* This driver also supports the MAX6657, MAX6658 and MAX6659 sensor
* chips made by Maxim. These chips are similar to the LM86.
* Note that there is no easy way to differentiate between the three
- * variants. The extra address and features of the MAX6659 are not
- * supported by this driver. These chips lack the remote temperature
- * offset feature.
+ * variants. We use the device address to detect MAX6659, which will result
+ * in a detection as max6657 if it is on address 0x4c. The extra address
+ * and features of the MAX6659 are only supported if the chip is configured
+ * explicitly as max6659, or if its address is not 0x4c.
+ * These chips lack the remote temperature offset feature.
*
* This driver also supports the MAX6646, MAX6647, MAX6648, MAX6649 and
* MAX6692 chips made by Maxim. These are again similar to the LM86,
* chips. The MAX6680 and MAX6681 only differ in the pinout so they can
* be treated identically.
*
+ * This driver also supports the MAX6695 and MAX6696, two other sensor
+ * chips made by Maxim. These are also quite similar to other Maxim
+ * chips, but support three temperature sensors instead of two. MAX6695
+ * and MAX6696 only differ in the pinout so they can be treated identically.
+ *
* This driver also supports the ADT7461 chip from Analog Devices.
* It's supported in both compatibility and extended mode. It is mostly
* compatible with LM90 except for a data format difference for the
* Addresses to scan
* Address is fully defined internally and cannot be changed except for
* MAX6659, MAX6680 and MAX6681.
- * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657
- * and MAX6658 have address 0x4c.
+ * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657,
+ * MAX6658 and W83L771 have address 0x4c.
* ADM1032-2, ADT7461-2, LM89-1, LM99-1 and MAX6646 have address 0x4d.
* MAX6647 has address 0x4e.
- * MAX6659 can have address 0x4c, 0x4d or 0x4e (unsupported).
+ * MAX6659 can have address 0x4c, 0x4d or 0x4e.
* MAX6680 and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b,
* 0x4c, 0x4d or 0x4e.
*/
static const unsigned short normal_i2c[] = {
0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END };
-enum chips { lm90, adm1032, lm99, lm86, max6657, adt7461, max6680, max6646,
- w83l771 };
+enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
+ max6646, w83l771, max6696 };
/*
* The LM90 registers
#define LM90_REG_R_TCRIT_HYST 0x21
#define LM90_REG_W_TCRIT_HYST 0x21
-/* MAX6646/6647/6649/6657/6658/6659 registers */
+/* MAX6646/6647/6649/6657/6658/6659/6695/6696 registers */
#define MAX6657_REG_R_LOCAL_TEMPL 0x11
+#define MAX6696_REG_R_STATUS2 0x12
+#define MAX6659_REG_R_REMOTE_EMERG 0x16
+#define MAX6659_REG_W_REMOTE_EMERG 0x16
+#define MAX6659_REG_R_LOCAL_EMERG 0x17
+#define MAX6659_REG_W_LOCAL_EMERG 0x17
-/*
- * Device flags
- */
-#define LM90_FLAG_ADT7461_EXT 0x01 /* ADT7461 extended mode */
+#define LM90_DEF_CONVRATE_RVAL 6 /* Def conversion rate register value */
+#define LM90_MAX_CONVRATE_MS 16000 /* Maximum conversion rate in ms */
/*
- * Functions declaration
+ * Device flags
*/
-
-static int lm90_detect(struct i2c_client *client, struct i2c_board_info *info);
-static int lm90_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static void lm90_init_client(struct i2c_client *client);
-static void lm90_alert(struct i2c_client *client, unsigned int flag);
-static int lm90_remove(struct i2c_client *client);
-static struct lm90_data *lm90_update_device(struct device *dev);
+#define LM90_FLAG_ADT7461_EXT (1 << 0) /* ADT7461 extended mode */
+/* Device features */
+#define LM90_HAVE_OFFSET (1 << 1) /* temperature offset register */
+#define LM90_HAVE_LOCAL_EXT (1 << 2) /* extended local temperature */
+#define LM90_HAVE_REM_LIMIT_EXT (1 << 3) /* extended remote limit */
+#define LM90_HAVE_EMERGENCY (1 << 4) /* 3rd upper (emergency) limit */
+#define LM90_HAVE_EMERGENCY_ALARM (1 << 5)/* emergency alarm */
+#define LM90_HAVE_TEMP3 (1 << 6) /* 3rd temperature sensor */
+#define LM90_HAVE_BROKEN_ALERT (1 << 7) /* Broken alert */
/*
* Driver data (common to all clients)
{ "max6649", max6646 },
{ "max6657", max6657 },
{ "max6658", max6657 },
- { "max6659", max6657 },
+ { "max6659", max6659 },
{ "max6680", max6680 },
{ "max6681", max6680 },
+ { "max6695", max6696 },
+ { "max6696", max6696 },
{ "w83l771", w83l771 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm90_id);
-static struct i2c_driver lm90_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "lm90",
+/*
+ * chip type specific parameters
+ */
+struct lm90_params {
+ u32 flags; /* Capabilities */
+ u16 alert_alarms; /* Which alarm bits trigger ALERT# */
+ /* Upper 8 bits for max6695/96 */
+ u8 max_convrate; /* Maximum conversion rate register value */
+};
+
+static const struct lm90_params lm90_params[] = {
