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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2007-11-24 20:14:44 +0100
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2007-11-25 23:28:50 +0100
commitf868cc5a50757d94f36c312395481cb0f187d9e6 (patch)
tree2a1d082ebcaa05ca9f3c2aebc502a19958005605 /dtt/ds1775.c
parent16b195c82a18cbfd164800f17a1ef9db2e48331a (diff)
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drivers/hwmon : move hardware monitor drviers to drivers/hwmon
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'dtt/ds1775.c')
-rw-r--r--dtt/ds1775.c156
1 files changed, 0 insertions, 156 deletions
diff --git a/dtt/ds1775.c b/dtt/ds1775.c
deleted file mode 100644
index e44cee3..0000000
--- a/dtt/ds1775.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/*
- * Dallas Semiconductor's DS1775 Digital Thermometer and Thermostat
- */
-
-#include <common.h>
-
-#ifdef CONFIG_DTT_DS1775
-#include <i2c.h>
-#include <dtt.h>
-
-#define DTT_I2C_DEV_CODE 0x49 /* Dallas Semi's DS1775 device code */
-
-int dtt_read(int sensor, int reg)
-{
- int dlen;
- uchar data[2];
-
- /*
- * Calculate sensor address and command
- */
- sensor = DTT_I2C_DEV_CODE + (sensor & 0x07); /* Calculate addr of ds1775 */
-
- /*
- * Prepare to handle 2 byte result
- */
- if ((reg == DTT_READ_TEMP) ||
- (reg == DTT_TEMP_OS) || (reg == DTT_TEMP_HYST))
- dlen = 2;
- else
- dlen = 1;
-
- /*
- * Now try to read the register
- */
- if (i2c_read(sensor, reg, 1, data, dlen) != 0)
- return 1;
-
- /*
- * Handle 2 byte result
- */
- if (dlen == 2)
- return ((int)((short)data[1] + (((short)data[0]) << 8)));
-
- return (int) data[0];
-}
-
-
-int dtt_write(int sensor, int reg, int val)
-{
- int dlen;
- uchar data[2];
-
- /*
- * Calculate sensor address and register
- */
- sensor = DTT_I2C_DEV_CODE + (sensor & 0x07);
-
- /*
- * Handle various data sizes
- */
- if ((reg == DTT_READ_TEMP) ||
- (reg == DTT_TEMP_OS) || (reg == DTT_TEMP_HYST)) {
- dlen = 2;
- data[0] = (char)((val >> 8) & 0xff); /* MSB first */
- data[1] = (char)(val & 0xff);
- } else {
- dlen = 1;
- data[0] = (char)(val & 0xff);
- }
-
- /*
- * Write value to device
- */
- if (i2c_write(sensor, reg, 1, data, dlen) != 0)
- return 1;
-
- return 0;
-}
-
-
-static int _dtt_init(int sensor)
-{
- int val;
-
- /*
- * Setup High Temp
- */
- val = ((CFG_DTT_MAX_TEMP * 2) << 7) & 0xff80;
- if (dtt_write(sensor, DTT_TEMP_OS, val) != 0)
- return 1;
- udelay(50000); /* Max 50ms */
-
- /*
- * Setup Low Temp - hysteresis
- */
- val = (((CFG_DTT_MAX_TEMP - CFG_DTT_HYSTERESIS) * 2) << 7) & 0xff80;
- if (dtt_write(sensor, DTT_TEMP_HYST, val) != 0)
- return 1;
- udelay(50000); /* Max 50ms */
-
- /*
- * Setup configuraton register
- *
- * Fault Tolerance limits 4, Thermometer resolution bits is 9,
- * Polarity = Active Low,continuous conversion mode, Thermostat
- * mode is interrupt mode
- */
- val = 0xa;
- if (dtt_write(sensor, DTT_CONFIG, val) != 0)
- return 1;
- udelay(50000); /* Max 50ms */
-
- return 0;
-}
-
-
-int dtt_init (void)
-{
- int i;
- unsigned char sensors[] = CONFIG_DTT_SENSORS;
-
- for (i = 0; i < sizeof(sensors); i++) {
- if (_dtt_init(sensors[i]) != 0)
- printf("DTT%d: FAILED\n", i+1);
- else
- printf("DTT%d: %i C\n", i+1, dtt_get_temp(sensors[i]));
- }
-
- return (0);
-}
-
-
-int dtt_get_temp(int sensor)
-{
- return (dtt_read(sensor, DTT_READ_TEMP) / 256);
-}
-
-
-#endif /* CONFIG_DTT_DS1775 */