Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-omap2/clock.h |
| 3 | * |
Paul Walmsley | d8a9445 | 2009-12-08 16:21:29 -0700 | [diff] [blame] | 4 | * Copyright (C) 2005-2009 Texas Instruments, Inc. |
Paul Walmsley | 530e544 | 2011-02-25 15:39:28 -0700 | [diff] [blame] | 5 | * Copyright (C) 2004-2011 Nokia Corporation |
Tony Lindgren | a16e970 | 2008-03-18 11:56:39 +0200 | [diff] [blame] | 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 | |
Paul Walmsley | 12706c5 | 2011-07-10 05:57:06 -0600 | [diff] [blame] | 19 | #include <linux/kernel.h> |
| 20 | |
Tony Lindgren | ce491cf | 2009-10-20 09:40:47 -0700 | [diff] [blame] | 21 | #include <plat/clock.h> |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 22 | |
Russell King | c0bf313 | 2009-02-19 13:29:22 +0000 | [diff] [blame] | 23 | /* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */ |
| 24 | #define CORE_CLK_SRC_32K 0x0 |
| 25 | #define CORE_CLK_SRC_DPLL 0x1 |
| 26 | #define CORE_CLK_SRC_DPLL_X2 0x2 |
| 27 | |
| 28 | /* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */ |
| 29 | #define OMAP2XXX_EN_DPLL_LPBYPASS 0x1 |
| 30 | #define OMAP2XXX_EN_DPLL_FRBYPASS 0x2 |
| 31 | #define OMAP2XXX_EN_DPLL_LOCKED 0x3 |
| 32 | |
| 33 | /* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */ |
| 34 | #define OMAP3XXX_EN_DPLL_LPBYPASS 0x5 |
| 35 | #define OMAP3XXX_EN_DPLL_FRBYPASS 0x6 |
| 36 | #define OMAP3XXX_EN_DPLL_LOCKED 0x7 |
| 37 | |
Rajendra Nayak | 16975a7 | 2009-12-08 18:47:16 -0700 | [diff] [blame] | 38 | /* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */ |
| 39 | #define OMAP4XXX_EN_DPLL_MNBYPASS 0x4 |
| 40 | #define OMAP4XXX_EN_DPLL_LPBYPASS 0x5 |
| 41 | #define OMAP4XXX_EN_DPLL_FRBYPASS 0x6 |
| 42 | #define OMAP4XXX_EN_DPLL_LOCKED 0x7 |
| 43 | |
Rajendra Nayak | a1391d2 | 2009-12-08 18:47:16 -0700 | [diff] [blame] | 44 | /* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */ |
| 45 | #define DPLL_LOW_POWER_STOP 0x1 |
| 46 | #define DPLL_LOW_POWER_BYPASS 0x5 |
| 47 | #define DPLL_LOCKED 0x7 |
| 48 | |
Richard Woodruff | 358965d | 2010-02-22 22:09:08 -0700 | [diff] [blame] | 49 | /* DPLL Type and DCO Selection Flags */ |
| 50 | #define DPLL_J_TYPE 0x1 |
Richard Woodruff | 358965d | 2010-02-22 22:09:08 -0700 | [diff] [blame] | 51 | |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 52 | int omap2_clk_enable(struct clk *clk); |
| 53 | void omap2_clk_disable(struct clk *clk); |
| 54 | long omap2_clk_round_rate(struct clk *clk, unsigned long rate); |
| 55 | int omap2_clk_set_rate(struct clk *clk, unsigned long rate); |
| 56 | int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent); |
Paul Walmsley | 88b8ba9 | 2008-07-03 12:24:46 +0300 | [diff] [blame] | 57 | long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate); |
Rajendra Nayak | a1391d2 | 2009-12-08 18:47:16 -0700 | [diff] [blame] | 58 | unsigned long omap3_dpll_recalc(struct clk *clk); |
| 59 | unsigned long omap3_clkoutx2_recalc(struct clk *clk); |
| 60 | void omap3_dpll_allow_idle(struct clk *clk); |
| 61 | void omap3_dpll_deny_idle(struct clk *clk); |
| 62 | u32 omap3_dpll_autoidle_read(struct clk *clk); |
| 63 | int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate); |
| 64 | int omap3_noncore_dpll_enable(struct clk *clk); |
| 65 | void omap3_noncore_dpll_disable(struct clk *clk); |
Rajendra Nayak | 97f6789 | 2011-02-25 15:49:01 -0700 | [diff] [blame] | 66 | int omap4_dpllmx_gatectrl_read(struct clk *clk); |
| 67 | void omap4_dpllmx_allow_gatectrl(struct clk *clk); |
| 68 | void omap4_dpllmx_deny_gatectrl(struct clk *clk); |
