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[104.188.17.28]) by smtp.gmail.com with ESMTPSA id v190sm90763364pfv.26.2019.01.06.00.10.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 06 Jan 2019 00:10:19 -0800 (PST) From: Bjorn Andersson To: Andy Gross , David Brown , Rob Herring , Mark Rutland Cc: Russell King , Ulf Hansson , Arun Kumar Neelakantam , linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/7] soc: qcom: Add AOSS QMP genpd provider Date: Sun, 6 Jan 2019 00:09:11 -0800 Message-Id: <20190106080915.4493-4-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190106080915.4493-1-bjorn.andersson@linaro.org> References: <20190106080915.4493-1-bjorn.andersson@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The AOSS QMP genpd provider implements control over power-related resources related to low-power state associated with the remoteprocs in the system as well as control over a set of clocks related to debug hardware in the SoC. Signed-off-by: Bjorn Andersson --- Changes since v1: - Drop compatible, as the QMP DT node is flattened - Correct size of send drivers/soc/qcom/Kconfig | 9 +++ drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/aoss-qmp-pd.c | 135 +++++++++++++++++++++++++++++++++ 3 files changed, 145 insertions(+) create mode 100644 drivers/soc/qcom/aoss-qmp-pd.c -- 2.18.0 diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index dda19471057f..d81256ef5055 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -12,6 +12,15 @@ config QCOM_AOSS_QMP micro-controller in the AOSS, using QMP, to control certain resource that are not exposed through RPMh. +config QCOM_AOSS_QMP_PD + tristate "Qualcomm AOSS Messaging Power Domain driver" + depends on QCOM_AOSS_QMP + select PM_GENERIC_DOMAINS + help + This driver provides the means of controlling the AOSSs handling of + low-power state for resources related to the remoteproc subsystems as + well as controlling the debug clocks. + config QCOM_COMMAND_DB bool "Qualcomm Command DB" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index d0d7fdc94d9a..ebfa414a5b77 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS_rpmh-rsc.o := -I$(src) obj-$(CONFIG_QCOM_AOSS_QMP) += aoss-qmp.o +obj-$(CONFIG_QCOM_AOSS_QMP_PD) += aoss-qmp-pd.o obj-$(CONFIG_QCOM_GENI_SE) += qcom-geni-se.o obj-$(CONFIG_QCOM_COMMAND_DB) += cmd-db.o obj-$(CONFIG_QCOM_GLINK_SSR) += glink_ssr.o diff --git a/drivers/soc/qcom/aoss-qmp-pd.c b/drivers/soc/qcom/aoss-qmp-pd.c new file mode 100644 index 000000000000..62b8fcb9d09e --- /dev/null +++ b/drivers/soc/qcom/aoss-qmp-pd.c @@ -0,0 +1,135 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, Linaro Ltd + */ +#include +#include +#include +#include +#include + +struct qmp_pd { + struct qmp *qmp; + + struct generic_pm_domain pd; + + const char *name; +}; + +#define to_qmp_pd_resource(res) container_of(res, struct qmp_pd, pd) + +struct qmp_pd_resource { + const char *name; + int (*on)(struct generic_pm_domain *domain); + int (*off)(struct generic_pm_domain *domain); +}; + +static int qmp_pd_clock_toggle(struct qmp_pd *res, bool enable) +{ + char buf[96]; + + snprintf(buf, sizeof(buf), "{class: clock, res: %s, val: %d}", + res->name, !!enable); + return qmp_send(res->qmp, buf, sizeof(buf)); +} + +static int qmp_pd_clock_on(struct generic_pm_domain *domain) +{ + return qmp_pd_clock_toggle(to_qmp_pd_resource(domain), true); +} + +static int qmp_pd_clock_off(struct generic_pm_domain *domain) +{ + return qmp_pd_clock_toggle(to_qmp_pd_resource(domain), false); +} + +static int qmp_pd_image_toggle(struct qmp_pd *res, bool enable) +{ + char buf[96]; + + snprintf(buf, sizeof(buf), + "{class: image, res: load_state, name: %s, val: %s}", + res->name, enable ? "on" : "off"); + return qmp_send(res->qmp, buf, sizeof(buf)); +} + +static int qmp_pd_image_on(struct generic_pm_domain *domain) +{ + return qmp_pd_image_toggle(to_qmp_pd_resource(domain), true); +} + +static int qmp_pd_image_off(struct generic_pm_domain *domain) +{ + return qmp_pd_image_toggle(to_qmp_pd_resource(domain), false); +} + +static const struct qmp_pd_resource sdm845_resources[] = { + [AOSS_QMP_QDSS_CLK] = { "qdss", qmp_pd_clock_on, qmp_pd_clock_off }, + [AOSS_QMP_LS_CDSP] = { "cdsp", qmp_pd_image_on, qmp_pd_image_off }, + [AOSS_QMP_LS_LPASS] = { "adsp", qmp_pd_image_on, qmp_pd_image_off }, + [AOSS_QMP_LS_MODEM] = { "modem", qmp_pd_image_on, qmp_pd_image_off }, + [AOSS_QMP_LS_SLPI] = { "slpi", qmp_pd_image_on, qmp_pd_image_off }, + [AOSS_QMP_LS_SPSS] = { "spss", qmp_pd_image_on, qmp_pd_image_off }, + [AOSS_QMP_LS_VENUS] = { "venus", qmp_pd_image_on, qmp_pd_image_off }, +}; + +static int qmp_pd_probe(struct platform_device *pdev) +{ + struct genpd_onecell_data *data; + struct device *parent = pdev->dev.parent; + struct qmp_pd *res; + struct qmp *qmp; + size_t num = ARRAY_SIZE(sdm845_resources); + int i; + + qmp = dev_get_drvdata(pdev->dev.parent); + if (!qmp) + return -EINVAL; + + res = devm_kcalloc(&pdev->dev, num, sizeof(*res), GFP_KERNEL); + if (!res) + return -ENOMEM; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->domains = devm_kcalloc(&pdev->dev, num, sizeof(*data->domains), + GFP_KERNEL); + + for (i = 0; i < num; i++) { + pm_genpd_init(&res[i].pd, NULL, true); + res[i].qmp = qmp; + res[i].name = sdm845_resources[i].name; + + res[i].pd.name = sdm845_resources[i].name; + res[i].pd.power_on = sdm845_resources[i].on; + res[i].pd.power_off = sdm845_resources[i].off; + + data->domains[data->num_domains++] = &res[i].pd; + } + + return of_genpd_add_provider_onecell(parent->of_node, data); +} + +static int qmp_pd_remove(struct platform_device *pdev) +{ + struct device *parent = pdev->dev.parent; + + of_genpd_del_provider(parent->of_node); + + return 0; +} + +static struct platform_driver qmp_pd_driver = { + .driver = { + .name = "aoss_qmp_pd", + }, + .probe = qmp_pd_probe, + .remove = qmp_pd_remove, +}; +module_platform_driver(qmp_pd_driver); + +MODULE_ALIAS("platform:aoss_qmp_pd"); +MODULE_DESCRIPTION("Qualcomm AOSS QMP load-state driver"); +MODULE_LICENSE("GPL v2");