mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
![Alexandru Ardelean](/assets/img/avatar_default.png)
These were found by doing some shell magic: ------------ for file in $(git grep -w devm_iio_device_alloc | cut -d: -f1 | sort | uniq) ; do if grep 'parent =' $file | grep -v trig | grep -vq devm_; then echo "$file -> $(grep "parent =" $file)" fi done ----------- The output is bearable [after the semantic patch is applied]. There is a mix of trigger assignments with some iio device parent assignments that are removed via this patch. JC: A few more added via inspection of all parent = statements in drivers/iio. Some of these may just have crossed with this series, others were less obvious to scripting due to some cross file / module boundary calls. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
1263 lines
32 KiB
C
1263 lines
32 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Freescale MMA9553L Intelligent Pedometer driver
|
|
* Copyright (c) 2014, Intel Corporation.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/acpi.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"
|
|
|
|
/* 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
|
|
#define MMA9553_MAX_ACTTHD GENMASK(15, 0)
|
|
|
|
/* 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 GENMASK(10, 8)
|
|
#define MMA9553_MASK_STATUS_VERSION GENMASK(7, 0)
|
|
|
|
#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
|
|
|
|
/* Bitnum used for GPIO configuration = bit number in high status byte */
|
|
#define MMA9553_STATUS_TO_BITNUM(bit) (ffs(bit) - 9)
|
|
#define MMA9553_MAX_BITNUM MMA9553_STATUS_TO_BITNUM(BIT(16))
|
|
|
|
#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;
|
|
/*
|
|
* 1. Serialize access to HW (requested by mma9551_core API).
|
|
* 2. Serialize sequences that power on/off the device and access HW.
|
|
*/
|
|
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)
|
|
{
|
|
u16 buf[2];
|
|
int ret;
|
|
|
|
ret = mma9551_read_status_words(data->client, MMA9551_APPID_PEDOMETER,
|
|
MMA9553_REG_STATUS, ARRAY_SIZE(buf),
|
|
buf);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev,
|
|
"error reading status and stepcnt\n");
|
|
return ret;
|
|
}
|
|
|
|
*activity = mma9553_get_bits(buf[0], MMA9553_MASK_STATUS_ACTIVITY);
|
|
*stepcnt = buf[1];
|
|
|
|
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 = MMA9553_STATUS_TO_BITNUM(MMA9553_MASK_STATUS_MRGFL);
|
|
else if (ev_step_detect->enabled)
|
|
bitnum = MMA9553_STATUS_TO_BITNUM(MMA9553_MASK_STATUS_STEPCHG);
|
|
else if (activity_enabled)
|
|
bitnum = MMA9553_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) / sizeof(u16),
|
|
(u16 *)&data->conf);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev,
|
|
"failed to read configuration registers\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Reset GPIO */
|
|
data->gpio_bitnum = MMA9553_MAX_BITNUM;
|
|
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) / sizeof(u16),
|
|
(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_status_word(struct mma9553_data *data, u16 reg,
|
|
u16 *tmp)
|
|
{
|
|
bool powered_on;
|
|
int ret;
|
|
|
|
/*
|
|
* 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,
|
|
reg, tmp);
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_PROCESSED:
|
|
switch (chan->type) {
|
|
case IIO_STEPS:
|
|
ret = mma9553_read_status_word(data,
|
|
MMA9553_REG_STEPCNT,
|
|
&tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
*val = tmp;
|
|
return IIO_VAL_INT;
|
|
case IIO_DISTANCE:
|
|
ret = mma9553_read_status_word(data,
|
|
MMA9553_REG_DISTANCE,
|
|
&tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
*val = tmp;
|
|
return IIO_VAL_INT;
|
|
case IIO_ACTIVITY:
|
|
ret = mma9553_read_status_word(data,
|
|
MMA9553_REG_STATUS,
|
|
&tmp);
|
|
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;
|
|
ret = mma9553_read_status_word(data,
|
|
MMA9553_REG_SPEED,
|
|
&tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
*val = tmp;
|
|
return IIO_VAL_INT;
|
|
case IIO_ENERGY: /* Cal or kcal */
|
|
ret = mma9553_read_status_word(data,
|
|
MMA9553_REG_CALORIES,
|
|
&tmp);
|
|
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:
|
|
if (val < 0 || val > MMA9553_ACTIVITY_THD_TO_SEC(
|
|
MMA9553_MAX_ACTTHD))
|
|
return -EINVAL;
|
|
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 mma9553_calibgender_modes[] = { "male", "female" };
|
|
|
|
static const struct iio_enum mma9553_calibgender_enum = {
|
|
.items = mma9553_calibgender_modes,
|
|
.num_items = ARRAY_SIZE(mma9553_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) | \
|
|
BIT(IIO_CHAN_INFO_ENABLE), \
|
|
.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 = {
|
|
.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(indio_dev);
|
|
/*
|
|
* 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 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->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) {
|
|
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 = pm_runtime_set_active(&client->dev);
|
|
if (ret < 0)
|
|
goto out_poweroff;
|
|
|
|
pm_runtime_enable(&client->dev);
|
|
pm_runtime_set_autosuspend_delay(&client->dev,
|
|
MMA9551_AUTO_SUSPEND_DELAY_MS);
|
|
pm_runtime_use_autosuspend(&client->dev);
|
|
|
|
ret = iio_device_register(indio_dev);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "unable to register iio device\n");
|
|
goto out_poweroff;
|
|
}
|
|
|
|
dev_dbg(&indio_dev->dev, "Registered device %s\n", name);
|
|
return 0;
|
|
|
|
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);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
|
|
pm_runtime_disable(&client->dev);
|
|
pm_runtime_set_suspended(&client->dev);
|
|
pm_runtime_put_noidle(&client->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");
|