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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2013-07-11 14:35:46 +0200
committerMark Brown <broonie@linaro.org>2013-07-11 17:38:03 +0100
commit9ab1fac4829b3da0ba4d3f44d95d3e8ad13e6629 (patch)
tree43600b1923025bddb9134694c501c1a8caf587d9 /sound
parent2ebef44789223389708505e33c67d44e9f999d4a (diff)
downloadlinux-9ab1fac4829b3da0ba4d3f44d95d3e8ad13e6629.tar.bz2
ASoC: omap-mcbsp: Use different method for DMA request when booted with DT
The DMA resource no longer available via this API when booting with DT. When the board is booted with DT do not use platform_get_resource_byname(), instead set the dma_data.filter_data to the name of the DMA channel and omap-pcm can use this name to request the DMA channel. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/omap/mcbsp.c39
1 files changed, 22 insertions, 17 deletions
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
index eb68c7db1cf3..361e4c03646e 100644
--- a/sound/soc/omap/mcbsp.c
+++ b/sound/soc/omap/mcbsp.c
@@ -1012,28 +1012,33 @@ int omap_mcbsp_init(struct platform_device *pdev)
}
}
- res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
- if (!res) {
- dev_err(&pdev->dev, "invalid rx DMA channel\n");
- return -ENODEV;
- }
- /* RX DMA request number, and port address configuration */
- mcbsp->dma_req[1] = res->start;
- mcbsp->dma_data[1].filter_data = &mcbsp->dma_req[1];
- mcbsp->dma_data[1].addr = omap_mcbsp_dma_reg_params(mcbsp, 1);
- mcbsp->dma_data[1].maxburst = 4;
+ if (!pdev->dev.of_node) {
+ res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
+ if (!res) {
+ dev_err(&pdev->dev, "invalid tx DMA channel\n");
+ return -ENODEV;
+ }
+ mcbsp->dma_req[0] = res->start;
+ mcbsp->dma_data[0].filter_data = &mcbsp->dma_req[0];
- res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
- if (!res) {
- dev_err(&pdev->dev, "invalid tx DMA channel\n");
- return -ENODEV;
+ res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
+ if (!res) {
+ dev_err(&pdev->dev, "invalid rx DMA channel\n");
+ return -ENODEV;
+ }
+ mcbsp->dma_req[1] = res->start;
+ mcbsp->dma_data[1].filter_data = &mcbsp->dma_req[1];
+ } else {
+ mcbsp->dma_data[0].filter_data = "tx";
+ mcbsp->dma_data[1].filter_data = "rx";
}
- /* TX DMA request number, and port address configuration */
- mcbsp->dma_req[0] = res->start;
- mcbsp->dma_data[0].filter_data = &mcbsp->dma_req[0];
+
mcbsp->dma_data[0].addr = omap_mcbsp_dma_reg_params(mcbsp, 0);
mcbsp->dma_data[0].maxburst = 4;
+ mcbsp->dma_data[1].addr = omap_mcbsp_dma_reg_params(mcbsp, 1);
+ mcbsp->dma_data[1].maxburst = 4;
+
mcbsp->fclk = clk_get(&pdev->dev, "fck");
if (IS_ERR(mcbsp->fclk)) {
ret = PTR_ERR(mcbsp->fclk);