[RFC v4 2/4] CMDQ: Mediatek CMDQ driver

2016-04-18 Thread HS Liao
This patch is first version of Mediatek Command Queue(CMDQ) driver. The CMDQ is used to help read/write registers with critical time limitation, such as updating display configuration during the vblank. It controls Global Command Engine (GCE) hardware to achieve this requirement. Currently, CMDQ

[RFC v4 2/4] CMDQ: Mediatek CMDQ driver

2016-04-18 Thread HS Liao
This patch is first version of Mediatek Command Queue(CMDQ) driver. The CMDQ is used to help read/write registers with critical time limitation, such as updating display configuration during the vblank. It controls Global Command Engine (GCE) hardware to achieve this requirement. Currently, CMDQ