#include <linux/string.h>
#include <linux/acpi.h>
#include <linux/gpio/consumer.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger.h>
+#include <linux/iio/events.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/accel/kxcjk_1013.h>
#define KXCJK1013_DATA_MASK_12_BIT 0x0FFF
#define KXCJK1013_MAX_STARTUP_TIME_US 100000
+#define KXCJK1013_SLEEP_DELAY_MS 2000
+
+#define KXCJK1013_REG_INT_SRC2_BIT_ZP BIT(0)
+#define KXCJK1013_REG_INT_SRC2_BIT_ZN BIT(1)
+#define KXCJK1013_REG_INT_SRC2_BIT_YP BIT(2)
+#define KXCJK1013_REG_INT_SRC2_BIT_YN BIT(3)
+#define KXCJK1013_REG_INT_SRC2_BIT_XP BIT(4)
+#define KXCJK1013_REG_INT_SRC2_BIT_XN BIT(5)
+
+#define KXCJK1013_DEFAULT_WAKE_THRES 1
+
+enum kx_chipset {
+ KXCJK1013,
+ KXCJ91008,
+ KXTJ21009,
+ KX_MAX_CHIPS /* this must be last */
+};
+
struct kxcjk1013_data {
struct i2c_client *client;
- struct iio_trigger *trig;
- bool trig_mode;
+ struct iio_trigger *dready_trig;
+ struct iio_trigger *motion_trig;
struct mutex mutex;
s16 buffer[8];
- int power_state;
u8 odr_bits;
+ u8 range;
+ int wake_thres;
+ int wake_dur;
bool active_high_intr;
+ bool dready_trigger_on;
+ int ev_enable_state;
+ bool motion_trigger_on;
+ int64_t timestamp;
+ enum kx_chipset chipset;
};
enum kxcjk1013_axis {
OPERATION,
};
+enum kxcjk1013_range {
+ KXCJK1013_RANGE_2G,
+ KXCJK1013_RANGE_4G,
+ KXCJK1013_RANGE_8G,
+};
+
static const struct {
int val;
int val2;
static const struct {
int odr_bits;
int usec;
-} odr_start_up_times[] = { {0x08, 100000}, {0x09, 100000}, {0x0A, 100000},
- {0x0B, 100000}, { 0, 80000}, {0x01, 41000},
- {0x02, 21000}, {0x03, 11000}, {0x04, 6400},
- {0x05, 3900}, {0x06, 2700}, {0x07, 2100} };
+} odr_start_up_times[KX_MAX_CHIPS][12] = {
+ /* KXCJK-1013 */
+ {
+ {0x08, 100000},
+ {0x09, 100000},
+ {0x0A, 100000},
+ {0x0B, 100000},
+ {0, 80000},
+ {0x01, 41000},
+ {0x02, 21000},
+ {0x03, 11000},
+ {0x04, 6400},
+ {0x05, 3900},
+ {0x06, 2700},
+ {0x07, 2100},
+ },
+ /* KXCJ9-1008 */
+ {
+ {0x08, 100000},
+ {0x09, 100000},
+ {0x0A, 100000},
+ {0x0B, 100000},
+ {0, 80000},
+ {0x01, 41000},
+ {0x02, 21000},
+ {0x03, 11000},
+ {0x04, 6400},
+ {0x05, 3900},
+ {0x06, 2700},
+ {0x07, 2100},
+ },
+ /* KXCTJ2-1009 */
+ {
+ {0x08, 1240000},
+ {0x09, 621000},
+ {0x0A, 309000},
+ {0x0B, 151000},
+ {0, 80000},
+ {0x01, 41000},
+ {0x02, 21000},
+ {0x03, 11000},
+ {0x04, 6000},
+ {0x05, 4000},
+ {0x06, 3000},
+ {0x07, 2000},
+ },
+};
+
+static const struct {
+ u16 scale;
+ u8 gsel_0;
+ u8 gsel_1;
+} KXCJK1013_scale_table[] = { {9582, 0, 0},
+ {19163, 1, 0},
+ {38326, 0, 1} };
+
+static const struct {
+ int val;
+ int val2;
+ int odr_bits;
+} wake_odr_data_rate_table[] = { {0, 781000, 0x00},
+ {1, 563000, 0x01},
+ {3, 125000, 0x02},
+ {6, 250000, 0x03},
+ {12, 500000, 0x04},
+ {25, 0, 0x05},
+ {50, 0, 0x06},
+ {100, 0, 0x06},
+ {200, 0, 0x06},
+ {400, 0, 0x06},
+ {800, 0, 0x06},
+ {1600, 0, 0x06} };
static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
enum kxcjk1013_mode mode)
return 0;
}
+static int kxcjk1013_get_mode(struct kxcjk1013_data *data,
+ enum kxcjk1013_mode *mode)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
+ return ret;
+ }
+
+ if (ret & KXCJK1013_REG_CTRL1_BIT_PC1)
+ *mode = OPERATION;
+ else
+ *mode = STANDBY;
+
+ return 0;
+}
+
+static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
+ return ret;
+ }
+
+ ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3);
+ ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4);
+
+ ret = i2c_smbus_write_byte_data(data->client,
+ KXCJK1013_REG_CTRL1,
+ ret);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
