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Subject[PATCH V2 Resend 11/16] cpufreq: s3c: 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: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/cpufreq/s3c24xx-cpufreq.c | 10 +++-------
drivers/cpufreq/s3c64xx-cpufreq.c | 33 ++++++++++++---------------------
2 files changed, 15 insertions(+), 28 deletions(-)

diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
index 4850882..7be6c2d 100644
--- a/drivers/cpufreq/s3c24xx-cpufreq.c
+++ b/drivers/cpufreq/s3c24xx-cpufreq.c
@@ -355,11 +355,6 @@ static int s3c_cpufreq_target(struct cpufreq_policy *policy,
return -EINVAL;
}

-static unsigned int s3c_cpufreq_get(unsigned int cpu)
-{
- return clk_get_rate(clk_arm) / 1000;
-}
-
struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)
{
struct clk *clk;
@@ -373,6 +368,7 @@ struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)

static int s3c_cpufreq_init(struct cpufreq_policy *policy)
{
+ policy->clk = clk_arm;
return cpufreq_generic_init(policy, ftab, cpu_cur.info->latency);
}

@@ -408,7 +404,7 @@ static int s3c_cpufreq_suspend(struct cpufreq_policy *policy)
{
suspend_pll.frequency = clk_get_rate(_clk_mpll);
suspend_pll.driver_data = __raw_readl(S3C2410_MPLLCON);
- suspend_freq = s3c_cpufreq_get(0) * 1000;
+ suspend_freq = clk_get_rate(clk_arm);

return 0;
}
@@ -450,7 +446,7 @@ static int s3c_cpufreq_resume(struct cpufreq_policy *policy)
static struct cpufreq_driver s3c24xx_driver = {
.flags = CPUFREQ_STICKY,
.target = s3c_cpufreq_target,
- .get = s3c_cpufreq_get,
+ .get = cpufreq_generic_get,
.init = s3c_cpufreq_init,
.suspend = s3c_cpufreq_suspend,
.resume = s3c_cpufreq_resume,
diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c
index 67e302e..02feae3 100644
--- a/drivers/cpufreq/s3c64xx-cpufreq.c
+++ b/drivers/cpufreq/s3c64xx-cpufreq.c
@@ -19,7 +19,6 @@
#include <linux/regulator/consumer.h>
#include <linux/module.h>

-static struct clk *armclk;
static struct regulator *vddarm;
static unsigned long regulator_latency;

@@ -54,14 +53,6 @@ static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
};
#endif

-static unsigned int s3c64xx_cpufreq_get_speed(unsigned int cpu)
-{
- if (cpu != 0)
- return 0;
-
- return clk_get_rate(armclk) / 1000;
-}
-
static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int index)
{
@@ -69,7 +60,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int old_freq, new_freq;
int ret;

- old_freq = clk_get_rate(armclk) / 1000;
+ old_freq = clk_get_rate(policy->clk) / 1000;
new_freq = s3c64xx_freq_table[index].frequency;
dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[index].driver_data];

@@ -86,7 +77,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
}
#endif

- ret = clk_set_rate(armclk, new_freq * 1000);
+ ret = clk_set_rate(policy->clk, new_freq * 1000);
if (ret < 0) {
pr_err("Failed to set rate %dkHz: %d\n",
new_freq, ret);
@@ -101,7 +92,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
if (ret != 0) {
pr_err("Failed to set VDDARM for %dkHz: %d\n",
new_freq, ret);
- if (clk_set_rate(armclk, old_freq * 1000) < 0)
+ if (clk_set_rate(policy->clk, old_freq * 1000) < 0)
pr_err("Failed to restore original clock rate\n");

return ret;
@@ -110,7 +101,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
#endif

pr_debug("Set actual frequency %lukHz\n",
- clk_get_rate(armclk) / 1000);
+ clk_get_rate(policy->clk) / 1000);

return 0;
}
@@ -169,11 +160,11 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
return -ENODEV;
}

- armclk = clk_get(NULL, "armclk");
- if (IS_ERR(armclk)) {
+ policy->clk = clk_get(NULL, "armclk");
+ if (IS_ERR(policy->clk)) {
pr_err("Unable to obtain ARMCLK: %ld\n",
- PTR_ERR(armclk));
- return PTR_ERR(armclk);
+ PTR_ERR(policy->clk));
+ return PTR_ERR(policy->clk);
}

#ifdef CONFIG_REGULATOR
@@ -193,7 +184,7 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
unsigned long r;

/* Check for frequencies we can generate */
- r = clk_round_rate(armclk, freq->frequency * 1000);
+ r = clk_round_rate(policy->clk, freq->frequency * 1000);
r /= 1000;
if (r != freq->frequency) {
pr_debug("%dkHz unsupported by clock\n",
@@ -203,7 +194,7 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)

/* If we have no regulator then assume startup
* frequency is the maximum we can support. */
- if (!vddarm && freq->frequency > s3c64xx_cpufreq_get_speed(0))
+ if (!vddarm && freq->frequency > clk_get_rate(policy->clk) / 1000)
freq->frequency = CPUFREQ_ENTRY_INVALID;

freq++;
@@ -219,7 +210,7 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
pr_err("Failed to configure frequency table: %d\n",
ret);
regulator_put(vddarm);
- clk_put(armclk);
+ clk_put(policy->clk);
}

return ret;
@@ -229,7 +220,7 @@ static struct cpufreq_driver s3c64xx_cpufreq_driver = {
.flags = 0,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = s3c64xx_cpufreq_set_target,
- .get = s3c64xx_cpufreq_get_speed,
+ .get = cpufreq_generic_get,
.init = s3c64xx_cpufreq_driver_init,
.name = "s3c",
};
--
1.7.12.rc2.18.g61b472e


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