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authorDmitry Osipenko <digetx@gmail.com>2019-11-05 00:56:12 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2019-11-06 12:04:01 +0900
commit88ec816446fab2012c73c7096fb8b1924fe6837c (patch)
tree963ed65a3f47cb3fcf18d9ad815a766d9742edb1 /drivers/devfreq
parent333abefb281218ab965e34932feecb1be064d535 (diff)
downloadlinux-88ec816446fab2012c73c7096fb8b1924fe6837c.tar.bz2
PM / devfreq: tegra30: Disable consecutive interrupts when appropriate
Consecutive interrupts should be disabled when boosting is completed. Currently the disabling of "lower" interrupt happens only for MCCPU monitor that uses dependency threshold, but even in a case of MCCPU the interrupt isn't getting disabled if CPU's activity is above the threshold. This results in a lot of dummy interrupt requests. The boosting feature is used by both MCCPU and MCALL, boosting should be stopped once it reaches 0 for both of the monitors and regardless of the activity level. The boosting stops to grow once the maximum limit is hit and thus the "upper" interrupt needs to be disabled when the limit is reached. Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r--drivers/devfreq/tegra30-devfreq.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
index 4a5d513904a2..852bde6249c7 100644
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -259,8 +259,10 @@ static void actmon_isr_device(struct tegra_devfreq *tegra,
dev_ctrl |= ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN;
- if (dev->boost_freq >= tegra->max_freq)
+ if (dev->boost_freq >= tegra->max_freq) {
+ dev_ctrl &= ~ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_EN;
dev->boost_freq = tegra->max_freq;
+ }
} else if (intr_status & ACTMON_DEV_INTR_CONSECUTIVE_LOWER) {
/*
* new_boost = old_boost * down_coef
@@ -271,15 +273,10 @@ static void actmon_isr_device(struct tegra_devfreq *tegra,
dev_ctrl |= ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_EN;
- if (dev->boost_freq < (ACTMON_BOOST_FREQ_STEP >> 1))
- dev->boost_freq = 0;
- }
-
- if (dev->config->avg_dependency_threshold) {
- if (dev->avg_count >= dev->config->avg_dependency_threshold)
- dev_ctrl |= ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN;
- else if (dev->boost_freq == 0)
+ if (dev->boost_freq < (ACTMON_BOOST_FREQ_STEP >> 1)) {
dev_ctrl &= ~ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN;
+ dev->boost_freq = 0;
+ }
}
device_writel(dev, dev_ctrl, ACTMON_DEV_CTRL);