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authorLinus Walleij <linus.walleij@stericsson.com>2010-09-29 17:31:35 +0900
committerGrant Likely <grant.likely@secretlab.ca>2010-10-12 21:37:37 -0600
commitb1b6b9aa6fd32db97469e65d301ebc32dcd67992 (patch)
tree2a6f3f7d34a50a574854ea7495476f21fd6fcfce /include/linux/amba
parentcdbc8f042f4f2568bb58ba8bd50d0692f3059417 (diff)
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.h6
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;
};
/**