Commit Graph

61 Commits

Author SHA1 Message Date
Paul Mundt
1928e87bcf Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	drivers/video/sh_mobile_lcdcfb.c

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-01-06 18:27:34 +09:00
Magnus Damm
417d48274e fbdev: sh_mobile_lcdcfb: Enable 32 bpp and 24 bpp support
This patch extends the LCDC driver with 24 bpp
and 32 bpp support.

These modes have been kept disabled earlier due
to dependencies between the potential two LCDC
channels that are exported as two separate
framebuffer devices. The dependency boils down
to a byte swap register that is shared between
multiple channels.

With this patch applied all single channel LCDC
hardware can chose freely from 16, 24 and 32 bpp.
Dual channel LCDC must stick to the same setup
for both channels.

Without this patch only 16 bpp is fully supported.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-01-06 15:43:18 +09:00
Guennadi Liakhovetski
cb59bfc590 fbdev: sh_mobile_lcdc: increase maximum framebuffer size to support 1080p
LCDC hardware can support 1920x1080 formats, adjust the driver to cover them.
Besides, instead of guessing some "reasonable" validity checks, only verify
values in .fb_check_var(), that we are sure, we cannot support.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-12-27 23:06:29 +09:00
Guennadi Liakhovetski
e0b9fb2626 fbdev: sh-mobile: restore display size configuration
An earlier patch replaced open-coded video-mode configuration from
platform data by a call to fb_videomode_to_var(), thereby setting
ofdisplay sizes have been accidentally lost. Restore them.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-12-22 16:28:26 +09:00
Paul Mundt
7ccbefe07e Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-12-22 12:56:10 +09:00
Arnd Hannemann
cc267ec5df fbdev: sh_mobile_lcdcfb: fix bug in reconfig()
The function sh_mobile_fb_reconfig() contained a bug,
which caused the line_length to be set wrongly, if a mode
with a different X-resolution than the default one was chosen.
This caused 1080p24 mode to not work on AP4EVB.
Additionally the notifier chain was also called with the wrong
mode.

This patch fixes this, by using the X-resolution of the new
mode instead of the old one to calculate line length and
hands over the correct mode to the notifier chain.

Signed-off-by: Arnd Hannemann <arnd@arndnet.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-16 10:11:28 +09:00
Paul Mundt
830539d143 fbdev: sh_mobile_lcdcfb: fix up compiler warnings.
CC      drivers/video/sh_mobile_lcdcfb.o
drivers/video/sh_mobile_lcdcfb.c: In function 'sh_mobile_check_var':
drivers/video/sh_mobile_lcdcfb.c:922: warning: format '%u' expects type 'unsigned int', but argument 11 has type 'long unsigned int'

