linux-toradex.git/include/video/atmel_lcdc.h, branch v3.4.84

atmel_lcdfb: fix 16-bpp modes on older SOCs

2013-03-20T20:05:00+00:00

commit a79eac7165ed62114e6ca197195aa5060a54f137 upstream.

Fix regression introduced by commit 787f9fd23283 ("atmel_lcdfb: support
16bit BGR:565 mode, remove unsupported 15bit modes") which broke 16-bpp
modes for older SOCs which use IBGR:555 (msb is intensity) rather
than BGR:565.

Use SOC-type to determine the pixel layout.

Tested on at91sam9263 and at91sam9g45.

Acked-by: Peter Korsgaard 
Signed-off-by: Johan Hovold 
Signed-off-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman

atmel_lcdfb: implement inverted contrast pwm

2011-03-22T07:23:44+00:00

This patch introduces lcdc->lcdcon_pol_negative which set CONTRAST_CTR
 register to inverted polarity.

Signed-off-by: Andreas Bießmann 
Signed-off-by: Paul Mundt

atmel_lcdfb: change irq_base definition to allow error reporting

2008-11-13T01:17:16+00:00

Changed because old the definition of unsigned long cannot be negative.

Signed-off-by: Nicolas Ferre 
Reported-by: Roel Kluin 
Cc: Haavard Skinnemoen 
Cc: Andrew Victor 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[ARM] 5228/1: Add the RGB555 wiring for the atmel LCD

2008-09-18T22:11:56+00:00

Add the RGB555 wiring for the atmel LCD.

Acked-by: Nicolas Ferre 
Acked-by: Haavard Skinnemoen 
Signed-off-by: Guillaume GARDET 
Signed-off-by: Russell King

atmel_lcdfb: add board parameter specify framebuffer memory size

2008-08-12T23:07:29+00:00

Specify how much physically continuous, DMA capable memory will be
allocated at driver initialization time.  This allow to create framebuffer
device with larger virtual resolution.  Combine with y-panning this can be
used to implement double buffering acceleration method.

Signed-off-by: Stanislaw Gruszka 
Acked-by: Haavard Skinnemoen 
Acked-by: Krzysztof Helt 
Cc: Nicolas Ferre 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

include/video/atmel_lcdc.h must #include

2008-07-26T19:00:01+00:00

This patch fixes the following compile error caused by commit
d22579b837358cbef12ccca5adaf7e93ae09ab7a ("atmel_lcdfb: FIFO underflow
management"):

  In file included from arch/avr32/boards/atstk1000/atstk1004.c:21:
  include/video/atmel_lcdc.h:40: error: field 'task' has incomplete type

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atmel_lcdfb: FIFO underflow management

2008-07-24T17:47:37+00:00

Manage atmel_lcdfb FIFO underflow

Resetting the LCD and DMA allows to fix screen shifting after a FIFO
underflow.  It follows reset sequence from errata "LCD Screen Shifting
After a Reset".

Signed-off-by: Nicolas Ferre 
Cc: Haavard Skinnemoen 
Cc: Andrew Victor 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atmel_lcdfb: wiring BGR to RGB color mode

2008-04-28T15:58:39+00:00

Adds different wiring mode for the LCD screen.

The legacy atmel LCDC IP uses a non standard color mode, "BGR-555.1" instead
"RGB-565".  The major part of graphic stacks for embedded systems uses only
"RGB-565".  It is possible to swap LCD IOs instead of doing this bit swapping
by software (See application note AT91SAM9 LCD Controller
http://www.atmel.com/dyn/resources/prod_documents/doc6300.pdf)

This wire swapping is done on the at91sam9rl-ek board (board code
using this patch will come later).

Signed-off-by: Nicolas Ferre 
Cc: David Brownell 
Cc: Hans-Christian Egtvedt 
Cc: Haavard Skinnemoen 
Cc: Andrew Victor 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atmel_lcdfb: suspend/resume support

2008-04-28T15:58:38+00:00

Teach atmel_lcdfb driver how to suspend/resume.

Note that the backlight control should probably do more of the same stuff:
turning off display power (more than just the backlight) and stopping the
clocks (and dma to drive the no-longer-seen display).  No point in wasting
power to generate images that can't be observed, after all...

Signed-off-by: David Brownell 
Signed-off-by: Nicolas Ferre 
Cc: Hans-Christian Egtvedt 
Cc: Haavard Skinnemoen 
Cc: Andrew Victor 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atmel_lcdfb: backlight control

2008-02-06T18:41:16+00:00

On the sam9 EK boards, the LCD backlight is hooked up to a PWM output from
the LCD controller.  It's controlled by "contrast" registers though.

This patch lets boards declare that they have that kind of backlight
control.  The driver can then export this control, letting screenblank and
other operations actually take effect ...  reducing the typically
substantial power drain from the backlight.

Note that it's not fully cooked
  - doesn't force backlight off during system suspend
  - the "power" and "blank" events may not be done right
This should be easily added in the future.

[nicolas.ferre@atmel.com: remove unneeded inline and rename functions]
Signed-off-by: David Brownell 
Signed-off-by: Nicolas Ferre 
Cc: Andrew Victor 
Cc: Russell King 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds