From patchwork Thu Nov 5 14:49:01 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 7565391 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3A1839F36A for ; Fri, 6 Nov 2015 02:08:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6232B207F9 for ; Fri, 6 Nov 2015 02:08:43 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id B65F6207C8 for ; Fri, 6 Nov 2015 02:08:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6FF416EB49; Thu, 5 Nov 2015 18:08:39 -0800 (PST) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.17.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id A68616EA8C for ; Thu, 5 Nov 2015 06:50:15 -0800 (PST) Received: from wuerfel.localnet ([134.3.118.24]) by mrelayeu.kundenserver.de (mreue102) with ESMTPSA (Nemesis) id 0LrsPm-1aair90OdS-013h23; Thu, 05 Nov 2015 15:49:15 +0100 From: Arnd Bergmann To: linux-arm-kernel@lists.infradead.org Subject: Re: [RFC PATCH 0/7] reset: make RESET_CONTROLLER a select'ed option Date: Thu, 05 Nov 2015 15:49:01 +0100 Message-ID: <3770393.BLNOaUSB5Q@wuerfel> User-Agent: KMail/4.11.5 (Linux/3.16.0-10-generic; KDE/4.11.5; x86_64; ; ) In-Reply-To: <1446722128-11961-1-git-send-email-yamada.masahiro@socionext.com> References: <1446722128-11961-1-git-send-email-yamada.masahiro@socionext.com> MIME-Version: 1.0 X-Provags-ID: V03:K0:vfudCbdgcCMMkcCO4J4RSjtqzd2jMnqKV5QaVWDXhExww6AYsR6 E/0YAawBKgEoU6pfII2aRjtF5gmGEw4rpSbSz/5CD2w1tQzKpnkqA0Xzddlpi/IfeWDYW51 Dy+3qbTV/fjaufK9DJh7UyRAKjBXVGxCqSXbd5q/18XqhWDH74xkUbjNfSTs4zSkneKjWp6 s+qqaZUEisLJV8fVF/SyA== X-UI-Out-Filterresults: notjunk:1; V01:K0:+Gw50vL9d4Q=:62V1OwXz9RW6fKM/BU1j4h CsaoGk+wH3XQdoqH3nbSzH7uzDxU2qjRT2vX6vnIV5SkCGnDOO78/whhGGcYQN+9zjmrI4OFX K1La8VhmHNKA4NulWO6Z1rZcohFqHVm1ciVt7Xn/2IvJTtTxkBvbV+awuo1kJ0MnlY0PS8cyu 1vxLmhL8py/WKSAXGgCc9sa7IE5FrlIkQkoJEG77mMr0/ilZ5pARP54acbjDanOIc6neyH8ho GLiEXyLSMvCJ2rc3ryWCWyvRcxktmdXYj/u6vCHgy4lMykyCCQDBZiXkzwyZ+ZzKP798gIXZe 8wS4nx/GnA/izEBu8QN1zqeUkz3PVjf3MhxfoowWm6wslahdb6ubEd5S2OKjcfCtOmFtI2/l4 4numgL+S107+j/lCOrosG1gpYoZ2FnVKAbXe51GHoMugiMPOb8hs6P6zUD8s/EJhgWs1MdXw1 sqVK8t+D1w+UyAIGdR19V+9L0uPlkI5YBKvmPTxQYkAFGJyOH8Q6/shF42FCXcy/2YH3oHcJN 5Sl6kfQ8RS+TM9gNKO0wZewKdnQw0sjL3KntpeL1IDBHL3cD1QZGB36d3bjBhpOM8Eyfr/F6o P9AOhxrSD3LazclIt7//PLiA04sOtMYdPFpAUEvF58AlY19dllvjAmNGCeDr2fOgVJ4anw2+3 SDKlSOQzuyjY6PllFsGazTzaDxf0qhNld11gPUsvbthaH64ff+vNMM3l6JuUyKBswD1Zkaj8l HIcqLbv35GdiphOS X-Mailman-Approved-At: Thu, 05 Nov 2015 18:08:38 -0800 Cc: linux-mips@linux-mips.org, kernel@stlinux.com, Catalin Marinas , Will Deacon , dri-devel@lists.freedesktop.org, Patrice Chotard , Masahiro Yamada , Benjamin Gaignard , Alexandre Courbot , Russell King , Daniel Lezcano , linux-rockchip@lists.infradead.org, Chen-Yu Tsai , Terje =?ISO-8859-1?Q?Bergstr=F6m?