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-rw-r--r--arch/arm/mach-sa1100/generic.c81
1 files changed, 19 insertions, 62 deletions
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index f25b6119e028..d4ea142c4edd 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -42,74 +42,31 @@ EXPORT_SYMBOL(reset_status);
42/* 42/*
43 * This table is setup for a 3.6864MHz Crystal. 43 * This table is setup for a 3.6864MHz Crystal.
44 */ 44 */
45static const unsigned short cclk_frequency_100khz[NR_FREQS] = { 45struct cpufreq_frequency_table sa11x0_freq_table[NR_FREQS+1] = {
46 590, /* 59.0 MHz */ 46 { .frequency = 59000, /* 59.0 MHz */},
47 737, /* 73.7 MHz */ 47 { .frequency = 73700, /* 73.7 MHz */},
48 885, /* 88.5 MHz */ 48 { .frequency = 88500, /* 88.5 MHz */},
49 1032, /* 103.2 MHz */ 49 { .frequency = 103200, /* 103.2 MHz */},
50 1180, /* 118.0 MHz */ 50 { .frequency = 118000, /* 118.0 MHz */},
51 1327, /* 132.7 MHz */ 51 { .frequency = 132700, /* 132.7 MHz */},
52 1475, /* 147.5 MHz */ 52 { .frequency = 147500, /* 147.5 MHz */},
53 1622, /* 162.2 MHz */ 53 { .frequency = 162200, /* 162.2 MHz */},
54 1769, /* 176.9 MHz */ 54 { .frequency = 176900, /* 176.9 MHz */},
55 1917, /* 191.7 MHz */ 55 { .frequency = 191700, /* 191.7 MHz */},
56 2064, /* 206.4 MHz */ 56 { .frequency = 206400, /* 206.4 MHz */},
57 2212, /* 221.2 MHz */ 57 { .frequency = 221200, /* 221.2 MHz */},
58 2359, /* 235.9 MHz */ 58 { .frequency = 235900, /* 235.9 MHz */},
59 2507, /* 250.7 MHz */ 59 { .frequency = 250700, /* 250.7 MHz */},
60 2654, /* 265.4 MHz */ 60 { .frequency = 265400, /* 265.4 MHz */},
61 2802 /* 280.2 MHz */ 61 { .frequency = 280200, /* 280.2 MHz */},
62 { .frequency = CPUFREQ_TABLE_END, },
62}; 63};
63 64
64/* rounds up(!) */
65unsigned int sa11x0_freq_to_ppcr(unsigned int khz)
66{
67 int i;
68
69 khz /= 100;
70
71 for (i = 0; i < NR_FREQS; i++)
72 if (cclk_frequency_100khz[i] >= khz)
73 break;
74
75 return i;
76}
77
78unsigned int sa11x0_ppcr_to_freq(unsigned int idx)
79{
80 unsigned int freq = 0;
81 if (idx < NR_FREQS)
82 freq = cclk_frequency_100khz[idx] * 100;
83 return freq;
84}
85
86
87/* make sure that only the "userspace" governor is run -- anything else wouldn't make sense on
88 * this platform, anyway.
89 */
90int sa11x0_verify_speed(struct cpufreq_policy *policy)
91{
92 unsigned int tmp;
93 if (policy->cpu)
94 return -EINVAL;
95
96 cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
97
98 /* make sure that at least one frequency is within the policy */
99 tmp = cclk_frequency_100khz[sa11x0_freq_to_ppcr(policy->min)] * 100;
100 if (tmp > policy->max)
101 policy->max = tmp;
102
103 cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
104
105 return 0;
106}
107
108unsigned int sa11x0_getspeed(unsigned int cpu) 65unsigned int sa11x0_getspeed(unsigned int cpu)
109{ 66{
110 if (cpu) 67 if (cpu)
111 return 0; 68 return 0;
112 return cclk_frequency_100khz[PPCR & 0xf] * 100; 69 return sa11x0_freq_table[PPCR & 0xf].frequency;
113} 70}
114 71
115/* 72/*