| /* |
| * Freescale MMA9553L Intelligent Pedometer driver |
| * Copyright (c) 2014, Intel Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope 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. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/i2c.h> |
| #include <linux/interrupt.h> |
| #include <linux/slab.h> |
| #include <linux/acpi.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/iio/iio.h> |
| #include <linux/iio/sysfs.h> |
| #include <linux/iio/events.h> |
| #include <linux/pm_runtime.h> |
| #include "mma9551_core.h" |
| |
| #define MMA9553_DRV_NAME "mma9553" |
| #define MMA9553_IRQ_NAME "mma9553_event" |
| #define MMA9553_GPIO_NAME "mma9553_int" |
| |
| /* Pedometer configuration registers (R/W) */ |
| #define MMA9553_REG_CONF_SLEEPMIN 0x00 |
| #define MMA9553_REG_CONF_SLEEPMAX 0x02 |
| #define MMA9553_REG_CONF_SLEEPTHD 0x04 |
| #define MMA9553_MASK_CONF_WORD GENMASK(15, 0) |
| |
| #define MMA9553_REG_CONF_CONF_STEPLEN 0x06 |
| #define MMA9553_MASK_CONF_CONFIG BIT(15) |
| #define MMA9553_MASK_CONF_ACT_DBCNTM BIT(14) |
| #define MMA9553_MASK_CONF_SLP_DBCNTM BIT(13) |
| #define MMA9553_MASK_CONF_STEPLEN GENMASK(7, 0) |
| |
| #define MMA9553_REG_CONF_HEIGHT_WEIGHT 0x08 |
| #define MMA9553_MASK_CONF_HEIGHT GENMASK(15, 8) |
| #define MMA9553_MASK_CONF_WEIGHT GENMASK(7, 0) |
| |
| #define MMA9553_REG_CONF_FILTER 0x0A |
| #define MMA9553_MASK_CONF_FILTSTEP GENMASK(15, 8) |
| #define MMA9553_MASK_CONF_MALE BIT(7) |
| #define MMA9553_MASK_CONF_FILTTIME GENMASK(6, 0) |
| |
| #define MMA9553_REG_CONF_SPEED_STEP 0x0C |
| #define MMA9553_MASK_CONF_SPDPRD GENMASK(15, 8) |
| #define MMA9553_MASK_CONF_STEPCOALESCE GENMASK(7, 0) |
| |
| #define MMA9553_REG_CONF_ACTTHD 0x0E |
| |
| /* Pedometer status registers (R-only) */ |
| #define MMA9553_REG_STATUS 0x00 |
| #define MMA9553_MASK_STATUS_MRGFL BIT(15) |
| #define MMA9553_MASK_STATUS_SUSPCHG BIT(14) |
| #define MMA9553_MASK_STATUS_STEPCHG BIT(13) |
| #define MMA9553_MASK_STATUS_ACTCHG BIT(12) |
| #define MMA9553_MASK_STATUS_SUSP BIT(11) |
| #define MMA9553_MASK_STATUS_ACTIVITY (BIT(10) | BIT(9) | BIT(8)) |
| #define MMA9553_MASK_STATUS_VERSION 0x00FF |
| |
| #define MMA9553_REG_STEPCNT 0x02 |
| #define MMA9553_REG_DISTANCE 0x04 |
| #define MMA9553_REG_SPEED 0x06 |
| #define MMA9553_REG_CALORIES 0x08 |
| #define MMA9553_REG_SLEEPCNT 0x0A |
| |
| /* Pedometer events are always mapped to this pin. */ |
| #define MMA9553_DEFAULT_GPIO_PIN mma9551_gpio6 |
| #define MMA9553_DEFAULT_GPIO_POLARITY 0 |
| |
| #define STATUS_TO_BITNUM(bit) (ffs(bit) - 9) |
| /* Bitnum used for GPIO configuration = bit number in high status byte */ |
| |
| #define MMA9553_DEFAULT_SAMPLE_RATE 30 /* Hz */ |
| |
| /* |
| * The internal activity level must be stable for ACTTHD samples before |
| * ACTIVITY is updated. The ACTIVITY variable contains the current activity |
| * level and is updated every time a step is detected or once a second |
| * if there are no steps. |
| */ |
| #define MMA9553_ACTIVITY_THD_TO_SEC(thd) ((thd) / MMA9553_DEFAULT_SAMPLE_RATE) |
| #define MMA9553_ACTIVITY_SEC_TO_THD(sec) ((sec) * MMA9553_DEFAULT_SAMPLE_RATE) |
| |
| /* |
| * Autonomously suspend pedometer if acceleration vector magnitude |
| * is near 1g (4096 at 0.244 mg/LSB resolution) for 30 seconds. |
| */ |
| #define MMA9553_DEFAULT_SLEEPMIN 3688 /* 0,9 g */ |
| #define MMA9553_DEFAULT_SLEEPMAX 4508 /* 1,1 g */ |
| #define MMA9553_DEFAULT_SLEEPTHD (MMA9553_DEFAULT_SAMPLE_RATE * 30) |
| |
| #define MMA9553_CONFIG_RETRIES 2 |
| |
| /* Status register - activity field */ |
| enum activity_level { |
| ACTIVITY_UNKNOWN, |
| ACTIVITY_REST, |
| ACTIVITY_WALKING, |
| ACTIVITY_JOGGING, |
| ACTIVITY_RUNNING, |
| }; |
| |
| static struct mma9553_event_info { |
| enum iio_chan_type type; |
| enum iio_modifier mod; |
| enum iio_event_direction dir; |
| } mma9553_events_info[] = { |
| { |
| .type = IIO_STEPS, |
| .mod = IIO_NO_MOD, |
| .dir = IIO_EV_DIR_NONE, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_STILL, |
| .dir = IIO_EV_DIR_RISING, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_STILL, |
| .dir = IIO_EV_DIR_FALLING, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_WALKING, |
| .dir = IIO_EV_DIR_RISING, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_WALKING, |
| .dir = IIO_EV_DIR_FALLING, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_JOGGING, |
| .dir = IIO_EV_DIR_RISING, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_JOGGING, |
