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authorNishanth Menon <nm@ti.com>2011-05-26 19:39:17 -0700
committerKevin Hilman <khilman@ti.com>2011-11-08 11:42:17 -0800
commitbf2a359d504bca3ef71a65e8759d51af4b17055a (patch)
treee54b7c9855df5714482fa99b20f71cd0e9c555b5 /drivers/cpufreq
parenta820ffa8fdbcaa4f5fe32e88db58acca27abbc76 (diff)
downloadop-kernel-dev-bf2a359d504bca3ef71a65e8759d51af4b17055a.zip
op-kernel-dev-bf2a359d504bca3ef71a65e8759d51af4b17055a.tar.gz
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>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/omap-cpufreq.c67
1 files changed, 33 insertions, 34 deletions
diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
index dda32fd..eecb096 100644
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@@ -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);
-
- 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;
+ result = opp_init_cpufreq_table(mpu_dev, &freq_table);
+
+ 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);
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