Commit Graph

22240 Commits

Author SHA1 Message Date
Mark Hounschell
be94358bb8 staging: dgap: Remove userland source code files
This patch removes userland source code files downld.c and dgap_downld.h

Signed-off-by: Mark Hounschell <markh@compro.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-24 16:44:19 -08:00
Mark Hounschell
581b499a51 staging: dgap: Remove CVS ID tags
This patch removes all the original CVS tags because they are in my way

Signed-off-by: Mark Hounschell <markh@compro.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-24 16:44:19 -08:00
John Stultz
1acec6a283 staging: binder: Improve Kconfig entry for ANDROID_BINDER_IPC_32BIT
Add a more clear explanation of the option in the prompt, and
make the config depend on ANDROID_BINDER_IPC being selected.

Also sets the default to y, which matches AOSP.

Cc: Colin Cross <ccross@android.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Serban Constantinescu <serban.constantinescu@arm.com>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-24 16:29:40 -08:00
Arve Hjønnevåg
da49889deb staging: binder: Support concurrent 32 bit and 64 bit processes.
For 64bit systems we want to use the same binder interface for 32bit and
64bit processes. Thus the size and the layout of the structures passed
between the kernel and the userspace has to be the same for both 32 and
64bit processes.

This change replaces all the uses of void* and size_t with
binder_uintptr_t and binder_size_t. These are then typedefed to specific
sizes depending on the use of the interface, as follows:
       * __u32 - on legacy 32bit only userspace
       * __u64 - on mixed 32/64bit userspace where all processes use the same
interface.

This change also increments the BINDER_CURRENT_PROTOCOL_VERSION to 8 and
hooks the compat_ioctl entry for the mixed 32/64bit Android userspace.

This patch also provides a CONFIG_ANDROID_BINDER_IPC_32BIT option for
compatability, which if set which enables the old protocol, setting
BINDER_CURRENT_PROTOCOL_VERSION to 7, on 32 bit systems.

Please note that all 64bit kernels will use the 64bit Binder ABI.

Cc: Colin Cross <ccross@android.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Serban Constantinescu <serban.constantinescu@arm.com>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
[jstultz: Merged with upstream type changes. Various whitespace fixes
and longer Kconfig description for checkpatch. Included improved commit
message from Serban (with a few tweaks).]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-24 16:29:40 -08:00
Serban Constantinescu
df24a2eaa1 staging: binder: Fix ABI for 64bit Android
BC_REQUEST_DEATH_NOTIFICATION and BC_CLEAR_DEATH_NOTIFICATION were
defined with the wrong structure that did not match the code. Since a
binder pointer and handle are the same size on 32 bit systems, this
change does not affect them. The two commands claimed they were using
struct binder_ptr_cookie but they are using a 32bit handle and a pointer.

The main purpose of this patch is to add the binder_handle_cookie
struct so the service manager does not have to define its own version
(libbinder writes one field at a time so it does not use the struct).

On 32bit systems the payload size is the same as the size of struct
binder_ptr_cookie. On 64bit systems, the size does differ, and the
ioctl number does change. However, there are no known 64bit users of
this interface, and any 64bit systems will need the following patch to
run 32 bit processes anyway, so it is not expected that anyone will
ship a 64bit system without this change, so this change should not
affect any existing systems.

Cc: Colin Cross <ccross@android.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Serban Constantinescu <serban.constantinescu@arm.com>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
[jstultz: Few 80+ col fixes for checkpatch, improved commit message
with help from Serban, and included rational from Arve's email]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-24 16:29:40 -08:00
Greg Kroah-Hartman
58e7573138 Merge branch 'imx-drm-staging' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into staging-next
Russell writes:

These changes, which convert imx-drm to use the recently merged
component infrastructure, have been reviewed and acked by Philipp Zabel,
Shawn Guo and Fabio Estevam, and are now deemed to be ready.
2014-02-24 12:39:56 -08:00
Greg Kroah-Hartman
b42060069f Merge 3.14-rc4 into staging-next.
We want those fixes here as well.
2014-02-24 12:33:52 -08:00
Russell King
d94905e019 imx-drm: imx-hdmi: add hotplug support to HDMI component
Add hotplug support.  We have to make the interrupt handler threaded so
we can call drm_helper_hpd_irq_event().  Keeping in mind that we will
want to share the interrupt with other HDMI interface drivers (eg, audio
and CEC) put the groundwork in now for that, rather than just using
IRQF_ONESHOT.

Also, we must not call drm_helper_hpd_irq_event() until we have fully
setup the connector; keep the interrupt(s) muted until after that point.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:08:02 +00:00
Russell King
3e68439bf0 imx-drm: imx-drm-core: add core hotplug connector support
Add core imx-drm support for hotplug connector support.  We need to
setup the poll helper after we've setup the connectors; the helper
scans the connectors to determine their capabilities.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:08:00 +00:00
Russell King
e7d6231e67 imx-drm: imx-drm-core: various cleanups
Various cleanups are possible after the previous round of changes; these
have no real functional bearing other than tidying up the code.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:58 +00:00
Russell King
b85f2b5d87 imx-drm: imx-drm-core: move allocation of imxdrm device to driver load function
It is now no longer necessary to keep this structure around; we can
allocate it upon DRM driver load and destroy it thereafter without
affecting the other components now.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:56 +00:00
Russell King
ccec7f621d imx-drm: imx-drm-core: kill off mutex
This mutex doesn't protect anything anymore; get rid of it.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:54 +00:00
Russell King
06c6b82bf7 imx-drm: imx-drm-core: get rid of drm_mode_group_init_legacy_group()
Since we're now operating like a conventional DRM driver, doing all
the initialisation within the driver's ->load callback, we don't
need to mess around with the mode groups - we can rely on the one
in the DRM platform code.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:52 +00:00
Russell King
8d71de6152 imx-drm: imx-drm-core: remove imx_drm_connector and imx_drm_encoder code
The core imx_drm_connector and imx_drm_encoder code is no longer
required - the connectors and encoders are all using the component
support, so we can remove this.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:49 +00:00
Russell King
1b3f767566 imx-drm: initialise drm components directly
Now that our bind function is only ever called during the main DRM
driver ->load callback, we don't need to have the imx_drm_connector or
imx_drm_encoder abstractions anymore.  So let's get rid of it, and move
the DRM connector and encoder setup into the connector support files.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:48 +00:00
Russell King
8a51a33b35 imx-drm: imx-drm-core: provide common connector and encoder cleanup functions
Provide two helper functions to assist with cleaning up imx-drm
connectors and encoders.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:46 +00:00
Russell King
9e2d410d18 imx-drm: imx-drm-core: provide helper function to parse possible crtcs
Provide a helper function to parse possible crtcs before the encoder
is registered.  The crtc mask is derived from the position of the
CRTCs registered in the drm_device.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:43 +00:00
Russell King
32266b4520 imx-drm: use supplied drm_device where possible
The component helper provides us the drm_device which is being
registered.  Rather than having to reference a global in imx-drm-core,
use this to get the imxdrm device, and also use it to register the CRTC
against.

This means we never have CRTCs/encoders/connectors without the drivers
private data being accessible.

Remove the module owner field as well; this provides no protection
against the device being unbound.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:41 +00:00
Russell King
1df8b53000 imx-drm: remove imx-fb.c
imx-fb.c doesn't need to be separate from imx-drm-core.c - all it is
doing is setting up the minimum and maximum sizes of the scanout
buffers, and setting up the mode_config function pointers.  Move the
contents into imx-drm-core.c and kill this file.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:39 +00:00
Russell King
8acba02f7e imx-drm: remove separate imx-fbdev
Now that we know when the components of the imx-drm subsystem will be
initialised, we can move the fbdev helper initialisation and teardown
into imx-drm-core.  This gives us the required ordering that DRM wants
in both driver load and unload methods.

We can also stop exporting the imx_drm_device_get() and
imx_drm_device_put() methods; nothing but the fbdev helper was making
use of these.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:37 +00:00
Russell King
e355e7dd60 imx-drm: delay publishing sysfs connector entries
Delay publishing sysfs connector entries until all components have
initialised.  This reduces the probability of generating false hotplug
events when we're uncertain whether the driver can fully initialise.
This also pulls that code out of the individual imx-drm connector
drivers.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:35 +00:00
Russell King
17b5001b51 imx-drm: convert to componentised device support
Use the componentised device support for imx-drm.  This requires all
the sub-components and the master device to register with the component
device support.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:07:33 +00:00
Russell King
f2d66aad1a imx-drm: simplify setup of panel format
The encoder format passed into imx_drm_crtc_panel_format*() is the
encoder format used for DRM in most cases; the HDMI encoder sets
this to none, but this is incorrect, it should be TMDS.