| .dir = IIO_EV_DIR_FALLING, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_RUNNING, |
| .dir = IIO_EV_DIR_RISING, |
| }, |
| { |
| .type = IIO_ACTIVITY, |
| .mod = IIO_MOD_RUNNING, |
| .dir = IIO_EV_DIR_FALLING, |
| }, |
| }; |
| |
| #define MMA9553_EVENTS_INFO_SIZE ARRAY_SIZE(mma9553_events_info) |
| |
| struct mma9553_event { |
| struct mma9553_event_info *info; |
| bool enabled; |
| }; |
| |
| struct mma9553_conf_regs { |
| u16 sleepmin; |
| u16 sleepmax; |
| u16 sleepthd; |
| u16 config; |
| u16 height_weight; |
| u16 filter; |
| u16 speed_step; |
| u16 actthd; |
| } __packed; |
| |
| struct mma9553_data { |
| struct i2c_client *client; |
| struct mutex mutex; |
| struct mma9553_conf_regs conf; |
| struct mma9553_event events[MMA9553_EVENTS_INFO_SIZE]; |
| int num_events; |
| u8 gpio_bitnum; |
| /* |
| * This is used for all features that depend on step count: |
| * step count, distance, speed, calories. |
| */ |
| bool stepcnt_enabled; |
| u16 stepcnt; |
| u8 activity; |
| s64 timestamp; |
| }; |
| |
| static u8 mma9553_get_bits(u16 val, u16 mask) |
| { |
| return (val & mask) >> (ffs(mask) - 1); |
| } |
| |
| static u16 mma9553_set_bits(u16 current_val, u16 val, u16 mask) |
| { |
| return (current_val & ~mask) | (val << (ffs(mask) - 1)); |
| } |
| |
| static enum iio_modifier mma9553_activity_to_mod(enum activity_level activity) |
| { |
| switch (activity) { |
| case ACTIVITY_RUNNING: |
| return IIO_MOD_RUNNING; |
| case ACTIVITY_JOGGING: |
| return IIO_MOD_JOGGING; |
| case ACTIVITY_WALKING: |
| return IIO_MOD_WALKING; |
| case ACTIVITY_REST: |
| return IIO_MOD_STILL; |
| case ACTIVITY_UNKNOWN: |
| default: |
| return IIO_NO_MOD; |
| } |
| } |
| |
| static void mma9553_init_events(struct mma9553_data *data) |
| { |
| int i; |
| |
| data->num_events = MMA9553_EVENTS_INFO_SIZE; |
| for (i = 0; i < data->num_events; i++) { |
| data->events[i].info = &mma9553_events_info[i]; |
| data->events[i].enabled = false; |
| } |
| } |
| |
| static struct mma9553_event *mma9553_get_event(struct mma9553_data *data, |
| enum iio_chan_type type, |
| enum iio_modifier mod, |
| enum iio_event_direction dir) |
| { |
| int i; |
| |
| for (i = 0; i < data->num_events; i++) |
| if (data->events[i].info->type == type && |
| data->events[i].info->mod == mod && |
| data->events[i].info->dir == dir) |
| return &data->events[i]; |
| |
| return NULL; |
| } |
| |
| static bool mma9553_is_any_event_enabled(struct mma9553_data *data, |
| bool check_type, |
| enum iio_chan_type type) |
| { |
| int i; |
| |
| for (i = 0; i < data->num_events; i++) |
| if ((check_type && data->events[i].info->type == type && |
| data->events[i].enabled) || |
| (!check_type && data->events[i].enabled)) |
| return true; |
| |
| return false; |
| } |
| |
| static int mma9553_set_config(struct mma9553_data *data, u16 reg, |
| u16 *p_reg_val, u16 val, u16 mask) |
| { |
| int ret, retries; |
| u16 reg_val, config; |
| |
| reg_val = *p_reg_val; |
| if (val == mma9553_get_bits(reg_val, mask)) |
| return 0; |
| |
| reg_val = mma9553_set_bits(reg_val, val, mask); |
| ret = mma9551_write_config_word(data->client, MMA9551_APPID_PEDOMETER, |
| reg, reg_val); |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "error writing config register 0x%x\n", reg); |
| return ret; |
| } |
| |
| *p_reg_val = reg_val; |
| |
| /* Reinitializes the pedometer with current configuration values */ |
| config = mma9553_set_bits(data->conf.config, 1, |
| MMA9553_MASK_CONF_CONFIG); |
| |
| ret = mma9551_write_config_word(data->client, MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_CONF_CONF_STEPLEN, config); |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "error writing config register 0x%x\n", |
| MMA9553_REG_CONF_CONF_STEPLEN); |
| return ret; |
| } |
| |
| retries = MMA9553_CONFIG_RETRIES; |
| do { |
| mma9551_sleep(MMA9553_DEFAULT_SAMPLE_RATE); |
| ret = mma9551_read_config_word(data->client, |
| MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_CONF_CONF_STEPLEN, |
| &config); |
| if (ret < 0) |
| return ret; |
| } while (mma9553_get_bits(config, MMA9553_MASK_CONF_CONFIG) && |
| --retries > 0); |
| |
| return 0; |
| } |
| |
| static int mma9553_read_activity_stepcnt(struct mma9553_data *data, |
| u8 *activity, u16 *stepcnt) |
| { |
| u32 status_stepcnt; |
| u16 status; |
| int ret; |
| |
| ret = mma9551_read_status_words(data->client, MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_STATUS, sizeof(u32), |
| (u16 *) &status_stepcnt); |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "error reading status and stepcnt\n"); |
