[xburst] Export clock states through debugfs

[openwrt/svn-archive/archive.git] / target / linux / xburst / files-2.6.32 / arch / mips / jz4740 / clock.h

diff --git a/target/linux/xburst/files-2.6.32/arch/mips/jz4740/clock.h b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/clock.h
new file mode 100644 (file)
index 0000000..88ce07d
--- /dev/null
+++ b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/clock.h
@@ -0,0 +1,62 @@
+/*
+ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ *     JZ4740 SoC clock support
+ *
+ *  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.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __JZ4740_CLOCK_H__
+#define __JZ4740_CLOCK_H__
+
+struct clk_ops {
+       unsigned long (*get_rate)(struct clk* clk);
+       unsigned long (*round_rate)(struct clk *clk, unsigned long rate);
+       int (*set_rate)(struct clk* clk, unsigned long rate);
+       int (*enable)(struct clk* clk);
+       int (*disable)(struct clk* clk);
+       int (*is_enabled)(struct clk* clk);
+
+       int (*set_parent)(struct clk* clk, struct clk *parent);
+
+};
+
+struct clk {
+       const char *name;
+       struct clk* parent;
+
+       uint32_t gate_bit;
+
+       const struct clk_ops *ops;
+
+       struct list_head list;
+
+#ifdef CONFIG_DEBUG_FS
+       struct dentry *debugfs_entry;
+       struct dentry *debugfs_parent_entry;
+#endif
+
+};
+
+#define JZ4740_CLK_NOT_GATED ((uint32_t)-1)
+
+int clk_is_enabled(struct clk *clk);
+
+#ifdef CONFIG_DEBUG_FS
+void jz4740_clock_debugfs_init(void);
+void jz4740_clock_debugfs_add_clk(struct clk *clk);
+void jz4740_clock_debugfs_update_parent(struct clk *clk);
+#else
+static inline void jz4740_clock_debugfs_init(void) {};
+static inline void jz4740_clock_debugfs_add_clk(struct clk *clk) {};
+static inline void jz4740_clock_debugfs_update_parent(struct clk *clk) {};
+#endif
+
+#endif