[PATCH 2/3] clocksource: add DB8500 PRCMU Timer support
From: Thomas Gleixner <hidden>
Date: 2011-05-31 10:38:43
Also in:
lkml
On Tue, 31 May 2011, Mattias Wallin wrote:
+static cycle_t clksrc_db8500_prcmu_read(struct clocksource *cs)
+{
+ u32 count, count2;
+
+ do {
+ count = readl(PRCMU_TIMER_4_DOWNCOUNT);
+ count2 = readl(PRCMU_TIMER_4_DOWNCOUNT);
+ } while (count2 != count);What's the point of this exercise ?
+ clocksource_calc_mult_shift(&clocksource_db8500_prcmu, + RATE_32K, SCHED_CLOCK_MIN_WRAP); + clocksource_register(&clocksource_db8500_prcmu);
Please use clocksource_register_hz()
quoted hunk ↗ jump to hunk
diff --git a/include/linux/clksrc-db8500-prcmu.h b/include/linux/clksrc-db8500-prcmu.h new file mode 100644 index 0000000..42b8587 --- /dev/null +++ b/include/linux/clksrc-db8500-prcmu.h
Huch, why needs this to be a separate head in include/linux ?
quoted hunk ↗ jump to hunk
@@ -0,0 +1,17 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * + * License Terms: GNU General Public License v2 + * Author: Mattias Wallin <mattias.wallin@stericsson.com> + * + */ +#ifndef __CLKSRC_DB8500_PRCMU_H +#define __CLKSRC_DB8500_PRCMU_H + +#ifdef CONFIG_CLKSRC_DB8500_PRCMU +void __init clksrc_db8500_prcmu_init(void); +#else +void __init clksrc_db8500_prcmu_init(void) {} +#endif + +#endif-- 1.7.4.3