| return ret; |
| } |
| |
| status = status_stepcnt & MMA9553_MASK_CONF_WORD; |
| *activity = mma9553_get_bits(status, MMA9553_MASK_STATUS_ACTIVITY); |
| *stepcnt = status_stepcnt >> 16; |
| |
| return 0; |
| } |
| |
| static int mma9553_conf_gpio(struct mma9553_data *data) |
| { |
| u8 bitnum = 0, appid = MMA9551_APPID_PEDOMETER; |
| int ret; |
| struct mma9553_event *ev_step_detect; |
| bool activity_enabled; |
| |
| activity_enabled = |
| mma9553_is_any_event_enabled(data, true, IIO_ACTIVITY); |
| ev_step_detect = |
| mma9553_get_event(data, IIO_STEPS, IIO_NO_MOD, IIO_EV_DIR_NONE); |
| |
| /* |
| * If both step detector and activity are enabled, use the MRGFL bit. |
| * This bit is the logical OR of the SUSPCHG, STEPCHG, and ACTCHG flags. |
| */ |
| if (activity_enabled && ev_step_detect->enabled) |
| bitnum = STATUS_TO_BITNUM(MMA9553_MASK_STATUS_MRGFL); |
| else if (ev_step_detect->enabled) |
| bitnum = STATUS_TO_BITNUM(MMA9553_MASK_STATUS_STEPCHG); |
| else if (activity_enabled) |
| bitnum = STATUS_TO_BITNUM(MMA9553_MASK_STATUS_ACTCHG); |
| else /* Reset */ |
| appid = MMA9551_APPID_NONE; |
| |
| if (data->gpio_bitnum == bitnum) |
| return 0; |
| |
| /* Save initial values for activity and stepcnt */ |
| if (activity_enabled || ev_step_detect->enabled) { |
| ret = mma9553_read_activity_stepcnt(data, &data->activity, |
| &data->stepcnt); |
| if (ret < 0) |
| return ret; |
| } |
| |
| ret = mma9551_gpio_config(data->client, |
| MMA9553_DEFAULT_GPIO_PIN, |
| appid, bitnum, MMA9553_DEFAULT_GPIO_POLARITY); |
| if (ret < 0) |
| return ret; |
| data->gpio_bitnum = bitnum; |
| |
| return 0; |
| } |
| |
| static int mma9553_init(struct mma9553_data *data) |
| { |
| int ret; |
| |
| ret = mma9551_read_version(data->client); |
| if (ret) |
| return ret; |
| |
| /* |
| * Read all the pedometer configuration registers. This is used as |
| * a device identification command to differentiate the MMA9553L |
| * from the MMA9550L. |
| */ |
| ret = |
| mma9551_read_config_words(data->client, MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_CONF_SLEEPMIN, |
| sizeof(data->conf), (u16 *) &data->conf); |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "failed to read configuration registers\n"); |
| return ret; |
| } |
| |
| |
| data->gpio_bitnum = -1; |
| /* Reset GPIO */ |
| ret = mma9553_conf_gpio(data); |
| if (ret < 0) |
| return ret; |
| |
| ret = mma9551_app_reset(data->client, MMA9551_RSC_PED); |
| if (ret < 0) |
| return ret; |
| |
| /* Init config registers */ |
| data->conf.sleepmin = MMA9553_DEFAULT_SLEEPMIN; |
| data->conf.sleepmax = MMA9553_DEFAULT_SLEEPMAX; |
| data->conf.sleepthd = MMA9553_DEFAULT_SLEEPTHD; |
| data->conf.config = |
| mma9553_set_bits(data->conf.config, 1, MMA9553_MASK_CONF_CONFIG); |
| /* |
| * Clear the activity debounce counter when the activity level changes, |
| * so that the confidence level applies for any activity level. |
| */ |
| data->conf.config = mma9553_set_bits(data->conf.config, 1, |
| MMA9553_MASK_CONF_ACT_DBCNTM); |
| ret = |
| mma9551_write_config_words(data->client, MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_CONF_SLEEPMIN, |
| sizeof(data->conf), (u16 *) &data->conf); |
| if (ret < 0) { |
| dev_err(&data->client->dev, |
| "failed to write configuration registers\n"); |
| return ret; |
| } |
| |
| return mma9551_set_device_state(data->client, true); |
| } |
| |
| static int mma9553_read_raw(struct iio_dev *indio_dev, |
| struct iio_chan_spec const *chan, |
| int *val, int *val2, long mask) |
| { |
| struct mma9553_data *data = iio_priv(indio_dev); |
| int ret; |
| u16 tmp; |
| u8 activity; |
| bool powered_on; |
| |
| switch (mask) { |
| case IIO_CHAN_INFO_PROCESSED: |
| switch (chan->type) { |
| case IIO_STEPS: |
| /* |
| * The HW only counts steps and other dependent |
| * parameters (speed, distance, calories, activity) |
| * if power is on (from enabling an event or the |
| * step counter). |
| */ |
| powered_on = |
| mma9553_is_any_event_enabled(data, false, 0) || |
| data->stepcnt_enabled; |
| if (!powered_on) { |
| dev_err(&data->client->dev, |
| "No channels enabled\n"); |
| return -EINVAL; |
| } |
| mutex_lock(&data->mutex); |
| ret = mma9551_read_status_word(data->client, |
| MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_STEPCNT, |
| &tmp); |
| mutex_unlock(&data->mutex); |
| if (ret < 0) |
| return ret; |
| *val = tmp; |
| return IIO_VAL_INT; |
| case IIO_DISTANCE: |
| powered_on = |