+ [adm1032] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
+ | LM90_HAVE_BROKEN_ALERT,
+ .alert_alarms = 0x7c,
+ .max_convrate = 10,
+ },
+ [adt7461] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
+ | LM90_HAVE_BROKEN_ALERT,
+ .alert_alarms = 0x7c,
+ .max_convrate = 10,
+ },
+ [lm86] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
+ .alert_alarms = 0x7b,
+ .max_convrate = 9,
+ },
+ [lm90] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
+ .alert_alarms = 0x7b,
+ .max_convrate = 9,
+ },
+ [lm99] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
+ .alert_alarms = 0x7b,
+ .max_convrate = 9,
+ },
+ [max6646] = {
+ .flags = LM90_HAVE_LOCAL_EXT,
+ .alert_alarms = 0x7c,
+ .max_convrate = 6,
+ },
+ [max6657] = {
+ .flags = LM90_HAVE_LOCAL_EXT,
+ .alert_alarms = 0x7c,
+ .max_convrate = 8,
+ },
+ [max6659] = {
+ .flags = LM90_HAVE_LOCAL_EXT | LM90_HAVE_EMERGENCY,
+ .alert_alarms = 0x7c,
+ .max_convrate = 8,
+ },
+ [max6680] = {
+ .flags = LM90_HAVE_OFFSET,
+ .alert_alarms = 0x7c,
+ .max_convrate = 7,
+ },
+ [max6696] = {
+ .flags = LM90_HAVE_LOCAL_EXT | LM90_HAVE_EMERGENCY
+ | LM90_HAVE_EMERGENCY_ALARM | LM90_HAVE_TEMP3,
+ .alert_alarms = 0x187c,
+ .max_convrate = 6,
+ },
+ [w83l771] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
+ .alert_alarms = 0x7c,
+ .max_convrate = 8,
},
- .probe = lm90_probe,
- .remove = lm90_remove,
- .alert = lm90_alert,
- .id_table = lm90_id,
- .detect = lm90_detect,
- .address_list = normal_i2c,
};
/*
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* in jiffies */
int kind;
- int flags;
+ u32 flags;
+
+ int update_interval; /* in milliseconds */
u8 config_orig; /* Original configuration register value */
- u8 alert_alarms; /* Which alarm bits trigger ALERT# */
+ u8 convrate_orig; /* Original conversion rate register value */
+ u16 alert_alarms; /* Which alarm bits trigger ALERT# */
+ /* Upper 8 bits for max6695/96 */
+ u8 max_convrate; /* Maximum conversion rate */
/* registers values */
- s8 temp8[4]; /* 0: local low limit
+ s8 temp8[8]; /* 0: local low limit
1: local high limit
2: local critical limit
- 3: remote critical limit */
- s16 temp11[5]; /* 0: remote input
+ 3: remote critical limit
+ 4: local emergency limit (max6659 and max6695/96)
+ 5: remote emergency limit (max6659 and max6695/96)
+ 6: remote 2 critical limit (max6695/96 only)
+ 7: remote 2 emergency limit (max6695/96 only) */
+ s16 temp11[8]; /* 0: remote input
1: remote low limit
2: remote high limit
- 3: remote offset (except max6646 and max6657)
- 4: local input */
+ 3: remote offset (except max6646, max6657/58/59,
+ and max6695/96)
+ 4: local input
+ 5: remote 2 input (max6695/96 only)
+ 6: remote 2 low limit (max6695/96 only)
+ 7: remote 2 high limit (ma6695/96 only) */
u8 temp_hyst;
- u8 alarms; /* bitvector */
+ u16 alarms; /* bitvector (upper 8 bits for max6695/96) */
};
+/*
+ * Support functions
+ */
+
+/*
+ * The ADM1032 supports PEC but not on write byte transactions, so we need
+ * to explicitly ask for a transaction without PEC.
+ */
+static inline s32 adm1032_write_byte(struct i2c_client *client, u8 value)
+{
+ return i2c_smbus_xfer(client->adapter, client->addr,
+ client->flags & ~I2C_CLIENT_PEC,
+ I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
+}
+
+/*
+ * It is assumed that client->update_lock is held (unless we are in
+ * detection or initialization steps). This matters when PEC is enabled,
+ * because we don't want the address pointer to change between the write
+ * byte and the read byte transactions.
+ */
+static int lm90_read_reg(struct i2c_client *client, u8 reg, u8 *value)
+{
+ int err;
+
+ if (client->flags & I2C_CLIENT_PEC) {
+ err = adm1032_write_byte(client, reg);
+ if (err >= 0)
+ err = i2c_smbus_read_byte(client);
+ } else
+ err = i2c_smbus_read_byte_data(client, reg);
+
+ if (err < 0) {
+ dev_warn(&client->dev, "Register %#02x read failed (%d)\n",
+ reg, err);
+ return err;
+ }
+ *value = err;
+
+ return 0;
+}
+
+static int lm90_read16(struct i2c_client *client, u8 regh, u8 regl, u16 *value)
+{
+ int err;
+ u8 oldh, newh, l;
+
+ /*
+ * There is a trick here. We have to read two registers to have the
+ * sensor temperature, but we have to beware a conversion could occur
+ * inbetween the readings. The datasheet says we should either use
+ * the one-shot conversion register, which we don't want to do
+ * (disables hardware monitoring) or monitor the busy bit, which is
+ * impossible (we can't read the values and monitor that bit at the
+ * exact same time). So the solution used here is to read the high
+ * byte once, then the low byte, then the high byte again. If the new
+ * high byte matches the old one, then we have a valid reading. Else
+ * we have to read the low byte again, and now we believe we have a
+ * correct reading.
