summaryrefslogtreecommitdiffstats
path: root/drivers/macintosh/therm_adt746x.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/macintosh/therm_adt746x.c')
-rw-r--r--drivers/macintosh/therm_adt746x.c480
1 files changed, 204 insertions, 276 deletions
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
index fc71723cbc48..f433521a6f9d 100644
--- a/drivers/macintosh/therm_adt746x.c
+++ b/drivers/macintosh/therm_adt746x.c
@@ -47,7 +47,7 @@ static u8 FAN_SPD_SET[2] = {0x30, 0x31};
static u8 default_limits_local[3] = {70, 50, 70}; /* local, sensor1, sensor2 */
static u8 default_limits_chip[3] = {80, 65, 80}; /* local, sensor1, sensor2 */
-static const char *sensor_location[3];
+static const char *sensor_location[3] = { "?", "?", "?" };
static int limit_adjust;
static int fan_speed = -1;
@@ -79,18 +79,16 @@ struct thermostat {
int last_speed[2];
int last_var[2];
int pwm_inv[2];
+ struct task_struct *thread;
+ struct platform_device *pdev;
+ enum {
+ ADT7460,
+ ADT7467
+ } type;
};
-static enum {ADT7460, ADT7467} therm_type;
-static int therm_bus, therm_address;
-static struct platform_device * of_dev;
-static struct thermostat* thermostat;
-static struct task_struct *thread_therm = NULL;
-
static void write_both_fan_speed(struct thermostat *th, int speed);
static void write_fan_speed(struct thermostat *th, int speed, int fan);
-static void thermostat_create_files(void);
-static void thermostat_remove_files(void);
static int
write_reg(struct thermostat* th, int reg, u8 data)
@@ -126,66 +124,6 @@ read_reg(struct thermostat* th, int reg)
return data;
}
-static struct i2c_driver thermostat_driver;
-
-static int
-attach_thermostat(struct i2c_adapter *adapter)
-{
- unsigned long bus_no;
- struct i2c_board_info info;
- struct i2c_client *client;
-
- if (strncmp(adapter->name, "uni-n", 5))
- return -ENODEV;
- bus_no = simple_strtoul(adapter->name + 6, NULL, 10);
- if (bus_no != therm_bus)
- return -ENODEV;
-
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "therm_adt746x", I2C_NAME_SIZE);
- info.addr = therm_address;
- client = i2c_new_device(adapter, &info);
- if (!client)
- return -ENODEV;
-
- /*
- * 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(&client->detected, &thermostat_driver.clients);
- return 0;
-}
-
-static int
-remove_thermostat(struct i2c_client *client)
-{
- struct thermostat *th = i2c_get_clientdata(client);
- int i;
-
- thermostat_remove_files();
-
- if (thread_therm != NULL) {
- kthread_stop(thread_therm);
- }
-
- printk(KERN_INFO "adt746x: Putting max temperatures back from "
- "%d, %d, %d to %d, %d, %d\n",
- th->limits[0], th->limits[1], th->limits[2],
- th->initial_limits[0], th->initial_limits[1],
- th->initial_limits[2]);
-
- for (i = 0; i < 3; i++)
- write_reg(th, LIMIT_REG[i], th->initial_limits[i]);
-
- write_both_fan_speed(th, -1);
-
- thermostat = NULL;
-
- kfree(th);
-
- return 0;
-}
-
static int read_fan_speed(struct thermostat *th, u8 addr)
{
u8 tmp[2];
@@ -203,7 +141,7 @@ static int read_fan_speed(struct thermostat *th, u8 addr)
static void write_both_fan_speed(struct thermostat *th, int speed)
{
write_fan_speed(th, speed, 0);
- if (therm_type == ADT7460)
+ if (th->type == ADT7460)
write_fan_speed(th, speed, 1);
}
@@ -216,7 +154,7 @@ static void write_fan_speed(struct thermostat *th, int speed, int fan)
else if (speed < -1)
speed = 0;
- if (therm_type == ADT7467 && fan == 1)
+ if (th->type == ADT7467 && fan == 1)
return;
if (th->last_speed[fan] != speed) {
@@ -239,7 +177,7 @@ static void write_fan_speed(struct thermostat *th, int speed, int fan)
write_reg(th, FAN_SPD_SET[fan], speed);
} else {
/* back to automatic */
- if(therm_type == ADT7460) {
