2 * arch/arm/mach-tegra/include/mach/clock.h
4 * Copyright (C) 2010 Google, Inc.
7 * Colin Cross <ccross@google.com>
9 * This software is licensed under the terms of the GNU General Public
10 * License version 2, as published by the Free Software Foundation, and
11 * may be copied, distributed, and modified under those terms.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
20 #ifndef __MACH_TEGRA_CLOCK_H
21 #define __MACH_TEGRA_CLOCK_H
23 #include <linux/list.h>
24 #include <linux/mutex.h>
25 #include <linux/spinlock.h>
26 #include <asm/clkdev.h>
28 #define DIV_BUS (1 << 0)
29 #define DIV_U71 (1 << 1)
30 #define DIV_U71_FIXED (1 << 2)
31 #define DIV_2 (1 << 3)
32 #define DIV_U16 (1 << 4)
33 #define PLL_FIXED (1 << 5)
34 #define PLL_HAS_CPCON (1 << 6)
37 #define PERIPH_NO_RESET (1 << 9)
38 #define PERIPH_NO_ENB (1 << 10)
39 #define PERIPH_EMC_ENB (1 << 11)
40 #define PERIPH_MANUAL_RESET (1 << 12)
41 #define PLL_ALT_MISC_REG (1 << 13)
42 #define PLLU (1 << 14)
43 #define ENABLE_ON_INIT (1 << 28)
52 struct clk_pll_freq_table {
53 unsigned long input_rate;
54 unsigned long output_rate;
62 void (*init)(struct clk *);
63 int (*enable)(struct clk *);
64 void (*disable)(struct clk *);
65 int (*set_parent)(struct clk *, struct clk *);
66 int (*set_rate)(struct clk *, unsigned long);
67 long (*round_rate)(struct clk *, unsigned long);
68 void (*reset)(struct clk *, bool);
78 /* node for master clocks list */
79 struct list_head node; /* node for list of all clocks */
81 struct clk_lookup lookup;
83 #ifdef CONFIG_DEBUG_FS
85 struct dentry *parent_dent;
89 unsigned long dvfs_rate;
91 unsigned long max_rate;
92 unsigned long min_rate;
104 const struct clk_mux_sel *inputs;
108 struct list_head shared_bus_list;
112 unsigned int clk_num;
115 unsigned long input_min;
116 unsigned long input_max;
117 unsigned long cf_min;
118 unsigned long cf_max;
119 unsigned long vco_min;
120 unsigned long vco_max;
121 const struct clk_pll_freq_table *freq_table;
133 struct list_head node;
143 struct clk_duplicate {
145 struct clk_lookup lookup;
148 struct tegra_clk_init_table {
155 void tegra2_init_clocks(void);
156 void tegra2_periph_reset_deassert(struct clk *c);
157 void tegra2_periph_reset_assert(struct clk *c);
158 void clk_init(struct clk *clk);
159 struct clk *tegra_get_clock_by_name(const char *name);
160 unsigned long clk_measure_input_freq(void);
161 int clk_reparent(struct clk *c, struct clk *parent);
162 void tegra_clk_init_from_table(struct tegra_clk_init_table *table);
163 void clk_set_cansleep(struct clk *c);
164 unsigned long clk_get_rate_locked(struct clk *c);