* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
#include <linux/init.h>
-#include <linux/slab.h>
#include <linux/jiffies.h>
-#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
-#include <linux/err.h>
+#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/slab.h>
#include <linux/sysfs.h>
#define DEVNAME "lm95241"
#define LM95241_REG_RW_REMOTE_MODEL 0x30
/* LM95241 specific bitfields */
-#define CFG_STOP 0x40
-#define CFG_CR0076 0x00
-#define CFG_CR0182 0x10
-#define CFG_CR1000 0x20
-#define CFG_CR2700 0x30
-#define R1MS_SHIFT 0
-#define R2MS_SHIFT 2
-#define R1MS_MASK (0x01 << (R1MS_SHIFT))
-#define R2MS_MASK (0x01 << (R2MS_SHIFT))
-#define R1DF_SHIFT 1
-#define R2DF_SHIFT 2
-#define R1DF_MASK (0x01 << (R1DF_SHIFT))
-#define R2DF_MASK (0x01 << (R2DF_SHIFT))
-#define R1FE_MASK 0x01
-#define R2FE_MASK 0x05
-#define TT1_SHIFT 0
-#define TT2_SHIFT 4
-#define TT_OFF 0
-#define TT_ON 1
-#define TT_MASK 7
+#define CFG_STOP BIT(6)
+#define CFG_CR0076 0x00
+#define CFG_CR0182 BIT(4)
+#define CFG_CR1000 BIT(5)
+#define CFG_CR2700 (BIT(4) | BIT(5))
+#define CFG_CRMASK (BIT(4) | BIT(5))
+#define R1MS_MASK BIT(0)
+#define R2MS_MASK BIT(2)
+#define R1DF_MASK BIT(1)
+#define R2DF_MASK BIT(2)
+#define R1FE_MASK BIT(0)
+#define R2FE_MASK BIT(2)
+#define R1DM BIT(0)
+#define R2DM BIT(1)
+#define TT1_SHIFT 0
+#define TT2_SHIFT 4
+#define TT_OFF 0
+#define TT_ON 1
+#define TT_MASK 7
#define NATSEMI_MAN_ID 0x01
#define LM95231_CHIP_ID 0xA1
#define LM95241_CHIP_ID 0xA4
struct lm95241_data {
struct i2c_client *client;
struct mutex update_lock;
- unsigned long last_updated, interval; /* in jiffies */
+ unsigned long last_updated; /* in jiffies */
+ unsigned long interval; /* in milli-seconds */
char valid; /* zero until following fields are valid */
/* registers values */
u8 temp[ARRAY_SIZE(lm95241_reg_address)];
- u8 config, model, trutherm;
+ u8 status, config, model, trutherm;
};
/* Conversions */
mutex_lock(&data->update_lock);
- if (time_after(jiffies, data->last_updated + data->interval) ||
+ if (time_after(jiffies, data->last_updated
+ + msecs_to_jiffies(data->interval)) ||
!data->valid) {
int i;
data->temp[i]
= i2c_smbus_read_byte_data(client,
lm95241_reg_address[i]);
+
+ data->status = i2c_smbus_read_byte_data(client,
+ LM95241_REG_R_STATUS);
data->last_updated = jiffies;
data->valid = 1;
}
int index = to_sensor_dev_attr(attr)->index;
return snprintf(buf, PAGE_SIZE - 1, "%d\n",
- index == 0 || (data->config & (1 << (index / 2))) ?
+ index == 0 || (data->config & BIT(index / 2)) ?
temp_from_reg_signed(data->temp[index], data->temp[index + 1]) :
temp_from_reg_unsigned(data->temp[index],
data->temp[index + 1]));
return snprintf(buf, PAGE_SIZE - 1,
data->config & to_sensor_dev_attr(attr)->index ?
- "-127000\n" : "0\n");
+ "-128000\n" : "0\n");
}
static ssize_t set_min(struct device *dev, struct device_attribute *attr,
if (kstrtol(buf, 10, &val) < 0)
return -EINVAL;
- if (val < -128000)
- return -EINVAL;
mutex_lock(&data->update_lock);
return snprintf(buf, PAGE_SIZE - 1,
data->config & to_sensor_dev_attr(attr)->index ?
- "127000\n" : "255000\n");
+ "127875\n" : "255875\n");
}
static ssize_t set_max(struct device *dev, struct device_attribute *attr,
if (kstrtol(buf, 10, &val) < 0)
return -EINVAL;
- if (val >= 256000)
- return -EINVAL;
mutex_lock(&data->update_lock);
return count;
}
+static ssize_t show_fault(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct lm95241_data *data = lm95241_update_device(dev);
+
+ return snprintf(buf, PAGE_SIZE - 1, "%d",
+ !!(data->status & to_sensor_dev_attr(attr)->index));
+}
+
static ssize_t show_interval(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct lm95241_data *data = lm95241_update_device(dev);
- return snprintf(buf, PAGE_SIZE - 1, "%lu\n", 1000 * data->interval
- / HZ);
+ return snprintf(buf, PAGE_SIZE - 1, "%lu\n", data->interval);
}
static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
{
struct lm95241_data *data = dev_get_drvdata(dev);
unsigned long val;
+ int convrate;
+ u8 config;
if (kstrtoul(buf, 10, &val) < 0)
return -EINVAL;
- data->interval = val * HZ / 1000;
+ mutex_lock(&data->update_lock);
+
+ config = data->config & ~CFG_CRMASK;
+
+ if (val < 130) {
+ convrate = 76;
+ config |= CFG_CR0076;
+ } else if (val < 590) {
+ convrate = 182;
+ config |= CFG_CR0182;
+ } else if (val < 1850) {
+ convrate = 1000;
+ config |= CFG_CR1000;
+ } else {
+ convrate = 2700;
+ config |= CFG_CR2700;
+ }
+
+ data->interval = convrate;
+ data->config = config;
+ i2c_smbus_write_byte_data(data->client, LM95241_REG_RW_CONFIG,
+ config);
+ mutex_unlock(&data->update_lock);
return count;
}
R1DF_MASK);
static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_max, set_max,
R2DF_MASK);
+static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_fault, NULL, R1DM);
+static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_fault, NULL, R2DM);
static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
set_interval);
&sensor_dev_attr_temp3_min.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_fault.dev_attr.attr,
+ &sensor_dev_attr_temp3_fault.dev_attr.attr,
&dev_attr_update_interval.attr,
NULL
};
static void lm95241_init_client(struct i2c_client *client,
struct lm95241_data *data)
{
- data->interval = HZ; /* 1 sec default */
- data->config = CFG_CR0076;
+ data->interval = 1000;
+ data->config = CFG_CR1000;
data->trutherm = (TT_OFF << TT1_SHIFT) | (TT_OFF << TT2_SHIFT);
i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config);
projects / mirror_ubuntu-zesty-kernel.git / blobdiff