+ return ret;
+ }
+
+ data->range = range_index;
+
+ return 0;
+}
+
static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
{
int ret;
return ret;
}
- /* Setting range to 4G */
- ret |= KXCJK1013_REG_CTRL1_BIT_GSEL0;
- ret &= ~KXCJK1013_REG_CTRL1_BIT_GSEL1;
-
/* Set 12 bit mode */
ret |= KXCJK1013_REG_CTRL1_BIT_RES;
return ret;
}
+ /* Setting range to 4G */
+ ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G);
+ if (ret < 0)
+ return ret;
+
ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_data_ctrl\n");
return ret;
}
+ ret = kxcjk1013_set_mode(data, OPERATION);
+ if (ret < 0)
+ return ret;
+
+ data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES;
+
return 0;
}
-static int kxcjk1013_chip_setup_interrupt(struct kxcjk1013_data *data,
- bool status)
+#ifdef CONFIG_PM_RUNTIME
+static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data)
+{
+ int i;
+ int idx = data->chipset;
+
+ for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) {
+ if (odr_start_up_times[idx][i].odr_bits == data->odr_bits)
+ return odr_start_up_times[idx][i].usec;
+ }
+
+ return KXCJK1013_MAX_STARTUP_TIME_US;
+}
+#endif
+
+static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
{
int ret;
+ if (on)
+ ret = pm_runtime_get_sync(&data->client->dev);
+ else {
+ pm_runtime_mark_last_busy(&data->client->dev);
+ ret = pm_runtime_put_autosuspend(&data->client->dev);
+ }
+ if (ret < 0) {
+ dev_err(&data->client->dev,
+ "Failed: kxcjk1013_set_power_state for %d\n", on);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(data->client,
+ KXCJK1013_REG_WAKE_TIMER,
+ data->wake_dur);
+ if (ret < 0) {
+ dev_err(&data->client->dev,
+ "Error writing reg_wake_timer\n");
+ return ret;
+ }
+
+ ret = i2c_smbus_write_byte_data(data->client,
+ KXCJK1013_REG_WAKE_THRES,
+ data->wake_thres);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
+ bool status)
+{
+ int ret;
+ enum kxcjk1013_mode store_mode;
+
+ ret = kxcjk1013_get_mode(data, &store_mode);
+ if (ret < 0)
+ return ret;
+
+ /* This is requirement by spec to change state to STANDBY */
+ ret = kxcjk1013_set_mode(data, STANDBY);
+ if (ret < 0)
+ return ret;
+
+ ret = kxcjk1013_chip_update_thresholds(data);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
+ return ret;
+ }
+
+ if (status)
+ ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
+ else
+ ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;
+
+ ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
+ ret);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
+ return ret;
+ }
+
+ ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
+ return ret;
+ }
+
+ if (status)
+ ret |= KXCJK1013_REG_CTRL1_BIT_WUFE;
+ else
+ ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE;
+
+ ret = i2c_smbus_write_byte_data(data->client,
+ KXCJK1013_REG_CTRL1, ret);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
+ return ret;
+ }
+
+ if (store_mode == OPERATION) {
+ ret = kxcjk1013_set_mode(data, OPERATION);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
+ bool status)
+{
+ int ret;
+ enum kxcjk1013_mode store_mode;
+
+ ret = kxcjk1013_get_mode(data, &store_mode);
+ if (ret < 0)
+ return ret;
+
/* This is requirement by spec to change state to STANDBY */
ret = kxcjk1013_set_mode(data, STANDBY);
if (ret < 0)
return ret;
}
- return ret;
+ if (store_mode == OPERATION) {
+ ret = kxcjk1013_set_mode(data, OPERATION);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
}
static int kxcjk1013_convert_freq_to_bit(int val, int val2)
return -EINVAL;
}
