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Commit Graph

907 Commits

Author SHA1 Message Date
Jonathan Cameron
8f9cde23c3 staging:iio:adc:adt7310/7410 sticking plaster fix for broken event attrs.
Neither of these drivers has ever been anywhere near the iio abi.
Probably as a result of this the fact they had two event groups
each was not picked up when we restricted IIO to having only
1 event line per device (as part of the chrdev merge set).

As such these definitely didn't work before.  This patch squishes
the only element from the 'comparator' event line that isn't in the
'interrupt' one into it and kills off the 'comparator' one.

Ultimately both of these drivers belong in hwmon not IIO and are just
waiting here because I don't want to kill off a driver that may
prove useful to someone.  (Ultimately I will ask Greg to scrap
these two if no one steps up to deal with them.)

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 10:06:06 -08:00
Jonathan Cameron
9214cc6e13 staging:iio:adc:ad7606 unwind use of is_visible for attrs.
This is the most controversial of this set of is_visible removals.
There are two conditions controlling availability of attrs resulting
in 4 different attribute groups.

Still for a few more lines things are clearer to read to my mind.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 10:06:05 -08:00
Jonathan Cameron
7389266cc9 staging:iio:dac:ad5446 unwind use of is_visible for attrs.
Trivial case where no attributes are valid for some parts. Better
handled using two iio_info structures and selecting the right one
at probe time.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 10:06:05 -08:00
Jonathan Cameron
b2c04a34aa staging:iio:dds:ad9834 unwind use of is_visible for attrs.
Trivial usecase in which just having two different attr
groups covers all options.  Slightly more code, but a simpler
to follow result.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 10:06:05 -08:00
Jonathan Cameron
15bbb7793a staging:iio:adc:ad7192 unwind use of is_visible for attribute group.
It saves a couple of lines of code but reduces simplicity of code.
I generally wish to discourage use of is_visible throughout IIO.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 10:06:04 -08:00
Lars-Peter Clausen
a046c1e866 staging:iio:events: Use non-atmoic bitops
We always hold the waitqueue lock when modifying the flags field. So it is safe
to use the non-atomic bitops here instead of the atomic versions.

The lock has to be held, because we need to clear the busy flag and flush the
event FIFO in one atomic operation when closing the event file descriptor.

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>
2012-02-09 10:05:07 -08:00
Lars-Peter Clausen
e18045ed75 staging:iio:events: Add poll support
Add poll support to the event queue. This will allow us to check for pending
events in a application's event loop using poll() or similar. Since we already
have support for blocking reads adding poll support as well is trivial.

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>
2012-02-09 10:05:06 -08:00
Lars-Peter Clausen
43ba1100af staging:iio:events: Use waitqueue lock to protect event queue
Use the waitqueue lock to protect the event queue instead of a custom mutex.
This has the advantage that we can call the waitqueue operations with the lock
held, which simplifies the code flow a bit.

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>
2012-02-09 10:05:06 -08:00
Lars-Peter Clausen
2c00193fa1 staging:iio:events: Use kfifo for event queue
The current IIO event code uses a list to emulate FIFO like behavior.
Just use a kfifo directly instead to implement the event queue. As part of this
patch the maximum of events in the queue is increased from 10 to 16 since kfifo
requires a power of two for the number of FIFO elements.

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>
2012-02-09 10:05:06 -08:00
Lars-Peter Clausen
0a769a9533 staging:iio: Factor out event handling into its own file
The core iio file has gotten quite cluttered over time. This patch moves
the event handling code into its own file. Since the event handling code is
largely independent from the core code the only code changes necessary for
this are to make the moved iio_device_register_eventset,
iio_device_unregister_eventset and iio_event_getfd functions non static.

This has also the advantage that industrialio-core.c is now closer again to
its counterpart in the outofstaging branch.

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>
2012-02-09 10:05:06 -08:00
Lars-Peter Clausen
16a39b7a9c staging:iio: Update iio_event_interface documentation
The documentation for the iio_event_interface does not match the actual struct
anymore. This patch removes the documentation for non-existing fields and adds
documentation for missing fields.

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>
2012-02-09 10:05:05 -08:00
Lars-Peter Clausen
7e632344ad staging:iio: Setup buffer access functions when allocating the buffer
Setup the buffer access functions in the buffer allocate function. There is no
need to let each driver handle this on its own.

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>
2012-02-09 10:03:51 -08:00
Olof Johansson
54461c3067 staging:iio: ak8975: add of_match table for device-tree probing
Just like isl29018; trivial addition. Using both asahi-kasei,ak8975 and
the non-prefixed version (I couldn't figure out if Asahi Kasei had a
stock symbol to use, I only found numerical indexes for their stock info).

