1 files changed, 17 insertions, 108 deletions

diff --git a/tmk_core/common/wait.h b/tmk_core/common/wait.h
index 28224fe3a..cf7180fb0 100644
--- a/tmk_core/common/wait.h
+++ b/tmk_core/common/wait.h
@@ -1,3 +1,18 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 #pragma once
 
 #include <inttypes.h>
@@ -6,114 +21,8 @@
 extern "C" {
 #endif
 
-#if defined(__ARMEL__) || defined(__ARMEB__)
-#    ifndef __OPTIMIZE__
-#        pragma message "Compiler optimizations disabled; wait_cpuclock() won't work as designed"
-#    endif
-
-#    define wait_cpuclock(x) wait_cpuclock_allnop(x)
-
-#    define CLOCK_DELAY_NOP8 "nop\n\t nop\n\t nop\n\t nop\n\t   nop\n\t nop\n\t nop\n\t nop\n\t"
-
-__attribute__((always_inline)) static inline void wait_cpuclock_allnop(unsigned int n) { /* n: 1..135 */
-    /* The argument n must be a constant expression.
-     * That way, compiler optimization will remove unnecessary code. */
-    if (n < 1) {
-        return;
-    }
-    if (n > 8) {
-        unsigned int n8 = n / 8;
-        n               = n - n8 * 8;
-        switch (n8) {
-            case 16:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 15:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 14:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 13:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 12:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 11:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 10:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 9:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 8:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 7:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 6:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 5:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 4:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 3:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 2:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 1:
-                asm volatile(CLOCK_DELAY_NOP8::: "memory");
-            case 0:
-                break;
-        }
-    }
-    switch (n) {
-        case 8:
-            asm volatile("nop" ::: "memory");
-        case 7:
-            asm volatile("nop" ::: "memory");
-        case 6:
-            asm volatile("nop" ::: "memory");
-        case 5:
-            asm volatile("nop" ::: "memory");
-        case 4:
-            asm volatile("nop" ::: "memory");
-        case 3:
-            asm volatile("nop" ::: "memory");
-        case 2:
-            asm volatile("nop" ::: "memory");
-        case 1:
-            asm volatile("nop" ::: "memory");
-        case 0:
-            break;
-    }
-}
-#endif
-
-#if defined(__AVR__)
-#    include <util/delay.h>
-#    define wait_ms(ms) _delay_ms(ms)
-#    define wait_us(us) _delay_us(us)
-#    define wait_cpuclock(x) __builtin_avr_delay_cycles(x)
-#elif defined PROTOCOL_CHIBIOS
-#    include <ch.h>
-#    define wait_ms(ms)                     \
-        do {                                \
-            if (ms != 0) {                  \
-                chThdSleepMilliseconds(ms); \
-            } else {                        \
-                chThdSleepMicroseconds(1);  \
-            }                               \
-        } while (0)
-#    define wait_us(us)                     \
-        do {                                \
-            if (us != 0) {                  \
-                chThdSleepMicroseconds(us); \
-            } else {                        \
-                chThdSleepMicroseconds(1);  \
-            }                               \
-        } while (0)
-#elif defined PROTOCOL_ARM_ATSAM
-#    include "clks.h"
-#    define wait_ms(ms) CLK_delay_ms(ms)
-#    define wait_us(us) CLK_delay_us(us)
-#else  // Unit tests
-void wait_ms(uint32_t ms);
-#    define wait_us(us) wait_ms(us / 1000)
+#if __has_include_next("_wait.h")
+#    include_next "_wait.h" /* Include the platforms _wait.h */
 #endif
 
 #ifdef __cplusplus