Merge tag 'for-linus-20140808' of git://git.infradead.org/linux-mtd
[deliverable/linux.git] / arch / arm / mach-omap2 / clock.h
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543d9378
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1/*
2 * linux/arch/arm/mach-omap2/clock.h
3 *
d8a94458 4 * Copyright (C) 2005-2009 Texas Instruments, Inc.
530e544f 5 * Copyright (C) 2004-2011 Nokia Corporation
543d9378 6 *
a16e9703
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7 * Contacts:
8 * Richard Woodruff <r-woodruff2@ti.com>
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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
12706c54 19#include <linux/kernel.h>
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20#include <linux/list.h>
21
e10dd62f 22#include <linux/clkdev.h>
f9ae32a7 23#include <linux/clk-provider.h>
f38b0dd6 24#include <linux/clk/ti.h>
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25
26struct omap_clk {
27 u16 cpu;
28 struct clk_lookup lk;
29};
30
78e52e02 31#define CLK(dev, con, ck) \
e10dd62f 32 { \
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33 .lk = { \
34 .dev_id = dev, \
35 .con_id = con, \
36 .clk = ck, \
37 }, \
38 }
39
b5a2366c 40struct clockdomain;
b5a2366c 41
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42#define DEFINE_STRUCT_CLK(_name, _parent_array_name, _clkops_name) \
43 static struct clk _name = { \
44 .name = #_name, \
45 .hw = &_name##_hw.hw, \
46 .parent_names = _parent_array_name, \
47 .num_parents = ARRAY_SIZE(_parent_array_name), \
48 .ops = &_clkops_name, \
49 };
50
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51#define DEFINE_STRUCT_CLK_FLAGS(_name, _parent_array_name, \
52 _clkops_name, _flags) \
53 static struct clk _name = { \
54 .name = #_name, \
55 .hw = &_name##_hw.hw, \
56 .parent_names = _parent_array_name, \
57 .num_parents = ARRAY_SIZE(_parent_array_name), \
58 .ops = &_clkops_name, \
59 .flags = _flags, \
60 };
61
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62#define DEFINE_STRUCT_CLK_HW_OMAP(_name, _clkdm_name) \
63 static struct clk_hw_omap _name##_hw = { \
64 .hw = { \
65 .clk = &_name, \
66 }, \
67 .clkdm_name = _clkdm_name, \
68 };
69
70#define DEFINE_CLK_OMAP_MUX(_name, _clkdm_name, _clksel, \
71 _clksel_reg, _clksel_mask, \
72 _parent_names, _ops) \
73 static struct clk _name; \
74 static struct clk_hw_omap _name##_hw = { \
75 .hw = { \
76 .clk = &_name, \
77 }, \
78 .clksel = _clksel, \
79 .clksel_reg = _clksel_reg, \
80 .clksel_mask = _clksel_mask, \
81 .clkdm_name = _clkdm_name, \
82 }; \
83 DEFINE_STRUCT_CLK(_name, _parent_names, _ops);
84
85#define DEFINE_CLK_OMAP_MUX_GATE(_name, _clkdm_name, _clksel, \
86 _clksel_reg, _clksel_mask, \
87 _enable_reg, _enable_bit, \
88 _hwops, _parent_names, _ops) \
89 static struct clk _name; \
90 static struct clk_hw_omap _name##_hw = { \
91 .hw = { \
92 .clk = &_name, \
93 }, \
94 .ops = _hwops, \
95 .enable_reg = _enable_reg, \
96 .enable_bit = _enable_bit, \
97 .clksel = _clksel, \
98 .clksel_reg = _clksel_reg, \
99 .clksel_mask = _clksel_mask, \
100 .clkdm_name = _clkdm_name, \
101 }; \
102 DEFINE_STRUCT_CLK(_name, _parent_names, _ops);
103
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104/* struct clksel_rate.flags possibilities */
105#define RATE_IN_242X (1 << 0)
106#define RATE_IN_243X (1 << 1)
107#define RATE_IN_3430ES1 (1 << 2) /* 3430ES1 rates only */
108#define RATE_IN_3430ES2PLUS (1 << 3) /* 3430 ES >= 2 rates only */
109#define RATE_IN_36XX (1 << 4)
110#define RATE_IN_4430 (1 << 5)
111#define RATE_IN_TI816X (1 << 6)
112#define RATE_IN_4460 (1 << 7)
113#define RATE_IN_AM33XX (1 << 8)
114#define RATE_IN_TI814X (1 << 9)
115
116#define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)
117#define RATE_IN_34XX (RATE_IN_3430ES1 | RATE_IN_3430ES2PLUS)
118#define RATE_IN_3XXX (RATE_IN_34XX | RATE_IN_36XX)
