From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751987AbaLRFsY (ORCPT ); Thu, 18 Dec 2014 00:48:24 -0500 Received: from mail-pa0-f53.google.com ([209.85.220.53]:47573 "EHLO mail-pa0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751918AbaLRFsQ (ORCPT ); Thu, 18 Dec 2014 00:48:16 -0500 From: gyungoh@gmail.com X-Google-Original-From: jack.yoo@skyworksinc.com To: sameo@linux.intel.com, lee.jones@linaro.org, grant.likely@linaro.org, robh+dt@kernel.org, jg1.han@samsung.com, cooloney@gmail.com, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, trivial@kernel.org Cc: akpm@linux-foundation.org, jic23@kernel.org, thomas.petazzoni@free-electrons.com, ktsai@capellamicro.com, hs@denx.de, stwiss.opensource@diasemi.com, matti.vaittinen@nsn.com, broonie@kernel.org, jason@lakedaemon.net, heiko@sntech.de, shawn.guo@freescale.com, florian.vaussard@epfl.ch, andrew@lunn.ch, antonynpavlov@gmail.com, hytszk@gmail.com, plagnioj@jcrosoft.com, tomi.valkeinen@ti.com, jack.yoo@skyworksinc.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v10 1/6] mfd: Add support for Skyworks SKY81452 driver Date: Thu, 18 Dec 2014 14:47:46 +0900 Message-Id: <1418881671-3495-2-git-send-email-jack.yoo@skyworksinc.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1418881671-3495-1-git-send-email-jack.yoo@skyworksinc.com> References: <1418881671-3495-1-git-send-email-jack.yoo@skyworksinc.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Gyungoh Yoo Signed-off-by: Gyungoh Yoo Acked-by: Lee Jones --- Changes v10: Nothing Changes v9: Nothing Changes v8: Nothing Changes v7: Modified licensing text to GPLv2 Changes v6: Added new line character at the end of line of dev_err() Changes v5: Move sky81452-backlight.h to include/linux/platform_data Changes v4: Removed MODULE_VERSION() Modified license to GPLv2 Changes v3: Fixed the backlight name from 'sky81452-bl' to 'sky81452-backlight' Assigned mfd_cell.of_compatible for binding device node Modified error messages Changes v2: Renamed CONFIG_SKY81452 to CONFIG_MFD_SKY81452 Changed the dependency from I2C=y to I2C, for CONFIG_MFD_SKY81452 Added message for exception or errors drivers/mfd/Kconfig | 12 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/sky81452.c | 108 +++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/sky81452.h | 31 +++++++++++++ 4 files changed, 152 insertions(+) create mode 100644 drivers/mfd/sky81452.c create mode 100644 include/linux/mfd/sky81452.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 1456ea7..a54244c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -693,6 +693,18 @@ config MFD_SM501_GPIO lines on the SM501. The platform data is used to supply the base number for the first GPIO line to register. +config MFD_SKY81452 + tristate "Skyworks Solutions SKY81452" + select MFD_CORE + select REGMAP_I2C + depends on I2C + help + This is the core driver for the Skyworks SKY81452 backlight and + voltage regulator device. + + This driver can also be built as a module. If so, the module + will be called sky81452. + config MFD_SMSC bool "SMSC ECE1099 series chips" depends on I2C=y diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 8bd54b1..d9683ea 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -174,6 +174,7 @@ obj-$(CONFIG_MFD_STW481X) += stw481x.o obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o +obj-$(CONFIG_MFD_SKY81452) += sky81452.o intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o diff --git a/drivers/mfd/sky81452.c b/drivers/mfd/sky81452.c new file mode 100644 index 0000000..b0c9b04 --- /dev/null +++ b/drivers/mfd/sky81452.c @@ -0,0 +1,108 @@ +/* + * sky81452.c SKY81452 MFD driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct regmap_config sky81452_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int sky81452_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + const struct sky81452_platform_data *pdata = dev_get_platdata(dev); + struct mfd_cell cells[2]; + struct regmap *regmap; + int ret; + + if (!pdata) { + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + } + + regmap = devm_regmap_init_i2c(client, &sky81452_config); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + i2c_set_clientdata(client, regmap); + + memset(cells, 0, sizeof(cells)); + cells[0].name = "sky81452-backlight"; + cells[0].of_compatible = "skyworks,sky81452-backlight"; + cells[0].platform_data = pdata->bl_pdata; + cells[0].pdata_size = sizeof(*pdata->bl_pdata); + cells[1].name = "sky81452-regulator"; + cells[1].platform_data = pdata->regulator_init_data; + cells[1].pdata_size = sizeof(*pdata->regulator_init_data); + + ret = mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells), NULL, 0, NULL); + if (ret) + dev_err(dev, "failed to add child devices. err=%d\n", ret); + + return ret; +} + +static int sky81452_remove(struct i2c_client *client) +{ + mfd_remove_devices(&client->dev); + return 0; +} + +static const struct i2c_device_id sky81452_ids[] = { + { "sky81452" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, sky81452_ids); + +#ifdef CONFIG_OF +static const struct of_device_id sky81452_of_match[] = { + { .compatible = "skyworks,sky81452", }, + { } +}; +MODULE_DEVICE_TABLE(of, sky81452_of_match); +#endif + +static struct i2c_driver sky81452_driver = { + .driver = { + .name = "sky81452", + .of_match_table = of_match_ptr(sky81452_of_match), + }, + .probe = sky81452_probe, + .remove = sky81452_remove, + .id_table = sky81452_ids, +}; + +module_i2c_driver(sky81452_driver); + +MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver"); +MODULE_AUTHOR("Gyungoh Yoo "); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/sky81452.h b/include/linux/mfd/sky81452.h new file mode 100644 index 0000000..b0925fa --- /dev/null +++ b/include/linux/mfd/sky81452.h @@ -0,0 +1,31 @@ +/* + * sky81452.h SKY81452 MFD driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#ifndef _SKY81452_H +#define _SKY81452_H + +#include +#include + +struct sky81452_platform_data { + struct sky81452_bl_platform_data *bl_pdata; + struct regulator_init_data *regulator_init_data; +}; + +#endif -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: gyungoh-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Subject: [PATCH v10 1/6] mfd: Add support for Skyworks SKY81452 driver Date: Thu, 18 Dec 2014 14:47:46 +0900 Message-ID: <1418881671-3495-2-git-send-email-jack.yoo@skyworksinc.com> References: <1418881671-3495-1-git-send-email-jack.yoo@skyworksinc.com> Return-path: In-Reply-To: <1418881671-3495-1-git-send-email-jack.yoo-tjhQNA90jdKqndwCJWfcng@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: sameo-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, jg1.han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, cooloney-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, trivial-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org, ktsai-GubuWUlQtMwciDkP5Hr2oA@public.gmane.org, hs-ynQEQJNshbs@public.gmane.org, stwiss.opensource-WBD+wuPFNBhBDgjK7y7TUQ@public.gmane.org, matti.vaittinen-OYasijW0DpE@public.gmane.org, broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org, heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, shawn.guo-KZfg59tc24xl57MIdRCFDg@public.gmane.org, florian.vaussard-p8DiymsW2f8@public.gmane.org, andrew-g2DYL2Zd6BY@public.gmane.org, antonynpavlov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, hytszk-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, plagnioj-sclMFOaUSTBWk0Htik3J/w@public.gmane.org, tomi.valkeinen-l0cyMroinI0@public.gmane.org, jack.yoo-tjhQNA90jdKqndwCJWfcng@public.gmane.org, linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org From: Gyungoh Yoo Signed-off-by: Gyungoh Yoo Acked-by: Lee Jones --- Changes v10: Nothing Changes v9: Nothing Changes v8: Nothing Changes v7: Modified licensing text to GPLv2 Changes v6: Added new line character at the end of line of dev_err() Changes v5: Move sky81452-backlight.h to include/linux/platform_data Changes v4: Removed MODULE_VERSION() Modified license to GPLv2 Changes v3: Fixed the backlight name from 'sky81452-bl' to 'sky81452-backlight' Assigned mfd_cell.of_compatible for binding device node Modified error messages Changes v2: Renamed CONFIG_SKY81452 to CONFIG_MFD_SKY81452 Changed the dependency from I2C=y to I2C, for CONFIG_MFD_SKY81452 Added message for exception or errors drivers/mfd/Kconfig | 12 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/sky81452.c | 108 +++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/sky81452.h | 31 +++++++++++++ 4 files changed, 152 insertions(+) create mode 100644 drivers/mfd/sky81452.c create mode 100644 include/linux/mfd/sky81452.