Wait for active frame transfer to complete after disabling LCDC.
At the same this wait is not be required when there are sync and
underflow errors.
Patch applies for revision 2 of LCDC present am335x.
More information on disable and reset sequence can be found in
section 13.4.6 of AM335x TRM @www.ti.com/am335x.
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

the driver's module init and exit functions are calling
platform_driver_register and platform_driver_unregister and doing nothing
else.

This same as that of the module_platform_driver,
remove this init and exit functions and use the module_platform_driver instead
Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

This patch solves problems with the error handling by
introducing labels for proper error paths and it also
frees resources that where missed.
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

  The code 124 (0x7C, |) is rendered as a broken line in two
fonts, instead of a continuous line.  Some keyboards show a
"broken bar" on one of theirs keys, other show a (continuous)
"vertical line".
Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Merge branch 'v3.7-for-florian' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fbdev-next

SW reset sets DP TX to initial value, so configurations for analog parameter
and interrupt are not set properly. Therefore, exynos_dp_init_analog_param()
and exynos_dp_init_interrupt() should be moved to after sw reset is called,
in order to set these values properly.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

This patch changes return type of exynos_dp_init_video to void,
because the return value is unnecessary.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Fix the return value of exynos_dp_get_pll_lock_status to
reflect what it actually returns.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

This patch adds the function name to aux transaction failure messages
so we can tell which transaction is failing. It also changes the level
of Aux Transaction fail messages from error to debug. We retry the
transactions a few times and will report errors if warranted outside of
this function.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Initialize return variable before exiting on an error path.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

LCD controller on am335x supports 24bpp raster configuration in addition
to ones on da850. LCDC also supports 24bpp in unpacked format having
ARGB:8888 32bpp format data in DDR, but it doesn't interpret alpha
component of the data.
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Michal maybe forgot it merely, we should add code
to check the return value of kzalloc to make the
code more robust.
Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

This patch checks time loop for RPLY_RECEIV which means that
AUX channel command reply is received.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches. This patch replaces the use of kzalloc by devm_kzalloc.

Additionally, this patch fixes a memory leak: some memory was allocated for
'panel' but not released when the subsequent call to setup_vsync fails.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches. This patch replaces the use of kzalloc by devm_kzalloc.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches. This patch uses these functions for data that is allocated in the
probe function of a platform device and is only freed in the remove function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches. This patch uses these functions for data that is allocated in the
probe function of a platform device and is only freed in the remove function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The devm_ functions allocate memory that is released when a driver
detaches. This patch uses devm_clk_get() for these functions.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Fixes the following sparse warnings:
drivers/video/exynos/exynos_mipi_dsi.c:208:22: warning:
symbol 'exynos_mipi_dsi_find_lcd_device' was not declared. Should it be static?
drivers/video/exynos/exynos_mipi_dsi.c:268:22: warning:
symbol 'exynos_mipi_dsi_bind_lcd_ddi' was not declared. Should it be static?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The devm_clk_get function allocates memory that is released when a driver
detaches. This patch uses this function for data that is allocated in the probe
function of a platform device and is only freed in the remove function.

Additionally, this patch removes a null check after platform_get_resource that
is redundant with the one done by devm_request_and_ioremap.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.
Signed-off-by: Damien Cassou <damien.cassou@lifl.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

This patch adds adjustement for voltage swing and pre-emphasis during
Link Training procedure. According to the DP specification, unless all
the LANEx_CR_DONE bits are set, the transmitter must read
the ADJUST_REQUEST_LANEx_x, increase the voltage swing according to
the request, and update the TRAINING_LANEx_SET bytes to match the new
voltage swing setting.

Refer to the DP specification v1.1a, Section 3.5.1.3 Link Training.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

omapfb does not currently set pseudo palette correctly for color depths
above 16bpp, making red text invisible, command like
  echo -e '\e[0;31mRED' > /dev/tty1
will display nothing on framebuffer console in 24bpp mode.
This is because temporary variable is declared incorrectly, fix it.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Cc: stable@vger.kernel.org # v3.x
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Commit f476ae9d (OMAPDSS: APPLY: Remove
DISPC writes to manager's lcd parameters in interface) broke the SDI
output, as it causes the SDI PLL locking to fail.

LCLK and PCLK divisors are located in shadow registers, and we normally
write them to DISPC registers when enabling the output.  However, SDI
uses pck-free as source clock for its PLL, and pck-free is affected by
the divisors. And as we need the PLL before enabling the output, we need
to write the divisors early.

