From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> To: linux-arm-kernel@lists.infradead.org, Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>, Mark Brown <broonie@kernel.org>, s.hauer@pengutronix.de, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, arnd@arndb.de, sboyd@codeaurora.org, pantelis.antoniou@konsulko.com, mporter@konsulko.com, stefan.wahren@i2se.com, wxt@rock-chips.com, Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Subject: [PATCH v7 6/9] nvmem: qfprom: Add Qualcomm QFPROM support. Date: Fri, 10 Jul 2015 10:45:29 +0100 [thread overview] Message-ID: <1436521529-10931-1-git-send-email-srinivas.kandagatla@linaro.org> (raw) In-Reply-To: <1436521427-10568-1-git-send-email-srinivas.kandagatla@linaro.org> This patch adds QFPROM support driver which is used by other drivers like thermal sensor and cpufreq. On MSM parts there are some efuses (called qfprom) these fuses store things like calibration data, speed bins.. etc. Drivers like cpufreq, thermal sensors would read out this data for configuring the driver. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> --- drivers/nvmem/Kconfig | 15 +++++++++ drivers/nvmem/Makefile | 4 +++ drivers/nvmem/qfprom.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 106 insertions(+) create mode 100644 drivers/nvmem/qfprom.c diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index de90c82..fa85805 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -11,3 +11,18 @@ menuconfig NVMEM will be called nvmem_core. If unsure, say no. + +if NVMEM + +config QCOM_QFPROM + tristate "QCOM QFPROM Support" + depends on ARCH_QCOM || COMPILE_TEST + select REGMAP_MMIO + help + Say y here to enable QFPROM support. The QFPROM provides access + functions for QFPROM data to rest of the drivers via nvmem interface. + + This driver can also be built as a module. If so, the module + will be called nvmem_qfprom. + +endif diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index 6df2c69..ff44fe9 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -4,3 +4,7 @@ obj-$(CONFIG_NVMEM) += nvmem_core.o nvmem_core-y := core.o + +# Devices +obj-$(CONFIG_QCOM_QFPROM) += nvmem_qfprom.o +nvmem_qfprom-y := qfprom.o diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c new file mode 100644 index 0000000..0e22a03 --- /dev/null +++ b/drivers/nvmem/qfprom.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/device.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/nvmem-provider.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +static struct regmap_config qfprom_regmap_config = { + .reg_bits = 32, + .val_bits = 8, + .reg_stride = 1, +}; + +static struct nvmem_config econfig = { + .name = "qfprom", + .owner = THIS_MODULE, +}; + +static int qfprom_remove(struct platform_device *pdev) +{ + struct nvmem_device *nvmem = platform_get_drvdata(pdev); + + return nvmem_unregister(nvmem); +} + +static int qfprom_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct nvmem_device *nvmem; + struct regmap *regmap; + void __iomem *base; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + qfprom_regmap_config.max_register = resource_size(res) - 1; + + regmap = devm_regmap_init_mmio(dev, base, &qfprom_regmap_config); + if (IS_ERR(regmap)) { + dev_err(dev, "regmap init failed\n"); + return PTR_ERR(regmap); + } + econfig.dev = dev; + nvmem = nvmem_register(&econfig); + if (IS_ERR(nvmem)) + return PTR_ERR(nvmem); + + platform_set_drvdata(pdev, nvmem); + + return 0; +} + +static const struct of_device_id qfprom_of_match[] = { + { .compatible = "qcom,qfprom",}, + {/* sentinel */}, +}; +MODULE_DEVICE_TABLE(of, qfprom_of_match); + +static struct platform_driver qfprom_driver = { + .probe = qfprom_probe, + .remove = qfprom_remove, + .driver = { + .name = "qcom,qfprom", + .of_match_table = qfprom_of_match, + }, +}; +module_platform_driver(qfprom_driver); +MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org>"); +MODULE_DESCRIPTION("Qualcomm QFPROM driver"); +MODULE_LICENSE("GPL v2"); -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: srinivas.kandagatla@linaro.org (Srinivas Kandagatla) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v7 6/9] nvmem: qfprom: Add Qualcomm QFPROM support. Date: Fri, 10 Jul 2015 10:45:29 +0100 [thread overview] Message-ID: <1436521529-10931-1-git-send-email-srinivas.kandagatla@linaro.org> (raw) In-Reply-To: <1436521427-10568-1-git-send-email-srinivas.kandagatla@linaro.org> This patch adds QFPROM support driver which is used by other drivers like thermal sensor and cpufreq. On MSM parts there are some efuses (called qfprom) these fuses store things like calibration data, speed bins.. etc. Drivers like cpufreq, thermal sensors would read out this data for configuring the driver. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> --- drivers/nvmem/Kconfig | 15 +++++++++ drivers/nvmem/Makefile | 4 +++ drivers/nvmem/qfprom.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 106 insertions(+) create mode 100644 drivers/nvmem/qfprom.c diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index de90c82..fa85805 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -11,3 +11,18 @@ menuconfig NVMEM will be called nvmem_core. If unsure, say no. + +if NVMEM + +config QCOM_QFPROM + tristate "QCOM QFPROM Support" + depends on ARCH_QCOM || COMPILE_TEST + select REGMAP_MMIO + help + Say y here to enable QFPROM support. The QFPROM provides access + functions for QFPROM data to rest of the drivers via nvmem interface. + + This driver can also be built as a module. If so, the module + will be called nvmem_qfprom. + +endif diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index 6df2c69..ff44fe9 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -4,3 +4,7 @@ obj-$(CONFIG_NVMEM) += nvmem_core.o nvmem_core-y := core.o + +# Devices +obj-$(CONFIG_QCOM_QFPROM) += nvmem_qfprom.o +nvmem_qfprom-y := qfprom.o diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c new file mode 100644 index 0000000..0e22a03 --- /dev/null +++ b/drivers/nvmem/qfprom.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/device.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/nvmem-provider.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +static struct regmap_config qfprom_regmap_config = { + .reg_bits = 32, + .val_bits = 8, + .reg_stride = 1, +}; + +static struct nvmem_config econfig = { + .name = "qfprom", + .owner = THIS_MODULE, +}; + +static int qfprom_remove(struct platform_device *pdev) +{ + struct nvmem_device *nvmem = platform_get_drvdata(pdev); + + return nvmem_unregister(nvmem); +} + +static int qfprom_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct nvmem_device *nvmem; + struct regmap *regmap; + void __iomem *base; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + qfprom_regmap_config.max_register = resource_size(res) - 1; + + regmap = devm_regmap_init_mmio(dev, base, &qfprom_regmap_config); + if (IS_ERR(regmap)) { + dev_err(dev, "regmap init failed\n"); + return PTR_ERR(regmap); + } + econfig.dev = dev; + nvmem = nvmem_register(&econfig); + if (IS_ERR(nvmem)) + return PTR_ERR(nvmem); + + platform_set_drvdata(pdev, nvmem); + + return 0; +} + +static const struct of_device_id qfprom_of_match[] = { + { .compatible = "qcom,qfprom",}, + {/* sentinel */}, +}; +MODULE_DEVICE_TABLE(of, qfprom_of_match); + +static struct platform_driver qfprom_driver = { + .probe = qfprom_probe, + .remove = qfprom_remove, + .driver = { + .name = "qcom,qfprom", + .of_match_table = qfprom_of_match, + }, +}; +module_platform_driver(qfprom_driver); +MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org>"); +MODULE_DESCRIPTION("Qualcomm QFPROM driver"); +MODULE_LICENSE("GPL v2"); -- 1.9.1
