[lkml]   [2019]   [Dec]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[PATCH 0/5] spi: uniphier: Introduce DMA transfer mode
This series introduces DMA transfer mode into UniPhier SPI driver.
This only supports UniPhier XDMAC implemented in the SoC.

The DMA transfer mode uses FIFO threshold as a trigger to start DMA transfer,
however, the FIFO is limited to one word width due to alignment restiction
of the DMA controller.

Kunihiko Hayashi (5):
spi: uniphier: Fix FIFO threshold
spi: uniphier: Change argument of irq functions to private structure
spi: uniphier: Add handle_err callback function
spi: uniphier: Add SPI_LOOP to the capabilities
spi: uniphier: Add DMA transfer mode support

drivers/spi/spi-uniphier.c | 261 +++++++++++++++++++++++++++++++++++++++++----
1 file changed, 241 insertions(+), 20 deletions(-)


 \ /
  Last update: 2019-12-24 01:59    [W:0.078 / U:2.772 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site