forked from luck/tmp_suning_uos_patched
601155b04c
DEFINE_STRUCT_CLK does not have the capability to set flags, define DEFINE_STRUCT_CLK_FLAGS to handle flags. This is needed to add SET_RATE_PARENT flag in statically defined lcd clock in am335x. Signed-off-by: Afzal Mohammed <afzal@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
484 lines
17 KiB
C
484 lines
17 KiB
C
/*
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* linux/arch/arm/mach-omap2/clock.h
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*
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* Copyright (C) 2005-2009 Texas Instruments, Inc.
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* Copyright (C) 2004-2011 Nokia Corporation
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*
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* Contacts:
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* Richard Woodruff <r-woodruff2@ti.com>
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* Paul Walmsley
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
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#define __ARCH_ARM_MACH_OMAP2_CLOCK_H
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/clkdev.h>
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#include <linux/clk-provider.h>
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struct omap_clk {
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u16 cpu;
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struct clk_lookup lk;
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};
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#define CLK(dev, con, ck, cp) \
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{ \
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.cpu = cp, \
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.lk = { \
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.dev_id = dev, \
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.con_id = con, \
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.clk = ck, \
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}, \
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}
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/* Platform flags for the clkdev-OMAP integration code */
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#define CK_242X (1 << 0)
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#define CK_243X (1 << 1) /* 243x, 253x */
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#define CK_3430ES1 (1 << 2) /* 34xxES1 only */
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#define CK_3430ES2PLUS (1 << 3) /* 34xxES2, ES3, non-Sitara 35xx only */
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#define CK_AM35XX (1 << 4) /* Sitara AM35xx */
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#define CK_36XX (1 << 5) /* 36xx/37xx-specific clocks */
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#define CK_443X (1 << 6)
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#define CK_TI816X (1 << 7)
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#define CK_446X (1 << 8)
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#define CK_AM33XX (1 << 9) /* AM33xx specific clocks */
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#define CK_34XX (CK_3430ES1 | CK_3430ES2PLUS)
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#define CK_3XXX (CK_34XX | CK_AM35XX | CK_36XX)
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struct clockdomain;
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#define to_clk_hw_omap(_hw) container_of(_hw, struct clk_hw_omap, hw)
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#define DEFINE_STRUCT_CLK(_name, _parent_array_name, _clkops_name) \
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static struct clk _name = { \
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.name = #_name, \
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.hw = &_name##_hw.hw, \
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.parent_names = _parent_array_name, \
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.num_parents = ARRAY_SIZE(_parent_array_name), \
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.ops = &_clkops_name, \
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};
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#define DEFINE_STRUCT_CLK_FLAGS(_name, _parent_array_name, \
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_clkops_name, _flags) \
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static struct clk _name = { \
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.name = #_name, \
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.hw = &_name##_hw.hw, \
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.parent_names = _parent_array_name, \
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.num_parents = ARRAY_SIZE(_parent_array_name), \
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.ops = &_clkops_name, \
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.flags = _flags, \
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};
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#define DEFINE_STRUCT_CLK_HW_OMAP(_name, _clkdm_name) \
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static struct clk_hw_omap _name##_hw = { \
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.hw = { \
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.clk = &_name, \
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}, \
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.clkdm_name = _clkdm_name, \
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};
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#define DEFINE_CLK_OMAP_MUX(_name, _clkdm_name, _clksel, \
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_clksel_reg, _clksel_mask, \
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_parent_names, _ops) \
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static struct clk _name; \
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static struct clk_hw_omap _name##_hw = { \
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.hw = { \
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.clk = &_name, \
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}, \
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.clksel = _clksel, \
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.clksel_reg = _clksel_reg, \
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.clksel_mask = _clksel_mask, \
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.clkdm_name = _clkdm_name, \
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}; \
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DEFINE_STRUCT_CLK(_name, _parent_names, _ops);
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#define DEFINE_CLK_OMAP_MUX_GATE(_name, _clkdm_name, _clksel, \
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_clksel_reg, _clksel_mask, \
