Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / arm / mach-mxs / include / mach / clock.h

diff --git a/arch/arm/mach-mxs/include/mach/clock.h b/arch/arm/mach-mxs/include/mach/clock.h
new file mode 100644 (file)
index 0000000..592c9ab
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/clock.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+
+#ifndef __MACH_MXS_CLOCK_H__
+#define __MACH_MXS_CLOCK_H__
+
+#ifndef __ASSEMBLY__
+#include <linux/list.h>
+
+struct module;
+
+struct clk {
+       int id;
+       /* Source clock this clk depends on */
+       struct clk *parent;
+       /* Reference count of clock enable/disable */
+       __s8 usecount;
+       /* Register bit position for clock's enable/disable control. */
+       u8 enable_shift;
+       /* Register address for clock's enable/disable control. */
+       void __iomem *enable_reg;
+       u32 flags;
+       /* get the current clock rate (always a fresh value) */
+       unsigned long (*get_rate) (struct clk *);
+       /* Function ptr to set the clock to a new rate. The rate must match a
+          supported rate returned from round_rate. Leave blank if clock is not
+          programmable */
+       int (*set_rate) (struct clk *, unsigned long);
+       /* Function ptr to round the requested clock rate to the nearest
+          supported rate that is less than or equal to the requested rate. */
+       unsigned long (*round_rate) (struct clk *, unsigned long);
+       /* Function ptr to enable the clock. Leave blank if clock can not
+          be gated. */
+       int (*enable) (struct clk *);
+       /* Function ptr to disable the clock. Leave blank if clock can not
+          be gated. */
+       void (*disable) (struct clk *);
+       /* Function ptr to set the parent clock of the clock. */
+       int (*set_parent) (struct clk *, struct clk *);
+};
+
+int clk_register(struct clk *clk);
+void clk_unregister(struct clk *clk);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __MACH_MXS_CLOCK_H__ */