MIME-Version: 1.0
In-Reply-To: <CAEnQRZAoJtd_X+OXNkiEKgmSBpU=t-pMu8cpGZDFuTJhZEAxRg@mail.gmail.com>
References: <1429095726-10055-1-git-send-email-daniel.baluta@intel.com>
	<1429095726-10055-2-git-send-email-daniel.baluta@intel.com>
	<5533AD90.8010507@kernel.org>
	<CAEnQRZAoJtd_X+OXNkiEKgmSBpU=t-pMu8cpGZDFuTJhZEAxRg@mail.gmail.com>
Date: Fri, 24 Apr 2015 19:14:58 +0300
Message-ID: <CAEnQRZDJNvNUkqHcU8Vu7v_+gP9WXmNN-wX35eGTTn=5DRyxyA@mail.gmail.com>
Subject: Re: [PATCH 1/3] iio: magnetometer: Add support for MEMSIC MMC35240 sensor
From: Daniel Baluta <daniel.baluta@intel.com>
To: Daniel Baluta <daniel.baluta@intel.com>
Cc: Jonathan Cameron <jic23@kernel.org>, Hartmut Knaack <knaack.h@gmx.de>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Peter Meerwald <pmeerw@pmeerw.net>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "linux-iio@vger.kernel.org" <linux-iio@vger.kernel.org>
Content-Type: text/plain; charset=UTF-8
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 19217
Lines: 564

On Fri, Apr 24, 2015 at 7:00 PM, Daniel Baluta <daniel.baluta@intel.com> wrote:
> On Sun, Apr 19, 2015 at 4:28 PM, Jonathan Cameron <jic23@kernel.org> wrote:
>> On 15/04/15 12:02, Daniel Baluta wrote:
>>> Minimal implementation for MMC35240 3-axis magnetometer
>>> sensor. It provides processed readings and possiblity to change
>>> the sampling frequency.
>>>
>>> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
>> a couple of really minor points inline.
>>
>> Looks good to me.
>
> Thanks. Fixed most of the issues and sent v2.  See below.
>
>>
>> Jonathan
>>> ---
>>>  drivers/iio/magnetometer/Kconfig    |  11 +
>>>  drivers/iio/magnetometer/Makefile   |   1 +
>>>  drivers/iio/magnetometer/mmc35240.c | 476 ++++++++++++++++++++++++++++++++++++
>>>  3 files changed, 488 insertions(+)
>>>  create mode 100644 drivers/iio/magnetometer/mmc35240.c
>>>
>>> diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig
>>> index a5d6de7..7aba685 100644
>>> --- a/drivers/iio/magnetometer/Kconfig
>>> +++ b/drivers/iio/magnetometer/Kconfig
>>> @@ -47,6 +47,17 @@ config HID_SENSOR_MAGNETOMETER_3D
>>>         Say yes here to build support for the HID SENSOR
>>>         Magnetometer 3D.
>>>
>>> +config MMC35240
>>> +     tristate "MEMSIC MMC35240 3-axis magnetic sensor"
>>> +     select REGMAP_I2C
>>> +     depends on I2C
>>> +     help
>>> +       Say yes here to build support for the MEMSIC MMC35240 3-axis
>>> +       magnetic sensor.
>>> +
>>> +       To compile this driver as a module, choose M here: the module
>>> +       will be called mmc35240.
>>> +
>>>  config IIO_ST_MAGN_3AXIS
>>>       tristate "STMicroelectronics magnetometers 3-Axis Driver"
>>>       depends on (I2C || SPI_MASTER) && SYSFS
>>> diff --git a/drivers/iio/magnetometer/Makefile b/drivers/iio/magnetometer/Makefile
>>> index 0f5d3c9..696a429 100644
>>> --- a/drivers/iio/magnetometer/Makefile
>>> +++ b/drivers/iio/magnetometer/Makefile
>>> @@ -6,6 +6,7 @@
>>>  obj-$(CONFIG_AK8975) += ak8975.o
>>>  obj-$(CONFIG_MAG3110)        += mag3110.o
>>>  obj-$(CONFIG_HID_SENSOR_MAGNETOMETER_3D) += hid-sensor-magn-3d.o
>>> +obj-$(CONFIG_MMC35240)       += mmc35240.o
>>>
>>>  obj-$(CONFIG_IIO_ST_MAGN_3AXIS) += st_magn.o
>>>  st_magn-y := st_magn_core.o
>>> diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c
>>> new file mode 100644
>>> index 0000000..c46c1f7
>>> --- /dev/null
>>> +++ b/drivers/iio/magnetometer/mmc35240.c
>>> @@ -0,0 +1,476 @@
>>> +/*
>>> + * MMC35240 - MEMSIC 3-axis Magnetic Sensor
>>> + *
>>> + * Copyright (c) 2015, Intel Corporation.
