diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2015-12-14 23:47:42 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-12-18 08:47:26 +0300 |
| commit | 020c62ae38946cae01571a0b4e6f445dfdb7ec1c (patch) | |
| tree | 41cdbbab4b18de3734f87f351c839065752d0494 | |
| parent | 23e6723c060faf5a0fc8d7bfbec440d29943fa99 (diff) | |
| download | linux-020c62ae38946cae01571a0b4e6f445dfdb7ec1c.tar.xz | |
dmaengine: omap-dma: Add support for DMA filter mapping to slave devices
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@ti.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | drivers/dma/omap-dma.c | 4 | ||||
| -rw-r--r-- | include/linux/omap-dma.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index 1dfc71c90123..48f77c289cd3 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -1203,6 +1203,10 @@ 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 |