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Diffstat (limited to 'drivers/hwmon/lm63.c')
-rw-r--r--drivers/hwmon/lm63.c160
1 files changed, 0 insertions, 160 deletions
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c
deleted file mode 100644
index 053c785fc56..00000000000
--- a/drivers/hwmon/lm63.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * (C) Copyright 2007-2008
- * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
- * based on lm75.c by Bill Hunter
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * National LM63/LM64 Temperature Sensor
- * Main difference: LM 64 has -16 Kelvin temperature offset
- */
-
-#include <common.h>
-#include <i2c.h>
-#include <dtt.h>
-
-#define DTT_I2C_LM63_ADDR 0x4C /* National LM63 device */
-
-#define DTT_READ_TEMP_RMT_MSB 0x01
-#define DTT_CONFIG 0x03
-#define DTT_READ_TEMP_RMT_LSB 0x10
-#define DTT_TACHLIM_LSB 0x48
-#define DTT_TACHLIM_MSB 0x49
-#define DTT_FAN_CONFIG 0x4A
-#define DTT_PWM_FREQ 0x4D
-#define DTT_PWM_LOOKUP_BASE 0x50
-
-struct pwm_lookup_entry {
- u8 temp;
- u8 pwm;
-};
-
-/*
- * Device code
- */
-
-int dtt_read(int sensor, int reg)
-{
- int dlen;
- uchar data[2];
-
- /*
- * Calculate sensor address and register.
- */
- if (!sensor)
- sensor = DTT_I2C_LM63_ADDR; /* legacy config */
-
- dlen = 1;
-
- /*
- * 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)
-{
- int dlen;
- uchar data[2];
-
- /*
- * Calculate sensor address and register.
- */
- if (!sensor)
- sensor = DTT_I2C_LM63_ADDR; /* legacy config */
-
- 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 is_lm64(int sensor)
-{
- return sensor && (sensor != DTT_I2C_LM63_ADDR);
-}
-
-int dtt_init_one(int sensor)
-{
- int i;
- int val;
-
- struct pwm_lookup_entry pwm_lookup[] = CONFIG_DTT_PWM_LOOKUPTABLE;
-
- /*
- * Set PWM Frequency to 2.5% resolution
- */
- val = 20;
- if (dtt_write(sensor, DTT_PWM_FREQ, val) != 0)
- return 1;
-
- /*
- * Set Tachometer Limit
- */
- val = CONFIG_DTT_TACH_LIMIT;
- if (dtt_write(sensor, DTT_TACHLIM_LSB, val & 0xff) != 0)
- return 1;
- if (dtt_write(sensor, DTT_TACHLIM_MSB, (val >> 8) & 0xff) != 0)
- return 1;
-
- /*
- * Make sure PWM Lookup-Table is writeable
- */
- if (dtt_write(sensor, DTT_FAN_CONFIG, 0x20) != 0)
- return 1;
-
- /*
- * Setup PWM Lookup-Table
- */
- for (i = 0; i < ARRAY_SIZE(pwm_lookup); i++) {
- int address = DTT_PWM_LOOKUP_BASE + 2 * i;
- val = pwm_lookup[i].temp;
- if (is_lm64(sensor))
- val -= 16;
- if (dtt_write(sensor, address, val) != 0)
- return 1;
- val = dtt_read(sensor, address);
- val = pwm_lookup[i].pwm;
- if (dtt_write(sensor, address + 1, val) != 0)
- return 1;
- }
-
- /*
- * Enable PWM Lookup-Table, PWM Clock 360 kHz, Tachometer Mode 2
- */
- val = 0x02;
- if (dtt_write(sensor, DTT_FAN_CONFIG, val) != 0)
- return 1;
-
- /*
- * Enable Tach input
- */
- val = dtt_read(sensor, DTT_CONFIG) | 0x04;
- if (dtt_write(sensor, DTT_CONFIG, val) != 0)
- return 1;
-
- return 0;
-}
-
-int dtt_get_temp(int sensor)
-{
- s16 temp = (dtt_read(sensor, DTT_READ_TEMP_RMT_MSB) << 8)
- | (dtt_read(sensor, DTT_READ_TEMP_RMT_LSB));
-
- if (is_lm64(sensor))
- temp += 16 << 8;
-
- /* Ignore LSB for now, U-Boot only prints natural numbers */
- return temp >> 8;
-}