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_enable_reg, _enable_bit, \
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_hwops, _parent_names, _ops) \
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static struct clk _name; \
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static struct clk_hw_omap _name##_hw = { \
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.hw = { \
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.clk = &_name, \
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}, \
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.ops = _hwops, \
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.enable_reg = _enable_reg, \
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.enable_bit = _enable_bit, \
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.clksel = _clksel, \
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.clksel_reg = _clksel_reg, \
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.clksel_mask = _clksel_mask, \
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.clkdm_name = _clkdm_name, \
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}; \
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DEFINE_STRUCT_CLK(_name, _parent_names, _ops);
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#define DEFINE_CLK_OMAP_HSDIVIDER(_name, _parent_name, \
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_parent_ptr, _flags, \
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_clksel_reg, _clksel_mask) \
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static const struct clksel _name##_div[] = { \
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{ \
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.parent = _parent_ptr, \
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.rates = div31_1to31_rates \
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}, \
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{ .parent = NULL }, \
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}; \
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static struct clk _name; \
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static const char *_name##_parent_names[] = { \
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_parent_name, \
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}; \
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static struct clk_hw_omap _name##_hw = { \
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.hw = { \
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.clk = &_name, \
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}, \
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.clksel = _name##_div, \
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.clksel_reg = _clksel_reg, \
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.clksel_mask = _clksel_mask, \
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.ops = &clkhwops_omap4_dpllmx, \
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}; \
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DEFINE_STRUCT_CLK(_name, _name##_parent_names, omap_hsdivider_ops);
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/* struct clksel_rate.flags possibilities */
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#define RATE_IN_242X (1 << 0)
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#define RATE_IN_243X (1 << 1)
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#define RATE_IN_3430ES1 (1 << 2) /* 3430ES1 rates only */
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#define RATE_IN_3430ES2PLUS (1 << 3) /* 3430 ES >= 2 rates only */
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#define RATE_IN_36XX (1 << 4)
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#define RATE_IN_4430 (1 << 5)
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#define RATE_IN_TI816X (1 << 6)
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#define RATE_IN_4460 (1 << 7)
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#define RATE_IN_AM33XX (1 << 8)
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#define RATE_IN_TI814X (1 << 9)
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#define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)
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#define RATE_IN_34XX (RATE_IN_3430ES1 | RATE_IN_3430ES2PLUS)
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#define RATE_IN_3XXX (RATE_IN_34XX | RATE_IN_36XX)
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#define RATE_IN_44XX (RATE_IN_4430 | RATE_IN_4460)
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/* RATE_IN_3430ES2PLUS_36XX includes 34xx/35xx with ES >=2, and all 36xx/37xx */
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#define RATE_IN_3430ES2PLUS_36XX (RATE_IN_3430ES2PLUS | RATE_IN_36XX)
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/**
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* struct clksel_rate - register bitfield values corresponding to clk divisors
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* @val: register bitfield value (shifted to bit 0)
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* @div: clock divisor corresponding to @val
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* @flags: (see "struct clksel_rate.flags possibilities" above)
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*
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* @val should match the value of a read from struct clk.clksel_reg
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* AND'ed with struct clk.clksel_mask, shifted right to bit 0.
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*
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* @div is the divisor that should be applied to the parent clock's rate
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* to produce the current clock's rate.
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*/
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struct clksel_rate {
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u32 val;
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u8 div;
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u16 flags;
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};
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/**
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* struct clksel - available parent clocks, and a pointer to their divisors
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* @parent: struct clk * to a possible parent clock
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* @rates: available divisors for this parent clock
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*
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* A struct clksel is always associated with one or more struct clks
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* and one or more struct clksel_rates.
