From: Sibi Sankar <sibis@codeaurora.org>
To: viresh.kumar@linaro.org, sboyd@kernel.org,
georgi.djakov@linaro.org, bjorn.andersson@linaro.org,
saravanak@google.com, mka@chromium.org
Cc: nm@ti.com, agross@kernel.org, david.brown@linaro.org,
robh+dt@kernel.org, mark.rutland@arm.com, rjw@rjwysocki.net,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
dianders@chromium.org, vincent.guittot@linaro.org,
amit.kucheria@linaro.org, ulf.hansson@linaro.org,
lukasz.luba@arm.com, sudeep.holla@arm.com,
Sibi Sankar <sibis@codeaurora.org>
Subject: [PATCH v4 05/12] OPP: Add and export helper to set bandwidth
Date: Tue, 5 May 2020 01:52:36 +0530 [thread overview]
Message-ID: <20200504202243.5476-6-sibis@codeaurora.org> (raw)
In-Reply-To: <20200504202243.5476-1-sibis@codeaurora.org>
Add and export 'dev_pm_opp_set_bw' to set the bandwidth
levels associated with an OPP for a given frequency.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
v4:
https://patchwork.kernel.org/patch/11019737/
* Pass device opp to set bw levels [Bjorn]
drivers/opp/core.c | 43 ++++++++++++++++++++++++++++++++++++++++++
include/linux/pm_opp.h | 6 ++++++
2 files changed, 49 insertions(+)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 7f7060079bb28..f157e2d768d76 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -791,6 +791,49 @@ static int _set_required_opps(struct device *dev,
return ret;
}
+/**
+ * dev_pm_opp_set_bw() - sets bandwidth levels corresponding to an available opp
+ * @dev: device for which we do this operation
+ * @opp: opp based on which the bandwidth levels are to be configured
+ *
+ * This configures the bandwidth to the levels specified
+ * by the OPP.
+ *
+ * Return: 0 on success or a negative error value.
+ */
+int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp)
+{
+ struct opp_table *opp_table;
+ int ret = -EINVAL;
+ int i;
+
+ if (IS_ERR_OR_NULL(opp) || !opp->available) {
+ dev_err(dev, "%s: Invalid parameters\n", __func__);
+ return -EINVAL;
+ }
+
+ opp_table = _find_opp_table(dev);
+ if (IS_ERR(opp_table)) {
+ dev_err(dev, "%s: device opp table doesn't exist\n", __func__);
+ return PTR_ERR(opp_table);
+ }
+
+ if (opp_table->paths) {
+ for (i = 0; i < opp_table->path_count; i++) {
+ ret = icc_set_bw(opp_table->paths[i],
+ opp->bandwidth[i].avg,
+ opp->bandwidth[i].peak);
+ if (ret)
+ dev_err(dev, "Failed to set bandwidth[%d]: %d\n",
+ i, ret);
+ }
+ }
+
+ dev_pm_opp_put_opp_table(opp_table);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_set_bw);
+
/**
* dev_pm_opp_set_rate() - Configure new OPP based on frequency
* @dev: device for which we do this operation
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 639bc0382ee02..87ba295080a2b 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -154,6 +154,7 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names
void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
+int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp);
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
void dev_pm_opp_remove_table(struct device *dev);
@@ -352,6 +353,11 @@ static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_f
return -ENOTSUPP;
}
+static inline int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp)
+{
+ return -ENOTSUPP;
+}
+
static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
{
return -ENOTSUPP;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2020-05-04 20:24 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-04 20:22 [PATCH v4 00/12] DDR/L3 Scaling support on SDM845 and SC7180 SoCs Sibi Sankar
2020-05-04 20:22 ` [PATCH v4 01/12] arm64: dts: qcom: sdm845: Add SoC compatible to MTP Sibi Sankar
2020-05-06 12:32 ` Amit Kucheria
2020-05-04 20:22 ` [PATCH v4 02/12] cpufreq: blacklist SDM845 in cpufreq-dt-platdev Sibi Sankar
2020-05-06 12:32 ` Amit Kucheria
2020-05-04 20:22 ` [PATCH v4 03/12] cpufreq: blacklist SC7180 " Sibi Sankar
2020-05-06 12:33 ` Amit Kucheria
2020-05-04 20:22 ` [PATCH v4 04/12] OPP: Add and export helper to update voltage Sibi Sankar
2020-05-05 4:45 ` Viresh Kumar
2020-05-05 7:16 ` Sibi Sankar
2020-05-04 20:22 ` Sibi Sankar [this message]
2020-05-04 20:22 ` [PATCH v4 06/12] cpufreq: qcom: Update the bandwidth levels on frequency change Sibi Sankar
2020-05-05 4:50 ` Viresh Kumar
2020-05-05 7:19 ` Sibi Sankar
2020-05-26 17:48 ` Sibi Sankar
2020-05-27 3:53 ` Viresh Kumar
2020-05-27 4:05 ` Viresh Kumar
2020-05-04 20:22 ` [PATCH v4 07/12] OPP: Add and export helper to get icc path count Sibi Sankar
2020-05-04 22:03 ` Saravana Kannan
2020-05-05 7:36 ` Sibi Sankar
2020-05-04 20:22 ` [PATCH v4 08/12] cpufreq: qcom: Disable fast switch when scaling ddr/l3 Sibi Sankar
2020-05-04 20:22 ` [PATCH v4 09/12] dt-bindings: interconnect: Add interconnect-tags bindings Sibi Sankar
2020-05-04 20:22 ` [PATCH v4 10/12] OPP: Add support for setting interconnect-tags Sibi Sankar
2020-05-05 4:56 ` Viresh Kumar
2020-05-05 7:17 ` Sibi Sankar
2020-05-04 20:22 ` [PATCH v4 11/12] arm64: dts: qcom: sdm845: Add cpu OPP tables Sibi Sankar
2020-05-04 20:22 ` [PATCH v4 12/12] arm64: dts: qcom: sc7180: " Sibi Sankar
2020-05-06 12:38 ` [PATCH v4 00/12] DDR/L3 Scaling support on SDM845 and SC7180 SoCs Amit Kucheria
2020-05-06 14:41 ` Sibi Sankar
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