linux-toradex.git/drivers/video/mx3fb.c, branch v2.6.34-rc3

mx3fb: some debug and initialisation fixes

2010-02-03T02:11:21+00:00

Fix the kernel oops when dev_dbg is called with mx3_fbi->txd == NULL

Fix the late initialisation of mx3fb->backlight_level.  If not, in the
chain of function started by init_fb_chan(), in __blank() call
sdc_set_brightness(mx3fb, mx3fb->backlight_level) that will shut down the
CONTRAST PWM output.

Signed-off-by: Alberto Panizzo 
Acked-by: Guennadi Liakhovetski  gmx.de>
Cc: Sascha Hauer 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

i.MX31: fix framebuffer locking regressions

2009-08-07T17:39:56+00:00

Recent framebuffer locking patches first made affected systems unbootable,
then the dead-lock has been fixed but as of 2.6.31-rc4 the framebuffer on
mx3 machines doesn't work. Fix this.

Signed-off-by: Guennadi Liakhovetski 
Cc: Sascha Hauer 
Cc: Krzysztof Helt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mx3fb: fix regression with uninitalized fb_info->mm_lock mutex

2009-07-10T03:44:44+00:00

Remove call to the mx3fb_set_par() and the mx3fb_blank() before the
register_framebuffer().

This fixes a problem with uninitialized the fb_info->mm_lock mutex
introduced by the commit 537a1bf059f " fbdev: add mutex for fb_mmap
locking"

Signed-off-by: Krzysztof Helt 
Signed-off-by: Linus Torvalds

fbdev: add mutex for fb_mmap locking

2009-07-01T01:56:00+00:00

Add a mutex to avoid a circular locking problem between the mm layer
semaphore and fbdev ioctl mutex through the fb_mmap() call.

Also, add mutex to all places where smem_start and smem_len fields change
so the mutex inside the fb_mmap() is actually used.  Changing of these
fields before calling the framebuffer_register() are not mutexed.

This is 2.6.31 material.  It removes one lockdep (fb_mmap() and
register_framebuffer()) but there is still another one (fb_release() and
register_framebuffer()).  It also cleans up handling of the smem_start and
smem_len fields used by mutexed section of the fb_mmap().

Signed-off-by: Krzysztof Helt 
Cc: Peter Zijlstra 
Cc: "Rafael J. Wysocki" 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mx3fb: Issue prettier log message

2009-05-17T13:11:26+00:00

Without this patch we end up with a log message like
"mx3_sdc_fb mx3_sdc_fb: mx3fb: fb registered". That's two fb
too much for my taste.

Signed-off-by: Sascha Hauer

FB: fix unsafe use of disable_irq() in mx3fb.c

2009-05-13T07:46:19+00:00

mx3fb.c calls disable_irq() from a DMA callback, i.e., in an IRQ-handler
context, which has always been unsafe, and became deadly after the merge of
threaded interrupt handler support. Use disable_irq_nosync() instead.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Sascha Hauer

mx3fb: Fix compilation with CONFIG_PM

2009-05-05T07:37:17+00:00

Signed-off-by: Sascha Hauer

fbdev: i.MX31: fix panning, error handling, clean up

2009-04-07T15:31:09+00:00

1. check for errors returned from clk_get()
2. fix "Unbalanced enable for IRQ 160"
3. fix transmit descriptor handling in panning
4. clean frame buffer on blank - useful for OLED displays
5. formatting clean up

Signed-off-by: Guennadi Liakhovetski 
Cc: Dan Williams 
Cc: Sascha Hauer 
Cc: Krzysztof Helt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'imx-fb-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx into devel

2009-03-16T22:28:04+00:00

Conflicts:

	drivers/video/mx3fb.c

MX31 clkdev support

2009-03-13T09:34:32+00:00

This patch adds clkdev support for i.MX31. This is done in a
similar way done previously for i.MX27

Signed-off-by: Sascha Hauer