From: Barry Song <[email protected]> sirf-dma driver enabled generic dt binding for dma channels. see here we remove self-defined dma channel prop and move to use generic dma_request_slave_channel. related changes in dts is something like: dmas = <&dmac1 9>, <&dmac1 4>; dma-names = "rx", "tx";
Signed-off-by: Barry Song <[email protected]> --- drivers/spi/spi-sirf.c | 26 ++------------------------ 1 file changed, 2 insertions(+), 24 deletions(-) diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index c400ab7..a213e87 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -22,7 +22,6 @@ #include <linux/dmaengine.h> #include <linux/dma-direction.h> #include <linux/dma-mapping.h> -#include <linux/sirfsoc_dma.h> #define DRIVER_NAME "sirfsoc_spi" @@ -585,8 +584,6 @@ static int spi_sirfsoc_probe(struct platform_device *pdev) struct spi_master *master; struct resource *mem_res; int num_cs, cs_gpio, irq; - u32 rx_dma_ch, tx_dma_ch; - dma_cap_mask_t dma_cap_mask; int i; int ret; @@ -597,20 +594,6 @@ static int spi_sirfsoc_probe(struct platform_device *pdev) goto err_cs; } - ret = of_property_read_u32(pdev->dev.of_node, - "sirf,spi-dma-rx-channel", &rx_dma_ch); - if (ret < 0) { - dev_err(&pdev->dev, "Unable to get rx dma channel\n"); - goto err_cs; - } - - ret = of_property_read_u32(pdev->dev.of_node, - "sirf,spi-dma-tx-channel", &tx_dma_ch); - if (ret < 0) { - dev_err(&pdev->dev, "Unable to get tx dma channel\n"); - goto err_cs; - } - master = spi_alloc_master(&pdev->dev, sizeof(*sspi) + sizeof(int) * num_cs); if (!master) { dev_err(&pdev->dev, "Unable to allocate SPI master\n"); @@ -674,18 +657,13 @@ static int spi_sirfsoc_probe(struct platform_device *pdev) sspi->bitbang.master->dev.of_node = pdev->dev.of_node; /* request DMA channels */ - dma_cap_zero(dma_cap_mask); - dma_cap_set(DMA_INTERLEAVE, dma_cap_mask); - - sspi->rx_chan = dma_request_channel(dma_cap_mask, (dma_filter_fn)sirfsoc_dma_filter_id, - (void *)rx_dma_ch); + sspi->rx_chan = dma_request_slave_channel(&pdev->dev, "rx"); if (!sspi->rx_chan) { dev_err(&pdev->dev, "can not allocate rx dma channel\n"); ret = -ENODEV; goto free_master; } - sspi->tx_chan = dma_request_channel(dma_cap_mask, (dma_filter_fn)sirfsoc_dma_filter_id, - (void *)tx_dma_ch); + sspi->tx_chan = dma_request_slave_channel(&pdev->dev, "tx"); if (!sspi->tx_chan) { dev_err(&pdev->dev, "can not allocate tx dma channel\n"); ret = -ENODEV; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
