Signed-off-by: Gyungoh Yoo <jack.yoo@xxxxxxxxxxxxxxx> --- Documentation/devicetree/bindings/mfd/sky81452.txt | 24 +++++ .../devicetree/bindings/vendor-prefixes.txt | 1 + drivers/mfd/Kconfig | 12 +++ drivers/mfd/Makefile | 1 + drivers/mfd/sky81452.c | 113 +++++++++++++++++++++ include/linux/mfd/sky81452.h | 32 ++++++ 6 files changed, 183 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/sky81452.txt create mode 100644 drivers/mfd/sky81452.c create mode 100644 include/linux/mfd/sky81452.h diff --git a/Documentation/devicetree/bindings/mfd/sky81452.txt b/Documentation/devicetree/bindings/mfd/sky81452.txt new file mode 100644 index 0000000..5fb0b4f --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/sky81452.txt @@ -0,0 +1,24 @@ +SKY81452 bindings + +Required properties: +- compatible : Must be "skyworks,sky81452" + +Required child nodes: +- backlight : container node for backlight following the binding + in video/backlight/sky81452-backlight.txt +- regulator : container node for regulators following the binding + in regulator/sky81452-regulator.txt + +Example: + + sky81452@2C { + compatible = "skyworks,sky81452"; + + backlight { + ... + }; + + regulator { + ... + }; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index d415b38..ce76e10 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -122,6 +122,7 @@ silabs Silicon Laboratories simtek sii Seiko Instruments, Inc. sirf SiRF Technology, Inc. +skyworks Skyworks Solutions, Inc. smsc Standard Microsystems Corporation snps Synopsys, Inc. spansion Spansion Inc. diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index de5abf2..acfb2e5 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -626,6 +626,18 @@ 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 SKY81452 + tristate "Skyworks Solutions SKY81452" + select MFD_CORE + select REGMAP_I2C + depends on I2C=y + 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 f001487..191c656 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -169,6 +169,7 @@ obj-$(CONFIG_MFD_AS3711) += as3711.o obj-$(CONFIG_MFD_AS3722) += as3722.o obj-$(CONFIG_MFD_STW481X) += stw481x.o obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o +obj-$(CONFIG_SKY81452) += sky81452.o intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o obj-$(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..566912f --- /dev/null +++ b/drivers/mfd/sky81452.c @@ -0,0 +1,113 @@ +/* + * sky81452.c SKY81452 MFD driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo <jack.yoo@xxxxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * 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 <http://www.gnu.org/licenses/>. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <linux/mfd/core.h> +#include <linux/mfd/sky81452.h> + +static const struct regmap_config sky81452_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int sky81452_register_devices(struct device *dev, + const struct sky81452_platform_data *pdata) +{ + struct mfd_cell cells[] = { + { + .name = "sky81452-bl", + .platform_data = pdata->bl_pdata, + .pdata_size = sizeof(*pdata->bl_pdata), + }, + { + .name = "sky81452-regulator", + .platform_data = pdata->regulator_init_data, + .pdata_size = sizeof(*pdata->regulator_init_data), + }, + }; + + return mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells), + NULL, 0, NULL); +} + +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 regmap *map; + + if (!pdata) { + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + } + + map = devm_regmap_init_i2c(client, &sky81452_config); + if (IS_ERR(map)) + return PTR_ERR(map); + + i2c_set_clientdata(client, map); + + return sky81452_register_devices(dev, pdata); +} + +static int sky81452_remove(struct i2c_client *client) +{ + mfd_remove_devices(&client->dev); + return 0; +} + +static const struct i2c_device_id sky81452_ids[] = { + { "sky81452", 0 }, + { } +}; +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 <jack.yoo@xxxxxxxxxxxxxxx>"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0"); diff --git a/include/linux/mfd/sky81452.h b/include/linux/mfd/sky81452.h new file mode 100644 index 0000000..8d8ed35 --- /dev/null +++ b/include/linux/mfd/sky81452.h @@ -0,0 +1,32 @@ +/* + * sky81452.h SKY81452 backlight driver + * + * Copyright 2014 Skyworks Solutions Inc. + * Author : Gyungoh Yoo <jack.yoo@xxxxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * 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 <http://www.gnu.org/licenses/>. + */ + +#ifndef _SKY81452_H +#define _SKY81452_H + +#include "linux/sky81452-backlight.h" +#include "linux/regulator/machine.h" + +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@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html