2019-06-04 08:11:33 +00:00
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/* SPDX-License-Identifier: GPL-2.0-only */
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2013-03-09 08:02:44 +00:00
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/*
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* Copyright (c) 2013 Samsung Electronics Co., Ltd.
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* Copyright (c) 2013 Linaro Ltd.
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* Author: Thomas Abraham <thomas.ab@samsung.com>
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*
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* Common Clock Framework support for all Samsung platforms
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*/
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#ifndef __SAMSUNG_CLK_H
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#define __SAMSUNG_CLK_H
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#include <linux/clk-provider.h>
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2013-06-11 09:31:07 +00:00
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#include "clk-pll.h"
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2013-03-09 08:02:44 +00:00
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2014-03-12 14:56:44 +00:00
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/**
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* struct samsung_clk_provider: information about clock provider
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* @reg_base: virtual address for the register base.
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2014-09-29 07:47:46 +00:00
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* @lock: maintains exclusion between callbacks for a given clock-provider.
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2017-04-24 06:42:20 +00:00
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* @clk_data: holds clock related data like clk_hw* and number of clocks.
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2014-03-12 14:56:44 +00:00
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*/
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struct samsung_clk_provider {
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void __iomem *reg_base;
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2017-08-21 08:05:00 +00:00
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struct device *dev;
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2014-03-12 14:56:44 +00:00
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spinlock_t lock;
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2019-01-04 21:48:26 +00:00
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/* clk_data must be the last entry due to variable length 'hws' array */
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2017-04-24 06:42:20 +00:00
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struct clk_hw_onecell_data clk_data;
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2014-03-12 14:56:44 +00:00
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};
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2013-03-18 04:43:56 +00:00
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/**
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* struct samsung_clock_alias: information about mux clock
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* @id: platform specific id of the clock.
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* @dev_name: name of the device to which this clock belongs.
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* @alias: optional clock alias name to be assigned to this clock.
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*/
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struct samsung_clock_alias {
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unsigned int id;
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const char *dev_name;
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const char *alias;
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};
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#define ALIAS(_id, dname, a) \
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{ \
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.id = _id, \
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.dev_name = dname, \
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.alias = a, \
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}
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2013-06-11 09:31:16 +00:00
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#define MHZ (1000 * 1000)
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2013-03-09 08:02:44 +00:00
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/**
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* struct samsung_fixed_rate_clock: information about fixed-rate clock
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* @id: platform specific id of the clock.
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* @name: name of this fixed-rate clock.
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* @parent_name: optional parent clock name.
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* @flags: optional fixed-rate clock flags.
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* @fixed-rate: fixed clock rate of this clock.
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*/
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struct samsung_fixed_rate_clock {
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unsigned int id;
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char *name;
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const char *parent_name;
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unsigned long flags;
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unsigned long fixed_rate;
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};
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#define FRATE(_id, cname, pname, f, frate) \
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{ \
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.id = _id, \
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.name = cname, \
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.parent_name = pname, \
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.flags = f, \
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.fixed_rate = frate, \
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}
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/*
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* struct samsung_fixed_factor_clock: information about fixed-factor clock
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* @id: platform specific id of the clock.
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* @name: name of this fixed-factor clock.
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* @parent_name: parent clock name.
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* @mult: fixed multiplication factor.
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* @div: fixed division factor.
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* @flags: optional fixed-factor clock flags.
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*/
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struct samsung_fixed_factor_clock {
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unsigned int id;
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char *name;
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const char *parent_name;
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unsigned long mult;
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unsigned long div;
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unsigned long flags;
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};
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#define FFACTOR(_id, cname, pname, m, d, f) \
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{ \
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.id = _id, \
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.name = cname, \
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.parent_name = pname, \
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.mult = m, \
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.div = d, \
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.flags = f, \
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}
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/**
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* struct samsung_mux_clock: information about mux clock
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* @id: platform specific id of the clock.
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* @name: name of this mux clock.
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* @parent_names: array of pointer to parent clock names.
