Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753358AbcDXT3k (ORCPT ); Sun, 24 Apr 2016 15:29:40 -0400 Received: from mail-wm0-f49.google.com ([74.125.82.49]:35099 "EHLO mail-wm0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753231AbcDXT2o (ORCPT ); Sun, 24 Apr 2016 15:28:44 -0400 From: Srinivas Kandagatla To: Greg Kroah-Hartman Cc: Wolfram Sang , Srinivas Kandagatla , Maxime Ripard , Joachim Eastwood , Matthias Brugger , Heiko Stuebner , Chen-Yu Tsai , linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, Mark Brown , andrew@lunn.ch Subject: [PATCH 08/12] nvmem: mtk-efuse: remove nvmem regmap dependency Date: Sun, 24 Apr 2016 20:28:12 +0100 Message-Id: <1461526096-29584-9-git-send-email-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1461526096-29584-1-git-send-email-srinivas.kandagatla@linaro.org> References: <1461526096-29584-1-git-send-email-srinivas.kandagatla@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2674 Lines: 98 This patch moves to nvmem support in the driver to use callback instead of regmap. Signed-off-by: Srinivas Kandagatla --- drivers/nvmem/Kconfig | 1 - drivers/nvmem/mtk-efuse.c | 47 ++++++++++++++++++++++++++++++++--------------- 2 files changed, 32 insertions(+), 16 deletions(-) diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 377bc21..c158712 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -48,7 +48,6 @@ config NVMEM_MXS_OCOTP config MTK_EFUSE tristate "Mediatek SoCs EFUSE support" depends on ARCH_MEDIATEK || COMPILE_TEST - select REGMAP_MMIO help This is a driver to access hardware related data like sensor calibration, HDMI impedance etc. diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c index 9c49369..32fd572 100644 --- a/drivers/nvmem/mtk-efuse.c +++ b/drivers/nvmem/mtk-efuse.c @@ -14,15 +14,35 @@ #include #include +#include #include #include -#include -static struct regmap_config mtk_regmap_config = { - .reg_bits = 32, - .val_bits = 32, - .reg_stride = 4, -}; +static int mtk_reg_read(void *context, + unsigned int reg, void *_val, size_t bytes) +{ + void __iomem *base = context; + u32 *val = _val; + int i = 0, words = bytes / 4; + + while (words--) + *val++ = readl(base + reg + (i++ * 4)); + + return 0; +} + +static int mtk_reg_write(void *context, + unsigned int reg, void *_val, size_t bytes) +{ + void __iomem *base = context; + u32 *val = _val; + int i = 0, words = bytes / 4; + + while (words--) + writel(*val++, base + reg + (i++ * 4)); + + return 0; +} static int mtk_efuse_probe(struct platform_device *pdev) { @@ -30,7 +50,6 @@ static int mtk_efuse_probe(struct platform_device *pdev) struct resource *res; struct nvmem_device *nvmem; struct nvmem_config *econfig; - struct regmap *regmap; void __iomem *base; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -42,14 +61,12 @@ static int mtk_efuse_probe(struct platform_device *pdev) if (!econfig) return -ENOMEM; - mtk_regmap_config.max_register = resource_size(res) - 1; - - regmap = devm_regmap_init_mmio(dev, base, &mtk_regmap_config); - if (IS_ERR(regmap)) { - dev_err(dev, "regmap init failed\n"); - return PTR_ERR(regmap); - } - + econfig->stride = 4; + econfig->word_size = 4; + econfig->reg_read = mtk_reg_read; + econfig->reg_write = mtk_reg_write; + econfig->size = resource_size(res); + econfig->priv = base; econfig->dev = dev; econfig->owner = THIS_MODULE; nvmem = nvmem_register(econfig); -- 2.5.0