diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2014-01-09 20:38:43 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-17 02:00:44 +0100 |
| commit | 652ed95d5fa6074b3c4ea245deb0691f1acb6656 (patch) | |
| tree | 7b01079f3a582b0d6b08f541a8a344440bec8eae /drivers/cpufreq/omap-cpufreq.c | |
| parent | 0ad04fb30db0341d0b1134e2f592d9146c9abb64 (diff) | |
| download | linux-652ed95d5fa6074b3c4ea245deb0691f1acb6656.tar.bz2 | |
cpufreq: introduce cpufreq_generic_get() routine
CPUFreq drivers that use clock frameworks interface,i.e. clk_get_rate(),
to get CPUs clk rate, have similar sort of code used in most of them.
This patch adds a generic ->get() which will do the same thing for them.
All those drivers are required to now is to set .get to cpufreq_generic_get()
and set their clk pointer in policy->clk during ->init().
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/omap-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/omap-cpufreq.c | 32 |
1 files changed, 10 insertions, 22 deletions
diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c index 5de1e5f73eca..590f5b66d181 100644 --- a/drivers/cpufreq/omap-cpufreq.c +++ b/drivers/cpufreq/omap-cpufreq.c @@ -36,21 +36,9 @@ 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) { int r, ret; @@ -58,11 +46,11 @@ static int omap_target(struct cpufreq_policy *policy, unsigned int index) 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", @@ -100,7 +88,7 @@ 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)) { @@ -108,7 +96,7 @@ 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; } } @@ -126,9 +114,9 @@ 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); @@ -149,7 +137,7 @@ static int omap_cpu_init(struct cpufreq_policy *policy) freq_table_free(); fail: - clk_put(mpu_clk); + clk_put(policy->clk); return result; } @@ -157,7 +145,7 @@ 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; } @@ -165,7 +153,7 @@ static struct cpufreq_driver omap_driver = { .flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK, .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", |