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* @num_parents: number of parents listed in @parent_names.
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* @flags: optional flags for basic clock.
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* @offset: offset of the register for configuring the mux.
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* @shift: starting bit location of the mux control bit-field in @reg.
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* @width: width of the mux control bit-field in @reg.
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* @mux_flags: flags for mux-type clock.
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*/
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struct samsung_mux_clock {
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unsigned int id;
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const char *name;
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2015-05-28 08:45:51 +00:00
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const char *const *parent_names;
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2013-03-09 08:02:44 +00:00
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u8 num_parents;
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unsigned long flags;
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unsigned long offset;
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u8 shift;
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u8 width;
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u8 mux_flags;
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};
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2017-10-03 10:00:16 +00:00
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#define __MUX(_id, cname, pnames, o, s, w, f, mf) \
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2013-03-09 08:02:44 +00:00
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{ \
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.id = _id, \
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.name = cname, \
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.parent_names = pnames, \
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.num_parents = ARRAY_SIZE(pnames), \
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2013-07-29 11:25:01 +00:00
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.flags = (f) | CLK_SET_RATE_NO_REPARENT, \
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2013-03-09 08:02:44 +00:00
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.offset = o, \
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.shift = s, \
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.width = w, \
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.mux_flags = mf, \
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}
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#define MUX(_id, cname, pnames, o, s, w) \
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2017-10-03 10:00:16 +00:00
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__MUX(_id, cname, pnames, o, s, w, 0, 0)
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2013-03-09 08:02:44 +00:00
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#define MUX_F(_id, cname, pnames, o, s, w, f, mf) \
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2017-10-03 10:00:16 +00:00
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__MUX(_id, cname, pnames, o, s, w, f, mf)
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2013-06-20 10:47:17 +00:00
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2013-03-09 08:02:44 +00:00
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/**
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* @id: platform specific id of the clock.
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* struct samsung_div_clock: information about div clock
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* @name: name of this div clock.
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* @parent_name: name of the parent clock.
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* @flags: optional flags for basic clock.
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* @offset: offset of the register for configuring the div.
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* @shift: starting bit location of the div control bit-field in @reg.
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* @div_flags: flags for div-type clock.
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*/
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struct samsung_div_clock {
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unsigned int id;
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const char *name;
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const char *parent_name;
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unsigned long flags;
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unsigned long offset;
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u8 shift;
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u8 width;
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u8 div_flags;
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2013-03-18 04:43:52 +00:00
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struct clk_div_table *table;
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2013-03-09 08:02:44 +00:00
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};
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2017-10-03 10:00:16 +00:00
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#define __DIV(_id, cname, pname, o, s, w, f, df, t) \
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2013-03-09 08:02:44 +00:00
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{ \
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.id = _id, \
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.name = cname, \
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.parent_name = pname, \
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.flags = f, \
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.offset = o, \
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.shift = s, \
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.width = w, \
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.div_flags = df, \
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2013-03-18 04:43:52 +00:00
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.table = t, \
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2013-03-09 08:02:44 +00:00
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}
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#define DIV(_id, cname, pname, o, s, w) \
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2017-10-03 10:00:16 +00:00
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__DIV(_id, cname, pname, o, s, w, 0, 0, NULL)
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2013-03-09 08:02:44 +00:00
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#define DIV_F(_id, cname, pname, o, s, w, f, df) \
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2017-10-03 10:00:16 +00:00
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__DIV(_id, cname, pname, o, s, w, f, df, NULL)
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2013-03-18 04:43:52 +00:00
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#define DIV_T(_id, cname, pname, o, s, w, t) \
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2017-10-03 10:00:16 +00:00
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__DIV(_id, cname, pname, o, s, w, 0, 0, t)
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2013-03-09 08:02:44 +00:00
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/**
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* struct samsung_gate_clock: information about gate clock
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* @id: platform specific id of the clock.
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* @name: name of this gate clock.
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* @parent_name: name of the parent clock.