119#define RATE_IN_44XX (RATE_IN_4430 | RATE_IN_4460)
120
121/* RATE_IN_3430ES2PLUS_36XX includes 34xx/35xx with ES >=2, and all 36xx/37xx */
122#define RATE_IN_3430ES2PLUS_36XX (RATE_IN_3430ES2PLUS | RATE_IN_36XX)
123
124
125/**
126 * struct clksel_rate - register bitfield values corresponding to clk divisors
127 * @val: register bitfield value (shifted to bit 0)
128 * @div: clock divisor corresponding to @val
129 * @flags: (see "struct clksel_rate.flags possibilities" above)
130 *
131 * @val should match the value of a read from struct clk.clksel_reg
132 * AND'ed with struct clk.clksel_mask, shifted right to bit 0.
133 *
134 * @div is the divisor that should be applied to the parent clock's rate
135 * to produce the current clock's rate.
136 */
137struct clksel_rate {
138 u32 val;
139 u8 div;
140 u16 flags;
141};
142
143/**
144 * struct clksel - available parent clocks, and a pointer to their divisors
145 * @parent: struct clk * to a possible parent clock
146 * @rates: available divisors for this parent clock
147 *
148 * A struct clksel is always associated with one or more struct clks
149 * and one or more struct clksel_rates.
150 */
151struct clksel {
152 struct clk *parent;
153 const struct clksel_rate *rates;
154};
155
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156/* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
157#define CORE_CLK_SRC_32K 0x0
158#define CORE_CLK_SRC_DPLL 0x1
159#define CORE_CLK_SRC_DPLL_X2 0x2
160
161/* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
162#define OMAP2XXX_EN_DPLL_LPBYPASS 0x1
163#define OMAP2XXX_EN_DPLL_FRBYPASS 0x2
164#define OMAP2XXX_EN_DPLL_LOCKED 0x3
165
166/* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
167#define OMAP3XXX_EN_DPLL_LPBYPASS 0x5
168#define OMAP3XXX_EN_DPLL_FRBYPASS 0x6
169#define OMAP3XXX_EN_DPLL_LOCKED 0x7
170
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171/* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
172#define OMAP4XXX_EN_DPLL_MNBYPASS 0x4
173#define OMAP4XXX_EN_DPLL_LPBYPASS 0x5
174#define OMAP4XXX_EN_DPLL_FRBYPASS 0x6
175#define OMAP4XXX_EN_DPLL_LOCKED 0x7
176
32cc0021
MT
177u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk);
178void omap3_dpll_allow_idle(struct clk_hw_omap *clk);
179void omap3_dpll_deny_idle(struct clk_hw_omap *clk);
32cc0021
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180int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk);
181void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk);
182void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk);
543d9378 183
12706c54 184void __init omap2_clk_disable_clkdm_control(void);
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185
186/* clkt_clksel.c public functions */
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187u32 omap2_clksel_round_rate_div(struct clk_hw_omap *clk,
188 unsigned long target_rate,
189 u32 *new_div);
190u8 omap2_clksel_find_parent_index(struct clk_hw *hw);
191unsigned long omap2_clksel_recalc(struct clk_hw *hw, unsigned long parent_rate);
192long omap2_clksel_round_rate(struct clk_hw *hw, unsigned long target_rate,
193 unsigned long *parent_rate);
194int omap2_clksel_set_rate(struct clk_hw *hw, unsigned long rate,
195 unsigned long parent_rate);
196int omap2_clksel_set_parent(struct clk_hw *hw, u8 field_val);
435699db 197
530e544f 198/* clkt_iclk.c public functions */
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199extern void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk);
200extern void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk);
530e544f 201
32cc0021 202unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
435699db 203
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204void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
205 void __iomem **other_reg,
206 u8 *other_bit);
207void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