+static int kxcjk1013_convert_wake_odr_to_bit(int val, int val2)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(wake_odr_data_rate_table); ++i) {
+ if (wake_odr_data_rate_table[i].val == val &&
+ wake_odr_data_rate_table[i].val2 == val2) {
+ return wake_odr_data_rate_table[i].odr_bits;
+ }
+ }
+
+ return -EINVAL;
+}
+
static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
{
int ret;
int odr_bits;
+ enum kxcjk1013_mode store_mode;
+
+ ret = kxcjk1013_get_mode(data, &store_mode);
+ if (ret < 0)
+ return ret;
odr_bits = kxcjk1013_convert_freq_to_bit(val, val2);
if (odr_bits < 0)
data->odr_bits = odr_bits;
- /* Check, if the ODR is changed after data enable */
- if (data->power_state) {
- /* Set the state back to operation */
+ odr_bits = kxcjk1013_convert_wake_odr_to_bit(val, val2);
+ if (odr_bits < 0)
+ return odr_bits;
+
+ ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL2,
+ odr_bits);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_ctrl2\n");
+ return ret;
+ }
+
+ if (store_mode == OPERATION) {
ret = kxcjk1013_set_mode(data, OPERATION);
if (ret < 0)
return ret;
return ret;
}
-static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data)
+static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val)
{
- int i;
+ int ret, i;
+ enum kxcjk1013_mode store_mode;
+
+
+ for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) {
+ if (KXCJK1013_scale_table[i].scale == val) {
+
+ ret = kxcjk1013_get_mode(data, &store_mode);
+ if (ret < 0)
+ return ret;
+
+ ret = kxcjk1013_set_mode(data, STANDBY);
+ if (ret < 0)
+ return ret;
+
+ ret = kxcjk1013_set_range(data, i);
+ if (ret < 0)
+ return ret;
- for (i = 0; i < ARRAY_SIZE(odr_start_up_times); ++i) {
- if (odr_start_up_times[i].odr_bits == data->odr_bits)
- return odr_start_up_times[i].usec;
+ if (store_mode == OPERATION) {
+ ret = kxcjk1013_set_mode(data, OPERATION);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+ }
}
- return KXCJK1013_MAX_STARTUP_TIME_US;
+ return -EINVAL;
}
static int kxcjk1013_read_raw(struct iio_dev *indio_dev,
if (iio_buffer_enabled(indio_dev))
ret = -EBUSY;
else {
- int sleep_val;
-
- ret = kxcjk1013_set_mode(data, OPERATION);
+ ret = kxcjk1013_set_power_state(data, true);
if (ret < 0) {
mutex_unlock(&data->mutex);
return ret;
}
- ++data->power_state;
- sleep_val = kxcjk1013_get_startup_times(data);
- if (sleep_val < 20000)
- usleep_range(sleep_val, 20000);
- else
- msleep_interruptible(sleep_val/1000);
ret = kxcjk1013_get_acc_reg(data, chan->scan_index);
- if (--data->power_state == 0)
- kxcjk1013_set_mode(data, STANDBY);
+ if (ret < 0) {
+ kxcjk1013_set_power_state(data, false);
+ mutex_unlock(&data->mutex);
+ return ret;
+ }
+ *val = sign_extend32(ret >> 4, 11);
+ ret = kxcjk1013_set_power_state(data, false);
}
mutex_unlock(&data->mutex);
if (ret < 0)
return ret;
- *val = sign_extend32(ret >> 4, 11);
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
*val = 0;
- *val2 = 19163; /* range +-4g (4/2047*9.806650) */
+ *val2 = KXCJK1013_scale_table[data->range].scale;
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_SAMP_FREQ:
ret = kxcjk1013_set_odr(data, val, val2);
mutex_unlock(&data->mutex);
break;
+ case IIO_CHAN_INFO_SCALE:
+ if (val)
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+ ret = kxcjk1013_set_scale(data, val2);
+ mutex_unlock(&data->mutex);
+ break;
default:
ret = -EINVAL;
}
return ret;
}
+static int kxcjk1013_read_event(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 kxcjk1013_data *data = iio_priv(indio_dev);
+
+ *val2 = 0;
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ *val = data->wake_thres;
