git.openwrt.org Git - openwrt/staging/jow.git/blob

   1 From 713472e53e6e53c985e283782b0fd76b8ecfd47e Mon Sep 17 00:00:00 2001
   2 From: Chanwoo Choi <cw00.choi@samsung.com>
   3 Date: Mon, 1 Mar 2021 02:07:29 +0900
   4 Subject: [PATCH 1/5] PM / devfreq: Export devfreq_get_freq_range symbol within
   5  devfreq
   6
   7 In order to get frequency range within devfreq governors,
   8 export devfreq_get_freq_range symbol within devfreq.
   9
  10 Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
  11 Tested-by: Chen-Yu Tsai <wenst@chromium.org>
  12 Tested-by: Johnson Wang <johnson.wang@mediatek.com>
  13 Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
  14 ---
  15  drivers/devfreq/devfreq.c  | 20 ++++++++++++--------
  16  drivers/devfreq/governor.h |  2 ++
  17  2 files changed, 14 insertions(+), 8 deletions(-)
  18
  19 --- a/drivers/devfreq/devfreq.c
  20 +++ b/drivers/devfreq/devfreq.c
  21 @@ -112,16 +112,16 @@ static unsigned long find_available_max_
  22  }
  23
  24  /**
  25 - * get_freq_range() - Get the current freq range
  26 + * devfreq_get_freq_range() - Get the current freq range
  27   * @devfreq:   the devfreq instance
  28   * @min_freq:  the min frequency
  29   * @max_freq:  the max frequency
  30   *
  31   * This takes into consideration all constraints.
  32   */
  33 -static void get_freq_range(struct devfreq *devfreq,
  34 -                          unsigned long *min_freq,
  35 -                          unsigned long *max_freq)
  36 +void devfreq_get_freq_range(struct devfreq *devfreq,
  37 +                           unsigned long *min_freq,
  38 +                           unsigned long *max_freq)
  39  {
  40         unsigned long *freq_table = devfreq->profile->freq_table;
  41         s32 qos_min_freq, qos_max_freq;
  42 @@ -158,6 +158,7 @@ static void get_freq_range(struct devfre
  43         if (*min_freq > *max_freq)
  44                 *min_freq = *max_freq;
  45  }
  46 +EXPORT_SYMBOL(devfreq_get_freq_range);
  47
  48  /**
  49   * devfreq_get_freq_level() - Lookup freq_table for the frequency
  50 @@ -418,7 +419,7 @@ int devfreq_update_target(struct devfreq
  51         err = devfreq->governor->get_target_freq(devfreq, &freq);
  52         if (err)
  53                 return err;
  54 -       get_freq_range(devfreq, &min_freq, &max_freq);
  55 +       devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
  56
  57         if (freq < min_freq) {
  58                 freq = min_freq;
  59 @@ -784,6 +785,7 @@ struct devfreq *devfreq_add_device(struc
  60  {
  61         struct devfreq *devfreq;
  62         struct devfreq_governor *governor;
  63 +       unsigned long min_freq, max_freq;
  64         int err = 0;
  65
  66         if (!dev || !profile || !governor_name) {
  67 @@ -848,6 +850,8 @@ struct devfreq *devfreq_add_device(struc
  68                 goto err_dev;
  69         }
  70
  71 +       devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
  72 +
  73         devfreq->suspend_freq = dev_pm_opp_get_suspend_opp_freq(dev);
  74         devfreq->opp_table = dev_pm_opp_get_opp_table(dev);
  75         if (IS_ERR(devfreq->opp_table))
  76 @@ -1559,7 +1563,7 @@ static ssize_t min_freq_show(struct devi
  77         unsigned long min_freq, max_freq;
  78
  79         mutex_lock(&df->lock);
  80 -       get_freq_range(df, &min_freq, &max_freq);
  81 +       devfreq_get_freq_range(df, &min_freq, &max_freq);
  82         mutex_unlock(&df->lock);
  83
  84         return sprintf(buf, "%lu\n", min_freq);
  85 @@ -1613,7 +1617,7 @@ static ssize_t max_freq_show(struct devi
  86         unsigned long min_freq, max_freq;
  87
  88         mutex_lock(&df->lock);
  89 -       get_freq_range(df, &min_freq, &max_freq);
  90 +       devfreq_get_freq_range(df, &min_freq, &max_freq);
  91         mutex_unlock(&df->lock);
  92
  93         return sprintf(buf, "%lu\n", max_freq);
  94 @@ -1927,7 +1931,7 @@ static int devfreq_summary_show(struct s
  95
  96                 mutex_lock(&devfreq->lock);
  97                 cur_freq = devfreq->previous_freq;
  98 -               get_freq_range(devfreq, &min_freq, &max_freq);
  99 +               devfreq_get_freq_range(devfreq, &min_freq, &max_freq);
 100                 timer = devfreq->profile->timer;
 101
 102                 if (IS_SUPPORTED_ATTR(devfreq->governor->attrs, POLLING_INTERVAL))
 103 --- a/drivers/devfreq/governor.h
 104 +++ b/drivers/devfreq/governor.h
 105 @@ -86,6 +86,8 @@ int devfreq_remove_governor(struct devfr
 106
 107  int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
 108  int devfreq_update_target(struct devfreq *devfreq, unsigned long freq);
 109 +void devfreq_get_freq_range(struct devfreq *devfreq, unsigned long *min_freq,
 110 +                           unsigned long *max_freq);
 111
 112  static inline int devfreq_update_stats(struct devfreq *df)
 113  {