| mma9553_is_any_event_enabled(data, false, 0) || |
| data->stepcnt_enabled; |
| if (!powered_on) { |
| dev_err(&data->client->dev, |
| "No channels enabled\n"); |
| return -EINVAL; |
| } |
| mutex_lock(&data->mutex); |
| ret = mma9551_read_status_word(data->client, |
| MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_DISTANCE, |
| &tmp); |
| mutex_unlock(&data->mutex); |
| if (ret < 0) |
| return ret; |
| *val = tmp; |
| return IIO_VAL_INT; |
| case IIO_ACTIVITY: |
| powered_on = |
| mma9553_is_any_event_enabled(data, false, 0) || |
| data->stepcnt_enabled; |
| if (!powered_on) { |
| dev_err(&data->client->dev, |
| "No channels enabled\n"); |
| return -EINVAL; |
| } |
| mutex_lock(&data->mutex); |
| ret = mma9551_read_status_word(data->client, |
| MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_STATUS, |
| &tmp); |
| mutex_unlock(&data->mutex); |
| if (ret < 0) |
| return ret; |
| |
| activity = |
| mma9553_get_bits(tmp, MMA9553_MASK_STATUS_ACTIVITY); |
| |
| /* |
| * The device does not support confidence value levels, |
| * so we will always have 100% for current activity and |
| * 0% for the others. |
| */ |
| if (chan->channel2 == mma9553_activity_to_mod(activity)) |
| *val = 100; |
| else |
| *val = 0; |
| return IIO_VAL_INT; |
| default: |
| return -EINVAL; |
| } |
| case IIO_CHAN_INFO_RAW: |
| switch (chan->type) { |
| case IIO_VELOCITY: /* m/h */ |
| if (chan->channel2 != IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z) |
| return -EINVAL; |
| powered_on = |
| mma9553_is_any_event_enabled(data, false, 0) || |
| data->stepcnt_enabled; |
| if (!powered_on) { |
| dev_err(&data->client->dev, |
| "No channels enabled\n"); |
| return -EINVAL; |
| } |
| mutex_lock(&data->mutex); |
| ret = mma9551_read_status_word(data->client, |
| MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_SPEED, &tmp); |
| mutex_unlock(&data->mutex); |
| if (ret < 0) |
| return ret; |
| *val = tmp; |
| return IIO_VAL_INT; |
| case IIO_ENERGY: /* Cal or kcal */ |
| powered_on = |
| mma9553_is_any_event_enabled(data, false, 0) || |
| data->stepcnt_enabled; |
| if (!powered_on) { |
| dev_err(&data->client->dev, |
| "No channels enabled\n"); |
| return -EINVAL; |
| } |
| mutex_lock(&data->mutex); |
| ret = mma9551_read_status_word(data->client, |
| MMA9551_APPID_PEDOMETER, |
| MMA9553_REG_CALORIES, |
| &tmp); |
| mutex_unlock(&data->mutex); |
| if (ret < 0) |
| return ret; |
| *val = tmp; |
| return IIO_VAL_INT; |
| case IIO_ACCEL: |
| mutex_lock(&data->mutex); |
| ret = mma9551_read_accel_chan(data->client, |
| chan, val, val2); |
| mutex_unlock(&data->mutex); |
| return ret; |
| default: |
| return -EINVAL; |
| } |
| case IIO_CHAN_INFO_SCALE: |
| switch (chan->type) { |
| case IIO_VELOCITY: /* m/h to m/s */ |
| if (chan->channel2 != IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z) |
| return -EINVAL; |
| *val = 0; |
| *val2 = 277; /* 0.000277 */ |
| return IIO_VAL_INT_PLUS_MICRO; |
| case IIO_ENERGY: /* Cal or kcal to J */ |
| *val = 4184; |
| return IIO_VAL_INT; |
| case IIO_ACCEL: |
| return mma9551_read_accel_scale(val, val2); |
| default: |
| return -EINVAL; |
| } |
| case IIO_CHAN_INFO_ENABLE: |
| *val = data->stepcnt_enabled; |
| return IIO_VAL_INT; |
| case IIO_CHAN_INFO_CALIBHEIGHT: |
| tmp = mma9553_get_bits(data->conf.height_weight, |
| MMA9553_MASK_CONF_HEIGHT); |
| *val = tmp / 100; /* cm to m */ |
| *val2 = (tmp % 100) * 10000; |
| return IIO_VAL_INT_PLUS_MICRO; |
| case IIO_CHAN_INFO_CALIBWEIGHT: |
| *val = mma9553_get_bits(data->conf.height_weight, |
| MMA9553_MASK_CONF_WEIGHT); |
| return IIO_VAL_INT; |
| case IIO_CHAN_INFO_DEBOUNCE_COUNT: |
| switch (chan->type) { |
| case IIO_STEPS: |
| *val = mma9553_get_bits(data->conf.filter, |
| MMA9553_MASK_CONF_FILTSTEP); |
| return IIO_VAL_INT; |
| default: |
| return -EINVAL; |
| } |
| case IIO_CHAN_INFO_DEBOUNCE_TIME: |
| switch (chan->type) { |
| case IIO_STEPS: |
| *val = mma9553_get_bits(data->conf.filter, |
| MMA9553_MASK_CONF_FILTTIME); |
| return IIO_VAL_INT; |
| default: |
| return -EINVAL; |
| } |
| case IIO_CHAN_INFO_INT_TIME: |
| switch (chan->type) { |
| case IIO_VELOCITY: |
| if (chan->channel2 != IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z) |
| return -EINVAL; |
| *val = mma9553_get_bits(data->conf.speed_step, |
| MMA9553_MASK_CONF_SPDPRD); |
| return IIO_VAL_INT; |
| default: |
| return -EINVAL; |
| } |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int mma9553_write_raw(struct iio_dev *indio_dev, |
| struct iio_chan_spec const *chan, |
