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generic: Add new file generic/io.h and move read/writeb() to it 

Move the definitions of the readb() style functions to a new header
generic/io.h.  This eliminates the dependency of stdint.h on
compiler.h.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2016-06-10 21:04:27 -04:00
parent 62f96f0911
commit 8e1c0941b0
3 changed files with 26 additions and 19 deletions
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1
src/avr/serial.c
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@ -7,6 +7,7 @@
#include <avr/interrupt.h> // USART0_RX_vect #include <avr/interrupt.h> // USART0_RX_vect
#include <string.h> // memmove #include <string.h> // memmove
#include "autoconf.h" // CONFIG_SERIAL_BAUD #include "autoconf.h" // CONFIG_SERIAL_BAUD
#include "board/io.h" // readb
#include "board/misc.h" // console_get_input #include "board/misc.h" // console_get_input
#include "sched.h" // DECL_INIT #include "sched.h" // DECL_INIT
#include "irq.h" // irq_save #include "irq.h" // irq_save

19
src/compiler.h
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@ -39,23 +39,4 @@
(((x) + ((__divisor) / 2)) / (__divisor)); \ (((x) + ((__divisor) / 2)) / (__divisor)); \
}) })
static inline void writel(void *addr, uint32_t val) {
*(volatile uint32_t *)addr = val;
}
static inline void writew(void *addr, uint16_t val) {
*(volatile uint16_t *)addr = val;
}
static inline void writeb(void *addr, uint8_t val) {
*(volatile uint8_t *)addr = val;
}
static inline uint32_t readl(const void *addr) {
return *(volatile const uint32_t *)addr;
}
static inline uint16_t readw(const void *addr) {
return *(volatile const uint16_t *)addr;
}
static inline uint8_t readb(const void *addr) {
return *(volatile const uint8_t *)addr;
}
#endif // compiler.h #endif // compiler.h

25
src/generic/io.h Normal file
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@ -0,0 +1,25 @@
#ifndef __GENERIC_IO_H
#define __GENERIC_IO_H
#include <stdint.h> // uint32_t
static inline void writel(void *addr, uint32_t val) {
*(volatile uint32_t *)addr = val;
}
static inline void writew(void *addr, uint16_t val) {
*(volatile uint16_t *)addr = val;
}
static inline void writeb(void *addr, uint8_t val) {
*(volatile uint8_t *)addr = val;
}
static inline uint32_t readl(const void *addr) {
return *(volatile const uint32_t *)addr;
}
static inline uint16_t readw(const void *addr) {
return *(volatile const uint16_t *)addr;
}
static inline uint8_t readb(const void *addr) {
return *(volatile const uint8_t *)addr;
}
#endif // io.h