Mike Turquette | a1900f2 | 2011-10-07 00:52:58 -0600 | [diff] [blame] | 69 | long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate); |
| 70 | unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 71 | |
| 72 | #ifdef CONFIG_OMAP_RESET_CLOCKS |
| 73 | void omap2_clk_disable_unused(struct clk *clk); |
| 74 | #else |
| 75 | #define omap2_clk_disable_unused NULL |
| 76 | #endif |
| 77 | |
Paul Walmsley | 333943b | 2008-08-19 11:08:45 +0300 | [diff] [blame] | 78 | void omap2_init_clk_clkdm(struct clk *clk); |
Paul Walmsley | 12706c5 | 2011-07-10 05:57:06 -0600 | [diff] [blame] | 79 | void __init omap2_clk_disable_clkdm_control(void); |
Paul Walmsley | 435699d | 2010-05-18 18:40:24 -0600 | [diff] [blame] | 80 | |
| 81 | /* clkt_clksel.c public functions */ |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 82 | u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate, |
| 83 | u32 *new_div); |
Paul Walmsley | 435699d | 2010-05-18 18:40:24 -0600 | [diff] [blame] | 84 | void omap2_init_clksel_parent(struct clk *clk); |
| 85 | unsigned long omap2_clksel_recalc(struct clk *clk); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 86 | long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate); |
| 87 | int omap2_clksel_set_rate(struct clk *clk, unsigned long rate); |
Paul Walmsley | df791b3 | 2010-01-26 20:13:04 -0700 | [diff] [blame] | 88 | int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent); |
Paul Walmsley | 435699d | 2010-05-18 18:40:24 -0600 | [diff] [blame] | 89 | |
Paul Walmsley | 530e544 | 2011-02-25 15:39:28 -0700 | [diff] [blame] | 90 | /* clkt_iclk.c public functions */ |
| 91 | extern void omap2_clkt_iclk_allow_idle(struct clk *clk); |
| 92 | extern void omap2_clkt_iclk_deny_idle(struct clk *clk); |
| 93 | |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 94 | u32 omap2_get_dpll_rate(struct clk *clk); |
Rajendra Nayak | 911bd73 | 2009-12-08 18:47:17 -0700 | [diff] [blame] | 95 | void omap2_init_dpll_parent(struct clk *clk); |
Paul Walmsley | 435699d | 2010-05-18 18:40:24 -0600 | [diff] [blame] | 96 | |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 97 | int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name); |
Tony Lindgren | 56213ca | 2010-02-12 12:26:46 -0800 | [diff] [blame] | 98 | |
| 99 | |
| 100 | #ifdef CONFIG_ARCH_OMAP2 |
| 101 | void omap2xxx_clk_prepare_for_reboot(void); |
| 102 | #else |
| 103 | static inline void omap2xxx_clk_prepare_for_reboot(void) |
| 104 | { |
| 105 | } |
| 106 | #endif |
| 107 | |
| 108 | #ifdef CONFIG_ARCH_OMAP3 |
| 109 | void omap3_clk_prepare_for_reboot(void); |
| 110 | #else |
| 111 | static inline void omap3_clk_prepare_for_reboot(void) |
| 112 | { |
| 113 | } |
| 114 | #endif |
| 115 | |
| 116 | #ifdef CONFIG_ARCH_OMAP4 |
| 117 | void omap4_clk_prepare_for_reboot(void); |
| 118 | #else |
| 119 | static inline void omap4_clk_prepare_for_reboot(void) |
| 120 | { |
| 121 | } |
| 122 | #endif |
| 123 | |
Paul Walmsley | 72350b2 | 2009-07-24 19:44:03 -0600 | [diff] [blame] | 124 | int omap2_dflt_clk_enable(struct clk *clk); |
| 125 | void omap2_dflt_clk_disable(struct clk *clk); |
| 126 | void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg, |
| 127 | u8 *other_bit); |
| 128 | void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg, |
Ranjith Lohithakshan | 419cc97 | 2010-02-24 12:05:54 -0700 | [diff] [blame] | 129 | u8 *idlest_bit, u8 *idlest_val); |
Paul Walmsley | 4d30e82 | 2010-02-22 22:09:36 -0700 | [diff] [blame] | 130 | int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name); |