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-10 17:51:44 +09:00
Guennadi Liakhovetski
d2ecbab596 fbdev: sh_mobile_lcdc: increase maximum framebuffer size to support 1080p
LCDC hardware can support 1920x1080 formats, adjust the driver to cover them.
Besides, instead of guessing some "reasonable" validity checks, only verify
values in .fb_check_var(), that we are sure, we cannot support.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-10 17:24:09 +09:00
Guennadi Liakhovetski
5fd284e6cd fbdev: sh_mobile_lcdc: use correct number of modes, when using the default
Fix zero mode number, when using the default 720p mode.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-10 16:53:21 +09:00
Guennadi Liakhovetski
5ae0cf82df fbdev: sh_mobile_lcdc: use the standard CEA-861 720p timing
sh_mobile_lcdcfb.c has a hard-coded 720p video mode, used as default, if none
is explicitly specified by the platform. Adjust its timing to match the CEA
standard. Also add an explicit refresh rate value, which is needed, when used
with HDMI, to be able to recognise the default 720p mode as a pre-programmed
VIC #4.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-10 16:53:17 +09:00
Russell King
b3773301c4 Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/genesis-2.6 into devel-stable
Conflicts:
	drivers/video/sh_mobile_hdmi.c
2010-10-28 20:14:38 +01:00
Guennadi Liakhovetski
6031f34738 fbdev: sh_mobile_lcdc: relax .check_var() HSYNC test
Some valid and supported video modes have .hsync_len > 120.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-15 19:00:56 +09:00
Guennadi Liakhovetski
c44f9f76d2 fbdev: sh_mobile_lcdc: make platform videomode table optional
Add a default 720p mode to the sh_mobile_lcdc driver to be used, when no
videomode is specified in the platform data. This can be used, e.g., with HDMI.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-15 19:00:56 +09:00
Magnus Damm
1ffbb037d8 sh: free-without-alloc fix for sh_mobile_lcdcfb
Without this fix the LCDC driver will try to free
framebuffer memory even though the allocation failed.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-13 19:16:44 +09:00
Guennadi Liakhovetski
dd210503b7 fbdev: sh_mobile_lcdc: reconfigure the framebuffer, when free
Currently the sh_mobile_lcdc driver only reconfigures the hardware interface,
when a new monitor is plugged in. This patch adds support for dynamic
framebuffer reconfiguration, when no user is holding the framebuffer device
node open.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-16 16:36:17 +09:00
Guennadi Liakhovetski
afe417c035 fbdev: sh_mobile_hdmi: support hot-plugging of different HDMI / DVI displays
With this patch hot-plugging of an HDMI or a DVI monitor can select a different
video mode and reconfigure the LCDC and HDMI controllers accordingly. Due to a
lack of a standard API to inform framebuffer users of a changed video mode, the
framebuffer configuration is preserved regardless of a specific mode, selected
for the monitor. As described in a previous patch, this leads to smaller
framebuffers being displayed on larger monitors or a part of a larger
framebuffer being displayed on a smaller resolution monitor.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:23:39 +09:00
Guennadi Liakhovetski
1c120deb60 fbdev: sh_mobile_lcdcfb: separate display variable data from framebuffer data
This is a preparation for a patch, that shall allow displaying of a smaller
framebuffer on a bigger display and of a part of a bigger framebuffer on a
smaller display.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:23:26 +09:00
Guennadi Liakhovetski
6de9edd5bd fbdev: sh_mobile_hdmi: implement locking
The SH-Mobile HDMI driver runs in several contexts: ISR, delayed work-queue,
task context, when called from the sh_mobile_lcdc framebuffer driver. This
creates ample race possibilities. Even though most these races are purely
theoretical, it is better to close them. To trace fb_info validity we install a
notification callback in the HDMI driver, and the only way for it to get to
driver internal data is by using struct sh_mobile_lcdc_chan, therefore it had
to be extracted into a separate common header.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:23:21 +09:00
Guennadi Liakhovetski
71d3b0fcad fbdev: sh_mobile_lcdcfb: allocate memory, sufficient for the biggest mode
Now, that we add support for multiple modes to the sh_mobile_lcdcfb driver, it
has to allocate memory, sufficient for the biggest of them.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:22:52 +09:00
Guennadi Liakhovetski
baf1637499 fbdev: sh_mobile_lcdcfb: fix notifier callback return codes
Notifier callbacks have to return either one of NOTIFY_* codes or a negative
errno, converted to a suitable value by the notifier_from_errno() inline, if
the notifier chain shall not be continued.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:22:46 +09:00
Guennadi Liakhovetski
44432407d9 fbdev: sh_mobile_lcdcfb: Support multiple video modes in platform data
This is a preparation for HDMI hotplug support. This patch just moves all
platform defined video modes for the sh_mobile_lcdcfb driver to separate
arrays and switches all users to use element 0 of that array, so, this patch
doesn't introduce any functional changes and as such should not cause any
regressions.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:22:38 +09:00
Guennadi Liakhovetski
01ac25b59f fbdev: sh_mobile_lcdcfb: minor simplifications and clean up
Remove an unused variable and simplify several pointer dereferences.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:22:32 +09:00
Guennadi Liakhovetski
5ef6b505d9 fbdev: sh_mobile_lcdcfb: fix more error paths
This patch fixes the following two erroneous error paths:

hw_usecnt is allocated with a value of 0, therefore in an early error case,
calling sh_mobile_lcdc_clk_off() will wrongly conclude, that hw_usecnt has
already been incremented. Then sh_mobile_lcdc_runtime_suspend() will be called,
which will access uninitialised data fields and crash the kernel.