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 1456ea7..a54244c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -693,6 +693,18 @@ config MFD_SM501_GPIO lines on the SM501. The platform data is used to supply the base number for the first GPIO line to register. +config MFD_SKY81452 + tristate "Skyworks Solutions SKY81452" + select MFD_CORE + select REGMAP_I2C + depends on I2C + help + This is the core driver for the Skyworks SKY81452 backlight and + voltage regulator device. + + This driver can also be built as a module. If so, the module + will be called sky81452. + config MFD_SMSC bool "SMSC ECE1099 series chips" depends on I2C=y diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 8bd54b1..d9683ea 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -174,6 +174,7 @@ obj-$(CONFIG_MFD_STW481X) += stw481x.o obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o +obj-$(CONFIG_MFD_SKY81452) += sky81452.o intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o diff --git a/drivers/mfd/sky81452.c b/drivers/mfd/sky81452.c new file mode 100644 index 0000000..b0c9b04 --- /dev/null +++ b/drivers/mfd/sky81452.c @@ -0,0 +1,108 @@ +/* + * sky81452.c SKY81452 MFD driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct regmap_config sky81452_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int sky81452_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + const struct sky81452_platform_data *pdata = dev_get_platdata(dev); + struct mfd_cell cells[2]; + struct regmap *regmap; + int ret; + + if (!pdata) { + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + } + + regmap = devm_regmap_init_i2c(client, &sky81452_config); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + i2c_set_clientdata(client, regmap); + + memset(cells, 0, sizeof(cells)); + cells[0].name = "sky81452-backlight"; + cells[0].of_compatible = "skyworks,sky81452-backlight"; + cells[0].platform_data = pdata->bl_pdata; + cells[0].pdata_size = sizeof(*pdata->bl_pdata); + cells[1].name = "sky81452-regulator"; + cells[1].platform_data = pdata->regulator_init_data; + cells[1].pdata_size = sizeof(*pdata->regulator_init_data); + + ret = mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells), NULL, 0, NULL); + if (ret) + dev_err(dev, "failed to add child devices. err=%d\n", ret); + + return ret; +} + +static int sky81452_remove(struct i2c_client *client) +{ + mfd_remove_devices(&client->dev); + return 0; +} + +static const struct i2c_device_id sky81452_ids[] = { + { "sky81452" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, sky81452_ids); + +#ifdef CONFIG_OF +static const struct of_device_id sky81452_of_match[] = { + { .compatible = "skyworks,sky81452", }, + { } +}; +MODULE_DEVICE_TABLE(of, sky81452_of_match); +#endif + +static struct i2c_driver sky81452_driver = { + .driver = { + .name = "sky81452", + .of_match_table = of_match_ptr(sky81452_of_match), + }, + .probe = sky81452_probe, + .remove = sky81452_remove, + .id_table = sky81452_ids, +}; + +module_i2c_driver(sky81452_driver); + +MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver"); +MODULE_AUTHOR("Gyungoh Yoo "); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/sky81452.h b/include/linux/mfd/sky81452.h new file mode 100644 index 0000000..b0925fa --- /dev/null +++ b/include/linux/mfd/sky81452.h @@ -0,0 +1,31 @@ +/* + * sky81452.h SKY81452 MFD driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#ifndef _SKY81452_H +#define _SKY81452_H + +#include +#include + +struct sky81452_platform_data { + struct sky81452_bl_platform_data *bl_pdata; + struct regulator_init_data *regulator_init_data; +}; + +#endif -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: gyungoh@gmail.com Date: Thu, 18 Dec 2014 05:47:46 +0000 Subject: [PATCH v10 1/6] mfd: Add support for Skyworks SKY81452 driver Message-Id: <1418881671-3495-2-git-send-email-jack.yoo@skyworksinc.com> List-Id: References: <1418881671-3495-1-git-send-email-jack.yoo@skyworksinc.com> In-Reply-To: <1418881671-3495-1-git-send-email-jack.yoo-tjhQNA90jdKqndwCJWfcng@public.gmane.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: sameo-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, jg1.han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, cooloney-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, trivial-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org, ktsai-GubuWUlQtMwciDkP5Hr2oA@public.gmane.org, hs-ynQEQJNshbs@public.gmane.org, stwiss.opensource-WBD+wuPFNBhBDgjK7y7TUQ@public.gmane.org, matti.vaittinen-OYasijW0DpE@public.gmane.org, broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org, heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, shawn.guo-KZfg59tc24xl57MIdRCFDg@public.gmane.org, florian.vaussard-p8DiymsW2f8@public.gmane.org, andrew-g2DYL2Zd6BY@public.gmane.org, antonynpavlov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, hytszk-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, plagnioj-sclMFOaUSTBWk0Htik3J/w@public.gmane.org, tomi.valkeinen-l0cyMroinI0@public.gmane.org, jack.yoo-tjhQNA90jdKqndwCJWfcng@public.gmane.org, linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org From: Gyungoh Yoo Signed-off-by: Gyungoh