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authorDavid Brown <davidb@codeaurora.org>2011-03-17 01:13:16 -0400
committerDavid Brown <davidb@codeaurora.org>2011-03-17 01:13:16 -0400
commit92c260f755c42337c550d8ac1f8ccd1b32bffb20 (patch)
tree6d04fefc1adeecabfb2b00c201e0db78fa2b5529 /arch/arm/mach-omap2/timer-gp.c
parent8e76a80960bf06c245160a484d5a363ca6b520bb (diff)
parent05e34754518b6a90d5c392790c032575fab12d66 (diff)
Merge remote branch 'rmk/for-linus' into for-linus
* rmk/for-linus: (1557 commits) ARM: 6806/1: irq: introduce entry and exit functions for chained handlers ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas ARM: 6747/1: P2V: Thumb2 support ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9 ARM: 6772/1: errata: possible fault MMU translations following an ASID switch ARM: 6776/1: mach-ux500: activate fix for errata 753970 ARM: 6794/1: SPEAr: Append UL to device address macros. ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files. ARM: 6681/1: SPEAr: add debugfs support to clk API ARM: 6703/1: SPEAr: update clk API support ARM: 6679/1: SPEAr: make clk API functions more generic ARM: 6737/1: SPEAr: formalized timer support ... Conflicts: arch/arm/mach-msm/board-msm7x27.c arch/arm/mach-msm/board-msm7x30.c arch/arm/mach-msm/board-qsd8x50.c arch/arm/mach-msm/board-sapphire.c arch/arm/mach-msm/include/mach/memory.h
Diffstat (limited to 'arch/arm/mach-omap2/timer-gp.c')
-rw-r--r--arch/arm/mach-omap2/timer-gp.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c
index 4e48e786bec7..0fc550e7e482 100644
--- a/arch/arm/mach-omap2/timer-gp.c
+++ b/arch/arm/mach-omap2/timer-gp.c
@@ -39,9 +39,12 @@
39#include <asm/mach/time.h> 39#include <asm/mach/time.h>
40#include <plat/dmtimer.h> 40#include <plat/dmtimer.h>
41#include <asm/localtimer.h> 41#include <asm/localtimer.h>
42#include <asm/sched_clock.h>
42 43
43#include "timer-gp.h" 44#include "timer-gp.h"
44 45
46#include <plat/common.h>
47
45/* MAX_GPTIMER_ID: number of GPTIMERs on the chip */ 48/* MAX_GPTIMER_ID: number of GPTIMERs on the chip */
46#define MAX_GPTIMER_ID 12 49#define MAX_GPTIMER_ID 12
47 50
@@ -176,14 +179,19 @@ static void __init omap2_gp_clockevent_init(void)
176/* 179/*
177 * When 32k-timer is enabled, don't use GPTimer for clocksource 180 * When 32k-timer is enabled, don't use GPTimer for clocksource
178 * instead, just leave default clocksource which uses the 32k 181 * instead, just leave default clocksource which uses the 32k
179 * sync counter. See clocksource setup in see plat-omap/common.c. 182 * sync counter. See clocksource setup in plat-omap/counter_32k.c
180 */ 183 */
181 184
182static inline void __init omap2_gp_clocksource_init(void) {} 185static void __init omap2_gp_clocksource_init(void)
186{
187 omap_init_clocksource_32k();
188}
189
183#else 190#else
184/* 191/*
185 * clocksource 192 * clocksource
186 */ 193 */
194static DEFINE_CLOCK_DATA(cd);
187static struct omap_dm_timer *gpt_clocksource; 195static struct omap_dm_timer *gpt_clocksource;
188static cycle_t clocksource_read_cycles(struct clocksource *cs) 196static cycle_t clocksource_read_cycles(struct clocksource *cs)
189{ 197{
@@ -198,6 +206,15 @@ static struct clocksource clocksource_gpt = {
198 .flags = CLOCK_SOURCE_IS_CONTINUOUS, 206 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
199}; 207};
200 208
209static void notrace dmtimer_update_sched_clock(void)
210{
211 u32 cyc;
212
213 cyc = omap_dm_timer_read_counter(gpt_clocksource);
214
215 update_sched_clock(&cd, cyc, (u32)~0);
216}
217
201/* Setup free-running counter for clocksource */ 218/* Setup free-running counter for clocksource */
202static void __init omap2_gp_clocksource_init(void) 219static void __init omap2_gp_clocksource_init(void)
203{ 220{
@@ -218,6 +235,8 @@ static void __init omap2_gp_clocksource_init(void)
218 235
219 omap_dm_timer_set_load_start(gpt, 1, 0); 236 omap_dm_timer_set_load_start(gpt, 1, 0);
220 237
238 init_sched_clock(&cd, dmtimer_update_sched_clock, 32, tick_rate);
239
221 if (clocksource_register_hz(&clocksource_gpt, tick_rate)) 240 if (clocksource_register_hz(&clocksource_gpt, tick_rate))
222 printk(err2, clocksource_gpt.name); 241 printk(err2, clocksource_gpt.name);
223} 242}