 0, pump_max = 0xffff;
u16 tmp[4];
@@ -729,9 +705,9 @@ static void fetch_cpu_pumps_minmax(void)
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) \
@@ -740,17 +716,17 @@ static ssize_t show_##name(struct device *dev, struct device_attribute *attr, ch
return sprintf(buf, "%d", data); \
}
-BUILD_SHOW_FUNC_FIX(cpu0_temperature, cpu_state[0].last_temp)
-BUILD_SHOW_FUNC_FIX(cpu0_voltage, cpu_state[0].voltage)
-BUILD_SHOW_FUNC_FIX(cpu0_current, cpu_state[0].current_a)
-BUILD_SHOW_FUNC_INT(cpu0_exhaust_fan_rpm, cpu_state[0].rpm)
-BUILD_SHOW_FUNC_INT(cpu0_intake_fan_rpm, cpu_state[0].intake_rpm)
+BUILD_SHOW_FUNC_FIX(cpu0_temperature, processor_state[0].last_temp)
+BUILD_SHOW_FUNC_FIX(cpu0_voltage, processor_state[0].voltage)
+BUILD_SHOW_FUNC_FIX(cpu0_current, processor_state[0].current_a)
+BUILD_SHOW_FUNC_INT(cpu0_exhaust_fan_rpm, processor_state[0].rpm)
+BUILD_SHOW_FUNC_INT(cpu0_intake_fan_rpm, processor_state[0].intake_rpm)
-BUILD_SHOW_FUNC_FIX(cpu1_temperature, cpu_state[1].last_temp)
-BUILD_SHOW_FUNC_FIX(cpu1_voltage, cpu_state[1].voltage)
-BUILD_SHOW_FUNC_FIX(cpu1_current, cpu_state[1].current_a)
-BUILD_SHOW_FUNC_INT(cpu1_exhaust_fan_rpm, cpu_state[1].rpm)
-BUILD_SHOW_FUNC_INT(cpu1_intake_fan_rpm, cpu_state[1].intake_rpm)
+BUILD_SHOW_FUNC_FIX(cpu1_temperature, processor_state[1].last_temp)
+BUILD_SHOW_FUNC_FIX(cpu1_voltage, processor_state[1].voltage)
+BUILD_SHOW_FUNC_FIX(cpu1_current, processor_state[1].current_a)
+BUILD_SHOW_FUNC_INT(cpu1_exhaust_fan_rpm, processor_state[1].rpm)
+BUILD_SHOW_FUNC_INT(cpu1_intake_fan_rpm, processor_state[1].intake_rpm)
BUILD_SHOW_FUNC_FIX(backside_temperature, backside_state.last_temp)
BUILD_SHOW_FUNC_INT(backside_fan_pwm, backside_state.pwm)
@@ -942,8 +918,8 @@ static void do_cpu_pid(struct cpu_pid_state *state, s32 temp, s32 power)
static void do_monitor_cpu_combined(void)
{
- struct cpu_pid_state *state0 = &cpu_state[0];
- struct cpu_pid_state *state1 = &cpu_state[1];
+ struct cpu_pid_state *state0 = &processor_state[0];
+ struct cpu_pid_state *state1 = &processor_state[1];
s32 temp0, power0, temp1, power1;
s32 temp_combi, power_combi;
int rc, intake, pump;
@@ -970,10 +946,16 @@ static void do_monitor_cpu_combined(void)
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) {
@@ -1045,10 +1027,16 @@ static void do_monitor_cpu_split(struct cpu_pid_state *state)
" (%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) {
@@ -1107,10 +1095,16 @@ static void do_monitor_cpu_rack(struct cpu_pid_state *state)
" (%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) {
@@ -1155,7 +1149,7 @@ static void do_monitor_cpu_rack(struct cpu_pid_state *state)
/*
* Initialize the state structure for one CPU control loop
*/
-static int init_cpu_state(struct cpu_pid_state *state, int index)
+static int init_processor_state(struct cpu_pid_state *state, int index)
{
int err;
@@ -1197,13 +1191,11 @@ static int init_cpu_state(struct cpu_pid_state *state, int index)
err |= device_create_file(&of_dev->dev, &dev_attr_cpu1_intake_fan_rpm);
}
if (err)
- printk(KERN_WARNING "Failed to create some of the atribute"
+ printk(KERN_WARNING "Failed to create some of the attribute"
"files for CPU %d\n", index);
return 0;
fail:
- if (state->monitor)
