diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-11-02 14:00:03 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-04-04 01:27:38 +0200 |
| commit | 1b416c4b41351c3eb8fc42dbb4cd8eba463c0813 (patch) | |
| tree | 887179d87d2611bf7fdba8a8274f3b8046e351cf /drivers | |
| parent | dmaengine: omap-dma: use devm_kzalloc() to allocate omap_dmadev. (diff) | |
| download | linux-1b416c4b41351c3eb8fc42dbb4cd8eba463c0813.tar.xz linux-1b416c4b41351c3eb8fc42dbb4cd8eba463c0813.zip | |
dmaengine: omap-dma: provide a hook to get the underlying DMA platform ops
Provide and use a hook to obtain the underlying DMA platform operations
so that omap-dma.c can access the hardware more directly without
involving the legacy DMA driver.
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/dma/omap-dma.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index 98034e8c558f..4ac26bf0ad30 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -26,11 +26,13 @@ struct omap_dmadev { spinlock_t lock; struct tasklet_struct task; struct list_head pending; + struct omap_system_dma_plat_info *plat; }; struct omap_chan { struct virt_dma_chan vc; struct list_head node; + struct omap_system_dma_plat_info *plat; struct dma_slave_config cfg; unsigned dma_sig; @@ -573,6 +575,7 @@ static int omap_dma_chan_init(struct omap_dmadev *od, int dma_sig) if (!c) return -ENOMEM; + c->plat = od->plat; c->dma_sig = dma_sig; c->vc.desc_free = omap_dma_desc_free; vchan_init(&c->vc, &od->ddev); @@ -605,6 +608,10 @@ static int omap_dma_probe(struct platform_device *pdev) if (!od) return -ENOMEM; + od->plat = omap_get_plat_info(); + if (!od->plat) + return -EPROBE_DEFER; + dma_cap_set(DMA_SLAVE, od->ddev.cap_mask); dma_cap_set(DMA_CYCLIC, od->ddev.cap_mask); od->ddev.device_alloc_chan_resources = omap_dma_alloc_chan_resources; |