diff options
| author | Hongbo Zhang <hongbo.zhang@freescale.com> | 2013-09-26 11:33:43 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-11-13 09:56:27 +0100 |
| commit | 8de7a7d95049bdbe454ade7add08d893efe5a456 (patch) | |
| tree | 218e7b1f3982f57470ad8e519f3be9ae356a5bec /drivers/dma/fsldma.c | |
| parent | DMA: Freescale: Add new 8-channel DMA engine device tree nodes (diff) | |
| download | linux-8de7a7d95049bdbe454ade7add08d893efe5a456.tar.xz linux-8de7a7d95049bdbe454ade7add08d893efe5a456.zip | |
DMA: Freescale: update driver to support 8-channel DMA engine
This patch adds support to 8-channel DMA engine, thus the driver works for both
the new 8-channel and the legacy 4-channel DMA engines.
Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/fsldma.c')
| -rw-r--r-- | drivers/dma/fsldma.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index b3f3e90054f2..4e898121707b 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -1253,7 +1253,9 @@ static int fsl_dma_chan_probe(struct fsldma_device *fdev, WARN_ON(fdev->feature != chan->feature); chan->dev = fdev->dev; - chan->id = ((res.start - 0x100) & 0xfff) >> 7; + chan->id = (res.start & 0xfff) < 0x300 ? + ((res.start - 0x100) & 0xfff) >> 7 : + ((res.start - 0x200) & 0xfff) >> 7; if (chan->id >= FSL_DMA_MAX_CHANS_PER_DEVICE) { dev_err(fdev->dev, "too many channels for device\n"); err = -EINVAL; @@ -1426,6 +1428,7 @@ static int fsldma_of_remove(struct platform_device *op) } static const struct of_device_id fsldma_of_ids[] = { + { .compatible = "fsl,elo3-dma", }, { .compatible = "fsl,eloplus-dma", }, { .compatible = "fsl,elo-dma", }, {} @@ -1447,7 +1450,7 @@ static struct platform_driver fsldma_of_driver = { static __init int fsldma_init(void) { - pr_info("Freescale Elo / Elo Plus DMA driver\n"); + pr_info("Freescale Elo series DMA driver\n"); return platform_driver_register(&fsldma_of_driver); } @@ -1459,5 +1462,5 @@ static void __exit fsldma_exit(void) subsys_initcall(fsldma_init); module_exit(fsldma_exit); -MODULE_DESCRIPTION("Freescale Elo / Elo Plus DMA driver"); +MODULE_DESCRIPTION("Freescale Elo series DMA driver"); MODULE_LICENSE("GPL"); |