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Subject[PATCH V2 Resend 09/16] cpufreq: omap: use cpufreq_generic_get() routine
Date
We have common infrastructure available with us for getting a CPUs clk rate.
Lets use it for this driver.

We don't need a global variable to hold clock anymore.

Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/cpufreq/omap-cpufreq.c | 32 ++++++++++----------------------
1 file changed, 10 insertions(+), 22 deletions(-)

diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
index be6d143..0c018dc 100644
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@@ -36,32 +36,20 @@

static struct cpufreq_frequency_table *freq_table;
static atomic_t freq_table_users = ATOMIC_INIT(0);
-static struct clk *mpu_clk;
static struct device *mpu_dev;
static struct regulator *mpu_reg;

-static unsigned int omap_getspeed(unsigned int cpu)
-{
- unsigned long rate;
-
- if (cpu >= NR_CPUS)
- return 0;
-
- rate = clk_get_rate(mpu_clk) / 1000;
- return rate;
-}
-
static int omap_target(struct cpufreq_policy *policy, unsigned int index)
{
struct dev_pm_opp *opp;
unsigned long freq, volt = 0, volt_old = 0, tol = 0;
unsigned int old_freq, new_freq;

- old_freq = omap_getspeed(policy->cpu);
+ old_freq = policy->cur;
new_freq = freq_table[index].frequency;

freq = new_freq * 1000;
- ret = clk_round_rate(mpu_clk, freq);
+ ret = clk_round_rate(policy->clk, freq);
if (IS_ERR_VALUE(ret)) {
dev_warn(mpu_dev,
"CPUfreq: Cannot find matching frequency for %lu\n",
@@ -99,7 +87,7 @@ static int omap_target(struct cpufreq_policy *policy, unsigned int index)
}
}

- ret = clk_set_rate(mpu_clk, new_freq * 1000);
+ ret = clk_set_rate(policy->clk, new_freq * 1000);

/* scaling down? scale voltage after frequency */
if (mpu_reg && (new_freq < old_freq)) {
@@ -107,7 +95,7 @@ static int omap_target(struct cpufreq_policy *policy, unsigned int index)
if (r < 0) {
dev_warn(mpu_dev, "%s: unable to scale voltage down.\n",
__func__);
- clk_set_rate(mpu_clk, old_freq * 1000);
+ clk_set_rate(policy->clk, old_freq * 1000);
return r;
}
}
@@ -125,9 +113,9 @@ static int omap_cpu_init(struct cpufreq_policy *policy)
{
int result;

- mpu_clk = clk_get(NULL, "cpufreq_ck");
- if (IS_ERR(mpu_clk))
- return PTR_ERR(mpu_clk);
+ policy->clk = clk_get(NULL, "cpufreq_ck");
+ if (IS_ERR(policy->clk))
+ return PTR_ERR(policy->clk);

if (!freq_table) {
result = dev_pm_opp_init_cpufreq_table(mpu_dev, &freq_table);
@@ -148,7 +136,7 @@ static int omap_cpu_init(struct cpufreq_policy *policy)

freq_table_free();
fail:
- clk_put(mpu_clk);
+ clk_put(policy->clk);
return result;
}

@@ -156,7 +144,7 @@ static int omap_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
freq_table_free();
- clk_put(mpu_clk);
+ clk_put(policy->clk);
return 0;
}

@@ -164,7 +152,7 @@ static struct cpufreq_driver omap_driver = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = omap_target,
- .get = omap_getspeed,
+ .get = cpufreq_generic_get,
.init = omap_cpu_init,
.exit = omap_cpu_exit,
.name = "omap",
--
1.7.12.rc2.18.g61b472e


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