diff options
| -rw-r--r-- | drivers/hwmon/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/hwmon/smsc47b397.c | 164 |
2 files changed, 109 insertions, 58 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 065851a77cc..5216da02b8b 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -477,8 +477,7 @@ config SENSORS_SMSC47M192 config SENSORS_SMSC47B397 tristate "SMSC LPC47B397-NC" - depends on HWMON && I2C && EXPERIMENTAL - select I2C_ISA + depends on HWMON && EXPERIMENTAL help If you say yes here you get support for the SMSC LPC47B397-NC sensor chip. diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c index 72b0e2d8650..09df56118e1 100644 --- a/drivers/hwmon/smsc47b397.c +++ b/drivers/hwmon/smsc47b397.c @@ -30,16 +30,16 @@ #include <linux/slab.h> #include <linux/ioport.h> #include <linux/jiffies.h> -#include <linux/i2c.h> -#include <linux/i2c-isa.h> +#include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/err.h> #include <linux/init.h> #include <linux/mutex.h> #include <asm/io.h> -/* Address is autodetected, there is no default value */ -static unsigned short address; +static struct platform_device *pdev; + +#define DRVNAME "smsc47b397" /* Super-I/0 registers and commands */ @@ -91,7 +91,8 @@ static u8 smsc47b397_reg_temp[] = {0x25, 0x26, 0x27, 0x80}; #define SMSC47B397_REG_FAN_MSB(nr) (0x29 + 2 * (nr)) struct smsc47b397_data { - struct i2c_client client; + unsigned short addr; + const char *name; struct class_device *class_dev; struct mutex lock; @@ -104,45 +105,43 @@ struct smsc47b397_data { u8 temp[4]; }; -static int smsc47b397_read_value(struct i2c_client *client, u8 reg) +static int smsc47b397_read_value(struct smsc47b397_data* data, u8 reg) { - struct smsc47b397_data *data = i2c_get_clientdata(client); int res; mutex_lock(&data->lock); - outb(reg, client->addr); - res = inb_p(client->addr + 1); + outb(reg, data->addr); + res = inb_p(data->addr + 1); mutex_unlock(&data->lock); return res; } static struct smsc47b397_data *smsc47b397_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct smsc47b397_data *data = i2c_get_clientdata(client); + struct smsc47b397_data *data = dev_get_drvdata(dev); int i; mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { - dev_dbg(&client->dev, "starting device update...\n"); + dev_dbg(dev, "starting device update...\n"); /* 4 temperature inputs, 4 fan inputs */ for (i = 0; i < 4; i++) { - data->temp[i] = smsc47b397_read_value(client, + data->temp[i] = smsc47b397_read_value(data, SMSC47B397_REG_TEMP(i)); /* must read LSB first */ - data->fan[i] = smsc47b397_read_value(client, + data->fan[i] = smsc47b397_read_value(data, SMSC47B397_REG_FAN_LSB(i)); - data->fan[i] |= smsc47b397_read_value(client, + data->fan[i] |= smsc47b397_read_value(data, SMSC47B397_REG_FAN_MSB(i)) << 8; } data->last_updated = jiffies; data->valid = 1; - dev_dbg(&client->dev, "... device update complete\n"); + dev_dbg(dev, "... device update complete\n"); } mutex_unlock(&data->update_lock); @@ -202,6 +201,14 @@ sysfs_fan(2); sysfs_fan(3); sysfs_fan(4); +static ssize_t show_name(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct smsc47b397_data *data = dev_get_drvdata(dev); + return sprintf(buf, "%s\n", data->name); +} +static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); + static struct attribute *smsc47b397_attributes[] = { &dev_attr_temp1_input.attr, &dev_attr_temp2_input.attr, @@ -212,6 +219,7 @@ static struct attribute *smsc47b397_attributes[] = { &dev_attr_fan3_input.attr, &dev_attr_fan4_input.attr, + &dev_attr_name.attr, NULL }; @@ -219,44 +227,44 @@ static const struct attribute_group smsc47b397_group = { .attrs = smsc47b397_attributes, }; -static int smsc47b397_detach_client(struct i2c_client *client) +static int __devexit smsc47b397_remove(struct platform_device *pdev) { - struct smsc47b397_data *data = i2c_get_clientdata(client); - int err; + struct smsc47b397_data *data = platform_get_drvdata(pdev); + struct resource *res; hwmon_device_unregister(data->class_dev); - sysfs_remove_group(&client->dev.kobj, &smsc47b397_group); - - if ((err = i2c_detach_client(client))) - return err; - - release_region(client->addr, SMSC_EXTENT); + sysfs_remove_group(&pdev->dev.kobj, &smsc47b397_group); + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + release_region(res->start, SMSC_EXTENT); kfree(data); return 0; } -static int smsc47b397_detect(struct