From patchwork Tue Jun 11 16:41:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 166468 Delivered-To: patch@linaro.org Received: by 2002:a92:4782:0:0:0:0:0 with SMTP id e2csp2585714ilk; Tue, 11 Jun 2019 09:42:13 -0700 (PDT) X-Google-Smtp-Source: APXvYqwSgWGE4J8KjisgGfITiFSElbPwU8Nh3FXdBbkvSc1dWthP/KIjqIUBCNKt9XpHA0eZ4Rk7 X-Received: by 2002:a62:62c1:: with SMTP id w184mr80233521pfb.95.1560271333148; Tue, 11 Jun 2019 09:42:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1560271333; cv=none; d=google.com; s=arc-20160816; b=HnCY6Q4TNSLRrXheZqzwZb0I1JGfgY7GTcRnVnDKIm8Gt6ph3AXucXPvuT9wQZ885H LibdIVtY0/y4DpC2H0LT5KXi8RlXUZJIQWDnCY5zcf5Qc9URfbNbH1SYGauGUHIUX3JF fp4I2VF/4n0Wi6kmX1NmlIR3xykc3KBUSdCCNFE14p/CUGpc/Bxu1FkoGBgbXx//rftH Sd3agcKZKl70Oq8XvD7DMeqlnv46AoZvju5TOzxyQWo4P3CT8NR79Klsx6w1biu6moOT rfayJd0L/c6Gs5uxptYvuOuDRvwluWQ7bRdV0AY99E+erOKKCYsBoUKoHWjBzDZvT1eT Z9sg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=lo0w8ORpojy0mdsY2IhEVYR4gGoYMJicUiUW6QNhLjU=; b=KlA4zgThYknCsy8lpjDFN5aG1uj/orsOTKhrTTz+sAsYakXTN9IxYYzyfBBtJEdSe2 uEu6mXgqwtMUF14EUs1E+LzRqwau5MtZfLL98XSxwlU+meahxc/V97AauOKo2FsXA0+K SqGj479r3FjpN0HzGr96s+N8EYfF9qRU2pMGE2NqUQfpC9BNaComvn2p14T/WYwPlNcx zCPnAfjB8lbQ8Jib+sc3G7Kg9bg2Xq9QZ+3xSGXXPZvdnkJnDdlFcApqiUwVlK3l6KtM yuFUNeVAnmu88oKDjfqhdXdW1ywjID6VeHHBNB7UofUycri7dfgRdUSH5x8LqGQcB3OW OIJQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=z8VprxYW; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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Signed-off-by: Georgi Djakov --- v3: - Add a reg property and move the interconnect nodes under the "soc" node. v2: - No changes. .../bindings/interconnect/qcom,qcs404.txt | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,qcs404.txt diff --git a/Documentation/devicetree/bindings/interconnect/qcom,qcs404.txt b/Documentation/devicetree/bindings/interconnect/qcom,qcs404.txt new file mode 100644 index 000000000000..14a827268dda --- /dev/null +++ b/Documentation/devicetree/bindings/interconnect/qcom,qcs404.txt @@ -0,0 +1,46 @@ +Qualcomm QCS404 Network-On-Chip interconnect driver binding +----------------------------------------------------------- + +Required properties : +- compatible : shall contain only one of the following: + "qcom,qcs404-bimc" + "qcom,qcs404-pcnoc" + "qcom,qcs404-snoc" +- #interconnect-cells : should contain 1 + +Optional properties : +reg : specifies the physical base address and size of registers +clocks : list of phandles and specifiers to all interconnect bus clocks +clock-names : clock names should include both "bus_clk" and "bus_a_clk" + +Example: + +soc { + ... + bimc: interconnect@400000 { + reg = <0x00400000 0x80000>; + compatible = "qcom,qcs404-bimc"; + #interconnect-cells = <1>; + clock-names = "bus_clk", "bus_a_clk"; + clocks = <&rpmcc RPM_SMD_BIMC_CLK>, + <&rpmcc RPM_SMD_BIMC_A_CLK>; + }; + + pnoc: interconnect@500000 { + reg = <0x00500000 0x15080>; + compatible = "qcom,qcs404-pcnoc"; + #interconnect-cells = <1>; + clock-names = "bus_clk", "bus_a_clk"; + clocks = <&rpmcc RPM_SMD_PNOC_CLK>, + <&rpmcc RPM_SMD_PNOC_A_CLK>; + }; + + snoc: interconnect@580000 { + reg = <0x00580000 0x23080>; + compatible = "qcom,qcs404-snoc"; + #interconnect-cells = <1>; + clock-names = "bus_clk", "bus_a_clk"; + clocks = <&rpmcc RPM_SMD_SNOC_CLK>, + <&rpmcc RPM_SMD_SNOC_A_CLK>; + }; +}; From patchwork Tue Jun 11 16:41:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 166469 Delivered-To: patch@linaro.org Received: by 2002:a92:4782:0:0:0:0:0 with SMTP id e2csp2585843ilk; Tue, 11 Jun 2019 09:42:20 -0700 (PDT) X-Google-Smtp-Source: APXvYqyso30tiKH//cZ7e5JOKF6o9X5kcydkfUOVN5Smyw0r41Y+TfV2vj5MS1Ya6EirHNXAugpd X-Received: by 2002:a63:8042:: with SMTP id j63mr4798510pgd.239.1560271340575; Tue, 11 Jun 2019 09:42:20 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1560271340; cv=none; d=google.com; s=arc-20160816; b=U05NJGoLcsqiLyORGn79xxI6lD128iD7jNLnzmYvFbeRLXtWeCsouWdXxRZPnWAy8V AAVpSCZsAl/uGFil/z6CkO0psPxFnKaJVMZEh7vIhjmGrk+mhtTDRrcK3FMBw6V0hGoO WSpZCSzP3WXvSgOTxsbJpEt5boF28QHF7PoaTMRC/eSg3aKzS0zQfHpdcxGvLihobKZR 7MIRI93KPGHvh2RRHTmEsHx45zRfI0ItEVTDfkYodDazx6dfBwpRUdP8RQpfksc12n3y tCumJRfV0lE13TSqL2ke9fVf5g2rcdyJRSfU2jdSJoRDxa7zUDEmBJkTbj/21gIMfZXX IC+A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=yqRvC4t/KJZ7EpjmV+PMrX0EoO+pq9e/AYZP8BykWf4=; b=T52JZnw7Q+1I8jQJZl1lxNimqrkE2hUOGr1iUtZdveWQ5g6mlEz4GbiY6y5olAPqCI 9ZU4JnFST0AQ46SA3TuO5uQTSCgoZsF6LvtzszPhvnuGydWSL5mU4+xsStzPI9zY0WMn VcnoRlid+BLm7Pkc9yqbNCyP8KdY9v1YZAFCj/wucNw0crxtm3bY+RbXJz10tpha4Wpj WlryKwXPk+kapMY+rfS/dhstrsfygvedZH5MilfSIFjkRIdAcMr3z3AAMTN4hmIuZjdI BRJYanSYDX22YHI/eRIJs2ZFIHlL0cdPTT+nQC0WIb5ii33Y8uxeRWSXos4e7RywsKLb EnYw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=q9ISHTff; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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Other CPUs express their needs by communicating with this processor. Add a driver to handle communication with this remote processor. Signed-off-by: Georgi Djakov --- v3: - New patch. drivers/interconnect/qcom/Kconfig | 9 ++++ drivers/interconnect/qcom/Makefile | 2 + drivers/interconnect/qcom/smd-rpm.c | 72 +++++++++++++++++++++++++++++ drivers/interconnect/qcom/smd-rpm.h | 15 ++++++ 4 files changed, 98 insertions(+) create mode 100644 drivers/interconnect/qcom/smd-rpm.c create mode 100644 drivers/interconnect/qcom/smd-rpm.h diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig index e76e3e248c41..b0eade1da5d5 100644 --- a/drivers/interconnect/qcom/Kconfig +++ b/drivers/interconnect/qcom/Kconfig @@ -9,6 +9,7 @@ config INTERCONNECT_QCOM_QCS404 tristate "Qualcomm QCS404 interconnect driver" depends on INTERCONNECT_QCOM depends on QCOM_SMD_RPM || COMPILE_TEST + select INTERCONNECT_QCOM_SMD_RPM help This is a driver for the Qualcomm Network-on-Chip on qcs404-based platforms. @@ -20,3 +21,11 @@ config INTERCONNECT_QCOM_SDM845 help This is a driver for the Qualcomm Network-on-Chip on sdm845-based platforms. + +config