Untested.
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxx>
---
drivers/staging/iio/accel/adis16201.h | 5 --
drivers/staging/iio/accel/adis16201_ring.c | 51 +++++++++++++------------
drivers/staging/iio/accel/adis16201_trigger.c | 49 +++++++-----------------
3 files changed, 40 insertions(+), 65 deletions(-)
diff --git a/drivers/staging/iio/accel/adis16201.h b/drivers/staging/iio/accel/adis16201.h
index 23fe54d..6296a4f 100644
--- a/drivers/staging/iio/accel/adis16201.h
+++ b/drivers/staging/iio/accel/adis16201.h
@@ -64,9 +64,6 @@
/**
* struct adis16201_state - device instance specific data
* @us: actual spi_device
- * @work_trigger_to_ring: bh for triggered event handling
- * @inter: used to check if new interrupt has been triggered
- * @last_timestamp: passing timestamp from th to bh of interrupt handler
* @indio_dev: industrial I/O device structure
* @trig: data ready trigger registered with iio
* @tx: transmit buffer
@@ -75,8 +72,6 @@
**/
struct adis16201_state {
struct spi_device *us;
- struct work_struct work_trigger_to_ring;
- s64 last_timestamp;
struct iio_dev *indio_dev;
struct iio_trigger *trig;
u8 *tx;
diff --git a/drivers/staging/iio/accel/adis16201_ring.c b/drivers/staging/iio/accel/adis16201_ring.c
index e6870a2..d0998b2 100644
--- a/drivers/staging/iio/accel/adis16201_ring.c
+++ b/drivers/staging/iio/accel/adis16201_ring.c
@@ -66,17 +66,6 @@ static struct attribute_group adis16201_scan_el_group = {
};
/**
- * adis16201_poll_func_th() top half interrupt handler called by trigger
- * @private_data: iio_dev
- **/
-static void adis16201_poll_func_th(struct iio_dev *indio_dev, s64 time)
-{
- struct adis16201_state *st = iio_dev_get_devdata(indio_dev);
- st->last_timestamp = time;
- schedule_work(&st->work_trigger_to_ring);
-}
-
-/**
* adis16201_read_ring_data() read data registers which will be placed into ring
* @dev: device associated with child of actual device (iio_dev or iio_trig)
* @rx: somewhere to pass back the value read
@@ -120,12 +109,12 @@ static int adis16201_read_ring_data(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 adis16201_trigger_bh_to_ring(struct work_struct *work_s)
+static irqreturn_t adis16201_trigger_handler(int irq, void *p)
{
- struct adis16201_state *st
- = container_of(work_s, struct adis16201_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 adis16201_state *st = iio_dev_get_devdata(indio_dev);
+ struct iio_ring_buffer *ring = indio_dev->ring;
int i = 0;
s16 *data;
@@ -134,7 +123,7 @@ static void adis16201_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)
@@ -145,20 +134,21 @@ static void adis16201_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;
+ *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
ring->access.store_to(ring,
(u8 *)data,
- st->last_timestamp);
+ pf->timestamp);
iio_trigger_notify_done(st->indio_dev->trig);
kfree(data);
- return;
+ return IRQ_HANDLED;
}
void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
{
+ kfree(indio_dev->pollfunc->name);
kfree(indio_dev->pollfunc);
iio_sw_rb_free(indio_dev->ring);
}
@@ -166,9 +156,7 @@ void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
int adis16201_configure_ring(struct iio_dev *indio_dev)
{
int ret = 0;
- struct adis16201_state *st = indio_dev->dev_data;
struct iio_ring_buffer *ring;
- INIT_WORK(&st->work_trigger_to_ring, adis16201_trigger_bh_to_ring);
ring = iio_sw_rb_allocate(indio_dev);
if (!ring) {
@@ -195,13 +183,26 @@ int adis16201_configure_ring(struct iio_dev *indio_dev)
iio_scan_mask_set(ring, iio_scan_el_incli_x.number);
iio_scan_mask_set(ring, iio_scan_el_incli_y.number);
- ret = iio_alloc_pollfunc(indio_dev, NULL, &adis16201_poll_func_th);
- if (ret)
+ 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 = &adis16201_trigger_handler;
+ indio_dev->pollfunc->type = IRQF_ONESHOT;
+ indio_dev->pollfunc->name =
+ kasprintf(GFP_KERNEL, "adis16201_consumer%d", indio_dev->id);
+ if (indio_dev->pollfunc->name == NULL) {
+ ret = -ENOMEM;
+ goto error_free_poll_func;
+ }
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
-
+error_free_poll_func:
+ kfree(indio_dev->pollfunc);
error_iio_sw_rb_free:
iio_sw_rb_free(indio_dev->ring);
return ret;
diff --git a/drivers/staging/iio/accel/adis16201_trigger.c b/drivers/staging/iio/accel/adis16201_trigger.c
index 8a48bdd..a4fb410 100644
--- a/drivers/staging/iio/accel/adis16201_trigger.c
+++ b/drivers/staging/iio/accel/adis16201_trigger.c
@@ -12,16 +12,6 @@
#include "../trigger.h"
#include "adis16201.h"
-/**
- * adis16201_data_rdy_trig_poll() the event handler for the data rdy trig
- **/
-static irqreturn_t adis16201_data_rdy_trig_poll(int irq, void *private)
-{
- disable_irq_nosync(irq);
- iio_trigger_poll(private, iio_get_time_ns());
- return IRQ_HANDLED;
-}
-
static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
static struct attribute *adis16201_trigger_attrs[] = {
@@ -46,62 +36,51 @@ static int adis16201_data_rdy_trigger_set_state(struct iio_trigger *trig,
return adis16201_set_irq(&st->indio_dev->dev, state);
}
-/**
- * adis16201_trig_try_reen() try renabling irq for data rdy trigger
- * @trig: the datardy trigger
- **/
-static int adis16201_trig_try_reen(struct iio_trigger *trig)
-{
- struct adis16201_state *st = trig->private_data;
- enable_irq(st->us->irq);
- return 0;
-}
-
int adis16201_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16201_state *st = indio_dev->dev_data;
+ char *name;
- st->trig = iio_allocate_trigger();
- if (st->trig == NULL) {
+ name = kasprintf(GFP_KERNEL,
+ "adis16201-dev%d",
+ indio_dev->id);
+ if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
+ st->trig = iio_allocate_trigger_named(name);
+ if (st->trig == NULL) {
+ ret = -ENOMEM;
+ goto error_free_name;
+ }
ret = request_irq(st->us->irq,
- adis16201_data_rdy_trig_poll,
+ &iio_trigger_generic_data_rdy_poll,
IRQF_TRIGGER_RISING,
"adis16201",
st->trig);
if (ret)
goto error_free_trig;
- st->trig->name = kasprintf(GFP_KERNEL,
- "adis16201-dev%d",
- indio_dev->id);
- if (!st->trig->name) {
- ret = -ENOMEM;
- goto error_free_irq;
- }
st->trig->dev.parent = &st->us->dev;
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16201_data_rdy_trigger_set_state;
- st->trig->try_reenable = &adis16201_trig_try_reen;
st->trig->control_attrs = &adis16201_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
indio_dev->trig = st->trig;
if (ret)
- goto error_free_trig_name;
+ goto error_free_irq;
return 0;
-error_free_trig_name:
- kfree(st->trig->name);
error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
+error_free_name:
+ kfree(name);
error_ret:
return ret;
}
--
1.7.3.4
--
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