initial_commit

1 files changed, 85 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/include/mach/clock.h b/arch/arm/plat-mxc/include/mach/clock.h
new file mode 100755
index 00000000..e150579e
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/clock.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2005-2012 Freescale Semiconductor, Inc.
+ * 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 __ASM_ARCH_MXC_CLOCK_H__
+#define __ASM_ARCH_MXC_CLOCK_H__
+
+#ifndef __ASSEMBLY__
+#include <linux/list.h>
+
+#define CLK_NAME_LEN 32
+struct module;
+
+struct clk {
+#ifdef CONFIG_CLK_DEBUG
+	char name[CLK_NAME_LEN];
+	struct dentry           *dentry;
+#endif
+	int id;
+	/* Source clock this clk depends on */
+	struct clk *parent;
+	/* Secondary clock to enable/disable with this clock */
+	struct clk *secondary;
+	/* 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_get_usecount(struct clk *clk);
+
+/* Clock flags */
+#define RATE_PROPAGATES		(1 << 0)	/* Program children too */
+#define ALWAYS_ENABLED		(1 << 1)	/* Clock cannot be disabled */
+#define RATE_FIXED		(1 << 2)	/* Fixed clock rate */
+#define CPU_FREQ_TRIG_UPDATE	(1 << 3)	/* CPUFREQ trig update */
+#define AHB_HIGH_SET_POINT	(1 << 4)	/* Requires max AHB clock */
+#define AHB_MED_SET_POINT	(1 << 5)	/* Requires med AHB clock */
+#define AHB_AUDIO_SET_POINT	(1 << 6)	/* Requires LOW AHB, but higher DDR clock */
+
+unsigned long mxc_decode_pll(unsigned int pll, u32 f_ref);
+
+#ifdef CONFIG_CLK_DEBUG
+void clk_debug_register(struct clk *clk);
+#else
+static inline void clk_debug_register(struct clk *clk) {}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ASM_ARCH_MXC_CLOCK_H__ */