= , Sebastian Hesselbarth , Sascha Hauer , Stephen Warren , Haojian Zhuang , Hans de Goede , Mark Brown , Jens Kuske , linux-tegra@vger.kernel.org, Michael Turquette , Vincent Abriou , Maxime Coquelin , Barry Song , Vishnu Patekar , Eric Miao , linux-gpio@vger.kernel.org, Srinivas Kandagatla , linux-kernel@vger.kernel.org, Ralf Baechle , linux-spi@vger.kernel.org, Tuomas Tynkkynen , Maxime Ripard , Shawn Guo X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On Thursday 05 November 2015 20:15:21 Masahiro Yamada wrote: > When I was implementing a new reset controller for my SoCs, > I struggled to make my sub-menu shown under the reset > controller menu. > I noticed the Kconfig in reset sub-system are screwed up due to two > config options (ARCH_HAS_RESET_CONTROLLER and RESET_CONTROLLER). > > I think only the former should be select'ed by relevant SoCs, > but in fact the latter is also select'ed here and there. > Mixing "select" to a user-configurable option is a mess. > > Finally, I started to wonder whether it could be more simpler? > > The first patch drops ARCH_HAS_RESET_CONTROLLER. > RESET_CONTROLLER should be directly selected by SoCs. > > The rest of this series are minor clean ups in other > sub-systems. > I can postpone them if changes over cross sub-systems > are not preferred. Thanks a lot for picking up this topic! It has been annoying me for a while and I have submitted an experimental patch some time ago, but not finished it myself. For some reason, I only see a subset of your patches here (patch 1, 4 and 6), so I don't know exactly what you did. For reference, you can find my original patch below. Please check if I did things that your series doesn't do, and whether those are still needed. Arnd commit 7983ffe5e07a5aac0c9bdd657858e3b2b9842b30 Author: Arnd Bergmann Date: Tue Feb 24 15:30:30 2015 +0100 rework RESET_CONTROLLER handling diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2f5f6d0b09a6..ab137ae8dcc8 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -319,6 +319,7 @@ choice config ARCH_MULTIPLATFORM bool "Allow multiple platforms to be selected" + select ARCH_HAS_RESET_CONTROLLER select ARCH_WANT_OPTIONAL_GPIOLIB select ARM_HAS_SG_CHAIN select ARM_PATCH_PHYS_VIRT diff --git a/arch/arm/mach-berlin/Kconfig b/arch/arm/mach-berlin/Kconfig index 344434ca366c..2dc8f3df39e6 100644 --- a/arch/arm/mach-berlin/Kconfig +++ b/arch/arm/mach-berlin/Kconfig @@ -1,6 +1,5 @@ menuconfig ARCH_BERLIN bool "Marvell Berlin SoCs" if ARCH_MULTI_V7 - select ARCH_HAS_RESET_CONTROLLER select ARCH_REQUIRE_GPIOLIB select ARM_GIC select DW_APB_ICTL diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 8ceda2844c4f..1b1134adc188 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -58,7 +58,6 @@ config HAVE_IMX_MMDC config HAVE_IMX_SRC def_bool y if SMP - select ARCH_HAS_RESET_CONTROLLER config IMX_HAVE_IOMUX_V1 bool diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig index 4773fe1d8b3f..116502d776ab 100644 --- a/arch/arm/mach-mmp/Kconfig +++ b/arch/arm/mach-mmp/Kconfig @@ -113,6 +113,7 @@ config MACH_MMP_DT select PINCTRL_SINGLE select COMMON_CLK select ARCH_HAS_RESET_CONTROLLER + select RESET_CONTROLLER select CPU_MOHAWK help Include support for Marvell MMP2 based platforms using @@ -125,6 +126,7 @@ config MACH_MMP2_DT select PINCTRL select PINCTRL_SINGLE select ARCH_HAS_RESET_CONTROLLER + select RESET_CONTROLLER select CPU_PJ4 help