From: Koen Martens <linuxarm@metro.cx>
To: linux-arm-kernel@lists.arm.linux.org.uk, ben@simtec.co.uk,
linux-kernel@vger.kernel.org
Subject: [patch 12/14] s3c2412/s3c2413 support
Date: Fri, 03 Mar 2006 12:07:10 +0100 [thread overview]
Message-ID: <4408235E.4090406@metro.cx> (raw)
Start of s3c2412 dsc support.
Signed-off-by: Koen Martens <gmc@sonologic.nl>
--- linux-2.6.15.4/arch/arm/mach-s3c2410/s3c2412-dsc.c 1970-01-01
01:00:00.000000000 +0100
+++ golinux/arch/arm/mach-s3c2410/s3c2412-dsc.c 2006-02-27
17:12:40.000000000 +0100
@@ -0,0 +1,60 @@
+/* linux/arch/arm/mach-s3c2410/s3c2440-dsc.c
+ *
+ * Copyright (c) 2004-2005 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Samsung S3C2412 Drive Strength Control support
+ *
+ * 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.
+ *
+ * Modifications:
+ * 29-Aug-2004 BJD Start of drive-strength control
+ * 09-Nov-2004 BJD Added symbol export
+ * 11-Jan-2005 BJD Include fix
+ * 27-Feb-2006 KM Start of S3C2412 support
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-dsc.h>
+
+#include "cpu.h"
+#include "s3c2412.h"
+
+int s3c2412_set_dsc(unsigned int pin, unsigned int value)
+{
+ void __iomem *base;
+ unsigned long val;
+ unsigned long flags;
+ unsigned long mask;
+
+ base = (pin & S3C2412_SELECT_DSC1) ? S3C2412_DSC1 : S3C2412_DSC0;
+ mask = 3 << S3C2440_DSC_GETSHIFT(pin);
+
+ local_irq_save(flags);
+
+ val = __raw_readl(base);
+ val &= ~mask;
+ val |= value & mask;
+ __raw_writel(val, base);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+EXPORT_SYMBOL(s3c2412_set_dsc);
--
K.F.J. Martens, Sonologic, http://www.sonologic.nl/
Networking, hosting, embedded systems, unix, artificial intelligence.
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reply other threads:[~2006-03-03 11:09 UTC|newest]
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