Yoo Acked-by: Lee Jones --- Changes v10: Nothing Changes v9: Nothing Changes v8: Nothing Changes v7: Modified licensing text to GPLv2 Changes v6: Added new line character at the end of line of dev_err() Changes v5: Move sky81452-backlight.h to include/linux/platform_data Changes v4: Removed MODULE_VERSION() Modified license to GPLv2 Changes v3: Fixed the backlight name from 'sky81452-bl' to 'sky81452-backlight' Assigned mfd_cell.of_compatible for binding device node Modified error messages Changes v2: Renamed CONFIG_SKY81452 to CONFIG_MFD_SKY81452 Changed the dependency from I2C=y to I2C, for CONFIG_MFD_SKY81452 Added message for exception or errors drivers/mfd/Kconfig | 12 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/sky81452.c | 108 +++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/sky81452.h | 31 +++++++++++++ 4 files changed, 152 insertions(+) create mode 100644 drivers/mfd/sky81452.c create mode 100644 include/linux/mfd/sky81452.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 1456ea7..a54244c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -693,6 +693,18 @@ config MFD_SM501_GPIO lines on the SM501. The platform data is used to supply the base number for the first GPIO line to register. +config MFD_SKY81452 + tristate "Skyworks Solutions SKY81452" + select MFD_CORE + select REGMAP_I2C + depends on I2C + help + This is the core driver for the Skyworks SKY81452 backlight and + voltage regulator device. + + This driver can also be built as a module. If so, the module + will be called sky81452. + config MFD_SMSC bool "SMSC ECE1099 series chips" depends on I2C=y diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 8bd54b1..d9683ea 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -174,6 +174,7 @@ obj-$(CONFIG_MFD_STW481X) += stw481x.o obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o +obj-$(CONFIG_MFD_SKY81452) += sky81452.o intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o diff --git a/drivers/mfd/sky81452.c b/drivers/mfd/sky81452.c new file mode 100644 index 0000000..b0c9b04 --- /dev/null +++ b/drivers/mfd/sky81452.c @@ -0,0 +1,108 @@ +/* + * sky81452.c SKY81452 MFD driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct regmap_config sky81452_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int sky81452_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + const struct sky81452_platform_data *pdata = dev_get_platdata(dev); + struct mfd_cell cells[2]; + struct regmap *regmap; + int ret; + + if (!pdata) { + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + } + + regmap = devm_regmap_init_i2c(client, &sky81452_config); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + i2c_set_clientdata(client, regmap); + + memset(cells, 0, sizeof(cells)); + cells[0].name = "sky81452-backlight"; + cells[0].of_compatible = "skyworks,sky81452-backlight"; + cells[0].platform_data = pdata->bl_pdata; + cells[0].pdata_size = sizeof(*pdata->bl_pdata); + cells[1].name = "sky81452-regulator"; + cells[1].platform_data = pdata->regulator_init_data; + cells[1].pdata_size = sizeof(*pdata->regulator_init_data); + + ret = mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells), NULL, 0, NULL); + if (ret) + dev_err(dev, "failed to add child devices. err=%d\n", ret); + + return ret; +} + +static int sky81452_remove(struct i2c_client *client) +{ + mfd_remove_devices(&client->dev); + return 0; +} + +static const struct i2c_device_id sky81452_ids[] = { + { "sky81452" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, sky81452_ids); + +#ifdef CONFIG_OF +static const struct of_device_id sky81452_of_match[] = { + { .compatible = "skyworks,sky81452", }, + { } +}; +MODULE_DEVICE_TABLE(of, sky81452_of_match); +#endif + +static struct i2c_driver sky81452_driver = { + .driver = { + .name = "sky81452", + .of_match_table = of_match_ptr(sky81452_of_match), + }, + .probe = sky81452_probe, + .remove = sky81452_remove, + .id_table = sky81452_ids, +}; + +module_i2c_driver(sky81452_driver); + +MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver"); +MODULE_AUTHOR("Gyungoh Yoo "); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/sky81452.h b/include/linux/mfd/sky81452.h new file mode 100644 index 0000000..b0925fa --- /dev/null +++ b/include/linux/mfd/sky81452.h @@ -0,0 +1,31 @@ +/* + * sky81452.h SKY81452 MFD driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#ifndef _SKY81452_H +#define _SKY81452_H + +#include +#include + +struct sky81452_platform_data { + struct sky81452_bl_platform_data *bl_pdata; + struct regulator_init_data *regulator_init_data; +}; + +#endif -- 1.9.1