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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241125-b4-linux-next-24-11-18-clock-multiple-power-domains-v2-3-a5e7554d7e45@linaro.org> References: <20241125-b4-linux-next-24-11-18-clock-multiple-power-domains-v2-0-a5e7554d7e45@linaro.org> In-Reply-To: <20241125-b4-linux-next-24-11-18-clock-multiple-power-domains-v2-0-a5e7554d7e45@linaro.org> To: Bjorn Andersson , Michael Turquette , Stephen Boyd , Dmitry Baryshkov Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Bryan O'Donoghue X-Mailer: b4 0.15-dev-355e8 When a clock-controller has multiple power-domains we need to attach parent GDSCs in that clock-controller as subdomains of each of the power-domains. Signed-off-by: Bryan O'Donoghue --- drivers/clk/qcom/common.c | 1 + drivers/clk/qcom/gdsc.c | 35 +++++++++++++++++++++++++++++++++++ drivers/clk/qcom/gdsc.h | 1 + 3 files changed, 37 insertions(+) diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c index 7727295c57c8f6672d46d2380e1ff5ec2ac68d42..58a8397eefe51da237a4285d4e7= cee967e19948f 100644 --- a/drivers/clk/qcom/common.c +++ b/drivers/clk/qcom/common.c @@ -338,6 +338,7 @@ int qcom_cc_really_probe(struct device *dev, scd->dev =3D dev; scd->scs =3D desc->gdscs; scd->num =3D desc->num_gdscs; + scd->pd_list =3D cc->pd_list; ret =3D gdsc_register(scd, &reset->rcdev, regmap); if (ret) return ret; diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c index 4fc6f957d0b846cc90e50ef243f23a7a27e66899..cb4afa6d584899f3dafa380d5e0= 1be6de9711737 100644 --- a/drivers/clk/qcom/gdsc.c +++ b/drivers/clk/qcom/gdsc.c @@ -506,6 +506,36 @@ static int gdsc_init(struct gdsc *sc) return ret; } =20 +static int gdsc_add_subdomain_list(struct dev_pm_domain_list *pd_list, + struct generic_pm_domain *subdomain) +{ + int i, ret; + + for (i =3D 0; i < pd_list->num_pds; i++) { + struct device *dev =3D pd_list->pd_devs[i]; + struct generic_pm_domain *genpd =3D pd_to_genpd(dev->pm_domain); + + ret =3D pm_genpd_add_subdomain(genpd, subdomain); + if (ret) + return ret; + } + + return 0; +} + +static void gdsc_remove_subdomain_list(struct dev_pm_domain_list *pd_list, + struct generic_pm_domain *subdomain) +{ + int i; + + for (i =3D 0; i < pd_list->num_pds; i++) { + struct device *dev =3D pd_list->pd_devs[i]; + struct generic_pm_domain *genpd =3D pd_to_genpd(dev->pm_domain); + + pm_genpd_remove_subdomain(genpd, subdomain); + } +} + int gdsc_register(struct gdsc_desc *desc, struct reset_controller_dev *rcdev, struct regmap *regmap) { @@ -558,6 +588,9 @@ int gdsc_register(struct gdsc_desc *desc, ret =3D pm_genpd_add_subdomain(scs[i]->parent, &scs[i]->pd); else if (!IS_ERR_OR_NULL(dev->pm_domain)) ret =3D pm_genpd_add_subdomain(pd_to_genpd(dev->pm_domain), &scs[i]->pd= ); + else if (desc->pd_list) + ret =3D gdsc_add_subdomain_list(desc->pd_list, &scs[i]->pd); + if (ret) return ret; } @@ -580,6 +613,8 @@ void gdsc_unregister(struct gdsc_desc *desc) pm_genpd_remove_subdomain(scs[i]->parent, &scs[i]->pd); else if (!IS_ERR_OR_NULL(dev->pm_domain)) pm_genpd_remove_subdomain(pd_to_genpd(dev->pm_domain), &scs[i]->pd); + else if (desc->pd_list) + gdsc_remove_subdomain_list(desc->pd_list, &scs[i]->pd); } of_genpd_del_provider(dev->of_node); } diff --git a/drivers/clk/qcom/gdsc.h b/drivers/clk/qcom/gdsc.h index 1e2779b823d1c8ca077c9b4cd0a0dbdf5f9457ef..dd843e86c05b2f30e6d9e978681= 580016333839d 100644 --- a/drivers/clk/qcom/gdsc.h +++ b/drivers/clk/qcom/gdsc.h @@ -80,6 +80,7 @@ struct gdsc_desc { struct device *dev; struct gdsc **scs; size_t num; + struct dev_pm_domain_list *pd_list; }; =20 #ifdef CONFIG_QCOM_GDSC --=20 2.45.2