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Diffstat (limited to 'arch/sh/boards/overdrive/time.c')
-rw-r--r-- | arch/sh/boards/overdrive/time.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/arch/sh/boards/overdrive/time.c b/arch/sh/boards/overdrive/time.c deleted file mode 100644 index 68533690e097..000000000000 --- a/arch/sh/boards/overdrive/time.c +++ /dev/null | |||
@@ -1,119 +0,0 @@ | |||
1 | /* | ||
2 | * arch/sh/boards/overdrive/time.c | ||
3 | * | ||
4 | * Copyright (C) 2000 Stuart Menefy (stuart.menefy@st.com) | ||
5 | * Copyright (C) 2002 Paul Mundt (lethal@chaoticdreams.org) | ||
6 | * | ||
7 | * May be copied or modified under the terms of the GNU General Public | ||
8 | * License. See linux/COPYING for more information. | ||
9 | * | ||
10 | * STMicroelectronics Overdrive Support. | ||
11 | */ | ||
12 | |||
13 | void od_time_init(void) | ||
14 | { | ||
15 | struct frqcr_data { | ||
16 | unsigned short frqcr; | ||
17 | struct { | ||
18 | unsigned char multiplier; | ||
19 | unsigned char divisor; | ||
20 | } factor[3]; | ||
21 | }; | ||
22 | |||
23 | static struct frqcr_data st40_frqcr_table[] = { | ||
24 | { 0x000, {{1,1}, {1,1}, {1,2}}}, | ||
25 | { 0x002, {{1,1}, {1,1}, {1,4}}}, | ||
26 | { 0x004, {{1,1}, {1,1}, {1,8}}}, | ||
27 | { 0x008, {{1,1}, {1,2}, {1,2}}}, | ||
28 | { 0x00A, {{1,1}, {1,2}, {1,4}}}, | ||
29 | { 0x00C, {{1,1}, {1,2}, {1,8}}}, | ||
30 | { 0x011, {{1,1}, {2,3}, {1,6}}}, | ||
31 | { 0x013, {{1,1}, {2,3}, {1,3}}}, | ||
32 | { 0x01A, {{1,1}, {1,2}, {1,4}}}, | ||
33 | { 0x01C, {{1,1}, {1,2}, {1,8}}}, | ||
34 | { 0x023, {{1,1}, {2,3}, {1,3}}}, | ||
35 | { 0x02C, {{1,1}, {1,2}, {1,8}}}, | ||
36 | { 0x048, {{1,2}, {1,2}, {1,4}}}, | ||
37 | { 0x04A, {{1,2}, {1,2}, {1,6}}}, | ||
38 | { 0x04C, {{1,2}, {1,2}, {1,8}}}, | ||
39 | { 0x05A, {{1,2}, {1,3}, {1,6}}}, | ||
40 | { 0x05C, {{1,2}, {1,3}, {1,6}}}, | ||
41 | { 0x063, {{1,2}, {1,4}, {1,4}}}, | ||
42 | { 0x06C, {{1,2}, {1,4}, {1,8}}}, | ||
43 | { 0x091, {{1,3}, {1,3}, {1,6}}}, | ||
44 | { 0x093, {{1,3}, {1,3}, {1,6}}}, | ||
45 | { 0x0A3, {{1,3}, {1,6}, {1,6}}}, | ||
46 | { 0x0DA, {{1,4}, {1,4}, {1,8}}}, | ||
47 | { 0x0DC, {{1,4}, {1,4}, {1,8}}}, | ||
48 | { 0x0EC, {{1,4}, {1,8}, {1,8}}}, | ||
49 | { 0x123, {{1,4}, {1,4}, {1,8}}}, | ||
50 | { 0x16C, {{1,4}, {1,8}, {1,8}}}, | ||
51 | }; | ||
52 | |||
53 | struct memclk_data { | ||
54 | unsigned char multiplier; | ||
55 | unsigned char divisor; | ||
56 | }; | ||
57 | static struct memclk_data st40_memclk_table[8] = { | ||
58 | {1,1}, // 000 | ||
59 | {1,2}, // 001 | ||
60 | {1,3}, // 010 | ||
61 | {2,3}, // 011 | ||
62 | {1,4}, // 100 | ||
63 | {1,6}, // 101 | ||
64 | {1,8}, // 110 | ||
65 | {1,8} // 111 | ||
66 | }; | ||
67 | |||
68 | unsigned long pvr; | ||
69 | |||
70 | /* | ||
71 | * This should probably be moved into the SH3 probing code, and then | ||
72 | * use the processor structure to determine which CPU we are running | ||
73 | * on. | ||
74 | */ | ||
75 | pvr = ctrl_inl(CCN_PVR); | ||
76 | printk("PVR %08x\n", pvr); | ||
77 | |||
78 | if (((pvr >> CCN_PVR_CHIP_SHIFT) & CCN_PVR_CHIP_MASK) == CCN_PVR_CHIP_ST40STB1) { | ||
79 | /* | ||
80 | * Unfortunatly the STB1 FRQCR values are different from the | ||
81 | * 7750 ones. | ||
82 | */ | ||
83 | struct frqcr_data *d; | ||
84 | int a; | ||
85 | unsigned long memclkcr; | ||
86 | struct memclk_data *e; | ||
87 | |||
88 | for (a=0; a<ARRAY_SIZE(st40_frqcr_table); a++) { | ||
89 | d = &st40_frqcr_table[a]; | ||
90 | if (d->frqcr == (frqcr & 0x1ff)) | ||
91 | break; | ||
92 | } | ||
93 | if (a == ARRAY_SIZE(st40_frqcr_table)) { | ||
94 | d = st40_frqcr_table; | ||
95 | printk("ERROR: Unrecognised FRQCR value, using default multipliers\n"); | ||
96 | } | ||
97 | |||
98 | memclkcr = ctrl_inl(CLOCKGEN_MEMCLKCR); | ||
99 | e = &st40_memclk_table[memclkcr & MEMCLKCR_RATIO_MASK]; | ||
100 | |||
101 | printk("Clock multipliers: CPU: %d/%d Bus: %d/%d Mem: %d/%d Periph: %d/%d\n", | ||
102 | d->factor[0].multiplier, d->factor[0].divisor, | ||
103 | d->factor[1].multiplier, d->factor[1].divisor, | ||
104 | e->multiplier, e->divisor, | ||
105 | d->factor[2].multiplier, d->factor[2].divisor); | ||
106 | |||
107 | current_cpu_data.master_clock = current_cpu_data.module_clock * | ||
108 | d->factor[2].divisor / | ||
109 | d->factor[2].multiplier; | ||
110 | current_cpu_data.bus_clock = current_cpu_data.master_clock * | ||
111 | d->factor[1].multiplier / | ||
112 | d->factor[1].divisor; | ||
113 | current_cpu_data.memory_clock = current_cpu_data.master_clock * | ||
114 | e->multiplier / e->divisor; | ||
115 | current_cpu_data.cpu_clock = current_cpu_data.master_clock * | ||
116 | d->factor[0].multiplier / | ||
117 | d->factor[0].divisor; | ||
118 | } | ||
119 | |||