>>> + *
>>> + * This file is subject to the terms and conditions of version 2 of
>>> + * the GNU General Public License.  See the file COPYING in the main
>>> + * directory of this archive for more details.
>>> + *
>>> + * IIO driver for MMC35240 (7-bit I2C slave address 0x30).
>>> + *
>>> + * TODO: offset, ACPI, continuous measurement mode, PM
>>> + */
>>> +
>>> +#include <linux/module.h>
>>> +#include <linux/init.h>
>>> +#include <linux/i2c.h>
>>> +#include <linux/delay.h>
>>> +#include <linux/regmap.h>
>>> +
>>> +#include <linux/iio/iio.h>
>>> +#include <linux/iio/sysfs.h>
>>> +
>>> +#define MMC35240_DRV_NAME "mmc35240"
>>> +#define MMC35240_REGMAP_NAME "mmc35240_regmap"
>>> +
>>> +#define MMC35240_REG_XOUT_L  0x00
>>> +#define MMC35240_REG_XOUT_H  0x01
>>> +#define MMC35240_REG_YOUT_L  0x02
>>> +#define MMC35240_REG_YOUT_H  0x03
>>> +#define MMC35240_REG_ZOUT_L  0x04
>>> +#define MMC35240_REG_ZOUT_H  0x05
>>> +
>>> +#define MMC35240_REG_STATUS  0x06
>>> +#define MMC35240_REG_CTRL0   0x07
>>> +#define MMC35240_REG_CTRL1   0x08
>>> +
>>> +#define MMC35240_REG_ID              0x20
>>> +
>>> +#define MMC35240_STATUS_MEAS_DONE_BIT        BIT(0)
>>> +
>>> +#define MMC35240_CTRL0_REFILL_BIT    BIT(7)
>>> +#define MMC35240_CTRL0_RESET_BIT     BIT(6)
>>> +#define MMC35240_CTRL0_SET_BIT               BIT(5)
>>> +#define MMC35240_CTRL0_CMM_BIT               BIT(1)
>>> +#define MMC35240_CTRL0_TM_BIT                BIT(0)
>>> +
>>> +/* output resolution bits */
>>> +#define MMC35240_CTRL1_BW0_BIT               BIT(0)
>>> +#define MMC35240_CTRL1_BW1_BIT               BIT(1)
>>> +
>>> +#define MMC35240_CTRL1_BW_MASK        (MMC35240_CTRL1_BW0_BIT | \
>>> +              MMC35240_CTRL1_BW1_BIT)
>>> +#define MMC35240_CTRL1_BW_SHIFT              0
>>> +
>>> +#define MMC35240_WAIT_CHARGE_PUMP    50000   /* us */
>>> +#define MMC53240_WAIT_SET_RESET              1000    /* us */
>>> +
>>> +enum mmc35240_resolution {
>>> +     MMC35240_16_BITS_SLOW = 0, /* 100 Hz */
>>> +     MMC35240_16_BITS_FAST,     /* 200 Hz */
>>> +     MMC35240_14_BITS,          /* 333 Hz */
>>> +     MMC35240_12_BITS,          /* 666 Hz */
>>> +     MMC35240_MAX_BITS /* this must be last */
>>> +};
>>> +
>>> +enum mmc35240_axis {
>>> +     AXIS_X = 0,
>>> +     AXIS_Y,
>>> +     AXIS_Z,
>>> +};
>>> +
>>> +static const struct {
>>> +     int sens[3]; /* sensitivity per X, Y, Z axis */
>>> +     int nfo; /* null field output */
>>> +} mmc35240_props_table[] = {
>>> +     /* 16 bits, 100Hz ODR */
>>> +     {
>>> +             {1024, 1024, 770},
>>> +             32768,
>>> +     },
>>> +     /* 16 bits, 200Hz ODR */
>>> +     {
>>> +             {1024, 1024, 770},
>>> +             32768,
>>> +     },
>>> +     /* 14 bits, 333Hz ODR */
>>> +     {
>>> +             {256, 256, 193},
>>> +             8192,
>>> +     },
>>> +     /* 12 bits, 666Hz ODR */
>>> +     {
>>> +             {64, 64, 48},
>>> +             2048,
>>> +     },
>>> +};
>>> +
>>> +struct mmc35240_data {
>>> +     struct i2c_client *client;
>>> +     struct mutex mutex;
>>> +     struct regmap *regmap;
>>> +     enum mmc35240_resolution res;
>>> +};
>>> +
>>> +int mmc35240_samp_freq[] = {100, 200, 333, 666};
>>> +
>>> +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 333 666");