Since this is the case, we can pass the drm_encoder structure
directly into this function and use the supplied fields there to
configure the CRTC.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:04:08 +00:00
Russell King
baa68c4bfd imx-drm: provide common connector mode validation function
Provide a common connector mode validation function, which can be used
to limit the available modes according to other components in the
system.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:04:06 +00:00
Russell King
887eceacc5 imx-drm: imx-drm-core: use array instead of list for CRTCs
The DRM core indexes vblank by number, so there's little point
maintaining a list, and have to scan the list to find the appropriate
structure.  Instead, use an array of pointers to the CRTCs.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:04:04 +00:00
Russell King
e76171b046 imx-drm: imx-drm-core: sanitise imx_drm_encoder_get_mux_id()
Address the following issues:
- imx_drm_encoder_get_mux_id() searches the CRTC list for the matching
  CRTC, and returns the position within this list as the MUX programming
  value for encoders.  This is sub-optimal for two reasons:
  1. It relies upon the CRTC list not changing during the lifetime of
     the driver.
  2. It is dependent on the initialisation order of the CRTCs.

  We address (1) in this patch, leaving (2) until a better solution can
  be found, as (2) requires larger changes.

- imx_drm_encoder is unused.  Instead, pass the drm_encoder which is
  slightly more useful; all callers pass encoder->crtc as the required
  crtc, so move this inside the function.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:04:00 +00:00
Russell King
0721feeee0 imx-drm: ipu-v3: more clocking fixes
There's no point in using the clk API for this; we end up having to
violate the layering this provides.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:54 +00:00
Russell King
370b181516 imx-drm: ipu-v3: don't use clk_round_rate() before clk_set_rate()
This is nonsense; clk_round_rate() is just clk_set_rate() without the
side effect of changing the hardware.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:51 +00:00
Russell King
24013ea8ff imx-drm: ipu-v3: more inteligent DI clock selection
The DI clock selection was very rudimentary: it would statically use
either the IPU internal clock or the DI external clock depending on
which "encoder" was being used.  In the case of HDMI, it would always
use the IPU clock.

Moreover, using the IPU clock resulted in fractional divisors, which
are achieved by skipping clock pulses.  This can result in the HDMI
PHY PLL being frequency modulated, and the attached device is then
unable to properly lock on to the TMDS clock.

We need at least 1% accurate and stable clocks for HDMI.

Arrange for the DI clock to be sourced from the IPU internal clock
if it can satisfy our requirements, otherwise switch to the DI
external clock and try and set the external clock to our desired
pixel clock rate.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:49 +00:00
Russell King
4067838802 imx-drm: imx-hdmi: fix CTS/N setup at init time
Many of the variables for the audio clock regenerator (CTS/N) were not
initialised in any way.  The pixel rate which was being used also
wasn't being adjusted at all when the display mode is modified.

Get rid of the seaprate 'pixel_clk_rate', and use the stored pixel
clock rate instead.  Pass this desired pixel clock rate into
hdmi_set_clk_regenerator().  Collapse down hdmi_init_clk_regenerator()
since it is a copy of hdmi_set_clk_regenerator(), and pass a default
pixel clock rate.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:47 +00:00
Russell King
bebdf66419 imx-drm: imx-hdmi: clean up setting of vp_conf
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:44 +00:00
Russell King
812bc615fd imx-drm: imx-hdmi: provide register modification function
There are a load of read-modify-write patterns to change bitfields in
various registers in this driver; provide a helper to perform this
manipulation.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:43 +00:00
Russell King
c082f9d715 imx-drm: imx-hdmi: clean up setting CSC registers
Rather than manually writing each register sequentially, we can use a
loop to reduce the amount of code.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:40 +00:00
Russell King
3e46f15211 imx-drm: imx-hdmi: convert HDMI clock settings to tabular form
Rather than having large if() and switch() statements, provide a table
to look up the register settings for various clock rates.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-24 12:03:39 +00:00
Linus Torvalds
b9c2b05022 Staging tree fix for 3.14-rc4
Here is a single android driver fix for 3.14-rc4 that fixes a reported
 problem in the binder driver.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging tree fix from Greg KH:
 "Here is a single android driver fix for 3.14-rc4 that fixes a reported
  problem in the binder driver"

* tag 'staging-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: binder: Fix death notifications
2014-02-23 10:39:21 -08:00
Greg Kroah-Hartman
aa256f8d0d Second round of IIO new driver, functionality and cleanups for the 3.15 series.
There are a few fixes in here that might, earlier in a cycle, have gone
 to Greg as fixes. Given they are either minor or have never actually
 been observed as causing trouble (the locking bug in the event code) and
 are invasive, I have included them in this pull request, targeting the
 3.15 merge window instead.
 
 The rest are pretty uncontroversial new drivers, a handy little tool for
 the example code in our documentation and little cleanups.
 
