Add support for ADT7460 I2C monitor chip

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@uam.es>
This commit is contained in:
Ricardo Ribalda Delgado 2008-07-23 19:10:14 +02:00 committed by Wolfgang Denk
parent eb59ea45ab
commit d0039d4ed2
3 changed files with 86 additions and 1 deletions

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@ -37,6 +37,7 @@ COBJS-$(CONFIG_DTT_DS1775) += ds1775.o
COBJS-$(CONFIG_DTT_LM73) += lm73.o
COBJS-$(CONFIG_DTT_LM75) += lm75.o
COBJS-$(CONFIG_DTT_LM81) += lm81.o
COBJS-$(CONFIG_DTT_ADT7460) += adt7460.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)

83
drivers/hwmon/adt7460.c Normal file
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@ -0,0 +1,83 @@
/*
* (C) Copyright 2008
* Ricado Ribalda-Universidad Autonoma de Madrid, ricardo.ribalda@uam.es
* This work has been supported by: QTechnology http://qtec.com/
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <i2c.h>
#include <dtt.h>
#define ADT7460_ADDRESS 0x2c
#define ADT7460_INVALID 128
#define ADT7460_CONFIG 0x40
#define ADT7460_REM1_TEMP 0x25
#define ADT7460_LOCAL_TEMP 0x26
#define ADT7460_REM2_TEMP 0x27
int dtt_read(int sensor, int reg)
{
u8 dir = reg;
u8 data;
if (i2c_read(ADT7460_ADDRESS, dir, 1, &data, 1) == -1)
return -1;
if (data == ADT7460_INVALID)
return -1;
return data;
}
int dtt_write(int sensor, int reg, int val)
{
u8 dir = reg;
u8 data = val;
if (i2c_write(ADT7460_ADDRESS, dir, 1, &data, 1) == -1)
return -1;
return 0;
}
int dtt_init(void)
{
printf("ADT7460 at I2C address 0x%2x\n", ADT7460_ADDRESS);
if (dtt_write(0, ADT7460_CONFIG, 1) == -1) {
puts("Error initialiting ADT7460\n");
return -1;
}
return 0;
}
int dtt_get_temp(int sensor)
{
int aux;
u8 table[] =
{ ADT7460_REM1_TEMP, ADT7460_LOCAL_TEMP, ADT7460_REM2_TEMP };
if (sensor > 2) {
puts("DTT sensor does not exist\n");
return -1;
}
aux = dtt_read(0, table[sensor]);
if (aux == -1) {
puts("DTT temperature read failed\n");
return -1;
}
return aux;
}

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@ -32,7 +32,8 @@
defined(CONFIG_DTT_DS1775) || \
defined(CONFIG_DTT_LM81) || \
defined(CONFIG_DTT_ADM1021) || \
defined(CONFIG_DTT_LM73)
defined(CONFIG_DTT_LM73) || \
defined(CONFIG_DTT_ADT7460)
#define CONFIG_DTT /* We have a DTT */