Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=832348ff0bf1538e026ff862f91ab6db06e73499
Commit: 832348ff0bf1538e026ff862f91ab6db06e73499
Parent: 15ad838d281b3681d96e37cba8a628177da8f4ff
Author: Ralf Baechle <[EMAIL PROTECTED]>
AuthorDate: Thu Oct 18 01:10:12 2007 +0100
Committer: Ralf Baechle <[EMAIL PROTECTED]>
CommitDate: Thu Oct 18 18:11:46 2007 +0100
[MIPS] JMR3927: Convert to clock_event_device.
This separate the tick timer stuff from the generic MIPS time.c.
Signed-off-by: Ralf Baechle <[EMAIL PROTECTED]>
---
arch/mips/jmr3927/rbhma3100/setup.c | 66 +++++++++++++++++++++++++----------
1 files changed, 47 insertions(+), 19 deletions(-)
diff --git a/arch/mips/jmr3927/rbhma3100/setup.c
b/arch/mips/jmr3927/rbhma3100/setup.c
index 0c7aee1..edb9e59 100644
--- a/arch/mips/jmr3927/rbhma3100/setup.c
+++ b/arch/mips/jmr3927/rbhma3100/setup.c
@@ -1,15 +1,4 @@
-/***********************************************************************
- *
- * Copyright 2001 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- * [EMAIL PROTECTED]
- *
- * Based on arch/mips/ddb5xxx/ddb5477/setup.c
- *
- * Setup file for JMR3927.
- *
- * Copyright (C) 2000-2001 Toshiba Corporation
- *
+/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
@@ -30,9 +19,15 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
- ***********************************************************************
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * [EMAIL PROTECTED]
+ *
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ * Copyright (C) 2007 Ralf Baechle ([EMAIL PROTECTED])
*/
+#include <linux/clockchips.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
@@ -104,27 +99,60 @@ static cycle_t jmr3927_hpt_read(void)
return jiffies * (JMR3927_TIMER_CLK / HZ) + jmr3927_tmrptr->trr;
}
-static void jmr3927_timer_ack(void)
+static void jmr3927_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *evt)
+{
+ /* Nothing to do here */
+}
+
+struct clock_event_device jmr3927_clock_event_device = {
+ .name = "MIPS",
+ .features = CLOCK_EVT_FEAT_PERIODIC,
+ .shift = 32,
+ .rating = 300,
+ .cpumask = CPU_MASK_CPU0,
+ .irq = JMR3927_IRQ_TICK,
+ .set_mode = jmr3927_set_mode,
+};
+
+static irqreturn_t jmr3927_timer_interrupt(int irq, void *dev_id)
{
+ struct clock_event_device *cd = &jmr3927_clock_event_device;
+
jmr3927_tmrptr->tisr = 0; /* ack interrupt */
+
+ cd->event_handler(cd);
+
+ return IRQ_HANDLED;
}
+static struct irqaction jmr3927_timer_irqaction = {
+ .handler = jmr3927_timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_PERCPU,
+ .name = "jmr3927-timer",
+};
+
void __init plat_time_init(void)
{
+ struct clock_event_device *cd;
+
clocksource_mips.read = jmr3927_hpt_read;
- mips_timer_ack = jmr3927_timer_ack;
mips_hpt_frequency = JMR3927_TIMER_CLK;
-}
-void __init plat_timer_setup(struct irqaction *irq)
-{
jmr3927_tmrptr->cpra = JMR3927_TIMER_CLK / HZ;
jmr3927_tmrptr->itmr = TXx927_TMTITMR_TIIE | TXx927_TMTITMR_TZCE;
jmr3927_tmrptr->ccdr = JMR3927_TIMER_CCD;
jmr3927_tmrptr->tcr =
TXx927_TMTCR_TCE | TXx927_TMTCR_CCDE | TXx927_TMTCR_TMODE_ITVL;
- setup_irq(JMR3927_IRQ_TICK, irq);
+ cd = &jmr3927_clock_event_device;
+ /* Calculate the min / max delta */
+ cd->mult = div_sc((unsigned long) JMR3927_IMCLK, NSEC_PER_SEC, 32);
+ cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd);
+ cd->min_delta_ns = clockevent_delta2ns(0x300, cd);
+ clockevents_register_device(cd);
+
+ setup_irq(JMR3927_IRQ_TICK, &jmr3927_timer_irqaction);
}
#define DO_WRITE_THROUGH
-
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