summaryrefslogtreecommitdiffstats
path: root/drivers/dma/dw_dmac_regs.h
diff options
context:
space:
mode:
authorArnd Bergmann <arnd@arndb.de>2013-02-27 21:36:03 +0000
committerVinod Koul <vinod.koul@intel.com>2013-02-28 09:53:21 +0530
commitf9c6a655a94042f94c0adb30d07d93cfd8915e95 (patch)
tree527fa9aa65510c3ad96e4bb93fbdb6abd46b9f37 /drivers/dma/dw_dmac_regs.h
parent864ef69b2d9b34e7c85baa9c5c601d5e735b208a (diff)
dmaengine: dw_dmac: move to generic DMA binding
The original device tree binding for this driver, from Viresh Kumar unfortunately conflicted with the generic DMA binding, and did not allow to completely seperate slave device configuration from the controller. This is an attempt to replace it with an implementation of the generic binding, but it is currently completely untested, because I do not have any hardware with this particular controller. The patch applies on top of the slave-dma tree, which contains both the base support for the generic DMA binding, as well as the earlier attempt from Viresh. Both of these are currently not merged upstream however. This version incorporates feedback from Viresh Kumar, Andy Shevchenko and Russell King. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Vinod Koul <vinod.koul@linux.intel.com> Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/dw_dmac_regs.h')
-rw-r--r--drivers/dma/dw_dmac_regs.h7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h
index 88dd8eb3195..cf0ce5c77d6 100644
--- a/drivers/dma/dw_dmac_regs.h
+++ b/drivers/dma/dw_dmac_regs.h
@@ -13,6 +13,7 @@
#include <linux/dw_dmac.h>
#define DW_DMA_MAX_NR_CHANNELS 8
+#define DW_DMA_MAX_NR_REQUESTS 16
/* flow controller */
enum dw_dma_fc {
@@ -211,6 +212,8 @@ struct dw_dma_chan {
/* hardware configuration */
unsigned int block_size;
bool nollp;
+ unsigned int request_line;
+ struct dw_dma_slave slave;
/* configuration passed via DMA_SLAVE_CONFIG */
struct dma_slave_config dma_sconfig;
@@ -239,10 +242,6 @@ struct dw_dma {
struct tasklet_struct tasklet;
struct clk *clk;
- /* slave information */
- struct dw_dma_slave *sd;
- unsigned int sd_count;
-
u8 all_chan_mask;
/* hardware configuration */