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
return -ENODEV;
@@ -1212,7 +1204,7 @@ static int init_cpu_state(struct cpu_pid_state *state, int index)
/*
* Dispose of the state data for one CPU control loop
*/
-static void dispose_cpu_state(struct cpu_pid_state *state)
+static void dispose_processor_state(struct cpu_pid_state *state)
{
if (state->monitor == NULL)
return;
@@ -1231,7 +1223,6 @@ static void dispose_cpu_state(struct cpu_pid_state *state)
device_remove_file(&of_dev->dev, &dev_attr_cpu1_intake_fan_rpm);
}
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
@@ -1406,7 +1397,6 @@ static void dispose_backside_state(struct backside_pid_state *state)
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;
}
@@ -1531,7 +1521,6 @@ static void dispose_drives_state(struct drives_pid_state *state)
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;
}
@@ -1653,7 +1642,6 @@ static void dispose_dimms_state(struct dimm_pid_state *state)
device_remove_file(&of_dev->dev, &dev_attr_dimms_temperature);
- detach_i2c_chip(state->monitor);
state->monitor = NULL;
}
@@ -1778,7 +1766,6 @@ static void dispose_slots_state(struct slots_pid_state *state)
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;
}
@@ -1803,11 +1790,11 @@ static int main_control_loop(void *x)
{
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;
}
@@ -1816,20 +1803,20 @@ static int main_control_loop(void *x)
set_pwm_fan(SLOTS_FAN_PWM_INDEX, SLOTS_FAN_DEFAULT_PWM);
/* Initialize ADCs */
- initialize_adc(&cpu_state[0]);
- if (cpu_state[1].monitor != NULL)
- initialize_adc(&cpu_state[1]);
+ initialize_adc(&processor_state[0]);
+ if (processor_state[1].monitor != NULL)
+ initialize_adc(&processor_state[1]);
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) {
@@ -1845,14 +1832,14 @@ static int main_control_loop(void *x)
if (cpu_pid_type == CPU_PID_TYPE_COMBINED)
do_monitor_cpu_combined();
else if (cpu_pid_type == CPU_PID_TYPE_RACKMAC) {
- do_monitor_cpu_rack(&cpu_state[0]);
- if (cpu_state[1].monitor != NULL)
- do_monitor_cpu_rack(&cpu_state[1]);
+ do_monitor_cpu_rack(&processor_state[0]);
+ if (processor_state[1].monitor != NULL)
+ do_monitor_cpu_rack(&processor_state[1]);
// better deal with UP
} else {
- do_monitor_cpu_split(&cpu_state[0]);
- if (cpu_state[1].monitor != NULL)
- do_monitor_cpu_split(&cpu_state[1]);
+ do_monitor_cpu_split(&processor_state[0]);
+ if (processor_state[1].monitor != NULL)
+ do_monitor_cpu_split(&processor_state[1]);
// better deal with UP
}
/* Then, the rest */
@@ -1861,7 +1848,7 @@ static int main_control_loop(void *x)
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");
@@ -1897,8 +1884,8 @@ static int main_control_loop(void *x)
*/
static void dispose_control_loops(void)
{
- dispose_cpu_state(&cpu_state[0]);
- dispose_cpu_state(&cpu_state[1]);
+ dispose_processor_state(&processor_state[0]);
+ dispose_processor_state(&processor_state[1]);
dispose_backside_state(&backside_state);
dispose_drives_state(&drives_state);
dispose_slots_state(&slots_state);
@@ -1928,7 +1915,7 @@ static int create_control_loops(void)
*/
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) {
@@ -1940,12 +1927,12 @@ static int create_control_loops(void)
/* Create control loops for everything. If any fail, everything