It seems just writing to the DISPC register is enough, and we don't need
to care about the shadow register mechanism for pck-free. The exact
reason for this is unknown.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Do a sanity check on these before using them as divisors.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Using kfree to free data allocated with devm_kzalloc causes double frees.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x;
@@

x = devm_kzalloc(...)
...
?-kfree(x);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Switch to kmalloc(,GFP_ATOMIC) in bit_putcs to fix below trace:

[    9.771812] BUG: sleeping function called from invalid context at /usr/src/linux-git/mm/slub.c:943
[    9.771814] in_atomic(): 1, irqs_disabled(): 1, pid: 1063, name: mount
[    9.771818] Pid: 1063, comm: mount Not tainted 3.5.0-jupiter-00003-g8d858b1-dirty #2
[    9.771819] Call Trace:
[    9.771838]  [<c104f79b>] __might_sleep+0xcb/0xe0
[    9.771844]  [<c10c00d4>] __kmalloc+0xb4/0x1c0
[    9.771851]  [<c1041d4a>] ? queue_work+0x1a/0x30
[    9.771854]  [<c1041dcf>] ? queue_delayed_work+0xf/0x30
[    9.771862]  [<c1205832>] ? bit_putcs+0xf2/0x3e0
[    9.771865]  [<c1041e01>] ? schedule_delayed_work+0x11/0x20
[    9.771868]  [<c1205832>] bit_putcs+0xf2/0x3e0
[    9.771875]  [<c12002b8>] ? get_color.clone.14+0x28/0x100
[    9.771878]  [<c1200d2f>] fbcon_putcs+0x11f/0x130
[    9.771882]  [<c1205740>] ? bit_clear+0xe0/0xe0
[    9.771885]  [<c1200f6d>] fbcon_redraw.clone.21+0x11d/0x160
[    9.771889]  [<c120383d>] fbcon_scroll+0x79d/0xe10
[    9.771892]  [<c12002b8>] ? get_color.clone.14+0x28/0x100
[    9.771897]  [<c124c0b4>] scrup+0x64/0xd0
[    9.771900]  [<c124c22b>] lf+0x2b/0x60
[    9.771903]  [<c124cc95>] vt_console_print+0x1d5/0x2f0
[    9.771907]  [<c124cac0>] ? register_vt_notifier+0x20/0x20
[    9.771913]  [<c102b335>] call_console_drivers.clone.5+0xa5/0xc0
[    9.771916]  [<c102c58e>] console_unlock+0x2fe/0x3c0
[    9.771920]  [<c102ca16>] vprintk_emit+0x2e6/0x300
[    9.771924]  [<c13f01ae>] printk+0x38/0x3a
[    9.771931]  [<c112e8fe>] reiserfs_remount+0x2ae/0x3e0
[    9.771934]  [<c112e650>] ? reiserfs_fill_super+0xb00/0xb00
[    9.771939]  [<c10ca0ab>] do_remount_sb+0xab/0x150
[    9.771943]  [<c1034476>] ? ns_capable+0x46/0x70
[    9.771948]  [<c10e059c>] do_mount+0x20c/0x6b0
[    9.771955]  [<c10a7044>] ? strndup_user+0x34/0x50
[    9.771958]  [<c10e0acc>] sys_mount+0x6c/0xa0
[    9.771964]  [<c13f2557>] sysenter_do_call+0x12/0x26

According to comment in bit_putcs() that kammloc() call only happens
when fbcon is drawing to a monochrome framebuffer (which is my case with
hid-picolcd).
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

Pull drm fixes from Dave Airlie:
 "Intel: edid fixes, power consumption fix, s/r fix, haswell fix

  Radeon: BIOS loading fixes for UEFI and Thunderbolt machines, better
  MSAA validation, lockup timeout fixes, modesetting fixes

  One udl dpms fix, one vmwgfx fix, a couple of trivial core changes.

  There is an export added to ACPI as part of the radeon bios fixes.

  I've also included the fbcon flashing cursor vs deinit race fix, that
  seems the simplest place to start"

Trivial conflict in drivers/video/console/fbcon.c due to me having
already applied the fbcon flashing cursor vs deinit race fix, and Dave
had added a comment in there too.

