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From: Juergen Beisert <jbe@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 08/14] MACH SAMSUNG/S3C: Separate the clocksource for the S3C family
Date: Mon,  2 Jan 2012 12:43:56 +0100	[thread overview]
Message-ID: <1325504642-9324-9-git-send-email-jbe@pengutronix.de> (raw)
In-Reply-To: <1325504642-9324-1-git-send-email-jbe@pengutronix.de>

This patch just move the clocksource functions out of the generic.c source file
to handle it on a per CPU base later on.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
---
 arch/arm/mach-samsung/Makefile    |    2 +-
 arch/arm/mach-samsung/generic.c   |   33 ----------------------
 arch/arm/mach-samsung/s3c-timer.c |   55 +++++++++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+), 34 deletions(-)
 create mode 100644 arch/arm/mach-samsung/s3c-timer.c

diff --git a/arch/arm/mach-samsung/Makefile b/arch/arm/mach-samsung/Makefile
index c590180..2ba5c3f 100644
--- a/arch/arm/mach-samsung/Makefile
+++ b/arch/arm/mach-samsung/Makefile
@@ -1,3 +1,3 @@
-obj-y += generic.o
+obj-y += s3c-timer.o generic.o
 obj-$(CONFIG_ARCH_S3C24xx) += gpio-s3c24x0.o s3c24xx-clocks.o
 obj-$(CONFIG_S3C24XX_LOW_LEVEL_INIT) += lowlevel-init.o
diff --git a/arch/arm/mach-samsung/generic.c b/arch/arm/mach-samsung/generic.c
index 3f6e801..83222e1 100644
--- a/arch/arm/mach-samsung/generic.c
+++ b/arch/arm/mach-samsung/generic.c
@@ -76,39 +76,6 @@ uint32_t s3c24x0_get_memory_size(void)
 	return size;
 }
 
-static uint64_t s3c24xx_clocksource_read(void)
-{
-	/* note: its a down counter */
-	return 0xFFFF - readw(TCNTO4);
-}
-
-static struct clocksource cs = {
-	.read	= s3c24xx_clocksource_read,
-	.mask	= CLOCKSOURCE_MASK(16),
-	.shift	= 10,
-};
-
-static int clocksource_init (void)
-{
-	uint32_t p_clk = s3c_get_pclk();
-
-	writel(0x00000000, TCON);	/* stop all timers */
-	writel(0x00ffffff, TCFG0);	/* PCLK / (255 + 1) for timer 4 */
-	writel(0x00030000, TCFG1);	/* /16 */
-
-	writew(0xffff, TCNTB4);		/* reload value is TOP */
-
-	writel(0x00600000, TCON);	/* force a first reload */
-	writel(0x00400000, TCON);
-	writel(0x00500000, TCON);	/* enable timer 4 with auto reload */
-
-	cs.mult = clocksource_hz2mult(p_clk / ((255 + 1) * 16), cs.shift);
-	init_clock(&cs);
-
-	return 0;
-}
-core_initcall(clocksource_init);
-
 void __noreturn reset_cpu(unsigned long addr)
 {
 	/* Disable watchdog */
diff --git a/arch/arm/mach-samsung/s3c-timer.c b/arch/arm/mach-samsung/s3c-timer.c
new file mode 100644
index 0000000..2b0b38a
--- /dev/null
+++ b/arch/arm/mach-samsung/s3c-timer.c
@@ -0,0 +1,55 @@
+/*
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <init.h>
+#include <clock.h>
+#include <io.h>
+#include <mach/s3c-iomap.h>
+#include <mach/s3c-generic.h>
+
+static uint64_t s3c24xx_clocksource_read(void)
+{
+	/* note: its a down counter */
+	return 0xFFFF - readw(TCNTO4);
+}
+
+static struct clocksource cs = {
+	.read	= s3c24xx_clocksource_read,
+	.mask	= CLOCKSOURCE_MASK(16),
+	.shift	= 10,
+};
+
+static int clocksource_init(void)
+{
+	uint32_t p_clk = s3c_get_pclk();
+
+	writel(0x00000000, TCON);	/* stop all timers */
+	writel(0x00ffffff, TCFG0);	/* PCLK / (255 + 1) for timer 4 */
+	writel(0x00030000, TCFG1);	/* /16 */
+
+	writew(0xffff, TCNTB4);		/* reload value is TOP */
+
+	writel(0x00600000, TCON);	/* force a first reload */
+	writel(0x00400000, TCON);
+	writel(0x00500000, TCON);	/* enable timer 4 with auto reload */
+
+	cs.mult = clocksource_hz2mult(p_clk / ((255 + 1) * 16), cs.shift);
+	init_clock(&cs);
+
+	return 0;
+}
+core_initcall(clocksource_init);
-- 
1.7.7.3


