3a911b8c2d
Backport devfreq new cpufreq based PASSIVE governor needed for devfreq based fab and cache scaling. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
114 lines
3.8 KiB
Diff
114 lines
3.8 KiB
Diff
From 713472e53e6e53c985e283782b0fd76b8ecfd47e Mon Sep 17 00:00:00 2001
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From: Chanwoo Choi <cw00.choi@samsung.com>
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Date: Mon, 1 Mar 2021 02:07:29 +0900
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Subject: [PATCH 1/5] PM / devfreq: Export devfreq_get_freq_range symbol within
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devfreq
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In order to get frequency range within devfreq governors,
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export devfreq_get_freq_range symbol within devfreq.
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Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
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Tested-by: Chen-Yu Tsai <wenst@chromium.org>
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Tested-by: Johnson Wang <johnson.wang@mediatek.com>
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Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
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---
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drivers/devfreq/devfreq.c | 20 ++++++++++++--------
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drivers/devfreq/governor.h | 2 ++
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2 files changed, 14 insertions(+), 8 deletions(-)
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--- a/drivers/devfreq/devfreq.c
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+++ b/drivers/devfreq/devfreq.c
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@@ -112,16 +112,16 @@ static unsigned long find_available_max_
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}
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/**
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- * get_freq_range() - Get the current freq range
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+ * devfreq_get_freq_range() - Get the current freq range
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* @devfreq: the devfreq instance
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* @min_freq: the min frequency
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* @max_freq: the max frequency
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*
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* This takes into consideration all constraints.
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*/
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-static void get_freq_range(struct devfreq *devfreq,
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- unsigned long *min_freq,
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- unsigned long *max_freq)
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+void devfreq_get_freq_range(struct devfreq *devfreq,
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+ unsigned long *min_freq,
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+ unsigned long *max_freq)
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{
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unsigned long *freq_table = devfreq->profile->freq_table;
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s32 qos_min_freq, qos_max_freq;
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@@ -158,6 +158,7 @@ static void get_freq_range(struct devfre
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if (*min_freq > *max_freq)
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*min_freq = *max_freq;
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}
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+EXPORT_SYMBOL(devfreq_get_freq_range);
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/**
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* devfreq_get_freq_level() - Lookup freq_table for the frequency
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@@ -418,7 +419,7 @@ int devfreq_update_target(struct devfreq
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err = devfreq->governor->get_target_freq(devfreq, &freq);
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if (err)
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return err;
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- get_freq_range(devfreq, &min_freq, &max_freq);
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+ devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
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if (freq < min_freq) {
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freq = min_freq;
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@@ -785,6 +786,7 @@ struct devfreq *devfreq_add_device(struc
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{
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struct devfreq *devfreq;
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struct devfreq_governor *governor;
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+ unsigned long min_freq, max_freq;
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int err = 0;
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if (!dev || !profile || !governor_name) {
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@@ -849,6 +851,8 @@ struct devfreq *devfreq_add_device(struc
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goto err_dev;
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}
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+ devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
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+
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devfreq->suspend_freq = dev_pm_opp_get_suspend_opp_freq(dev);
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devfreq->opp_table = dev_pm_opp_get_opp_table(dev);
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if (IS_ERR(devfreq->opp_table))
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@@ -1561,7 +1565,7 @@ static ssize_t min_freq_show(struct devi
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unsigned long min_freq, max_freq;
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mutex_lock(&df->lock);
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- get_freq_range(df, &min_freq, &max_freq);
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+ devfreq_get_freq_range(df, &min_freq, &max_freq);
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mutex_unlock(&df->lock);
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return sprintf(buf, "%lu\n", min_freq);
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@@ -1615,7 +1619,7 @@ static ssize_t max_freq_show(struct devi
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unsigned long min_freq, max_freq;
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mutex_lock(&df->lock);
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- get_freq_range(df, &min_freq, &max_freq);
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+ devfreq_get_freq_range(df, &min_freq, &max_freq);
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mutex_unlock(&df->lock);
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return sprintf(buf, "%lu\n", max_freq);
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@@ -1929,7 +1933,7 @@ static int devfreq_summary_show(struct s
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mutex_lock(&devfreq->lock);
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cur_freq = devfreq->previous_freq;
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- get_freq_range(devfreq, &min_freq, &max_freq);
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+ devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
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timer = devfreq->profile->timer;
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if (IS_SUPPORTED_ATTR(devfreq->governor->attrs, POLLING_INTERVAL))
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--- a/drivers/devfreq/governor.h
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+++ b/drivers/devfreq/governor.h
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@@ -86,6 +86,8 @@ int devfreq_remove_governor(struct devfr
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int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
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int devfreq_update_target(struct devfreq *devfreq, unsigned long freq);
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+void devfreq_get_freq_range(struct devfreq *devfreq, unsigned long *min_freq,
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+ unsigned long *max_freq);
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static inline int devfreq_update_stats(struct devfreq *df)
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{
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