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* @flags: optional flags for basic clock.
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* @offset: offset of the register for configuring the gate.
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* @bit_idx: bit index of the gate control bit-field in @reg.
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* @gate_flags: flags for gate-type clock.
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*/
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struct samsung_gate_clock {
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unsigned int id;
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const char *name;
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const char *parent_name;
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unsigned long flags;
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unsigned long offset;
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u8 bit_idx;
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u8 gate_flags;
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};
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2017-10-03 10:00:16 +00:00
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#define __GATE(_id, cname, pname, o, b, f, gf) \
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2013-03-09 08:02:44 +00:00
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{ \
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.id = _id, \
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.name = cname, \
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.parent_name = pname, \
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.flags = f, \
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.offset = o, \
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.bit_idx = b, \
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.gate_flags = gf, \
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}
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#define GATE(_id, cname, pname, o, b, f, gf) \
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2017-10-03 10:00:16 +00:00
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__GATE(_id, cname, pname, o, b, f, gf)
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2013-03-09 08:02:44 +00:00
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2016-05-11 12:02:14 +00:00
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#define PNAME(x) static const char * const x[] __initconst
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2013-03-09 08:02:44 +00:00
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/**
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* struct samsung_clk_reg_dump: register dump of clock controller registers.
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* @offset: clock register offset from the controller base address.
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* @value: the value to be register at offset.
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*/
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struct samsung_clk_reg_dump {
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u32 offset;
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u32 value;
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};
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2013-06-11 09:31:07 +00:00
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/**
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* struct samsung_pll_clock: information about pll clock
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* @id: platform specific id of the clock.
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* @name: name of this pll clock.
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* @parent_name: name of the parent clock.
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* @flags: optional flags for basic clock.
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* @con_offset: offset of the register for configuring the PLL.
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* @lock_offset: offset of the register for locking the PLL.
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* @type: Type of PLL to be registered.
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*/
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struct samsung_pll_clock {
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unsigned int id;
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const char *name;
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const char *parent_name;
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unsigned long flags;
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int con_offset;
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int lock_offset;
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enum samsung_pll_type type;
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2013-06-11 09:31:12 +00:00
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const struct samsung_pll_rate_table *rate_table;
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2013-06-11 09:31:07 +00:00
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};
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2017-10-03 10:00:16 +00:00
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#define __PLL(_typ, _id, _name, _pname, _flags, _lock, _con, _rtable) \
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2013-06-11 09:31:07 +00:00
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{ \
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.id = _id, \
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.type = _typ, \
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.name = _name, \
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.parent_name = _pname, \
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2017-09-14 14:38:17 +00:00
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.flags = _flags, \
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2013-06-11 09:31:07 +00:00
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.con_offset = _con, \
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.lock_offset = _lock, \
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2013-06-11 09:31:12 +00:00
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.rate_table = _rtable, \
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2013-06-11 09:31:07 +00:00
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}
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2013-06-11 09:31:12 +00:00
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#define PLL(_typ, _id, _name, _pname, _lock, _con, _rtable) \
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2017-10-03 10:00:16 +00:00
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__PLL(_typ, _id, _name, _pname, CLK_GET_RATE_NOCACHE, _lock, \
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_con, _rtable)
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2013-06-11 09:31:07 +00:00
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2021-10-14 19:53:45 +00:00
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struct samsung_cpu_clock {
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unsigned int id;
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const char *name;
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unsigned int parent_id;
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unsigned int alt_parent_id;
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unsigned long flags;
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int offset;
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const struct exynos_cpuclk_cfg_data *cfg;
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};
