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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/plat-omap/counter_32k.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/arm/plat-omap/counter_32k.c')
-rw-r--r-- | ANDROID_3.4.5/arch/arm/plat-omap/counter_32k.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/ANDROID_3.4.5/arch/arm/plat-omap/counter_32k.c b/ANDROID_3.4.5/arch/arm/plat-omap/counter_32k.c deleted file mode 100644 index 5068fe5a..00000000 --- a/ANDROID_3.4.5/arch/arm/plat-omap/counter_32k.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * OMAP 32ksynctimer/counter_32k-related code - * - * Copyright (C) 2009 Texas Instruments - * Copyright (C) 2010 Nokia Corporation - * Tony Lindgren <tony@atomide.com> - * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * NOTE: This timer is not the same timer as the old OMAP1 MPU timer. - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/clocksource.h> - -#include <asm/sched_clock.h> - -#include <plat/hardware.h> -#include <plat/common.h> -#include <plat/board.h> - -#include <plat/clock.h> - -/* - * 32KHz clocksource ... always available, on pretty most chips except - * OMAP 730 and 1510. Other timers could be used as clocksources, with - * higher resolution in free-running counter modes (e.g. 12 MHz xtal), - * but systems won't necessarily want to spend resources that way. - */ -static void __iomem *timer_32k_base; - -#define OMAP16XX_TIMER_32K_SYNCHRONIZED 0xfffbc410 - -static u32 notrace omap_32k_read_sched_clock(void) -{ - return timer_32k_base ? __raw_readl(timer_32k_base) : 0; -} - -/** - * read_persistent_clock - Return time from a persistent clock. - * - * Reads the time from a source which isn't disabled during PM, the - * 32k sync timer. Convert the cycles elapsed since last read into - * nsecs and adds to a monotonically increasing timespec. - */ -static struct timespec persistent_ts; -static cycles_t cycles, last_cycles; -static unsigned int persistent_mult, persistent_shift; -void read_persistent_clock(struct timespec *ts) -{ - unsigned long long nsecs; - cycles_t delta; - struct timespec *tsp = &persistent_ts; - - last_cycles = cycles; - cycles = timer_32k_base ? __raw_readl(timer_32k_base) : 0; - delta = cycles - last_cycles; - - nsecs = clocksource_cyc2ns(delta, persistent_mult, persistent_shift); - - timespec_add_ns(tsp, nsecs); - *ts = *tsp; -} - -int __init omap_init_clocksource_32k(void) -{ - static char err[] __initdata = KERN_ERR - "%s: can't register clocksource!\n"; - - if (cpu_is_omap16xx() || cpu_class_is_omap2()) { - u32 pbase; - unsigned long size = SZ_4K; - void __iomem *base; - struct clk *sync_32k_ick; - - if (cpu_is_omap16xx()) { - pbase = OMAP16XX_TIMER_32K_SYNCHRONIZED; - size = SZ_1K; - } else if (cpu_is_omap2420()) - pbase = OMAP2420_32KSYNCT_BASE + 0x10; - else if (cpu_is_omap2430()) - pbase = OMAP2430_32KSYNCT_BASE + 0x10; - else if (cpu_is_omap34xx()) - pbase = OMAP3430_32KSYNCT_BASE + 0x10; - else if (cpu_is_omap44xx()) - pbase = OMAP4430_32KSYNCT_BASE + 0x10; - else - return -ENODEV; - - /* For this to work we must have a static mapping in io.c for this area */ - base = ioremap(pbase, size); - if (!base) - return -ENODEV; - - sync_32k_ick = clk_get(NULL, "omap_32ksync_ick"); - if (!IS_ERR(sync_32k_ick)) - clk_enable(sync_32k_ick); - - timer_32k_base = base; - - /* - * 120000 rough estimate from the calculations in - * __clocksource_updatefreq_scale. - */ - clocks_calc_mult_shift(&persistent_mult, &persistent_shift, - 32768, NSEC_PER_SEC, 120000); - - if (clocksource_mmio_init(base, "32k_counter", 32768, 250, 32, - clocksource_mmio_readl_up)) - printk(err, "32k_counter"); - - setup_sched_clock(omap_32k_read_sched_clock, 32, 32768); - } - return 0; -} |