i2c_adapter *adapter); +static int smsc47b397_probe(struct platform_device *pdev); -static struct i2c_driver smsc47b397_driver = { +static struct platform_driver smsc47b397_driver = { .driver = { .owner = THIS_MODULE, - .name = "smsc47b397", + .name = DRVNAME, }, - .attach_adapter = smsc47b397_detect, - .detach_client = smsc47b397_detach_client, + .probe = smsc47b397_probe, + .remove = __devexit_p(smsc47b397_remove), }; -static int smsc47b397_detect(struct i2c_adapter *adapter) +static int __devinit smsc47b397_probe(struct platform_device *pdev) { - struct i2c_client *new_client; + struct device *dev = &pdev->dev; struct smsc47b397_data *data; + struct resource *res; int err = 0; - if (!request_region(address, SMSC_EXTENT, + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!request_region(res->start, SMSC_EXTENT, smsc47b397_driver.driver.name)) { - dev_err(&adapter->dev, "Region 0x%x already in use!\n", - address); + dev_err(dev, "Region 0x%lx-0x%lx already in use!\n", + (unsigned long)res->start, + (unsigned long)res->start + SMSC_EXTENT - 1); return -EBUSY; } @@ -265,25 +273,16 @@ static int smsc47b397_detect(struct i2c_adapter *adapter) goto error_release; } - new_client = &data->client; - i2c_set_clientdata(new_client, data); - new_client->addr = address; + data->addr = res->start; + data->name = "smsc47b397"; mutex_init(&data->lock); - new_client->adapter = adapter; - new_client->driver = &smsc47b397_driver; - new_client->flags = 0; - - strlcpy(new_client->name, "smsc47b397", I2C_NAME_SIZE); - mutex_init(&data->update_lock); + platform_set_drvdata(pdev, data); - if ((err = i2c_attach_client(new_client))) + if ((err = sysfs_create_group(&dev->kobj, &smsc47b397_group))) goto error_free; - if ((err = sysfs_create_group(&new_client->dev.kobj, &smsc47b397_group))) - goto error_detach; - - data->class_dev = hwmon_device_register(&new_client->dev); + data->class_dev = hwmon_device_register(dev); if (IS_ERR(data->class_dev)) { err = PTR_ERR(data->class_dev); goto error_remove; @@ -292,13 +291,50 @@ static int smsc47b397_detect(struct i2c_adapter *adapter) return 0; error_remove: - sysfs_remove_group(&new_client->dev.kobj, &smsc47b397_group); -error_detach: - i2c_detach_client(new_client); + sysfs_remove_group(&dev->kobj, &smsc47b397_group); error_free: kfree(data); error_release: - release_region(address, SMSC_EXTENT); + release_region(res->start, SMSC_EXTENT); + return err; +} + +static int __init smsc47b397_device_add(unsigned short address) +{ + struct resource res = { + .start = address, + .end = address + SMSC_EXTENT - 1, + .name = DRVNAME, + .flags = IORESOURCE_IO, + }; + int err; + + pdev = platform_device_alloc(DRVNAME, address); + if (!pdev) { + err = -ENOMEM; + printk(KERN_ERR DRVNAME ": Device allocation failed\n"); + goto exit; + } + + err = platform_device_add_resources(pdev, &res, 1); + if (err) { + printk(KERN_ERR DRVNAME ": Device resource addition failed " + "(%d)\n", err); + goto exit_device_put; + } + + err = platform_device_add(pdev); + if (err) { + printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", + err); + goto exit_device_put; + } + + return 0; + +exit_device_put: + platform_device_put(pdev); +exit: return err; } @@ -320,7 +356,7 @@ static int __init smsc47b397_find(unsigned short *addr) *addr = (superio_inb(SUPERIO_REG_BASE_MSB) << 8) | superio_inb(SUPERIO_REG_BASE_LSB); - printk(KERN_INFO "smsc47b397: found SMSC %s " + printk(KERN_INFO DRVNAME ": found SMSC %s " "(base address 0x%04x, revision %u)\n", id == 0x81 ? "SCH5307-NS" : "LPC47B397-NC", *addr, rev); @@ -330,17 +366,33 @@ static int __init smsc47b397_find(unsigned short *addr) static int __init smsc47b397_init(void) { + unsigned short address; int ret; if ((ret = smsc47b397_find(&address))) return ret; - return i2c_isa_add_driver(&smsc47b397_driver); + ret = platform_driver_register(&smsc47b397_driver); + if (ret) + goto exit; + + /* Sets global pdev as a side effect */ + ret = smsc47b397_device_add(address); + if (ret) + goto exit_driver; + + return 0; + +exit_driver: + platform_driver_unregister(&smsc47b397_driver); +exit: + return ret; } static void __exit smsc47b397_exit(void) { - i2c_isa_del_driver(&smsc47b397_driver); + platform_device_unregister(pdev); + platform_driver_unregister(&smsc47b397_driver); } MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>"); |