hidraw is an interface that is going to obsolete hiddev one
day.

Many userland applications are using libusb instead of using
kernel-provided hiddev interface. This is caused by various
reasons - the HID parser in kernel doesn't handle all the
HID hardware on the planet properly, some devices might require
its own specific quirks/drivers, etc.

hiddev interface tries to do its best to parse all the received
reports properly, and presents only parsed usages into userspace.
This is however often not enough, and that's the reason why
many userland applications just don't use hiddev at all, and
rather use libusb to read raw USB events and process them on
their own.

Another drawback of hiddev is that it is USB-specific.

hidraw interface provides userspace readers with really raw HID
reports, no matter what the low-level transport layer is (USB/BT),
and gives the userland applications all the freedom to process
the HID reports in a way they wish to.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Add hook in usbhid for write() callback from hidraw. Sends the
report to the device through control pipe.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The i2c-nforce2 driver has SMBus PEC support, so it should say so.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

This patch is to add an abort function that will bring back the MCP51/55
controller if it was blocked by a block-read operation, in particular.
(When a slave sends a wrong byte count on a byte read, the host gets
locked up). I've only tested it on an MCP51 and MCP55. However, I'm
almost certain it will also work on MCP65, I just did not have the board
to test it on. Thus for now the abort function will only be called
if an MCP51/55 was detected.
Signed-off-by: NOleg Ryjkov <olegr@olegr.ca>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

This is the first part of the patch that adds a function to reset the
nvidia MCP51/55 i2c controller, if something bad happens to it (e.g.
a slave sends a wrong byte count during a block transaction).

This patch just adds nforce2_check_status function. It was originally
written by Hans-Frieder Vogt.

The reason that I'm the one sending it is:
- I relied on it for the second part of the patch,
- It makes the driver code cleaner/better.
Signed-off-by: NOleg Ryjkov <olegr@olegr.ca>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Fix a "mis-used register" problem on the AMD MIPS Alchemy au1550
I2C interface.

In summary, the programmable serial controller seems to hang the kernel
when I send a single 'address' byte on the I2C bus.  The patch
essentially uses the PSC_SMBSTAT register's TE (transmit FIFO empty)
bit to check when the transmit FIFO is empty, instead of using the
PSC_SMBEVNT register's TU (transmit underflow) bit.  Using the TE bit
fixed the hang problem.
Signed-off-by: NChris David <cd@chrisdavid.com>
Acked-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Rename I2C_FUNC_SMBUS_HWPEC_CALC as I2C_FUNC_SMBUS_PEC, and list that
functionality as always available through the software implementation.
Update documentation accordingly (and list similar requirements).

The way it's currently packaged doesn't present the capability in a
useful way.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Mark the i2c-at91 driver BROKEN in Kconfig, and explain just
why it's broken.  (Summary:  hardware design issues.)
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

This removes:

 - An effectively unused hook:  i2c_algorithm.algo_control.

 - The i2c_control() call, used only by i2c-dev to call that
   unused hook or set two barely supported adapter params.

   (That param setting moves into i2c-dev.c ... still iffy
   due to lack of locking, but no other changes.)

As shown by diffstat, this is a net code shrink.  It also reduces the
complexity of the I2C adapter and /dev interfaces.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

i2c_algorithm.algo_control is about to be removed.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Reviewed-by: NMichael Krufky <mkrufky@linuxtv.org>
Acked-by: NMauro Carvalho Chehab <mchehab@infradead.org>

This removes NOP implementations of i2c_algorithm.algo_control.

With this change, there are no implementations of this hook in
the kernel.org tree ... that hook seems about ripe to remove.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The I2C_M_RECV_LEN calling convention for i2c_mesg.flags involves
playing games with reported buffer lengths.  (They start out less
than their actual size, and the length is then modified to reflect
how many bytes were delivered ... which one hopes is less than the
presumed actual size.)  Refuse to play such error prone games across
the boundary between userspace and kernel.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for multiple chips to i2c-stub. I've changed the memory
allocation scheme from static to dynamic, so that we don't waste too
much memory.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NMark M. Hoffman <mhoffman@lightlink.com>

Remove this unneeded mutex. Indeed it was used to serialize access to
the hardware, but this is already done by the i2c-core layer, see
'bus_lock' mutex used by i2c_transfer().
Signed-off-by: NFrancis Moreau <francis.moro@gmail.com>
Acked-by: NBryan Wu <bryan.wu@analog.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add the Intel Tolapai SMBus Controller DID.
Signed-off-by: NJason Gaston <jason.d.gaston@intel.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Clarify use of the I2C_M_* flags by highlighting the fact that
most of them depend on I2C_FUNC_PROTOCOL_MANGLING.

Also provide kerneldoc for i2c_smbus_read_block_data() and also
for "struct i2c_msg".
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Do not initialize the PCF8574 with an arbitrary value. Users will have
to write the initial value to sysfs themselves.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NVladimir Barinov <vbarinov@ru.mvista.com>
Acked-by: NTrilok Soni <soni.trilok@gmail.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Use i2c_bit_add_numbered_adapter() if device id specified, so that the
i2c-ibm_iic adapter works well with new-style pre-declared devices.
Signed-off-by: NStefan Roese <sr@denx.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Switch the tps65010 driver into a "new-style" I2C driver, and convert all
of its in-tree users (board support for OSK, H2, H3) accordingly.

That accounts for most of the board-specific code in this driver; the
rest of that code is now moved into board-specific initcalls.