sh_mobile_lcdc_stop() can be called before framebuffer has been allocated, then
ch->info is NULL and dereferencing it will Oops too.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:22:25 +09:00
Guennadi Liakhovetski
14177a5e56 fbdev: sh_mobile_lcdcfb: use fb_videomode_to_var() instead of open-coding
Use the standard fb_videomode_to_var() instead of filling fb_var_screeninfo
fields manually in, also remove a redundant memset(0).

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-14 17:22:11 +09:00
Guennadi Liakhovetski
6011bdeaa6 fbdev: sh-mobile: HDMI support for SH-Mobile SoCs
Some SH-Mobile SoCs have an HDMI controller and a PHY, attached to one of their
LCDC interfaces. This patch adds a preliminary static support for such
controllers, this means, that only the 720p mode is handled ATM. Support for
more modes and a dynamic switching between them will be added by a follow up
patch.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-04 16:12:15 +09:00
Guennadi Liakhovetski
c243939817 sh: add a parameter to LCDC driver's .display_on() callback
HDMI support for the sh_mobile_lcdc framebuffer driver will require a 'struct
fb_info *' pointer for its .display_on() callback. While at it fix kfr2r09
framebuffer modular build.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-04 16:12:11 +09:00
Guennadi Liakhovetski
dba6f385b8 fbdev: sh-mobile-lcdc: fix potential Oops in SH-Mobile LCDC framebuffer driver
sh_mobile_lcdc_setup_clocks() can perform IO, therefore it has to be called
after ioremap(). Also check return code of ioremap() and use resource_size()
instead of open-coding it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-08-04 16:03:02 +09:00
Guennadi Liakhovetski
e1f42ff4f0 fbdev: fix erroneous index in drivers/video/sh_mobile_lcdcfb.c
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-25 12:23:22 +09:00
Guennadi Liakhovetski
8bed90557d sh: fix a number of Oopses and leaks in SH framebuffer driver
Fix a number of Oopses, memory leaks and unbalanced calls on error paths in
sh_mobile_lcdcfb.c.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-06 13:24:56 +09:00
Tejun Heo
5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Uwe Kleine-König
c2e13037e6 platform-drivers: move probe to .devinit.text in drivers/video
A pointer to a probe callback is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Adrian Bunk <bunk@stusta.de>
Cc: Alberto Mardegan <mardy@users.sourceforge.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andriy Skulysh <askulysh@gmail.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Chandramouli Narayanan <mouli@linux.intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Frans Pop <elendil@planet.nl>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Helge Deller <deller@gmx.de>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Ian Molton <spyro@f2s.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Kaj-Michael Lang <milang@tal.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: linux-fbdev-devel@lists.sourceforge.net
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Magnus Damm <damm@igel.co.jp>
Cc: Martin Michlmayr <tbm@cyrius.com>
Cc: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Pavel Machek <pavel@suse.cz>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Roland Stigge <stigge@antcom.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vincent Sanders <vince@simtec.co.uk>
Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: James Simmons <jsimmons@infradead.org>
Acked-by: Peter Jones <pjones@redhat.com>
Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:50 -08:00
Phil Edworthy
92e1f9a7ed video: sh_mobile_lcdcfb: Fix panning.
Fixed SH-Mobile panning. Previously the address of the frame to be displayed
was updated in the VSync end interrupt. This meant there was a minimum of 1
frame bewteen calling FBIOPAN_DISPLAY ioctl and the pan occuring. This meant
that apps were not able to use the FBIO_WAITFORVSYNC ioctl to wait for the
pan to complete. This patch moves the write to LDSA1R mirror reg into the
pan ioctl.  Tested on MS7724 board against 2.6.33-rc7