>>> +
>>> +#define MMC35240_CHANNEL(_axis) { \
>>> +     .type = IIO_MAGN, \
>>> +     .modified = 1, \
>>> +     .channel2 = IIO_MOD_ ## _axis, \
>>> +     .address = AXIS_ ## _axis, \
>>> +     .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \
>>> +     .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
>>> +}
>>> +
>>> +static const struct iio_chan_spec mmc35240_channels[] = {
>>> +     MMC35240_CHANNEL(X),
>>> +     MMC35240_CHANNEL(Y),
>>> +     MMC35240_CHANNEL(Z),
>>> +};
>>> +
>>> +static struct attribute *mmc35240_attributes[] = {
>>> +     &iio_const_attr_sampling_frequency_available.dev_attr.attr,
>>> +};
>>> +
>>> +static const struct attribute_group mmc35240_attribute_group = {
>>> +     .attrs = mmc35240_attributes,
>>> +};
>>> +
>>> +static int mmc35240_get_samp_freq_index(struct mmc35240_data *data,
>>> +                                     int val, int val2)
>>> +{
>>> +     int i;
>>> +
>>> +     for (i = 0; i < ARRAY_SIZE(mmc35240_samp_freq); i++)
>>> +             if (mmc35240_samp_freq[i] == val)
>>> +                     return i;
>>> +     return -EINVAL;
>>> +}
>>> +
>>> +static int mmc35240_hw_set(struct mmc35240_data *data, bool set)
>>> +{
>>> +     int ret;
>>> +     u8 coil_bit;
>>> +
>>> +     /*
>>> +      * Recharge the capacitor at VCAP pin, requested to be issued
>>> +      * before a SET/RESET command.
>>> +      */
>>> +     ret = regmap_update_bits(data->regmap, MMC35240_REG_CTRL0,
>>> +                              MMC35240_CTRL0_REFILL_BIT,
>>> +                              MMC35240_CTRL0_REFILL_BIT);
>>> +     if (ret < 0)
>>> +             return ret;
>>> +     usleep_range(MMC35240_WAIT_CHARGE_PUMP, MMC35240_WAIT_CHARGE_PUMP + 1);
>>> +
>>> +     if (set)
>>> +             coil_bit = MMC35240_CTRL0_SET_BIT;
>>> +     else
>>> +             coil_bit = MMC35240_CTRL0_RESET_BIT;
>>> +
>>> +     return regmap_update_bits(data->regmap, MMC35240_REG_CTRL0,
>>> +                               MMC35240_CTRL0_REFILL_BIT,
>>> +                               coil_bit);
>>> +}
>>> +
>>> +static int mmc35240_init(struct mmc35240_data *data)
>>> +{
>>> +     int ret;
>>> +     unsigned int reg_id;
>>> +
>>> +     ret = regmap_read(data->regmap, MMC35240_REG_ID, &reg_id);
>>> +     if (ret < 0) {
>>> +             dev_err(&data->client->dev, "Error reading product id\n");
>>> +             return ret;
>>> +     }
>>> +
>>> +     dev_info(&data->client->dev, "MMC35240 chip id %x\n", reg_id);
>>> +
>>> +     /*
>>> +      * make sure we restore sensor characteristics, by doing
>>> +      * a RESET/SET sequence
>>> +      */
>>> +     ret = mmc35240_hw_set(data, false);
>>> +     if (ret < 0)
>>> +             return ret;
>>> +     usleep_range(MMC53240_WAIT_SET_RESET, MMC53240_WAIT_SET_RESET + 1);
>>> +
>>> +     ret = mmc35240_hw_set(data, true);
>>> +     if (ret < 0)
>>> +             return ret;
>>> +
>>> +     /* set default sampling frequency */
>>> +     return regmap_update_bits(data->regmap, MMC35240_REG_CTRL1,
>>> +                               MMC35240_CTRL1_BW_MASK,
>>> +                               data->res << MMC35240_CTRL1_BW_SHIFT);
>>> +}
>>> +
>>> +static int mmc35240_take_measurement(struct mmc35240_data *data)