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#define CPU_CLK(_id, _name, _pid, _apid, _flags, _offset, _cfg) \
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{ \
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.id = _id, \
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.name = _name, \
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.parent_id = _pid, \
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.alt_parent_id = _apid, \
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.flags = _flags, \
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.offset = _offset, \
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.cfg = _cfg, \
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}
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2014-09-22 04:47:02 +00:00
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struct samsung_clock_reg_cache {
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struct list_head node;
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void __iomem *reg_base;
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struct samsung_clk_reg_dump *rdump;
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unsigned int rd_num;
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2018-09-06 15:55:30 +00:00
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const struct samsung_clk_reg_dump *rsuspend;
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unsigned int rsuspend_num;
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2014-09-22 04:47:02 +00:00
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};
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struct samsung_cmu_info {
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/* list of pll clocks and respective count */
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2016-05-11 12:01:57 +00:00
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const struct samsung_pll_clock *pll_clks;
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2014-09-22 04:47:02 +00:00
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unsigned int nr_pll_clks;
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/* list of mux clocks and respective count */
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2016-05-11 12:01:57 +00:00
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const struct samsung_mux_clock *mux_clks;
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2014-09-22 04:47:02 +00:00
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unsigned int nr_mux_clks;
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/* list of div clocks and respective count */
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2016-05-11 12:01:57 +00:00
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const struct samsung_div_clock *div_clks;
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2014-09-22 04:47:02 +00:00
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unsigned int nr_div_clks;
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/* list of gate clocks and respective count */
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2016-05-11 12:01:57 +00:00
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const struct samsung_gate_clock *gate_clks;
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2014-09-22 04:47:02 +00:00
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unsigned int nr_gate_clks;
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/* list of fixed clocks and respective count */
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2016-05-11 12:01:57 +00:00
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const struct samsung_fixed_rate_clock *fixed_clks;
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2014-09-22 04:47:02 +00:00
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unsigned int nr_fixed_clks;
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2014-09-22 04:47:03 +00:00
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/* list of fixed factor clocks and respective count */
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2016-05-11 12:01:57 +00:00
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const struct samsung_fixed_factor_clock *fixed_factor_clks;
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2014-09-22 04:47:03 +00:00
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unsigned int nr_fixed_factor_clks;
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2014-09-22 04:47:02 +00:00
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/* total number of clocks with IDs assigned*/
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unsigned int nr_clk_ids;
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2021-10-14 19:53:45 +00:00
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/* list of cpu clocks and respective count */
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const struct samsung_cpu_clock *cpu_clks;
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unsigned int nr_cpu_clks;
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2014-09-22 04:47:02 +00:00
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/* list and number of clocks registers */
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2016-05-11 12:01:57 +00:00
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const unsigned long *clk_regs;
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2014-09-22 04:47:02 +00:00
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unsigned int nr_clk_regs;
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2017-08-21 08:05:01 +00:00
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/* list and number of clocks registers to set before suspend */
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const struct samsung_clk_reg_dump *suspend_regs;
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unsigned int nr_suspend_regs;
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/* name of the parent clock needed for CMU register access */
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const char *clk_name;
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2014-09-22 04:47:02 +00:00
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};
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2021-10-15 15:14:25 +00:00
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struct samsung_clk_provider * samsung_clk_init(
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2014-03-12 14:56:44 +00:00
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struct device_node *np, void __iomem *base,
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unsigned long nr_clks);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_of_add_provider(struct device_node *np,
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2014-06-18 15:46:52 +00:00
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struct samsung_clk_provider *ctx);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_of_register_fixed_ext(
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2014-03-12 14:56:44 +00:00
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struct samsung_clk_provider *ctx,
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struct samsung_fixed_rate_clock *fixed_rate_clk,
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unsigned int nr_fixed_rate_clk,
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2014-06-26 12:00:06 +00:00
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const struct of_device_id *clk_matches);
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2013-03-09 08:02:44 +00:00
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2021-10-15 15:14:25 +00:00
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void samsung_clk_add_lookup(struct samsung_clk_provider *ctx,
