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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* common.h - Common includes for Chrome EC */
#ifndef __CROS_EC_COMMON_H
#define __CROS_EC_COMMON_H
#include <stdint.h>
/*
* Macros to concatenate 2 - 4 tokens together to form a single token.
* Multiple levels of nesting are required to convince the preprocessor to
* expand currently-defined tokens before concatenation.
*
* For example, if you have
* #define FOO 1
* #define BAR1 42
* Then
* #define BAZ CONCAT2(BAR, FOO)
* Will evaluate to BAR1, which then evaluates to 42.
*/
#define CONCAT_STAGE_1(w, x, y, z) w ## x ## y ## z
#define CONCAT2(w, x) CONCAT_STAGE_1(w, x, , )
#define CONCAT3(w, x, y) CONCAT_STAGE_1(w, x, y, )
#define CONCAT4(w, x, y, z) CONCAT_STAGE_1(w, x, y, z)
/*
* Macros to turn the argument into a string constant.
*
* Compared to directly using the preprocessor # operator, this 2-stage macro
* is safe with regards to using nested macros and defined arguments.
*/
#define STRINGIFY0(name) #name
#define STRINGIFY(name) STRINGIFY0(name)
/* Macros to access registers */
#define REG32(addr) (*(volatile uint32_t *)(addr))
#define REG16(addr) (*(volatile uint16_t *)(addr))
#define REG8(addr) (*(volatile uint8_t *)(addr))
/*
* Define __aligned(n) and __packed if someone hasn't beat us to it. Linux
* kernel style checking prefers these over __attribute__((packed)) and
* __attribute__((aligned(n))).
*/
#ifndef __aligned
#define __aligned(n) __attribute__((aligned(n)))
#endif
#ifndef __packed
#define __packed __attribute__((packed))
#endif
/* There isn't really a better place for this */
#define C_TO_K(temp_c) ((temp_c) + 273)
#define K_TO_C(temp_c) ((temp_c) - 273)
#define CELSIUS_TO_DECI_KELVIN(temp_c) ((temp_c) * 10 + 2731)
#define DECI_KELVIN_TO_CELSIUS(temp_dk) ((temp_dk - 2731) / 10)
/* Include top-level configuration file */
#include "config.h"
/* Canonical list of module IDs */
#include "module_id.h"
/* List of common error codes that can be returned */
enum ec_error_list {
/* Success - no error */
EC_SUCCESS = 0,
/* Unknown error */
EC_ERROR_UNKNOWN = 1,
/* Function not implemented yet */
EC_ERROR_UNIMPLEMENTED = 2,
/* Overflow error; too much input provided. */
EC_ERROR_OVERFLOW = 3,
/* Timeout */
EC_ERROR_TIMEOUT = 4,
/* Invalid argument */
EC_ERROR_INVAL = 5,
/* Already in use, or not ready yet */
EC_ERROR_BUSY = 6,
/* Access denied */
EC_ERROR_ACCESS_DENIED = 7,
/* Failed because component does not have power */
EC_ERROR_NOT_POWERED = 8,
/* Failed because component is not calibrated */
EC_ERROR_NOT_CALIBRATED = 9,
/* Invalid console command param (PARAMn means parameter n is bad) */
EC_ERROR_PARAM1 = 11,
EC_ERROR_PARAM2 = 12,
EC_ERROR_PARAM3 = 13,
EC_ERROR_PARAM4 = 14,
EC_ERROR_PARAM5 = 15,
EC_ERROR_PARAM6 = 16,
EC_ERROR_PARAM7 = 17,
EC_ERROR_PARAM8 = 18,
EC_ERROR_PARAM9 = 19,
EC_ERROR_PARAM_COUNT = 20, /* Wrong number of params */
/* Module-internal error codes may use this range. */
EC_ERROR_INTERNAL_FIRST = 0x10000,
EC_ERROR_INTERNAL_LAST = 0x1FFFF
};
/*
* Define test_mockable and test_mockable_static for mocking
* functions.
*/
#ifdef TEST_BUILD
#define test_mockable __attribute__((weak))
#define test_mockable_static __attribute__((weak))
#define test_export_static
#else
#define test_mockable
#define test_mockable_static static
#define test_export_static static
#endif
/*
* accessor allowing to override some read only data accesses.
* used to workaround a buggy toolchain (cf http://crosbug.com/p/24378)
*/
#ifndef RO
#define RO(var) var
#endif
#endif /* __CROS_EC_COMMON_H */
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