+ */
+ if ((err = lm90_read_reg(client, regh, &oldh))
+ || (err = lm90_read_reg(client, regl, &l))
+ || (err = lm90_read_reg(client, regh, &newh)))
+ return err;
+ if (oldh != newh) {
+ err = lm90_read_reg(client, regl, &l);
+ if (err)
+ return err;
+ }
+ *value = (newh << 8) | l;
+
+ return 0;
+}
+
+/*
+ * client->update_lock must be held when calling this function (unless we are
+ * in detection or initialization steps), and while a remote channel other
+ * than channel 0 is selected. Also, calling code must make sure to re-select
+ * external channel 0 before releasing the lock. This is necessary because
+ * various registers have different meanings as a result of selecting a
+ * non-default remote channel.
+ */
+static inline void lm90_select_remote_channel(struct i2c_client *client,
+ struct lm90_data *data,
+ int channel)
+{
+ u8 config;
+
+ if (data->kind == max6696) {
+ lm90_read_reg(client, LM90_REG_R_CONFIG1, &config);
+ config &= ~0x08;
+ if (channel)
+ config |= 0x08;
+ i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
+ config);
+ }
+}
+
+/*
+ * Set conversion rate.
+ * client->update_lock must be held when calling this function (unless we are
+ * in detection or initialization steps).
+ */
+static void lm90_set_convrate(struct i2c_client *client, struct lm90_data *data,
+ unsigned int interval)
+{
+ int i;
+ unsigned int update_interval;
+
+ /* Shift calculations to avoid rounding errors */
+ interval <<= 6;
+
+ /* find the nearest update rate */
+ for (i = 0, update_interval = LM90_MAX_CONVRATE_MS << 6;
+ i < data->max_convrate; i++, update_interval >>= 1)
+ if (interval >= update_interval * 3 / 4)
+ break;
+
+ i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE, i);
+ data->update_interval = DIV_ROUND_CLOSEST(update_interval, 64);
+}
+
+static struct lm90_data *lm90_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm90_data *data = i2c_get_clientdata(client);
+ unsigned long next_update;
+
+ mutex_lock(&data->update_lock);
+
+ next_update = data->last_updated
+ + msecs_to_jiffies(data->update_interval) + 1;
+ if (time_after(jiffies, next_update) || !data->valid) {
+ u8 h, l;
+ u8 alarms;
+
+ dev_dbg(&client->dev, "Updating lm90 data.\n");
+ lm90_read_reg(client, LM90_REG_R_LOCAL_LOW, &data->temp8[0]);
+ lm90_read_reg(client, LM90_REG_R_LOCAL_HIGH, &data->temp8[1]);
+ lm90_read_reg(client, LM90_REG_R_LOCAL_CRIT, &data->temp8[2]);
+ lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[3]);
+ lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst);
+
+ if (data->flags & LM90_HAVE_LOCAL_EXT) {
+ lm90_read16(client, LM90_REG_R_LOCAL_TEMP,
+ MAX6657_REG_R_LOCAL_TEMPL,
+ &data->temp11[4]);
+ } else {
+ if (lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP,
+ &h) == 0)
+ data->temp11[4] = h << 8;
+ }
+ lm90_read16(client, LM90_REG_R_REMOTE_TEMPH,
+ LM90_REG_R_REMOTE_TEMPL, &data->temp11[0]);
+
+ if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h) == 0) {
+ data->temp11[1] = h << 8;
+ if ((data->flags & LM90_HAVE_REM_LIMIT_EXT)
+ && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL,
+ &l) == 0)
+ data->temp11[1] |= l;
+ }
+ if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &h) == 0) {
+ data->temp11[2] = h << 8;
+ if ((data->flags & LM90_HAVE_REM_LIMIT_EXT)
+ && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL,
+ &l) == 0)
+ data->temp11[2] |= l;
+ }
+
+ if (data->flags & LM90_HAVE_OFFSET) {
+ if (lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSH,
+ &h) == 0
+ && lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSL,
+ &l) == 0)
+ data->temp11[3] = (h << 8) | l;
+ }
+ if (data->flags & LM90_HAVE_EMERGENCY) {
+ lm90_read_reg(client, MAX6659_REG_R_LOCAL_EMERG,
+ &data->temp8[4]);
+ lm90_read_reg(client, MAX6659_REG_R_REMOTE_EMERG,
+ &data->temp8[5]);
+ }
+ lm90_read_reg(client, LM90_REG_R_STATUS, &alarms);
+ data->alarms = alarms; /* save as 16 bit value */
+
+ if (data->kind == max6696) {
+ lm90_select_remote_channel(client, data, 1);
+ lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT,
+ &data->temp8[6]);
+ lm90_read_reg(client, MAX6659_REG_R_REMOTE_EMERG,
+ &data->temp8[7]);
+ lm90_read16(client, LM90_REG_R_REMOTE_TEMPH,
+ LM90_REG_R_REMOTE_TEMPL, &data->temp11[5]);
+ if (!lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h))
+ data->temp11[6] = h << 8;
+ if (!lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &h))
+ data->temp11[7] = h << 8;
+ lm90_select_remote_channel(client, data, 0);
+
+ if (!lm90_read_reg(client, MAX6696_REG_R_STATUS2,
+ &alarms))
+ data->alarms |= alarms << 8;
+ }
+
+ /* Re-enable ALERT# output if it was originally enabled and
+ * relevant alarms are all clear */
+ if ((data->config_orig & 0x80) == 0
+ && (data->alarms & data->alert_alarms) == 0) {
+ u8 config;
+
+ lm90_read_reg(client, LM90_REG_R_CONFIG1, &config);
+ if (config & 0x80) {
+ dev_dbg(&client->dev, "Re-enabling ALERT#\n");
+ i2c_smbus_write_byte_data(client,
+ LM90_REG_W_CONFIG1,
+ config & ~0x80);
+ }
+ }
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
/*
* Conversions
* For local temperatures and limits, critical limits and the hysteresis
static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
- static const u8 reg[4] = {