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-16 13:30:29 +09:00
Phil Edworthy
40331b21f5 video: sh_mobile_lcdcfb: Add wait for vsync.
Added FBIO_WAITFORVSYNC ioctl for SH-Mobile devices.
Tested on MS7724 and MigoR boards against 2.6.33-rc7.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-16 13:30:27 +09:00
Linus Torvalds
9b2831704e Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (33 commits)
  sh: Fix test of unsigned in se7722_irq_demux()
  sh: mach-ecovec24: Add FSI sound support
  sh: mach-ecovec24: Add mt9t112 camera support
  sh: mach-ecovec24: Add tw9910 support
  sh: MSIOF/mmc_spi platform data for the Ecovec24 board
  sh: ms7724se: Add ak4642 support
  sh: Fix up FPU build for SH5
  sh: Remove old early serial console code V2
  sh: sh5 scif pdata (sh5-101/sh5-103)
  sh: sh4a scif pdata (sh7757/sh7763/sh7770/sh7780/sh7785/sh7786/x3)
  sh: sh4a scif pdata (sh7343/sh7366/sh7722/sh7723/sh7724)
  sh: sh4 scif pdata (sh7750/sh7760/sh4-202)
  sh: sh3 scif pdata (sh7705/sh770x/sh7710/sh7720)
  sh: sh2a scif pdata (sh7201/sh7203/sh7206/mxg)
  sh: sh2 scif pdata (sh7616)
  sh-sci: Extend sh-sci driver with early console V2
  sh: Stub in P3 ioremap support for nommu parts.
  sh: wire up vmallocinfo support in ioremap() implementations.
  sh: Make the unaligned trap handler always obey notification levels.
  sh: Couple kernel and user write page perm bits for CONFIG_X2TLB
  ...
2009-12-16 10:29:52 -08:00
Alexey Dobriyan
471452104b const: constify remaining dev_pm_ops
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15 08:53:25 -08:00
Magnus Damm
ef61aae4dd sh: add a start_transfer() callback to the LCDC driver
This patch adds a ->start_transfer() callback to the
driver sh_mobile_lcdcfb.c. The callback is used to
program the LCDC panel in the case of one-shot mode.

Needed by the LCD controller used on the KFR2R09 board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-09 12:40:44 +09:00
Paul Mundt
5c1a56b5f6 video: sh_mobile_lcdcfb: Don't attempt to map zero-length scatterlists.
More aggressive DMA mapping debugging has uncovered a long-standing
buglet in the way that the sh_mobile_lcdcfb driver implements its
deferred I/O callback. When used as a console driver the acceleration
routines are called by the kernel which subsequently cause the deferred
I/O work to be scheduled, resulting in the deferred I/O callback being
entered without any dirty pages on the pagelist (the normal case for
userspace accesses). It's also possible to get in to this situation via
explicit calling of fsync() when nothing has dirtied the region.

Unfortunately it's not sufficient to skip over the callback when the
pagelist is empty given the console driver use case, so instead the
callback has to conditionalize the work for panel updates and DMA
mapping depending on whether anything is resident on the pagelist or
not.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-04 15:59:04 +09:00
Phil Edworthy
a6f15ade97 video: sh_mobile_lcdcfb: use both register sets for display panning
Switch to using both register sets - side A and side B for display panning.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-09-15 21:08:22 +09:00
Phil Edworthy
9dd38819c2 video: sh_mobile_lcdcfb: implement display panning
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-09-15 21:08:21 +09:00
Magnus Damm
0246c4712c video: Runtime PM for SuperH Mobile LCDC
This patch modifies the SuperH Mobile LCDC framebuffer driver
to support Runtime PM. The driver is using the functions