+ break;
+ case IIO_EV_INFO_PERIOD:
+ *val = data->wake_dur;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return IIO_VAL_INT;
+}
+
+static int kxcjk1013_write_event(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 kxcjk1013_data *data = iio_priv(indio_dev);
+
+ if (data->ev_enable_state)
+ return -EBUSY;
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ data->wake_thres = val;
+ break;
+ case IIO_EV_INFO_PERIOD:
+ data->wake_dur = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int kxcjk1013_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 kxcjk1013_data *data = iio_priv(indio_dev);
+
+ return data->ev_enable_state;
+}
+
+static int kxcjk1013_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 kxcjk1013_data *data = iio_priv(indio_dev);
+ int ret;
+
+ if (state && data->ev_enable_state)
+ return 0;
+
+ mutex_lock(&data->mutex);
+
+ if (!state && data->motion_trigger_on) {
+ data->ev_enable_state = 0;
+ mutex_unlock(&data->mutex);
+ return 0;
+ }
+
+ /*
+ * We will expect the enable and disable to do operation in
+ * in reverse order. This will happen here anyway as our
+ * resume operation uses sync mode runtime pm calls, the
+ * suspend operation will be delayed by autosuspend delay
+ * So the disable operation will still happen in reverse of
+ * enable operation. When runtime pm is disabled the mode
+ * is always on so sequence doesn't matter
+ */
+ ret = kxcjk1013_set_power_state(data, state);
+ if (ret < 0) {
+ mutex_unlock(&data->mutex);
+ return ret;
+ }
+
+ ret = kxcjk1013_setup_any_motion_interrupt(data, state);
+ if (ret < 0) {
+ mutex_unlock(&data->mutex);
+ return ret;
+ }
+
+ data->ev_enable_state = state;
+ mutex_unlock(&data->mutex);
+
+ return 0;
+}
+
static int kxcjk1013_validate_trigger(struct iio_dev *indio_dev,
struct iio_trigger *trig)
{
struct kxcjk1013_data *data = iio_priv(indio_dev);
- if (data->trig != trig)
+ if (data->dready_trig != trig && data->motion_trig != trig)
return -EINVAL;
return 0;
static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
"0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600");
+static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326");
+
static struct attribute *kxcjk1013_attributes[] = {
&iio_const_attr_sampling_frequency_available.dev_attr.attr,
+ &iio_const_attr_in_accel_scale_available.dev_attr.attr,
NULL,
};
.attrs = kxcjk1013_attributes,
};
+static const struct iio_event_spec kxcjk1013_event = {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE) |
+ BIT(IIO_EV_INFO_ENABLE) |
+ BIT(IIO_EV_INFO_PERIOD)
+};
+
#define KXCJK1013_CHANNEL(_axis) { \
.type = IIO_ACCEL, \
.modified = 1, \
.shift = 4, \
.endianness = IIO_CPU, \
}, \
+ .event_spec = &kxcjk1013_event, \
+ .num_event_specs = 1 \
}
static const struct iio_chan_spec kxcjk1013_channels[] = {
.attrs = &kxcjk1013_attrs_group,
.read_raw = kxcjk1013_read_raw,
.write_raw = kxcjk1013_write_raw,
+ .read_event_value = kxcjk1013_read_event,
+ .write_event_value = kxcjk1013_write_event,
+ .write_event_config = kxcjk1013_write_event_config,
+ .read_event_config = kxcjk1013_read_event_config,
.validate_trigger = kxcjk1013_validate_trigger,
.driver_module = THIS_MODULE,
};
mutex_unlock(&data->mutex);
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- pf->timestamp);
+ data->timestamp);
err:
iio_trigger_notify_done(indio_dev->trig);
{
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
struct kxcjk1013_data *data = iio_priv(indio_dev);
+ int ret;
mutex_lock(&data->mutex);
- if (state) {
- kxcjk1013_chip_setup_interrupt(data, true);
