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path: root/drivers/cpufreq/db8500-cpufreq.c
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Diffstat (limited to 'drivers/cpufreq/db8500-cpufreq.c')
-rw-r--r--drivers/cpufreq/db8500-cpufreq.c40
1 files changed, 22 insertions, 18 deletions
diff --git a/drivers/cpufreq/db8500-cpufreq.c b/drivers/cpufreq/db8500-cpufreq.c
index d90456a809f..f5002015d82 100644
--- a/drivers/cpufreq/db8500-cpufreq.c
+++ b/drivers/cpufreq/db8500-cpufreq.c
@@ -12,30 +12,35 @@
12#include <linux/cpufreq.h> 12#include <linux/cpufreq.h>
13#include <linux/delay.h> 13#include <linux/delay.h>
14#include <linux/slab.h> 14#include <linux/slab.h>
15#include <linux/mfd/db8500-prcmu.h> 15#include <linux/mfd/dbx500-prcmu.h>
16#include <mach/id.h> 16#include <mach/id.h>
17 17
18static struct cpufreq_frequency_table freq_table[] = { 18static struct cpufreq_frequency_table freq_table[] = {
19 [0] = { 19 [0] = {
20 .index = 0, 20 .index = 0,
21 .frequency = 300000, 21 .frequency = 200000,
22 }, 22 },
23 [1] = { 23 [1] = {
24 .index = 1, 24 .index = 1,
25 .frequency = 600000, 25 .frequency = 300000,
26 }, 26 },
27 [2] = { 27 [2] = {
28 /* Used for MAX_OPP, if available */
29 .index = 2, 28 .index = 2,
30 .frequency = CPUFREQ_TABLE_END, 29 .frequency = 600000,
31 }, 30 },
32 [3] = { 31 [3] = {
32 /* Used for MAX_OPP, if available */
33 .index = 3, 33 .index = 3,
34 .frequency = CPUFREQ_TABLE_END, 34 .frequency = CPUFREQ_TABLE_END,
35 }, 35 },
36 [4] = {
37 .index = 4,
38 .frequency = CPUFREQ_TABLE_END,
39 },
36}; 40};
37 41
38static enum arm_opp idx2opp[] = { 42static enum arm_opp idx2opp[] = {
43 ARM_EXTCLK,
39 ARM_50_OPP, 44 ARM_50_OPP,
40 ARM_100_OPP, 45 ARM_100_OPP,
41 ARM_MAX_OPP 46 ARM_MAX_OPP
@@ -72,13 +77,13 @@ static int db8500_cpufreq_target(struct cpufreq_policy *policy,
72 77
73 freqs.old = policy->cur; 78 freqs.old = policy->cur;
74 freqs.new = freq_table[idx].frequency; 79 freqs.new = freq_table[idx].frequency;
75 freqs.cpu = policy->cpu;
76 80
77 if (freqs.old == freqs.new) 81 if (freqs.old == freqs.new)
78 return 0; 82 return 0;
79 83
80 /* pre-change notification */ 84 /* pre-change notification */
81 cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); 85 for_each_cpu(freqs.cpu, policy->cpus)
86 cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
82 87
83 /* request the PRCM unit for opp change */ 88 /* request the PRCM unit for opp change */
84 if (prcmu_set_arm_opp(idx2opp[idx])) { 89 if (prcmu_set_arm_opp(idx2opp[idx])) {
@@ -87,7 +92,8 @@ static int db8500_cpufreq_target(struct cpufreq_policy *policy,
87 } 92 }
88 93
89 /* post change notification */ 94 /* post change notification */
90 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); 95 for_each_cpu(freqs.cpu, policy->cpus)
96 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
91 97
92 return 0; 98 return 0;
93} 99}
@@ -103,17 +109,19 @@ static unsigned int db8500_cpufreq_getspeed(unsigned int cpu)
103 109
104static int __cpuinit db8500_cpufreq_init(struct cpufreq_policy *policy) 110static int __cpuinit db8500_cpufreq_init(struct cpufreq_policy *policy)
105{ 111{
106 int res; 112 int i, res;
107 int i;
108 113
109 BUILD_BUG_ON(ARRAY_SIZE(idx2opp) + 1 != ARRAY_SIZE(freq_table)); 114 BUILD_BUG_ON(ARRAY_SIZE(idx2opp) + 1 != ARRAY_SIZE(freq_table));
110 115
111 if (cpu_is_u8500v2() && !prcmu_is_u8400()) { 116 if (!prcmu_is_u8400()) {
112 freq_table[0].frequency = 400000; 117 freq_table[1].frequency = 400000;
113 freq_table[1].frequency = 800000; 118 freq_table[2].frequency = 800000;
114 if (prcmu_has_arm_maxopp()) 119 if (prcmu_has_arm_maxopp())
115 freq_table[2].frequency = 1000000; 120 freq_table[3].frequency = 1000000;
116 } 121 }
122 pr_info("db8500-cpufreq : Available frequencies:\n");
123 for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++)
124 pr_info(" %d Mhz\n", freq_table[i].frequency/1000);
117 125
118 /* get policy fields based on the table */ 126 /* get policy fields based on the table */
119 res = cpufreq_frequency_table_cpuinfo(policy, freq_table); 127 res = cpufreq_frequency_table_cpuinfo(policy, freq_table);
@@ -127,10 +135,6 @@ static int __cpuinit db8500_cpufreq_init(struct cpufreq_policy *policy)
127 policy->min = policy->cpuinfo.min_freq; 135 policy->min = policy->cpuinfo.min_freq;
128 policy->max = policy->cpuinfo.max_freq; 136 policy->max = policy->cpuinfo.max_freq;
129 policy->cur = db8500_cpufreq_getspeed(policy->cpu); 137 policy->cur = db8500_cpufreq_getspeed(policy->cpu);
130
131 for (i = 0; freq_table[i].frequency != policy->cur; i++)
132 ;
133
134 policy->governor = CPUFREQ_DEFAULT_GOVERNOR; 138 policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
135 139
136 /* 140 /*