From patchwork Tue Aug 14 12:12:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sricharan Ramabadhran X-Patchwork-Id: 10565485 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 086C81815 for ; Tue, 14 Aug 2018 12:15:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ED01A2934E for ; Tue, 14 Aug 2018 12:15:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E10FD299F4; Tue, 14 Aug 2018 12:15:26 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,T_DKIM_INVALID 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 4022A2934E for ; Tue, 14 Aug 2018 12:15:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732424AbeHNPCM (ORCPT ); Tue, 14 Aug 2018 11:02:12 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:46266 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729472AbeHNPCM (ORCPT ); Tue, 14 Aug 2018 11:02:12 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 9890F60C4F; Tue, 14 Aug 2018 12:14:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1534248917; bh=f9MtOo7C8IOljmQF7Ub2Yw/yO9bfpRQZDJ0J7dQF1jo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=airiTDvV0+/8QZ2+AYqzk92eHauqVg7nh42FjOcOGw6dREw1zklmSDVusJtbAE6YV CNBpSLmMwlApApraaa9BKiqpUTOw4L1NSu6I0asYqIUZKQzg0l0av0/7WjCKNQxR4a zbjAZoIAO2gZrzKOvJfAdZrhhR/yGWBwSZ5HG9Pg= Received: from srichara-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sricharan@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id A943460D3D; Tue, 14 Aug 2018 12:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1534248863; bh=f9MtOo7C8IOljmQF7Ub2Yw/yO9bfpRQZDJ0J7dQF1jo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MJNhc+aY9lAdKR9rn2uBQy7af0Yp/SJIciZZ4jh4Jp8ChRzmTSwQIOuZB8mCbZQn6 re6vJQOoDJd57S6+RvATzH53xt1/dY+34DJBbmP5rNfyAAFtkjo+IOfdGvCtucB4NJ GlLEQS0dP4mck1eeD5WPDpyP0clNm4SQfcZxw/Qo= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org A943460D3D Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=sricharan@codeaurora.org From: Sricharan R To: mark.rutland@arm.com, robh@kernel.org, sudeep.holla@arm.com, linux@arm.linux.org.uk, ctatlor97@gmail.com, rjw@rjwysocki.net, viresh.kumar@linaro.org, mturquette@baylibre.com, linux-pm@vger.kernel.org, sboyd@codeaurora.org, linux@armlinux.org.uk, thierry.escande@linaro.org, linux-kernel@vger.kernel.org, david.brown@linaro.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, andy.gross@linaro.org, linux-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, niklas.cassel@linaro.org Cc: sricharan@codeaurora.org Subject: [PATCH v12 13/14] cpufreq: qcom: Re-organise kryo cpufreq to use it for other nvmem based qcom socs Date: Tue, 14 Aug 2018 17:42:32 +0530 Message-Id: <1534248753-2440-14-git-send-email-sricharan@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1534248753-2440-1-git-send-email-sricharan@codeaurora.org> References: <1534248753-2440-1-git-send-email-sricharan@codeaurora.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The kryo cpufreq driver reads the nvmem cell and uses that data to populate the opps. There are other qcom cpufreq socs like krait which does similar thing. Except for the interpretation of the read data, rest of the driver is same for both the cases. So pull the common things out for reuse. Signed-off-by: Sricharan R --- .../{kryo-cpufreq.txt => qcom-nvmem-cpufreq.txt} | 6 +- drivers/cpufreq/Kconfig.arm | 4 +- drivers/cpufreq/Makefile | 2 +- .../{qcom-cpufreq-kryo.c => qcom-cpufreq-nvmem.c} | 124 ++++++++++++--------- 4 files changed, 80 insertions(+), 56 deletions(-) rename Documentation/devicetree/bindings/opp/{kryo-cpufreq.txt => qcom-nvmem-cpufreq.txt} (99%) rename drivers/cpufreq/{qcom-cpufreq-kryo.c => qcom-cpufreq-nvmem.c} (65%) diff --git a/Documentation/devicetree/bindings/opp/kryo-cpufreq.txt b/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt similarity index 99% rename from Documentation/devicetree/bindings/opp/kryo-cpufreq.txt rename to Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt index c2127b9..6dcdfcd 100644 --- a/Documentation/devicetree/bindings/opp/kryo-cpufreq.txt +++ b/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt @@ -19,7 +19,7 @@ In 'cpus' nodes: In 'operating-points-v2' table: - compatible: Should be - - 'operating-points-v2-kryo-cpu' for apq8096 and