diff options
Diffstat (limited to 'drivers/hwmon/max6639.c')
| -rw-r--r-- | drivers/hwmon/max6639.c | 50 |
1 files changed, 24 insertions, 26 deletions
diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c index e10a092c603..de8f7adaccb 100644 --- a/drivers/hwmon/max6639.c +++ b/drivers/hwmon/max6639.c @@ -72,8 +72,8 @@ static unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END }; static const int rpm_ranges[] = { 2000, 4000, 8000, 16000 }; -#define FAN_FROM_REG(val, div, rpm_range) ((val) == 0 ? -1 : \ - (val) == 255 ? 0 : (rpm_ranges[rpm_range] * 30) / ((div + 1) * (val))) +#define FAN_FROM_REG(val, rpm_range) ((val) == 0 || (val) == 255 ? \ + 0 : (rpm_ranges[rpm_range] * 30) / (val)) #define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val) / 1000, 0, 255) /* @@ -333,7 +333,7 @@ static ssize_t show_fan_input(struct device *dev, return PTR_ERR(data); return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index], - data->ppr, data->rpm_range)); + data->rpm_range)); } static ssize_t show_alarm(struct device *dev, @@ -429,9 +429,9 @@ static int max6639_init_client(struct i2c_client *client) struct max6639_data *data = i2c_get_clientdata(client); struct max6639_platform_data *max6639_info = client->dev.platform_data; - int i = 0; + int i; int rpm_range = 1; /* default: 4000 RPM */ - int err = 0; + int err; /* Reset chip to default values, see below for GCONFIG setup */ err = i2c_smbus_write_byte_data(client, MAX6639_REG_GCONFIG, @@ -446,11 +446,6 @@ static int max6639_init_client(struct i2c_client *client) else data->ppr = 2; data->ppr -= 1; - err = i2c_smbus_write_byte_data(client, - MAX6639_REG_FAN_PPR(i), - data->ppr << 5); - if (err) - goto exit; if (max6639_info) rpm_range = rpm_range_to_reg(max6639_info->rpm_range); @@ -458,6 +453,13 @@ static int max6639_init_client(struct i2c_client *client) for (i = 0; i < 2; i++) { + /* Set Fan pulse per revolution */ + err = i2c_smbus_write_byte_data(client, + MAX6639_REG_FAN_PPR(i), + data->ppr << 6); + if (err) + goto exit; + /* Fans config PWM, RPM */ err = i2c_smbus_write_byte_data(client, MAX6639_REG_FAN_CONFIG1(i), @@ -594,8 +596,10 @@ static int max6639_remove(struct i2c_client *client) return 0; } -static int max6639_suspend(struct i2c_client *client, pm_message_t mesg) +#ifdef CONFIG_PM_SLEEP +static int max6639_suspend(struct device *dev) { + struct i2c_client *client = to_i2c_client(dev); int data = i2c_smbus_read_byte_data(client, MAX6639_REG_GCONFIG); if (data < 0) return data; @@ -604,8 +608,9 @@ static int max6639_suspend(struct i2c_client *client, pm_message_t mesg) MAX6639_REG_GCONFIG, data | MAX6639_GCONFIG_STANDBY); } -static int max6639_resume(struct i2c_client *client) +static int max6639_resume(struct device *dev) { + struct i2c_client *client = to_i2c_client(dev); int data = i2c_smbus_read_byte_data(client, MAX6639_REG_GCONFIG); if (data < 0) return data; @@ -613,6 +618,7 @@ static int max6639_resume(struct i2c_client *client) return i2c_smbus_write_byte_data(client, MAX6639_REG_GCONFIG, data & ~MAX6639_GCONFIG_STANDBY); } +#endif /* CONFIG_PM_SLEEP */ static const struct i2c_device_id max6639_id[] = { {"max6639", 0}, @@ -621,33 +627,25 @@ static const struct i2c_device_id max6639_id[] = { MODULE_DEVICE_TABLE(i2c, max6639_id); +static const struct dev_pm_ops max6639_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(max6639_suspend, max6639_resume) +}; + static struct i2c_driver max6639_driver = { .class = I2C_CLASS_HWMON, .driver = { .name = "max6639", + .pm = &max6639_pm_ops, }, .probe = max6639_probe, .remove = max6639_remove, - .suspend = max6639_suspend, - .resume = max6639_resume, .id_table = max6639_id, .detect = max6639_detect, .address_list = normal_i2c, }; -static int __init max6639_init(void) -{ - return i2c_add_driver(&max6639_driver); -} - -static void __exit max6639_exit(void) -{ - i2c_del_driver(&max6639_driver); -} +module_i2c_driver(max6639_driver); MODULE_AUTHOR("Roland Stigge <stigge@antcom.de>"); MODULE_DESCRIPTION("max6639 driver"); MODULE_LICENSE("GPL"); - -module_init(max6639_init); -module_exit(max6639_exit); |