diff options
Diffstat (limited to 'dtt')
| -rw-r--r-- | dtt/Makefile | 55 | ||||
| -rw-r--r-- | dtt/adm1021.c | 174 | ||||
| -rw-r--r-- | dtt/ds1621.c | 190 | ||||
| -rw-r--r-- | dtt/ds1775.c | 156 | ||||
| -rw-r--r-- | dtt/lm75.c | 185 | ||||
| -rw-r--r-- | dtt/lm81.c | 148 |
6 files changed, 0 insertions, 908 deletions
diff --git a/dtt/Makefile b/dtt/Makefile deleted file mode 100644 index 72e5c88..0000000 --- a/dtt/Makefile +++ /dev/null @@ -1,55 +0,0 @@ -# -# (C) Copyright 2006 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# (C) Copyright 2001 -# Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. -# -# 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 -# - -include $(TOPDIR)/config.mk - -#CFLAGS += -DDEBUG - -LIB = $(obj)libdtt.a - -COBJS-y += lm75.o -COBJS-y += ds1621.o -COBJS-y += adm1021.o -COBJS-y += lm81.o -COBJS-y += ds1775.o - -COBJS := $(COBJS-y) -SRCS := $(COBJS:.o=.c) -OBJS := $(addprefix $(obj),$(COBJS)) - -all: $(LIB) - -$(LIB): $(obj).depend $(OBJS) - $(AR) $(ARFLAGS) $@ $(OBJS) - -######################################################################### - -# defines $(obj).depend target -include $(SRCTREE)/rules.mk - -sinclude $(obj).depend - -######################################################################### diff --git a/dtt/adm1021.c b/dtt/adm1021.c deleted file mode 100644 index 9f65cfb..0000000 --- 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 */ diff --git a/dtt/ds1621.c b/dtt/ds1621.c deleted file mode 100644 index 4948181..0000000 --- a/dtt/ds1621.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * (C) Copyright 2001 - * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. - * - * 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 - */ - -/* - * Dallas Semiconductor's DS1621 Digital Thermometer and Thermostat. - */ - -#include <common.h> - -#ifdef CONFIG_DTT_DS1621 -#if !defined(CFG_EEPROM_PAGE_WRITE_ENABLE) || \ - (CFG_EEPROM_PAGE_WRITE_BITS < 1) -# error "CFG_EEPROM_PAGE_WRITE_ENABLE must be defined and CFG_EEPROM_PAGE_WRITE_BITS must be greater than 1 to use CONFIG_DTT_DS1621" -#endif -#include <i2c.h> -#include <dtt.h> - -/* - * Device code - */ -#define DTT_I2C_DEV_CODE 0x48 /* Dallas Semi's DS1621 */ - -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 ds1621*/ - - /* - * Prepare to handle 2 byte result. - */ - if ((reg == DTT_READ_TEMP) || - (reg == DTT_TEMP_HIGH) || (reg == DTT_TEMP_LOW)) - 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]; -} /* dtt_read() */ - - -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_HIGH) || (reg == DTT_TEMP_LOW)) { - dlen = 2; - data[0] = (char)((val >> 8) & 0xff); /* MSB first */ - data[1] = (char)(val & 0xff); - } - else if ((reg == DTT_WRITE_START_CONV) || (reg == DTT_WRITE_STOP_CONV)) { - dlen = 0; - data[0] = (char)0; - data[1] = (char)0; - } - 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; -} /* dtt_write() */ - - -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_HIGH, 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_LOW, val) != 0) - return 1; - udelay(50000); /* Max 50ms */ - - /* - * Setup configuraton register - * - * Clear THF & TLF, Reserved = 1, Polarity = Active Low, One Shot = YES - * - * We run in polled mode, since there isn't any way to know if this - * lousy device is ready to provide temperature readings on power up. - */ - val = 0x9; - if (dtt_write(sensor, DTT_CONFIG, val) != 0) - return 1; - udelay(50000); /* Max 50ms */ - - return 0; -} /* _dtt_init() */ - - -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); -} /* dtt_init() */ - - -int dtt_get_temp(int sensor) -{ - int i; - - /* - * Start a conversion, may take up to 1 second. - */ - dtt_write(sensor, DTT_WRITE_START_CONV, 0); - for (i = 0; i <= 10; i++) { - udelay(100000); - if (dtt_read(sensor, DTT_CONFIG) & 0x80) - break; - } - - return (dtt_read(sensor, DTT_READ_TEMP) / 256); -} /* dtt_get_temp() */ - - -#endif /* CONFIG_DTT_DS1621 */ 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 */ diff --git a/dtt/lm75.c b/dtt/lm75.c deleted file mode 100644 index 63f3b75..0000000 --- a/dtt/lm75.