arch/arm/mach-omap2/clock.h

   1 /*
   2  *  linux/arch/arm/mach-omap2/clock.h
   3  *
   4  *  Copyright (C) 2005 Texas Instruments Inc.
   5  *  Richard Woodruff <r-woodruff2@ti.com>
   6  *  Created for OMAP2.
   7  *
   8  *  Copyright (C) 2004 Nokia corporation
   9  *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
  10  *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
  11  *
  12  *  Copyright (C) 2007 Texas Instruments, Inc.
  13  *  Copyright (C) 2007 Nokia Corporation
  14  *  Paul Walmsley
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License version 2 as
  18  * published by the Free Software Foundation.
  19  */
  20
  21 #ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
  22 #define __ARCH_ARM_MACH_OMAP2_CLOCK_H
  23
  24 #include <asm/arch/clock.h>
  25
  26 int omap2_clk_enable(struct clk *clk);
  27 void omap2_clk_disable(struct clk *clk);
  28 long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
  29 int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
  30 int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
  31
  32 #ifdef CONFIG_OMAP_RESET_CLOCKS
  33 void omap2_clk_disable_unused(struct clk *clk);
  34 #else
  35 #define omap2_clk_disable_unused        NULL
  36 #endif
  37
  38 void omap2_clksel_recalc(struct clk *clk);
  39 void omap2_init_clksel_parent(struct clk *clk);
  40 u32 omap2_clksel_get_divisor(struct clk *clk);
  41 u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
  42                                 u32 *new_div);
  43 u32 omap2_clksel_to_divisor(struct clk *clk, u32 field_val);
  44 u32 omap2_divisor_to_clksel(struct clk *clk, u32 div);
  45 void omap2_fixed_divisor_recalc(struct clk *clk);
  46 long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
  47 int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
  48 u32 omap2_get_dpll_rate(struct clk *clk);
  49 int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name);
  50
  51 extern u8 cpu_mask;
  52
  53 /* clksel_rate data common to 24xx/343x */
  54 static const struct clksel_rate gpt_32k_rates[] = {
  55          { .div = 1, .val = 0, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE },
  56          { .div = 0 }
  57 };
  58
  59 static const struct clksel_rate gpt_sys_rates[] = {
  60          { .div = 1, .val = 1, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE },
  61          { .div = 0 }
  62 };
  63
  64 static const struct clksel_rate gfx_l3_rates[] = {
  65         { .div = 1, .val = 1, .flags = RATE_IN_24XX | RATE_IN_343X },
  66         { .div = 2, .val = 2, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE },
  67         { .div = 3, .val = 3, .flags = RATE_IN_243X | RATE_IN_343X },
  68         { .div = 4, .val = 4, .flags = RATE_IN_243X | RATE_IN_343X },
  69         { .div = 0 }
  70 };
  71
  72
  73 #endif