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| author | Linus Walleij <linus.walleij@stericsson.com> | 2010-09-29 17:31:35 +0900 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-10-12 21:37:37 -0600 |
| commit | b1b6b9aa6fd32db97469e65d301ebc32dcd67992 (patch) | |
| tree | 2a6f3f7d34a50a574854ea7495476f21fd6fcfce /include/linux/amba | |
| parent | cdbc8f042f4f2568bb58ba8bd50d0692f3059417 (diff) | |
| download | lwn-b1b6b9aa6fd32db97469e65d301ebc32dcd67992.tar.gz lwn-b1b6b9aa6fd32db97469e65d301ebc32dcd67992.zip | |
spi/pl022: add PrimeCell generic DMA support
This extends the PL022 SSP/SPI driver with generic DMA engine
support using the PrimeCell DMA engine interface. Also fix up the
test code for the U300 platform.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/amba')
| -rw-r--r-- | include/linux/amba/pl022.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/amba/pl022.h b/include/linux/amba/pl022.h index abf26cc47a2b..db6a191ddcf7 100644 --- a/include/linux/amba/pl022.h +++ b/include/linux/amba/pl022.h @@ -228,6 +228,7 @@ enum ssp_chip_select { }; +struct dma_chan; /** * struct pl022_ssp_master - device.platform_data for SPI controller devices. * @num_chipselect: chipselects are used to distinguish individual @@ -235,11 +236,16 @@ enum ssp_chip_select { * each slave has a chipselect signal, but it's common that not * every chipselect is connected to a slave. * @enable_dma: if true enables DMA driven transfers. + * @dma_rx_param: parameter to locate an RX DMA channel. + * @dma_tx_param: parameter to locate a TX DMA channel. */ struct pl022_ssp_controller { u16 bus_id; u8 num_chipselect; u8 enable_dma:1; + bool (*dma_filter)(struct dma_chan *chan, void *filter_param); + void *dma_rx_param; + void *dma_tx_param; }; /** |