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*/
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struct clksel {
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struct clk *parent;
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const struct clksel_rate *rates;
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};
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/**
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* struct dpll_data - DPLL registers and integration data
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* @mult_div1_reg: register containing the DPLL M and N bitfields
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* @mult_mask: mask of the DPLL M bitfield in @mult_div1_reg
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* @div1_mask: mask of the DPLL N bitfield in @mult_div1_reg
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* @clk_bypass: struct clk pointer to the clock's bypass clock input
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* @clk_ref: struct clk pointer to the clock's reference clock input
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* @control_reg: register containing the DPLL mode bitfield
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* @enable_mask: mask of the DPLL mode bitfield in @control_reg
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* @last_rounded_rate: cache of the last rate result of omap2_dpll_round_rate()
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* @last_rounded_m: cache of the last M result of omap2_dpll_round_rate()
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* @last_rounded_m4xen: cache of the last M4X result of
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* omap4_dpll_regm4xen_round_rate()
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* @last_rounded_lpmode: cache of the last lpmode result of
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* omap4_dpll_lpmode_recalc()
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* @max_multiplier: maximum valid non-bypass multiplier value (actual)
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* @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
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* @min_divider: minimum valid non-bypass divider value (actual)
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* @max_divider: maximum valid non-bypass divider value (actual)
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* @modes: possible values of @enable_mask
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* @autoidle_reg: register containing the DPLL autoidle mode bitfield
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* @idlest_reg: register containing the DPLL idle status bitfield
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* @autoidle_mask: mask of the DPLL autoidle mode bitfield in @autoidle_reg
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* @freqsel_mask: mask of the DPLL jitter correction bitfield in @control_reg
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* @idlest_mask: mask of the DPLL idle status bitfield in @idlest_reg
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* @lpmode_mask: mask of the DPLL low-power mode bitfield in @control_reg
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* @m4xen_mask: mask of the DPLL M4X multiplier bitfield in @control_reg
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* @auto_recal_bit: bitshift of the driftguard enable bit in @control_reg
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* @recal_en_bit: bitshift of the PRM_IRQENABLE_* bit for recalibration IRQs
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* @recal_st_bit: bitshift of the PRM_IRQSTATUS_* bit for recalibration IRQs
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* @flags: DPLL type/features (see below)
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*
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* Possible values for @flags:
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* DPLL_J_TYPE: "J-type DPLL" (only some 36xx, 4xxx DPLLs)
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*
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* @freqsel_mask is only used on the OMAP34xx family and AM35xx.
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*
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* XXX Some DPLLs have multiple bypass inputs, so it's not technically
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* correct to only have one @clk_bypass pointer.
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*
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* XXX The runtime-variable fields (@last_rounded_rate, @last_rounded_m,
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* @last_rounded_n) should be separated from the runtime-fixed fields
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* and placed into a different structure, so that the runtime-fixed data
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* can be placed into read-only space.
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*/
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struct dpll_data {
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void __iomem *mult_div1_reg;
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u32 mult_mask;
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u32 div1_mask;
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struct clk *clk_bypass;
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struct clk *clk_ref;
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void __iomem *control_reg;
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u32 enable_mask;
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unsigned long last_rounded_rate;
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u16 last_rounded_m;
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u8 last_rounded_m4xen;
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u8 last_rounded_lpmode;
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u16 max_multiplier;
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u8 last_rounded_n;
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u8 min_divider;
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u16 max_divider;
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u8 modes;
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void __iomem *autoidle_reg;
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void __iomem *idlest_reg;
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u32 autoidle_mask;
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u32 freqsel_mask;
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u32 idlest_mask;
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u32 dco_mask;
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u32 sddiv_mask;
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u32 lpmode_mask;
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u32 m4xen_mask;
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u8 auto_recal_bit;
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u8 recal_en_bit;
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u8 recal_st_bit;
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u8 flags;
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};
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/*
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* struct clk.flags possibilities
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*
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* XXX document the rest of the clock flags here
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*
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* CLOCK_CLKOUTX2: (OMAP4 only) DPLL CLKOUT and CLKOUTX2 GATE_CTRL
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* bits share the same register. This flag allows the
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* omap4_dpllmx*() code to determine which GATE_CTRL bit field
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* should be used. This is a temporary solution - a better approach
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* would be to associate clock type-specific data with the clock,
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* similar to the struct dpll_data approach.
