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FMC DEL 1ns 4cha - Software
Commit ebd5848f authored by Alessandro Rubini's avatar Alessandro Rubini
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set-time: restore GCR after setting time

parent 0ab4f3b0
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Showing with 4 additions and 2 deletions
time.c
View file @ ebd5848f
......@@ -20,13 +20,14 @@
/* If fd_time is not null, use it. if ts is not null, use it, else current */
int fd_time_set(struct spec_fd *fd, struct fd_time *t, struct timespec *ts)
{
uint32_t tcr;
uint32_t tcr, gcr;
unsigned long flags;
struct timespec localts;
spin_lock_irqsave(&fd->lock, flags);
fd_writel(fd, 0, FD_REG_GCR);
gcr = fd_readl(fd, FD_REG_GCR);
fd_writel(fd, 0, FD_REG_GCR); /* zero the GCR while setting time */
if (t) {
fd_writel(fd, t->utc >> 32, FD_REG_TM_SECH);
fd_writel(fd, t->utc & 0xffffffff, FD_REG_TM_SECL);
......@@ -47,6 +48,7 @@ int fd_time_set(struct spec_fd *fd, struct fd_time *t, struct timespec *ts)
tcr = fd_readl(fd, FD_REG_TCR);
fd_writel(fd, tcr | FD_TCR_SET_TIME, FD_REG_TCR);
fd_writel(fd, gcr, FD_REG_GCR); /* Restore GCR */
spin_unlock_irqrestore(&fd->lock, flags);
return 0;
......
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