>>> +{
>>> +     int ret, tries = 100;
>>> +     unsigned int reg_status;
>>> +
>>> +     ret = regmap_write(data->regmap, MMC35240_REG_CTRL0,
>>> +                        MMC35240_CTRL0_TM_BIT);
>>> +     if (ret < 0)
>>> +             return ret;
>>> +
>>> +     while (tries-- > 0) {
>>> +             ret = regmap_read(data->regmap, MMC35240_REG_STATUS,
>>> +                               &reg_status);
>>> +             if (ret < 0)
>>> +                     return ret;
>>> +             if (reg_status & MMC35240_STATUS_MEAS_DONE_BIT)
>>> +                     break;
>>> +             msleep(20);
>>> +     }
>>> +
>>> +     if (tries < 0) {
>>> +             dev_err(&data->client->dev, "data not ready\n");
>>> +             return -EIO;
>>> +     }
>>> +
>>> +     return 0;
>>> +}
>>> +
>>> +static int mmc35240_read_measurement(struct mmc35240_data *data, __le16 buf[3])
>>> +{
>>> +     int ret;
>>> +
>> Why this seperation into read_measurement and take_measurement?
>
> We need this for future implementation of Continuous Mode, where there
> is no need
> to call take_measurement.

Also the same pattern is in LTR501 driver and I think it looks nicer.
>
>>> +     ret = mmc35240_take_measurement(data);
>>> +     if (ret < 0)
>>> +             return ret;
>>> +
>>> +     return regmap_bulk_read(data->regmap, MMC35240_REG_XOUT_L, (u8 *)buf,
>>> +                             3 * sizeof(__be16));
>>> +}
>>> +
>>> +int mmc35240_raw_to_gauss(struct mmc35240_data *data, int index, __le16 buf[],
>>> +                       int *val, int *val2)
>>> +{
>>> +     int raw_x, raw_y, raw_z;
>>> +     int sens_x, sens_y, sens_z;
>>> +     int nfo;
>>> +
>>> +     raw_x = le16_to_cpu(buf[AXIS_X]);
>>> +     raw_y = le16_to_cpu(buf[AXIS_Y]);
>>> +     raw_z = le16_to_cpu(buf[AXIS_Z]);
>>> +
>>> +     sens_x = mmc35240_props_table[data->res].sens[AXIS_X];
>>> +     sens_y = mmc35240_props_table[data->res].sens[AXIS_Y];
>>> +     sens_z = mmc35240_props_table[data->res].sens[AXIS_Z];
>>> +
>>> +     nfo = mmc35240_props_table[data->res].nfo;
>>> +
>>> +     switch (index) {
>>> +     case AXIS_X:
>>> +             *val = (raw_x - nfo) / sens_x;
>>> +             *val2 = ((raw_x - nfo) % sens_x) * 1000000;
>>> +             break;
>>> +     case AXIS_Y:
>>> +             *val = (raw_y - nfo) / sens_y - (raw_z - nfo) / sens_z;
>>> +             *val2 = (((raw_y - nfo) % sens_y - (raw_z - nfo) % sens_z))
>>> +                     * 1000000;
>>> +             break;
>>> +     case AXIS_Z:
>>> +             *val = (raw_y - nfo) / sens_y + (raw_z - nfo) / sens_z;
>>> +             *val2 = (((raw_y - nfo) % sens_y + (raw_z - nfo) % sens_z))
>>> +                     * 1000000;
>>> +             break;
>>> +     default:
>>> +             return -EINVAL;
>>> +     }
>>> +     return 0;
>>> +}
>>> +
>>> +static int mmc35240_read_raw(struct iio_dev *indio_dev,
>>> +                          struct iio_chan_spec const *chan, int *val,
>>> +                          int *val2, long mask)
>>> +{
>>> +     struct mmc35240_data *data = iio_priv(indio_dev);
>>> +     int ret, i;
>>> +     unsigned int reg;
>>> +     __le16 buf[3];
>>> +
>>> +     switch (mask) {
>>> +     case IIO_CHAN_INFO_PROCESSED:
>>> +             mutex_lock(&data->mutex);
