X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fhwmon%2Fsmsc47b397.c;h=f61d8f4185b243efcf7bd3fb0f10fa6284dde6d2;hb=6e766458f78ca15198cf046bc098b36e40c8b471;hp=72b0e2d8650ca1df9b5297190e28837ba5296858;hpb=c972398b7871d9fb58c6a317786065a7cc6ca4be;p=linux-2.6-omap-h63xx.git diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c index 72b0e2d8650..f61d8f4185b 100644 --- a/drivers/hwmon/smsc47b397.c +++ b/drivers/hwmon/smsc47b397.c @@ -30,16 +30,21 @@ #include #include #include -#include -#include +#include #include +#include #include #include #include #include -/* Address is autodetected, there is no default value */ -static unsigned short address; +static unsigned short force_id; +module_param(force_id, ushort, 0); +MODULE_PARM_DESC(force_id, "Override the detected device ID"); + +static struct platform_device *pdev; + +#define DRVNAME "smsc47b397" /* Super-I/0 registers and commands */ @@ -91,8 +96,9 @@ 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; - struct class_device *class_dev; + unsigned short addr; + const char *name; + struct device *hwmon_dev; struct mutex lock; struct mutex update_lock; @@ -104,45 +110,43 @@ 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); @@ -157,61 +161,59 @@ static int temp_from_reg(u8 reg) return (s8)reg * 1000; } -/* 0 <= nr <= 3 */ -static ssize_t show_temp(struct device *dev, char *buf, int nr) +static ssize_t show_temp(struct device *dev, struct device_attribute + *devattr, char *buf) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct smsc47b397_data *data = smsc47b397_update_device(dev); - return sprintf(buf, "%d\n", temp_from_reg(data->temp[nr])); + return sprintf(buf, "%d\n", temp_from_reg(data->temp[attr->index])); } -#define sysfs_temp(num) \ -static ssize_t show_temp##num(struct device *dev, struct device_attribute *attr, char *buf) \ -{ \ - return show_temp(dev, buf, num-1); \ -} \ -static DEVICE_ATTR(temp##num##_input, S_IRUGO, show_temp##num, NULL) - -sysfs_temp(1); -sysfs_temp(2); -sysfs_temp(3); -sysfs_temp(4); +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); +static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); +static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); +static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); /* FAN: 1 RPM/bit REG: count of 90kHz pulses / revolution */ static int fan_from_reg(u16 reg) { + if (reg == 0 || reg == 0xffff) + return 0; return 90000 * 60 / reg; } -/* 0 <= nr <= 3 */ -static ssize_t show_fan(struct device *dev, char *buf, int nr) +static ssize_t show_fan(struct device *dev, struct device_attribute + *devattr, char *buf) { - struct smsc47b397_data *data = smsc47b397_update_device(dev); - return sprintf(buf, "%d\n", fan_from_reg(data->fan[nr])); + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct smsc47b397_data *data = smsc47b397_update_device(dev); + return sprintf(buf, "%d\n", fan_from_reg(data->fan[attr->index])); } +static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); +static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); +static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); +static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); -#define sysfs_fan(num) \ -static ssize_t show_fan##num(struct device *dev, struct device_attribute *attr, char *buf) \ -{ \ - return show_fan(dev, buf, num-1); \ -} \ -static DEVICE_ATTR(fan##num##_input, S_IRUGO, show_fan##num, NULL) - -sysfs_fan(1); -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, - &dev_attr_temp3_input.attr, - &dev_attr_temp4_input.attr, - &dev_attr_fan1_input.attr, - &dev_attr_fan2_input.attr, - &dev_attr_fan3_input.attr, - &dev_attr_fan4_input.attr, - + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp4_input.dev_attr.attr, + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan4_input.dev_attr.attr, + + &dev_attr_name.attr, NULL }; @@ -219,44 +221,44 @@ 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; - - hwmon_device_unregister(data->class_dev); - sysfs_remove_group(&client->dev.kobj, &smsc47b397_group); + struct smsc47b397_data *data = platform_get_drvdata(pdev); + struct resource *res; - if ((err = i2c_detach_client(client))) - return err; - - release_region(client->addr, SMSC_EXTENT); + hwmon_device_unregister(data->hwmon_dev); + 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; } @@ -265,40 +267,68 @@ 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); - if (IS_ERR(data->class_dev)) { - err = PTR_ERR(data->class_dev); + data->hwmon_dev = hwmon_device_register(dev); + if (IS_ERR(data->hwmon_dev)) { + err = PTR_ERR(data->hwmon_dev); goto error_remove; } 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; } @@ -307,9 +337,9 @@ static int __init smsc47b397_find(unsigned short *addr) u8 id, rev; superio_enter(); - id = superio_inb(SUPERIO_REG_DEVID); + id = force_id ? force_id : superio_inb(SUPERIO_REG_DEVID); - if ((id != 0x6f) && (id != 0x81)) { + if ((id != 0x6f) && (id != 0x81) && (id != 0x85)) { superio_exit(); return -ENODEV; } @@ -320,9 +350,10 @@ 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); + id == 0x81 ? "SCH5307-NS" : id == 0x85 ? "SCH5317" : + "LPC47B397-NC", *addr, rev); superio_exit(); return 0; @@ -330,17 +361,33 @@ 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 ");