diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-08-14 19:38:24 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-31 00:11:08 +0100 |
| commit | d4019f0a92ab802f385cc9c8ad3ab7b5449712cb (patch) | |
| tree | ebd06695585e457ae1bf219653452b111e7508db /drivers/cpufreq/s5pv210-cpufreq.c | |
| parent | 7dbf694db6ac7c759599316d50d7050efcbd512a (diff) | |
cpufreq: move freq change notifications to cpufreq core
Most of the drivers do following in their ->target_index() routines:
struct cpufreq_freqs freqs;
freqs.old = old freq...
freqs.new = new freq...
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
/* Change rate here */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
This is replicated over all cpufreq drivers today and there doesn't exists a
good enough reason why this shouldn't be moved to cpufreq core instead.
There are few special cases though, like exynos5440, which doesn't do everything
on the call to ->target_index() routine and call some kind of bottom halves for
doing this work, work/tasklet/etc..
They may continue doing notification from their own code as flag:
CPUFREQ_ASYNC_NOTIFICATION is already set for them.
All drivers are also modified in this patch to avoid breaking 'git bisect', as
double notification would happen otherwise.
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Russell King <linux@arm.linux.org.uk>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Lan Tianyu <tianyu.lan@intel.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/s5pv210-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/s5pv210-cpufreq.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c index 5978b94e034..e3973dae28a 100644 --- a/drivers/cpufreq/s5pv210-cpufreq.c +++ b/drivers/cpufreq/s5pv210-cpufreq.c @@ -26,7 +26,6 @@ static struct clk *cpu_clk; static struct clk *dmc0_clk; static struct clk *dmc1_clk; -static struct cpufreq_freqs freqs; static DEFINE_MUTEX(set_freq_lock); /* APLL M,P,S values for 1G/800Mhz */ @@ -179,6 +178,7 @@ static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index) unsigned int priv_index; unsigned int pll_changing = 0; unsigned int bus_speed_changing = 0; + unsigned int old_freq, new_freq; int arm_volt, int_volt; int ret = 0; @@ -193,12 +193,12 @@ static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index) goto exit; } - freqs.old = s5pv210_getspeed(0); - freqs.new = s5pv210_freq_table[index].frequency; + old_freq = s5pv210_getspeed(0); + new_freq = s5pv210_freq_table[index].frequency; /* Finding current running level index */ if (cpufreq_frequency_table_target(policy, s5pv210_freq_table, - freqs.old, CPUFREQ_RELATION_H, + old_freq, CPUFREQ_RELATION_H, &priv_index)) { ret = -EINVAL; goto exit; @@ -207,7 +207,7 @@ static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index) arm_volt = dvs_conf[index].arm_volt; int_volt = dvs_conf[index].int_volt; - if (freqs.new > freqs.old) { + if (new_freq > old_freq) { ret = regulator_set_voltage(arm_regulator, arm_volt, arm_volt_max); if (ret) @@ -219,8 +219,6 @@ static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index) goto exit; } - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - /* Check if there need to change PLL */ if ((index == L0) || (priv_index == L0)) pll_changing = 1; @@ -431,9 +429,7 @@ static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index) } } - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - - if (freqs.new < freqs.old) { + if (new_freq < old_freq) { regulator_set_voltage(int_regulator, int_volt, int_volt_max); |