| int val, int val2, long mask) |
| { |
| struct mma9553_data *data = iio_priv(indio_dev); |
| int ret, tmp; |
| |
| switch (mask) { |
| case IIO_CHAN_INFO_ENABLE: |
| if (data->stepcnt_enabled == !!val) |
| return 0; |
| mutex_lock(&data->mutex); |
| ret = mma9551_set_power_state(data->client, val); |
| if (ret < 0) { |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| data->stepcnt_enabled = val; |
| mutex_unlock(&data->mutex); |
| return 0; |
| case IIO_CHAN_INFO_CALIBHEIGHT: |
| /* m to cm */ |
| tmp = val * 100 + val2 / 10000; |
| if (tmp < 0 || tmp > 255) |
| return -EINVAL; |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, |
| MMA9553_REG_CONF_HEIGHT_WEIGHT, |
| &data->conf.height_weight, |
| tmp, MMA9553_MASK_CONF_HEIGHT); |
| mutex_unlock(&data->mutex); |
| return ret; |
| case IIO_CHAN_INFO_CALIBWEIGHT: |
| if (val < 0 || val > 255) |
| return -EINVAL; |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, |
| MMA9553_REG_CONF_HEIGHT_WEIGHT, |
| &data->conf.height_weight, |
| val, MMA9553_MASK_CONF_WEIGHT); |
| mutex_unlock(&data->mutex); |
| return ret; |
| case IIO_CHAN_INFO_DEBOUNCE_COUNT: |
| switch (chan->type) { |
| case IIO_STEPS: |
| /* |
| * Set to 0 to disable step filtering. If the value |
| * specified is greater than 6, then 6 will be used. |
| */ |
| if (val < 0) |
| return -EINVAL; |
| if (val > 6) |
| val = 6; |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, MMA9553_REG_CONF_FILTER, |
| &data->conf.filter, val, |
| MMA9553_MASK_CONF_FILTSTEP); |
| mutex_unlock(&data->mutex); |
| return ret; |
| default: |
| return -EINVAL; |
| } |
| case IIO_CHAN_INFO_DEBOUNCE_TIME: |
| switch (chan->type) { |
| case IIO_STEPS: |
| if (val < 0 || val > 127) |
| return -EINVAL; |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, MMA9553_REG_CONF_FILTER, |
| &data->conf.filter, val, |
| MMA9553_MASK_CONF_FILTTIME); |
| mutex_unlock(&data->mutex); |
| return ret; |
| default: |
| return -EINVAL; |
| } |
| case IIO_CHAN_INFO_INT_TIME: |
| switch (chan->type) { |
| case IIO_VELOCITY: |
| if (chan->channel2 != IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z) |
| return -EINVAL; |
| /* |
| * If set to a value greater than 5, then 5 will be |
| * used. Warning: Do not set SPDPRD to 0 or 1 as |
| * this may cause undesirable behavior. |
| */ |
| if (val < 2) |
| return -EINVAL; |
| if (val > 5) |
| val = 5; |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, |
| MMA9553_REG_CONF_SPEED_STEP, |
| &data->conf.speed_step, val, |
| MMA9553_MASK_CONF_SPDPRD); |
| mutex_unlock(&data->mutex); |
| return ret; |
| default: |
| return -EINVAL; |
| } |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int mma9553_read_event_config(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir) |
| { |
| |
| struct mma9553_data *data = iio_priv(indio_dev); |
| struct mma9553_event *event; |
| |
| event = mma9553_get_event(data, chan->type, chan->channel2, dir); |
| if (!event) |
| return -EINVAL; |
| |
| return event->enabled; |
| } |
| |
| static int mma9553_write_event_config(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir, int state) |
| { |
| struct mma9553_data *data = iio_priv(indio_dev); |
| struct mma9553_event *event; |
| int ret; |
| |
| event = mma9553_get_event(data, chan->type, chan->channel2, dir); |
| if (!event) |
| return -EINVAL; |
| |
| if (event->enabled == state) |
| return 0; |
| |
| mutex_lock(&data->mutex); |
| |
| ret = mma9551_set_power_state(data->client, state); |
| if (ret < 0) |
| goto err_out; |
| event->enabled = state; |
| |
| ret = mma9553_conf_gpio(data); |
| if (ret < 0) |
| goto err_conf_gpio; |
| |
| mutex_unlock(&data->mutex); |
| |
| return 0; |
| |
| err_conf_gpio: |
| if (state) { |
| event->enabled = false; |
| mma9551_set_power_state(data->client, false); |
| } |
| err_out: |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| |
| static int mma9553_read_event_value(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir, |
| enum iio_event_info info, |
| int *val, int *val2) |
| { |
| struct mma9553_data *data = iio_priv(indio_dev); |
| |
| *val2 = 0; |
| switch (info) { |
| case IIO_EV_INFO_VALUE: |
| switch (chan->type) { |
| case IIO_STEPS: |
| *val = mma9553_get_bits(data->conf.speed_step, |
| MMA9553_MASK_CONF_STEPCOALESCE); |
| return IIO_VAL_INT; |
| case IIO_ACTIVITY: |
| /* |
| * The device does not support confidence value levels. |
| * We set an average of 50%. |
| */ |
| *val = 50; |
| return IIO_VAL_INT; |
| default: |
