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[194.187.74.233]) by smtp.gmail.com with ESMTPSA id 1-20020a170906218100b008720c458bd4sm9509608eju.3.2023.01.31.22.52.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Jan 2023 22:52:35 -0800 (PST) From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= To: Srinivas Kandagatla , Rob Herring , Krzysztof Kozlowski Cc: Matthias Brugger , Kunihiko Hayashi , Masami Hiramatsu , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= Subject: [PATCH 4/4] nvmem: uniphier-efuse: replace driver with a generic MMIO one Date: Wed, 1 Feb 2023 07:47:17 +0100 Message-Id: <20230201064717.18410-5-zajec5@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230201064717.18410-1-zajec5@gmail.com> References: <20230201064717.18410-1-zajec5@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Rafał Miłecki UniPhier eFuse uses a simple MMIO that can be handled with a generic driver. Replace this driver to avoid code duplication. Keep Kconfig symbol for a release or two to help with "make oldconfig". Signed-off-by: Rafał Miłecki --- drivers/nvmem/Kconfig | 7 ++- drivers/nvmem/Makefile | 2 - drivers/nvmem/mmio.c | 1 + drivers/nvmem/uniphier-efuse.c | 78 ---------------------------------- 4 files changed, 4 insertions(+), 84 deletions(-) delete mode 100644 drivers/nvmem/uniphier-efuse.c diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 4d652c7382a6..d65950da39b0 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -359,12 +359,11 @@ config NVMEM_UNIPHIER_EFUSE tristate "UniPhier SoCs eFuse support" depends on ARCH_UNIPHIER || COMPILE_TEST depends on HAS_IOMEM + select NVMEM_MMIO help - This is a simple driver to dump specified values of UniPhier SoC - from eFuse. + This driver has been replaced by a generic MMIO implementation. - This driver can also be built as a module. If so, the module - will be called nvmem-uniphier-efuse. + Update your config as this symbol will be dropped in the next release. config NVMEM_VF610_OCOTP tristate "VF610 SoC OCOTP support" diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index 7a8e29ea408e..70dd1154c832 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -67,8 +67,6 @@ obj-$(CONFIG_NVMEM_SUNPLUS_OCOTP) += nvmem_sunplus_ocotp.o nvmem_sunplus_ocotp-y := sunplus-ocotp.o obj-$(CONFIG_NVMEM_SUNXI_SID) += nvmem_sunxi_sid.o nvmem_sunxi_sid-y := sunxi_sid.o -obj-$(CONFIG_NVMEM_UNIPHIER_EFUSE) += nvmem-uniphier-efuse.o -nvmem-uniphier-efuse-y := uniphier-efuse.o obj-$(CONFIG_NVMEM_VF610_OCOTP) += nvmem-vf610-ocotp.o nvmem-vf610-ocotp-y := vf610-ocotp.o obj-$(CONFIG_NVMEM_ZYNQMP) += nvmem_zynqmp_nvmem.o diff --git a/drivers/nvmem/mmio.c b/drivers/nvmem/mmio.c index 253ade72e0c3..f44ff2a56c56 100644 --- a/drivers/nvmem/mmio.c +++ b/drivers/nvmem/mmio.c @@ -60,6 +60,7 @@ static const struct of_device_id mmio_nvmem_of_match_table[] = { /* Custom bindings that were introduced before the mmio one */ { .compatible = "mediatek,mt8173-efuse", }, { .compatible = "mediatek,efuse", }, + { .compatible = "socionext,uniphier-efuse", }, {}, }; diff --git a/drivers/nvmem/uniphier-efuse.c b/drivers/nvmem/uniphier-efuse.c deleted file mode 100644 index aca910b3b6f8..000000000000 --- a/drivers/nvmem/uniphier-efuse.c +++ /dev/null @@ -1,78 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * UniPhier eFuse driver - * - * Copyright (C) 2017 Socionext Inc. - */ - -#include -#include -#include -#include -#include -#include - -struct uniphier_efuse_priv { - void __iomem *base; -}; - -static int uniphier_reg_read(void *context, - unsigned int reg, void *_val, size_t bytes) -{ - struct uniphier_efuse_priv *priv = context; - u8 *val = _val; - int offs; - - for (offs = 0; offs < bytes; offs += sizeof(u8)) - *val++ = readb(priv->base + reg + offs); - - return 0; -} - -static int uniphier_efuse_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct resource *res; - struct nvmem_device *nvmem; - struct nvmem_config econfig = {}; - struct uniphier_efuse_priv *priv; - - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - priv->base = devm_ioremap_resource(dev, res); - if (IS_ERR(priv->base)) - return PTR_ERR(priv->base); - - econfig.stride = 1; - econfig.word_size = 1; - econfig.read_only = true; - econfig.reg_read = uniphier_reg_read; - econfig.size = resource_size(res); - econfig.priv = priv; - econfig.dev = dev; - nvmem = devm_nvmem_register(dev, &econfig); - - return PTR_ERR_OR_ZERO(nvmem); -} - -static const struct of_device_id uniphier_efuse_of_match[] = { - { .compatible = "socionext,uniphier-efuse",}, - {/* sentinel */}, -}; -MODULE_DEVICE_TABLE(of, uniphier_efuse_of_match); - -static struct platform_driver uniphier_efuse_driver = { - .probe = uniphier_efuse_probe, - .driver = { - .name = "uniphier-efuse", - .of_match_table = uniphier_efuse_of_match, - }, -}; -module_platform_driver(uniphier_efuse_driver); - -MODULE_AUTHOR("Keiji Hayashibara "); -MODULE_DESCRIPTION("UniPhier eFuse driver"); -MODULE_LICENSE("GPL v2");