[v2,0/4] add uart DMA function

Message

Long Cheng Dec. 5, 2018, 8:42 a.m. UTC

In Mediatek SOCs, the uart can support DMA function.
Base on DMA engine formwork, we add the DMA code to support uart. And put the code under drivers/dma.

This series contains document bindings, Kconfig to control the function enable or not,
device tree including interrupt and dma device node, the code of UART DM

Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation

Long Cheng (4):
  dt-bindings: dma: uart: add uart dma bindings
  dmaengine: mtk_uart_dma: add Mediatek uart DMA support
  serial: 8250-mtk: add uart DMA support
  arm: dts: mt2701: add uart APDMA to device tree

 .../devicetree/bindings/dma/8250_mtk_dma.txt       |   33 +
 arch/arm64/boot/dts/mediatek/mt2712e.dtsi          |   50 ++
 drivers/dma/mediatek/8250_mtk_dma.c                |  894 ++++++++++++++++++++
 drivers/dma/mediatek/Kconfig                       |   11 +
 drivers/dma/mediatek/Makefile                      |    1 +
 drivers/tty/serial/8250/8250_mtk.c                 |  210 ++++-
 6 files changed, 1198 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
 create mode 100644 drivers/dma/mediatek/8250_mtk_dma.c

Comments

Greg KH Dec. 5, 2018, 10:03 a.m. UTC | #1

On Wed, Dec 05, 2018 at 04:42:56PM +0800, Long Cheng wrote:
> In Mediatek SOCs, the uart can support DMA function.
> Base on DMA engine formwork, we add the DMA code to support uart. And put the code under drivers/dma.
> 
> This series contains document bindings, Kconfig to control the function enable or not,
> device tree including interrupt and dma device node, the code of UART DM

I've queued up patches 1 and 3 from this series in my tty tree, thanks.

greg k-h

Vinod Koul Dec. 5, 2018, 4:31 p.m. UTC | #2

Hi Greg,

On 05-12-18, 11:03, Greg Kroah-Hartman wrote:
> On Wed, Dec 05, 2018 at 04:42:56PM +0800, Long Cheng wrote:
> > In Mediatek SOCs, the uart can support DMA function.
> > Base on DMA engine formwork, we add the DMA code to support uart. And put the code under drivers/dma.
> > 
> > This series contains document bindings, Kconfig to control the function enable or not,
> > device tree including interrupt and dma device node, the code of UART DM
> 
> I've queued up patches 1 and 3 from this series in my tty tree, thanks.

Do you mind not taking patch 2, I would like that to go thru dmaengine
tree

Thanks

Greg KH Dec. 5, 2018, 6:50 p.m. UTC | #3

On Wed, Dec 05, 2018 at 10:01:33PM +0530, Vinod Koul wrote:
> Hi Greg,
> 
> On 05-12-18, 11:03, Greg Kroah-Hartman wrote:
> > On Wed, Dec 05, 2018 at 04:42:56PM +0800, Long Cheng wrote:
> > > In Mediatek SOCs, the uart can support DMA function.
> > > Base on DMA engine formwork, we add the DMA code to support uart. And put the code under drivers/dma.
> > > 
> > > This series contains document bindings, Kconfig to control the function enable or not,
> > > device tree including interrupt and dma device node, the code of UART DM
> > 
> > I've queued up patches 1 and 3 from this series in my tty tree, thanks.
> 
> Do you mind not taking patch 2, I would like that to go thru dmaengine
> tree

Like I said, I only took patches 1 and 3...