From patchwork Thu Jan 31 00:39:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 10789469 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 31954922 for ; Thu, 31 Jan 2019 00:40:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4337C305DE for ; Thu, 31 Jan 2019 00:40:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 367943062E; Thu, 31 Jan 2019 00:40:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A1EBC305DA for ; Thu, 31 Jan 2019 00:40:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729530AbfAaAkA (ORCPT ); Wed, 30 Jan 2019 19:40:00 -0500 Received: from mail-pf1-f196.google.com ([209.85.210.196]:46402 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729446AbfAaAkA (ORCPT ); Wed, 30 Jan 2019 19:40:00 -0500 Received: by mail-pf1-f196.google.com with SMTP id c73so613467pfe.13 for ; Wed, 30 Jan 2019 16:39:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=inUJcDmLJEIhpghXAnayf+quiU2aPZto5SpfxGijJ28=; b=BuZhgRDRGl5ItmiuO0N27bfNGkhoyMnX12fdFlDAoWHlMfSnfl7dlIeRkqgeatpcrV ujmLuje7rbm1DEYKf8W624dgOUM3FSJ93APiD1U2WR6afHpHwIFz2HZZ9XhURXJPPnJf XY2wlV09ZqtnZvca/RPBVNe0sNMUzwLTRT/PQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=inUJcDmLJEIhpghXAnayf+quiU2aPZto5SpfxGijJ28=; b=cECbtvAYfLWW2GOXA+NculmuoE06kZsAKDGB7/Z7V1AWmjVlHKco15b9HYQk1bUZuq hIuMcbRtPZnFOWgT/eQUKuzjzjE2J9jxBUduvVneDaQos3ZhJJz34XO5GtVrCxOneOnV 96M4MCmDeogo1CGDcUZNZCV//5RtTtXcIo09IEI8c619ZecvAighgOhbJNFYbOERaSSD 6pzND16SXjJe7uEa2kwSZAmY1hb93chmbb9fDQvwlIFoEVfzfaDzAyZ98NvIrSniLH2A cXFbkt93OPYC6TT4mZVIC+ZE/10bT88cOH1bmkTHAYz+q+Njrf7NddgkK6beb8dbfvpM /Kgw== X-Gm-Message-State: AJcUukev5ADrJktxQw+V64R0w7ldxxowX2xdUPJsfLFuWDmwe5jWpw2t THn0i8qYeE7811TKx4U1uoujFIVCG90= X-Google-Smtp-Source: ALg8bN7ItTlT4l5lB5EYY+qsjsrprgLOwFOmnzwr+iqCm2iwAsiUPzgpUBpPwvn5urfK3MDhKMW+vw== X-Received: by 2002:a63:3e05:: with SMTP id l5mr21531006pga.96.1548895198998; Wed, 30 Jan 2019 16:39:58 -0800 (PST) Received: from localhost.localdomain (104-188-17-28.lightspeed.sndgca.sbcglobal.net. [104.188.17.28]) by smtp.gmail.com with ESMTPSA id k15sm4357928pfb.147.2019.01.30.16.39.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 30 Jan 2019 16:39:58 -0800 (PST) From: Bjorn Andersson To: Andy Gross , David Brown Cc: Rob Herring , Mark Rutland , Ohad Ben-Cohen , Arun Kumar Neelakantam , Sibi Sankar , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org Subject: [PATCH v5 06/10] soc: qcom: Add AOSS QMP genpd provider Date: Wed, 30 Jan 2019 16:39:29 -0800 Message-Id: <20190131003933.11436-7-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190131003933.11436-1-bjorn.andersson@linaro.org> References: <20190131003933.11436-1-bjorn.andersson@linaro.org> Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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. Tested-by: Sai Prakash Ranjan Signed-off-by: Bjorn Andersson Tested-by: Sibi Sankar Reviewed-by: Sibi Sankar --- Changes since v4: - None Changes since v3: - None drivers/soc/qcom/Kconfig | 9 +++ drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/aoss-qmp-pd.c | 138 +++++++++++++++++++++++++++++++++ 3 files changed, 148 insertions(+) create mode 100644 drivers/soc/qcom/aoss-qmp-pd.c diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index 28ab19bf8c98..893b56b70957 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 AOSS's 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 2c04d27fbf9e..16913e73fddf 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..82dd569a2bc9 --- /dev/null +++ b/drivers/soc/qcom/aoss-qmp-pd.c @@ -0,0 +1,138 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, Linaro Ltd + */ +#include +#include +#include +#include +#include + +/* Requests are expected to be 96 bytes long */ +#define AOSS_QMP_PD_MSG_LEN 96 + +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[AOSS_QMP_PD_MSG_LEN]; + + 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[AOSS_QMP_PD_MSG_LEN]; + + 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");