>>> +             ret = mmc35240_read_measurement(data, buf);
>>> +             mutex_unlock(&data->mutex);
>>> +             if (ret < 0)
>>> +                     return ret;
>>> +             ret = mmc35240_raw_to_gauss(data, chan->address,
>>> +                                         buf, val, val2);
>>> +             if (ret < 0)
>>> +                     return ret;
>>> +             return IIO_VAL_INT_PLUS_MICRO;
>>> +     case IIO_CHAN_INFO_SAMP_FREQ:
>>> +             mutex_lock(&data->mutex);
>>> +             ret = regmap_read(data->regmap, MMC35240_REG_CTRL1, &reg);
>>> +             mutex_unlock(&data->mutex);
>>> +             if (ret < 0)
>>> +                     return ret;
>>> +
>>> +             i = (reg & MMC35240_CTRL1_BW_MASK) >> MMC35240_CTRL1_BW_SHIFT;
>>> +             if (i < 0 || i > ARRAY_SIZE(mmc35240_samp_freq))
>>> +                     return -EINVAL;
>>> +
>>> +             *val = mmc35240_samp_freq[i];
>>> +             *val2 = 0;
>>> +             return IIO_VAL_INT_PLUS_MICRO;
>>> +     default:
>>> +             return -EINVAL;
>>> +     }
>>> +}
>>> +
>>> +static int mmc35240_write_raw(struct iio_dev *indio_dev,
>>> +                           struct iio_chan_spec const *chan, int val,
>>> +                           int val2, long mask)
>>> +{
>>> +     struct mmc35240_data *data = iio_priv(indio_dev);
>>> +     int i, ret;
>>> +
>>> +     switch (mask) {
>>> +     case IIO_CHAN_INFO_SAMP_FREQ:
>>> +             i = mmc35240_get_samp_freq_index(data, val, val2);
>>> +             if (i < 0)
>>> +                     return -EINVAL;
>>> +             mutex_lock(&data->mutex);
>>> +             ret = regmap_update_bits(data->regmap, MMC35240_REG_CTRL1,
>>> +                                      MMC35240_CTRL1_BW_MASK,
>>> +                                      i << MMC35240_CTRL1_BW_SHIFT);
>>> +             mutex_unlock(&data->mutex);
>>> +             return ret;
>>> +     default:
>>> +             return -EINVAL;
>>> +     }
>>> +}
>>> +
>>> +static const struct iio_info mmc35240_info = {
>>> +     .driver_module  = THIS_MODULE,
>>> +     .read_raw       = mmc35240_read_raw,
>>> +     .write_raw      = mmc35240_write_raw,
>>> +     .attrs          = &mmc35240_attribute_group,
>>> +};
>>> +
>>> +static bool mmc35240_is_writeable_reg(struct device *dev, unsigned int reg)
>>> +{
>>> +     switch (reg) {
>>> +     case MMC35240_REG_CTRL0:
>>> +     case MMC35240_REG_CTRL1:
>>> +             return true;
>>> +     default:
>>> +             return false;
>>> +     }
>>> +}
>>> +
>>> +static bool mmc35240_is_readable_reg(struct device *dev, unsigned int reg)
>>> +{
>>> +     switch (reg) {
>>> +     case MMC35240_REG_XOUT_L:
>>> +     case MMC35240_REG_XOUT_H:
>>> +     case MMC35240_REG_YOUT_L:
>>> +     case MMC35240_REG_YOUT_H:
>>> +     case MMC35240_REG_ZOUT_L:
>>> +     case MMC35240_REG_ZOUT_H:
>>> +     case MMC35240_REG_STATUS:
>>> +     case MMC35240_REG_ID:
>>> +             return true;
>>> +     default:
>>> +             return false;
>>> +     }
>>> +}
>>> +
>>> +static bool mmc35240_is_volatile_reg(struct device *dev, unsigned int reg)
>>> +{
>>> +     switch (reg) {
>>> +     case MMC35240_REG_CTRL0:
