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253b0887 PM |
1 | #include <linux/clk.h> |
2 | #include <linux/compiler.h> | |
4c7eb4eb | 3 | #include <linux/slab.h> |
6881e8bf | 4 | #include <linux/io.h> |
6d803ba7 | 5 | #include <linux/clkdev.h> |
253b0887 PM |
6 | #include <asm/clock.h> |
7 | ||
8 | static struct clk master_clk = { | |
253b0887 PM |
9 | .flags = CLK_ENABLE_ON_INIT, |
10 | .rate = CONFIG_SH_PCLK_FREQ, | |
11 | }; | |
12 | ||
13 | static struct clk peripheral_clk = { | |
253b0887 PM |
14 | .parent = &master_clk, |
15 | .flags = CLK_ENABLE_ON_INIT, | |
16 | }; | |
17 | ||
18 | static struct clk bus_clk = { | |
253b0887 PM |
19 | .parent = &master_clk, |
20 | .flags = CLK_ENABLE_ON_INIT, | |
21 | }; | |
22 | ||
23 | static struct clk cpu_clk = { | |
253b0887 PM |
24 | .parent = &master_clk, |
25 | .flags = CLK_ENABLE_ON_INIT, | |
26 | }; | |
27 | ||
28 | /* | |
29 | * The ordering of these clocks matters, do not change it. | |
30 | */ | |
31 | static struct clk *onchip_clocks[] = { | |
32 | &master_clk, | |
33 | &peripheral_clk, | |
34 | &bus_clk, | |
35 | &cpu_clk, | |
36 | }; | |
37 | ||
53041f02 MD |
38 | #define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk } |
39 | ||
40 | static struct clk_lookup lookups[] = { | |
41 | /* main clocks */ | |
42 | CLKDEV_CON_ID("master_clk", &master_clk), | |
43 | CLKDEV_CON_ID("peripheral_clk", &peripheral_clk), | |
44 | CLKDEV_CON_ID("bus_clk", &bus_clk), | |
45 | CLKDEV_CON_ID("cpu_clk", &cpu_clk), | |
46 | }; | |
47 | ||
253b0887 PM |
48 | int __init __deprecated cpg_clk_init(void) |
49 | { | |
50 | int i, ret = 0; | |
51 | ||
52 | for (i = 0; i < ARRAY_SIZE(onchip_clocks); i++) { | |
53 | struct clk *clk = onchip_clocks[i]; | |
54 | arch_init_clk_ops(&clk->ops, i); | |
55 | if (clk->ops) | |
56 | ret |= clk_register(clk); | |
57 | } | |
58 | ||
53041f02 MD |
59 | clkdev_add_table(lookups, ARRAY_SIZE(lookups)); |
60 | ||
0776d602 PM |
61 | clk_add_alias("tmu_fck", NULL, "peripheral_clk", NULL); |
62 | clk_add_alias("mtu2_fck", NULL, "peripheral_clk", NULL); | |
63 | clk_add_alias("cmt_fck", NULL, "peripheral_clk", NULL); | |
64 | clk_add_alias("sci_ick", NULL, "peripheral_clk", NULL); | |
65 | ||
253b0887 PM |
66 | return ret; |
67 | } | |
68 | ||
69 | /* | |
25985edc | 70 | * Placeholder for compatibility, until the lazy CPUs do this |
253b0887 PM |
71 | * on their own. |
72 | */ | |
73 | int __init __weak arch_clk_init(void) | |
74 | { | |
75 | return cpg_clk_init(); | |
76 | } |