 New drivers
 * Freescale Vybrid and i.MX6SLX ADC driver.
 * HID Sensor hub proximity sensors.
 * HID Sensor hub pressure sensors.
 * LPS25H Pressure sensors added to the ST micro pressure sensor driver.
 
 New functionality
 * lsiio tool.  This is added to the staging tree as we haven't yet moved
   the example code it sits with out.  Moving this code out is now a reasonably
   high priority but holding up this tool in the meantime did not seem
   worthwhile.
 * mag3110 - add missing scale factor for temperature output to userspace.
 
 Cleanups
 * Fix a bug in the event reporting in which a spin lock might be held over
   when a sleep occured.  A similar bug was found by Lars in the buffer code.
   It has not to our knowledge been observed as actually occuring and is
   a little too invasive to push out as a fix.
 * Drop the IIO_ST macro after clearing out all users.  This macro was a very
   bad idea leading to a number of bugs after it stopped covering all elements
   of the structure being assigned and people started making assumptions about
   what it did cover.  Glad to see it go!
 * Avoid applying extended name to shared attributes as it makes no sense.
   No in tree drivers were using the combination, hence not pushed out as
   a fix.
 * ad799x - move to devm_request_threaded_irq to reduce boilerplate clean up.
 * bma180 - make the low_pass_filter_3db_frequency info element shared rather
   than per attribute.  The old approach was valid but not as clean as it might
   be and was setting a bad example.  Hence the cleanup.
 * mxs-lradc - propogate the error code form a platform_get_irq call rather than
   eating it up by returning -EINVAL on all errors.
 * ad799x - typo fix in the copyright message. Either that or Michael was
   asserting a copyright that moved backwards in time by about a thousand years.
 * ad799x - use a regulator for vref rather than platform data.  The driver
   dates from just as the regulator framework was coming into common use so
   provides an alternative way of specifying the reference voltage.  We no
   longer need that approach so drop it in favour of a regulator only approach.
 * max1363 - some internal vref values were out by a small amount.  The effect
   would have been tiny and no one noticed hence not pushing this through as
   a fix.
 * core - replace some pointless goto error_ret (with no clean up) lines with
   direct returns.  This is my bad coding style so I'm glad to see it cleaned
   up.
 * core - avoid a kasprintf that just directly prints a string with no
   formatting elements.  This has always been there but Lars just noticed it.
   Oops.
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Merge tag 'iio-for-3.15b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second round of IIO new driver, functionality and cleanups for the 3.15 series.

There are a few fixes in here that might, earlier in a cycle, have gone
to Greg as fixes. Given they are either minor or have never actually
been observed as causing trouble (the locking bug in the event code) and
are invasive, I have included them in this pull request, targeting the
3.15 merge window instead.

The rest are pretty uncontroversial new drivers, a handy little tool for
the example code in our documentation and little cleanups.

New drivers
* Freescale Vybrid and i.MX6SLX ADC driver.
* HID Sensor hub proximity sensors.
* HID Sensor hub pressure sensors.
* LPS25H Pressure sensors added to the ST micro pressure sensor driver.

New functionality
* lsiio tool.  This is added to the staging tree as we haven't yet moved
  the example code it sits with out.  Moving this code out is now a reasonably
  high priority but holding up this tool in the meantime did not seem
  worthwhile.
* mag3110 - add missing scale factor for temperature output to userspace.

Cleanups
* Fix a bug in the event reporting in which a spin lock might be held over
  when a sleep occured.  A similar bug was found by Lars in the buffer code.
  It has not to our knowledge been observed as actually occuring and is
  a little too invasive to push out as a fix.
* Drop the IIO_ST macro after clearing out all users.  This macro was a very
  bad idea leading to a number of bugs after it stopped covering all elements
  of the structure being assigned and people started making assumptions about
  what it did cover.  Glad to see it go!
* Avoid applying extended name to shared attributes as it makes no sense.
  No in tree drivers were using the combination, hence not pushed out as
  a fix.
* ad799x - move to devm_request_threaded_irq to reduce boilerplate clean up.
* bma180 - make the low_pass_filter_3db_frequency info element shared rather
  than per attribute.  The old approach was valid but not as clean as it might
  be and was setting a bad example.  Hence the cleanup.
* mxs-lradc - propogate the error code form a platform_get_irq call rather than
  eating it up by returning -EINVAL on all errors.
* ad799x - typo fix in the copyright message. Either that or Michael was
  asserting a copyright that moved backwards in time by about a thousand years.
* ad799x - use a regulator for vref rather than platform data.  The driver
  dates from just as the regulator framework was coming into common use so
  provides an alternative way of specifying the reference voltage.  We no
  longer need that approach so drop it in favour of a regulator only approach.
* max1363 - some internal vref values were out by a small amount.  The effect
  would have been tiny and no one noticed hence not pushing this through as
  a fix.
* core - replace some pointless goto error_ret (with no clean up) lines with
  direct returns.  This is my bad coding style so I'm glad to see it cleaned
  up.
* core - avoid a kasprintf that just directly prints a string with no
  formatting elements.  This has always been there but Lars just noticed it.
  Oops.
2014-02-23 09:08:34 -08:00
H Hartley Sweeten
c36d44ace6 staging: comedi: pcl816: tidy up pcl818_check()
This function probes a number of the boards registers during the
(*attach) to verify that it is actually a PCL-816 compatible board.
For aesthetics, move the function closer to the (*attach).

