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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-22 16:34:21 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-22 16:34:21 -0700 |
commit | fb09bafda67041b74a668dc9d77735e36bd33d3b (patch) | |
tree | 2dd32b65062a95045468fdcab366ecdb8e4fcac6 /drivers/staging/iio/adc/ad7476_ring.c | |
parent | Merge tag 'tty-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty (diff) | |
parent | Staging: bcm: Remove two unused variables from Adapter.h (diff) | |
download | linux-dev-fb09bafda67041b74a668dc9d77735e36bd33d3b.tar.xz linux-dev-fb09bafda67041b74a668dc9d77735e36bd33d3b.zip |
Merge tag 'staging-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree changes from Greg Kroah-Hartman:
"Here is the big staging tree pull request for the 3.5-rc1 merge
window.
Loads of changes here, and we just narrowly added more lines than we
added:
622 files changed, 28356 insertions(+), 26059 deletions(-)
But, good news is that there is a number of subsystems that moved out
of the staging tree, to their respective "real" portions of the
kernel.
Code that moved out was:
- iio core code
- mei driver
- vme core and bridge drivers
There was one broken network driver that moved into staging as a step
before it is removed from the tree (pc300), and there was a few new
drivers added to the tree:
- new iio drivers
- gdm72xx wimax USB driver
- ipack subsystem and 2 drivers
All of the movements around have acks from the various subsystem
maintainers, and all of this has been in the linux-next tree for a
while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fixed up various trivial conflicts, along with a non-trivial one found
in -next and pointed out by Olof Johanssen: a clean - but incorrect -
merge of the arch/arm/boot/dts/at91sam9g20.dtsi file. Fix up manually
as per Stephen Rothwell.
* tag 'staging-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (536 commits)
Staging: bcm: Remove two unused variables from Adapter.h
Staging: bcm: Removes the volatile type definition from Adapter.h
Staging: bcm: Rename all "INT" to "int" in Adapter.h
Staging: bcm: Fix warning: __packed vs. __attribute__((packed)) in Adapter.h
Staging: bcm: Correctly format all comments in Adapter.h
Staging: bcm: Fix all whitespace issues in Adapter.h
Staging: bcm: Properly format braces in Adapter.h
Staging: ipack/bridges/tpci200: remove unneeded casts
Staging: ipack/bridges/tpci200: remove TPCI200_SHORTNAME constant
Staging: ipack: remove board_name and bus_name fields from struct ipack_device
Staging: ipack: improve the register of a bus and a device in the bus.
staging: comedi: cleanup all the comedi_driver 'detach' functions
staging: comedi: remove all 'default N' in Kconfig
staging: line6/config.h: Delete unused header
staging: gdm72xx depends on NET
staging: gdm72xx: Set up parent link in sysfs for gdm72xx devices
staging: drm/omap: initial dmabuf/prime import support
staging: drm/omap: dmabuf/prime mmap support
pstore/ram: Add ECC support
pstore/ram: Switch to persistent_ram routines
...
Diffstat (limited to 'drivers/staging/iio/adc/ad7476_ring.c')
-rw-r--r-- | drivers/staging/iio/adc/ad7476_ring.c | 58 |
1 files changed, 14 insertions, 44 deletions
diff --git a/drivers/staging/iio/adc/ad7476_ring.c b/drivers/staging/iio/adc/ad7476_ring.c index d6af6c05ce1c..383611b05764 100644 --- a/drivers/staging/iio/adc/ad7476_ring.c +++ b/drivers/staging/iio/adc/ad7476_ring.c @@ -1,5 +1,5 @@ /* - * Copyright 2010 Analog Devices Inc. + * Copyright 2010-2012 Analog Devices Inc. * Copyright (C) 2008 Jonathan Cameron * * Licensed under the GPL-2 or later. @@ -13,43 +13,13 @@ #include <linux/slab.h> #include <linux/spi/spi.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 "ad7476.h" -/** - * ad7476_ring_preenable() setup the parameters of the ring before enabling - * - * The complex nature of the setting of the number of bytes per datum is due - * to this driver currently ensuring that the timestamp is stored at an 8 - * byte boundary. - **/ -static int ad7476_ring_preenable(struct iio_dev *indio_dev) -{ - struct ad7476_state *st = iio_priv(indio_dev); - struct iio_buffer *ring = indio_dev->buffer; - - st->d_size = bitmap_weight(indio_dev->active_scan_mask, - indio_dev->masklength) * - st->chip_info->channel[0].scan_type.storagebits / 8; - - 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; -} - static irqreturn_t ad7476_trigger_handler(int irq, void *p) { struct iio_poll_func *pf = p; @@ -59,7 +29,7 @@ static irqreturn_t ad7476_trigger_handler(int irq, void *p) __u8 *rxbuf; int b_sent; - rxbuf = kzalloc(st->d_size, GFP_KERNEL); + rxbuf = kzalloc(indio_dev->scan_bytes, GFP_KERNEL); if (rxbuf == NULL) return -ENOMEM; @@ -70,8 +40,8 @@ static irqreturn_t ad7476_trigger_handler(int irq, void *p) time_ns = iio_get_time_ns(); - if (indio_dev->buffer->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)); indio_dev->buffer->access->store_to(indio_dev->buffer, rxbuf, time_ns); @@ -83,7 +53,7 @@ done: } static const struct iio_buffer_setup_ops ad7476_ring_setup_ops = { - .preenable = &ad7476_ring_preenable, + .preenable = &iio_sw_buffer_preenable, .postenable = &iio_triggered_buffer_postenable, .predisable = &iio_triggered_buffer_predisable, }; @@ -93,7 +63,7 @@ int ad7476_register_ring_funcs_and_init(struct iio_dev *indio_dev) struct ad7476_state *st = iio_priv(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; @@ -108,7 +78,7 @@ int ad7476_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 */ @@ -119,8 +89,8 @@ int ad7476_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; } @@ -128,5 +98,5 @@ error_ret: void ad7476_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); } |