| 131 | void omap2_clk_print_new_rates(const char *hfclkin_ck_name, |
| 132 | const char *core_ck_name, |
| 133 | const char *mpu_ck_name); |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 134 | |
Afzal Mohammed | 9954119 | 2011-12-13 10:46:43 -0800 | [diff] [blame] | 135 | extern u16 cpu_mask; |
Paul Walmsley | d8a9445 | 2009-12-08 16:21:29 -0700 | [diff] [blame] | 136 | |
Russell King | b36ee72 | 2008-11-04 17:59:52 +0000 | [diff] [blame] | 137 | extern const struct clkops clkops_omap2_dflt_wait; |
Santosh Shilimkar | 7c43d54 | 2010-02-22 22:09:40 -0700 | [diff] [blame] | 138 | extern const struct clkops clkops_dummy; |
Russell King | bc51da4 | 2008-11-04 18:59:32 +0000 | [diff] [blame] | 139 | extern const struct clkops clkops_omap2_dflt; |
Russell King | b36ee72 | 2008-11-04 17:59:52 +0000 | [diff] [blame] | 140 | |
Paul Walmsley | 82e9bd5 | 2009-12-08 16:18:47 -0700 | [diff] [blame] | 141 | extern struct clk_functions omap2_clk_functions; |
Paul Walmsley | d8a9445 | 2009-12-08 16:21:29 -0700 | [diff] [blame] | 142 | extern struct clk *vclk, *sclk; |
Paul Walmsley | 82e9bd5 | 2009-12-08 16:18:47 -0700 | [diff] [blame] | 143 | |
Paul Walmsley | d8a9445 | 2009-12-08 16:21:29 -0700 | [diff] [blame] | 144 | extern const struct clksel_rate gpt_32k_rates[]; |
| 145 | extern const struct clksel_rate gpt_sys_rates[]; |
| 146 | extern const struct clksel_rate gfx_l3_rates[]; |
Paul Walmsley | 2241139 | 2011-02-25 15:52:04 -0700 | [diff] [blame] | 147 | extern const struct clksel_rate dsp_ick_rates[]; |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 148 | |
Paul Walmsley | 530e544 | 2011-02-25 15:39:28 -0700 | [diff] [blame] | 149 | extern const struct clkops clkops_omap2_iclk_dflt_wait; |
| 150 | extern const struct clkops clkops_omap2_iclk_dflt; |
| 151 | extern const struct clkops clkops_omap2_iclk_idle_only; |
Paul Walmsley | e892b25 | 2011-02-25 15:39:29 -0700 | [diff] [blame] | 152 | extern const struct clkops clkops_omap2_mdmclk_dflt_wait; |
Paul Walmsley | 0fd0c21 | 2011-02-25 15:49:53 -0700 | [diff] [blame] | 153 | extern const struct clkops clkops_omap2xxx_dpll_ops; |
Paul Walmsley | 657ebfa | 2010-02-22 22:09:20 -0700 | [diff] [blame] | 154 | extern const struct clkops clkops_omap3_noncore_dpll_ops; |
Rajendra Nayak | 6c6f5a7 | 2011-02-25 15:49:00 -0700 | [diff] [blame] | 155 | extern const struct clkops clkops_omap3_core_dpll_ops; |
Rajendra Nayak | 70db8a6 | 2011-02-25 15:49:02 -0700 | [diff] [blame] | 156 | extern const struct clkops clkops_omap4_dpllmx_ops; |
Paul Walmsley | 657ebfa | 2010-02-22 22:09:20 -0700 | [diff] [blame] | 157 | |
Paul Walmsley | 571efa0 | 2012-05-29 15:26:40 +0530 | [diff] [blame] | 158 | /* clksel_rate blocks shared between OMAP44xx and AM33xx */ |
| 159 | extern const struct clksel_rate div_1_0_rates[]; |
| 160 | extern const struct clksel_rate div_1_1_rates[]; |
| 161 | extern const struct clksel_rate div_1_2_rates[]; |
| 162 | extern const struct clksel_rate div_1_3_rates[]; |
| 163 | extern const struct clksel_rate div_1_4_rates[]; |
| 164 | extern const struct clksel_rate div31_1to31_rates[]; |
| 165 | |
| 166 | /* clocks shared between various OMAP SoCs */ |
| 167 | extern struct clk virt_19200000_ck; |
| 168 | extern struct clk virt_26000000_ck; |
| 169 | |
Vaibhav Hiremath | e30384a | 2012-05-29 15:26:41 +0530 | [diff] [blame^] | 170 | extern int am33xx_clk_init(void); |
| 171 | |
Paul Walmsley | 543d937 | 2008-03-18 10:22:06 +0200 | [diff] [blame] | 172 | #endif |