diff options
Diffstat (limited to 'target/linux/ipq806x/patches-5.15/111-v5.19-03-PM-devfreq-passive-Reduce-duplicate-code-when-passiv.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-5.15/111-v5.19-03-PM-devfreq-passive-Reduce-duplicate-code-when-passiv.patch | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-5.15/111-v5.19-03-PM-devfreq-passive-Reduce-duplicate-code-when-passiv.patch b/target/linux/ipq806x/patches-5.15/111-v5.19-03-PM-devfreq-passive-Reduce-duplicate-code-when-passiv.patch new file mode 100644 index 0000000000..cb10bd1b62 --- /dev/null +++ b/target/linux/ipq806x/patches-5.15/111-v5.19-03-PM-devfreq-passive-Reduce-duplicate-code-when-passiv.patch @@ -0,0 +1,110 @@ +From 05723e71234b60a1a47313ea1a889797ec648f1c Mon Sep 17 00:00:00 2001 +From: Chanwoo Choi <cw00.choi@samsung.com> +Date: Tue, 2 Mar 2021 17:22:50 +0900 +Subject: [PATCH 3/5] PM / devfreq: passive: Reduce duplicate code when + passive_devfreq case + +In order to keep the consistent coding style between passive_devfreq +and passive_cpufreq, use common code for handling required opp property. +Also remove the unneed conditional statement and unify the comment +of both passive_devfreq and passive_cpufreq when getting the target frequency. + +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/governor_passive.c | 66 ++++-------------------------- + 1 file changed, 8 insertions(+), 58 deletions(-) + +--- a/drivers/devfreq/governor_passive.c ++++ b/drivers/devfreq/governor_passive.c +@@ -93,65 +93,16 @@ static int get_target_freq_with_devfreq( + = (struct devfreq_passive_data *)devfreq->data; + struct devfreq *parent_devfreq = (struct devfreq *)p_data->parent; + unsigned long child_freq = ULONG_MAX; +- struct dev_pm_opp *opp, *p_opp; + int i, count; + +- /* +- * If the devfreq device with passive governor has the specific method +- * to determine the next frequency, should use the get_target_freq() +- * of struct devfreq_passive_data. +- */ +- if (p_data->get_target_freq) +- return p_data->get_target_freq(devfreq, freq); +- +- /* +- * If the parent and passive devfreq device uses the OPP table, +- * get the next frequency by using the OPP table. +- */ +- +- /* +- * - parent devfreq device uses the governors except for passive. +- * - passive devfreq device uses the passive governor. +- * +- * Each devfreq has the OPP table. After deciding the new frequency +- * from the governor of parent devfreq device, the passive governor +- * need to get the index of new frequency on OPP table of parent +- * device. And then the index is used for getting the suitable +- * new frequency for passive devfreq device. +- */ +- if (!devfreq->profile || !devfreq->profile->freq_table +- || devfreq->profile->max_state <= 0) +- return -EINVAL; +- +- /* +- * The passive governor have to get the correct frequency from OPP +- * list of parent device. Because in this case, *freq is temporary +- * value which is decided by ondemand governor. +- */ +- if (devfreq->opp_table && parent_devfreq->opp_table) { +- p_opp = devfreq_recommended_opp(parent_devfreq->dev.parent, +- freq, 0); +- if (IS_ERR(p_opp)) +- return PTR_ERR(p_opp); +- +- opp = dev_pm_opp_xlate_required_opp(parent_devfreq->opp_table, +- devfreq->opp_table, p_opp); +- dev_pm_opp_put(p_opp); +- +- if (IS_ERR(opp)) +- goto no_required_opp; +- +- *freq = dev_pm_opp_get_freq(opp); +- dev_pm_opp_put(opp); +- +- return 0; +- } ++ /* Get target freq via required opps */ ++ child_freq = get_target_freq_by_required_opp(parent_devfreq->dev.parent, ++ parent_devfreq->opp_table, ++ devfreq->opp_table, freq); ++ if (child_freq) ++ goto out; + +-no_required_opp: +- /* +- * Get the OPP table's index of decided frequency by governor +- * of parent device. +- */ ++ /* Use interpolation if required opps is not available */ + for (i = 0; i < parent_devfreq->profile->max_state; i++) + if (parent_devfreq->profile->freq_table[i] == *freq) + break; +@@ -159,7 +110,6 @@ no_required_opp: + if (i == parent_devfreq->profile->max_state) + return -EINVAL; + +- /* Get the suitable frequency by using index of parent device. */ + if (i < devfreq->profile->max_state) { + child_freq = devfreq->profile->freq_table[i]; + } else { +@@ -167,7 +117,7 @@ no_required_opp: + child_freq = devfreq->profile->freq_table[count - 1]; + } + +- /* Return the suitable frequency for passive device. */ ++out: + *freq = child_freq; + + return 0; |