- kxcjk1013_set_mode(data, OPERATION);
- ++data->power_state;
- } else {
- if (--data->power_state) {
- mutex_unlock(&data->mutex);
- return 0;
- }
- kxcjk1013_chip_setup_interrupt(data, false);
- kxcjk1013_set_mode(data, STANDBY);
+
+ if (!state && data->ev_enable_state && data->motion_trigger_on) {
+ data->motion_trigger_on = false;
+ mutex_unlock(&data->mutex);
+ return 0;
}
+
+ ret = kxcjk1013_set_power_state(data, state);
+ if (ret < 0) {
+ mutex_unlock(&data->mutex);
+ return ret;
+ }
+ if (data->motion_trig == trig)
+ ret = kxcjk1013_setup_any_motion_interrupt(data, state);
+ else
+ ret = kxcjk1013_setup_new_data_interrupt(data, state);
+ if (ret < 0) {
+ mutex_unlock(&data->mutex);
+ return ret;
+ }
+ if (data->motion_trig == trig)
+ data->motion_trigger_on = state;
+ else
+ data->dready_trigger_on = state;
+
mutex_unlock(&data->mutex);
return 0;
.owner = THIS_MODULE,
};
-static int kxcjk1013_acpi_gpio_probe(struct i2c_client *client,
- struct kxcjk1013_data *data)
+static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct kxcjk1013_data *data = iio_priv(indio_dev);
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_SRC1);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_int_src1\n");
+ goto ack_intr;
+ }
+
+ if (ret & 0x02) {
+ ret = i2c_smbus_read_byte_data(data->client,
+ KXCJK1013_REG_INT_SRC2);
+ if (ret < 0) {
+ dev_err(&data->client->dev,
+ "Error reading reg_int_src2\n");
+ goto ack_intr;
+ }
+
+ if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN)
+ iio_push_event(indio_dev,
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_X,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_FALLING),
+ data->timestamp);
+ if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP)
+ iio_push_event(indio_dev,
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_X,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_RISING),
+ data->timestamp);
+
+
+ if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN)
+ iio_push_event(indio_dev,
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_Y,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_FALLING),
+ data->timestamp);
+ if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP)
+ iio_push_event(indio_dev,
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_Y,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_RISING),
+ data->timestamp);
+
+ if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN)
+ iio_push_event(indio_dev,
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_Z,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_FALLING),
+ data->timestamp);
+ if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP)
+ iio_push_event(indio_dev,
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_Z,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_RISING),
+ data->timestamp);
+ }
+
+ack_intr:
+ if (data->dready_trigger_on)
+ return IRQ_HANDLED;
+
+ ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
+ if (ret < 0)
+ dev_err(&data->client->dev, "Error reading reg_int_rel\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct kxcjk1013_data *data = iio_priv(indio_dev);
+
+ data->timestamp = iio_get_time_ns();
+
+ if (data->dready_trigger_on)
+ iio_trigger_poll(data->dready_trig);
+ else if (data->motion_trigger_on)
+ iio_trigger_poll(data->motion_trig);
+
+ if (data->ev_enable_state)
+ return IRQ_WAKE_THREAD;
+ else
+ return IRQ_HANDLED;
+}
+
+static const char *kxcjk1013_match_acpi_device(struct device *dev,
+ enum kx_chipset *chipset)
{
const struct acpi_device_id *id;
