i2c: mediatek: add i2c first write then read optimization
For platform with auto restart support, between every transfer, i2c controller will trigger an interrupt and SW need to handle it to start new transfer. When doing write-then-read transfer, instead of restart mechanism, using WRRD mode to have controller send both transfer in one request to reduce latency. Signed-off-by: NLiguo Zhang <liguo.zhang@mediatek.com> Reviewed-by: NEddie Huang <eddie.huang@mediatek.com> Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
Showing
想要评论请 注册 或 登录