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2017-04-24 06:42:20 +00:00
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struct clk_hw *clk_hw, unsigned int id);
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2013-03-09 08:02:44 +00:00
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_alias(struct samsung_clk_provider *ctx,
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2015-05-28 08:45:51 +00:00
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const struct samsung_clock_alias *list,
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2014-03-12 14:56:44 +00:00
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unsigned int nr_clk);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_fixed_rate(
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2014-03-12 14:56:44 +00:00
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struct samsung_clk_provider *ctx,
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2015-05-28 08:45:51 +00:00
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const struct samsung_fixed_rate_clock *clk_list,
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2014-03-12 14:56:44 +00:00
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unsigned int nr_clk);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_fixed_factor(
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2014-03-12 14:56:44 +00:00
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struct samsung_clk_provider *ctx,
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2015-05-28 08:45:51 +00:00
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const struct samsung_fixed_factor_clock *list,
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2014-03-12 14:56:44 +00:00
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unsigned int nr_clk);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_mux(struct samsung_clk_provider *ctx,
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2015-05-28 08:45:51 +00:00
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const struct samsung_mux_clock *clk_list,
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2014-03-12 14:56:44 +00:00
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unsigned int nr_clk);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_div(struct samsung_clk_provider *ctx,
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2015-05-28 08:45:51 +00:00
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const struct samsung_div_clock *clk_list,
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2014-03-12 14:56:44 +00:00
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unsigned int nr_clk);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_gate(struct samsung_clk_provider *ctx,
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2015-05-28 08:45:51 +00:00
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const struct samsung_gate_clock *clk_list,
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2014-03-12 14:56:44 +00:00
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unsigned int nr_clk);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_pll(struct samsung_clk_provider *ctx,
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2015-05-28 08:45:51 +00:00
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const struct samsung_pll_clock *pll_list,
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2014-03-12 14:56:44 +00:00
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unsigned int nr_clk, void __iomem *base);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_register_cpu(struct samsung_clk_provider *ctx,
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2021-10-14 19:53:45 +00:00
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const struct samsung_cpu_clock *list, unsigned int nr_clk);
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2013-03-09 08:02:44 +00:00
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2021-10-15 15:14:25 +00:00
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struct samsung_clk_provider *samsung_cmu_register_one(
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2014-12-23 07:40:21 +00:00
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struct device_node *,
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2016-05-11 12:01:57 +00:00
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const struct samsung_cmu_info *);
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2014-09-22 04:47:02 +00:00
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2018-09-06 15:55:30 +00:00
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#ifdef CONFIG_PM_SLEEP
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2021-10-15 15:14:25 +00:00
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void samsung_clk_extended_sleep_init(void __iomem *reg_base,
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2016-05-24 13:19:15 +00:00
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const unsigned long *rdump,
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2018-09-06 15:55:30 +00:00
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unsigned long nr_rdump,
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const struct samsung_clk_reg_dump *rsuspend,
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unsigned long nr_rsuspend);
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#else
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static inline void samsung_clk_extended_sleep_init(void __iomem *reg_base,
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const unsigned long *rdump,
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unsigned long nr_rdump,
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const struct samsung_clk_reg_dump *rsuspend,
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unsigned long nr_rsuspend) {}
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#endif
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#define samsung_clk_sleep_init(reg_base, rdump, nr_rdump) \
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samsung_clk_extended_sleep_init(reg_base, rdump, nr_rdump, NULL, 0)
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2016-05-24 13:19:15 +00:00
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2021-10-15 15:14:25 +00:00
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void samsung_clk_save(void __iomem *base,
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2014-03-12 14:56:44 +00:00
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struct samsung_clk_reg_dump *rd,
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unsigned int num_regs);
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2021-10-15 15:14:25 +00:00
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void samsung_clk_restore(void __iomem *base,
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2014-03-12 14:56:44 +00:00
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const struct samsung_clk_reg_dump *rd,
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unsigned int num_regs);
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2021-10-15 15:14:25 +00:00
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struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump(
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2014-03-12 14:56:44 +00:00
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const unsigned long *rdump,
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unsigned long nr_rdump);
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2014-02-13 23:16:00 +00:00
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2013-03-09 08:02:44 +00:00
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#endif /* __SAMSUNG_CLK_H */
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