next prev parent reply other threads:[~2015-07-10 9:45 UTC|newest] Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-07-10 9:43 [PATCH v7 0/9] Add simple NVMEM Framework via regmap Srinivas Kandagatla 2015-07-10 9:43 ` Srinivas Kandagatla 2015-07-10 9:44 ` [PATCH v7 2/9] nvmem: Add a simple NVMEM framework for consumers Srinivas Kandagatla 2015-07-10 9:44 ` Srinivas Kandagatla [not found] ` <1436521495-10728-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-07-10 10:42 ` Joe Perches 2015-07-10 10:42 ` Joe Perches 2015-07-10 10:42 ` Joe Perches 2015-07-13 19:06 ` Stefan Wahren 2015-07-13 19:06 ` Stefan Wahren 2015-07-13 19:06 ` Stefan Wahren 2015-07-13 19:24 ` Srinivas Kandagatla 2015-07-13 19:24 ` Srinivas Kandagatla 2015-07-10 9:45 ` [PATCH v7 3/9] nvmem: Add nvmem_device based consumer apis Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla [not found] ` <1436521505-10779-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-07-10 10:49 ` Joe Perches 2015-07-10 10:49 ` Joe Perches 2015-07-10 10:49 ` Joe Perches 2015-07-14 22:06 ` Stephen Boyd 2015-07-14 22:06 ` Stephen Boyd [not found] ` <20150714220607.GP30412-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2015-07-15 8:21 ` Srinivas Kandagatla 2015-07-15 8:21 ` Srinivas Kandagatla 2015-07-15 8:21 ` Srinivas Kandagatla 2015-07-10 9:45 ` [PATCH v7 4/9] nvmem: Add bindings for simple nvmem framework Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla [not found] ` <1436521513-10838-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-07-10 19:04 ` Rob Herring 2015-07-10 19:04 ` Rob Herring 2015-07-10 19:04 ` Rob Herring [not found] ` <CAL_JsqKYT-+T=D=TKCb1TcydOvBTE8_yc-EEe1cwdmhr1B0dHQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2015-07-13 10:21 ` Srinivas Kandagatla 2015-07-13 10:21 ` Srinivas Kandagatla 2015-07-13 10:21 ` Srinivas Kandagatla 2015-07-10 9:45 ` [PATCH v7 5/9] Documentation: nvmem: add nvmem api level and how-to doc Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla [not found] ` <1436521521-10889-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-07-14 21:32 ` Stephen Boyd 2015-07-14 21:32 ` Stephen Boyd 2015-07-14 21:32 ` Stephen Boyd 2015-07-14 22:00 ` Srinivas Kandagatla 2015-07-14 22:00 ` Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla [this message] 2015-07-10 9:45 ` [PATCH v7 6/9] nvmem: qfprom: Add Qualcomm QFPROM support Srinivas Kandagatla [not found] ` <1436521529-10931-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-07-14 21:18 ` Stephen Boyd 2015-07-14 21:18 ` Stephen Boyd 2015-07-14 21:18 ` Stephen Boyd [not found] ` <20150714211831.GN30412-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2015-07-14 22:02 ` Srinivas Kandagatla 2015-07-14 22:02 ` Srinivas Kandagatla 2015-07-14 22:02 ` Srinivas Kandagatla [not found] ` <1436521427-10568-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-07-10 9:44 ` [PATCH v7 1/9] nvmem: Add a simple NVMEM framework for nvmem providers Srinivas Kandagatla 2015-07-10 9:44 ` Srinivas Kandagatla 2015-07-10 9:44 ` Srinivas Kandagatla [not found] ` <1436521486-10682-1-git-send-email-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2015-07-10 10:29 ` Joe Perches 2015-07-10 10:29 ` Joe Perches 2015-07-10 10:29 ` Joe Perches 2015-07-10 10:39 ` Srinivas Kandagatla 2015-07-10 10:39 ` Srinivas Kandagatla 2015-07-13 16:50 ` Philipp Zabel 2015-07-13 16:50 ` Philipp Zabel 2015-07-13 16:50 ` Philipp Zabel 2015-07-10 9:45 ` [PATCH v7 7/9] nvmem: qfprom: Add bindings for qfprom Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla 2015-07-13 18:54 ` [PATCH v7 0/9] Add simple NVMEM Framework via regmap Stefan Wahren 2015-07-13 18:54 ` Stefan Wahren 2015-07-13 18:54 ` Stefan Wahren 2015-07-13 19:35 ` Srinivas Kandagatla 2015-07-13 19:35 ` Srinivas Kandagatla 2015-07-13 19:35 ` Srinivas Kandagatla 2015-07-13 20:11 ` Stefan Wahren 2015-07-13 20:11 ` Stefan Wahren [not found] ` <139301016.164015.1436818270753.JavaMail.open-xchange-0SF9iQWekqKZU4JK52HgGMgmgJlYmuWJ@public.gmane.org> 2015-07-13 21:39 ` Srinivas Kandagatla 2015-07-13 21:39 ` Srinivas Kandagatla 2015-07-13 21:39 ` Srinivas Kandagatla 2015-07-10 9:45 ` [PATCH v7 8/9] nvmem: sunxi: Move the SID driver to the nvmem framework Srinivas Kandagatla 2015-07-10 9:45 ` Srinivas Kandagatla 2015-07-10 9:46 ` [PATCH v7 9/9] nvmem: Add to MAINTAINERS for " Srinivas Kandagatla 2015-07-10 9:46 ` Srinivas Kandagatla
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