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Diffstat (limited to 'drivers/staging/iio/imu/adis16400_ring.c')
-rw-r--r--drivers/staging/iio/imu/adis16400_ring.c160
1 files changed, 39 insertions, 121 deletions
diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c
index da28cb4288af..f5b9bb8f65e0 100644
--- a/drivers/staging/iio/imu/adis16400_ring.c
+++ b/drivers/staging/iio/imu/adis16400_ring.c
@@ -17,93 +17,6 @@
#include "../trigger.h"
#include "adis16400.h"
-static IIO_SCAN_EL_C(in0_supply, ADIS16400_SCAN_SUPPLY,
- ADIS16400_SUPPLY_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(in0_supply, u, 14, 16);
-
-static IIO_SCAN_EL_C(gyro_x, ADIS16400_SCAN_GYRO_X, ADIS16400_XGYRO_OUT, NULL);
-static IIO_SCAN_EL_C(gyro_y, ADIS16400_SCAN_GYRO_Y, ADIS16400_YGYRO_OUT, NULL);
-static IIO_SCAN_EL_C(gyro_z, ADIS16400_SCAN_GYRO_Z, ADIS16400_ZGYRO_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(gyro, s, 14, 16);
-
-static IIO_SCAN_EL_C(accel_x, ADIS16400_SCAN_ACC_X, ADIS16400_XACCL_OUT, NULL);
-static IIO_SCAN_EL_C(accel_y, ADIS16400_SCAN_ACC_Y, ADIS16400_YACCL_OUT, NULL);
-static IIO_SCAN_EL_C(accel_z, ADIS16400_SCAN_ACC_Z, ADIS16400_ZACCL_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(accel, s, 14, 16);
-
-static IIO_SCAN_EL_C(magn_x, ADIS16400_SCAN_MAGN_X, ADIS16400_XMAGN_OUT, NULL);
-static IIO_SCAN_EL_C(magn_y, ADIS16400_SCAN_MAGN_Y, ADIS16400_YMAGN_OUT, NULL);
-static IIO_SCAN_EL_C(magn_z, ADIS16400_SCAN_MAGN_Z, ADIS16400_ZMAGN_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(magn, s, 14, 16);
-
-static IIO_SCAN_EL_C(temp, ADIS16400_SCAN_TEMP, ADIS16400_TEMP_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(temp, s, 12, 16);
-
-static IIO_SCAN_EL_C(in1, ADIS16400_SCAN_ADC_0, ADIS16400_AUX_ADC, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(in1, u, 12, 16);
-
-static IIO_SCAN_EL_TIMESTAMP(12);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(timestamp, s, 64, 64);
-
-static struct attribute *adis16400_scan_el_attrs[] = {
- &iio_scan_el_in0_supply.dev_attr.attr,
- &iio_const_attr_in0_supply_index.dev_attr.attr,
- &iio_const_attr_in0_supply_type.dev_attr.attr,
- &iio_scan_el_gyro_x.dev_attr.attr,
- &iio_const_attr_gyro_x_index.dev_attr.attr,
- &iio_scan_el_gyro_y.dev_attr.attr,
- &iio_const_attr_gyro_y_index.dev_attr.attr,
- &iio_scan_el_gyro_z.dev_attr.attr,
- &iio_const_attr_gyro_z_index.dev_attr.attr,
- &iio_const_attr_gyro_type.dev_attr.attr,
- &iio_scan_el_accel_x.dev_attr.attr,
- &iio_const_attr_accel_x_index.dev_attr.attr,
- &iio_scan_el_accel_y.dev_attr.attr,
- &iio_const_attr_accel_y_index.dev_attr.attr,
- &iio_scan_el_accel_z.dev_attr.attr,
- &iio_const_attr_accel_z_index.dev_attr.attr,
- &iio_const_attr_accel_type.dev_attr.attr,
- &iio_scan_el_magn_x.dev_attr.attr,
- &iio_const_attr_magn_x_index.dev_attr.attr,
- &iio_scan_el_magn_y.dev_attr.attr,
- &iio_const_attr_magn_y_index.dev_attr.attr,
- &iio_scan_el_magn_z.dev_attr.attr,
- &iio_const_attr_magn_z_index.dev_attr.attr,
- &iio_const_attr_magn_type.dev_attr.attr,
- &iio_scan_el_temp.dev_attr.attr,
- &iio_const_attr_temp_index.dev_attr.attr,
- &iio_const_attr_temp_type.dev_attr.attr,
- &iio_scan_el_in1.dev_attr.attr,
- &iio_const_attr_in1_index.dev_attr.attr,
- &iio_const_attr_in1_type.dev_attr.attr,
- &iio_scan_el_timestamp.dev_attr.attr,
- &iio_const_attr_timestamp_index.dev_attr.attr,
- &iio_const_attr_timestamp_type.dev_attr.attr,
- NULL,
-};
-
-static struct attribute_group adis16400_scan_el_group = {
- .attrs = adis16400_scan_el_attrs,
- .name = "scan_elements",
-};
-
-/**
- * adis16400_poll_func_th() top half interrupt handler called by trigger
- * @private_data: iio_dev
- **/
-static void adis16400_poll_func_th(struct iio_dev *indio_dev, s64 time)
-{
- struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
- st->last_timestamp = time;
- schedule_work(&st->work_trigger_to_ring);
- /* Indicate that this interrupt is being handled */
-
- /* Technically this is trigger related, but without this
- * handler running there is currently no way for the interrupt
- * to clear.
- */
-}
-
/**
* adis16400_spi_read_burst() - read all data registers
* @dev: device associated with child of actual device (iio_dev or iio_trig)
@@ -153,13 +66,12 @@ static int adis16400_spi_read_burst(struct device *dev, u8 *rx)
/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
* specific to be rolled into the core.