To better match the pcl818 driver, allocate the private data before
calling pcl816_check().

Refactor the function to return an errno if fails. Change the errno
from -EIO to -ENODEV and remove the unnecessary dev_err() noise.

Make sure the CONTROL register is reset to a known state after the
check. The 0x18 value actually defines an invalid interrupt selection
and sets an undefined bit.

Add a couple comments to clarify the magic values.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
f51eb4f4b9 staging: comedi: pcl816: remove unnecessary function separation comments
These comments are just added cruft. Remove them.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
bf6e48e87c staging: comedi: pcl816: remove unnecessary 'dev->irq' check
If the dev->irq is not valid the interrupt function will not be hooked
up during the attach. Remove the unnecessary check.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
94349cb9cb staging: comedi: pcl816: rename 'irq_blocked' in private data
This member in the private data is a flag that indicates that an analog
input async command is currently running. Rename it to make this clear.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
efd5b7b5d7 staging: comedi: pcl816: kzalloc'ed memory does not need to be cleared
The private data is kzalloc'ed in the (*attach). There is no need to
initialize any of the members to 0.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
ab3c44fa38 staging: comedi: pcl816: convert private data flags to bit-fields
The 'irq_was_now_closed' member is actually a flag, devpriv->int816_mode
will always be > 0 when it's used to set irq_was_now_closed in the cancel
function.

Convert the flags in the private data to bit-fields to save a bit of
space.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
0f9c4c7e38 staging: comedi: pcl816: remove 'ai_act_chanlist_{len, pos}' from private data
These members of the private data don't do anything usefull. Just remove them.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
a3ab029e83 staging: comedi: pcl816: use subdevice (*cancel)
Use the subdevice (*cancel) operation to remove the need for a forward
declaration.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
f23068ec57 staging: comedi: pcl816: don't calc the timer divisors twice
The timer divisors are calculated in the (*do_cmdtest) before the (*do_cmd)
is called by the comedi core. The extra sanity checks in the (*do_cmd) are
not necessary, the values returned from i8253_cascade_ns_to_timer() will be
greater than 1. Save the values in the private data so they don't need to be
recalced.

Refactor pcl816_start_pacer() to use the values from the private data.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
e5f376df8b staging: comedi: pcl816: clarify irq request in pcl816_attach()
All the board types can use IRQ 2-7 for async command support. Remove
the 'IRQbits', which is a mask of the valid IRQs, from the boardinfo
and refactor pcl816_attach().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
31baee58a6 staging: comedi: pcl816: remove 'n_aochan' from boardinfo
This member of the boardinfo is the same for all board types. Remove this
data from the boardinfo.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
H Hartley Sweeten
d39c5ed7cb staging: comedi: pcl816: remove 'ai_ns_min' from boardinfo
This member of the boardinfo is the same for all board types. Remove this
data from the boardinfo.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:39:38 -08:00
Chase Southwood
6777877c4f Staging: comedi: addi-data: don't initialize a static variable to 0
In hwdrv_apci1564.c, one static variable is zero initialized.  This is
unneeded and redundant, so we remove the initialization.

Signed-off-by: Chase Southwood <chase.southwood@yahoo.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:38:09 -08:00
Chase Southwood
614bd02fc0 Staging: comedi: addi-data: replace printk() with dev_err() in hwdrv_apci1564.c
There were a small handful of printk() calls in hwdrv_apci1564.c.  It is
generally better to use dev_err() for error messages instead, so I
switched all the printk() calls out, as well as cleaned up the error
strings.

Signed-off-by: Chase Southwood <chase.southwood@yahoo.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-21 12:38:09 -08:00