>>> +     case MMC35240_REG_CTRL1:
>>> +             return false;
>>> +     default:
>>> +             return true;
>>> +     }
>>> +}
>>> +
>>> +static struct reg_default mmc35240_reg_defaults[] = {
>>> +     { MMC35240_REG_CTRL0,  0x00 },
>>> +     { MMC35240_REG_CTRL1,  0x00 },
>>> +};
>>> +
>>> +static const struct regmap_config mmc35240_regmap_config = {
>>> +     .name = MMC35240_REGMAP_NAME,
>>> +
>>> +     .reg_bits = 8,
>>> +     .val_bits = 8,
>>> +
>>> +     .max_register = MMC35240_REG_ID,
>>> +     .cache_type = REGCACHE_FLAT,
>>> +
>>> +     .writeable_reg = mmc35240_is_writeable_reg,
>>> +     .readable_reg = mmc35240_is_readable_reg,
>>> +     .volatile_reg = mmc35240_is_volatile_reg,
>>> +
>>> +     .reg_defaults = mmc35240_reg_defaults,
>>> +     .num_reg_defaults = ARRAY_SIZE(mmc35240_reg_defaults),
>>> +};
>>> +
>>> +static int mmc35240_probe(struct i2c_client *client,
>>> +                       const struct i2c_device_id *id)
>>> +{
>>> +     struct mmc35240_data *data;
>>> +     struct iio_dev *indio_dev;
>>> +     struct regmap *regmap;
>>> +     int ret;
>>> +
>>> +     indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
>>> +     if (!indio_dev)
>>> +             return -ENOMEM;
>>> +
>>> +     regmap = devm_regmap_init_i2c(client, &mmc35240_regmap_config);
>>> +     if (IS_ERR(regmap)) {
>>> +             dev_err(&client->dev, "regmap initialization failed\n");
>>> +             return PTR_ERR(regmap);
>>> +     }
>>> +
>>> +     data = iio_priv(indio_dev);
>>> +     i2c_set_clientdata(client, indio_dev);
>> If you are dropping the remove, you don't actually need the above either.
>
> All right. Fixed.
>
>>
>>> +     data->client = client;
>>> +     data->regmap = regmap;
>>> +     data->res = MMC35240_16_BITS_SLOW;
>>> +
>>> +     mutex_init(&data->mutex);
>>> +
>>> +     indio_dev->dev.parent = &client->dev;
>>> +     indio_dev->info = &mmc35240_info;
>>> +     indio_dev->name = MMC35240_DRV_NAME;
>>> +     indio_dev->channels = mmc35240_channels;
>>> +     indio_dev->num_channels = ARRAY_SIZE(mmc35240_channels);
>>> +     indio_dev->modes = INDIO_DIRECT_MODE;
>>> +
>>> +     ret = mmc35240_init(data);
>>> +     if (ret < 0) {
>>> +             dev_err(&client->dev, "mmc35240 chip init failed\n");
>>> +             return ret;
>>> +     }
>>> +     return devm_iio_device_register(&client->dev, indio_dev);
>>> +}
>>> +
>>> +static int mmc35240_remove(struct i2c_client *client)
>>> +{
>>> +     return 0;
>>> +}
>>> +
>>> +static const struct i2c_device_id mmc35240_id[] = {
>>> +     {"MMC35240", 0},
>>> +     {}
>>> +};
>>> +MODULE_DEVICE_TABLE(i2c, mmc35240_id);
>>> +
>>> +static struct i2c_driver mmc35240_driver = {
>>> +     .driver = {
>>> +             .name = MMC35240_DRV_NAME,
>>> +     },
>>> +     .probe          = mmc35240_probe,
>>> +     .remove         = mmc35240_remove,
>>> +     .id_table       = mmc35240_id,
>>> +};
>>> +
>>> +module_i2c_driver(mmc35240_driver);
>>> +
>>> +MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
>>> +MODULE_DESCRIPTION("MEMSIC MMC35240 magnetic sensor driver");
>>> +MODULE_LICENSE("GPL v2");
>>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at  http://www.tux.org/lkml/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/