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From 713472e53e6e53c985e283782b0fd76b8ecfd47e Mon Sep 17 00:00:00 2001
From: Chanwoo Choi <cw00.choi@samsung.com>
Date: Mon, 1 Mar 2021 02:07:29 +0900
Subject: [PATCH 1/5] PM / devfreq: Export devfreq_get_freq_range symbol within
devfreq
In order to get frequency range within devfreq governors,
export devfreq_get_freq_range symbol within devfreq.
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Johnson Wang <johnson.wang@mediatek.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---
drivers/devfreq/devfreq.c | 20 ++++++++++++--------
drivers/devfreq/governor.h | 2 ++
2 files changed, 14 insertions(+), 8 deletions(-)
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -112,16 +112,16 @@ static unsigned long find_available_max_
}
/**
- * get_freq_range() - Get the current freq range
+ * devfreq_get_freq_range() - Get the current freq range
* @devfreq: the devfreq instance
* @min_freq: the min frequency
* @max_freq: the max frequency
*
* This takes into consideration all constraints.
*/
-static void get_freq_range(struct devfreq *devfreq,
- unsigned long *min_freq,
- unsigned long *max_freq)
+void devfreq_get_freq_range(struct devfreq *devfreq,
+ unsigned long *min_freq,
+ unsigned long *max_freq)
{
unsigned long *freq_table = devfreq->profile->freq_table;
s32 qos_min_freq, qos_max_freq;
@@ -158,6 +158,7 @@ static void get_freq_range(struct devfre
if (*min_freq > *max_freq)
*min_freq = *max_freq;
}
+EXPORT_SYMBOL(devfreq_get_freq_range);
/**
* devfreq_get_freq_level() - Lookup freq_table for the frequency
@@ -418,7 +419,7 @@ int devfreq_update_target(struct devfreq
err = devfreq->governor->get_target_freq(devfreq, &freq);
if (err)
return err;
- get_freq_range(devfreq, &min_freq, &max_freq);
+ devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
if (freq < min_freq) {
freq = min_freq;
@@ -784,6 +785,7 @@ struct devfreq *devfreq_add_device(struc
{
struct devfreq *devfreq;
struct devfreq_governor *governor;
+ unsigned long min_freq, max_freq;
int err = 0;
if (!dev || !profile || !governor_name) {
@@ -848,6 +850,8 @@ struct devfreq *devfreq_add_device(struc
goto err_dev;
}
+ devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
+
devfreq->suspend_freq = dev_pm_opp_get_suspend_opp_freq(dev);
devfreq->opp_table = dev_pm_opp_get_opp_table(dev);
if (IS_ERR(devfreq->opp_table))
@@ -1559,7 +1563,7 @@ static ssize_t min_freq_show(struct devi
unsigned long min_freq, max_freq;
mutex_lock(&df->lock);
- get_freq_range(df, &min_freq, &max_freq);
+ devfreq_get_freq_range(df, &min_freq, &max_freq);
mutex_unlock(&df->lock);
return sprintf(buf, "%lu\n", min_freq);
@@ -1613,7 +1617,7 @@ static ssize_t max_freq_show(struct devi
unsigned long min_freq, max_freq;
mutex_lock(&df->lock);
- get_freq_range(df, &min_freq, &max_freq);
+ devfreq_get_freq_range(df, &min_freq, &max_freq);
mutex_unlock(&df->lock);
return sprintf(buf, "%lu\n", max_freq);
@@ -1927,7 +1931,7 @@ static int devfreq_summary_show(struct s
mutex_lock(&devfreq->lock);
cur_freq = devfreq->previous_freq;
- get_freq_range(devfreq, &min_freq, &max_freq);
+ devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
timer = devfreq->profile->timer;
if (IS_SUPPORTED_ATTR(devfreq->governor->attrs, POLLING_INTERVAL))
--- a/drivers/devfreq/governor.h
+++ b/drivers/devfreq/governor.h
@@ -86,6 +86,8 @@ int devfreq_remove_governor(struct devfr
int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
int devfreq_update_target(struct devfreq *devfreq, unsigned long freq);
+void devfreq_get_freq_range(struct devfreq *devfreq, unsigned long *min_freq,
+ unsigned long *max_freq);
static inline int devfreq_update_stats(struct devfreq *df)
{
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