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cpufreq: OMAP: dont support !freq_table 

OMAP2+ all have frequency tables, hence the hacks we had for older
silicon do not need to be carried forward. As part of this change,
use cpufreq_frequency_table_target to find the best match for
frequency requested.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Nishanth Menon 2011-05-26 19:39:17 -07:00 committed by Kevin Hilman
parent a820ffa8fd
commit bf2a359d50
1 changed files with 32 additions and 33 deletions
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65
drivers/cpufreq/omap-cpufreq.c
View File

@ -35,8 +35,6 @@
#include <mach/hardware.h>
#define VERY_HI_RATE 900000000
#ifdef CONFIG_SMP
struct lpj_info {
unsigned long ref;
@ -54,20 +52,9 @@ static struct device *mpu_dev;
static int omap_verify_speed(struct cpufreq_policy *policy)
{
if (freq_table)
return cpufreq_frequency_table_verify(policy, freq_table);
if (policy->cpu)
if (!freq_table)
return -EINVAL;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
policy->min = clk_round_rate(mpu_clk, policy->min * 1000) / 1000;
policy->max = clk_round_rate(mpu_clk, policy->max * 1000) / 1000;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
return 0;
return cpufreq_frequency_table_verify(policy, freq_table);
}
static unsigned int omap_getspeed(unsigned int cpu)
@ -85,18 +72,31 @@ static int omap_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
int i, ret = 0;
unsigned int i;
int ret = 0;
struct cpufreq_freqs freqs;
/* Ensure desired rate is within allowed range. Some govenors
* (ondemand) will just pass target_freq=0 to get the minimum. */
if (target_freq < policy->min)
target_freq = policy->min;
if (target_freq > policy->max)
target_freq = policy->max;
if (!freq_table) {
dev_err(mpu_dev, "%s: cpu%d: no freq table!\n", __func__,
policy->cpu);
return -EINVAL;
}
ret = cpufreq_frequency_table_target(policy, freq_table, target_freq,
relation, &i);
if (ret) {
dev_dbg(mpu_dev, "%s: cpu%d: no freq match for %d(ret=%d)\n",
__func__, policy->cpu, target_freq, ret);
return ret;
}
freqs.new = freq_table[i].frequency;
if (!freqs.new) {
dev_err(mpu_dev, "%s: cpu%d: no match for freq %d\n", __func__,
policy->cpu, target_freq);
return -EINVAL;
}
freqs.old = omap_getspeed(policy->cpu);
freqs.new = clk_round_rate(mpu_clk, target_freq * 1000) / 1000;
freqs.cpu = policy->cpu;
if (freqs.old == freqs.new && policy->cur == freqs.new)
@ -162,19 +162,18 @@ static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy)
return -EINVAL;
policy->cur = policy->min = policy->max = omap_getspeed(policy->cpu);
opp_init_cpufreq_table(mpu_dev, &freq_table);
result = opp_init_cpufreq_table(mpu_dev, &freq_table);
if (freq_table) {
result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (!result)
cpufreq_frequency_table_get_attr(freq_table,
policy->cpu);
} else {
policy->cpuinfo.min_freq = clk_round_rate(mpu_clk, 0) / 1000;
policy->cpuinfo.max_freq = clk_round_rate(mpu_clk,
VERY_HI_RATE) / 1000;
if (result) {
dev_err(mpu_dev, "%s: cpu%d: failed creating freq table[%d]\n",
__func__, policy->cpu, result);
return result;
}
result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (!result)
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
policy->min = policy->cpuinfo.min_freq;
policy->max = policy->cpuinfo.max_freq;
policy->cur = omap_getspeed(policy->cpu);