Messages in this thread Patch in this message | | | From | Maxime Ripard <> | Subject | [PATCH v5 50/61] dmaengine: at_xdmac: Declare slave capabilities for the generic code | Date | Mon, 17 Nov 2014 14:42:44 +0100 |
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From: Ludovic Desroches <ludovic.desroches@atmel.com>
Now that the generic slave caps code can make use of the device assigned capabilities, instead of relying on a callback to be implemented.
Make use of this code.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> --- drivers/dma/at_xdmac.c | 33 +++++++++++---------------------- 1 file changed, 11 insertions(+), 22 deletions(-)
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index 9906e7cfbe37..3951ba8982de 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -174,6 +174,13 @@ #define AT_XDMAC_MAX_CHAN 0x20 +#define AT_XDMAC_DMA_BUSWIDTHS\ + (BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED) |\ + BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |\ + BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |\ + BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |\ + BIT(DMA_SLAVE_BUSWIDTH_8_BYTES)) + enum atc_status { AT_XDMAC_CHAN_IS_CYCLIC = 0, AT_XDMAC_CHAN_IS_PAUSED, @@ -1224,27 +1231,6 @@ static void at_xdmac_free_chan_resources(struct dma_chan *chan) return; } -#define AT_XDMAC_DMA_BUSWIDTHS\ - (BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED) |\ - BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |\ - BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |\ - BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |\ - BIT(DMA_SLAVE_BUSWIDTH_8_BYTES)) - -static int at_xdmac_device_slave_caps(struct dma_chan *dchan, - struct dma_slave_caps *caps) -{ - - caps->src_addr_widths = AT_XDMAC_DMA_BUSWIDTHS; - caps->dst_addr_widths = AT_XDMAC_DMA_BUSWIDTHS; - caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); - caps->cmd_pause = true; - caps->cmd_terminate = true; - caps->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; - - return 0; -} - #ifdef CONFIG_PM static int atmel_xdmac_prepare(struct device *dev) { @@ -1414,7 +1400,10 @@ static int at_xdmac_probe(struct platform_device *pdev) atxdmac->dma.device_resume = at_xdmac_device_resume; atxdmac->dma.device_terminate_all = at_xdmac_device_terminate_all; atxdmac->dma.chancnt = nr_channels; - atxdmac->dma.device_slave_caps = at_xdmac_device_slave_caps; + atxdmac->dma.src_addr_widths = AT_XDMAC_DMA_BUSWIDTHS; + atxdmac->dma.dst_addr_widths = AT_XDMAC_DMA_BUSWIDTHS; + atxdmac->dma.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); + atxdmac->dma.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; /* Disable all chans and interrupts. */ at_xdmac_off(atxdmac); -- 2.1.1
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