| return -EINVAL; |
| } |
| case IIO_EV_INFO_PERIOD: |
| switch (chan->type) { |
| case IIO_ACTIVITY: |
| *val = MMA9553_ACTIVITY_THD_TO_SEC(data->conf.actthd); |
| return IIO_VAL_INT; |
| default: |
| return -EINVAL; |
| } |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int mma9553_write_event_value(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| enum iio_event_type type, |
| enum iio_event_direction dir, |
| enum iio_event_info info, |
| int val, int val2) |
| { |
| struct mma9553_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| switch (info) { |
| case IIO_EV_INFO_VALUE: |
| switch (chan->type) { |
| case IIO_STEPS: |
| if (val < 0 || val > 255) |
| return -EINVAL; |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, |
| MMA9553_REG_CONF_SPEED_STEP, |
| &data->conf.speed_step, val, |
| MMA9553_MASK_CONF_STEPCOALESCE); |
| mutex_unlock(&data->mutex); |
| return ret; |
| default: |
| return -EINVAL; |
| } |
| case IIO_EV_INFO_PERIOD: |
| switch (chan->type) { |
| case IIO_ACTIVITY: |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, MMA9553_REG_CONF_ACTTHD, |
| &data->conf.actthd, |
| MMA9553_ACTIVITY_SEC_TO_THD |
| (val), MMA9553_MASK_CONF_WORD); |
| mutex_unlock(&data->mutex); |
| return ret; |
| default: |
| return -EINVAL; |
| } |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int mma9553_get_calibgender_mode(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan) |
| { |
| struct mma9553_data *data = iio_priv(indio_dev); |
| u8 gender; |
| |
| gender = mma9553_get_bits(data->conf.filter, MMA9553_MASK_CONF_MALE); |
| /* |
| * HW expects 0 for female and 1 for male, |
| * while iio index is 0 for male and 1 for female. |
| */ |
| return !gender; |
| } |
| |
| static int mma9553_set_calibgender_mode(struct iio_dev *indio_dev, |
| const struct iio_chan_spec *chan, |
| unsigned int mode) |
| { |
| struct mma9553_data *data = iio_priv(indio_dev); |
| u8 gender = !mode; |
| int ret; |
| |
| if ((mode != 0) && (mode != 1)) |
| return -EINVAL; |
| mutex_lock(&data->mutex); |
| ret = mma9553_set_config(data, MMA9553_REG_CONF_FILTER, |
| &data->conf.filter, gender, |
| MMA9553_MASK_CONF_MALE); |
| mutex_unlock(&data->mutex); |
| |
| return ret; |
| } |
| |
| static const struct iio_event_spec mma9553_step_event = { |
| .type = IIO_EV_TYPE_CHANGE, |
| .dir = IIO_EV_DIR_NONE, |
| .mask_separate = BIT(IIO_EV_INFO_ENABLE) | BIT(IIO_EV_INFO_VALUE), |
| }; |
| |
| static const struct iio_event_spec mma9553_activity_events[] = { |
| { |
| .type = IIO_EV_TYPE_THRESH, |
| .dir = IIO_EV_DIR_RISING, |
| .mask_separate = BIT(IIO_EV_INFO_ENABLE) | |
| BIT(IIO_EV_INFO_VALUE) | |
| BIT(IIO_EV_INFO_PERIOD), |
| }, |
| { |
| .type = IIO_EV_TYPE_THRESH, |
| .dir = IIO_EV_DIR_FALLING, |
| .mask_separate = BIT(IIO_EV_INFO_ENABLE) | |
| BIT(IIO_EV_INFO_VALUE) | |
| BIT(IIO_EV_INFO_PERIOD), |
| }, |
| }; |
| |
| static const char * const calibgender_modes[] = { "male", "female" }; |
| |
| static const struct iio_enum mma9553_calibgender_enum = { |
| .items = calibgender_modes, |
| .num_items = ARRAY_SIZE(calibgender_modes), |
| .get = mma9553_get_calibgender_mode, |
| .set = mma9553_set_calibgender_mode, |
| }; |
| |
| static const struct iio_chan_spec_ext_info mma9553_ext_info[] = { |
| IIO_ENUM("calibgender", IIO_SHARED_BY_TYPE, &mma9553_calibgender_enum), |
| IIO_ENUM_AVAILABLE("calibgender", &mma9553_calibgender_enum), |
| {}, |
| }; |
| |
| #define MMA9553_PEDOMETER_CHANNEL(_type, _mask) { \ |
| .type = _type, \ |
| .info_mask_separate = BIT(IIO_CHAN_INFO_ENABLE) | \ |
| BIT(IIO_CHAN_INFO_CALIBHEIGHT) | \ |
| _mask, \ |
| .ext_info = mma9553_ext_info, \ |
| } |
| |
| #define MMA9553_ACTIVITY_CHANNEL(_chan2) { \ |
| .type = IIO_ACTIVITY, \ |
| .modified = 1, \ |
| .channel2 = _chan2, \ |
| .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \ |
| .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBHEIGHT), \ |
| .event_spec = mma9553_activity_events, \ |
| .num_event_specs = ARRAY_SIZE(mma9553_activity_events), \ |
| .ext_info = mma9553_ext_info, \ |
| } |
| |
| static const struct iio_chan_spec mma9553_channels[] = { |
| MMA9551_ACCEL_CHANNEL(IIO_MOD_X), |
| MMA9551_ACCEL_CHANNEL(IIO_MOD_Y), |
| MMA9551_ACCEL_CHANNEL(IIO_MOD_Z), |
| |
| { |
| .type = IIO_STEPS, |
| .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) | |
| BIT(IIO_CHAN_INFO_ENABLE) | |
| BIT(IIO_CHAN_INFO_DEBOUNCE_COUNT) | |
| BIT(IIO_CHAN_INFO_DEBOUNCE_TIME), |
| .event_spec = &mma9553_step_event, |
| .num_event_specs = 1, |
| }, |
