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clk: qcom: common: Handle runtime power management in qcom_cc_really_probe

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Add support for runtime power management in qcom_cc_really_probe() to
commonize it across all the clock controllers. The runtime power management
is not required for all clock controllers, hence handle the rpm based on
use_rpm flag in clock controller descriptor.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
Link: https://lore.kernel.org/r/20250530-videocc-pll-multi-pd-voting-v5-5-02303b3a582d@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Jagadeesh Kona 2025-05-30 18:50:50 +05:30 committed by Bjorn Andersson
parent 0f698c1635
commit c0b6627369
2 changed files with 29 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/clk/qcom/common.c
View File

@ -9,6 +9,7 @@
#include <linux/platform_device.h>
#include <linux/clk-provider.h>
#include <linux/interconnect-clk.h>
#include <linux/pm_runtime.h>
#include <linux/reset-controller.h>
#include <linux/of.h>
@ -304,6 +305,16 @@ int qcom_cc_really_probe(struct device *dev,
if (ret < 0 && ret != -EEXIST)
return ret;
if (desc->use_rpm) {
ret = devm_pm_runtime_enable(dev);
if (ret)
return ret;
ret = pm_runtime_resume_and_get(dev);
if (ret)
return ret;
}
reset = &cc->reset;
reset->rcdev.of_node = dev->of_node;
reset->rcdev.ops = &qcom_reset_ops;
@ -314,23 +325,25 @@ int qcom_cc_really_probe(struct device *dev,
ret = devm_reset_controller_register(dev, &reset->rcdev);
if (ret)
return ret;
goto put_rpm;
if (desc->gdscs && desc->num_gdscs) {
scd = devm_kzalloc(dev, sizeof(*scd), GFP_KERNEL);
if (!scd)
return -ENOMEM;
if (!scd) {
ret = -ENOMEM;
goto put_rpm;
}
scd->dev = dev;
scd->scs = desc->gdscs;
scd->num = desc->num_gdscs;
scd->pd_list = cc->pd_list;
ret = gdsc_register(scd, &reset->rcdev, regmap);
if (ret)
return ret;
goto put_rpm;
ret = devm_add_action_or_reset(dev, qcom_cc_gdsc_unregister,
scd);
if (ret)
return ret;
goto put_rpm;
}
cc->rclks = rclks;
@ -341,7 +354,7 @@ int qcom_cc_really_probe(struct device *dev,
for (i = 0; i < num_clk_hws; i++) {
ret = devm_clk_hw_register(dev, clk_hws[i]);
if (ret)
return ret;
goto put_rpm;
}
for (i = 0; i < num_clks; i++) {
@ -350,14 +363,20 @@ int qcom_cc_really_probe(struct device *dev,
ret = devm_clk_register_regmap(dev, rclks[i]);
if (ret)
return ret;
goto put_rpm;
}
ret = devm_of_clk_add_hw_provider(dev, qcom_cc_clk_hw_get, cc);
if (ret)
return ret;
goto put_rpm;
return qcom_cc_icc_register(dev, desc);
ret = qcom_cc_icc_register(dev, desc);
put_rpm:
if (desc->use_rpm)
pm_runtime_put(dev);
return ret;
}
EXPORT_SYMBOL_GPL(qcom_cc_really_probe);

1
drivers/clk/qcom/common.h
View File

@ -38,6 +38,7 @@ struct qcom_cc_desc {
const struct qcom_icc_hws_data *icc_hws;
size_t num_icc_hws;
unsigned int icc_first_node_id;
bool use_rpm;
};
/**