+ static const u8 reg[8] = {
LM90_REG_W_LOCAL_LOW,
LM90_REG_W_LOCAL_HIGH,
LM90_REG_W_LOCAL_CRIT,
LM90_REG_W_REMOTE_CRIT,
+ MAX6659_REG_W_LOCAL_EMERG,
+ MAX6659_REG_W_REMOTE_EMERG,
+ LM90_REG_W_REMOTE_CRIT,
+ MAX6659_REG_W_REMOTE_EMERG,
};
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct lm90_data *data = i2c_get_clientdata(client);
- long val = simple_strtol(buf, NULL, 10);
int nr = attr->index;
+ long val;
+ int err;
+
+ err = strict_strtol(buf, 10, &val);
+ if (err < 0)
+ return err;
/* +16 degrees offset for temp2 for the LM99 */
if (data->kind == lm99 && attr->index == 3)
data->temp8[nr] = temp_to_u8(val);
else
data->temp8[nr] = temp_to_s8(val);
+
+ lm90_select_remote_channel(client, data, nr >= 6);
i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
+ lm90_select_remote_channel(client, data, 0);
+
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
char *buf)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
struct lm90_data *data = lm90_update_device(dev);
int temp;
static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
- static const u8 reg[6] = {
- LM90_REG_W_REMOTE_LOWH,
- LM90_REG_W_REMOTE_LOWL,
- LM90_REG_W_REMOTE_HIGHH,
- LM90_REG_W_REMOTE_HIGHL,
- LM90_REG_W_REMOTE_OFFSH,
- LM90_REG_W_REMOTE_OFFSL,
+ struct {
+ u8 high;
+ u8 low;
+ int channel;
+ } reg[5] = {
+ { LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL, 0 },
+ { LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 0 },
+ { LM90_REG_W_REMOTE_OFFSH, LM90_REG_W_REMOTE_OFFSL, 0 },
+ { LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL, 1 },
+ { LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 1 }
};
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct lm90_data *data = i2c_get_clientdata(client);
- long val = simple_strtol(buf, NULL, 10);
- int nr = attr->index;
+ int nr = attr->nr;
+ int index = attr->index;
+ long val;
+ int err;
+
+ err = strict_strtol(buf, 10, &val);
+ if (err < 0)
+ return err;
/* +16 degrees offset for temp2 for the LM99 */
- if (data->kind == lm99 && attr->index <= 2)
+ if (data->kind == lm99 && index <= 2)
val -= 16000;
mutex_lock(&data->update_lock);
if (data->kind == adt7461)
- data->temp11[nr] = temp_to_u16_adt7461(data, val);
- else if (data->kind == max6657 || data->kind == max6680)
- data->temp11[nr] = temp_to_s8(val) << 8;
+ data->temp11[index] = temp_to_u16_adt7461(data, val);
else if (data->kind == max6646)
- data->temp11[nr] = temp_to_u8(val) << 8;
+ data->temp11[index] = temp_to_u8(val) << 8;
+ else if (data->flags & LM90_HAVE_REM_LIMIT_EXT)
+ data->temp11[index] = temp_to_s16(val);
else
- data->temp11[nr] = temp_to_s16(val);
-
- i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
- data->temp11[nr] >> 8);
- if (data->kind != max6657 && data->kind != max6680
- && data->kind != max6646)
- i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
- data->temp11[nr] & 0xff);
+ data->temp11[index] = temp_to_s8(val) << 8;
+
+ lm90_select_remote_channel(client, data, reg[nr].channel);
+ i2c_smbus_write_byte_data(client, reg[nr].high,
+ data->temp11[index] >> 8);
+ if (data->flags & LM90_HAVE_REM_LIMIT_EXT)
+ i2c_smbus_write_byte_data(client, reg[nr].low,
+ data->temp11[index] & 0xff);
+ lm90_select_remote_channel(client, data, 0);
+
mutex_unlock(&data->update_lock);
return count;
}
-static ssize_t show_temphyst(struct device *dev, struct device_attribute *devattr,
+static ssize_t show_temphyst(struct device *dev,
+ struct device_attribute *devattr,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
{
struct i2c_client *client = to_i2c_client(dev);
struct lm90_data *data = i2c_get_clientdata(client);
- long val = simple_strtol(buf, NULL, 10);
+ long val;
+ int err;
int temp;
+ err = strict_strtol(buf, 10, &val);
+ if (err < 0)
+ return err;
+
mutex_lock(&data->update_lock);
if (data->kind == adt7461)
temp = temp_from_u8_adt7461(data, data->temp8[2]);
return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
}
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 4);
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
+static ssize_t show_update_interval(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct lm90_data *data = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%u\n", data->update_interval);
+}
+
+static ssize_t set_update_interval(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm90_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = strict_strtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ lm90_set_convrate(client, data, val);
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp11, NULL, 0, 4);
+static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp11, NULL, 0, 0);
static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp8,
set_temp8, 0);
-static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
- set_temp11, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 0, 1);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
set_temp8, 1);
-static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
- set_temp11, 2);
+static SENSOR_DEVICE_ATTR_2(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 1, 2);
static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp8,
set_temp8, 2);
static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8,
