[RFC PATCH v3 09/16] dmaengine: add dma_request_slave_channel_compat()
From: Matt Porter <hidden>
Date: 2012-10-18 13:29:11
Also in:
linux-devicetree, linux-mmc, linux-omap, linux-spi, lkml
Subsystem:
dma generic offload engine subsystem, the rest · Maintainers:
Vinod Koul, Linus Torvalds
Adds a dma_request_slave_channel_compat() wrapper which accepts both the arguments from dma_request_channel() and dma_request_slave_channel(). Based on whether the driver is instantiated via DT, the appropriate channel request call will be made. This allows for a much cleaner migration of drivers to the dmaengine DT API as platforms continue to be mixed between those that boot using DT and those that do not. Suggested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Matt Porter <redacted> --- include/linux/dmaengine.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index c88f302..11d9e25 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h@@ -1007,6 +1007,16 @@ void dma_run_dependencies(struct dma_async_tx_descriptor *tx); struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type); struct dma_chan *net_dma_find_channel(void); #define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y) +static inline struct dma_chan +*dma_request_slave_channel_compat(dma_cap_mask_t mask, dma_filter_fn fn, + void *fn_param, struct device *dev, + char *name) +{ + if (dev->of_node) + return dma_request_slave_channel(dev, name); + else + return dma_request_channel(mask, fn, fn_param); +} /* --- Helper iov-locking functions --- */
--
1.7.9.5