/*
* Write the current syncpoint value back to hw.
*/
static void syncpt_restore(struct host1x_syncpt *sp)
{
u32 min = host1x_syncpt_read_min(sp);
struct host1x *host = sp->host;
host1x_sync_writel(host, min, HOST1X_SYNC_SYNCPT(sp->id));
}
/*
* Updates the last value read from hardware.
*/
static u32 syncpt_load(struct host1x_syncpt *sp)
{
struct host1x *host = sp->host;
u32 old, live;
/* Loop in case there's a race writing to min_val */
do {
old = host1x_syncpt_read_min(sp);
live = host1x_sync_readl(host, HOST1X_SYNC_SYNCPT(sp->id));
} while ((u32)atomic_cmpxchg(&sp->min_val, old, live) != old);
if (!host1x_syncpt_check_max(sp, live))
dev_err(host->dev, "%s failed: id=%u, min=%d, max=%d\n",
__func__, sp->id, host1x_syncpt_read_min(sp),
host1x_syncpt_read_max(sp));
return live;
}
