diff options
| author | Simon Glass <sjg@chromium.org> | 2017-05-17 03:25:05 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-05-22 08:37:11 -0400 |
| commit | 853eaa4f301c15584f3664f1be000921810d7825 (patch) | |
| tree | ad257d4e5d05911c05d7b1f5258b3d963a8f732c /drivers/hwmon/ds620.c | |
| parent | ab3c4fbe8a4f9357b0cf48bb396f8d8baaea5fe3 (diff) | |
| download | u-boot-853eaa4f301c15584f3664f1be000921810d7825.tar.gz | |
Drop digital thermometer and thermostat (DTT) drivers
This subsystem is quite old. It has been replaced with a driver-model
version (UCLASS_THERMAL). Boards are free to convert to that if required,
but here is a removal patch that could be applied in the meantime.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers/hwmon/ds620.c')
| -rw-r--r-- | drivers/hwmon/ds620.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/drivers/hwmon/ds620.c b/drivers/hwmon/ds620.c deleted file mode 100644 index 1ecc3da799..0000000000 --- a/drivers/hwmon/ds620.c +++ /dev/null @@ -1,65 +0,0 @@ -/* - * DS620 DTT support - * - * (C) Copyright 2014 3ADEV <http://www.3adev.com> - * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * Dallas Semiconductor's DS1621/1631 Digital Thermometer and Thermostat. - */ - -#include <common.h> -#include <i2c.h> -#include <dtt.h> - -/* - * Device code - */ -#define DTT_I2C_DEV_CODE 0x48 -#define DTT_START_CONVERT 0x51 -#define DTT_TEMP 0xAA -#define DTT_CONFIG 0xAC - -/* - * Config register MSB bits - */ -#define DTT_CONFIG_1SHOT 0x01 -#define DTT_CONFIG_AUTOC 0x02 -#define DTT_CONFIG_R0 0x04 /* always 1 */ -#define DTT_CONFIG_R1 0x08 /* always 1 */ -#define DTT_CONFIG_TLF 0x10 -#define DTT_CONFIG_THF 0x20 -#define DTT_CONFIG_NVB 0x40 -#define DTT_CONFIG_DONE 0x80 - -#define CHIP(sensor) (DTT_I2C_DEV_CODE + (sensor & 0x07)) - -int dtt_init_one(int sensor) -{ - uint8_t config = DTT_CONFIG_1SHOT - | DTT_CONFIG_R0 - | DTT_CONFIG_R1; - return i2c_write(CHIP(sensor), DTT_CONFIG, 1, &config, 1); -} - -int dtt_get_temp(int sensor) -{ - uint8_t status; - uint8_t temp[2]; - - /* Start a conversion, may take up to 1 second. */ - i2c_write(CHIP(sensor), DTT_START_CONVERT, 1, NULL, 0); - do { - if (i2c_read(CHIP(sensor), DTT_CONFIG, 1, &status, 1)) - /* bail out if I2C error */ - status |= DTT_CONFIG_DONE; - } while (!(status & DTT_CONFIG_DONE)); - if (i2c_read(CHIP(sensor), DTT_TEMP, 1, temp, 2)) - /* bail out if I2C error */ - return -274; /* below absolute zero == error */ - - return ((int16_t)(temp[1] | (temp[0] << 8))) >> 7; -} |