 - pm_runtime_get_sync()
 - pm_runtime_put_sync()

to inform the bus code if the hardware is idle or not. If the
hardware is idle then the bus code may call the runtime dev_pm_ops
callbacks to save and restore state. pm_runtime_resume() is used
to allow the driver to access the hardware from probe().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-23 18:03:19 +09:00
Paul Mundt
60e0a4c7ad Merge branch 'sh/stable-updates' 2009-08-15 12:59:42 +09:00
Magnus Damm
21bc1f024d sh: skip disabled LCDC channels
This patch updates the SuperH Mobile LCDC driver to skip
over disabled channels. Without this patch suspend-to-ram
operation will crash if deferred io is enabled.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:58:42 +09:00
Magnus Damm
ec56b66fed sh: 18-bit SYS panel fix for SuperH Mobile LCDC
Fix the SuperH Mobile LCDC driver to make use of the full
18-bit DRD field in the LDDRDR register. Without this patch
only 16-bit register access is possible. Needed by 18-bit
SYS panels such as the one used on kfr2r09.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-07 03:55:08 +09:00
Magnus Damm
909f10de5d sh: LCDC SYS bus access wait fix
Update the SuperH Mobile LCDC driver to wait for SYS bus to
become idle after reading or writing. This is needed by the
kfr2r09 board, but also fixes potential problems on other
boards making use of the LCDC in a SYS configuration.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-07 03:54:52 +09:00
Paul Mundt
f686d8c11c Merge branches 'sh/ftrace' and 'sh/stable-updates' 2009-07-11 10:08:33 +09:00
Paul Mundt
e33afddca1 video: sh_mobile_lcdcfb: Convert to framebuffer_alloc().
All fb_info structures need to be allocated with framebuffer_alloc() due
to special initialization. Switch over to it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-07 11:24:32 +09:00
Paul Mundt
727dc3fde8 video: sh_mobile_lcdcfb: depends on HAVE_CLK.
This deifdefs the driver and adds an explicit HAVE_CLK dependency. Given
that all SH platforms provide it, there is no reason to keep this as an
ifdef. Other architectures that implement support for this driver will
already have to provide clock framework support for timers and so on
already, so adding this as an additional dependency is not terribly
probematic.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-07 10:30:02 +09:00
Paul Mundt
1c6a307a54 sh: LCDC dcache flush for deferred io
Since writenotify on uncached vmas is unsupported in 2.6.31,
live with cached framebuffer memory in the deferred io
case for now and flush the dcache before forcing refresh.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Magnus damm <damm@igel.co.jp>
2009-07-02 03:34:37 +09:00
Magnus Damm
8e9bb19ef9 video: stop sh_mobile_lcdcfb only if started
This patch fixes the LCDC driver to avoid calling the
function sh_mobile_lcdc_start_stop(priv, 0) unless the
same function has been called before to start the LCDC
hardware.

Triggered when sh_mobile_lcdcfb.c failed to probe() due to
missing MSTP clocks.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-22 13:19:15 +09:00
Linus Torvalds
0c93ea4064 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (61 commits)
  Dynamic debug: fix pr_fmt() build error
  Dynamic debug: allow simple quoting of words
  dynamic debug: update docs
  dynamic debug: combine dprintk and dynamic printk
  sysfs: fix some bin_vm_ops errors
  kobject: don't block for each kobject_uevent
  sysfs: only allow one scheduled removal callback per kobj
  Driver core: Fix device_move() vs. dpm list ordering, v2
  Driver core: some cleanup on drivers/base/sys.c
  Driver core: implement uevent suppress in kobject
  vcs: hook sysfs devices into object lifetime instead of "binding"
  driver core: fix passing platform_data
  driver core: move platform_data into platform_device
  sysfs: don't block indefinitely for unmapped files.
  driver core: move knode_bus into private structure
  driver core: move knode_driver into private structure
  driver core: move klist_children into private structure
  driver core: create a private portion of struct device
  driver core: remove polling for driver_probe_done(v5)
  sysfs: reference sysfs_dirent from sysfs inodes
  ...

Fixed conflicts in drivers/sh/maple/maple.c manually
2009-03-26 11:17:04 -07:00