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-rw-r--r--arch/arm/mach-omap2/timer-gp.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c
deleted file mode 100644
index 3b9cf85f4bb..00000000000
--- a/arch/arm/mach-omap2/timer-gp.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- * linux/arch/arm/mach-omap2/timer-gp.c
- *
- * OMAP2 GP timer support.
- *
- * Copyright (C) 2009 Nokia Corporation
- *
- * Update to use new clocksource/clockevent layers
- * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
- * Copyright (C) 2007 MontaVista Software, Inc.
- *
- * Original driver:
- * Copyright (C) 2005 Nokia Corporation
- * Author: Paul Mundt <paul.mundt@nokia.com>
- * Juha Yrjölä <juha.yrjola@nokia.com>
- * OMAP Dual-mode timer framework support by Timo Teras
- *
- * Some parts based off of TI's 24xx code:
- *
- * Copyright (C) 2004-2009 Texas Instruments, Inc.
- *
- * Roughly modelled after the OMAP1 MPU timer code.
- * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/init.h>
-#include <linux/time.h>
-#include <linux/interrupt.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
-
-#include <asm/mach/time.h>
-#include <plat/dmtimer.h>
-#include <asm/localtimer.h>
-#include <asm/sched_clock.h>
-#include <plat/common.h>
-#include <plat/omap_hwmod.h>
-
-#include "timer-gp.h"
-
-
-/* MAX_GPTIMER_ID: number of GPTIMERs on the chip */
-#define MAX_GPTIMER_ID 12
-
-static struct omap_dm_timer *gptimer;
-static struct clock_event_device clockevent_gpt;
-static u8 __initdata gptimer_id = 1;
-static u8 __initdata inited;
-struct omap_dm_timer *gptimer_wakeup;
-
-static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id)
-{
- struct omap_dm_timer *gpt = (struct omap_dm_timer *)dev_id;
- struct clock_event_device *evt = &clockevent_gpt;
-
- omap_dm_timer_write_status(gpt, OMAP_TIMER_INT_OVERFLOW);
-
- evt->event_handler(evt);
- return IRQ_HANDLED;
-}
-
-static struct irqaction omap2_gp_timer_irq = {
- .name = "gp timer",
- .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
- .handler = omap2_gp_timer_interrupt,
-};
-
-static int omap2_gp_timer_set_next_event(unsigned long cycles,
- struct clock_event_device *evt)
-{
- omap_dm_timer_set_load_start(gptimer, 0, 0xffffffff - cycles);
-
- return 0;
-}
-
-static void omap2_gp_timer_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
-{
- u32 period;
-
- omap_dm_timer_stop(gptimer);
-
- switch (mode) {
- case CLOCK_EVT_MODE_PERIODIC:
- period = clk_get_rate(omap_dm_timer_get_fclk(gptimer)) / HZ;
- period -= 1;
- omap_dm_timer_set_load_start(gptimer, 1, 0xffffffff - period);
- break;
- case CLOCK_EVT_MODE_ONESHOT:
- break;
- case CLOCK_EVT_MODE_UNUSED:
- case CLOCK_EVT_MODE_SHUTDOWN:
- case CLOCK_EVT_MODE_RESUME:
- break;
- }
-}
-
-static struct clock_event_device clockevent_gpt = {
- .name = "gp timer",
- .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
- .shift = 32,
- .set_next_event = omap2_gp_timer_set_next_event,
- .set_mode = omap2_gp_timer_set_mode,
-};
-
-/**
- * omap2_gp_clockevent_set_gptimer - set which GPTIMER is used for clockevents
- * @id: GPTIMER to use (1..MAX_GPTIMER_ID)
- *
- * Define the GPTIMER that the system should use for the tick timer.
- * Meant to be called from board-*.c files in the event that GPTIMER1, the
- * default, is unsuitable. Returns -EINVAL on error or 0 on success.