Include support for Marvell MMP2 based platforms using diff --git a/arch/arm/mach-prima2/Kconfig b/arch/arm/mach-prima2/Kconfig index 9ab8932403e5..00adfc4a5cd6 100644 --- a/arch/arm/mach-prima2/Kconfig +++ b/arch/arm/mach-prima2/Kconfig @@ -1,12 +1,12 @@ menuconfig ARCH_SIRF bool "CSR SiRF" if ARCH_MULTI_V7 - select ARCH_HAS_RESET_CONTROLLER select ARCH_REQUIRE_GPIOLIB select GENERIC_IRQ_CHIP select NO_IOPORT_MAP select REGMAP select PINCTRL select PINCTRL_SIRF + select RESET_CONTROLLER help Support for CSR SiRFprimaII/Marco/Polo platforms diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig index ae4eb7cc4bcc..17d2df427c3c 100644 --- a/arch/arm/mach-rockchip/Kconfig +++ b/arch/arm/mach-rockchip/Kconfig @@ -2,7 +2,6 @@ config ARCH_ROCKCHIP bool "Rockchip RK2928 and RK3xxx SOCs" if ARCH_MULTI_V7 select PINCTRL select PINCTRL_ROCKCHIP - select ARCH_HAS_RESET_CONTROLLER select ARCH_REQUIRE_GPIOLIB select ARM_AMBA select ARM_GIC @@ -12,6 +11,7 @@ config ARCH_ROCKCHIP select HAVE_ARM_TWD if SMP select DW_APB_TIMER_OF select REGULATOR if PM + select RESET_CONTROLLER select ROCKCHIP_TIMER select ARM_GLOBAL_TIMER select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK diff --git a/arch/arm/mach-sti/Kconfig b/arch/arm/mach-sti/Kconfig index 125865daaf17..8092f4f84ee6 100644 --- a/arch/arm/mach-sti/Kconfig +++ b/arch/arm/mach-sti/Kconfig @@ -6,7 +6,6 @@ menuconfig ARCH_STI select PINCTRL select PINCTRL_ST select MFD_SYSCON - select ARCH_HAS_RESET_CONTROLLER select HAVE_ARM_SCU if SMP select ARCH_REQUIRE_GPIOLIB select ARM_ERRATA_754322 @@ -14,7 +13,6 @@ menuconfig ARCH_STI select ARM_ERRATA_775420 select PL310_ERRATA_753970 if CACHE_L2X0 select PL310_ERRATA_769419 if CACHE_L2X0 - select RESET_CONTROLLER help Include support for STiH41x SOCs like STiH415/416 using the device tree for discovery diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig index 4efe2d43a126..60b58ca02162 100644 --- a/arch/arm/mach-sunxi/Kconfig +++ b/arch/arm/mach-sunxi/Kconfig @@ -1,7 +1,6 @@ menuconfig ARCH_SUNXI bool "Allwinner SoCs" if ARCH_MULTI_V7 select ARCH_REQUIRE_GPIOLIB - select ARCH_HAS_RESET_CONTROLLER select CLKSRC_MMIO select GENERIC_IRQ_CHIP select PINCTRL diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c index c2be98f38e73..b1c39eed19f1 100644 --- a/arch/arm/mach-sunxi/sunxi.c +++ b/arch/arm/mach-sunxi/sunxi.c @@ -45,7 +45,7 @@ extern void __init sun6i_reset_init(void); static void __init sun6i_timer_init(void) { of_clk_init(NULL); - if (IS_ENABLED(CONFIG_RESET_CONTROLLER)) + if (IS_ENABLED(CONFIG_RESET_SUNXI)) sun6i_reset_init(); clocksource_probe(); } diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index 0fa4c5f8b1be..269efaaa6843 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -9,7 +9,6 @@ menuconfig ARCH_TEGRA select HAVE_ARM_TWD if SMP select PINCTRL select PM_OPP - select ARCH_HAS_RESET_CONTROLLER select RESET_CONTROLLER select SOC_BUS select USB_ULPI if USB_PHY diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index e6cd1a32025a..b93b75bf0a2d 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -159,7 +159,6 @@ config DMA_SUN4I config DMA_SUN6I tristate "Allwinner A31 SoCs DMA support" depends on MACH_SUN6I || MACH_SUN8I || COMPILE_TEST - depends on RESET_CONTROLLER select DMA_ENGINE select DMA_VIRTUAL_CHANNELS help diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig index 35215f6867d3..cb21e3821244 100644 --- a/drivers/gpu/drm/rockchip/Kconfig +++ b/drivers/gpu/drm/rockchip/Kconfig @@ -1,7 +1,6 @@ config DRM_ROCKCHIP tristate "DRM Support for Rockchip" depends on DRM && ROCKCHIP_IOMMU - depends on RESET_CONTROLLER select DRM_KMS_HELPER select DRM_KMS_FB_HELPER select DRM_PANEL diff --git a/drivers/gpu/drm/sti/Kconfig b/drivers/gpu/drm/sti/Kconfig index e3aa5afc0244..8aeb4cdd76e5 100644 --- a/drivers/gpu/drm/sti/Kconfig +++ b/drivers/gpu/drm/sti/Kconfig @@ -1,7 +1,6 @@ config DRM_STI tristate "DRM Support for STMicroelectronics SoC stiH41x Series" depends on DRM && (SOC_STIH415 || SOC_STIH416 || ARCH_MULTIPLATFORM) && HAVE_DMA_ATTRS - select RESET_CONTROLLER select DRM_KMS_HELPER select DRM_GEM_CMA_HELPER select DRM_KMS_CMA_HELPER diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig index 63ebb154b9b5..bbf5a4b7e0b6 100644 --- a/drivers/gpu/drm/tegra/Kconfig +++ b/drivers/gpu/drm/tegra/Kconfig @@ -3,7 +3,6 @@ config DRM_TEGRA depends on ARCH_TEGRA || (ARM && COMPILE_TEST) depends on COMMON_CLK depends on DRM - depends on RESET_CONTROLLER select DRM_KMS_HELPER select DRM_MIPI_DSI select DRM_PANEL diff --git a/drivers/gpu/ipu-v3/Kconfig b/drivers/gpu/ipu-v3/Kconfig index aefdff95356d..08766c6e7856 100644 --- a/drivers/gpu/ipu-v3/Kconfig +++ b/drivers/gpu/ipu-v3/Kconfig @@ -1,7 +1,6 @@ config IMX_IPUV3_CORE tristate "IPUv3 core support" depends on SOC_IMX5 || SOC_IMX6Q || ARCH_MULTIPLATFORM - depends on RESET_CONTROLLER select GENERIC_IRQ_CHIP help Choose this if you have a i.MX5/6 system and want to use the Image diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index e24c2b680b47..775134dc7fc3 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -886,7 +886,6 @@ config I2C_STU300 config I2C_SUN6I_P2WI tristate "Allwinner sun6i internal P2WI controller" - depends on RESET_CONTROLLER depends on MACH_SUN6I || COMPILE_TEST help If you say yes to this option, support will be included for the diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 7eb5859dd035..53d92382030f 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -17,7 +17,8 @@ config GENERIC_PHY config PHY_BERLIN_USB tristate "Marvell Berlin USB PHY Driver" - depends on ARCH_BERLIN && RESET_CONTROLLER && HAS_IOMEM && OF + depends on ARCH_BERLIN || COMPILE_TEST + depends on HAS_IOMEM && OF select GENERIC_PHY help Enable this to support the USB PHY on Marvell Berlin SoCs. @@ -218,7 +219,6 @@ config PHY_MT65XX_USB3 config PHY_SUN4I_USB tristate "Allwinner sunxi SoC USB PHY driver" depends on ARCH_SUNXI && HAS_IOMEM && OF - depends on RESET_CONTROLLER depends on EXTCON depends on POWER_SUPPLY select GENERIC_PHY @@ -232,7 +232,6 @@ config PHY_SUN4I_USB config PHY_SUN9I_USB tristate "Allwinner sun9i SoC USB PHY