These Maxim chips are similar to MAX6657 but use unsigned temperature
values to allow for readings up to 145 degrees.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Addresses scanned: I2C 0x4c and 0x4d
Datasheet: Publicly available at the ON Semiconductor website
http://www.onsemi.com/PowerSolutions/product.do?id=ADT7461
Addresses scanned: I2C 0x4c and 0x4d
Datasheet: Publicly available at the ON Semiconductor website
http://www.onsemi.com/PowerSolutions/product.do?id=ADT7461
+ * Maxim MAX6646
+ Prefix: 'max6646'
+ Addresses scanned: I2C 0x4d
+ Datasheet: Publicly available at the Maxim website
+ http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3497
+ * Maxim MAX6647
+ Prefix: 'max6646'
+ Addresses scanned: I2C 0x4e
+ Datasheet: Publicly available at the Maxim website
+ http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3497
+ * Maxim MAX6649
+ Prefix: 'max6646'
+ Addresses scanned: I2C 0x4c
+ Datasheet: Publicly available at the Maxim website
+ http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3497
* Maxim MAX6657
Prefix: 'max6657'
Addresses scanned: I2C 0x4c
* Maxim MAX6657
Prefix: 'max6657'
Addresses scanned: I2C 0x4c
help
If you say yes here you get support for National Semiconductor LM90,
LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, and Maxim
help
If you say yes here you get support for National Semiconductor LM90,
LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, and Maxim
- MAX6657, MAX6658, MAX6659, MAX6680 and MAX6681 sensor chips.
+ MAX6646, MAX6647, MAX6649, MAX6657, MAX6658, MAX6659, MAX6680 and
+ MAX6681 sensor chips.
This driver can also be built as a module. If so, the module
will be called lm90.
This driver can also be built as a module. If so, the module
will be called lm90.
* supported by this driver. These chips lack the remote temperature
* offset feature.
*
* supported by this driver. These chips lack the remote temperature
* offset feature.
*
+ * This driver also supports the MAX6646, MAX6647 and MAX6649 chips
+ * made by Maxim. These are again similar to the LM86, but they use
+ * unsigned temperature values and can report temperatures from 0 to
+ * 145 degrees.
+ *
* This driver also supports the MAX6680 and MAX6681, two other sensor
* chips made by Maxim. These are quite similar to the other Maxim
* chips. The MAX6680 and MAX6681 only differ in the pinout so they can
* This driver also supports the MAX6680 and MAX6681, two other sensor
* chips made by Maxim. These are quite similar to the other Maxim
* chips. The MAX6680 and MAX6681 only differ in the pinout so they can
* Addresses to scan
* Address is fully defined internally and cannot be changed except for
* MAX6659, MAX6680 and MAX6681.
* 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, MAX6657 and MAX6658
- * have address 0x4c.
- * ADM1032-2, ADT7461-2, LM89-1, and LM99-1 have address 0x4d.
+ * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657
+ * and MAX6658 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).
* MAX6680 and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b,
* 0x4c, 0x4d or 0x4e.
* MAX6659 can have address 0x4c, 0x4d or 0x4e (unsupported).
* MAX6680 and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b,
* 0x4c, 0x4d or 0x4e.
-I2C_CLIENT_INSMOD_7(lm90, adm1032, lm99, lm86, max6657, adt7461, max6680);
+I2C_CLIENT_INSMOD_8(lm90, adm1032, lm99, lm86, max6657, adt7461, max6680,
+ max6646);
#define LM90_REG_R_TCRIT_HYST 0x21
#define LM90_REG_W_TCRIT_HYST 0x21
#define LM90_REG_R_TCRIT_HYST 0x21
#define LM90_REG_W_TCRIT_HYST 0x21
-/* MAX6657-specific registers */
+/* MAX6646/6647/6649/6657/6658/6659 registers */
#define MAX6657_REG_R_LOCAL_TEMPL 0x11
#define MAX6657_REG_R_LOCAL_TEMPL 0x11
{ "lm86", lm86 },
{ "lm89", lm99 },
{ "lm99", lm99 }, /* Missing temperature offset */
{ "lm86", lm86 },
{ "lm89", lm99 },
{ "lm99", lm99 }, /* Missing temperature offset */
+ { "max6646", max6646 },
+ { "max6647", max6646 },
+ { "max6649", max6646 },
{ "max6657", max6657 },
{ "max6658", max6657 },
{ "max6659", max6657 },
{ "max6657", max6657 },
{ "max6658", max6657 },
{ "max6659", max6657 },
s16 temp11[5]; /* 0: remote input
1: remote low limit
2: remote high limit
s16 temp11[5]; /* 0: remote input
1: remote low limit
2: remote high limit
- 3: remote offset (except max6657)
+ 3: remote offset (except max6646 and max6657)
4: local input */
u8 temp_hyst;
u8 alarms; /* bitvector */
4: local input */
u8 temp_hyst;
u8 alarms; /* bitvector */
* For local temperatures and limits, critical limits and the hysteresis
* value, the LM90 uses signed 8-bit values with LSB = 1 degree Celsius.
* For remote temperatures and limits, it uses signed 11-bit values with
* For local temperatures and limits, critical limits and the hysteresis
* value, the LM90 uses signed 8-bit values with LSB = 1 degree Celsius.
* For remote temperatures and limits, it uses signed 11-bit values with
- * LSB = 0.125 degree Celsius, left-justified in 16-bit registers.
+ * LSB = 0.125 degree Celsius, left-justified in 16-bit registers. Some
+ * Maxim chips use unsigned values.
