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[71.255.246.27]) by smtp.googlemail.com with ESMTPSA id r2sm14109637qtc.28.2019.11.20.04.56.53 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 20 Nov 2019 04:56:55 -0800 (PST) From: Thara Gopinath To: edubezval@gmail.com, rui.zhang@intel.com, ulf.hansson@linaro.org, daniel.lezcano@linaro.org, bjorn.andersson@linaro.org, agross@kernel.org Cc: amit.kucheria@verdurent.com, mark.rutland@arm.com, rjw@rjwysocki.net, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [Patch v4 5/7] soc: qcom: Extend RPMh power controller driver to register warming devices. Date: Wed, 20 Nov 2019 07:56:31 -0500 Message-Id: <1574254593-16078-6-git-send-email-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1574254593-16078-1-git-send-email-thara.gopinath@linaro.org> References: <1574254593-16078-1-git-send-email-thara.gopinath@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RPMh power control hosts power domains that can be used as thermal warming devices. Register these power domains with the generic power domain warming device thermal framework. Signed-off-by: Thara Gopinath --- v3->v4: - Introduce a boolean value is_warming_dev in rpmhpd structure to indicate if a generic power domain can be used as a warming device or not.With this change, device tree no longer has to specify which power domain inside the rpmh power domain provider is a warming device. - Move registering of warming devices into a late initcall to ensure that warming devices are registerd after thermal framework is initialized. drivers/soc/qcom/rpmhpd.c | 38 +++++++++++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) -- 2.1.4 diff --git a/drivers/soc/qcom/rpmhpd.c b/drivers/soc/qcom/rpmhpd.c index 9d37534..5666d1f 100644 --- a/drivers/soc/qcom/rpmhpd.c +++ b/drivers/soc/qcom/rpmhpd.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -48,6 +49,7 @@ struct rpmhpd { bool enabled; const char *res_name; u32 addr; + bool is_warming_dev; }; struct rpmhpd_desc { @@ -55,6 +57,8 @@ struct rpmhpd_desc { size_t num_pds; }; +const struct rpmhpd_desc *global_desc; + static DEFINE_MUTEX(rpmhpd_lock); /* SDM845 RPMH powerdomains */ @@ -89,6 +93,7 @@ static struct rpmhpd sdm845_mx = { .pd = { .name = "mx", }, .peer = &sdm845_mx_ao, .res_name = "mx.lvl", + .is_warming_dev = true, }; static struct rpmhpd sdm845_mx_ao = { @@ -396,7 +401,14 @@ static int rpmhpd_probe(struct platform_device *pdev) &rpmhpds[i]->pd); } - return of_genpd_add_provider_onecell(pdev->dev.of_node, data); + ret = of_genpd_add_provider_onecell(pdev->dev.of_node, data); + + if (ret) + return ret; + + global_desc = desc; + + return 0; } static struct platform_driver rpmhpd_driver = { @@ -413,3 +425,27 @@ static int __init rpmhpd_init(void) return platform_driver_register(&rpmhpd_driver); } core_initcall(rpmhpd_init); + +static int __init rpmhpd_init_warming_device(void) +{ + size_t num_pds; + struct rpmhpd **rpmhpds; + int i; + + if (!global_desc) + return -EINVAL; + + rpmhpds = global_desc->rpmhpds; + num_pds = global_desc->num_pds; + + if (!of_find_property(rpmhpds[0]->dev->of_node, "#cooling-cells", NULL)) + return 0; + + for (i = 0; i < num_pds; i++) + if (rpmhpds[i]->is_warming_dev) + pwr_domain_warming_register(rpmhpds[i]->dev, + rpmhpds[i]->res_name, i); + + return 0; +} +late_initcall(rpmhpd_init_warming_device);