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
  fbcon: fix race condition between console lock and cursor timer (v1.1)
  drm: Add missing static storage class specifiers in drm_proc.c file
  drm/udl: dpms off the crtc when disabled.
  drm: Remove two unused fields from struct drm_display_mode
  drm: stop vmgfx driver explosion
  drm/radeon/ss: use num_crtc rather than hardcoded 6
  Revert "drm/radeon: fix bo creation retry path"
  drm/i915: use hsw rps tuning values everywhere on gen6+
  drm/radeon: split ATRM support out from the ATPX handler (v3)
  drm/radeon: convert radeon vfct code to use acpi_get_table_with_size
  ACPI: export symbol acpi_get_table_with_size
  drm/radeon: implement ACPI VFCT vbios fetch (v3)
  drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping
  drm/radeon: fix checking of MSAA renderbuffers on r600-r700
  drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700
  drm/radeon: init lockup timeout on ring init
  drm/radeon: avoid turning off spread spectrum for used pll
  drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads
  drm/i915: extract connector update from intel_ddc_get_modes() for reuse
  drm/i915: fix hsw uncached pte
  ...

Pull SCSI target fixes from Nicholas Bellinger:
 "The executive summary includes:

   - Post-merge review comments for tcm_vhost (MST + nab)
   - Avoid debugging overhead when not debugging for tcm-fc(FCoE) (MDR)
   - Fix NULL pointer dereference bug on alloc_page failulre (Yi Zou)
   - Fix REPORT_LUNs regression bug with pSCSI export (AlexE + nab)
   - Fix regression bug with handling of zero-length data CDBs (nab)
   - Fix vhost_scsi_target structure alignment (MST)

  Thanks again to everyone who contributed a bugfix patch, gave review
  feedback on tcm_vhost code, and/or reported a bug during their own
  testing over the last weeks.

  There is one other outstanding bug reported by Roland recently related
  to SCSI transfer length overflow handling, for which the current
  proposed bugfix has been left in queue pending further testing with
  other non iscsi-target based fabric drivers.

  As the patch is verified with loopback (local SGL memory from SCSI
  LLD) + tcm_qla2xxx (TCM allocated SGL memory mapped to PCI HW) fabric
  ports, it will be included into the next 3.6-rc-fixes PULL request."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Remove unused se_cmd.cmd_spdtl
  tcm_fc: rcu_deref outside rcu lock/unlock section
  tcm_vhost: Fix vhost_scsi_target structure alignment
  target: Fix regression bug with handling of zero-length data CDBs
  target/pscsi: Fix bug with REPORT_LUNs handling for SCSI passthrough
  tcm_vhost: Change vhost_scsi_target->vhost_wwpn to char *
  target: fix NULL pointer dereference bug alloc_page() fails to get memory
  tcm_fc: Avoid debug overhead when not debugging
  tcm_vhost: Post-merge review changes requested by MST
  tcm_vhost: Fix incorrect IS_ERR() usage in vhost_scsi_map_iov_to_sgl

Pull i2c-embedded fixes from Wolfram Sang:
 "Some bugfixes for the "embedded" part of the I2C subsystem.  The fixes
  affect mostly drivers which have been largely reworked lately and
  where regressions appeared."

* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
  i2c: tegra: protect suspend/resume callbacks with CONFIG_PM_SLEEP
  i2c: diolan-u2c: Fix master_xfer return code
  I2C: OMAP: xfer: fix runtime PM get/put balance on error
  i2c: nomadik: Add default configuration into the Nomadik I2C driver

Pull pwm fixes from Thierry Reding:
 "These patches fix the Samsung PWM driver and perform some minor
  cleanups like fixing checkpatch and sparse warnings.

  Two redundant error messages are removed and the Kconfig help text for
  the PWM subsystem is made more descriptive."

* tag 'for-3.6-rc3' of git://gitorious.org/linux-pwm/linux-pwm:
  pwm: Improve Kconfig help text
  pwm: core: Fix coding style issues
  pwm: vt8500: Fix coding style issue
  pwm: Remove a redundant error message when devm_request_and_ioremap fails
  pwm: samsung: add missing device pointer to struct pwm_chip
  pwm: Add missing static storage class specifiers in core.c file

Pull ceph fixes from Sage Weil:
 "Jim's fix closes a narrow race introduced with the msgr changes.  One
  fix resolves problems with debugfs initialization that Yan found when
  multiple client instances are created (e.g., two clusters mounted, or
  rbd + cephfs), another one fixes problems with mounting a nonexistent
  server subdirectory, and the last one fixes a divide by zero error
  from unsanitized ioctl input that Dan Carpenter found."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: avoid divide by zero in __validate_layout()
  libceph: avoid truncation due to racing banners
  ceph: tolerate (and warn on) extraneous dentry from mds
  libceph: delay debugfs initialization until we learn global_id