msm8996. + - 'operating-points-v2-qcom-cpu' for apq8096 and msm8996. - nvmem-cells: A phandle pointing to a nvmem-cells node representing the efuse registers that has information about the speedbin that is used to select the right frequency/voltage @@ -127,7 +127,7 @@ Example 1: }; cluster0_opp: opp_table0 { - compatible = "operating-points-v2-kryo-cpu"; + compatible = "operating-points-v2-qcom-cpu"; nvmem-cells = <&speedbin_efuse>; opp-shared; @@ -338,7 +338,7 @@ Example 1: }; cluster1_opp: opp_table1 { - compatible = "operating-points-v2-kryo-cpu"; + compatible = "operating-points-v2-qcom-cpu"; nvmem-cells = <&speedbin_efuse>; opp-shared; diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 52f5f1a..13fbd97 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -124,8 +124,8 @@ config ARM_OMAP2PLUS_CPUFREQ depends on ARCH_OMAP2PLUS default ARCH_OMAP2PLUS -config ARM_QCOM_CPUFREQ_KRYO - tristate "Qualcomm Kryo based CPUFreq" +config ARM_QCOM_CPUFREQ_NVMEM + tristate "Qualcomm nvmem based CPUFreq" depends on ARM64 depends on QCOM_QFPROM depends on QCOM_SMEM diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index fb4a2ec..5544441 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -65,7 +65,7 @@ obj-$(CONFIG_MACH_MVEBU_V7) += mvebu-cpufreq.o obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += omap-cpufreq.o obj-$(CONFIG_ARM_PXA2xx_CPUFREQ) += pxa2xx-cpufreq.o obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o -obj-$(CONFIG_ARM_QCOM_CPUFREQ_KRYO) += qcom-cpufreq-kryo.o +obj-$(CONFIG_ARM_QCOM_CPUFREQ_NVMEM) += qcom-cpufreq-nvmem.o obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o obj-$(CONFIG_ARM_S3C2412_CPUFREQ) += s3c2412-cpufreq.o obj-$(CONFIG_ARM_S3C2416_CPUFREQ) += s3c2416-cpufreq.o diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c similarity index 65% rename from drivers/cpufreq/qcom-cpufreq-kryo.c rename to drivers/cpufreq/qcom-cpufreq-nvmem.c index efc9a7a..0ad8e5b 100644 --- a/drivers/cpufreq/qcom-cpufreq-kryo.c +++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c @@ -9,7 +9,7 @@ * based on the silicon variant in use. Qualcomm Process Voltage Scaling Tables * defines the voltage and frequency value based on the msm-id in SMEM * and speedbin blown in the efuse combination. - * The qcom-cpufreq-kryo driver reads the msm-id and efuse value from the SoC + * The qcom-cpufreq driver reads the msm-id and efuse value from the SoC * to provide the OPP framework with required information. * This is used to determine the voltage and frequency value for each OPP of * operating-points-v2 table when it is parsed by the OPP framework. @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -42,9 +43,9 @@ enum _msm8996_version { NUM_OF_MSM8996_VERSIONS, }; -struct platform_device *cpufreq_dt_pdev, *kryo_cpufreq_pdev; +static struct platform_device *cpufreq_dt_pdev, *cpufreq_pdev; -static enum _msm8996_version __init qcom_cpufreq_kryo_get_msm_id(void) +static enum _msm8996_version __init qcom_cpufreq_get_msm_id(void) { size_t len; u32 *msm_id; @@ -73,34 +74,70 @@ static enum _msm8996_version __init qcom_cpufreq_kryo_get_msm_id(void) return version; } -static int qcom_cpufreq_kryo_probe(struct platform_device *pdev) +static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev, + struct nvmem_cell *speedbin_nvmem, + char **pvs_name, + u32 *versions) { - struct opp_table *opp_tables[NR_CPUS] = {0}; + size_t len; + u8 *speedbin; enum _msm8996_version msm8996_version; + + msm8996_version = qcom_cpufreq_get_msm_id(); + if (NUM_OF_MSM8996_VERSIONS == msm8996_version) { + dev_err(cpu_dev, "Not Snapdragon 820/821!"); + return -ENODEV; + } + + speedbin = nvmem_cell_read(speedbin_nvmem, &len); + if (IS_ERR(speedbin)) + return PTR_ERR(speedbin); + + switch (msm8996_version) { + case MSM8996_V3: + *versions = 1 << (unsigned int)(*speedbin); + break; + case MSM8996_SG: + *versions = 1 << ((unsigned int)(*speedbin) + 4); + break; + default: + BUG(); + break; + } + + kfree(speedbin); + return 0; +} + +static int qcom_cpufreq_probe(struct platform_device *pdev) +{ + struct opp_table *opp_tables[NR_CPUS] = { NULL }; + int (*get_version)(struct device *cpu_dev, + struct nvmem_cell *speedbin_nvmem, + char **name, int *versions); struct