[PATCH V02 5/5] dmaengine: omap-dma: Add support for DMA filter mapping to slave devices

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Add support for providing device to filter_fn mapping so client drivers
can switch to use the dma_request_chan() API.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
---
 drivers/dma/omap-dma.c   | 4 ++++
 include/linux/omap-dma.h | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
index f86827ac0c8a..9794b073d7d7 100644
--- a/drivers/dma/omap-dma.c
+++ b/drivers/dma/omap-dma.c
@@ -1153,6 +1153,10 @@ static int omap_dma_probe(struct platform_device *pdev)
 			return rc;
 	}
 
+	od->ddev.filter.map = od->plat->slave_map;
+	od->ddev.filter.mapcnt = od->plat->slavecnt;
+	od->ddev.filter.fn = omap_dma_filter_fn;
+
 	rc = dma_async_device_register(&od->ddev);
 	if (rc) {
 		pr_warn("OMAP-DMA: failed to register slave DMA engine device: %d\n",
diff --git a/include/linux/omap-dma.h b/include/linux/omap-dma.h
index 88fa8af2b937..1d99b61adc65 100644
--- a/include/linux/omap-dma.h
+++ b/include/linux/omap-dma.h
@@ -267,6 +267,9 @@ struct omap_dma_reg {
 	u8	type;
 };
 
+#define SDMA_FILTER_PARAM(hw_req)	((int[]) { (hw_req) })
+struct dma_slave_map;
+
 /* System DMA platform data structure */
 struct omap_system_dma_plat_info {
 	const struct omap_dma_reg *reg_map;
@@ -278,6 +281,9 @@ struct omap_system_dma_plat_info {
 	void (*clear_dma)(int lch);
 	void (*dma_write)(u32 val, int reg, int lch);
 	u32 (*dma_read)(int reg, int lch);
+
+	const struct dma_slave_map *slave_map;
+	int slavecnt;
 };
 
 #ifdef CONFIG_ARCH_OMAP2PLUS
-- 
2.6.4

--
To unsubscribe from this list: send the line "unsubscribe dmaengine" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux PCI]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux