Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-omap2/clock.h |
| 3 | * |
Tony Lindgren | a16e970 | 2008-03-18 11:56:39 +0200 | [diff] [blame] | 4 | * Copyright (C) 2005-2008 Texas Instruments, Inc. |
| 5 | * Copyright (C) 2004-2008 Nokia Corporation |
| 6 | * |
| 7 | * Contacts: |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 8 | * Richard Woodruff <r-woodruff2@ti.com> |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 9 | * Paul Walmsley |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | */ |
| 15 | |
| 16 | #ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H |
| 17 | #define __ARCH_ARM_MACH_OMAP2_CLOCK_H |
| 18 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 19 | #include <mach/clock.h> |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 20 | |
Paul Walmsley | 88b8ba9 | 2008-07-03 12:24:46 +0300 | [diff] [blame] | 21 | /* The maximum error between a target DPLL rate and the rounded rate in Hz */ |
| 22 | #define DEFAULT_DPLL_RATE_TOLERANCE 50000 |
| 23 | |
Tony Lindgren | 646e3ed | 2008-10-06 15:49:36 +0300 | [diff] [blame] | 24 | int omap2_clk_init(void); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 25 | int omap2_clk_enable(struct clk *clk); |
| 26 | void omap2_clk_disable(struct clk *clk); |
| 27 | long omap2_clk_round_rate(struct clk *clk, unsigned long rate); |
| 28 | int omap2_clk_set_rate(struct clk *clk, unsigned long rate); |
| 29 | int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent); |
Paul Walmsley | fecb494 | 2009-01-27 19:12:50 -0700 | [diff] [blame] | 30 | int omap2_dpll_set_rate_tolerance(struct clk *clk, unsigned int tolerance); |
Paul Walmsley | 88b8ba9 | 2008-07-03 12:24:46 +0300 | [diff] [blame] | 31 | long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 32 | |
| 33 | #ifdef CONFIG_OMAP_RESET_CLOCKS |
| 34 | void omap2_clk_disable_unused(struct clk *clk); |
| 35 | #else |
| 36 | #define omap2_clk_disable_unused NULL |
| 37 | #endif |
| 38 | |
Russell King | 8b9dbc1 | 2009-02-12 10:12:59 +0000 | [diff] [blame^] | 39 | unsigned long omap2_clksel_recalc(struct clk *clk); |
Paul Walmsley | 333943b | 2008-08-19 11:08:45 +0300 | [diff] [blame] | 40 | void omap2_init_clk_clkdm(struct clk *clk); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 41 | void omap2_init_clksel_parent(struct clk *clk); |
| 42 | u32 omap2_clksel_get_divisor(struct clk *clk); |
| 43 | u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate, |
| 44 | u32 *new_div); |
| 45 | u32 omap2_clksel_to_divisor(struct clk *clk, u32 field_val); |
| 46 | u32 omap2_divisor_to_clksel(struct clk *clk, u32 div); |
Russell King | 8b9dbc1 | 2009-02-12 10:12:59 +0000 | [diff] [blame^] | 47 | unsigned long omap2_fixed_divisor_recalc(struct clk *clk); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 48 | long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate); |
| 49 | int omap2_clksel_set_rate(struct clk *clk, unsigned long rate); |
| 50 | u32 omap2_get_dpll_rate(struct clk *clk); |
| 51 | int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name); |
Tony Lindgren | ff00fcc | 2008-07-03 12:24:44 +0300 | [diff] [blame] | 52 | void omap2_clk_prepare_for_reboot(void); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 53 | |
Russell King | b36ee72 | 2008-11-04 17:59:52 +0000 | [diff] [blame] | 54 | extern const struct clkops clkops_omap2_dflt_wait; |
Russell King | bc51da4 | 2008-11-04 18:59:32 +0000 | [diff] [blame] | 55 | extern const struct clkops clkops_omap2_dflt; |
Russell King | b36ee72 | 2008-11-04 17:59:52 +0000 | [diff] [blame] | 56 | |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 57 | extern u8 cpu_mask; |
| 58 | |
| 59 | /* clksel_rate data common to 24xx/343x */ |
| 60 | static const struct clksel_rate gpt_32k_rates[] = { |
| 61 | { .div = 1, .val = 0, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE }, |
| 62 | { .div = 0 } |
| 63 | }; |
| 64 | |
| 65 | static const struct clksel_rate gpt_sys_rates[] = { |
| 66 | { .div = 1, .val = 1, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE }, |
| 67 | { .div = 0 } |
| 68 | }; |
| 69 | |
| 70 | static const struct clksel_rate gfx_l3_rates[] = { |
| 71 | { .div = 1, .val = 1, .flags = RATE_IN_24XX | RATE_IN_343X }, |
| 72 | { .div = 2, .val = 2, .flags = RATE_IN_24XX | RATE_IN_343X | DEFAULT_RATE }, |
| 73 | { .div = 3, .val = 3, .flags = RATE_IN_243X | RATE_IN_343X }, |
| 74 | { .div = 4, .val = 4, .flags = RATE_IN_243X | RATE_IN_343X }, |
| 75 | { .div = 0 } |
| 76 | }; |
| 77 | |
| 78 | |
| 79 | #endif |