Also remove some of the many now-superfluous #includes.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Prepare to convert tps65010 driver to "new style" driver by changing
how it references the i2c_client.  This lets the eventual patch with
driver and platform updates be smaller.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

After the i2c-isa removal some code can become static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

We need to be able to flag I2C devices, such as RTCs, which can issue wake
events (usually through IRQ lines).  This adds an i2c_board_info.flags bit,
and uses it to initialize the i2c device node.  (And shrinks a few lines
that were overly long.)
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

    
Commit 3d73c288 ("mlx4_core: Fix section mismatches") introduced a
stupid bug in device init: when some of mlx4_init_one() was split off
into __mlx4_init_one(), the call from the main mlx4_init_one()
function was back to mlx4_init_one() rather than to __mlx4_init_one(),
which leads to an obvious infinite loop if the function is every
called.
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

... and yes, caller wants it to return int.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Breaks on any target that has copy_to_user() defined as a non-trivial
macro.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

ssb bus needs <linux/io.h>

  linux/drivers/ssb/main.c: In function 'ssb_ssb_read16':
  linux/drivers/ssb/main.c:518: error: implicit declaration of function 'readw'
  linux/drivers/ssb/main.c: In function 'ssb_ssb_read32':
  linux/drivers/ssb/main.c:526: error: implicit declaration of function 'readl'
  linux/drivers/ssb/main.c: In function 'ssb_ssb_write16':
  linux/drivers/ssb/main.c:534: error: implicit declaration of function 'writew'
  linux/drivers/ssb/main.c: In function 'ssb_ssb_write32':
  linux/drivers/ssb/main.c:542: error: implicit declaration of function 'writel'
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

b43 wireless needs <linux/io.h>

  linux/drivers/net/wireless/b43/pio.h: In function 'b43_pio_write':
  linux/drivers/net/wireless/b43/pio.h:89: error: implicit declaration of function 'mmiowb'

  linux/drivers/net/wireless/b43/phy.c: In function 'b43_phy_write':
  linux/drivers/net/wireless/b43/phy.c:301: error: implicit declaration of function 'mmiowb'

  linuxdrivers/net/wireless/b43/sysfs.c: In function 'b43_attr_interfmode_store':
  linuxdrivers/net/wireless/b43/sysfs.c:147: error: implicit declaration of function 'mmiowb'
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

m68k: fix net drivers after recent get_stats updates
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

emc_endio returns void:
  linux/drivers/md/dm-emc.c: In function 'emc_endio':
  linux/drivers/md/dm-emc.c:58: warning: 'return' with a value, in function returning void
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

m68k: Atari input drivers cleanup:
  - memleak on failed init/register of input devices fixed
  - correct keycodes table (Atari keycodes are almost, but not entirely, equal
    to Linux keycodes).
Signed-off-by: NMichael Schmitz <schmitz@biophys.uni-duesseldorf.de>
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

init_dma_ali15x3() guarantees that hwif->dma_base will never be set for
m5229_revision < 0x20 so remove redundant m5229_revision >= 0x20 check from
init_hwif_common_ali15x3().

While at it remove incorrect comment.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Set hwif->atapi_dma/{ultra,mwdma}_mask and drive->autodma after checking that
->dma_base exists.  If ->dma_base is not set (== PCI BAR4 cannot be reserved)
then DMA hooks shouldn't be initialized or bad things will happen.

OTOH hwif->set_{pio,dma}_mode hooks should be set even if hwif->dma_base == 0.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Set hwif->ide_dma_{check,on} and hwif->autodma to 1 after checking that
->dma_base exists.  If ->dma_base is not set (== PCI BAR4 cannot be reserved)
then DMA hooks shouldn't be initialized or bad things will happen.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

If ->dma_base is not set (== PCI BAR4 cannot be reserved) then DMA hooks
shouldn't be initialized or bad things will happen.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

If ->dma_base is not set (== PCI BAR4 cannot be reserved) then DMA hooks
shouldn't be initialized or bad things will happen.
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Devices which don't set word 93 validation bit should be now handled by
ide-iops.c::ivb_list[] and for debugging purposes cable detection can be
completely overriden with "idex=ata66" parameter.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Need to probe slave device first to make it release PDIAG-
(this is required for correct device side cable detection).

Based on libata commit f31f0cc2.

Thanks to Craig for testing this patch.

Cc: Craig Block <chblock3@yahoo.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16.

* Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program 
  the host for the transfer mode after programming the device.  Set it
  in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac
  and via82cxxx host drivers.

* Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely
  skip programming of host/device for the transfer mode ("smart" hosts).
  Set it in it821x host driver and check it in ide_tune_dma().

* Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all
  direct ->set_pio_mode/->speedproc users to use these helpers.

* Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc
  methods to callers.

* Rename ->speedproc method to ->set_dma_mode, make it void and update
  all implementations accordingly.

* Update ide_set_xfer_rate() comments.

* Unexport ide_config_drive_speed().

v2:
* Fix issues noticed by Sergei:
  - export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt
    to setting DMA modes from sc1200_set_pio_mode() to do_special()
  - check IDE_HFLAG_NO_SET_MODE in ide_tune_dma()
  - check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode()
  - check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode()
  - return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL
  - don't set ->set_{pio,dma}_mode on it821x in "smart" mode
  - fix build problem in pmac.c
  - minor fixes in au1xxx-ide.c/cs5530.c/siimage.c
  - improve patch description

Changes in behavior caused by this patch:
- HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change
  PIO mode if it821x controller is in "smart" mode
- removal of two debugging printk-s (from cs5530.c and sc1200.c)
- transfer modes 0x00-0x07 passed from user space may be programmed twice on
  the device (not really an issue since 0x00 is not supported correctly by
  any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid)
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>