+ if(th->type == ADT7460) {
manual = read_reg(th,
MANUAL_MODE[fan]) & (~MANUAL_MASK);
manual &= ~INVERT_MASK;
@@ -293,7 +231,7 @@ static void update_fans_speed (struct thermostat *th)
/* we don't care about local sensor, so we start at sensor 1 */
for (i = 1; i < 3; i++) {
int started = 0;
- int fan_number = (therm_type == ADT7460 && i == 2);
+ int fan_number = (th->type == ADT7460 && i == 2);
int var = th->temps[i] - th->limits[i];
if (var > -1) {
@@ -370,116 +308,22 @@ static int monitor_task(void *arg)
static void set_limit(struct thermostat *th, int i)
{
- /* Set sensor1 limit higher to avoid powerdowns */
- th->limits[i] = default_limits_chip[i] + limit_adjust;
- write_reg(th, LIMIT_REG[i], th->limits[i]);
+ /* Set sensor1 limit higher to avoid powerdowns */
+ th->limits[i] = default_limits_chip[i] + limit_adjust;
+ write_reg(th, LIMIT_REG[i], th->limits[i]);
- /* set our limits to normal */
- th->limits[i] = default_limits_local[i] + limit_adjust;
+ /* set our limits to normal */
+ th->limits[i] = default_limits_local[i] + limit_adjust;
}
-static int probe_thermostat(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct thermostat* th;
- int rc;
- int i;
-
- if (thermostat)
- return 0;
-
- th = kzalloc(sizeof(struct thermostat), GFP_KERNEL);
- if (!th)
- return -ENOMEM;
-
- i2c_set_clientdata(client, th);
- th->clt = client;
-
- rc = read_reg(th, CONFIG_REG);
- if (rc < 0) {
- dev_err(&client->dev, "Thermostat failed to read config!\n");
- kfree(th);
- return -ENODEV;
- }
-
- /* force manual control to start the fan quieter */
- if (fan_speed == -1)
- fan_speed = 64;
-
- if(therm_type == ADT7460) {
- printk(KERN_INFO "adt746x: ADT7460 initializing\n");
- /* The 7460 needs to be started explicitly */
- write_reg(th, CONFIG_REG, 1);
- } else
- printk(KERN_INFO "adt746x: ADT7467 initializing\n");
-
- for (i = 0; i < 3; i++) {
- th->initial_limits[i] = read_reg(th, LIMIT_REG[i]);
- set_limit(th, i);
- }
-
- printk(KERN_INFO "adt746x: Lowering max temperatures from %d, %d, %d"
- " to %d, %d, %d\n",
- th->initial_limits[0], th->initial_limits[1],
- th->initial_limits[2], th->limits[0], th->limits[1],
- th->limits[2]);
-
- thermostat = th;
-
- /* record invert bit status because fw can corrupt it after suspend */
- th->pwm_inv[0] = read_reg(th, MANUAL_MODE[0]) & INVERT_MASK;
- th->pwm_inv[1] = read_reg(th, MANUAL_MODE[1]) & INVERT_MASK;
-
- /* be sure to really write fan speed the first time */
- th->last_speed[0] = -2;
- th->last_speed[1] = -2;
- th->last_var[0] = -80;
- th->last_var[1] = -80;
-
- if (fan_speed != -1) {
- /* manual mode, stop fans */
- write_both_fan_speed(th, 0);
- } else {
- /* automatic mode */
- write_both_fan_speed(th, -1);
- }
-
- thread_therm = kthread_run(monitor_task, th, "kfand");
-
- if (thread_therm == ERR_PTR(-ENOMEM)) {
- printk(KERN_INFO "adt746x: Kthread creation failed\n");
- thread_therm = NULL;
- return -ENOMEM;
- }
-
- thermostat_create_files();
-
- return 0;
+#define BUILD_SHOW_FUNC_INT(name, data) \
+static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ struct thermostat *th = dev_get_drvdata(dev); \
+ return sprintf(buf, "%d\n", data); \
}
-static const struct i2c_device_id therm_adt746x_id[] = {
- { "therm_adt746x", 0 },
- { }
-};
-
-static struct i2c_driver thermostat_driver = {
- .driver = {
- .name = "therm_adt746x",
- },
- .attach_adapter = attach_thermostat,
- .probe = probe_thermostat,
- .remove = remove_thermostat,
- .id_table = therm_adt746x_id,
-};
-
-/*
- * Now, unfortunately, sysfs doesn't give us a nice void * we could
- * pass around to the attribute functions, so we don't really have
- * choice but implement a bunch of them...