| |
| MMA9553_PEDOMETER_CHANNEL(IIO_DISTANCE, BIT(IIO_CHAN_INFO_PROCESSED)), |
| { |
| .type = IIO_VELOCITY, |
| .modified = 1, |
| .channel2 = IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z, |
| .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| BIT(IIO_CHAN_INFO_SCALE) | |
| BIT(IIO_CHAN_INFO_INT_TIME) | |
| BIT(IIO_CHAN_INFO_ENABLE), |
| .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBHEIGHT), |
| .ext_info = mma9553_ext_info, |
| }, |
| MMA9553_PEDOMETER_CHANNEL(IIO_ENERGY, BIT(IIO_CHAN_INFO_RAW) | |
| BIT(IIO_CHAN_INFO_SCALE) | |
| BIT(IIO_CHAN_INFO_CALIBWEIGHT)), |
| |
| MMA9553_ACTIVITY_CHANNEL(IIO_MOD_RUNNING), |
| MMA9553_ACTIVITY_CHANNEL(IIO_MOD_JOGGING), |
| MMA9553_ACTIVITY_CHANNEL(IIO_MOD_WALKING), |
| MMA9553_ACTIVITY_CHANNEL(IIO_MOD_STILL), |
| }; |
| |
| static const struct iio_info mma9553_info = { |
| .driver_module = THIS_MODULE, |
| .read_raw = mma9553_read_raw, |
| .write_raw = mma9553_write_raw, |
| .read_event_config = mma9553_read_event_config, |
| .write_event_config = mma9553_write_event_config, |
| .read_event_value = mma9553_read_event_value, |
| .write_event_value = mma9553_write_event_value, |
| }; |
| |
| static irqreturn_t mma9553_irq_handler(int irq, void *private) |
| { |
| struct iio_dev *indio_dev = private; |
| struct mma9553_data *data = iio_priv(indio_dev); |
| |
| data->timestamp = iio_get_time_ns(); |
| /* |
| * Since we only configure the interrupt pin when an |
| * event is enabled, we are sure we have at least |
| * one event enabled at this point. |
| */ |
| return IRQ_WAKE_THREAD; |
| } |
| |
| static irqreturn_t mma9553_event_handler(int irq, void *private) |
| { |
| struct iio_dev *indio_dev = private; |
| struct mma9553_data *data = iio_priv(indio_dev); |
| u16 stepcnt; |
| u8 activity; |
| struct mma9553_event *ev_activity, *ev_prev_activity, *ev_step_detect; |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| ret = mma9553_read_activity_stepcnt(data, &activity, &stepcnt); |
| if (ret < 0) { |
| mutex_unlock(&data->mutex); |
| return IRQ_HANDLED; |
| } |
| |
| ev_prev_activity = |
| mma9553_get_event(data, IIO_ACTIVITY, |
| mma9553_activity_to_mod(data->activity), |
| IIO_EV_DIR_FALLING); |
| ev_activity = |
| mma9553_get_event(data, IIO_ACTIVITY, |
| mma9553_activity_to_mod(activity), |
| IIO_EV_DIR_RISING); |
| ev_step_detect = |
| mma9553_get_event(data, IIO_STEPS, IIO_NO_MOD, IIO_EV_DIR_NONE); |
| |
| if (ev_step_detect->enabled && (stepcnt != data->stepcnt)) { |
| data->stepcnt = stepcnt; |
| iio_push_event(indio_dev, |
| IIO_EVENT_CODE(IIO_STEPS, 0, IIO_NO_MOD, |
| IIO_EV_DIR_NONE, IIO_EV_TYPE_CHANGE, 0, 0, 0), |
| data->timestamp); |
| } |
| |
| if (activity != data->activity) { |
| data->activity = activity; |
| /* ev_activity can be NULL if activity == ACTIVITY_UNKNOWN */ |
| if (ev_prev_activity && ev_prev_activity->enabled) |
| iio_push_event(indio_dev, |
| IIO_EVENT_CODE(IIO_ACTIVITY, 0, |
| ev_prev_activity->info->mod, |
| IIO_EV_DIR_FALLING, |
| IIO_EV_TYPE_THRESH, 0, 0, 0), |
| data->timestamp); |
| |
| if (ev_activity && ev_activity->enabled) |
| iio_push_event(indio_dev, |
| IIO_EVENT_CODE(IIO_ACTIVITY, 0, |
| ev_activity->info->mod, |
| IIO_EV_DIR_RISING, |
| IIO_EV_TYPE_THRESH, 0, 0, 0), |
| data->timestamp); |
| } |
| mutex_unlock(&data->mutex); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int mma9553_gpio_probe(struct i2c_client *client) |
| { |
| struct device *dev; |
| struct gpio_desc *gpio; |
| int ret; |
| |
| if (!client) |
| return -EINVAL; |
| |
| dev = &client->dev; |
| |
| /* data ready GPIO interrupt pin */ |
| gpio = devm_gpiod_get_index(dev, MMA9553_GPIO_NAME, 0, GPIOD_IN); |
| if (IS_ERR(gpio)) { |
| dev_err(dev, "ACPI GPIO get index failed\n"); |
| return PTR_ERR(gpio); |
| } |
| |
| ret = gpiod_to_irq(gpio); |
| |
| dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); |
| |
| return ret; |
| } |
| |
| static const char *mma9553_match_acpi_device(struct device *dev) |
| { |
| const struct acpi_device_id *id; |
| |
| id = acpi_match_device(dev->driver->acpi_match_table, dev); |
| if (!id) |
| return NULL; |
| |
| return dev_name(dev); |
| } |
| |
| static int mma9553_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct mma9553_data *data; |
| struct iio_dev *indio_dev; |
| const char *name = NULL; |
| int ret; |
| |
| indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); |
| if (!indio_dev) |
| return -ENOMEM; |
| |
| data = iio_priv(indio_dev); |
| i2c_set_clientdata(client, indio_dev); |
