ARM: OMAP2: Add common clock framework for 24xx and 34xx

This patch adds a common clock framework for 24xx and 34xx.
Note that this patch does not add it to Makefile until in
next patch. Some functions are modified from earlier 24xx
clock framework code.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
new file mode 100644
index 0000000..d9cc99c
--- /dev/null
+++ b/arch/arm/mach-omap2/clock.h
@@ -0,0 +1,73 @@
+/*
+ *  linux/arch/arm/mach-omap2/clock.h
+ *
+ *  Copyright (C) 2005 Texas Instruments Inc.
+ *  Richard Woodruff <r-woodruff2@ti.com>
+ *  Created for OMAP2.
+ *
+ *  Copyright (C) 2004 Nokia corporation
+ *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
+ *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
+ *
+ *  Copyright (C) 2007 Texas Instruments, Inc.
+ *  Copyright (C) 2007 Nokia Corporation
+ *  Paul Walmsley
+ *
+ * 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.
+ */
+
+#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
+#define __ARCH_ARM_MACH_OMAP2_CLOCK_H
+
+#include <asm/arch/clock.h>
+
+int omap2_clk_enable(struct clk *clk);
+void omap2_clk_disable(struct clk *clk);
+long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
+int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
+int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
+
+#ifdef CONFIG_OMAP_RESET_CLOCKS
+void omap2_clk_disable_unused(struct clk *clk);
+#else
+#define omap2_clk_disable_unused	NULL
+#endif
+
+void omap2_clksel_recalc(struct clk *clk);
+void omap2_init_clksel_parent(struct clk *clk);
+u32 omap2_clksel_get_divisor(struct clk *clk);
+u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
+				u32 *new_div);
+u32 omap2_clksel_to_divisor(struct clk *clk, u32 field_val);
+u32 omap2_divisor_to_clksel(struct clk *clk, u32 div);
+void omap2_fixed_divisor_recalc(struct clk *clk);
+long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
+int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
+u32 omap2_get_dpll_rate(struct clk *clk);
+int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);
+
+extern u8 cpu_mask;
+
+/* clksel_rate data common to 24xx/343x */
+static const struct clksel_rate gpt_32k_rates[] = {
+	 { .div = 1, .val = 0, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE },
+	 { .div = 0 }
+};
+
+static const struct clksel_rate gpt_sys_rates[] = {
+	 { .div = 1, .val = 1, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE },
+	 { .div = 0 }
+};
+
+static const struct clksel_rate gfx_l3_rates[] = {
+	{ .div = 1, .val = 1, .flags = RATE_IN_24XX | RATE_IN_343X },
+	{ .div = 2, .val = 2, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE },
+	{ .div = 3, .val = 3, .flags = RATE_IN_243X | RATE_IN_343X },
+	{ .div = 4, .val = 4, .flags = RATE_IN_243X | RATE_IN_343X },
+	{ .div = 0 }
+};
+
+
+#endif