- *
- * FIXME, it does now...
- */
-#define BUILD_SHOW_FUNC_INT(name, data) \
+#define BUILD_SHOW_FUNC_INT_LITE(name, data) \
static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return sprintf(buf, "%d\n", data); \
@@ -494,22 +338,24 @@ static ssize_t show_##name(struct device *dev, struct device_attribute *attr, ch
#define BUILD_SHOW_FUNC_FAN(name, data) \
static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
+ struct thermostat *th = dev_get_drvdata(dev); \
return sprintf(buf, "%d (%d rpm)\n", \
- thermostat->last_speed[data], \
- read_fan_speed(thermostat, FAN_SPEED[data]) \
+ th->last_speed[data], \
+ read_fan_speed(th, FAN_SPEED[data]) \
); \
}
#define BUILD_STORE_FUNC_DEG(name, data) \
static ssize_t store_##name(struct device *dev, struct device_attribute *attr, const char *buf, size_t n) \
{ \
+ struct thermostat *th = dev_get_drvdata(dev); \
int val; \
int i; \
val = simple_strtol(buf, NULL, 10); \
printk(KERN_INFO "Adjusting limits by %d degrees\n", val); \
limit_adjust = val; \
for (i=0; i < 3; i++) \
- set_limit(thermostat, i); \
+ set_limit(th, i); \
return n; \
}
@@ -525,20 +371,21 @@ static ssize_t store_##name(struct device *dev, struct device_attribute *attr, c
return n; \
}
-BUILD_SHOW_FUNC_INT(sensor1_temperature, (read_reg(thermostat, TEMP_REG[1])))
-BUILD_SHOW_FUNC_INT(sensor2_temperature, (read_reg(thermostat, TEMP_REG[2])))
-BUILD_SHOW_FUNC_INT(sensor1_limit, thermostat->limits[1])
-BUILD_SHOW_FUNC_INT(sensor2_limit, thermostat->limits[2])
+BUILD_SHOW_FUNC_INT(sensor1_temperature, (read_reg(th, TEMP_REG[1])))
+BUILD_SHOW_FUNC_INT(sensor2_temperature, (read_reg(th, TEMP_REG[2])))
+BUILD_SHOW_FUNC_INT(sensor1_limit, th->limits[1])
+BUILD_SHOW_FUNC_INT(sensor2_limit, th->limits[2])
BUILD_SHOW_FUNC_STR(sensor1_location, sensor_location[1])
BUILD_SHOW_FUNC_STR(sensor2_location, sensor_location[2])
-BUILD_SHOW_FUNC_INT(specified_fan_speed, fan_speed)
+BUILD_SHOW_FUNC_INT_LITE(specified_fan_speed, fan_speed)
+BUILD_STORE_FUNC_INT(specified_fan_speed,fan_speed)
+
BUILD_SHOW_FUNC_FAN(sensor1_fan_speed, 0)
BUILD_SHOW_FUNC_FAN(sensor2_fan_speed, 1)
-BUILD_STORE_FUNC_INT(specified_fan_speed,fan_speed)
-BUILD_SHOW_FUNC_INT(limit_adjust, limit_adjust)
-BUILD_STORE_FUNC_DEG(limit_adjust, thermostat)
+BUILD_SHOW_FUNC_INT_LITE(limit_adjust, limit_adjust)
+BUILD_STORE_FUNC_DEG(limit_adjust, th)
static DEVICE_ATTR(sensor1_temperature, S_IRUGO,
show_sensor1_temperature,NULL);
@@ -564,53 +411,77 @@ static DEVICE_ATTR(sensor2_fan_speed, S_IRUGO,
static DEVICE_ATTR(limit_adjust, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH,
show_limit_adjust, store_limit_adjust);
-
-static int __init
-thermostat_init(void)
+static void thermostat_create_files(struct thermostat *th)
{
- struct device_node* np;
- const u32 *prop;
- int i = 0, offset = 0;
+ struct device_node *np = th->clt->dev.of_node;
+ struct device *dev;