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  parent reply	other threads:[~2012-01-02 11:44 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-02 11:43 [PATCH v2] Prepare to add more Samsung S3C CPUs to barebox Juergen Beisert
2012-01-02 11:43 ` [PATCH 01/14] MACH SAMSUNG: Rename the whole mach to add more CPUs in future Juergen Beisert
2012-01-02 11:43 ` [PATCH 02/14] MACH SAMSUNG/S3C: Do not compile S3C24xx's GPIO support unconditionally Juergen Beisert
2012-01-02 11:43 ` [PATCH 03/14] MACH SAMSUNG/S3C: Make it more generic for future updates Juergen Beisert
2012-01-02 11:43 ` [PATCH 04/14] MACH SAMSUNG/S3C: Use the correct CPU family name to reflect NAND driver's usage Juergen Beisert
2012-01-02 11:43 ` [PATCH 05/14] MACH SAMSUNG/S3C: Parts of the SDHC driver can be shared in the S3C CPU family Juergen Beisert
2012-01-02 11:43 ` [PATCH 06/14] MACH SAMSUNG/S3C: Reflect the CPU name the LCD driver is for Juergen Beisert
2012-01-02 11:43 ` [PATCH 07/14] MACH SAMSUNG/S3C: Separate S3C24XX clock management Juergen Beisert
2012-01-02 11:43 ` Juergen Beisert [this message]
2012-01-02 11:43 ` [PATCH 09/14] MACH SAMSUNG/S3C: Rename register macros to reflect the MACH they are valid for Juergen Beisert
2012-01-02 11:43 ` [PATCH 10/14] MACH SAMSUNG/S3C: Re-work the S3C family timer driver Juergen Beisert
2012-01-02 11:43 ` [PATCH 11/14] MACH SAMSUNG/S3C: Prepare watchdog unit to be shared in the S3C family Juergen Beisert
2012-01-02 11:44 ` [PATCH 12/14] MACH SAMSUNG/S3C: Unify the UART driver for the S3C family of CPUs Juergen Beisert
2012-01-02 11:44 ` [PATCH 13/14] MACH SAMSUNG/S3C: Re-work the memory detection and handling Juergen Beisert
2012-01-02 11:44 ` [PATCH 14/14] MACH SAMSUNG/S3C: Re-work the GPIO handling for S3C24xx CPUs Juergen Beisert
  -- strict thread matches above, loose matches on Subject: below --
2011-12-25 20:38 [PATCH] Prepare to add more Samsung S3C CPUs to barebox Juergen Beisert
2011-12-25 20:38 ` [PATCH 08/14] MACH SAMSUNG/S3C: Separate the clocksource for the S3C family Juergen Beisert
2011-11-26 20:22 [RFC] Prepare to add more Samsung S3C CPUs to barebox Juergen Beisert
2011-11-26 20:22 ` [PATCH 08/14] MACH SAMSUNG/S3C: Separate the clocksource for the S3C family Juergen Beisert

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