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path: root/drivers/iio/accel/mma9553.c
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Diffstat (limited to 'drivers/iio/accel/mma9553.c')
-rw-r--r--drivers/iio/accel/mma9553.c83
1 files changed, 43 insertions, 40 deletions
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
index 8bfc61824..771858cb6 100644
--- a/drivers/iio/accel/mma9553.c
+++ b/drivers/iio/accel/mma9553.c
@@ -182,6 +182,10 @@ struct mma9553_conf_regs {
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];
@@ -322,7 +326,8 @@ static int mma9553_read_activity_stepcnt(struct mma9553_data *data,
int ret;
ret = mma9551_read_status_words(data->client, MMA9551_APPID_PEDOMETER,
- MMA9553_REG_STATUS, sizeof(u32), buf);
+ MMA9553_REG_STATUS, ARRAY_SIZE(buf),
+ buf);
if (ret < 0) {
dev_err(&data->client->dev,
"error reading status and stepcnt\n");
@@ -342,10 +347,10 @@ static int mma9553_conf_gpio(struct mma9553_data *data)
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);
+ 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.
@@ -371,9 +376,8 @@ static int mma9553_conf_gpio(struct mma9553_data *data)
return ret;
}
- ret = mma9551_gpio_config(data->client,
- MMA9553_DEFAULT_GPIO_PIN,
- appid, bitnum, MMA9553_DEFAULT_GPIO_POLARITY);
+ 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;
@@ -394,17 +398,16 @@ static int mma9553_init(struct mma9553_data *data)
* 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);
+ 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);
@@ -419,18 +422,18 @@ static int mma9553_init(struct mma9553_data *data)
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);
+ 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);
+ 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");
@@ -567,7 +570,7 @@ static int mma9553_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_CALIBHEIGHT:
tmp = mma9553_get_bits(data->conf.height_weight,
- MMA9553_MASK_CONF_HEIGHT);
+ MMA9553_MASK_CONF_HEIGHT);
*val = tmp / 100; /* cm to m */
*val2 = (tmp % 100) * 10000;
return IIO_VAL_INT_PLUS_MICRO;
@@ -719,7 +722,6 @@ static int mma9553_read_event_config(struct iio_dev *indio_dev,
enum iio_event_type type,
enum iio_event_direction dir)
{
-
struct mma9553_data *data = iio_priv(indio_dev);
struct mma9553_event *event;
@@ -1026,22 +1028,22 @@ static irqreturn_t mma9553_event_handler(int irq, void *private)
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);
+ 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),
+ IIO_EV_DIR_NONE,
+ IIO_EV_TYPE_CHANGE, 0, 0, 0),
data->timestamp);
}
@@ -1051,17 +1053,19 @@ static irqreturn_t mma9553_event_handler(int irq, void *private)
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),
+ 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),
+ ev_activity->info->mod,
+ IIO_EV_DIR_RISING,
+ IIO_EV_TYPE_THRESH, 0, 0,
+ 0),
data->timestamp);
}
mutex_unlock(&data->mutex);
@@ -1145,7 +1149,7 @@ static int mma9553_probe(struct i2c_client *client,
if (client->irq < 0)
client->irq = mma9553_gpio_probe(client);
- if (client->irq >= 0) {
+ if (client->irq > 0) {
ret = devm_request_threaded_irq(&client->dev, client->irq,
mma9553_irq_handler,
mma9553_event_handler,
@@ -1156,7 +1160,6 @@ static int mma9553_probe(struct i2c_client *client,
client->irq);
goto out_poweroff;
}
-
}
ret = iio_device_register(indio_dev);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 23:03:17 +0000