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authorRussell King <rmk+kernel@arm.linux.org.uk>2013-11-02 13:00:03 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-04-04 00:27:38 +0100
commit1b416c4b41351c3eb8fc42dbb4cd8eba463c0813 (patch)
tree887179d87d2611bf7fdba8a8274f3b8046e351cf /drivers/dma/omap-dma.c
parent104fce73fdbd174eb08a493eeb2920fd59e6d3f4 (diff)
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/dma/omap-dma.c')
-rw-r--r--drivers/dma/omap-dma.c7
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;