driver" depends on ARCH_SUNXI && HAS_IOMEM && OF - depends on RESET_CONTROLLER select GENERIC_PHY help Enable this to support the transceiver that is part of Allwinner @@ -342,7 +341,6 @@ config PHY_XGENE config PHY_STIH407_USB tristate "STMicroelectronics USB2 picoPHY driver for STiH407 family" - depends on RESET_CONTROLLER depends on ARCH_STI || COMPILE_TEST select GENERIC_PHY help diff --git a/drivers/pinctrl/sunxi/Kconfig b/drivers/pinctrl/sunxi/Kconfig index e68fd951129a..50bd2e37aaeb 100644 --- a/drivers/pinctrl/sunxi/Kconfig +++ b/drivers/pinctrl/sunxi/Kconfig @@ -27,7 +27,6 @@ config PINCTRL_SUN6I_A31S config PINCTRL_SUN6I_A31_R def_bool MACH_SUN6I - depends on RESET_CONTROLLER select PINCTRL_SUNXI_COMMON config PINCTRL_SUN7I_A20 @@ -48,7 +47,6 @@ config PINCTRL_SUN8I_A83T config PINCTRL_SUN8I_A23_R def_bool MACH_SUN8I - depends on RESET_CONTROLLER select PINCTRL_SUNXI_COMMON config PINCTRL_SUN9I_A80 diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 0615f50a14cd..12026a1893b5 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -1,15 +1,24 @@ -config ARCH_HAS_RESET_CONTROLLER +config RESET_CONTROLLER bool -menuconfig RESET_CONTROLLER - bool "Reset Controller Support" - default y if ARCH_HAS_RESET_CONTROLLER - help - Generic Reset Controller support. +menu "Reset Controller Support" + depends on ARCH_HAS_RESET_CONTROLLER || COMPILE_TEST - This framework is designed to abstract reset handling of devices - via GPIOs or SoC-internal reset controller modules. +config RESET_SOCFPGA + bool "Altera SOCFPGA reset controller" if COMPILE_TEST + default ARCH_SOCFPGA + select RESET_CONTROLLER - If unsure, say no. +config RESET_BERLIN + bool "Marvell Berlin reset controller" if COMPILE_TEST + default ARCH_BERLIN + select RESET_CONTROLLER + +config RESET_SUNXI + bool "Allwinner reset controller" if COMPILE_TEST + default ARCH_SUNXI + select RESET_CONTROLLER source "drivers/reset/sti/Kconfig" + +endmenu diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index 85d5904e5480..e05aeffb692f 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -1,8 +1,8 @@ obj-$(CONFIG_RESET_CONTROLLER) += core.o obj-$(CONFIG_ARCH_LPC18XX) += reset-lpc18xx.o -obj-$(CONFIG_ARCH_SOCFPGA) += reset-socfpga.o -obj-$(CONFIG_ARCH_BERLIN) += reset-berlin.o -obj-$(CONFIG_ARCH_SUNXI) += reset-sunxi.o -obj-$(CONFIG_ARCH_STI) += sti/ +obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o +obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o +obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o +obj-$(CONFIG_RESET_STI_SYSCFG) += sti/ obj-$(CONFIG_ARCH_ZYNQ) += reset-zynq.o obj-$(CONFIG_ATH79) += reset-ath79.o diff --git a/drivers/reset/sti/Kconfig b/drivers/reset/sti/Kconfig index f8c15a37fb35..ef9bb8675577 100644 --- a/drivers/reset/sti/Kconfig +++ b/drivers/reset/sti/Kconfig @@ -1,19 +1,19 @@ -if ARCH_STI +if ARCH_STI || COMPILE_TEST -config STI_RESET_SYSCFG +config RESET_STI_SYSCFG bool select RESET_CONTROLLER -config STIH415_RESET - bool - select STI_RESET_SYSCFG +config RESET_STIH415 + bool "STmicroelectronics STiH415 reset controller" if COMPILE_TEST + select RESET_STI_SYSCFG -config STIH416_RESET - bool - select STI_RESET_SYSCFG +config RESET_STIH416 + bool "STmicroelectronics STiH416 reset controller" if COMPILE_TEST + select RESET_STI_SYSCFG -config STIH407_RESET - bool - select STI_RESET_SYSCFG +config RESET_STIH407 + bool "STmicroelectronics STiH407 reset controller" if COMPILE_TEST + select RESET_STI_SYSCFG endif diff --git a/drivers/reset/sti/Makefile b/drivers/reset/sti/Makefile index dc85dfbe56a9..445bdddf45b9 100644 --- a/drivers/reset/sti/Makefile +++ b/drivers/reset/sti/Makefile @@ -1,5 +1,5 @@ -obj-$(CONFIG_STI_RESET_SYSCFG) += reset-syscfg.o +obj-$(CONFIG_RESET_STI_SYSCFG) += reset-syscfg.o -obj-$(CONFIG_STIH415_RESET) += reset-stih415.o -obj-$(CONFIG_STIH416_RESET) += reset-stih416.o -obj-$(CONFIG_STIH407_RESET) += reset-stih407.o +obj-$(CONFIG_RESET_STIH415) += reset-stih415.o +obj-$(CONFIG_RESET_STIH416) += reset-stih416.o +obj-$(CONFIG_RESET_STIH407) += reset-stih407.o diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig index 9d5068248aa0..511c40e08780 100644 --- a/drivers/soc/mediatek/Kconfig +++ b/drivers/soc/mediatek/Kconfig @@ -13,7 +13,6 @@ config MTK_INFRACFG config MTK_PMIC_WRAP tristate "MediaTek PMIC Wrapper Support" depends on ARCH_MEDIATEK - depends on RESET_CONTROLLER select REGMAP help Say yes here to add support for MediaTek PMIC Wrapper found diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index b046fd94346a..4a62428836f3 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -527,7 +527,6 @@ config SPI_SH_HSPI config SPI_SIRF tristate "CSR SiRFprimaII SPI controller" depends on SIRF_DMA - depends on RESET_CONTROLLER select SPI_BITBANG help SPI driver for CSR SiRFprimaII SoCs @@ -548,7 +547,6 @@ config SPI_SUN4I config SPI_SUN6I tristate "Allwinner A31 SPI controller" depends on ARCH_SUNXI || COMPILE_TEST - depends on RESET_CONTROLLER help This enables using the SPI controller on the Allwinner A31 SoCs. @@ -562,7 +560,7 @@ config SPI_MXS config SPI_TEGRA114 tristate "NVIDIA Tegra114 SPI Controller" depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST - depends on RESET_CONTROLLER && HAS_DMA + depends on HAS_DMA help SPI driver for NVIDIA Tegra114 SPI Controller interface. This controller is different than the older SoCs SPI controller and also register interface @@ -571,7 +569,6 @@ config SPI_TEGRA114 config SPI_TEGRA20_SFLASH tristate "Nvidia Tegra20 Serial flash Controller" depends on ARCH_TEGRA || COMPILE_TEST - depends on RESET_CONTROLLER help SPI driver for Nvidia Tegra20 Serial flash Controller interface. The main usecase of this controller is to use spi flash as boot @@ -580,7 +577,7 @@ config SPI_TEGRA20_SFLASH config SPI_TEGRA20_SLINK tristate "Nvidia Tegra20/Tegra30 SLINK Controller" depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST - depends on RESET_CONTROLLER && HAS_DMA + depends on HAS_DMA help SPI driver for Nvidia Tegra20/Tegra30 SLINK Controller interface. diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index c463c89b90ef..2e7524f0f3f7 