| data->client = client; |
| |
| if (id) |
| name = id->name; |
| else if (ACPI_HANDLE(&client->dev)) |
| name = mma9553_match_acpi_device(&client->dev); |
| else |
| return -ENOSYS; |
| |
| mutex_init(&data->mutex); |
| mma9553_init_events(data); |
| |
| ret = mma9553_init(data); |
| if (ret < 0) |
| return ret; |
| |
| indio_dev->dev.parent = &client->dev; |
| indio_dev->channels = mma9553_channels; |
| indio_dev->num_channels = ARRAY_SIZE(mma9553_channels); |
| indio_dev->name = name; |
| indio_dev->modes = INDIO_DIRECT_MODE; |
| indio_dev->info = &mma9553_info; |
| |
| if (client->irq < 0) |
| client->irq = mma9553_gpio_probe(client); |
| |
| if (client->irq >= 0) { |
| ret = devm_request_threaded_irq(&client->dev, client->irq, |
| mma9553_irq_handler, |
| mma9553_event_handler, |
| IRQF_TRIGGER_RISING, |
| MMA9553_IRQ_NAME, indio_dev); |
| if (ret < 0) { |
| dev_err(&client->dev, "request irq %d failed\n", |
| client->irq); |
| goto out_poweroff; |
| } |
| |
| } |
| |
| ret = iio_device_register(indio_dev); |
| if (ret < 0) { |
| dev_err(&client->dev, "unable to register iio device\n"); |
| goto out_poweroff; |
| } |
| |
| ret = pm_runtime_set_active(&client->dev); |
| if (ret < 0) |
| goto out_iio_unregister; |
| |
| pm_runtime_enable(&client->dev); |
| pm_runtime_set_autosuspend_delay(&client->dev, |
| MMA9551_AUTO_SUSPEND_DELAY_MS); |
| pm_runtime_use_autosuspend(&client->dev); |
| |
| dev_dbg(&indio_dev->dev, "Registered device %s\n", name); |
| |
| return 0; |
| |
| out_iio_unregister: |
| iio_device_unregister(indio_dev); |
| out_poweroff: |
| mma9551_set_device_state(client, false); |
| return ret; |
| } |
| |
| static int mma9553_remove(struct i2c_client *client) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(client); |
| struct mma9553_data *data = iio_priv(indio_dev); |
| |
| pm_runtime_disable(&client->dev); |
| pm_runtime_set_suspended(&client->dev); |
| pm_runtime_put_noidle(&client->dev); |
| |
| iio_device_unregister(indio_dev); |
| mutex_lock(&data->mutex); |
| mma9551_set_device_state(data->client, false); |
| mutex_unlock(&data->mutex); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int mma9553_runtime_suspend(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct mma9553_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| ret = mma9551_set_device_state(data->client, false); |
| mutex_unlock(&data->mutex); |
| if (ret < 0) { |
| dev_err(&data->client->dev, "powering off device failed\n"); |
| return -EAGAIN; |
| } |
| |
| return 0; |
| } |
| |
| static int mma9553_runtime_resume(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct mma9553_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| ret = mma9551_set_device_state(data->client, true); |
| if (ret < 0) |
| return ret; |
| |
| mma9551_sleep(MMA9553_DEFAULT_SAMPLE_RATE); |
| |
| return 0; |
| } |
| #endif |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int mma9553_suspend(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct mma9553_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| ret = mma9551_set_device_state(data->client, false); |
| mutex_unlock(&data->mutex); |
| |
| return ret; |
| } |
| |
| static int mma9553_resume(struct device *dev) |
| { |
| struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
| struct mma9553_data *data = iio_priv(indio_dev); |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| ret = mma9551_set_device_state(data->client, true); |
| mutex_unlock(&data->mutex); |
| |
| return ret; |
| } |
| #endif |
| |
| static const struct dev_pm_ops mma9553_pm_ops = { |
| SET_SYSTEM_SLEEP_PM_OPS(mma9553_suspend, mma9553_resume) |
| SET_RUNTIME_PM_OPS(mma9553_runtime_suspend, |
| mma9553_runtime_resume, NULL) |
| }; |
| |
| static const struct acpi_device_id mma9553_acpi_match[] = { |
| {"MMA9553", 0}, |
| {}, |
| }; |
| |
| MODULE_DEVICE_TABLE(acpi, mma9553_acpi_match); |
| |
| static const struct i2c_device_id mma9553_id[] = { |
| {"mma9553", 0}, |
| {}, |
| }; |
| |
| MODULE_DEVICE_TABLE(i2c, mma9553_id); |
| |
| static struct i2c_driver mma9553_driver = { |
| .driver = { |
| .name = MMA9553_DRV_NAME, |
| .acpi_match_table = ACPI_PTR(mma9553_acpi_match), |
| .pm = &mma9553_pm_ops, |
| }, |
| .probe = mma9553_probe, |
| .remove = mma9553_remove, |
| .id_table = mma9553_id, |
| }; |
| |
| module_i2c_driver(mma9553_driver); |
| |
| MODULE_AUTHOR("Irina Tirdea <irina.tirdea@intel.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("MMA9553L pedometer platform driver"); |