spi: initial BF54x SPI support

Initial BF54x SPI support

 - support BF54x SPI0
 - clean up some code (whitespace etc)
 - will support multiports in the future
 - start using portmux calls

Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/asm-blackfin/mach-bf548/defBF54x_base.h b/include/asm-blackfin/mach-bf548/defBF54x_base.h
index da979cb62f7d..319a48590c9c 100644
--- a/include/asm-blackfin/mach-bf548/defBF54x_base.h
+++ b/include/asm-blackfin/mach-bf548/defBF54x_base.h
@@ -1644,8 +1644,25 @@
 #define                   RESTART  0x20       /* Work Unit Transitions */
 #define                    DI_SEL  0x40       /* Data Interrupt Timing Select */
 #define                     DI_EN  0x80       /* Data Interrupt Enable */
+
 #define                    NDSIZE  0xf00      /* Flex Descriptor Size */
+#define                  NDSIZE_0 0x0000      /* Next Descriptor Size = 0 (Stop/Autobuffer) */
+#define                  NDSIZE_1 0x0100      /* Next Descriptor Size = 1 */
+#define                  NDSIZE_2 0x0200      /* Next Descriptor Size = 2 */
+#define                  NDSIZE_3 0x0300      /* Next Descriptor Size = 3 */
+#define                  NDSIZE_4 0x0400      /* Next Descriptor Size = 4 */
+#define                  NDSIZE_5 0x0500      /* Next Descriptor Size = 5 */
+#define                  NDSIZE_6 0x0600      /* Next Descriptor Size = 6 */
+#define                  NDSIZE_7 0x0700      /* Next Descriptor Size = 7 */
+#define                  NDSIZE_8 0x0800      /* Next Descriptor Size = 8 */
+#define                  NDSIZE_9 0x0900      /* Next Descriptor Size = 9 */
+
 #define                   DMAFLOW  0xf000     /* Next Operation */
+#define              DMAFLOW_STOP  0x0000     /* Stop Mode */
+#define              DMAFLOW_AUTO  0x1000     /* Autobuffer Mode */
+#define             DMAFLOW_ARRAY  0x4000     /* Descriptor Array Mode */
+#define             DMAFLOW_SMALL  0x6000     /* Small Model Descriptor List Mode */
+#define             DMAFLOW_LARGE  0x7000     /* Large Model Descriptor List Mode */
 
 /* Bit masks for DMAx_IRQ_STATUS, MDMA_Sx_IRQ_STATUS, MDMA_Dx_IRQ_STATUS */