diff options
| author | Vinod Koul <vkoul@kernel.org> | 2021-06-25 08:22:10 +0300 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2021-08-04 22:23:31 +0300 |
| commit | 0fa8266294754978da34d7ea785d621f51d939f2 (patch) | |
| tree | 128dbb54467bf4fa29c81251aec01d3db7c9c4cc /include/linux/qcom-geni-se.h | |
| parent | cb531cab62a19e97d8de0a2c9935daed93ec3736 (diff) | |
| download | linux-0fa8266294754978da34d7ea785d621f51d939f2.tar.xz | |
soc: qcom: geni: Add support for gpi dma
GPI DMA is one of the DMA modes supported on geni, this adds support to
enable that mode
Also do better documentation of the enum geni_se_xfer_mode.
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210625052213.32260-3-vkoul@kernel.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'include/linux/qcom-geni-se.h')
| -rw-r--r-- | include/linux/qcom-geni-se.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/qcom-geni-se.h b/include/linux/qcom-geni-se.h index 5114e2144b17..f5672785c0c4 100644 --- a/include/linux/qcom-geni-se.h +++ b/include/linux/qcom-geni-se.h @@ -8,11 +8,24 @@ #include <linux/interconnect.h> -/* Transfer mode supported by GENI Serial Engines */ +/** + * enum geni_se_xfer_mode: Transfer modes supported by Serial Engines + * + * @GENI_SE_INVALID: Invalid mode + * @GENI_SE_FIFO: FIFO mode. Data is transferred with SE FIFO + * by programmed IO method + * @GENI_SE_DMA: Serial Engine DMA mode. Data is transferred + * with SE by DMAengine internal to SE + * @GENI_GPI_DMA: GPI DMA mode. Data is transferred using a DMAengine + * configured by a firmware residing on a GSI engine. This DMA name is + * interchangeably used as GSI or GPI which seem to imply the same DMAengine + */ + enum geni_se_xfer_mode { GENI_SE_INVALID, GENI_SE_FIFO, GENI_SE_DMA, + GENI_GPI_DMA, }; /* Protocols supported by GENI Serial Engines */ |