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * (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 - */ - -/* - * On Semiconductor's LM75 Temperature Sensor - */ - -#include <common.h> - -#ifdef CONFIG_DTT_LM75 -#if !defined(CFG_EEPROM_PAGE_WRITE_ENABLE) || \ - (CFG_EEPROM_PAGE_WRITE_BITS < 1) -# error "CFG_EEPROM_PAGE_WRITE_ENABLE must be defined and CFG_EEPROM_PAGE_WRITE_BITS must be greater than 1 to use CONFIG_DTT_LM75" -#endif - -#include <i2c.h> -#include <dtt.h> - - -/* - * Device code - */ -#define DTT_I2C_DEV_CODE 0x48 /* ON Semi's LM75 device */ - -int dtt_read(int sensor, int reg) -{ - int dlen; - uchar data[2]; - - /* - * Validate 'reg' param - */ - if((reg < 0) || (reg > 3)) - return -1; - - /* - * Calculate sensor address and register. - */ - sensor = DTT_I2C_DEV_CODE + (sensor & 0x07); /* calculate address of lm75 */ - - /* - * Prepare to handle 2 byte result. - */ - if ((reg == DTT_READ_TEMP) || - (reg == DTT_TEMP_HYST) || - (reg == DTT_TEMP_SET)) - 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]; -} /* dtt_read() */ - - -int dtt_write(int sensor, int reg, int val) -{ - int dlen; - uchar data[2]; - - /* - * Validate 'reg' param - */ - if ((reg < 0) || (reg > 3)) - return 1; - - /* - * Calculate sensor address and register. - */ - sensor = DTT_I2C_DEV_CODE + (sensor & 0x07); /* calculate address of lm75 */ - - /* - * Handle 2 byte values. - */ - if ((reg == DTT_READ_TEMP) || - (reg == DTT_TEMP_HYST) || - (reg == DTT_TEMP_SET)) { - 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 register. - */ - if (i2c_write(sensor, reg, 1, data, dlen) != 0) - return 1; - - return 0; -} /* dtt_write() */ - - -static int _dtt_init(int sensor) -{ - int val; - - /* - * Setup TSET ( trip point ) register - */ - val = ((CFG_DTT_MAX_TEMP * 2) << 7) & 0xff80; /* trip */ - if (dtt_write(sensor, DTT_TEMP_SET, val) != 0) - return 1; - - /* - * Setup THYST ( untrip point ) register - Hysteresis - */ - val = (((CFG_DTT_MAX_TEMP - CFG_DTT_HYSTERESIS) * 2) << 7) & 0xff80; - if (dtt_write(sensor, DTT_TEMP_HYST, val) != 0) - return 1; - - /* - * Setup configuraton register - */ -#ifdef CONFIG_DTT_AD7414 - /* config = alert active low and disabled */ - val = 0x60; -#else - /* config = 6 sample integration, int mode, active low, and enable */ - val = 0x18; -#endif - if (dtt_write(sensor, DTT_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: "; - - 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) -{ - return (dtt_read(sensor, DTT_READ_TEMP) / 256); -} /* dtt_get_temp() */ - -#endif /* CONFIG_DTT_LM75 */ diff --git a/dtt/lm81.c b/dtt/lm81.c deleted file mode 100644 index 03bc53d..0000000 --- a/dtt/lm81.c +++ /dev/null @@ -1,148 +0,0 @@ -/* - * (C) Copyright 2006 - * Heiko Schocher, DENX Software Enginnering <hs@denx.de> - * - * 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 - */ - -/* - * On Semiconductor's LM81 Temperature Sensor - */ - -#include <common.h> - -#ifdef CONFIG_DTT_LM81 -#if !defined(CFG_EEPROM_PAGE_WRITE_ENABLE) || \ - (CFG_EEPROM_PAGE_WRITE_BITS < 1) -# error "CFG_EEPROM_PAGE_WRITE_ENABLE must be defined and CFG_EEPROM_PAGE_WRITE_BITS must be greater than 1 to use CONFIG_DTT_LM81" -#endif - -#include <i2c.h> -#include <dtt.h> - -/* - * Device code - */ -#define DTT_I2C_DEV_CODE 0x2c /* ON Semi's LM81 device */ - -int dtt_read(int sensor, int reg) -{ - int dlen = 1; - uchar data[2]; - - /* - * Calculate sensor address and register. - */ - sensor = DTT_I2C_DEV_CODE + (sensor & 0x03); /* calculate address of lm81 */ - - /* - * Now try to read the register. - */ - if (i2c_read(sensor, reg, 1, data, dlen) != 0) - return -1; - - return (int)data[0]; -} /* dtt_read() */ - - -int dtt_write(int sensor, int reg, int val) -{ - uchar data; - - /* - * Calculate sensor address and register. - */ - sensor = DTT_I2C_DEV_CODE + (sensor & 0x03); /* calculate address of lm81 */ - - data = (char)(val & 0xff); - - /* - * Write value to register. - */ - if (i2c_write(sensor, reg, 1, &data, 1) != 0) - return 1; - - return 0; -} /* dtt_write() */ - -#define DTT_MANU 0x3e -#define DTT_REV 0x3f -#define DTT_CONFIG 0x40 -#define DTT_ADR 0x48 - -static int _dtt_init(int sensor) -{ - int man; - int adr; - int rev; - - if (dtt_write (sensor, DTT_CONFIG, 0x01) < 0) - return 1; - /* The LM81 needs 400ms to get the correct values ... */ - udelay (400000); - man = dtt_read (sensor, DTT_MANU); - if (man != 0x01) - return 1; - adr = dtt_read (sensor, DTT_ADR); - if (adr < 0) - return 1; - rev = dtt_read (sensor, DTT_REV); - if (adr < 0) - return 1; - - printf ("DTT: Found LM81@%x Rev: %d\n", adr, rev); - return 0; -} /* _dtt_init() */ - - -int dtt_init (void) -{ - int i; - unsigned char sensors[] = CONFIG_DTT_SENSORS; - const char *const header = "DTT: "; - - 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() */ - -#define TEMP_FROM_REG(temp) \ - ((temp)<256?((((temp)&0x1fe) >> 1) * 10) + ((temp) & 1) * 5: \ - ((((temp)&0x1fe) >> 1) -255) * 10 - ((temp) & 1) * 5) \ - -int dtt_get_temp(int sensor) -{ - int val = dtt_read (sensor, DTT_READ_TEMP); - int tmpcnf = dtt_read (sensor, DTT_CONFIG_TEMP); - - return (TEMP_FROM_REG((val << 1) + ((tmpcnf & 0x80) >> 7))) / 10; -} /* dtt_get_temp() */ - -#endif /* CONFIG_DTT_LM81 */ |