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Date: Thu, 4 Sep 2014 10:28:44 +0100
From: Lee Jones <lee.jones@...aro.org>
To: Gyungoh Yoo <gyungoh@...il.com>
Cc: sameo@...ux.intel.com, devicetree@...r.kernel.org,
grant.likely@...aro.org, robh+dt@...nel.org,
linux-kernel@...r.kernel.org,
Gyungoh Yoo <jack.yoo@...worksinc.com>
Subject: Re: [PATCH v2.1 1/7] Adding Skyworks SKY81452 MFD driver
You need a nice commit log here.
> v2.1:
> Clear mfd_cells to zero before setting.
> Added of_compatible into mfd_cells
The changelog should be below the '---' so it doesn't appear in the
commit log.
> ---
> drivers/mfd/Kconfig | 12 +++++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/sky81452.c | 111 +++++++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/sky81452.h | 32 +++++++++++++
> 4 files changed, 156 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 de5abf2..6962b4e 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 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 f001487..6c2f317 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-$(CONFIG_MFD_SKY81452) += sky81452.o
>
> intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o
> obj-$(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..e91b928
> --- /dev/null
> +++ b/drivers/mfd/sky81452.c
> @@ -0,0 +1,111 @@
> +/*
> + * sky81452.c SKY81452 MFD driver
> + *
> + * Copyright 2014 Skyworks Solutions Inc.
> + * Author : Gyungoh Yoo <jack.yoo@...worksinc.com>
> + *
> + * 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 I2C:%d", PTR_ERR(regmap));
Put a space before %d, or else it looks like a dodgy I2C address.
> + return PTR_ERR(regmap);
> + }
> +
> + i2c_set_clientdata(client, regmap);
> +
> + memset(cells, 0, sizeof(cells));
> + cells[0].name = "sky81452-bl";
> + 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].of_compatible = "skyworks,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 (IS_ERR_VALUE(ret))
Just use if (ret).
> + dev_err(dev, "failed to add child device:%d", ret);
s/device/devices
> +
> + 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@...worksinc.com>");
> +MODULE_LICENSE("GPL");
> +MODULE_VERSION("1.1");
> diff --git a/include/linux/mfd/sky81452.h b/include/linux/mfd/sky81452.h
> new file mode 100644
> index 0000000..142f762
> --- /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@...worksinc.com>
> + *
> + * 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
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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