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Subject[PATCH V2 Resend 16/16] cpufreq: unicore2: 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 also do clk_get() once instead of doing it again and again in target & init.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/cpufreq/unicore2-cpufreq.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/cpufreq/unicore2-cpufreq.c b/drivers/cpufreq/unicore2-cpufreq.c
index 653ae29..951152f 100644
--- a/drivers/cpufreq/unicore2-cpufreq.c
+++ b/drivers/cpufreq/unicore2-cpufreq.c
@@ -11,6 +11,7 @@
* published by the Free Software Foundation.
*/

+#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
@@ -33,26 +34,16 @@ static int ucv2_verify_speed(struct cpufreq_policy *policy)
return 0;
}

-static unsigned int ucv2_getspeed(unsigned int cpu)
-{
- struct clk *mclk = clk_get(NULL, "MAIN_CLK");
-
- if (cpu)
- return 0;
- return clk_get_rate(mclk)/1000;
-}
-
static int ucv2_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
- unsigned int cur = ucv2_getspeed(0);
+ unsigned int cur = policy->cur;
struct cpufreq_freqs freqs;
- struct clk *mclk = clk_get(NULL, "MAIN_CLK");

cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);

- if (!clk_set_rate(mclk, target_freq * 1000)) {
+ if (!clk_set_rate(policy->clk, target_freq * 1000)) {
freqs.old = cur;
freqs.new = target_freq;
}
@@ -66,9 +57,13 @@ static int __init ucv2_cpu_init(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
+
policy->min = policy->cpuinfo.min_freq = 250000;
policy->max = policy->cpuinfo.max_freq = 1000000;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+ policy->clk = clk_get(NULL, "MAIN_CLK");
+ if (IS_ERR(policy->clk))
+ return PTR_ERR(policy->clk);
return 0;
}

@@ -76,7 +71,7 @@ static struct cpufreq_driver ucv2_driver = {
.flags = CPUFREQ_STICKY,
.verify = ucv2_verify_speed,
.target = ucv2_target,
- .get = ucv2_getspeed,
+ .get = cpufreq_generic_get,
.init = ucv2_cpu_init,
.name = "UniCore-II",
};
--
1.7.12.rc2.18.g61b472e


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