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authorH. Peter Anvin <hpa@zytor.com>2010-04-29 16:53:17 -0700
committerH. Peter Anvin <hpa@zytor.com>2010-04-29 16:53:17 -0700
commitd9c5841e22231e4e49fd0a1004164e6fce59b7a6 (patch)
treee1f589c46b3ff79bbe7b1b2469f6362f94576da6 /arch/arm/mach-omap2/clkt2xxx_osc.c
parentb701a47ba48b698976fb2fe05fb285b0edc1d26a (diff)
parent5967ed87ade85a421ef814296c3c7f182b08c225 (diff)
Merge branch 'x86/asm' into x86/atomic
Merge reason: Conflict between LOCK_PREFIX_HERE and relative alternatives pointers Resolved Conflicts: arch/x86/include/asm/alternative.h arch/x86/kernel/alternative.c Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/arm/mach-omap2/clkt2xxx_osc.c')
-rw-r--r--arch/arm/mach-omap2/clkt2xxx_osc.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clkt2xxx_osc.c b/arch/arm/mach-omap2/clkt2xxx_osc.c
new file mode 100644
index 00000000000..2167be84a5b
--- /dev/null
+++ b/arch/arm/mach-omap2/clkt2xxx_osc.c
@@ -0,0 +1,62 @@
+/*
+ * OMAP2xxx osc_clk-specific clock code
+ *
+ * Copyright (C) 2005-2008 Texas Instruments, Inc.
+ * Copyright (C) 2004-2010 Nokia Corporation
+ *
+ * Contacts:
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Paul Walmsley
+ *
+ * Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
+ * Gordon McNutt and RidgeRun, Inc.
+ *
+ * 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.
+ */
+#undef DEBUG
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <plat/clock.h>
+
+#include "clock.h"
+#include "clock2xxx.h"
+#include "prm.h"
+#include "prm-regbits-24xx.h"
+
+static int omap2_enable_osc_ck(struct clk *clk)
+{
+ u32 pcc;
+
+ pcc = __raw_readl(prcm_clksrc_ctrl);
+
+ __raw_writel(pcc & ~OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
+
+ return 0;
+}
+
+static void omap2_disable_osc_ck(struct clk *clk)
+{
+ u32 pcc;
+
+ pcc = __raw_readl(prcm_clksrc_ctrl);
+
+ __raw_writel(pcc | OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
+}
+
+const struct clkops clkops_oscck = {
+ .enable = omap2_enable_osc_ck,
+ .disable = omap2_disable_osc_ck,
+};
+
+unsigned long omap2_osc_clk_recalc(struct clk *clk)
+{
+ return omap2xxx_get_apll_clkin() * omap2xxx_get_sysclkdiv();
+}
+