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 10:03:51 -08:00
Olof Johansson
4ee195241a staging:iio: isl29018: add of_match table for device-tree probing
As simple as can be right now; just one ID and no custom properties to parse.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 10:03:51 -08:00
Linus Torvalds
12e5550892 Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
* 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (466 commits)
  net/hyperv: Add support for jumbo frame up to 64KB
  net/hyperv: Add NETVSP protocol version negotiation
  net/hyperv: Remove unnecessary kmap_atomic in netvsc driver
  staging/rtl8192e: Register against lib80211
  staging/rtl8192e: Convert to lib80211_crypt_info
  staging/rtl8192e: Convert to lib80211_crypt_data and lib80211_crypt_ops
  staging/rtl8192e: Add lib80211.h to rtllib.h
  staging/mei: add watchdog device registration wrappers
  drm/omap: GEM, deal with cache
  staging: vt6656: int.c, int.h: Change return of function to void
  staging: usbip: removed unused definitions from header
  staging: usbip: removed dead code from receive function
  staging:iio: Drop {mark,unmark}_in_use callbacks
  staging:iio: Drop buffer mark_param_change callback
  staging:iio: Drop the unused buffer enable() and is_enabled() callbacks
  staging:iio: Drop buffer busy flag
  staging:iio: Make sure a device is only opened once at a time
  staging:iio: Disallow modifying buffer size when buffer is enabled
  staging:iio: Disallow changing scan elements in all buffered modes
  staging:iio: Use iio_buffer_enabled instead of open coding it
  ...

Fix up conflict in drivers/staging/iio/adc/ad799x_core.c (removal of
module_init due to using module_i2c_driver() helper, next to removal of
MODULE_ALIAS due to using MODULE_DEVICE_TABLE instead).
2012-01-09 12:18:17 -08:00
Linus Torvalds
98793265b4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits)
  Kconfig: acpi: Fix typo in comment.
  misc latin1 to utf8 conversions
  devres: Fix a typo in devm_kfree comment
  btrfs: free-space-cache.c: remove extra semicolon.
  fat: Spelling s/obsolate/obsolete/g
  SCSI, pmcraid: Fix spelling error in a pmcraid_err() call
  tools/power turbostat: update fields in manpage
  mac80211: drop spelling fix
  types.h: fix comment spelling for 'architectures'
  typo fixes: aera -> area, exntension -> extension
  devices.txt: Fix typo of 'VMware'.
  sis900: Fix enum typo 'sis900_rx_bufer_status'
  decompress_bunzip2: remove invalid vi modeline
  treewide: Fix comment and string typo 'bufer'
  hyper-v: Update MAINTAINERS
  treewide: Fix typos in various parts of the kernel, and fix some comments.
  clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR
  gpio: Kconfig: drop unknown symbol 'CS5535_GPIO'
  leds: Kconfig: Fix typo 'D2NET_V2'
  sound: Kconfig: drop unknown symbol ARCH_CLPS7500
  ...

Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new
kconfig additions, close to removed commented-out old ones)
2012-01-08 13:21:22 -08:00
Linus Torvalds
972b2c7199 Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (165 commits)
  reiserfs: Properly display mount options in /proc/mounts
  vfs: prevent remount read-only if pending removes
  vfs: count unlinked inodes
  vfs: protect remounting superblock read-only
  vfs: keep list of mounts for each superblock
  vfs: switch ->show_options() to struct dentry *
  vfs: switch ->show_path() to struct dentry *
  vfs: switch ->show_devname() to struct dentry *
  vfs: switch ->show_stats to struct dentry *
  switch security_path_chmod() to struct path *
  vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
  vfs: trim includes a bit
  switch mnt_namespace ->root to struct mount
  vfs: take /proc/*/mounts and friends to fs/proc_namespace.c
  vfs: opencode mntget() mnt_set_mountpoint()
  vfs: spread struct mount - remaining argument of next_mnt()
  vfs: move fsnotify junk to struct mount
  vfs: move mnt_devname
  vfs: move mnt_list to struct mount
  vfs: switch pnode.h macros to struct mount *
  ...
2012-01-08 12:19:57 -08:00
Greg Kroah-Hartman
ff4b8a57f0 Merge branch 'driver-core-next' into Linux 3.2
This resolves the conflict in the arch/arm/mach-s3c64xx/s3c6400.c file,
and it fixes the build error in the arch/x86/kernel/microcode_core.c
file, that the merge did not catch.

