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| author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
| commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
| tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/s390/lib/delay.c | |
| parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
| download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip | |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/s390/lib/delay.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/s390/lib/delay.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/ANDROID_3.4.5/arch/s390/lib/delay.c b/ANDROID_3.4.5/arch/s390/lib/delay.c deleted file mode 100644 index 9f1f71e8..00000000 --- a/ANDROID_3.4.5/arch/s390/lib/delay.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * Precise Delay Loops for S390 - * - * Copyright IBM Corp. 1999,2008 - * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, - * Heiko Carstens <heiko.carstens@de.ibm.com>, - */ - -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/timex.h> -#include <linux/module.h> -#include <linux/irqflags.h> -#include <linux/interrupt.h> -#include <asm/div64.h> -#include <asm/timer.h> - -void __delay(unsigned long loops) -{ - /* - * To end the bloody studid and useless discussion about the - * BogoMips number I took the liberty to define the __delay - * function in a way that that resulting BogoMips number will - * yield the megahertz number of the cpu. The important function - * is udelay and that is done using the tod clock. -- martin. - */ - asm volatile("0: brct %0,0b" : : "d" ((loops/2) + 1)); -} - -static void __udelay_disabled(unsigned long long usecs) -{ - unsigned long cr0, cr6, new; - u64 clock_saved, end; - - end = get_clock() + (usecs << 12); - clock_saved = local_tick_disable(); - __ctl_store(cr0, 0, 0); - __ctl_store(cr6, 6, 6); - new = (cr0 & 0xffff00e0) | 0x00000800; - __ctl_load(new , 0, 0); - new = 0; - __ctl_load(new, 6, 6); - lockdep_off(); - do { - set_clock_comparator(end); - vtime_stop_cpu(); - local_irq_disable(); - } while (get_clock() < end); - lockdep_on(); - __ctl_load(cr0, 0, 0); - __ctl_load(cr6, 6, 6); - local_tick_enable(clock_saved); -} - -static void __udelay_enabled(unsigned long long usecs) -{ - u64 clock_saved, end; - - end = get_clock() + (usecs << 12); - do { - clock_saved = 0; - if (end < S390_lowcore.clock_comparator) { - clock_saved = local_tick_disable(); - set_clock_comparator(end); - } - vtime_stop_cpu(); - local_irq_disable(); - if (clock_saved) - local_tick_enable(clock_saved); - } while (get_clock() < end); -} - -/* - * Waits for 'usecs' microseconds using the TOD clock comparator. - */ -void __udelay(unsigned long long usecs) -{ - unsigned long flags; - - preempt_disable(); - local_irq_save(flags); - if (in_irq()) { - __udelay_disabled(usecs); - goto out; - } - if (in_softirq()) { - if (raw_irqs_disabled_flags(flags)) - __udelay_disabled(usecs); - else - __udelay_enabled(usecs); - goto out; - } - if (raw_irqs_disabled_flags(flags)) { - local_bh_disable(); - __udelay_disabled(usecs); - _local_bh_enable(); - goto out; - } - __udelay_enabled(usecs); -out: - local_irq_restore(flags); - preempt_enable(); -} -EXPORT_SYMBOL(__udelay); - -/* - * Simple udelay variant. To be used on startup and reboot - * when the interrupt handler isn't working. - */ -void udelay_simple(unsigned long long usecs) -{ - u64 end; - - end = get_clock() + (usecs << 12); - while (get_clock() < end) - cpu_relax(); -} - -void __ndelay(unsigned long long nsecs) -{ - u64 end; - - nsecs <<= 9; - do_div(nsecs, 125); - end = get_clock() + nsecs; - if (nsecs & ~0xfffUL) - __udelay(nsecs >> 12); - while (get_clock() < end) - barrier(); -} -EXPORT_SYMBOL(__ndelay); |