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zephyr/drivers/i2c/i2c-priv.h

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i2c: Add helper function to map from bitrate values to zephyr cfg Add _i2c_map_dt_bitrate() that maps from a bitrate to the I2C zephyr cfg bit fields used in i2c_configure(). Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-08-11 01:22:27 +08:00
/*
* Copyright (c) 2017 Linaro Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
headers: Fix headers across the project Any word started with underscore followed by and uppercase letter or a second underscore is a reserved word according with C99. Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
2018-09-15 01:43:44 +08:00
#ifndef ZEPHYR_DRIVERS_I2C_I2C_PRIV_H_
#define ZEPHYR_DRIVERS_I2C_I2C_PRIV_H_
i2c: Add helper function to map from bitrate values to zephyr cfg Add _i2c_map_dt_bitrate() that maps from a bitrate to the I2C zephyr cfg bit fields used in i2c_configure(). Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-08-11 01:22:27 +08:00
drivers: migrate includes to <zephyr/...> In order to bring consistency in-tree, migrate all drivers to the new prefix <zephyr/...>. Note that the conversion has been scripted, refer to #45388 for more details. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-05-06 16:25:46 +08:00
#include <zephyr/drivers/i2c.h>
#include <zephyr/dt-bindings/i2c/i2c.h>
#include <zephyr/logging/log.h>
i2c: Add helper function to map from bitrate values to zephyr cfg Add _i2c_map_dt_bitrate() that maps from a bitrate to the I2C zephyr cfg bit fields used in i2c_configure(). Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-08-11 01:22:27 +08:00
drivers: rearrange for standard use of extern "C" in private headers Consistently place C++ use of extern "C" after all include directives, within the negative branch of _ASMLANGUAGE if used. Only updated in headers that already had support for drivers built with a C++ compiler. The spi_dw.h file defines macros to declare functions, then uses them within a file that may have out-of-tree overrides. In this case we leave the including file extern "C" active for backward compatibility. Background from issue #17997: Declarations that use C linkage should be placed within extern "C" so the language linkage is correct when the header is included by a C++ compiler. Similarly #include directives should be outside the extern "C" to ensure the language-specific default linkage is applied to any declarations provided by the included header. See: https://en.cppreference.com/w/cpp/language/language_linkage Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
2019-08-13 01:54:23 +08:00
#ifdef __cplusplus
extern "C" {
#endif
zephyr: replace zephyr integer types with C99 types git grep -l 'u\(8\|16\|32\|64\)_t' | \ xargs sed -i "s/u\(8\|16\|32\|64\)_t/uint\1_t/g" git grep -l 's\(8\|16\|32\|64\)_t' | \ xargs sed -i "s/s\(8\|16\|32\|64\)_t/int\1_t/g" Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-05-28 00:26:57 +08:00
static inline uint32_t i2c_map_dt_bitrate(uint32_t bitrate)
i2c: Add helper function to map from bitrate values to zephyr cfg Add _i2c_map_dt_bitrate() that maps from a bitrate to the I2C zephyr cfg bit fields used in i2c_configure(). Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-08-11 01:22:27 +08:00
{
switch (bitrate) {
case I2C_BITRATE_STANDARD:
return I2C_SPEED_STANDARD << I2C_SPEED_SHIFT;
case I2C_BITRATE_FAST:
return I2C_SPEED_FAST << I2C_SPEED_SHIFT;
case I2C_BITRATE_FAST_PLUS:
return I2C_SPEED_FAST_PLUS << I2C_SPEED_SHIFT;
case I2C_BITRATE_HIGH:
return I2C_SPEED_HIGH << I2C_SPEED_SHIFT;
case I2C_BITRATE_ULTRA:
return I2C_SPEED_ULTRA << I2C_SPEED_SHIFT;
}
drivers: i2c: move to new logger Move to new logger subsystem. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-09-18 02:24:08 +08:00
LOG_ERR("Invalid I2C bit rate value");
i2c: Add helper function to map from bitrate values to zephyr cfg Add _i2c_map_dt_bitrate() that maps from a bitrate to the I2C zephyr cfg bit fields used in i2c_configure(). Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-08-11 01:22:27 +08:00
return 0;
}
#ifdef __cplusplus
}
#endif
headers: Fix headers across the project Any word started with underscore followed by and uppercase letter or a second underscore is a reserved word according with C99. Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
2018-09-15 01:43:44 +08:00
#endif /* ZEPHYR_DRIVERS_I2C_I2C_PRIV_H_ */