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authorDavid S. Miller <davem@davemloft.net>2005-08-18 17:35:38 -0400
committerDavid S. Miller <davem@davemloft.net>2005-08-18 17:35:38 -0400
commit2cab224d1f6557e7014601f251d6a41982963e6b (patch)
tree24a234e496ba3425c5513adc377cdd77261fe609 /arch/sparc64/kernel/us3_cpufreq.c
parent6be382ea0c767a81be0e7980400b9b18167b3261 (diff)
[SPARC64]: Fix 2 bugs in cpufreq drivers.
1) cpufreq wants frequenceis in KHZ not MHZ 2) provide ->get() method so curfreq node is created Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/us3_cpufreq.c')
-rw-r--r--arch/sparc64/kernel/us3_cpufreq.c29
1 files changed, 25 insertions, 4 deletions
diff --git a/arch/sparc64/kernel/us3_cpufreq.c b/arch/sparc64/kernel/us3_cpufreq.c
index 18fe54b8aa55..9080e7cd4bb0 100644
--- a/arch/sparc64/kernel/us3_cpufreq.c
+++ b/arch/sparc64/kernel/us3_cpufreq.c
@@ -56,7 +56,7 @@ static void write_safari_cfg(unsigned long val)
56 56
57static unsigned long get_current_freq(unsigned int cpu, unsigned long safari_cfg) 57static unsigned long get_current_freq(unsigned int cpu, unsigned long safari_cfg)
58{ 58{
59 unsigned long clock_tick = sparc64_get_clock_tick(cpu); 59 unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
60 unsigned long ret; 60 unsigned long ret;
61 61
62 switch (safari_cfg & SAFARI_CFG_DIV_MASK) { 62 switch (safari_cfg & SAFARI_CFG_DIV_MASK) {
@@ -76,6 +76,26 @@ static unsigned long get_current_freq(unsigned int cpu, unsigned long safari_cfg
76 return ret; 76 return ret;
77} 77}
78 78
79static unsigned int us3_freq_get(unsigned int cpu)
80{
81 cpumask_t cpus_allowed;
82 unsigned long reg;
83 unsigned int ret;
84
85 if (!cpu_online(cpu))
86 return 0;
87
88 cpus_allowed = current->cpus_allowed;
89 set_cpus_allowed(current, cpumask_of_cpu(cpu));
90
91 reg = read_safari_cfg();
92 ret = get_current_freq(cpu, reg);
93
94 set_cpus_allowed(current, cpus_allowed);
95
96 return ret;
97}
98
79static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index) 99static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
80{ 100{
81 unsigned long new_bits, new_freq, reg; 101 unsigned long new_bits, new_freq, reg;
@@ -88,7 +108,7 @@ static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
88 cpus_allowed = current->cpus_allowed; 108 cpus_allowed = current->cpus_allowed;
89 set_cpus_allowed(current, cpumask_of_cpu(cpu)); 109 set_cpus_allowed(current, cpumask_of_cpu(cpu));
90 110
91 new_freq = sparc64_get_clock_tick(cpu); 111 new_freq = sparc64_get_clock_tick(cpu) / 1000;
92 switch (index) { 112 switch (index) {
93 case 0: 113 case 0:
94 new_bits = SAFARI_CFG_DIV_1; 114 new_bits = SAFARI_CFG_DIV_1;
@@ -150,7 +170,7 @@ static int us3_freq_verify(struct cpufreq_policy *policy)
150static int __init us3_freq_cpu_init(struct cpufreq_policy *policy) 170static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
151{ 171{
152 unsigned int cpu = policy->cpu; 172 unsigned int cpu = policy->cpu;
153 unsigned long clock_tick = sparc64_get_clock_tick(cpu); 173 unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
154 struct cpufreq_frequency_table *table = 174 struct cpufreq_frequency_table *table =
155 &us3_freq_table[cpu].table[0]; 175 &us3_freq_table[cpu].table[0];
156 176
@@ -206,9 +226,10 @@ static int __init us3_freq_init(void)
206 memset(us3_freq_table, 0, 226 memset(us3_freq_table, 0,
207 (NR_CPUS * sizeof(struct us3_freq_percpu_info))); 227 (NR_CPUS * sizeof(struct us3_freq_percpu_info)));
208 228
229 driver->init = us3_freq_cpu_init;
209 driver->verify = us3_freq_verify; 230 driver->verify = us3_freq_verify;
210 driver->target = us3_freq_target; 231 driver->target = us3_freq_target;
211 driver->init = us3_freq_cpu_init; 232 driver->get = us3_freq_get;
212 driver->exit = us3_freq_cpu_exit; 233 driver->exit = us3_freq_cpu_exit;
213 driver->owner = THIS_MODULE, 234 driver->owner = THIS_MODULE,
214 strcpy(driver->name, "UltraSPARC-III"); 235 strcpy(driver->name, "UltraSPARC-III");