staging:iio:adc:ad7793: Use new triggered buffer setup helper function

Use the new triggered buffer setup helper function to allocate and register
buffer and pollfunc.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index ca46627502494efe8b13dcdf73e48b9e54a53df7..4fcc4be044eaa226edd81720f4ea0b728a09c11a 100644 (file)
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -112,8 +112,7 @@ config AD7793
        tristate "Analog Devices AD7792 AD7793 ADC driver"
        depends on SPI
        select IIO_BUFFER
-       select IIO_KFIFO_BUF
-       select IIO_TRIGGER
+       select IIO_TRIGGERED_BUFFER
        help
          Say yes here to build support for Analog Devices
          AD7792 and AD7793 SPI analog to digital converters (ADC).

diff --git a/drivers/staging/iio/adc/ad7793.c b/drivers/staging/iio/adc/ad7793.c
index b36556fa2957affa75852efaaedda9bfdd6eb755..2bb9f68d66a45a9ab6142c367f8ac0510196e2a0 100644 (file)
--- a/drivers/staging/iio/adc/ad7793.c
+++ b/drivers/staging/iio/adc/ad7793.c
@@ -21,9 +21,9 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/kfifo_buf.h>
 #include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 
 #include "ad7793.h"
 
@@ -407,41 +407,13 @@ static const struct iio_buffer_setup_ops ad7793_ring_setup_ops = {
 
 static int ad7793_register_ring_funcs_and_init(struct iio_dev *indio_dev)
 {
-       int ret;
-
-       indio_dev->buffer = iio_kfifo_allocate(indio_dev);
-       if (!indio_dev->buffer) {
-               ret = -ENOMEM;
-               goto error_ret;
-       }
-       indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
-                                                &ad7793_trigger_handler,
-                                                IRQF_ONESHOT,
-                                                indio_dev,
-                                                "ad7793_consumer%d",
-                                                indio_dev->id);
-       if (indio_dev->pollfunc == NULL) {
-               ret = -ENOMEM;
-               goto error_deallocate_kfifo;
-       }
-
-       /* Ring buffer functions - here trigger setup related */
-       indio_dev->setup_ops = &ad7793_ring_setup_ops;
-
-       /* Flag that polled ring buffering is possible */
-       indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
-       return 0;
-
-error_deallocate_kfifo:
-       iio_kfifo_free(indio_dev->buffer);
-error_ret:
-       return ret;
+       return iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+                       &ad7793_trigger_handler, &ad7793_ring_setup_ops);
 }
 
 static void ad7793_ring_cleanup(struct iio_dev *indio_dev)
 {
-       iio_dealloc_pollfunc(indio_dev->pollfunc);
-       iio_kfifo_free(indio_dev->buffer);
+       iio_triggered_buffer_cleanup(indio_dev);
 }
 
 /**
@@ -959,24 +931,16 @@ static int __devinit ad7793_probe(struct spi_device *spi)
        if (ret)
                goto error_unreg_ring;
 
-       ret = iio_buffer_register(indio_dev,
-                                 indio_dev->channels,
-                                 indio_dev->num_channels);
-       if (ret)
-               goto error_remove_trigger;
-
        ret = ad7793_setup(st);
        if (ret)
-               goto error_uninitialize_ring;
+               goto error_remove_trigger;
 
        ret = iio_device_register(indio_dev);
        if (ret)
-               goto error_uninitialize_ring;
+               goto error_remove_trigger;
 
        return 0;
 
-error_uninitialize_ring:
-       iio_buffer_unregister(indio_dev);
 error_remove_trigger:
        ad7793_remove_trigger(indio_dev);
 error_unreg_ring:
@@ -999,7 +963,6 @@ static int ad7793_remove(struct spi_device *spi)
        struct ad7793_state *st = iio_priv(indio_dev);
 
        iio_device_unregister(indio_dev);
-       iio_buffer_unregister(indio_dev);
        ad7793_remove_trigger(indio_dev);
        ad7793_ring_cleanup(indio_dev);