From f059429ea055c71648ae81c581eaa91d3761942b Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 19 Oct 2009 15:25:24 -0700 Subject: [PATCH] omap: Use getnstimeofday for omap_device Use getnstimeofday for omap_device Acked-by: Paul Walmsley Signed-off-by: Tony Lindgren --- arch/arm/plat-omap/omap_device.c | 50 ++++++++++++-------------------- 1 file changed, 19 insertions(+), 31 deletions(-) diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c index 2c409fc6dd21..12513f493daf 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -102,21 +102,6 @@ /* Private functions */ -/** - * _read_32ksynct - read the OMAP 32K sync timer - * - * Returns the current value of the 32KiHz synchronization counter. - * XXX this should be generalized to simply read the system clocksource. - * XXX this should be moved to a separate synctimer32k.c file - */ -static u32 _read_32ksynct(void) -{ - if (!cpu_class_is_omap2()) - BUG(); - - return __raw_readl(OMAP2_IO_ADDRESS(OMAP_32KSYNCT_BASE + 0x010)); -} - /** * _omap_device_activate - increase device readiness * @od: struct omap_device * @@ -133,13 +118,13 @@ static u32 _read_32ksynct(void) */ static int _omap_device_activate(struct omap_device *od, u8 ignore_lat) { - u32 a, b; + struct timespec a, b, c; pr_debug("omap_device: %s: activating\n", od->pdev.name); while (od->pm_lat_level > 0) { struct omap_device_pm_latency *odpl; - int act_lat = 0; + unsigned long long act_lat = 0; od->pm_lat_level--; @@ -149,20 +134,22 @@ static int _omap_device_activate(struct omap_device *od, u8 ignore_lat) (od->dev_wakeup_lat <= od->_dev_wakeup_lat_limit)) break; - a = _read_32ksynct(); + getnstimeofday(&a); /* XXX check return code */ odpl->activate_func(od); - b = _read_32ksynct(); + getnstimeofday(&b); - act_lat = (b - a) >> 15; /* 32KiHz cycles to microseconds */ + c = timespec_sub(b, a); + act_lat = timespec_to_ns(&c) * NSEC_PER_USEC; pr_debug("omap_device: %s: pm_lat %d: activate: elapsed time " - "%d usec\n", od->pdev.name, od->pm_lat_level, act_lat); + "%llu usec\n", od->pdev.name, od->pm_lat_level, + act_lat); WARN(act_lat > odpl->activate_lat, "omap_device: %s.%d: " - "activate step %d took longer than expected (%d > %d)\n", + "activate step %d took longer than expected (%llu > %d)\n", od->pdev.name, od->pdev.id, od->pm_lat_level, act_lat, odpl->activate_lat); @@ -188,13 +175,13 @@ static int _omap_device_activate(struct omap_device *od, u8 ignore_lat) */ static int _omap_device_deactivate(struct omap_device *od, u8 ignore_lat) { - u32 a, b; + struct timespec a, b, c; pr_debug("omap_device: %s: deactivating\n", od->pdev.name); while (od->pm_lat_level < od->pm_lats_cnt) { struct omap_device_pm_latency *odpl; - int deact_lat = 0; + unsigned long long deact_lat = 0; odpl = od->pm_lats + od->pm_lat_level; @@ -203,23 +190,24 @@ static int _omap_device_deactivate(struct omap_device *od, u8 ignore_lat) od->_dev_wakeup_lat_limit)) break; - a = _read_32ksynct(); + getnstimeofday(&a); /* XXX check return code */ odpl->deactivate_func(od); - b = _read_32ksynct(); + getnstimeofday(&b); - deact_lat = (b - a) >> 15; /* 32KiHz cycles to microseconds */ + c = timespec_sub(b, a); + deact_lat = timespec_to_ns(&c) * NSEC_PER_USEC; pr_debug("omap_device: %s: pm_lat %d: deactivate: elapsed time " - "%d usec\n", od->pdev.name, od->pm_lat_level, + "%llu usec\n", od->pdev.name, od->pm_lat_level, deact_lat); WARN(deact_lat > odpl->deactivate_lat, "omap_device: %s.%d: " - "deactivate step %d took longer than expected (%d > %d)\n", - od->pdev.name, od->pdev.id, od->pm_lat_level, - deact_lat, odpl->deactivate_lat); + "deactivate step %d took longer than expected " + "(%llu > %d)\n", od->pdev.name, od->pdev.id, + od->pm_lat_level, deact_lat, odpl->deactivate_lat); od->dev_wakeup_lat += odpl->activate_lat;