+ int err;
- np = of_find_node_by_name(NULL, "fan");
- if (!np)
- return -ENODEV;
- if (of_device_is_compatible(np, "adt7460"))
- therm_type = ADT7460;
- else if (of_device_is_compatible(np, "adt7467"))
- therm_type = ADT7467;
- else {
- of_node_put(np);
- return -ENODEV;
- }
+ /* To maintain ABI compatibility with userspace, create
+ * the old style platform driver and attach the attributes
+ * to it here
+ */
+ th->pdev = of_platform_device_create(np, "temperatures", NULL);
+ if (!th->pdev)
+ return;
+ dev = &th->pdev->dev;
+ dev_set_drvdata(dev, th);
+ err = device_create_file(dev, &dev_attr_sensor1_temperature);
+ err |= device_create_file(dev, &dev_attr_sensor2_temperature);
+ err |= device_create_file(dev, &dev_attr_sensor1_limit);
+ err |= device_create_file(dev, &dev_attr_sensor2_limit);
+ err |= device_create_file(dev, &dev_attr_sensor1_location);
+ err |= device_create_file(dev, &dev_attr_sensor2_location);
+ err |= device_create_file(dev, &dev_attr_limit_adjust);
+ err |= device_create_file(dev, &dev_attr_specified_fan_speed);
+ err |= device_create_file(dev, &dev_attr_sensor1_fan_speed);
+ if(th->type == ADT7460)
+ err |= device_create_file(dev, &dev_attr_sensor2_fan_speed);
+ if (err)
+ printk(KERN_WARNING
+ "Failed to create temperature attribute file(s).\n");
+}
- prop = of_get_property(np, "hwsensor-params-version", NULL);
- printk(KERN_INFO "adt746x: version %d (%ssupported)\n", *prop,
- (*prop == 1)?"":"un");
- if (*prop != 1) {
- of_node_put(np);
- return -ENODEV;
- }
+static void thermostat_remove_files(struct thermostat *th)
+{
+ struct device *dev;
- prop = of_get_property(np, "reg", NULL);
- if (!prop) {
- of_node_put(np);
- return -ENODEV;
- }
+ if (!th->pdev)
+ return;
+ dev = &th->pdev->dev;
+ device_remove_file(dev, &dev_attr_sensor1_temperature);
+ device_remove_file(dev, &dev_attr_sensor2_temperature);
+ device_remove_file(dev, &dev_attr_sensor1_limit);
+ device_remove_file(dev, &dev_attr_sensor2_limit);
+ device_remove_file(dev, &dev_attr_sensor1_location);
+ device_remove_file(dev, &dev_attr_sensor2_location);
+ device_remove_file(dev, &dev_attr_limit_adjust);
+ device_remove_file(dev, &dev_attr_specified_fan_speed);
+ device_remove_file(dev, &dev_attr_sensor1_fan_speed);
+ if (th->type == ADT7460)
+ device_remove_file(dev, &dev_attr_sensor2_fan_speed);
+ of_device_unregister(th->pdev);
- /* look for bus either by path or using "reg" */
- if (strstr(np->full_name, "/i2c-bus@") != NULL) {
- const char *tmp_bus = (strstr(np->full_name, "/i2c-bus@") + 9);
- therm_bus = tmp_bus[0]-'0';
- } else {
- therm_bus = ((*prop) >> 8) & 0x0f;
- }
+}
- therm_address = ((*prop) & 0xff) >> 1;
+static int probe_thermostat(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device_node *np = client->dev.of_node;
+ struct thermostat* th;
+ const __be32 *prop;
+ int i, rc, vers, offset = 0;
