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Support MAX6633, MAX6634, MAX6635 and LM76.

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2440 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare
2004-04-14 18:29:24 +00:00
parent 8756685f86
commit c7a33c464f
3 changed files with 59 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
doc/chips/SUMMARY
View File

@@ -135,7 +135,13 @@ lm90
adm1032 2 - - - yes no
lm92
(all are reported as an "lm92")
lm92 1 - - - yes no
max6633 1 - - - yes no
max6634 1 - - - yes no
max6635 1 - - - yes no
(lm76 needs force parameter)
lm76 1 - - - yes no
maxilife
maxilife-as 5 4 3 - yes no

11
doc/chips/lm92
View File

@@ -7,6 +7,13 @@ Supported chips:
* National Semiconductors LM92
Prefix `lm92'
Addresses scanned: I2C 0x48 - 0x4b (inclusive)
* National Semiconductors LM76
Prefix `lm92'
Addresses scanned: none, force parameter needed
* Maxim MAX6633/MAX6634/MAX6635
Prefix `lm92'
Addresses scanned: I2C 0x48 - 0x4f (inclusive)
MAX6633 with address in 0x40 - 0x47 needs force parameter
Author: Abraham van der Merwe <abraham@2d3d.co.za>
@@ -46,6 +53,10 @@ control the thresholds for resetting alarms.
At the moment the driver controls these sensors in comparator mode and the
interrupt pins (INT, T_CRIT_A) are ignored.
Support was added later for the LM76 and Maxim MAX6633/MAX6634/MAX6635,
which are mostly compatible. They have not all been tested, so you
may need to use the force parameter.
Hardware Configurations
-----------------------

48
kernel/chips/lm92.c
View File

@@ -107,7 +107,7 @@ static DECLARE_MUTEX (mutex);
/* addresses to scan */
static unsigned short normal_i2c[] = { SENSORS_I2C_END };
static unsigned short normal_i2c_range[] = { 0x48, 0x4b, SENSORS_I2C_END };
static unsigned short normal_i2c_range[] = { 0x48, 0x4f, SENSORS_I2C_END };
static unsigned int normal_isa[] = { SENSORS_ISA_END };
static unsigned int normal_isa_range[] = { SENSORS_ISA_END };
@@ -231,6 +231,35 @@ static void lm92_alarms (struct i2c_client *client,int operation,int ctl_name,in
}
}
static int max6635_check(struct i2c_client *client)
{
int i;
u16 temp_low, temp_high, temp_hyst, temp_crit;
u8 conf;
temp_low = i2c_smbus_read_word_data(client, LM92_REG_TRIP_LOW);
temp_high = i2c_smbus_read_word_data(client, LM92_REG_TRIP_HIGH);
temp_hyst = i2c_smbus_read_word_data(client, LM92_REG_TRIP_HYSTERESIS);
temp_crit = i2c_smbus_read_word_data(client, LM92_REG_TRIP_CRITICAL);
if ((temp_low & 0x7f00) || (temp_high & 0x7f00)
|| (temp_hyst & 0x7f00) || (temp_crit & 0x7f00))
return 0;
conf = i2c_smbus_read_byte_data(client, LM92_REG_CONFIGURATION);
for (i=0; i<128; i+=16) {
if (temp_low != i2c_smbus_read_word_data(client, LM92_REG_TRIP_LOW + i)
|| temp_high != i2c_smbus_read_word_data(client, LM92_REG_TRIP_HIGH + i)
|| temp_hyst != i2c_smbus_read_word_data(client, LM92_REG_TRIP_HYSTERESIS + i)
|| temp_crit != i2c_smbus_read_word_data(client, LM92_REG_TRIP_CRITICAL + i)
|| conf != i2c_smbus_read_byte_data(client, LM92_REG_CONFIGURATION + i))
return 0;
}
return 1;
}
static int lm92_init_client (struct i2c_client *client)
{
lm92_t *data = (lm92_t *) client->data;
@@ -294,11 +323,18 @@ static int lm92_detect (struct i2c_adapter *adapter,int address,unsigned short f
return (-ERESTARTSYS);
}
if ((kind < 0 && lm92_read16 (client,LM92_REG_MANUFACTURER,&manufacturer) < 0) ||
manufacturer != LM92_MANUFACTURER_ID) {
kfree (client);
up (&mutex);
return (-ENODEV);
if (kind < 0) {
/* Is it an lm92? */
if (address < 0x4c
&& (lm92_read16(client,LM92_REG_MANUFACTURER,&manufacturer) < 0
|| manufacturer != LM92_MANUFACTURER_ID)) {
/* Is it a MAX6635/MAX6635/MAX6635? */
if (!max6635_check(client)) {
kfree (client);
up (&mutex);
return (-ENODEV);
}
}
}
if ((result = i2c_attach_client (client))) {