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*/
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#define ENABLE_REG_32BIT (1 << 0) /* Use 32-bit access */
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#define CLOCK_IDLE_CONTROL (1 << 1)
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#define CLOCK_NO_IDLE_PARENT (1 << 2)
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#define ENABLE_ON_INIT (1 << 3) /* Enable upon framework init */
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#define INVERT_ENABLE (1 << 4) /* 0 enables, 1 disables */
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#define CLOCK_CLKOUTX2 (1 << 5)
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/**
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* struct clk_hw_omap - OMAP struct clk
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* @node: list_head connecting this clock into the full clock list
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* @enable_reg: register to write to enable the clock (see @enable_bit)
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* @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
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* @flags: see "struct clk.flags possibilities" above
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* @clksel_reg: for clksel clks, register va containing src/divisor select
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* @clksel_mask: bitmask in @clksel_reg for the src/divisor selector
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* @clksel: for clksel clks, pointer to struct clksel for this clock
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* @dpll_data: for DPLLs, pointer to struct dpll_data for this clock
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* @clkdm_name: clockdomain name that this clock is contained in
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* @clkdm: pointer to struct clockdomain, resolved from @clkdm_name at runtime
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* @rate_offset: bitshift for rate selection bitfield (OMAP1 only)
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* @src_offset: bitshift for source selection bitfield (OMAP1 only)
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*
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* XXX @rate_offset, @src_offset should probably be removed and OMAP1
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* clock code converted to use clksel.
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*
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*/
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struct clk_hw_omap_ops;
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struct clk_hw_omap {
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struct clk_hw hw;
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struct list_head node;
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unsigned long fixed_rate;
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u8 fixed_div;
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void __iomem *enable_reg;
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u8 enable_bit;
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u8 flags;
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void __iomem *clksel_reg;
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u32 clksel_mask;
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const struct clksel *clksel;
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struct dpll_data *dpll_data;
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const char *clkdm_name;
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struct clockdomain *clkdm;
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const struct clk_hw_omap_ops *ops;
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};
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struct clk_hw_omap_ops {
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void (*find_idlest)(struct clk_hw_omap *oclk,
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void __iomem **idlest_reg,
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u8 *idlest_bit, u8 *idlest_val);
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void (*find_companion)(struct clk_hw_omap *oclk,
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void __iomem **other_reg,
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u8 *other_bit);
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void (*allow_idle)(struct clk_hw_omap *oclk);
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void (*deny_idle)(struct clk_hw_omap *oclk);
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};
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unsigned long omap_fixed_divisor_recalc(struct clk_hw *hw,
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unsigned long parent_rate);
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/* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
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#define CORE_CLK_SRC_32K 0x0
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#define CORE_CLK_SRC_DPLL 0x1
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#define CORE_CLK_SRC_DPLL_X2 0x2
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/* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
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#define OMAP2XXX_EN_DPLL_LPBYPASS 0x1
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#define OMAP2XXX_EN_DPLL_FRBYPASS 0x2
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#define OMAP2XXX_EN_DPLL_LOCKED 0x3
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/* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
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#define OMAP3XXX_EN_DPLL_LPBYPASS 0x5
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#define OMAP3XXX_EN_DPLL_FRBYPASS 0x6
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#define OMAP3XXX_EN_DPLL_LOCKED 0x7
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/* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
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#define OMAP4XXX_EN_DPLL_MNBYPASS 0x4
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#define OMAP4XXX_EN_DPLL_LPBYPASS 0x5
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#define OMAP4XXX_EN_DPLL_FRBYPASS 0x6
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#define OMAP4XXX_EN_DPLL_LOCKED 0x7
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/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
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#define DPLL_LOW_POWER_STOP 0x1
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#define DPLL_LOW_POWER_BYPASS 0x5
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#define DPLL_LOCKED 0x7
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/* DPLL Type and DCO Selection Flags */
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#define DPLL_J_TYPE 0x1
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long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
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unsigned long *parent_rate);
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unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate);
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int omap3_noncore_dpll_enable(struct clk_hw *hw);
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void omap3_noncore_dpll_disable(struct clk_hw *hw);
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int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long parent_rate);
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u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk);
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void omap3_dpll_allow_idle(struct clk_hw_omap *clk);
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void omap3_dpll_deny_idle(struct clk_hw_omap *clk);
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unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
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unsigned long parent_rate);
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int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk);