* fails
*/
- if (init_cpu_state(&cpu_state[0], 0))
+ if (init_processor_state(&processor_state[0], 0))
goto fail;
if (cpu_pid_type == CPU_PID_TYPE_COMBINED)
fetch_cpu_pumps_minmax();
- if (cpu_count > 1 && init_cpu_state(&cpu_state[1], 1))
+ if (cpu_count > 1 && init_processor_state(&processor_state[1], 1))
goto fail;
if (init_backside_state(&backside_state))
goto fail;
@@ -2007,8 +1994,6 @@ static int attach_fcu(void)
*/
static void detach_fcu(void)
{
- if (fcu)
- detach_i2c_chip(fcu);
fcu = NULL;
}
@@ -2019,13 +2004,13 @@ static void detach_fcu(void)
*/
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;
}
@@ -2054,27 +2039,36 @@ static int therm_pm72_attach(struct i2c_adapter *adapter)
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");
@@ -2090,11 +2084,35 @@ static int therm_pm72_detach(struct i2c_adapter *adapter)
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];
@@ -2191,36 +2209,43 @@ static void fcu_lookup_fans(struct device_node *fcu_node)
}
}
-static int fcu_of_probe(struct of_device* dev, const struct of_device_id *match)
+static int fcu_of_probe(struct platform_device* dev)
{
state = state_detached;
+ of_dev = dev;
+
+ dev_info(&dev->dev, "PowerMac G5 Thermal control driver %s\n", VERSION);
/* Lookup the fans in the device tree */
- fcu_lookup_fans(dev->node);
+ fcu_lookup_fans(dev->dev.of_node);
/* Add the driver */
return i2c_add_driver(&therm_pm72_driver);
}
-static int fcu_of_remove(struct of_device* dev)
+static int fcu_of_remove(struct platform_device* dev)
{
i2c_del_driver(&therm_pm72_driver);
return 0;
}
-static struct of_device_id fcu_match[] =
+static const struct of_device_id fcu_match[] =
{
{
.type = "fcu",
},
{},
};
+MODULE_DEVICE_TABLE(of, fcu_match);
-static struct of_platform_driver fcu_of_platform_driver =
+static struct platform_driver fcu_of_platform_driver =
{
- .name = "temperature",
- .match_table = fcu_match,
+ .driver = {
+ .name = "temperature",
+ .owner = THIS_MODULE,
+ .of_match_table = fcu_match,
+ },
.probe = fcu_of_probe,
.remove = fcu_of_remove
};
@@ -2230,43 +2255,19 @@ static struct of_platform_driver fcu_of_platform_driver =
*/
static int __init therm_pm72_init(void)
{
- 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;
- printk(KERN_INFO "PowerMac G5 Thermal control driver %s\n", VERSION);
-
- np = of_find_node_by_type(NULL, "fcu");
- if (np == NULL) {
- /* Some machines have strangely broken device-tree */
- np = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/fan@15e");
- if (np == NULL) {
- printk(KERN_ERR "Can't find FCU in device-tree !\n");
- return -ENODEV;
- }
- }
- of_dev = of_platform_device_create(np, "temperature", NULL);
- if (of_dev == NULL) {
- printk(KERN_ERR "Can't register FCU platform device !\n");
- return -ENODEV;
- }
-
- of_register_platform_driver(&fcu_of_platform_driver);
-
- return 0;
+ return platform_driver_register(&fcu_of_platform_driver);
}
static void __exit therm_pm72_exit(void)
{
- of_unregister_platform_driver(&fcu_of_platform_driver);
-
- if (of_dev)
- of_device_unregister(of_dev);
+ platform_driver_unregister(&fcu_of_platform_driver);
}
module_init(therm_pm72_init);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 13:34:59 +0000