208 void __iomem **idlest_reg,
209 u8 *idlest_bit, u8 *idlest_val);
23fb8ba3 210int omap2_clk_enable_autoidle_all(void);
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211int omap2_clk_allow_idle(struct clk *clk);
212int omap2_clk_deny_idle(struct clk *clk);
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213int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
214void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
215 const char *core_ck_name,
216 const char *mpu_ck_name);
543d9378 217
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218u32 omap2_clk_readl(struct clk_hw_omap *clk, void __iomem *reg);
219void omap2_clk_writel(u32 val, struct clk_hw_omap *clk, void __iomem *reg);
220
99541195 221extern u16 cpu_mask;
d8a94458 222
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223/*
224 * Clock features setup. Used instead of CPU type checks.
225 */
226struct ti_clk_features {
227 u32 flags;
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228 long fint_min;
229 long fint_max;
230 long fint_band1_max;
231 long fint_band2_min;
512d91cb 232 u8 dpll_bypass_vals;
066edb2d 233 u8 cm_idlest_val;
8111e010 234};
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235
236#define TI_CLK_DPLL_HAS_FREQSEL (1 << 0)
237
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238extern struct ti_clk_features ti_clk_features;
239
b36ee724 240extern const struct clkops clkops_omap2_dflt_wait;
7c43d547 241extern const struct clkops clkops_dummy;
bc51da4e 242extern const struct clkops clkops_omap2_dflt;
b36ee724 243
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244extern struct clk_functions omap2_clk_functions;
245
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246extern const struct clksel_rate gpt_32k_rates[];
247extern const struct clksel_rate gpt_sys_rates[];
248extern const struct clksel_rate gfx_l3_rates[];
22411396 249extern const struct clksel_rate dsp_ick_rates[];
cb26867e 250extern struct clk dummy_ck;
543d9378 251
32cc0021
MT
252extern const struct clk_hw_omap_ops clkhwops_iclk_wait;
253extern const struct clk_hw_omap_ops clkhwops_wait;
b4777a21 254extern const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait;
b4777a21 255extern const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait;
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256extern const struct clk_hw_omap_ops clkhwops_omap3430es2_hsotgusb_wait;
257extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait;
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258extern const struct clk_hw_omap_ops clkhwops_apll54;
259extern const struct clk_hw_omap_ops clkhwops_apll96;
657ebfad 260
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261/* clksel_rate blocks shared between OMAP44xx and AM33xx */
262extern const struct clksel_rate div_1_0_rates[];
cb26867e 263extern const struct clksel_rate div3_1to4_rates[];
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264extern const struct clksel_rate div_1_1_rates[];
265extern const struct clksel_rate div_1_2_rates[];
266extern const struct clksel_rate div_1_3_rates[];
267extern const struct clksel_rate div_1_4_rates[];
268extern const struct clksel_rate div31_1to31_rates[];
269
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270extern void __iomem *clk_memmaps[];
271
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272extern int am33xx_clk_init(void);
273
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274extern int omap2_clkops_enable_clkdm(struct clk_hw *hw);
275extern void omap2_clkops_disable_clkdm(struct clk_hw *hw);
32cc0021 276
78e52e02 277extern void omap_clocks_register(struct omap_clk *oclks, int cnt);
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278
279void __init ti_clk_init_features(void);
543d9378 280#endif
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