+ id = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!id)
+ return NULL;
+ *chipset = (enum kx_chipset)id->driver_data;
+
+ return dev_name(dev);
+}
+
+static int kxcjk1013_gpio_probe(struct i2c_client *client,
+ struct kxcjk1013_data *data)
+{
struct device *dev;
struct gpio_desc *gpio;
int ret;
return -EINVAL;
dev = &client->dev;
- if (!ACPI_HANDLE(dev))
- return -ENODEV;
-
- id = acpi_match_device(dev->driver->acpi_match_table, dev);
- if (!id)
- return -ENODEV;
/* data ready gpio interrupt pin */
gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0);
{
struct kxcjk1013_data *data;
struct iio_dev *indio_dev;
- struct iio_trigger *trig = NULL;
struct kxcjk_1013_platform_data *pdata;
+ const char *name;
int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
else
data->active_high_intr = true; /* default polarity */
+ if (id) {
+ data->chipset = (enum kx_chipset)(id->driver_data);
+ name = id->name;
+ } else if (ACPI_HANDLE(&client->dev)) {
+ name = kxcjk1013_match_acpi_device(&client->dev,
+ &data->chipset);
+ } else
+ return -ENODEV;
+
ret = kxcjk1013_chip_init(data);
if (ret < 0)
return ret;
indio_dev->dev.parent = &client->dev;
indio_dev->channels = kxcjk1013_channels;
indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
- indio_dev->name = KXCJK1013_DRV_NAME;
+ indio_dev->name = name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &kxcjk1013_info;
if (client->irq < 0)
- client->irq = kxcjk1013_acpi_gpio_probe(client, data);
+ client->irq = kxcjk1013_gpio_probe(client, data);
if (client->irq >= 0) {
- trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
- indio_dev->id);
- if (!trig)
- return -ENOMEM;
+ ret = devm_request_threaded_irq(&client->dev, client->irq,
+ kxcjk1013_data_rdy_trig_poll,
+ kxcjk1013_event_handler,
+ IRQF_TRIGGER_RISING,
+ KXCJK1013_IRQ_NAME,
+ indio_dev);
+ if (ret)
+ return ret;
- data->trig_mode = true;
+ data->dready_trig = devm_iio_trigger_alloc(&client->dev,
+ "%s-dev%d",
+ indio_dev->name,
+ indio_dev->id);
+ if (!data->dready_trig)
+ return -ENOMEM;
- ret = devm_request_irq(&client->dev, client->irq,
- iio_trigger_generic_data_rdy_poll,
- IRQF_TRIGGER_RISING,
- KXCJK1013_IRQ_NAME,
- trig);
- if (ret) {
- dev_err(&client->dev, "unable to request IRQ\n");
- goto err_trigger_free;
- }
+ data->motion_trig = devm_iio_trigger_alloc(&client->dev,
+ "%s-any-motion-dev%d",
+ indio_dev->name,
+ indio_dev->id);
+ if (!data->motion_trig)
+ return -ENOMEM;
- trig->dev.parent = &client->dev;
- trig->ops = &kxcjk1013_trigger_ops;
- iio_trigger_set_drvdata(trig, indio_dev);
- data->trig = trig;
- indio_dev->trig = trig;
+ data->dready_trig->dev.parent = &client->dev;
+ data->dready_trig->ops = &kxcjk1013_trigger_ops;
+ iio_trigger_set_drvdata(data->dready_trig, indio_dev);
+ indio_dev->trig = data->dready_trig;
iio_trigger_get(indio_dev->trig);
-
- ret = iio_trigger_register(trig);
+ ret = iio_trigger_register(data->dready_trig);
if (ret)
- goto err_trigger_free;
+ return ret;
+
+ data->motion_trig->dev.parent = &client->dev;
+ data->motion_trig->ops = &kxcjk1013_trigger_ops;
+ iio_trigger_set_drvdata(data->motion_trig, indio_dev);
+ ret = iio_trigger_register(data->motion_trig);
+ if (ret) {
+ data->motion_trig = NULL;
+ goto err_trigger_unregister;
+ }
ret = iio_triggered_buffer_setup(indio_dev,
&iio_pollfunc_store_time,
}
}
- ret = devm_iio_device_register(&client->dev, indio_dev);
+ ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&client->dev, "unable to register iio device\n");
goto err_buffer_cleanup;
}
+ ret = pm_runtime_set_active(&client->dev);
+ if (ret)