static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst,
set_temphyst, 2);
static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 3);
-static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
- set_temp11, 3);
+static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 2, 3);
/* Individual alarm files */
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 0);
/* Raw alarm file for compatibility */
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
+ set_update_interval);
+
static struct attribute *lm90_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
&dev_attr_alarms.attr,
+ &dev_attr_update_interval.attr,
NULL
};
.attrs = lm90_attributes,
};
+/*
+ * Additional attributes for devices with emergency sensors
+ */
+static SENSOR_DEVICE_ATTR(temp1_emergency, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 4);
+static SENSOR_DEVICE_ATTR(temp2_emergency, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 5);
+static SENSOR_DEVICE_ATTR(temp1_emergency_hyst, S_IRUGO, show_temphyst,
+ NULL, 4);
+static SENSOR_DEVICE_ATTR(temp2_emergency_hyst, S_IRUGO, show_temphyst,
+ NULL, 5);
+
+static struct attribute *lm90_emergency_attributes[] = {
+ &sensor_dev_attr_temp1_emergency.dev_attr.attr,
+ &sensor_dev_attr_temp2_emergency.dev_attr.attr,
+ &sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp2_emergency_hyst.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm90_emergency_group = {
+ .attrs = lm90_emergency_attributes,
+};
+
+static SENSOR_DEVICE_ATTR(temp1_emergency_alarm, S_IRUGO, show_alarm, NULL, 15);
+static SENSOR_DEVICE_ATTR(temp2_emergency_alarm, S_IRUGO, show_alarm, NULL, 13);
+
+static struct attribute *lm90_emergency_alarm_attributes[] = {
+ &sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm90_emergency_alarm_group = {
+ .attrs = lm90_emergency_alarm_attributes,
+};
+
+/*
+ * Additional attributes for devices with 3 temperature sensors
+ */
+static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp11, NULL, 0, 5);
+static SENSOR_DEVICE_ATTR_2(temp3_min, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 3, 6);
+static SENSOR_DEVICE_ATTR_2(temp3_max, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 4, 7);
+static SENSOR_DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 6);
+static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO, show_temphyst, NULL, 6);
+static SENSOR_DEVICE_ATTR(temp3_emergency, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 7);
+static SENSOR_DEVICE_ATTR(temp3_emergency_hyst, S_IRUGO, show_temphyst,
+ NULL, 7);
+
+static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, show_alarm, NULL, 9);
+static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 10);
+static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO, show_alarm, NULL, 11);
+static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_alarm, NULL, 12);
+static SENSOR_DEVICE_ATTR(temp3_emergency_alarm, S_IRUGO, show_alarm, NULL, 14);
+
+static struct attribute *lm90_temp3_attributes[] = {
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp3_emergency.dev_attr.attr,
+ &sensor_dev_attr_temp3_emergency_hyst.dev_attr.attr,
+
+ &sensor_dev_attr_temp3_fault.dev_attr.attr,
+ &sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_emergency_alarm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm90_temp3_group = {
+ .attrs = lm90_temp3_attributes,
+};
+
/* pec used for ADM1032 only */
static ssize_t show_pec(struct device *dev, struct device_attribute *dummy,
char *buf)
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
- long val = simple_strtol(buf, NULL, 10);
+ long val;
+ int err;
+
+ err = strict_strtol(buf, 10, &val);
+ if (err < 0)
+ return err;
switch (val) {
case 0:
* Real code
*/
-/* The ADM1032 supports PEC but not on write byte transactions, so we need
- to explicitly ask for a transaction without PEC. */
-static inline s32 adm1032_write_byte(struct i2c_client *client, u8 value)
-{
- return i2c_smbus_xfer(client->adapter, client->addr,
- client->flags & ~I2C_CLIENT_PEC,
- I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
-}
-
-/* It is assumed that client->update_lock is held (unless we are in
- detection or initialization steps). This matters when PEC is enabled,
- because we don't want the address pointer to change between the write
- byte and the read byte transactions. */
-static int lm90_read_reg(struct i2c_client* client, u8 reg, u8 *value)
-{
- int err;
-
- if (client->flags & I2C_CLIENT_PEC) {
- err = adm1032_write_byte(client, reg);
- if (err >= 0)
- err = i2c_smbus_read_byte(client);
- } else
- err = i2c_smbus_read_byte_data(client, reg);
-
- if (err < 0) {
- dev_warn(&client->dev, "Register %#02x read failed (%d)\n",
- reg, err);
- return err;
- }
- *value = err;
-
- return 0;
-}
-
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm90_detect(struct i2c_client *new_client,
struct i2c_board_info *info)
}
} else
if (man_id == 0x4D) { /* Maxim */
+ int reg_emerg, reg_emerg2, reg_status2;
+
+ /*
+ * We read MAX6659_REG_R_REMOTE_EMERG twice, and re-read
+ * LM90_REG_R_MAN_ID in between. If MAX6659_REG_R_REMOTE_EMERG
+ * exists, both readings will reflect the same value. Otherwise,
+ * the readings will be different.
