linux-toradex.git/drivers/dma, branch imx-android-r10.4

ENGR00141486-2 i.mx drivers: remove building warning message

2011-04-27T11:48:07+00:00

remove building warning message in i.mx drivers

Signed-off-by: Lily Zhang

ENGR00142410 MX50 PXP: Fix PxP operation may time out or hang up

2011-04-23T00:34:28+00:00

There might be a chance that clk_disable() is called when
PxP task is in process. Add this check before actually disable
PxP clock to fix this issue.

Signed-off-by: Ko Daiyu 
Signed-off-by: Robby Cai 
(cherry picked from commit 9b1a26230650c5d20c21bc614482cc5f6f786e46)

ENGR00137848 MX50 ePxP: Fix potential deadlock issue

2011-02-03T22:37:24+00:00

Remove spin lock within pxpdma_desc_put(),
because the caller has held the lock already.

Signed-off-by: Robby Cai

ENGR00136941 MX50: Fix crash issue caused by ePxP when playback video

2011-02-03T22:34:02+00:00

The root cause is list_del() are called twice on same entry in pxp irq handler.
Remove latter one fixes this issue.

Signed-off-by: Robby Cai

ENGR00136101-2 MX50: Only kick the clock off timer in irq handler.

2011-02-03T22:33:25+00:00

Here 'kick' means start the timer or postpone the timer.
By only kicking the timer in irq handler only when no task pending
in the queue, rather than each time we submit a new task, it should
perform better.

Signed-off-by: Robby Cai

ENGR00136101-1 MX50: Export timeout value to turn off ePxP clock when inactive

2011-02-03T22:33:23+00:00

Usage (timeout in millisecond, default is 600):
echo 2000 > /sys/devices/platform/mxc-pxp/clk_off_timeout

Signed-off-by: Robby Cai

ENGR00133729 ePxP: move clk_[en|dis]able outside spinlock section

2011-02-03T22:31:46+00:00

clk_enable and clk_disable could be sleep, so it can not be
surrounded with spin_lock/spin_unlock. This patch fixed it.

Signed-off-by: Robby Cai

ENGR00133593 ePXP: make clk_disable() be called only in process context

2010-11-12T15:12:32+00:00

The main reason is to allow for voltage scaling which will
happen as a result of calls to clk_[en|dis]able().
Voltage scaling is done using the Regulator API, which talks to PMIC
using SPI. SPI code can sleep and hence clk_[en|dis]able() cannot be
called in an ISR/tasklet etc contexts.

Signed-off-by: Robby Cai

ENGR00132537-1 - EPDC fb/PxP: Support conversion from grayscale to monochrome

2010-11-08T15:02:58+00:00

- User can specify a flag (EPDC_FLAG_FORCE_MONOCHROME) to have 8-bit grayscale
converted to monochrome (black or white) via processing in the PxP
(using the LUT).
- Added logic to check against the full videomode when identifying the
desired FB mode.  This allows support for multiple modes with the same
dimensions.

Signed-off-by: Danny Nold

ENGR00132607 MX50: Fix ePxP crash issue

2010-10-15T23:30:48+00:00

It can be reproduced by loop-running epdc rotation test.
The crash reason is the timing to disable ePxP clocks is critical, which
was not met before. This issue is fixed by disabling clocks only when
ePxP is inactive and no more task is on the wait queue.

Signed-off-by: Robby Cai