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Diffstat (limited to 'drivers/hwmon/ds1775.c')
-rw-r--r--drivers/hwmon/ds1775.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/drivers/hwmon/ds1775.c b/drivers/hwmon/ds1775.c
deleted file mode 100644
index 4c0c0b8..0000000
--- a/drivers/hwmon/ds1775.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * Dallas Semiconductor's DS1775 Digital Thermometer and Thermostat
- */
-
-#include <common.h>
-
-#include <i2c.h>
-#include <dtt.h>
-
-#define DTT_I2C_DEV_CODE 0x48 /* Dallas Semi's DS1775 device code */
-#define DTT_READ_TEMP 0x0
-#define DTT_CONFIG 0x1
-#define DTT_TEMP_HYST 0x2
-#define DTT_TEMP_OS 0x3
-
-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;
-}
-
-
-int dtt_init_one(int sensor)
-{
- int val;
-
- /*
- * Setup High Temp
- */
- val = ((CONFIG_SYS_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 = (((CONFIG_SYS_DTT_MAX_TEMP - CONFIG_SYS_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_get_temp(int sensor)
-{
- return (dtt_read(sensor, DTT_READ_TEMP) / 256);
-}