+ */
+ if ((reg_emerg = i2c_smbus_read_byte_data(new_client,
+ MAX6659_REG_R_REMOTE_EMERG)) < 0
+ || i2c_smbus_read_byte_data(new_client, LM90_REG_R_MAN_ID) < 0
+ || (reg_emerg2 = i2c_smbus_read_byte_data(new_client,
+ MAX6659_REG_R_REMOTE_EMERG)) < 0
+ || (reg_status2 = i2c_smbus_read_byte_data(new_client,
+ MAX6696_REG_R_STATUS2)) < 0)
+ return -ENODEV;
+
/*
* The MAX6657, MAX6658 and MAX6659 do NOT have a chip_id
* register. Reading from that address will return the last
* register. Likewise, the config1 register seems to lack a
* low nibble, so the value will be those of the previous
* read, so in our case those of the man_id register.
+ * MAX6659 has a third set of upper temperature limit registers.
+ * Those registers also return values on MAX6657 and MAX6658,
+ * thus the only way to detect MAX6659 is by its address.
+ * For this reason it will be mis-detected as MAX6657 if its
+ * address is 0x4C.
*/
if (chip_id == man_id
- && (address == 0x4C || address == 0x4D)
+ && (address == 0x4C || address == 0x4D || address == 0x4E)
&& (reg_config1 & 0x1F) == (man_id & 0x0F)
&& reg_convrate <= 0x09) {
- name = "max6657";
+ if (address == 0x4C)
+ name = "max6657";
+ else
+ name = "max6659";
+ } else
+ /*
+ * Even though MAX6695 and MAX6696 do not have a chip ID
+ * register, reading it returns 0x01. Bit 4 of the config1
+ * register is unused and should return zero when read. Bit 0 of
+ * the status2 register is unused and should return zero when
+ * read.
+ *
+ * MAX6695 and MAX6696 have an additional set of temperature
+ * limit registers. We can detect those chips by checking if
+ * one of those registers exists.
+ */
+ if (chip_id == 0x01
+ && (reg_config1 & 0x10) == 0x00
+ && (reg_status2 & 0x01) == 0x00
+ && reg_emerg == reg_emerg2
+ && reg_convrate <= 0x07) {
+ name = "max6696";
} else
/*
* The chip_id register of the MAX6680 and MAX6681 holds the
} else
if (address == 0x4C
&& man_id == 0x5C) { /* Winbond/Nuvoton */
- if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */
- && (reg_config1 & 0x2A) == 0x00
- && reg_convrate <= 0x08) {
- name = "w83l771";
+ int reg_config2;
+
+ reg_config2 = i2c_smbus_read_byte_data(new_client,
+ LM90_REG_R_CONFIG2);
+ if (reg_config2 < 0)
+ return -ENODEV;
+
+ if ((reg_config1 & 0x2A) == 0x00
+ && (reg_config2 & 0xF8) == 0x00) {
+ if (chip_id == 0x01 /* W83L771W/G */
+ && reg_convrate <= 0x09) {
+ name = "w83l771";
+ } else
+ if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */
+ && reg_convrate <= 0x08) {
+ name = "w83l771";
+ }
}
}
return 0;
}
+static void lm90_remove_files(struct i2c_client *client, struct lm90_data *data)
+{
+ if (data->flags & LM90_HAVE_TEMP3)
+ sysfs_remove_group(&client->dev.kobj, &lm90_temp3_group);
+ if (data->flags & LM90_HAVE_EMERGENCY_ALARM)
+ sysfs_remove_group(&client->dev.kobj,
+ &lm90_emergency_alarm_group);
+ if (data->flags & LM90_HAVE_EMERGENCY)
+ sysfs_remove_group(&client->dev.kobj,
+ &lm90_emergency_group);
+ if (data->flags & LM90_HAVE_OFFSET)
+ device_remove_file(&client->dev,
+ &sensor_dev_attr_temp2_offset.dev_attr);
+ device_remove_file(&client->dev, &dev_attr_pec);
+ sysfs_remove_group(&client->dev.kobj, &lm90_group);
+}
+
+static void lm90_init_client(struct i2c_client *client)
+{
+ u8 config, convrate;
+ struct lm90_data *data = i2c_get_clientdata(client);
+
+ if (lm90_read_reg(client, LM90_REG_R_CONVRATE, &convrate) < 0) {
+ dev_warn(&client->dev, "Failed to read convrate register!\n");
+ convrate = LM90_DEF_CONVRATE_RVAL;
+ }
+ data->convrate_orig = convrate;
+
+ /*
+ * Start the conversions.
