clk.c (a245fecbb8064641d9cc317b347b5bdb2b7a4bb6) clk.c (90c590254051f511299538c158e12fdad41ce163)
1/*
2 * Copyright (c) 2014 MundoReader S.L.
3 * Author: Heiko Stuebner <heiko@sntech.de>
4 *
5 * based on
6 *
7 * samsung/clk.c
8 * Copyright (c) 2013 Samsung Electronics Co., Ltd.

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18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 */
22
23#include <linux/slab.h>
24#include <linux/clk.h>
25#include <linux/clk-provider.h>
1/*
2 * Copyright (c) 2014 MundoReader S.L.
3 * Author: Heiko Stuebner <heiko@sntech.de>
4 *
5 * based on
6 *
7 * samsung/clk.c
8 * Copyright (c) 2013 Samsung Electronics Co., Ltd.

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18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 */
22
23#include <linux/slab.h>
24#include <linux/clk.h>
25#include <linux/clk-provider.h>
26#include <linux/mfd/syscon.h>
27#include <linux/regmap.h>
26#include "clk.h"
27
28/**
29 * Register a clock branch.
30 * Most clock branches have a form like
31 *
32 * src1 --|--\
33 * |M |--[GATE]-[DIV]-

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100
101 return clk;
102}
103
104static DEFINE_SPINLOCK(clk_lock);
105static struct clk **clk_table;
106static void __iomem *reg_base;
107static struct clk_onecell_data clk_data;
28#include "clk.h"
29
30/**
31 * Register a clock branch.
32 * Most clock branches have a form like
33 *
34 * src1 --|--\
35 * |M |--[GATE]-[DIV]-

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102
103 return clk;
104}
105
106static DEFINE_SPINLOCK(clk_lock);
107static struct clk **clk_table;
108static void __iomem *reg_base;
109static struct clk_onecell_data clk_data;
110static struct device_node *cru_node;
111static struct regmap *grf;
108
109void __init rockchip_clk_init(struct device_node *np, void __iomem *base,
110 unsigned long nr_clks)
111{
112 reg_base = base;
112
113void __init rockchip_clk_init(struct device_node *np, void __iomem *base,
114 unsigned long nr_clks)
115{
116 reg_base = base;
117 cru_node = np;
118 grf = ERR_PTR(-EPROBE_DEFER);
113
114 clk_table = kcalloc(nr_clks, sizeof(struct clk *), GFP_KERNEL);
115 if (!clk_table)
116 pr_err("%s: could not allocate clock lookup table\n", __func__);
117
118 clk_data.clks = clk_table;
119 clk_data.clk_num = nr_clks;
120 of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
121}
122
119
120 clk_table = kcalloc(nr_clks, sizeof(struct clk *), GFP_KERNEL);
121 if (!clk_table)
122 pr_err("%s: could not allocate clock lookup table\n", __func__);
123
124 clk_data.clks = clk_table;
125 clk_data.clk_num = nr_clks;
126 of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
127}
128
129struct regmap *rockchip_clk_get_grf(void)
130{
131 if (IS_ERR(grf))
132 grf = syscon_regmap_lookup_by_phandle(cru_node, "rockchip,grf");
133 return grf;
134}
135
123void rockchip_clk_add_lookup(struct clk *clk, unsigned int id)
124{
125 if (clk_table && id)
126 clk_table[id] = clk;
127}
128
136void rockchip_clk_add_lookup(struct clk *clk, unsigned int id)
137{
138 if (clk_table && id)
139 clk_table[id] = clk;
140}
141
142void __init rockchip_clk_register_plls(struct rockchip_pll_clock *list,
143 unsigned int nr_pll, int grf_lock_offset)
144{
145 struct clk *clk;
146 int idx;
147
148 for (idx = 0; idx < nr_pll; idx++, list++) {
149 clk = rockchip_clk_register_pll(list->type, list->name,
150 list->parent_names, list->num_parents,
151 reg_base, list->con_offset, grf_lock_offset,
152 list->lock_shift, list->mode_offset,
153 list->mode_shift, list->rate_table, &clk_lock);
154 if (IS_ERR(clk)) {
155 pr_err("%s: failed to register clock %s\n", __func__,
156 list->name);
157 continue;
158 }
159
160 rockchip_clk_add_lookup(clk, list->id);
161 }
162}
163
129void __init rockchip_clk_register_branches(
130 struct rockchip_clk_branch *list,
131 unsigned int nr_clk)
132{
133 struct clk *clk = NULL;
134 unsigned int idx;
135 unsigned long flags;
136

--- 73 unchanged lines hidden --- 		164void __init rockchip_clk_register_branches(
165 struct rockchip_clk_branch *list,
166 unsigned int nr_clk)
167{
168 struct clk *clk = NULL;
169 unsigned int idx;
170 unsigned long flags;
171

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