The microcode_core.c patch was provided by Stephen Rothwell
<sfr@canb.auug.org.au> who was invaluable in the merge issues involved
with the large sysdev removal process in the driver-core tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-06 11:42:52 -08:00
Al Viro
587a1f1659 switch ->is_visible() to returning umode_t
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:54:55 -05:00
Lars-Peter Clausen
7933514043 staging:iio: Drop {mark,unmark}_in_use callbacks
These callbacks are currently used by the individual buffer implementations to
ensure that the request_update callback is not issued while the buffer is in use.
But the core already provides sufficient measures to prevent this from happening
in the first place. So it is safe to remove them.

There is one functional change due to this patch. Since the buffer is no longer
marked as in use when the chrdev is opened, it is now possible to enable the
buffer while it is opened. This did not work before, because mark_param_change
did fail if the buffer was marked as in use.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:10 -08:00
Lars-Peter Clausen
869871b58c staging:iio: Drop buffer mark_param_change callback
Right now we have a mark_param_change callback in the buffer access
functions struct, which should be called whenever the parameters (length,
bytes per datum) of the buffer change. But it is only called when the user
changes the buffer size, not when the bytes per datum change. Additionally each
buffer implementation already keeps track internally whether its parameters
have changed, making the call to mark_param_change after changing the buffer
length redundant. Since each buffer implementation knows best when one of its
parameters has changed just make tracking of this internal and drop the
mark_param_change callback.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:09 -08:00
Lars-Peter Clausen
307276cb83 staging:iio: Drop the unused buffer enable() and is_enabled() callbacks
Currently none of the buffer implementations implements the enable() or
is_enable() nor does core code try to call these. So it is safe to remove them.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:09 -08:00
Lars-Peter Clausen
68bc730432 staging:iio: Drop buffer busy flag
The flag is only cleared, never set or tested, so it is safe to remove it.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:08 -08:00
Lars-Peter Clausen
bb01443e2c staging:iio: Make sure a device is only opened once at a time
Our buffer implementation does not support multiple concurrent readers. So we
have to ensure that a device is only opened once at a time. So do the same thing
we do for the event fd and introduce a per device busy flag. The flag gets set
when opening the device and gets cleared when closing the device. If a open is
attempted while the busy flag is set we return -EBUSY.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:08 -08:00
Lars-Peter Clausen
e38c79e082 staging:iio: Disallow modifying buffer size when buffer is enabled
The buffer buffer storage is only update when enabling the buffer. Changing the
buffer size while the buffer is enabled will confuse the buffer in regard to
its actual buffer size and can cause potential memory corruption. Thus it is
only safe to modify the buffer size when the buffer is disabled.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:07 -08:00
Lars-Peter Clausen
5fd6218ca5 staging:iio: Disallow changing scan elements in all buffered modes
Currently we only disallow changing the scan elements, while the buffer is
enabled, in triggered buffer mode. This patch changes it to disallow it for all
buffered modes. Disabling or enabling scan elements while the buffer is enabled
will cause undefined behavior since the reader will not be able to tell samples
with the new and old scan element set apart and thus wont be able to extract
any meaningful data from the buffer.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:07 -08:00
Lars-Peter Clausen
d4a6882e1b staging:iio: Use iio_buffer_enabled instead of open coding it
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:38:06 -08:00
Lars-Peter Clausen
50d82ad4be staging:iio: Remove unused variable
Fixes the following warning:
	drivers/staging/iio/industrialio-buffer.c: In function ‘iio_scan_mask_query’:
	drivers/staging/iio/industrialio-buffer.c:620: warning: unused variable ‘mask’

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-22 13:35:28 -08:00
Jonathan Cameron
c0fdbe149c staging:iio: iio_trigger contains defunct owner field. Remove it.
This field moved into the trigger_ops structure a while back, but somehow
never quite got cleared up.  This clears the last few drivers to set it
(nothing uses it) and gets rid of it entirely.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-16 10:56:26 -08:00
Jonathan Cameron
8324e86077 staging:iio: Make sure all triggers have a trigger_ops for the owner field.
The core needs the owner field to prevent module removal whilst in use and
uses it without confirming that the trigger_ops structure actually exists.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-16 10:56:25 -08:00
Michael Hennerich
617156fb71 iio: gyro: ADXRS450: Add support for ADXRS453 Digital Gyroscope
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-16 10:55:02 -08:00
Michael Hennerich
9631135dd9 iio: gyro: ADXRS450: Add missing read support for calibbias attribute
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-16 10:55:01 -08:00
Michael Hennerich
90b9b2276b iio: gyro: ADXRS450: Add missing scale attributes
Add missing scale attributes.
Temperature data is presented as 10-bit, twos complement number.
Therefore use singed and shift accordingly.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-16 10:55:00 -08:00
Lars-Peter Clausen
8fe64955e4 staging:iio:kfifo_buf: Fix potential buffer overflow in iio_read_first_n_kfifo
n is the number of bytes to read, not the number of samples. So if there is
enough data available we will write to the userspace buffer beyond its bounds.
Fix this by copying n bytes maximum. Also round n down to the next multiple of
the sample size, so we will only read complete samples. If the buffer is too
small to hold at least one sample return -EINVAL.

