diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.4/011-dmaengine-core-Introduce-new-universal-API-to-reques.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.4/011-dmaengine-core-Introduce-new-universal-API-to-reques.patch | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/target/linux/apm821xx/patches-4.4/011-dmaengine-core-Introduce-new-universal-API-to-reques.patch b/target/linux/apm821xx/patches-4.4/011-dmaengine-core-Introduce-new-universal-API-to-reques.patch index 0296714639..7a0e26f6a3 100644 --- a/target/linux/apm821xx/patches-4.4/011-dmaengine-core-Introduce-new-universal-API-to-reques.patch +++ b/target/linux/apm821xx/patches-4.4/011-dmaengine-core-Introduce-new-universal-API-to-reques.patch @@ -69,11 +69,9 @@ Signed-off-by: Vinod Koul <vinod.koul@intel.com> include/linux/dmaengine.h | 51 +++++++++++++++++++--- 3 files changed, 127 insertions(+), 36 deletions(-) -diff --git a/Documentation/dmaengine/client.txt b/Documentation/dmaengine/client.txt -index 11fb87f..4b04d89 100644 --- a/Documentation/dmaengine/client.txt +++ b/Documentation/dmaengine/client.txt -@@ -22,25 +22,14 @@ The slave DMA usage consists of following steps: +@@ -22,25 +22,14 @@ The slave DMA usage consists of followin Channel allocation is slightly different in the slave DMA context, client drivers typically need a channel from a particular DMA controller only and even in some cases a specific channel is desired. @@ -86,7 +84,8 @@ index 11fb87f..4b04d89 100644 - void *filter_param); - where dma_filter_fn is defined as: - typedef bool (*dma_filter_fn)(struct dma_chan *chan, void *filter_param); -- ++ struct dma_chan *dma_request_chan(struct device *dev, const char *name); + - The 'filter_fn' parameter is optional, but highly recommended for - slave and cyclic channels as they typically need to obtain a specific - DMA channel. @@ -97,16 +96,12 @@ index 11fb87f..4b04d89 100644 - Otherwise, the 'filter_fn' routine will be called once for each free - channel which has a capability in 'mask'. 'filter_fn' is expected to - return 'true' when the desired DMA channel is found. -+ struct dma_chan *dma_request_chan(struct device *dev, const char *name); -+ + Which will find and return the 'name' DMA channel associated with the 'dev' + device. The association is done via DT, ACPI or board file based + dma_slave_map matching table. A channel allocated via this interface is exclusive to the caller, until dma_release_channel() is called. -diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c -index 81a36fc..a094dbb 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -43,6 +43,7 @@ @@ -117,7 +112,7 @@ index 81a36fc..a094dbb 100644 #include <linux/dma-mapping.h> #include <linux/init.h> #include <linux/module.h> -@@ -665,27 +666,73 @@ struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask, +@@ -665,27 +666,73 @@ struct dma_chan *__dma_request_channel(c } EXPORT_SYMBOL_GPL(__dma_request_channel); @@ -199,7 +194,7 @@ index 81a36fc..a094dbb 100644 /** * dma_request_slave_channel - try to allocate an exclusive slave channel -@@ -697,17 +744,35 @@ EXPORT_SYMBOL_GPL(dma_request_slave_channel_reason); +@@ -697,17 +744,35 @@ EXPORT_SYMBOL_GPL(dma_request_slave_chan struct dma_chan *dma_request_slave_channel(struct device *dev, const char *name) { @@ -239,8 +234,6 @@ index 81a36fc..a094dbb 100644 void dma_release_channel(struct dma_chan *chan) { mutex_lock(&dma_list_mutex); -diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h -index c47c68e..d50a6b51 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -607,11 +607,38 @@ enum dmaengine_alignment { @@ -290,7 +283,7 @@ index c47c68e..d50a6b51 100644 dma_cap_mask_t cap_mask; unsigned short max_xor; unsigned short max_pq; -@@ -1140,9 +1168,11 @@ enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx); +@@ -1140,9 +1168,11 @@ enum dma_status dma_wait_for_async_tx(st void dma_issue_pending_all(void); struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param); @@ -304,7 +297,7 @@ index c47c68e..d50a6b51 100644 void dma_release_channel(struct dma_chan *chan); int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps); #else -@@ -1166,16 +1196,21 @@ static inline struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask, +@@ -1166,16 +1196,21 @@ static inline struct dma_chan *__dma_req { return NULL; } @@ -331,7 +324,7 @@ index c47c68e..d50a6b51 100644 static inline void dma_release_channel(struct dma_chan *chan) { } -@@ -1186,6 +1221,8 @@ static inline int dma_get_slave_caps(struct dma_chan *chan, +@@ -1186,6 +1221,8 @@ static inline int dma_get_slave_caps(str } #endif @@ -340,6 +333,3 @@ index c47c68e..d50a6b51 100644 static inline int dmaengine_desc_set_reuse(struct dma_async_tx_descriptor *tx) { struct dma_slave_caps caps; --- -2.8.1 - |