INTERCONNECT_QCOM_SMD_RPM + tristate "Qualcomm SMD RPM interconnect driver" + depends on INTERCONNECT_QCOM + depends on QCOM_SMD_RPM || COMPILE_TEST + help + This is a driver for communicating interconnect related configuration + details with a remote processor (RPM) on Qualcomm platforms. diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile index 059ff325ee6c..67dafb783dec 100644 --- a/drivers/interconnect/qcom/Makefile +++ b/drivers/interconnect/qcom/Makefile @@ -2,6 +2,8 @@ qnoc-qcs404-objs := qcs404.o qnoc-sdm845-objs := sdm845.o +icc-smd-rpm-objs := smd-rpm.o obj-$(CONFIG_INTERCONNECT_QCOM_QCS404) += qnoc-qcs404.o obj-$(CONFIG_INTERCONNECT_QCOM_SDM845) += qnoc-sdm845.o +obj-$(CONFIG_INTERCONNECT_QCOM_SMD_RPM) += icc-smd-rpm.o diff --git a/drivers/interconnect/qcom/smd-rpm.c b/drivers/interconnect/qcom/smd-rpm.c new file mode 100644 index 000000000000..af22c0a293e6 --- /dev/null +++ b/drivers/interconnect/qcom/smd-rpm.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * RPM over SMD communication wrapper for interconnects + * + * Copyright (C) 2019 Linaro Ltd + * Author: Georgi Djakov + */ + +#include +#include +#include +#include +#include +#include + +#include "smd-rpm.h" + +#define RPM_KEY_BW 0x00007762 + +static struct qcom_smd_rpm *icc_smd_rpm; + +struct icc_rpm_smd_req { + __le32 key; + __le32 nbytes; + __le32 value; +}; + +bool qcom_icc_rpm_smd_available(void) +{ + if (!icc_smd_rpm) + return false; + + return true; +} +EXPORT_SYMBOL_GPL(qcom_icc_rpm_smd_available); + +int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val) +{ + struct icc_rpm_smd_req req = { + .key = cpu_to_le32(RPM_KEY_BW), + .nbytes = cpu_to_le32(sizeof(u32)), + .value = cpu_to_le32(val), + }; + + return qcom_rpm_smd_write(icc_smd_rpm, ctx, rsc_type, id, &req, + sizeof(req)); +} +EXPORT_SYMBOL_GPL(qcom_icc_rpm_smd_send); + +static int qcom_icc_rpm_smd_probe(struct platform_device *pdev) +{ + icc_smd_rpm = dev_get_drvdata(pdev->dev.parent); + + if (!icc_smd_rpm) { + dev_err(&pdev->dev, "unable to retrieve handle to RPM\n"); + return -ENODEV; + } + + return 0; +} + +static struct platform_driver qcom_interconnect_rpm_smd_driver = { + .driver = { + .name = "icc_smd_rpm", + }, + .probe = qcom_icc_rpm_smd_probe, +}; +module_platform_driver(qcom_interconnect_rpm_smd_driver); +MODULE_AUTHOR("Georgi Djakov "); +MODULE_DESCRIPTION("Qualcomm SMD RPM interconnect proxy driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:icc_smd_rpm"); diff --git a/drivers/interconnect/qcom/smd-rpm.h b/drivers/interconnect/qcom/smd-rpm.h new file mode 100644 index 000000000000..ca9d0327b8ac --- /dev/null +++ b/drivers/interconnect/qcom/smd-rpm.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2019, Linaro Ltd. + * Author: Georgi Djakov + */ + +#ifndef __DRIVERS_INTERCONNECT_QCOM_SMD_RPM_H +#define __DRIVERS_INTERCONNECT_QCOM_SMD_RPM_H + +#include + +bool qcom_icc_rpm_smd_available(void); +int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val); + +#endif