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authorViresh Kumar <viresh.kumar@linaro.org>2013-08-14 18:08:24 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-10-31 03:11:08 +0400
commitd4019f0a92ab802f385cc9c8ad3ab7b5449712cb (patch)
treeebd06695585e457ae1bf219653452b111e7508db /drivers/cpufreq/maple-cpufreq.c
parent7dbf694db6ac7c759599316d50d7050efcbd512a (diff)
downloadlinux-d4019f0a92ab802f385cc9c8ad3ab7b5449712cb.tar.xz
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/maple-cpufreq.c')
-rw-r--r--drivers/cpufreq/maple-cpufreq.c18
1 files changed, 1 insertions, 17 deletions
diff --git a/drivers/cpufreq/maple-cpufreq.c b/drivers/cpufreq/maple-cpufreq.c
index 4e2da0874bfb..c4dfa42a75ac 100644
--- a/drivers/cpufreq/maple-cpufreq.c
+++ b/drivers/cpufreq/maple-cpufreq.c
@@ -69,8 +69,6 @@ static struct cpufreq_frequency_table maple_cpu_freqs[] = {
*/
static int maple_pmode_cur;
-static DEFINE_MUTEX(maple_switch_mutex);
-
static const u32 *maple_pmode_data;
static int maple_pmode_max;
@@ -133,21 +131,7 @@ static int maple_scom_query_freq(void)
static int maple_cpufreq_target(struct cpufreq_policy *policy,
unsigned int index)
{
- struct cpufreq_freqs freqs;
- int rc;
-
- mutex_lock(&maple_switch_mutex);
-
- freqs.old = maple_cpu_freqs[maple_pmode_cur].frequency;
- freqs.new = maple_cpu_freqs[index].frequency;
-
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
- rc = maple_scom_switch_freq(index);
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
- mutex_unlock(&maple_switch_mutex);
-
- return rc;
+ return maple_scom_switch_freq(index);
}
static unsigned int maple_cpufreq_get_speed(unsigned int cpu)