+ */
+ lm90_set_convrate(client, data, 500); /* 500ms; 2Hz conversion rate */
+ if (lm90_read_reg(client, LM90_REG_R_CONFIG1, &config) < 0) {
+ dev_warn(&client->dev, "Initialization failed!\n");
+ return;
+ }
+ data->config_orig = config;
+
+ /* Check Temperature Range Select */
+ if (data->kind == adt7461) {
+ if (config & 0x04)
+ data->flags |= LM90_FLAG_ADT7461_EXT;
+ }
+
+ /*
+ * Put MAX6680/MAX8881 into extended resolution (bit 0x10,
+ * 0.125 degree resolution) and range (0x08, extend range
+ * to -64 degree) mode for the remote temperature sensor.
+ */
+ if (data->kind == max6680)
+ config |= 0x18;
+
+ /*
+ * Select external channel 0 for max6695/96
+ */
+ if (data->kind == max6696)
+ config &= ~0x08;
+
+ config &= 0xBF; /* run */
+ if (config != data->config_orig) /* Only write if changed */
+ i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, config);
+}
+
static int lm90_probe(struct i2c_client *new_client,
const struct i2c_device_id *id)
{
/* Different devices have different alarm bits triggering the
* ALERT# output */
- switch (data->kind) {
- case lm90:
- case lm99:
- case lm86:
- data->alert_alarms = 0x7b;
- break;
- default:
- data->alert_alarms = 0x7c;
- break;
- }
+ data->alert_alarms = lm90_params[data->kind].alert_alarms;
+
+ /* Set chip capabilities */
+ data->flags = lm90_params[data->kind].flags;
+
+ /* Set maximum conversion rate */
+ data->max_convrate = lm90_params[data->kind].max_convrate;
/* Initialize the LM90 chip */
lm90_init_client(new_client);
/* Register sysfs hooks */
- if ((err = sysfs_create_group(&new_client->dev.kobj, &lm90_group)))
+ err = sysfs_create_group(&new_client->dev.kobj, &lm90_group);
+ if (err)
goto exit_free;
if (new_client->flags & I2C_CLIENT_PEC) {
- if ((err = device_create_file(&new_client->dev,
- &dev_attr_pec)))
+ err = device_create_file(&new_client->dev, &dev_attr_pec);
+ if (err)
+ goto exit_remove_files;
+ }
+ if (data->flags & LM90_HAVE_OFFSET) {
+ err = device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_offset.dev_attr);
+ if (err)
goto exit_remove_files;
}
- if (data->kind != max6657 && data->kind != max6646) {
- if ((err = device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_offset.dev_attr)))
+ if (data->flags & LM90_HAVE_EMERGENCY) {
+ err = sysfs_create_group(&new_client->dev.kobj,
+ &lm90_emergency_group);
+ if (err)
+ goto exit_remove_files;
+ }
+ if (data->flags & LM90_HAVE_EMERGENCY_ALARM) {
+ err = sysfs_create_group(&new_client->dev.kobj,
+ &lm90_emergency_alarm_group);
+ if (err)
+ goto exit_remove_files;
+ }
+ if (data->flags & LM90_HAVE_TEMP3) {
+ err = sysfs_create_group(&new_client->dev.kobj,
+ &lm90_temp3_group);
+ if (err)
goto exit_remove_files;
}
return 0;
exit_remove_files:
- sysfs_remove_group(&new_client->dev.kobj, &lm90_group);
- device_remove_file(&new_client->dev, &dev_attr_pec);
+ lm90_remove_files(new_client, data);
exit_free:
kfree(data);
exit:
return err;
}
-static void lm90_init_client(struct i2c_client *client)
-{
- u8 config;
- struct lm90_data *data = i2c_get_clientdata(client);
-
- /*
- * Start the conversions.
- */
- i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE,
- 5); /* 2 Hz */
- if (lm90_read_reg(client, LM90_REG_R_CONFIG1, &config) < 0) {
- dev_warn(&client->dev, "Initialization failed!\n");
- return;
- }
- data->config_orig = config;
-
- /* Check Temperature Range Select */
- if (data->kind == adt7461) {
- if (config & 0x04)
- data->flags |= LM90_FLAG_ADT7461_EXT;
- }
-
- /*
- * Put MAX6680/MAX8881 into extended resolution (bit 0x10,
- * 0.125 degree resolution) and range (0x08, extend range
- * to -64 degree) mode for the remote temperature sensor.