nvmem_cell *speedbin_nvmem; struct device_node *np; struct device *cpu_dev; unsigned cpu; - u8 *speedbin; u32 versions; - size_t len; + char *pvs_name = NULL; + const struct of_device_id *match; int ret; cpu_dev = get_cpu_device(0); if (!cpu_dev) return -ENODEV; - msm8996_version = qcom_cpufreq_kryo_get_msm_id(); - if (NUM_OF_MSM8996_VERSIONS == msm8996_version) { - dev_err(cpu_dev, "Not Snapdragon 820/821!"); + match = pdev->dev.platform_data; + get_version = match->data; + if (!get_version) return -ENODEV; - } np = dev_pm_opp_of_get_opp_desc_node(cpu_dev); if (!np) return -ENOENT; - ret = of_device_is_compatible(np, "operating-points-v2-kryo-cpu"); + ret = of_device_is_compatible(np, "operating-points-v2-qcom-cpu"); if (!ret) { of_node_put(np); return -ENOENT; @@ -114,23 +151,10 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev) return PTR_ERR(speedbin_nvmem); } - speedbin = nvmem_cell_read(speedbin_nvmem, &len); + ret = get_version(cpu_dev, speedbin_nvmem, &pvs_name, &versions); nvmem_cell_put(speedbin_nvmem); - if (IS_ERR(speedbin)) - return PTR_ERR(speedbin); - - switch (msm8996_version) { - case MSM8996_V3: - versions = 1 << (unsigned int)(*speedbin); - break; - case MSM8996_SG: - versions = 1 << ((unsigned int)(*speedbin) + 4); - break; - default: - BUG(); - break; - } - kfree(speedbin); + if (ret) + return ret; for_each_possible_cpu(cpu) { cpu_dev = get_cpu_device(cpu); @@ -166,24 +190,24 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev) return ret; } -static int qcom_cpufreq_kryo_remove(struct platform_device *pdev) +static int qcom_cpufreq_remove(struct platform_device *pdev) { platform_device_unregister(cpufreq_dt_pdev); return 0; } -static struct platform_driver qcom_cpufreq_kryo_driver = { - .probe = qcom_cpufreq_kryo_probe, - .remove = qcom_cpufreq_kryo_remove, +static struct platform_driver qcom_cpufreq_driver = { + .probe = qcom_cpufreq_probe, + .remove = qcom_cpufreq_remove, .driver = { - .name = "qcom-cpufreq-kryo", + .name = "qcom-cpufreq", }, }; -static const struct of_device_id qcom_cpufreq_kryo_match_list[] __initconst = { - { .compatible = "qcom,apq8096", }, - { .compatible = "qcom,msm8996", }, - {} +static const struct of_device_id qcom_cpufreq_match_list[] __initconst = { + { .compatible = "qcom,apq8096", .data = qcom_cpufreq_kryo_name_version}, + { .compatible = "qcom,msm8996", .data = qcom_cpufreq_kryo_name_version}, + {}, }; /* @@ -192,7 +216,7 @@ static int qcom_cpufreq_kryo_remove(struct platform_device *pdev) * which may be defered as well. The init here is only registering * the driver and the platform device. */ -static int __init qcom_cpufreq_kryo_init(void) +static int __init qcom_cpufreq_init(void) { struct device_node *np = of_find_node_by_path("/"); const struct of_device_id *match; @@ -201,32 +225,32 @@ static int __init qcom_cpufreq_kryo_init(void) if (!np) return -ENODEV; - match = of_match_node(qcom_cpufreq_kryo_match_list, np); + match = of_match_node(qcom_cpufreq_match_list, np); of_node_put(np); if (!match) return -ENODEV; - ret = platform_driver_register(&qcom_cpufreq_kryo_driver); + ret = platform_driver_register(&qcom_cpufreq_driver); if (unlikely(ret < 0)) return ret; - kryo_cpufreq_pdev = platform_device_register_simple( - "qcom-cpufreq-kryo", -1, NULL, 0); - ret = PTR_ERR_OR_ZERO(kryo_cpufreq_pdev); + cpufreq_pdev = platform_device_register_data(NULL, "qcom-cpufreq", + -1, match, sizeof(*match)); + ret = PTR_ERR_OR_ZERO(cpufreq_pdev); if (0 == ret) return 0; - platform_driver_unregister(&qcom_cpufreq_kryo_driver); + platform_driver_unregister(&qcom_cpufreq_driver); return ret; } -module_init(qcom_cpufreq_kryo_init); +module_init(qcom_cpufreq_init); -static void __init qcom_cpufreq_kryo_exit(void) +static void __init qcom_cpufreq_exit(void) { - platform_device_unregister(kryo_cpufreq_pdev); - platform_driver_unregister(&qcom_cpufreq_kryo_driver); + platform_device_unregister(cpufreq_pdev); + platform_driver_unregister(&qcom_cpufreq_driver); } -module_exit(qcom_cpufreq_kryo_exit); +module_exit(qcom_cpufreq_exit); -MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Kryo CPUfreq driver"); +MODULE_DESCRIPTION("Qualcomm Technologies, Inc. CPUfreq driver"); MODULE_LICENSE("GPL v2");