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void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk);
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void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk);
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unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
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unsigned long parent_rate);
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long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
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unsigned long target_rate,
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unsigned long *parent_rate);
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void omap2_init_clk_clkdm(struct clk_hw *clk);
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void __init omap2_clk_disable_clkdm_control(void);
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/* clkt_clksel.c public functions */
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u32 omap2_clksel_round_rate_div(struct clk_hw_omap *clk,
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unsigned long target_rate,
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u32 *new_div);
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u8 omap2_clksel_find_parent_index(struct clk_hw *hw);
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unsigned long omap2_clksel_recalc(struct clk_hw *hw, unsigned long parent_rate);
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long omap2_clksel_round_rate(struct clk_hw *hw, unsigned long target_rate,
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unsigned long *parent_rate);
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int omap2_clksel_set_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long parent_rate);
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int omap2_clksel_set_parent(struct clk_hw *hw, u8 field_val);
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/* clkt_iclk.c public functions */
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extern void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk);
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extern void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk);
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u8 omap2_init_dpll_parent(struct clk_hw *hw);
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unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
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int omap2_dflt_clk_enable(struct clk_hw *hw);
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void omap2_dflt_clk_disable(struct clk_hw *hw);
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int omap2_dflt_clk_is_enabled(struct clk_hw *hw);
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void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
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void __iomem **other_reg,
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u8 *other_bit);
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void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
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void __iomem **idlest_reg,
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u8 *idlest_bit, u8 *idlest_val);
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void omap2_init_clk_hw_omap_clocks(struct clk *clk);
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int omap2_clk_enable_autoidle_all(void);
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int omap2_clk_disable_autoidle_all(void);
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void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks);
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int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
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void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
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const char *core_ck_name,
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const char *mpu_ck_name);
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extern u16 cpu_mask;
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extern const struct clkops clkops_omap2_dflt_wait;
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extern const struct clkops clkops_dummy;
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extern const struct clkops clkops_omap2_dflt;
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extern struct clk_functions omap2_clk_functions;
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extern const struct clksel_rate gpt_32k_rates[];
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extern const struct clksel_rate gpt_sys_rates[];
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extern const struct clksel_rate gfx_l3_rates[];
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extern const struct clksel_rate dsp_ick_rates[];
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extern struct clk dummy_ck;
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extern const struct clk_hw_omap_ops clkhwops_omap3_dpll;
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extern const struct clk_hw_omap_ops clkhwops_iclk_wait;
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extern const struct clk_hw_omap_ops clkhwops_wait;
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extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx;
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extern const struct clk_hw_omap_ops clkhwops_iclk;
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extern const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait;
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extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait;
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extern const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait;
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extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_dss_usbhost_wait;
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extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_hsotgusb_wait;
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extern const struct clk_hw_omap_ops clkhwops_omap3430es2_hsotgusb_wait;
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extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait;
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extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_wait;
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extern const struct clk_hw_omap_ops clkhwops_apll54;
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extern const struct clk_hw_omap_ops clkhwops_apll96;
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extern const struct clk_hw_omap_ops clkhwops_omap2xxx_dpll;
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extern const struct clk_hw_omap_ops clkhwops_omap2430_i2chs_wait;
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/* clksel_rate blocks shared between OMAP44xx and AM33xx */
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extern const struct clksel_rate div_1_0_rates[];
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extern const struct clksel_rate div3_1to4_rates[];
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extern const struct clksel_rate div_1_1_rates[];
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extern const struct clksel_rate div_1_2_rates[];
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extern const struct clksel_rate div_1_3_rates[];
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extern const struct clksel_rate div_1_4_rates[];
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extern const struct clksel_rate div31_1to31_rates[];
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extern int am33xx_clk_init(void);
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extern int omap2_clkops_enable_clkdm(struct clk_hw *hw);
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extern void omap2_clkops_disable_clkdm(struct clk_hw *hw);
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#endif
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