staging:iio: Add support for multiple buffers

Route all buffer writes through the demux.
Addition or removal of a buffer results in tear down and
setup of all the buffers for a given device.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Tested-by: srinivas pandruvada <srinivas.pandruvada@intel.com>

5 files changed, 5 insertions, 7 deletions

diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index b11f214779a2..a6f4fc5f8201 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -91,7 +91,6 @@ static irqreturn_t ad7266_trigger_handler(int irq, void *p)
 {
         struct iio_poll_func *pf = p;
         struct iio_dev *indio_dev = pf->indio_dev;
-        struct iio_buffer *buffer = indio_dev->buffer;
         struct ad7266_state *st = iio_priv(indio_dev);
         int ret;
 
@@ -99,7 +98,7 @@ static irqreturn_t ad7266_trigger_handler(int irq, void *p)
         if (ret == 0) {
                 if (indio_dev->scan_timestamp)
                         ((s64 *)st->data)[1] = pf->timestamp;
-                iio_push_to_buffer(buffer, (u8 *)st->data);
+                iio_push_to_buffers(indio_dev, (u8 *)st->data);
         }
 
         iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index 7f2f45a0a48d..330248bfebae 100644
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -76,7 +76,7 @@ static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
         if (indio_dev->scan_timestamp)
                 ((s64 *)st->data)[1] = time_ns;
 
-        iio_push_to_buffer(indio_dev->buffer, st->data);
+        iio_push_to_buffers(indio_dev, st->data);
 done:
         iio_trigger_notify_done(indio_dev->trig);
 
diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
index fd62309b4d3d..81153fafac7a 100644
--- a/drivers/iio/adc/ad7887.c
+++ b/drivers/iio/adc/ad7887.c
@@ -134,7 +134,7 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
                 memcpy(st->data + indio_dev->scan_bytes - sizeof(s64),
                        &time_ns, sizeof(time_ns));
 
-        iio_push_to_buffer(indio_dev->buffer, st->data);
+        iio_push_to_buffers(indio_dev, st->data);
 done:
         iio_trigger_notify_done(indio_dev->trig);
 
diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index 67baa1363d7a..afe6d78c8ff0 100644
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -391,7 +391,7 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
                 break;
         }
 
-        iio_push_to_buffer(indio_dev->buffer, (uint8_t *)data);
+        iio_push_to_buffers(indio_dev, (uint8_t *)data);
 
         iio_trigger_notify_done(indio_dev->trig);
         sigma_delta->irq_dis = false;
diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index 2e2c9a80aa37..03b85940f4ba 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -65,7 +65,6 @@ static irqreturn_t at91_adc_trigger_handler(int irq, void *p)
         struct iio_poll_func *pf = p;
         struct iio_dev *idev = pf->indio_dev;
         struct at91_adc_state *st = iio_priv(idev);
-        struct iio_buffer *buffer = idev->buffer;
         int i, j = 0;
 
         for (i = 0; i < idev->masklength; i++) {
@@ -81,7 +80,7 @@ static irqreturn_t at91_adc_trigger_handler(int irq, void *p)
                 *timestamp = pf->timestamp;
         }
 
-        iio_push_to_buffer(buffer, st->buffer);
+        iio_push_to_buffers(indio_dev, (u8 *)st->buffer);
 
         iio_trigger_notify_done(idev->trig);