From: Dmitry Osipenko Date: Mon, 4 Nov 2019 21:56:12 +0000 (+0300) Subject: PM / devfreq: tegra30: Disable consecutive interrupts when appropriate X-Git-Tag: v5.10.7~3811^2~2^2^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=88ec816446fab2012c73c7096fb8b1924fe6837c;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: Dmitry Osipenko Signed-off-by: Chanwoo Choi --- diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index 4a5d513..852bde6 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);