- */
- if (data->kind == max6680) {
- config |= 0x18;
- }
-
- config &= 0xBF; /* run */
- if (config != data->config_orig) /* Only write if changed */
- i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, config);
-}
-
static int lm90_remove(struct i2c_client *client)
{
struct lm90_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &lm90_group);
- device_remove_file(&client->dev, &dev_attr_pec);
- if (data->kind != max6657 && data->kind != max6646)
- device_remove_file(&client->dev,
- &sensor_dev_attr_temp2_offset.dev_attr);
+ lm90_remove_files(client, data);
/* Restore initial configuration */
+ i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE,
+ data->convrate_orig);
i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
data->config_orig);
static void lm90_alert(struct i2c_client *client, unsigned int flag)
{
struct lm90_data *data = i2c_get_clientdata(client);
- u8 config, alarms;
+ u8 config, alarms, alarms2 = 0;
lm90_read_reg(client, LM90_REG_R_STATUS, &alarms);
- if ((alarms & 0x7f) == 0) {
+
+ if (data->kind == max6696)
+ lm90_read_reg(client, MAX6696_REG_R_STATUS2, &alarms2);
+
+ if ((alarms & 0x7f) == 0 && (alarms2 & 0xfe) == 0) {
dev_info(&client->dev, "Everything OK\n");
} else {
if (alarms & 0x61)
dev_warn(&client->dev,
"temp%d diode open, please check!\n", 2);
+ if (alarms2 & 0x18)
+ dev_warn(&client->dev,
+ "temp%d out of range, please check!\n", 3);
+
/* Disable ALERT# output, because these chips don't implement
SMBus alert correctly; they should only hold the alert line
low briefly. */
- if ((data->kind == adm1032 || data->kind == adt7461)
+ if ((data->flags & LM90_HAVE_BROKEN_ALERT)
&& (alarms & data->alert_alarms)) {
dev_dbg(&client->dev, "Disabling ALERT#\n");
lm90_read_reg(client, LM90_REG_R_CONFIG1, &config);
}
}
-static int lm90_read16(struct i2c_client *client, u8 regh, u8 regl, u16 *value)
-{
- int err;
- u8 oldh, newh, l;
-
- /*
- * There is a trick here. We have to read two registers to have the
- * sensor temperature, but we have to beware a conversion could occur
- * inbetween the readings. The datasheet says we should either use
- * the one-shot conversion register, which we don't want to do
- * (disables hardware monitoring) or monitor the busy bit, which is
- * impossible (we can't read the values and monitor that bit at the
- * exact same time). So the solution used here is to read the high
- * byte once, then the low byte, then the high byte again. If the new
- * high byte matches the old one, then we have a valid reading. Else
- * we have to read the low byte again, and now we believe we have a
- * correct reading.
- */
- if ((err = lm90_read_reg(client, regh, &oldh))
- || (err = lm90_read_reg(client, regl, &l))
- || (err = lm90_read_reg(client, regh, &newh)))
- return err;
- if (oldh != newh) {
- err = lm90_read_reg(client, regl, &l);
- if (err)
- return err;
- }
- *value = (newh << 8) | l;
-
- return 0;
-}
-
-static struct lm90_data *lm90_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm90_data *data = i2c_get_clientdata(client);
-
- mutex_lock(&data->update_lock);
-
- if (time_after(jiffies, data->last_updated + HZ / 2 + HZ / 10)
- || !data->valid) {
- u8 h, l;
-
- dev_dbg(&client->dev, "Updating lm90 data.\n");
- lm90_read_reg(client, LM90_REG_R_LOCAL_LOW, &data->temp8[0]);
- lm90_read_reg(client, LM90_REG_R_LOCAL_HIGH, &data->temp8[1]);
- lm90_read_reg(client, LM90_REG_R_LOCAL_CRIT, &data->temp8[2]);
- lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[3]);
- lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst);
-
- if (data->kind == max6657 || data->kind == max6646) {
- lm90_read16(client, LM90_REG_R_LOCAL_TEMP,
- MAX6657_REG_R_LOCAL_TEMPL,
- &data->temp11[4]);
- } else {
- if (lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP,
- &h) == 0)
- data->temp11[4] = h << 8;
- }
- lm90_read16(client, LM90_REG_R_REMOTE_TEMPH,
- LM90_REG_R_REMOTE_TEMPL, &data->temp11[0]);
-
- if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h) == 0) {
- data->temp11[1] = h << 8;
- if (data->kind != max6657 && data->kind != max6680
- && data->kind != max6646
- && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL,
- &l) == 0)
- data->temp11[1] |= l;
- }
- if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &h) == 0) {
- data->temp11[2] = h << 8;
- if (data->kind != max6657 && data->kind != max6680
- && data->kind != max6646
- && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL,
- &l) == 0)
- data->temp11[2] |= l;
- }
-
- if (data->kind != max6657 && data->kind != max6646) {
- if (lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSH,
- &h) == 0
- && lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSL,
- &l) == 0)
- data->temp11[3] = (h << 8) | l;
- }
- lm90_read_reg(client, LM90_REG_R_STATUS, &data->alarms);
-
- /* Re-enable ALERT# output if it was originally enabled and
- * relevant alarms are all clear */
- if ((data->config_orig & 0x80) == 0
- && (data->alarms & data->alert_alarms) == 0) {
- u8 config;
-
- lm90_read_reg(client, LM90_REG_R_CONFIG1, &config);
- if (config & 0x80) {
- dev_dbg(&client->dev, "Re-enabling ALERT#\n");
- i2c_smbus_write_byte_data(client,
- LM90_REG_W_CONFIG1,
- config & ~0x80);
- }
- }
-
- data->last_updated = jiffies;
- data->valid = 1;
- }
-
- mutex_unlock(&data->update_lock);
-
- return data;
-}
+static struct i2c_driver lm90_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "lm90",
+ },
+ .probe = lm90_probe,
+ .remove = lm90_remove,
+ .alert = lm90_alert,
+ .id_table = lm90_id,
+ .detect = lm90_detect,
+ .address_list = normal_i2c,
+};
static int __init sensors_lm90_init(void)
{
projects / mv-sheeva.git / blobdiff