*/
static inline int temp_from_s8(s8 val)
*/
static inline int temp_from_s8(s8 val)
+static inline int temp_from_u8(u8 val)
+{
+ return val * 1000;
+}
+
static inline int temp_from_s16(s16 val)
{
return val / 32 * 125;
}
static inline int temp_from_s16(s16 val)
{
return val / 32 * 125;
}
+static inline int temp_from_u16(u16 val)
+{
+ return val / 32 * 125;
+}
+
static s8 temp_to_s8(long val)
{
if (val <= -128000)
static s8 temp_to_s8(long val)
{
if (val <= -128000)
return (val + 500) / 1000;
}
return (val + 500) / 1000;
}
+static u8 temp_to_u8(long val)
+{
+ if (val <= 0)
+ return 0;
+ if (val >= 255000)
+ return 255;
+ return (val + 500) / 1000;
+}
+
static s16 temp_to_s16(long val)
{
if (val <= -128000)
static s16 temp_to_s16(long val)
{
if (val <= -128000)
if (data->kind == adt7461)
temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
if (data->kind == adt7461)
temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
+ else if (data->kind == max6646)
+ temp = temp_from_u8(data->temp8[attr->index]);
else
temp = temp_from_s8(data->temp8[attr->index]);
else
temp = temp_from_s8(data->temp8[attr->index]);
mutex_lock(&data->update_lock);
if (data->kind == adt7461)
data->temp8[nr] = temp_to_u8_adt7461(data, val);
mutex_lock(&data->update_lock);
if (data->kind == adt7461)
data->temp8[nr] = temp_to_u8_adt7461(data, val);
+ else if (data->kind == max6646)
+ data->temp8[nr] = temp_to_u8(val);
else
data->temp8[nr] = temp_to_s8(val);
i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
else
data->temp8[nr] = temp_to_s8(val);
i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
if (data->kind == adt7461)
temp = temp_from_u16_adt7461(data, data->temp11[attr->index]);
if (data->kind == adt7461)
temp = temp_from_u16_adt7461(data, data->temp11[attr->index]);
+ else if (data->kind == max6646)
+ temp = temp_from_u16(data->temp11[attr->index]);
else
temp = temp_from_s16(data->temp11[attr->index]);
else
temp = temp_from_s16(data->temp11[attr->index]);
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[nr] = temp_to_u16_adt7461(data, val);
else if (data->kind == max6657 || data->kind == max6680)
data->temp11[nr] = temp_to_s8(val) << 8;
+ else if (data->kind == max6646)
+ data->temp11[nr] = temp_to_u8(val) << 8;
else
data->temp11[nr] = temp_to_s16(val);
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
data->temp11[nr] >> 8);
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)
+ 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);
mutex_unlock(&data->update_lock);
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
data->temp11[nr] & 0xff);
mutex_unlock(&data->update_lock);
&& (reg_config1 & 0x03) == 0x00
&& reg_convrate <= 0x07) {
kind = max6680;
&& (reg_config1 & 0x03) == 0x00
&& reg_convrate <= 0x07) {
kind = max6680;
+ } else
+ /* The chip_id register of the MAX6646/6647/6649
+ * holds the revision of the chip.
+ * The lowest 6 bits of the config1 register are
+ * unused and should return zero when read.
+ */
+ if (chip_id == 0x59
+ && (reg_config1 & 0x3f) == 0x00
+ && reg_convrate <= 0x07) {
+ kind = max6646;
name = "max6680";
} else if (kind == adt7461) {
name = "adt7461";
name = "max6680";
} else if (kind == adt7461) {
name = "adt7461";
+ } else if (kind == max6646) {
+ name = "max6646";
}
strlcpy(info->type, name, I2C_NAME_SIZE);
}
strlcpy(info->type, name, I2C_NAME_SIZE);
&dev_attr_pec)))
goto exit_remove_files;
}
&dev_attr_pec)))
goto exit_remove_files;
}
- if (data->kind != max6657) {
+ if (data->kind != max6657 && data->kind != max6646) {
if ((err = device_create_file(&new_client->dev,
&sensor_dev_attr_temp2_offset.dev_attr)))
goto exit_remove_files;
if ((err = device_create_file(&new_client->dev,
&sensor_dev_attr_temp2_offset.dev_attr)))
goto exit_remove_files;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &lm90_group);
device_remove_file(&client->dev, &dev_attr_pec);
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)
+ if (data->kind != max6657 && data->kind != max6646)
device_remove_file(&client->dev,
&sensor_dev_attr_temp2_offset.dev_attr);
device_remove_file(&client->dev,
&sensor_dev_attr_temp2_offset.dev_attr);
lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[3]);
lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst);
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) {
+ if (data->kind == max6657 || data->kind == max6646) {
lm90_read16(client, LM90_REG_R_LOCAL_TEMP,
MAX6657_REG_R_LOCAL_TEMPL,
&data->temp11[4]);
lm90_read16(client, LM90_REG_R_LOCAL_TEMP,
MAX6657_REG_R_LOCAL_TEMPL,
&data->temp11[4]);
if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &h) == 0) {
data->temp11[1] = h << 8;
if (data->kind != max6657 && data->kind != max6680
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;
&& 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
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;
}
&& lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL,
&l) == 0)
data->temp11[2] |= l;
}
- if (data->kind != max6657) {
+ 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,
if (lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSH,
&h) == 0
&& lm90_read_reg(client, LM90_REG_R_REMOTE_OFFSL,