lkml.org 
[lkml]   [2019]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH RFC 1/9] OPP: Add and export helpers to get avg/peak bw
Date
Add and export helpers 'dev_pm_opp_get_avg_bw()' and
'dev_pm_opp_get_peak_bw()' that can be used to get the
average and peak bandwidth values read from device tree
when present.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
drivers/opp/core.c | 38 ++++++++++++++++++++++++++++++++++++++
include/linux/pm_opp.h | 12 ++++++++++++
2 files changed, 50 insertions(+)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 4fcc2b9259c5..addaf7aae9ae 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -149,6 +149,44 @@ unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_get_level);

+/**
+ * dev_pm_opp_get_avg_bw() - Gets the average bandwidth corresponding to an
+ * available opp
+ * @opp: opp for which average bandwidth has to be returned for
+ *
+ * Return: average bandwidth read from device tree corresponding to the
+ * opp, else return 0.
+ */
+unsigned int dev_pm_opp_get_avg_bw(struct dev_pm_opp *opp)
+{
+ if (IS_ERR_OR_NULL(opp) || !opp->available) {
+ pr_err("%s: Invalid parameters\n", __func__);
+ return 0;
+ }
+
+ return opp->bandwidth->avg;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_avg_bw);
+
+/**
+ * dev_pm_opp_get_peak_bw() - Gets the peak bandwidth corresponding to an
+ * available opp
+ * @opp: opp for which peak bandwidth has to be returned for
+ *
+ * Return: peak bandwidth read from device tree corresponding to the
+ * opp, else return 0.
+ */
+unsigned int dev_pm_opp_get_peak_bw(struct dev_pm_opp *opp)
+{
+ if (IS_ERR_OR_NULL(opp) || !opp->available) {
+ pr_err("%s: Invalid parameters\n", __func__);
+ return 0;
+ }
+
+ return opp->bandwidth->peak;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_peak_bw);
+
/**
* dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
* @opp: opp for which turbo mode is being verified
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 80a49d1fa9a8..82ff8e2e1ff7 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -99,6 +99,8 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);

unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp);
+unsigned int dev_pm_opp_get_avg_bw(struct dev_pm_opp *opp);
+unsigned int dev_pm_opp_get_peak_bw(struct dev_pm_opp *opp);

bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);

@@ -179,6 +181,16 @@ static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
return 0;
}

+static inline unsigned int dev_pm_opp_get_avg_bw(struct dev_pm_opp *opp)
+{
+ return 0;
+}
+
+static inline unsigned int dev_pm_opp_get_peak_bw(struct dev_pm_opp *opp)
+{
+ return 0;
+}
+
static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
{
return false;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
\
 
 \ /
  Last update: 2019-03-28 16:29    [W:0.137 / U:8.632 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site