linux-toradex.git/drivers/dma, branch imx-android-r12

ENGR00154525 SDMA: SDMA not works when event number bigger than 32

2011-08-08T21:07:20+00:00

New sdma driver in 2.6.38 kernel not map event to channel correctly by
ignore events bigger than 32.

Fix it by remove this restriction

Signed-off-by: Zeng Zhaoming

ENGR00139247-6 DMA : add DMA support for imx6q

2011-08-09T03:05:36+00:00

add the dma support for imx6q.

Signed-off-by: Huang Shijie

ENGR00153740-4 imx-sdma: use mcu_2_shp script for ASRC

2011-07-27T07:05:18+00:00

The asrc_2_mcu script is not supported well by this driver.

Signed-off-by: Dong Aisheng

ENGR00152287-3 SDMA: Fix sdma cache bufferable issue

2011-07-18T19:43:39+00:00

MX6Q desclare dma memory bufferable, which cause sdma
load context failed in 60% possibility.

To fix it, we need to add dsb to flush write buffer before
start dma transfer.

Signed-off-by: Zeng Zhaoming

ENGR00152287-2 SDMA: Add SDMA support for MX6Q

2011-07-18T19:43:25+00:00

Add sdma support for mx6q.
add mx6 dependency for sdma, and add sdma mx6 firmware.

Note: firmware not release by owner, this version only for test.

Signed-off-by: Zeng Zhaoming

ENGR00142950-6 - PxP DMA: Port PxP driver to 2.6.38 kernel

2011-05-10T18:41:35+00:00

- Add drivers/dma/pxp and all PxP driver files within

Signed-off-by: Danny Nold

ENGR00143126-3 ARM: add DMA driver for mx50

2011-05-09T08:13:07+00:00

add the DMA driver for mx50.

Signed-off-by: Huang Shijie

ENGR00142734 SDMA: Fix sdma incorrect lock usage.

2011-05-04T15:11:57+00:00

In very seldom, play audio will caused system hangs in 2.6.38 kernel.

This is caused by new sdma driver wrongly enable irq after enable channel.

Signed-off-by: Zeng Zhaoming

ENGR00141732 SDMA: Fix bootup stop at sdma firmware loading

2011-04-07T01:22:20+00:00

Linux 2.6.38 kernel bootup slow, it stopped at sdma firmware
loading for about one minute.

It is caused by firmware store on rootfs lib/firmware directory,
while sdma initialization happens before rootfs mounted.

To fix it, we have to build firmware in kernel image.
Signed-off-by: Zeng Zhaoming

dmaengine: mxs-dma: add dma support for i.MX23/28

2011-03-31T06:58:13+00:00

This patch adds dma support for Freescale MXS-based SoC i.MX23/28,
including apbh-dma and apbx-dma.

* apbh-dma and apbx-dma are supported in the driver as two mxs-dma
  instances.

* apbh-dma is different between mx23 and mx28, hardware version
  register is used to differentiate.

* mxs-dma supports pio function besides data transfer.  The driver
  uses dma_data_direction DMA_NONE to identify the pio mode, and
  steals sgl and sg_len to get pio words and numbers from clients.

* mxs dmaengine has some very specific features, like sense function
  and the special NAND support (nand_lock, nand_wait4ready).  These
  are too specific to implemented in generic dmaengine driver.

* The driver refers to imx-sdma and only a single descriptor is
  statically assigned to each channel.

Signed-off-by: Shawn Guo 
Signed-off-by: Vinod Koul