+ goto err_iio_unregister;
+
+ pm_runtime_enable(&client->dev);
+ pm_runtime_set_autosuspend_delay(&client->dev,
+ KXCJK1013_SLEEP_DELAY_MS);
+ pm_runtime_use_autosuspend(&client->dev);
+
return 0;
+err_iio_unregister:
+ iio_device_unregister(indio_dev);
err_buffer_cleanup:
- if (data->trig_mode)
+ if (data->dready_trig)
iio_triggered_buffer_cleanup(indio_dev);
err_trigger_unregister:
- if (data->trig_mode)
- iio_trigger_unregister(trig);
-err_trigger_free:
- if (data->trig_mode)
- iio_trigger_free(trig);
+ if (data->dready_trig)
+ iio_trigger_unregister(data->dready_trig);
+ if (data->motion_trig)
+ iio_trigger_unregister(data->motion_trig);
return ret;
}
struct iio_dev *indio_dev = i2c_get_clientdata(client);
struct kxcjk1013_data *data = iio_priv(indio_dev);
- if (data->trig_mode) {
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+ pm_runtime_put_noidle(&client->dev);
+
+ iio_device_unregister(indio_dev);
+
+ if (data->dready_trig) {
iio_triggered_buffer_cleanup(indio_dev);
- iio_trigger_unregister(data->trig);
- iio_trigger_free(data->trig);
+ iio_trigger_unregister(data->dready_trig);
+ iio_trigger_unregister(data->motion_trig);
}
mutex_lock(&data->mutex);
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct kxcjk1013_data *data = iio_priv(indio_dev);
+ int ret;
mutex_lock(&data->mutex);
- kxcjk1013_set_mode(data, STANDBY);
+ ret = kxcjk1013_set_mode(data, STANDBY);
mutex_unlock(&data->mutex);
- return 0;
+ return ret;
}
static int kxcjk1013_resume(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct kxcjk1013_data *data = iio_priv(indio_dev);
+ int ret = 0;
mutex_lock(&data->mutex);
+ /* Check, if the suspend occured while active */
+ if (data->dready_trigger_on || data->motion_trigger_on ||
+ data->ev_enable_state)
+ ret = kxcjk1013_set_mode(data, OPERATION);
+ mutex_unlock(&data->mutex);
- if (data->power_state)
- kxcjk1013_set_mode(data, OPERATION);
+ return ret;
+}
+#endif
- mutex_unlock(&data->mutex);
+#ifdef CONFIG_PM_RUNTIME
+static int kxcjk1013_runtime_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct kxcjk1013_data *data = iio_priv(indio_dev);
- return 0;
+ return kxcjk1013_set_mode(data, STANDBY);
}
-static SIMPLE_DEV_PM_OPS(kxcjk1013_pm_ops, kxcjk1013_suspend, kxcjk1013_resume);
-#define KXCJK1013_PM_OPS (&kxcjk1013_pm_ops)
-#else
-#define KXCJK1013_PM_OPS NULL
+static int kxcjk1013_runtime_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct kxcjk1013_data *data = iio_priv(indio_dev);
+ int ret;
+ int sleep_val;
+
+ ret = kxcjk1013_set_mode(data, OPERATION);
+ if (ret < 0)
+ return ret;
+
+ sleep_val = kxcjk1013_get_startup_times(data);
+ if (sleep_val < 20000)
+ usleep_range(sleep_val, 20000);
+ else
+ msleep_interruptible(sleep_val/1000);
+
+ return 0;
+}
#endif
+static const struct dev_pm_ops kxcjk1013_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume)
+ SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend,
+ kxcjk1013_runtime_resume, NULL)
+};
+
static const struct acpi_device_id kx_acpi_match[] = {
- {"KXCJ1013", 0},
+ {"KXCJ1013", KXCJK1013},
+ {"KXCJ1008", KXCJ91008},
+ {"KXTJ1009", KXTJ21009},
{ },
};
MODULE_DEVICE_TABLE(acpi, kx_acpi_match);
static const struct i2c_device_id kxcjk1013_id[] = {
- {"kxcjk1013", 0},
+ {"kxcjk1013", KXCJK1013},
+ {"kxcj91008", KXCJ91008},
+ {"kxtj21009", KXTJ21009},
{}
};
.driver = {
.name = KXCJK1013_DRV_NAME,
.acpi_match_table = ACPI_PTR(kx_acpi_match),
- .pm = KXCJK1013_PM_OPS,
+ .pm = &kxcjk1013_pm_ops,
},
.probe = kxcjk1013_probe,
.remove = kxcjk1013_remove,
projects / cascardo / linux.git / blobdiff