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author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-08-14 19:38:24 +0530 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-31 00:11:08 +0100 |
commit | d4019f0a92ab802f385cc9c8ad3ab7b5449712cb (patch) | |
tree | ebd06695585e457ae1bf219653452b111e7508db /drivers/cpufreq/sc520_freq.c | |
parent | 7dbf694db6ac7c759599316d50d7050efcbd512a (diff) | |
download | linux-d4019f0a92ab802f385cc9c8ad3ab7b5449712cb.tar.gz |
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/sc520_freq.c')
-rw-r--r-- | drivers/cpufreq/sc520_freq.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c index 6c86452e1737..6adb354e359c 100644 --- a/drivers/cpufreq/sc520_freq.c +++ b/drivers/cpufreq/sc520_freq.c @@ -56,17 +56,8 @@ static unsigned int sc520_freq_get_cpu_frequency(unsigned int cpu) static int sc520_freq_target(struct cpufreq_policy *policy, unsigned int state) { - struct cpufreq_freqs freqs; u8 clockspeed_reg; - freqs.old = sc520_freq_get_cpu_frequency(0); - freqs.new = sc520_freq_table[state].frequency; - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - - pr_debug("attempting to set frequency to %i kHz\n", - sc520_freq_table[state].frequency); - local_irq_disable(); clockspeed_reg = *cpuctl & ~0x03; @@ -74,8 +65,6 @@ static int sc520_freq_target(struct cpufreq_policy *policy, unsigned int state) local_irq_enable(); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - return 0; } |