- printk(KERN_INFO "adt746x: Thermostat bus: %d, address: 0x%02x, "
- "limit_adjust: %d, fan_speed: %d\n",
- therm_bus, therm_address, limit_adjust, fan_speed);
+ if (!np)
+ return -ENXIO;
+ prop = of_get_property(np, "hwsensor-params-version", NULL);
+ if (!prop)
+ return -ENXIO;
+ vers = be32_to_cpup(prop);
+ printk(KERN_INFO "adt746x: version %d (%ssupported)\n",
+ vers, vers == 1 ? "" : "un");
+ if (vers != 1)
+ return -ENXIO;
if (of_get_property(np, "hwsensor-location", NULL)) {
for (i = 0; i < 3; i++) {
@@ -623,72 +494,129 @@ thermostat_init(void)
printk(KERN_INFO "sensor %d: %s\n", i, sensor_location[i]);
offset += strlen(sensor_location[i]) + 1;
}
- } else {
- sensor_location[0] = "?";
- sensor_location[1] = "?";
- sensor_location[2] = "?";
}
- of_dev = of_platform_device_create(np, "temperatures", NULL);
- of_node_put(np);
+ th = kzalloc(sizeof(struct thermostat), GFP_KERNEL);
+ if (!th)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, th);
+ th->clt = client;
+ th->type = id->driver_data;
- if (of_dev == NULL) {
- printk(KERN_ERR "Can't register temperatures device !\n");
+ rc = read_reg(th, CONFIG_REG);
+ if (rc < 0) {
+ dev_err(&client->dev, "Thermostat failed to read config!\n");
+ kfree(th);
return -ENODEV;
}
-#ifndef CONFIG_I2C_POWERMAC
- request_module("i2c-powermac");
-#endif
+ /* force manual control to start the fan quieter */
+ if (fan_speed == -1)
+ fan_speed = 64;
+
+ if (th->type == ADT7460) {
+ printk(KERN_INFO "adt746x: ADT7460 initializing\n");
+ /* The 7460 needs to be started explicitly */
+ write_reg(th, CONFIG_REG, 1);
+ } else
+ printk(KERN_INFO "adt746x: ADT7467 initializing\n");
- return i2c_add_driver(&thermostat_driver);
+ for (i = 0; i < 3; i++) {
+ th->initial_limits[i] = read_reg(th, LIMIT_REG[i]);
+ set_limit(th, i);
+ }
+
+ printk(KERN_INFO "adt746x: Lowering max temperatures from %d, %d, %d"
+ " to %d, %d, %d\n",
+ th->initial_limits[0], th->initial_limits[1],
+ th->initial_limits[2], th->limits[0], th->limits[1],
+ th->limits[2]);
+
+ /* record invert bit status because fw can corrupt it after suspend */
+ th->pwm_inv[0] = read_reg(th, MANUAL_MODE[0]) & INVERT_MASK;
+ th->pwm_inv[1] = read_reg(th, MANUAL_MODE[1]) & INVERT_MASK;
+
+ /* be sure to really write fan speed the first time */
+ th->last_speed[0] = -2;
+ th->last_speed[1] = -2;
+ th->last_var[0] = -80;
+ th->last_var[1] = -80;
+
+ if (fan_speed != -1) {
+ /* manual mode, stop fans */
+ write_both_fan_speed(th, 0);
+ } else {
+ /* automatic mode */
+ write_both_fan_speed(th, -1);
+ }
+
+ th->thread = kthread_run(monitor_task, th, "kfand");
+ if (th->thread == ERR_PTR(-ENOMEM)) {
+ printk(KERN_INFO "adt746x: Kthread creation failed\n");
+ th->thread = NULL;
+ return -ENOMEM;
+ }
+
+ thermostat_create_files(th);
+
+ return 0;
}
-static void thermostat_create_files(void)
+static int remove_thermostat(struct i2c_client *client)
{
- int err;
