and RX channel
are both enabled, TX channel is used to send RX cmd and RX channel is
used to receive data.
Signed-off-by: Carlos Song
Signed-off-by: Frank Li
---
Change for V4:
- According Aisheng's suggestion, fix code for improving readability.
- Add dma struct, when dma resource not read
From: Carlos Song
Add eDMA mode support for LPI2C.
There are some differences between TX DMA mode and RX DMA mode.
LPI2C MTDR register is Controller Transmit Data Register.
When lpi2c send data, it is tx cmd register and tx data fifo.
When lpi2c receive data, it is just a rx cmd register. LPI2C
From: Carlos Song
Add eDMA mode support for LPI2C.
There are some differences between TX DMA mode and RX DMA mode.
LPI2C MTDR register is Controller Transmit Data Register.
When LPI2C send data, it is tx cmd register and tx data fifo.
When LPI2C receive data, it is just a rx cmd register. LPI2C
From: Carlos Song
Add eDMA mode support for LPI2C.
There are some differences between TX DMA mode and RX DMA mode.
LPI2C MTDR register is Controller Transmit Data Register.
When lpi2c send data, it is tx cmd register and tx data fifo.
When lpi2c receive data, it is just a rx cmd register. LPI2C
From: Carlos Song
Add eDMA mode support for LPI2C.
There are some differences between TX DMA mode and RX DMA mode.
LPI2C MTDR register is Controller Transmit Data Register.
When lpi2c send data, it is tx cmd register and tx data fifo.
When lpi2c receive data, it is just a rx cmd register. LPI2C
From: Carlos Song
Add eDMA mode support for LPI2C.
There are some differences between TX DMA mode and RX DMA mode.
LPI2C MTDR register is Controller Transmit Data Register.
When lpi2c send data, it is tx cmd register and tx data fifo.
When lpi2c receive data, it is just a rx cmd register. LPI2C