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -205,7 +205,6 @@ config SPEAR_THERMAL config ROCKCHIP_THERMAL tristate "Rockchip thermal driver" depends on ARCH_ROCKCHIP || COMPILE_TEST - depends on RESET_CONTROLLER help Rockchip thermal driver provides support for Temperature sensor ADC (TS-ADC) found on Rockchip SoCs. It supports one critical diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 173132416170..7acb038fd26a 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -140,7 +140,6 @@ config USB_ISP1301 config USB_MSM_OTG tristate "Qualcomm on-chip USB OTG controller support" depends on (USB || USB_GADGET) && (ARCH_QCOM || COMPILE_TEST) - depends on RESET_CONTROLLER depends on EXTCON select USB_PHY help diff --git a/include/linux/reset.h b/include/linux/reset.h index 7f65f9cff951..56c389347096 100644 --- a/include/linux/reset.h +++ b/include/linux/reset.h @@ -40,38 +40,49 @@ struct reset_control *of_reset_control_get(struct device_node *node, #else +#include +#include + +static inline int __must_check device_reset(struct device *dev) +{ + return -ENOSYS; +} + static inline int reset_control_reset(struct reset_control *rstc) { - WARN_ON(1); + WARN_ON(rstc != NULL); return 0; } static inline int reset_control_assert(struct reset_control *rstc) { - WARN_ON(1); + WARN_ON(rstc != NULL); return 0; } static inline int reset_control_deassert(struct reset_control *rstc) { - WARN_ON(1); + WARN_ON(rstc != NULL); return 0; } static inline int reset_control_status(struct reset_control *rstc) { - WARN_ON(1); + WARN_ON(rstc != NULL); return 0; } static inline void reset_control_put(struct reset_control *rstc) { - WARN_ON(1); + WARN_ON(rstc != NULL); } static inline int device_reset_optional(struct device *dev) { - return -ENOSYS; + if (of_property_read_bool(dev->of_node, "resets")) + return -ENOSYS; + + return 0; } static inline struct reset_control *__must_check reset_control_get( @@ -88,16 +99,21 @@ static inline struct reset_control *__must_check devm_reset_control_get( return ERR_PTR(-EINVAL); } +/* + * We intentionally return NULL here when no resets are specified + * or when building without DT, which is interpreted as 'success' + * if reset controller support is left out from the kernel. + */ static inline struct reset_control *reset_control_get_optional( struct device *dev, const char *id) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(device_reset_optional(dev)); } static inline struct reset_control *devm_reset_control_get_optional( struct device *dev, const char *id) { - return ERR_PTR(-ENOSYS); + return reset_control_get_optional(dev, id); } static inline struct reset_control *of_reset_control_get( diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig index a6768f832c6f..70f58bd43a56 100644 --- a/sound/soc/tegra/Kconfig +++ b/sound/soc/tegra/Kconfig @@ -2,7 +2,6 @@ config SND_SOC_TEGRA tristate "SoC Audio for the Tegra System-on-Chip" depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST depends on COMMON_CLK - depends on RESET_CONTROLLER select REGMAP_MMIO select SND_SOC_GENERIC_DMAENGINE_PCM help