From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srinivas Kandagatla 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> References: <1461526096-29584-1-git-send-email-srinivas.kandagatla@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1461526096-29584-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+glpar-linux-rockchip=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: Greg Kroah-Hartman Cc: andrew-g2DYL2Zd6BY@public.gmane.org, Heiko Stuebner , Wolfram Sang , Joachim Eastwood , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Chen-Yu Tsai , Mark Brown , Srinivas Kandagatla , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Matthias Brugger , linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Maxime Ripard , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-i2c@vger.kernel.org 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