diff options
Diffstat (limited to 'drivers/hwmon/adm1021.c')
| -rw-r--r-- | drivers/hwmon/adm1021.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/drivers/hwmon/adm1021.c b/drivers/hwmon/adm1021.c deleted file mode 100644 index 99e942b..0000000 --- a/drivers/hwmon/adm1021.c +++ /dev/null @@ -1,164 +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 - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * Analog Devices's ADM1021 - * "Low Cost Microprocessor System Temperature Monitor" - */ - -#include <common.h> - -#include <i2c.h> -#include <dtt.h> - -#define DTT_READ_LOC_VALUE 0x00 -#define DTT_READ_REM_VALUE 0x01 -#define DTT_READ_STATUS 0x02 -#define DTT_READ_CONFIG 0x03 -#define DTT_READ_CONVRATE 0x04 -#define DTT_READ_LOC_HIGHLIM 0x05 -#define DTT_READ_LOC_LOWLIM 0x06 -#define DTT_READ_REM_HIGHLIM 0x07 -#define DTT_READ_REM_LOWLIM 0x08 -#define DTT_READ_DEVID 0xfe - -#define DTT_WRITE_CONFIG 0x09 -#define DTT_WRITE_CONVRATE 0x0a -#define DTT_WRITE_LOC_HIGHLIM 0x0b -#define DTT_WRITE_LOC_LOWLIM 0x0c -#define DTT_WRITE_REM_HIGHLIM 0x0d -#define DTT_WRITE_REM_LOWLIM 0x0e -#define DTT_WRITE_ONESHOT 0x0f - -#define DTT_STATUS_BUSY 0x80 /* 1=ADC Converting */ -#define DTT_STATUS_LHIGH 0x40 /* 1=Local High Temp Limit Tripped */ -#define DTT_STATUS_LLOW 0x20 /* 1=Local Low Temp Limit Tripped */ -#define DTT_STATUS_RHIGH 0x10 /* 1=Remote High Temp Limit Tripped */ -#define DTT_STATUS_RLOW 0x08 /* 1=Remote Low Temp Limit Tripped */ -#define DTT_STATUS_OPEN 0x04 /* 1=Remote Sensor Open-Circuit */ - -#define DTT_CONFIG_ALERT_MASKED 0x80 /* 0=ALERT Enabled, 1=ALERT Masked */ -#define DTT_CONFIG_STANDBY 0x40 /* 0=Run, 1=Standby */ - -#define DTT_ADM1021_DEVID 0x41 - -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[] = CONFIG_SYS_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() */ - -int -dtt_init_one(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_one() */ - -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() */ |