On Fri, 31 Oct 2014, gyungoh@xxxxxxxxx wrote: > From: Gyungoh Yoo <jack.yoo@xxxxxxxxxxxxxxx> > > Signed-off-by: Gyungoh Yoo <jack.yoo@xxxxxxxxxxxxxxx> > --- > 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 | 109 +++++++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/sky81452.h | 32 +++++++++++++ > 4 files changed, 154 insertions(+) > create mode 100644 drivers/mfd/sky81452.c > create mode 100644 include/linux/mfd/sky81452.h Code looks fine, but what are its dependencies. I'm assuming nothing; however, did Mark say that something depends on it? If so, what and what are you going to do about it? > 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..ae1b584 > --- /dev/null > +++ b/drivers/mfd/sky81452.c > @@ -0,0 +1,109 @@ > +/* > + * 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_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 <jack.yoo@xxxxxxxxxxxxxxx>"); > +MODULE_LICENSE("GPL v2"); > diff --git a/include/linux/mfd/sky81452.h b/include/linux/mfd/sky81452.h > new file mode 100644 > index 0000000..9d84872 > --- /dev/null > +++ b/include/linux/mfd/sky81452.h > @@ -0,0 +1,32 @@ > +/* > + * sky81452.h 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/>. > + */ > + > +#ifndef _SKY81452_H > +#define _SKY81452_H > + > +#include <linux/platform_data/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 -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- 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
