asedeno.scripts.mit.edu Git - linux.git/commit

author	Peng Ma <peng.ma@nxp.com>
	Thu, 13 Jun 2019 10:27:08 +0000 (10:27 +0000)
committer	Vinod Koul <vkoul@kernel.org>
	Tue, 25 Jun 2019 04:27:41 +0000 (09:57 +0530)
commit	002905eca5bedab08bafd9e325bbbb41670c7712
tree	8f2bb0e3be09201bdb435d8c35add80c97b89751	tree \| snapshot
parent	c24a5c735f87d0549060de31367c095e8810b895	commit \| diff

dmaengine: fsl-edma: support little endian for edma driver

Our platforms with below registers(CHCFG0 - CHCFG15) of eDMA
*-----------------------------------------------------------*
|     Offset   | Big endian Register| Little endian Register|
|--------------|--------------------|-----------------------|
|     0x0      |        CHCFG0      |           CHCFG3      |
|--------------|--------------------|-----------------------|
|     0x1      |        CHCFG1      |           CHCFG2      |
|--------------|--------------------|-----------------------|
|     0x2      |        CHCFG2      |           CHCFG1      |
|--------------|--------------------|-----------------------|
|     0x3      |        CHCFG3      |           CHCFG0      |
|--------------|--------------------|-----------------------|
|     ...      |        ......      |           ......      |
|--------------|--------------------|-----------------------|
|     0xC      |        CHCFG12     |           CHCFG15     |
|--------------|--------------------|-----------------------|
|     0xD      |        CHCFG13     |           CHCFG14     |
|--------------|--------------------|-----------------------|
|     0xE      |        CHCFG14     |           CHCFG13     |
|--------------|--------------------|-----------------------|
|     0xF      |        CHCFG15     |           CHCFG12     |
*-----------------------------------------------------------*

Current eDMA driver does not support Little endian, so this
patch is to improve edma driver to support little endian.

Signed-off-by: Peng Ma <peng.ma@nxp.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>