diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/wait_bit.h | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/include/wait_bit.h b/include/wait_bit.h index e8acfa5776..bd021baa48 100644 --- a/include/wait_bit.h +++ b/include/wait_bit.h @@ -16,60 +16,6 @@ #include <asm/io.h> /** - * wait_for_bit() waits for bit set/cleared in register - * - * Function polls register waiting for specific bit(s) change - * (either 0->1 or 1->0). It can fail under two conditions: - * - Timeout - * - User interaction (CTRL-C) - * Function succeeds only if all bits of masked register are set/cleared - * (depending on set option). - * - * @param prefix Prefix added to timeout messagge (message visible only - * with debug enabled) - * @param reg Register that will be read (using readl()) - * @param mask Bit(s) of register that must be active - * @param set Selects wait condition (bit set or clear) - * @param timeout_ms Timeout (in miliseconds) - * @param breakable Enables CTRL-C interruption - * @return 0 on success, -ETIMEDOUT or -EINTR on failure - */ -static inline int wait_for_bit(const char *prefix, const u32 *reg, - const u32 mask, const bool set, - const unsigned int timeout_ms, - const bool breakable) -{ - u32 val; - unsigned long start = get_timer(0); - - while (1) { - val = readl(reg); - - if (!set) - val = ~val; - - if ((val & mask) == mask) - return 0; - - if (get_timer(start) > timeout_ms) - break; - - if (breakable && ctrlc()) { - puts("Abort\n"); - return -EINTR; - } - - udelay(1); - WATCHDOG_RESET(); - } - - debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n", prefix, reg, mask, - set); - - return -ETIMEDOUT; -} - -/** * wait_for_bit_x() waits for bit set/cleared in register * * Function polls register waiting for specific bit(s) change |