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80eded6c BB |
1 | /* |
2 | * drivers/clk/at91/sckc.c | |
3 | * | |
4 | * Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/clk-provider.h> | |
14 | #include <linux/clkdev.h> | |
15 | #include <linux/of.h> | |
16 | #include <linux/of_address.h> | |
17 | #include <linux/io.h> | |
18 | ||
19 | #include "sckc.h" | |
20 | ||
21 | static const struct of_device_id sckc_clk_ids[] __initconst = { | |
22 | /* Slow clock */ | |
23 | { | |
24 | .compatible = "atmel,at91sam9x5-clk-slow-osc", | |
25 | .data = of_at91sam9x5_clk_slow_osc_setup, | |
26 | }, | |
27 | { | |
28 | .compatible = "atmel,at91sam9x5-clk-slow-rc-osc", | |
29 | .data = of_at91sam9x5_clk_slow_rc_osc_setup, | |
30 | }, | |
31 | { | |
32 | .compatible = "atmel,at91sam9x5-clk-slow", | |
33 | .data = of_at91sam9x5_clk_slow_setup, | |
34 | }, | |
35 | { /*sentinel*/ } | |
36 | }; | |
37 | ||
38 | static void __init of_at91sam9x5_sckc_setup(struct device_node *np) | |
39 | { | |
40 | struct device_node *childnp; | |
41 | void (*clk_setup)(struct device_node *, void __iomem *); | |
42 | const struct of_device_id *clk_id; | |
43 | void __iomem *regbase = of_iomap(np, 0); | |
44 | ||
45 | if (!regbase) | |
46 | return; | |
47 | ||
48 | for_each_child_of_node(np, childnp) { | |
49 | clk_id = of_match_node(sckc_clk_ids, childnp); | |
50 | if (!clk_id) | |
51 | continue; | |
52 | clk_setup = clk_id->data; | |
53 | clk_setup(childnp, regbase); | |
54 | } | |
55 | } | |
56 | CLK_OF_DECLARE(at91sam9x5_clk_sckc, "atmel,at91sam9x5-sckc", | |
57 | of_at91sam9x5_sckc_setup); |