[ARM] OMAP2 SDRC: separate common OMAP2/3 code from OMAP2xxx code

[mv-sheeva.git] / arch / arm / mach-omap2 / sdrc.c

diff --git a/arch/arm/mach-omap2/sdrc.c b/arch/arm/mach-omap2/sdrc.c
new file mode 100644 (file)
index 0000000..24b54d5
--- /dev/null
+++ b/arch/arm/mach-omap2/sdrc.c
@@ -0,0 +1,57 @@
+/*
+ * SMS/SDRC (SDRAM controller) common code for OMAP2/3
+ *
+ * Copyright (C) 2005, 2008 Texas Instruments Inc.
+ * Copyright (C) 2005, 2008 Nokia Corporation
+ *
+ * Tony Lindgren <tony@atomide.com>
+ * Paul Walmsley
+ * Richard Woodruff <r-woodruff2@ti.com>
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <mach/common.h>
+#include <mach/clock.h>
+#include <mach/sram.h>
+
+#include "prm.h"
+
+#include <mach/sdrc.h>
+#include "sdrc.h"
+
+void __iomem *omap2_sdrc_base;
+void __iomem *omap2_sms_base;
+
+void __init omap2_set_globals_sdrc(struct omap_globals *omap2_globals)
+{
+       omap2_sdrc_base = omap2_globals->sdrc;
+       omap2_sms_base = omap2_globals->sms;
+}
+
+/* turn on smart idle modes for SDRAM scheduler and controller */
+void __init omap2_sdrc_init(void)
+{
+       u32 l;
+
+       l = sms_read_reg(SMS_SYSCONFIG);
+       l &= ~(0x3 << 3);
+       l |= (0x2 << 3);
+       sms_write_reg(l, SMS_SYSCONFIG);
+
+       l = sdrc_read_reg(SDRC_SYSCONFIG);
+       l &= ~(0x3 << 3);
+       l |= (0x2 << 3);
+       sdrc_write_reg(l, SDRC_SYSCONFIG);
+}