diff options
Diffstat (limited to 'dtt/adm1021.c')
| -rw-r--r-- | dtt/adm1021.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/dtt/adm1021.c b/dtt/adm1021.c deleted file mode 100644 index 9f65cfb274..0000000000 --- a/dtt/adm1021.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * (C) Copyright 2003 - * Murray Jensen, CSIRO-MIT, Murray.Jensen@csiro.au - * - * based on dtt/lm75.c which is ... - * - * (C) Copyright 2001 - * Bill Hunter, Wave 7 Optics, williamhunter@mediaone.net - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 - */ - -/* - * Analog Devices's ADM1021 - * "Low Cost Microprocessor System Temperature Monitor" - */ - -#include <common.h> - -#ifdef CONFIG_DTT_ADM1021 - -#include <i2c.h> -#include <dtt.h> - -typedef - struct { - uint i2c_addr:7; /* 7bit i2c chip address */ - uint conv_rate:3; /* conversion rate */ - uint enable_alert:1; /* enable alert output pin */ - uint enable_local:1; /* enable internal temp sensor */ - uint max_local:8; /* internal temp maximum */ - uint min_local:8; /* internal temp minimum */ - uint enable_remote:1; /* enable remote temp sensor */ - uint max_remote:8; /* remote temp maximum */ - uint min_remote:8; /* remote temp minimum */ - } -dtt_cfg_t; - -dtt_cfg_t dttcfg[] = CFG_DTT_ADM1021; - -int -dtt_read (int sensor, int reg) -{ - dtt_cfg_t *dcp = &dttcfg[sensor >> 1]; - uchar data; - - if (i2c_read(dcp->i2c_addr, reg, 1, &data, 1) != 0) - return -1; - - return (int)data; -} /* dtt_read() */ - -int -dtt_write (int sensor, int reg, int val) -{ - dtt_cfg_t *dcp = &dttcfg[sensor >> 1]; - uchar data; - - data = (uchar)(val & 0xff); - - if (i2c_write(dcp->i2c_addr, reg, 1, &data, 1) != 0) - return 1; - - return 0; -} /* dtt_write() */ - -static int -_dtt_init (int sensor) -{ - dtt_cfg_t *dcp = &dttcfg[sensor >> 1]; - int reg, val; - - if (((sensor & 1) == 0 ? dcp->enable_local : dcp->enable_remote) == 0) - return 1; /* sensor is disabled (or rather ignored) */ - - /* - * Setup High Limit register - */ - if ((sensor & 1) == 0) { - reg = DTT_WRITE_LOC_HIGHLIM; - val = dcp->max_local; - } - else { - reg = DTT_WRITE_REM_HIGHLIM; - val = dcp->max_remote; - } - if (dtt_write (sensor, reg, val) != 0) - return 1; - - /* - * Setup Low Limit register - */ - if ((sensor & 1) == 0) { - reg = DTT_WRITE_LOC_LOWLIM; - val = dcp->min_local; - } - else { - reg = DTT_WRITE_REM_LOWLIM; - val = dcp->min_remote; - } - if (dtt_write (sensor, reg, val) != 0) - return 1; - - /* shouldn't hurt if the rest gets done twice */ - - /* - * Setup Conversion Rate register - */ - if (dtt_write (sensor, DTT_WRITE_CONVRATE, dcp->conv_rate) != 0) - return 1; - - /* - * Setup configuraton register - */ - val = 0; /* running */ - if (dcp->enable_alert == 0) - val |= DTT_CONFIG_ALERT_MASKED; /* mask ALERT pin */ - if (dtt_write (sensor, DTT_WRITE_CONFIG, val) != 0) - return 1; - - return 0; -} /* _dtt_init() */ - -int -dtt_init (void) -{ - int i; - unsigned char sensors[] = CONFIG_DTT_SENSORS; - const char *const header = "DTT: "; - - /* switch to correct I2C bus */ - I2C_SET_BUS(CFG_DTT_BUS_NUM); - - for (i = 0; i < sizeof(sensors); i++) { - if (_dtt_init(sensors[i]) != 0) - printf ("%s%d FAILED INIT\n", header, i+1); - else - printf ("%s%d is %i C\n", header, i+1, - dtt_get_temp(sensors[i])); - } - - return (0); -} /* dtt_init() */ - -int -dtt_get_temp (int sensor) -{ - signed char val; - - if ((sensor & 1) == 0) - val = dtt_read(sensor, DTT_READ_LOC_VALUE); - else - val = dtt_read(sensor, DTT_READ_REM_VALUE); - - return (int) val; -} /* dtt_get_temp() */ - -#endif /* CONFIG_DTT_ADM1021 */ |