diff options
author | Thomas Chou <thomas@wytron.com.tw> | 2015-10-09 13:46:34 +0800 |
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committer | Thomas Chou <thomas@wytron.com.tw> | 2015-10-23 07:37:03 +0800 |
commit | c8a7ba9e6a5fe2fc7b4a7894829aa0b0148b4d40 (patch) | |
tree | 6b6ca5091a7e6927ca2c27fcec0e0b195e1a64c2 /lib/time.c | |
parent | bcae80e9551bc0ba2d67e78bda57b9283b4bab12 (diff) |
dm: implement a Timer uclass
Implement a Timer uclass to work with lib/time.c.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'lib/time.c')
-rw-r--r-- | lib/time.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/time.c b/lib/time.c index 477440de16..b001745203 100644 --- a/lib/time.c +++ b/lib/time.c @@ -6,6 +6,9 @@ */ #include <common.h> +#include <dm.h> +#include <errno.h> +#include <timer.h> #include <watchdog.h> #include <div64.h> #include <asm/io.h> @@ -37,6 +40,52 @@ unsigned long notrace timer_read_counter(void) extern unsigned long __weak timer_read_counter(void); #endif +#ifdef CONFIG_TIMER +static int notrace dm_timer_init(void) +{ + struct udevice *dev; + int ret; + + if (!gd->timer) { + ret = uclass_first_device(UCLASS_TIMER, &dev); + if (ret) + return ret; + if (!dev) + return -ENODEV; + gd->timer = dev; + } + + return 0; +} + +ulong notrace get_tbclk(void) +{ + int ret; + + ret = dm_timer_init(); + if (ret) + return ret; + + return timer_get_rate(gd->timer); +} + +unsigned long notrace timer_read_counter(void) +{ + unsigned long count; + int ret; + + ret = dm_timer_init(); + if (ret) + return ret; + + ret = timer_get_count(gd->timer, &count); + if (ret) + return ret; + + return count; +} +#endif /* CONFIG_TIMER */ + uint64_t __weak notrace get_ticks(void) { unsigned long now = timer_read_counter(); |