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[209.132.180.67]) by mx.google.com with ESMTP id r72si4024208pfb.235.2016.03.28.23.40.23; Mon, 28 Mar 2016 23:40:23 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752010AbcC2GkJ (ORCPT + 29 others); Tue, 29 Mar 2016 02:40:09 -0400 Received: from mail-pa0-f44.google.com ([209.85.220.44]:35070 "EHLO mail-pa0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751549AbcC2GkF (ORCPT ); Tue, 29 Mar 2016 02:40:05 -0400 Received: by mail-pa0-f44.google.com with SMTP id td3so6784779pab.2 for ; Mon, 28 Mar 2016 23:40:04 -0700 (PDT) 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 :in-reply-to:references; bh=DRi4oR45U3eAnD3ENykqiSijwOzb2LEXFUb65dogRWk=; b=badi4ALBmEP4jzxfeTzEadE1dEH6MflTnywlQ6c+UkW/CLFoUIhr3wU0cmffu16V9E kAlzGu7OEj5FOsOQGgS5sfbTGyTFJ62e6gQlFL4dxCwIvOVNYQeau3VDxMS/UiIc9lzZ 7pXWxXcbq26vZhzFd1HtL6ZOWQOBH71dUIu8U= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=DRi4oR45U3eAnD3ENykqiSijwOzb2LEXFUb65dogRWk=; b=DS2uv7ktmtuC/gxMrLbiAYrQMQpn1amETvFc7zEWsod8G36caz0ibjC7KMneha+cDq T/b1J7QQ+Zzu6/KKZL6Gd40xGuP9b3/oUwTwqINLCdMWP7cjiD/3v68MRl2vv3H1Rtt7 cmcSxTKlt+sd7s5BfwtbU+q4CwpgOYgh7iVExlyX0RtN7Afs3uba8sNgSUCWXFbC/8BA dy78415ITmpUWdqoDhZgFfRDbrFOvhwx0oJewAiKazW09kFXaV24vBNgNPNyDaQUlkfZ nSMWrUrJyI5TDybsj8osnod5ChudNHyajCAQUGOr+HUVcZEcijMzXeQ3Qz8bCxUQIGV5 By1A== X-Gm-Message-State: AD7BkJItg/KOOi2si35e/vCJRwshBFRjF1JiFaRes92zAtKux7mETqhZw8YbNzTJ+W1NfXyM X-Received: by 10.67.24.104 with SMTP id ih8mr900049pad.124.1459233603751; Mon, 28 Mar 2016 23:40:03 -0700 (PDT) Received: from localhost ([122.167.169.132]) by smtp.gmail.com with ESMTPSA id q2sm40105272pfq.88.2016.03.28.23.40.02 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 28 Mar 2016 23:40:03 -0700 (PDT) From: Viresh Kumar To: Rafael Wysocki , arnd.bergmann@linaro.org, Viresh Kumar Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org, kgene.kim@samsung.com, xf@rock-chips.com, heiko@sntech.de, mmcclint@codeaurora.org, k.kozlowski@samsung.com, linux-kernel@vger.kernel.org Subject: [PATCH V1 Resend 2/3] cpufreq: dt: Add generic platform-device creation support Date: Tue, 29 Mar 2016 12:09:48 +0530 Message-Id: <2f2947872d41ecccc393d6ae95eafc72f205e03c.1459233524.git.viresh.kumar@linaro.org> X-Mailer: git-send-email 2.7.1.410.g6faf27b In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Multiple platforms are using the generic cpufreq-dt driver now, and all of them are required to create a platform device with name "cpufreq-dt", in order to get the cpufreq-dt probed. Many of them do it from platform code, others have special drivers just to do that. It would be more sensible to do this at a generic place, where all such platform can mark their entries. This patch adds a separate file to get this device created. Currently the compat list of platforms that we support is empty, and will be filled in as and when we move platforms to use it. It always compiles as part of the kernel and so doesn't need a module-exit operation. Signed-off-by: Viresh Kumar Reviewed-by: Krzysztof Kozlowski --- drivers/cpufreq/Kconfig | 11 +++++++++ drivers/cpufreq/Makefile | 1 + drivers/cpufreq/cpufreq-dt-platdev.c | 48 ++++++++++++++++++++++++++++++++++++ 3 files changed, 60 insertions(+) create mode 100644 drivers/cpufreq/cpufreq-dt-platdev.c -- 2.7.1.410.g6faf27b diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index a7f45853c103..08573d54105b 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -191,6 +191,7 @@ config CPUFREQ_DT depends on HAVE_CLK && OF # if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y: depends on !CPU_THERMAL || THERMAL + select CPUFREQ_DT_PLATDEV select PM_OPP help This adds a generic DT based cpufreq driver for frequency management. @@ -199,6 +200,16 @@ config CPUFREQ_DT If in doubt, say N. +config CPUFREQ_DT_PLATDEV + bool + depends on CPUFREQ_DT + help + This adds a generic DT based cpufreq platdev driver for frequency + management. This creates a 'cpufreq-dt' platform device, on the + supported platforms. + + If in doubt, say N. + if X86 source "drivers/cpufreq/Kconfig.x86" endif diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index 9e63fb1b09f8..b9224fdb8322 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE) += cpufreq_conservative.o obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o +obj-$(CONFIG_CPUFREQ_DT_PLATDEV) += cpufreq-dt-platdev.o ################################################################################## # x86 drivers. diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c new file mode 100644 index 000000000000..18b81724ca0b --- /dev/null +++ b/drivers/cpufreq/cpufreq-dt-platdev.c @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2016 Linaro. + * Viresh Kumar + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +struct cpufreq_dt_compat { + const char *compatible; + const void *data; + size_t size; +}; + +static struct cpufreq_dt_compat compat[] = { +}; + +static int __init cpufreq_dt_platdev_init(void) +{ + struct platform_device *pdev; + int i; + + for (i = 0; i < ARRAY_SIZE(compat); i++) { + if (!of_machine_is_compatible(compat[i].compatible)) + continue; + + pdev = platform_device_register_data(NULL, "cpufreq-dt", -1, + compat[i].data, + compat[i].size); + + return PTR_ERR_OR_ZERO(pdev); + } + + return -ENODEV; +} +module_init(cpufreq_dt_platdev_init); + +MODULE_ALIAS("cpufreq-dt-platdev"); +MODULE_AUTHOR("Viresh Kumar "); +MODULE_DESCRIPTION("cpufreq-dt platdev driver"); +MODULE_LICENSE("GPL");