- */
-int __init omap2_gp_clockevent_set_gptimer(u8 id)
-{
- if (id < 1 || id > MAX_GPTIMER_ID)
- return -EINVAL;
-
- BUG_ON(inited);
-
- gptimer_id = id;
-
- return 0;
-}
-
-static void __init omap2_gp_clockevent_init(void)
-{
- u32 tick_rate;
- int src;
- char clockevent_hwmod_name[8]; /* 8 = sizeof("timerXX0") */
-
- inited = 1;
-
- sprintf(clockevent_hwmod_name, "timer%d", gptimer_id);
- omap_hwmod_setup_one(clockevent_hwmod_name);
-
- gptimer = omap_dm_timer_request_specific(gptimer_id);
- BUG_ON(gptimer == NULL);
- gptimer_wakeup = gptimer;
-
-#if defined(CONFIG_OMAP_32K_TIMER)
- src = OMAP_TIMER_SRC_32_KHZ;
-#else
- src = OMAP_TIMER_SRC_SYS_CLK;
- WARN(gptimer_id == 12, "WARNING: GPTIMER12 can only use the "
- "secure 32KiHz clock source\n");
-#endif
-
- if (gptimer_id != 12)
- WARN(IS_ERR_VALUE(omap_dm_timer_set_source(gptimer, src)),
- "timer-gp: omap_dm_timer_set_source() failed\n");
-
- tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer));
-
- pr_info("OMAP clockevent source: GPTIMER%d at %u Hz\n",
- gptimer_id, tick_rate);
-
- omap2_gp_timer_irq.dev_id = (void *)gptimer;
- setup_irq(omap_dm_timer_get_irq(gptimer), &omap2_gp_timer_irq);
- omap_dm_timer_set_int_enable(gptimer, OMAP_TIMER_INT_OVERFLOW);
-
- clockevent_gpt.mult = div_sc(tick_rate, NSEC_PER_SEC,
- clockevent_gpt.shift);
- clockevent_gpt.max_delta_ns =
- clockevent_delta2ns(0xffffffff, &clockevent_gpt);
- clockevent_gpt.min_delta_ns =
- clockevent_delta2ns(3, &clockevent_gpt);
- /* Timer internal resynch latency. */
-
- clockevent_gpt.cpumask = cpumask_of(0);
- clockevents_register_device(&clockevent_gpt);
-}
-
-/* Clocksource code */
-
-#ifdef CONFIG_OMAP_32K_TIMER
-/*
- * When 32k-timer is enabled, don't use GPTimer for clocksource
- * instead, just leave default clocksource which uses the 32k
- * sync counter. See clocksource setup in plat-omap/counter_32k.c
- */
-
-static void __init omap2_gp_clocksource_init(void)
-{
- omap_init_clocksource_32k();
-}
-
-#else
-/*
- * clocksource
- */
-static DEFINE_CLOCK_DATA(cd);
-static struct omap_dm_timer *gpt_clocksource;
-static cycle_t clocksource_read_cycles(struct clocksource *cs)
-{
- return (cycle_t)omap_dm_timer_read_counter(gpt_clocksource);
-}
-
-static struct clocksource clocksource_gpt = {
- .name = "gp timer",
- .rating = 300,
- .read = clocksource_read_cycles,
- .mask = CLOCKSOURCE_MASK(32),
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static void notrace dmtimer_update_sched_clock(void)
-{
- u32 cyc;
-
- cyc = omap_dm_timer_read_counter(gpt_clocksource);
-
- update_sched_clock(&cd, cyc, (u32)~0);
-}
-
-/* Setup free-running counter for clocksource */
-static void __init omap2_gp_clocksource_init(void)
-{
- static struct omap_dm_timer *gpt;
- u32 tick_rate;
- static char err1[] __initdata = KERN_ERR
- "%s: failed to request dm-timer\n";
- static char err2[] __initdata = KERN_ERR
- "%s: can't register clocksource!\n";
-
- gpt = omap_dm_timer_request();
- if (!gpt)
- printk(err1, clocksource_gpt.name);
- gpt_clocksource = gpt;
-
- omap_dm_timer_set_source(gpt, OMAP_TIMER_SRC_SYS_CLK);
- tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gpt));
-
- omap_dm_timer_set_load_start(gpt, 1, 0);
-
- init_sched_clock(&cd, dmtimer_update_sched_clock, 32, tick_rate);
-
- if (clocksource_register_hz(&clocksource_gpt, tick_rate))
- printk(err2, clocksource_gpt.name);
-}
-#endif
-
-static void __init omap2_gp_timer_init(void)
-{
-#ifdef CONFIG_LOCAL_TIMERS
- if (cpu_is_omap44xx()) {
- twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256);
- BUG_ON(!twd_base);
- }
-#endif
- omap_dm_timer_init();
-
- omap2_gp_clockevent_init();
- omap2_gp_clocksource_init();
-}
-
-struct sys_timer omap_timer = {
- .init = omap2_gp_timer_init,
-};
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