diff options
Diffstat (limited to 'drivers/staging/iio/adc/ad799x_ring.c')
-rw-r--r-- | drivers/staging/iio/adc/ad799x_ring.c | 44 |
1 files changed, 14 insertions, 30 deletions
diff --git a/drivers/staging/iio/adc/ad799x_ring.c b/drivers/staging/iio/adc/ad799x_ring.c index 069765cab275..1c7ff4423db4 100644 --- a/drivers/staging/iio/adc/ad799x_ring.c +++ b/drivers/staging/iio/adc/ad799x_ring.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2010 Michael Hennerich, Analog Devices Inc. + * Copyright (C) 2010-2012 Michael Hennerich, Analog Devices Inc. * Copyright (C) 2008-2010 Jonathan Cameron * * This program is free software; you can redistribute it and/or modify @@ -16,10 +16,10 @@ #include <linux/i2c.h> #include <linux/bitops.h> -#include "../iio.h" -#include "../buffer.h" -#include "../ring_sw.h" -#include "../trigger_consumer.h" +#include <linux/iio/iio.h> +#include <linux/iio/buffer.h> +#include <linux/iio/kfifo_buf.h> +#include <linux/iio/trigger_consumer.h> #include "ad799x.h" @@ -32,9 +32,7 @@ **/ static int ad799x_ring_preenable(struct iio_dev *indio_dev) { - struct iio_buffer *ring = indio_dev->buffer; struct ad799x_state *st = iio_priv(indio_dev); - /* * Need to figure out the current mode based upon the requested * scan mask in iio_dev @@ -43,21 +41,7 @@ static int ad799x_ring_preenable(struct iio_dev *indio_dev) if (st->id == ad7997 || st->id == ad7998) ad7997_8_set_scan_mode(st, *indio_dev->active_scan_mask); - st->d_size = bitmap_weight(indio_dev->active_scan_mask, - indio_dev->masklength) * 2; - - if (ring->scan_timestamp) { - st->d_size += sizeof(s64); - - if (st->d_size % sizeof(s64)) - st->d_size += sizeof(s64) - (st->d_size % sizeof(s64)); - } - - if (indio_dev->buffer->access->set_bytes_per_datum) - indio_dev->buffer->access-> - set_bytes_per_datum(indio_dev->buffer, st->d_size); - - return 0; + return iio_sw_buffer_preenable(indio_dev); } /** @@ -78,7 +62,7 @@ static irqreturn_t ad799x_trigger_handler(int irq, void *p) int b_sent; u8 cmd; - rxbuf = kmalloc(st->d_size, GFP_KERNEL); + rxbuf = kmalloc(indio_dev->scan_bytes, GFP_KERNEL); if (rxbuf == NULL) goto out; @@ -111,8 +95,8 @@ static irqreturn_t ad799x_trigger_handler(int irq, void *p) time_ns = iio_get_time_ns(); - if (ring->scan_timestamp) - memcpy(rxbuf + st->d_size - sizeof(s64), + if (indio_dev->scan_timestamp) + memcpy(rxbuf + indio_dev->scan_bytes - sizeof(s64), &time_ns, sizeof(time_ns)); ring->access->store_to(indio_dev->buffer, rxbuf, time_ns); @@ -136,7 +120,7 @@ int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev) { int ret = 0; - indio_dev->buffer = iio_sw_rb_allocate(indio_dev); + indio_dev->buffer = iio_kfifo_allocate(indio_dev); if (!indio_dev->buffer) { ret = -ENOMEM; goto error_ret; @@ -150,7 +134,7 @@ int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev) indio_dev->id); if (indio_dev->pollfunc == NULL) { ret = -ENOMEM; - goto error_deallocate_sw_rb; + goto error_deallocate_kfifo; } /* Ring buffer functions - here trigger setup related */ @@ -161,8 +145,8 @@ int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev) indio_dev->modes |= INDIO_BUFFER_TRIGGERED; return 0; -error_deallocate_sw_rb: - iio_sw_rb_free(indio_dev->buffer); +error_deallocate_kfifo: + iio_kfifo_free(indio_dev->buffer); error_ret: return ret; } @@ -170,5 +154,5 @@ error_ret: void ad799x_ring_cleanup(struct iio_dev *indio_dev) { iio_dealloc_pollfunc(indio_dev->pollfunc); - iio_sw_rb_free(indio_dev->buffer); + iio_kfifo_free(indio_dev->buffer); } |