+ struct thermostat *th = i2c_get_clientdata(client);
+ int i;
+
+ thermostat_remove_files(th);
- err = device_create_file(&of_dev->dev, &dev_attr_sensor1_temperature);
- err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_temperature);
- err |= device_create_file(&of_dev->dev, &dev_attr_sensor1_limit);
- err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_limit);
- err |= device_create_file(&of_dev->dev, &dev_attr_sensor1_location);
- err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_location);
- err |= device_create_file(&of_dev->dev, &dev_attr_limit_adjust);
- err |= device_create_file(&of_dev->dev, &dev_attr_specified_fan_speed);
- err |= device_create_file(&of_dev->dev, &dev_attr_sensor1_fan_speed);
- if(therm_type == ADT7460)
- err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_fan_speed);
- if (err)
- printk(KERN_WARNING
- "Failed to create temperature attribute file(s).\n");
+ if (th->thread != NULL)
+ kthread_stop(th->thread);
+
+ printk(KERN_INFO "adt746x: Putting max temperatures back from "
+ "%d, %d, %d to %d, %d, %d\n",
+ th->limits[0], th->limits[1], th->limits[2],
+ th->initial_limits[0], th->initial_limits[1],
+ th->initial_limits[2]);
+
+ for (i = 0; i < 3; i++)
+ write_reg(th, LIMIT_REG[i], th->initial_limits[i]);
+
+ write_both_fan_speed(th, -1);
+
+ kfree(th);
+
+ return 0;
}
-static void thermostat_remove_files(void)
+static const struct i2c_device_id therm_adt746x_id[] = {
+ { "MAC,adt7460", ADT7460 },
+ { "MAC,adt7467", ADT7467 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, therm_adt746x_id);
+
+static struct i2c_driver thermostat_driver = {
+ .driver = {
+ .name = "therm_adt746x",
+ },
+ .probe = probe_thermostat,
+ .remove = remove_thermostat,
+ .id_table = therm_adt746x_id,
+};
+
+static int __init thermostat_init(void)
{
- if (of_dev) {
- device_remove_file(&of_dev->dev, &dev_attr_sensor1_temperature);
- device_remove_file(&of_dev->dev, &dev_attr_sensor2_temperature);
- device_remove_file(&of_dev->dev, &dev_attr_sensor1_limit);
- device_remove_file(&of_dev->dev, &dev_attr_sensor2_limit);
- device_remove_file(&of_dev->dev, &dev_attr_sensor1_location);
- device_remove_file(&of_dev->dev, &dev_attr_sensor2_location);
- device_remove_file(&of_dev->dev, &dev_attr_limit_adjust);
- device_remove_file(&of_dev->dev, &dev_attr_specified_fan_speed);
- device_remove_file(&of_dev->dev, &dev_attr_sensor1_fan_speed);
-
- if(therm_type == ADT7460)
- device_remove_file(&of_dev->dev,
- &dev_attr_sensor2_fan_speed);
+#ifndef CONFIG_I2C_POWERMAC
+ request_module("i2c-powermac");
+#endif
- }
+ return i2c_add_driver(&thermostat_driver);
}
-static void __exit
-thermostat_exit(void)
+static void __exit thermostat_exit(void)
{
i2c_del_driver(&thermostat_driver);
- of_device_unregister(of_dev);
}
module_init(thermostat_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 20:29:34 +0100