*/
-static void adis16400_trigger_bh_to_ring(struct work_struct *work_s)
+static irqreturn_t adis16400_trigger_handler(int irq, void *p)
{
- struct adis16400_state *st
- = container_of(work_s, struct adis16400_state,
- work_trigger_to_ring);
- struct iio_ring_buffer *ring = st->indio_dev->ring;
-
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->private_data;
+ struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
+ struct iio_ring_buffer *ring = indio_dev->ring;
int i = 0, j;
s16 *data;
size_t datasize = ring->access.get_bytes_per_datum(ring);
@@ -168,11 +80,11 @@ static void adis16400_trigger_bh_to_ring(struct work_struct *work_s)
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
dev_err(&st->us->dev, "memory alloc failed in ring bh");
- return;
+ return -ENOMEM;
}
if (ring->scan_count)
- if (adis16400_spi_read_burst(&st->indio_dev->dev, st->rx) >= 0)
+ if (adis16400_spi_read_burst(&indio_dev->dev, st->rx) >= 0)
for (; i < ring->scan_count; i++) {
j = __ffs(mask);
mask &= ~(1 << j);
@@ -182,20 +94,18 @@ static void adis16400_trigger_bh_to_ring(struct work_struct *work_s)
/* Guaranteed to be aligned with 8 byte boundary */
if (ring->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = st->last_timestamp;
-
- ring->access.store_to(ring,
- (u8 *) data,
- st->last_timestamp);
+ *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
+ ring->access.store_to(indio_dev->ring, (u8 *) data, pf->timestamp);
- iio_trigger_notify_done(st->indio_dev->trig);
+ iio_trigger_notify_done(indio_dev->trig);
kfree(data);
- return;
+ return IRQ_HANDLED;
}
void adis16400_unconfigure_ring(struct iio_dev *indio_dev)
{
+ kfree(indio_dev->pollfunc->name);
kfree(indio_dev->pollfunc);
iio_sw_rb_free(indio_dev->ring);
}
@@ -203,9 +113,7 @@ void adis16400_unconfigure_ring(struct iio_dev *indio_dev)
int adis16400_configure_ring(struct iio_dev *indio_dev)
{
int ret = 0;
- struct adis16400_state *st = indio_dev->dev_data;
struct iio_ring_buffer *ring;
- INIT_WORK(&st->work_trigger_to_ring, adis16400_trigger_bh_to_ring);
ring = iio_sw_rb_allocate(indio_dev);
if (!ring) {
@@ -216,7 +124,6 @@ int adis16400_configure_ring(struct iio_dev *indio_dev)
/* Effectively select the ring buffer implementation */
iio_ring_sw_register_funcs(&ring->access);
ring->bpe = 2;
- ring->scan_el_attrs = &adis16400_scan_el_group;
ring->scan_timestamp = true;
ring->preenable = &iio_sw_ring_preenable;
ring->postenable = &iio_triggered_ring_postenable;
@@ -224,26 +131,37 @@ int adis16400_configure_ring(struct iio_dev *indio_dev)
ring->owner = THIS_MODULE;
/* Set default scan mode */
- iio_scan_mask_set(ring, iio_scan_el_in0_supply.number);
- iio_scan_mask_set(ring, iio_scan_el_gyro_x.number);
- iio_scan_mask_set(ring, iio_scan_el_gyro_y.number);
- iio_scan_mask_set(ring, iio_scan_el_gyro_z.number);
- iio_scan_mask_set(ring, iio_scan_el_accel_x.number);
- iio_scan_mask_set(ring, iio_scan_el_accel_y.number);
- iio_scan_mask_set(ring, iio_scan_el_accel_z.number);
- iio_scan_mask_set(ring, iio_scan_el_magn_x.number);
- iio_scan_mask_set(ring, iio_scan_el_magn_y.number);
- iio_scan_mask_set(ring, iio_scan_el_magn_z.number);
- iio_scan_mask_set(ring, iio_scan_el_temp.number);
- iio_scan_mask_set(ring, iio_scan_el_in1.number);
-
- ret = iio_alloc_pollfunc(indio_dev, NULL, &adis16400_poll_func_th);
- if (ret)
+ iio_scan_mask_set(ring, ADIS16400_SCAN_SUPPLY);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_GYRO_X);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_GYRO_Y);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_GYRO_Z);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_ACC_X);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_ACC_Y);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_ACC_Z);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_MAGN_X);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_MAGN_Y);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_MAGN_Z);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_TEMP);
+ iio_scan_mask_set(ring, ADIS16400_SCAN_ADC_0);
+
+ indio_dev->pollfunc = kzalloc(sizeof(*indio_dev->pollfunc), GFP_KERNEL);
+ if (indio_dev->pollfunc == NULL) {
+ ret = -ENOMEM;
goto error_iio_sw_rb_free;
+ }
+ indio_dev->pollfunc->private_data = indio_dev;
+ indio_dev->pollfunc->h = &iio_pollfunc_store_time;
+ indio_dev->pollfunc->thread = &adis16400_trigger_handler;
+ indio_dev->pollfunc->type = IRQF_ONESHOT;
+ indio_dev->pollfunc->name =
+ kasprintf(GFP_KERNEL, "adis16400_consumer%d", indio_dev->id);
+ if (ret)
+ goto error_iio_free_pollfunc;
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
-
+error_iio_free_pollfunc:
+ kfree(indio_dev->pollfunc);
error_iio_sw_rb_free:
iio_sw_rb_free(indio_dev->ring);
return ret;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-19 21:03:36 +0200