Also update the documentation of read_first_n to reflect the fact that 'n' is
supposed to be in bytes and not in samples.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-12 16:51:03 -08:00
Greg Kroah-Hartman
407f3fd8fa Merge 3.2-rc5 into staging-next
This resolves the conflict in the
drivers/staging/iio/industrialio-core.c file due to two different
changes made to resolve the same problem.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-09 19:01:27 -08:00
Lars-Peter Clausen
9d41c5bb07 staging:iio:dac:ad5791: Add id entry for the ad5790
The ad5790 has a binary compatible interface to ad5791, so we just have to add
an entry to the drivers device table to add support for it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-09 14:39:47 -08:00
Greg Kroah-Hartman
106e7cf3bd Merge branch 'work-next' into staging-next 2011-12-08 12:22:28 -08:00
Lars-Peter Clausen
5a2a6e1162 staging:iio: Fix scan mask update
When updating the scan mask we have to check the actual scan mask for if the
channel is already enabled, not the matching scan mask from the available
scan masks. The bit will already be set there and as a result the actual
scan mask will not get updated and the channel stays disabled.

Also fix the return value of iio_scan_el_store which would return 1 instead of
the number of bytes written if the channel was already active in the scan mask.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:17:36 -08:00
Greg Kroah-Hartman
19324328ad Merge branch 'work-next' into staging-next 2011-12-08 12:16:43 -08:00
Lars-Peter Clausen
a1e44d6ac5 staging:iio: Fix sw_ring memory corruption
The sw_ring does not properly handle the case where the write pointer already
has wrapped around, the read pointer has not and the remaining buffer space at
the end is enough to fill the read buffer:

  +-----------------------------------+
  |     |              |##data##|     |
  +-----------------------------------+
     write_p        read_p

In this case the current code will copy all available data to the buffer and
as a result will write beyond the bounds of the buffer and cause a memory
corruption.

To address this issue this patch adds code to calculate the available buffer
space and makes sure that the number of bytes to copy does not exceed this
number. This allows the code which copies the data around to be simplified as
it only has to consider two cases: Read wraps around and read does not wrap
around.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:16:34 -08:00
Lars-Peter Clausen
c6795ad4c7 staging:iio: Fix typo
Fix a small typo in the iio_modifer enum.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:15:44 -08:00
Jonathan Cameron
5f070a36d6 staging:iio:buffer.h update struct buffer docs.
These docs have lagged recent developments.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:13:59 -08:00
Jonathan Cameron
f79a909890 staging:iio:buffer struct iio_buffer doesn't need an indio_dev pointer.
In all existing cases, the calls are coming from a location where
the indio_dev is already available.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:13:58 -08:00
Jonathan Cameron
f7ff6945d0 staging:iio:buffer scrap to_iio_buffer as it no longer has meaning.
Now buffers do not have a specific dev structure, this is garbage.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:13:58 -08:00
Jonathan Cameron
f32971ce0a staging:iio:buffer stop allowing for read_last callback.
No longer needed now we don't allow sysfs acccess to buffer data.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:13:57 -08:00
Jonathan Cameron
c0e9e6ba34 staging:iio:ring_sw don't provide read last function.
No longer needed as we don't have drivers providing sysfs access
to buffered data.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:13:57 -08:00
Jonathan Cameron
3ca34cc462 staging:iio:adc:max1363 stop reading from buffer for sysfs access
No known use case and makes in kernel interface work more complex.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:11:12 -08:00
Jonathan Cameron
729bbf5404 staging:iio:adc:ad799x stop reading from buffer for sysfs accesses
No known use case and makes in kernel interface work more complex.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:11:11 -08:00
Jonathan Cameron
790d875989 staging:iio:adc:ad7887 stop reading from buffer for sysfs access.
No known use case and complicates in kernel interface work.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:11:11 -08:00
Jonathan Cameron
950935b17c staging:iio:adc:ad7993 stop reading from buffer for sysfs raw read.
No known usecase and makes in kernel interface work more complex.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-08 12:11:11 -08:00