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authorsteven miao <realmz6@gmail.com>2010-10-22 12:48:41 +0400
committerMike Frysinger <vapier@gentoo.org>2011-03-18 10:49:23 +0300
commit55835175a03392d2e4d9bff9d482312d118f304e (patch)
tree51157bc604b5c5baa917bd22f420fa6291d5da76 /arch/blackfin/mach-bf548/include
parent6ce0466d631d40662e2ab9ec5a05019482bd1074 (diff)
downloadlinux-55835175a03392d2e4d9bff9d482312d118f304e.tar.xz
Blackfin: bf54x: add kconfig for UART2/3 DMA channel assignments
The BF54x lacks dedicated DMA channels for the UART peripherals and need to be muxed between others. So add a kconfig option so people can select which channels the UARTs will use so they can pick between SPORTs and the less commonly used EPPI/PIXC peripherals. Signed-off-by: steven miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-bf548/include')
-rw-r--r--arch/blackfin/mach-bf548/include/mach/dma.h28
-rw-r--r--arch/blackfin/mach-bf548/include/mach/irq.h4
2 files changed, 24 insertions, 8 deletions
diff --git a/arch/blackfin/mach-bf548/include/mach/dma.h b/arch/blackfin/mach-bf548/include/mach/dma.h
index a30d242c7398..1a1091b071fd 100644
--- a/arch/blackfin/mach-bf548/include/mach/dma.h
+++ b/arch/blackfin/mach-bf548/include/mach/dma.h
@@ -27,17 +27,37 @@
#define CH_PIXC_OVERLAY 16
#define CH_PIXC_OUTPUT 17
#define CH_SPORT2_RX 18
-#define CH_UART2_RX 18
#define CH_SPORT2_TX 19
-#define CH_UART2_TX 19
#define CH_SPORT3_RX 20
-#define CH_UART3_RX 20
#define CH_SPORT3_TX 21
-#define CH_UART3_TX 21
#define CH_SDH 22
#define CH_NFC 22
#define CH_SPI2 23
+#if defined(CONFIG_UART2_DMA_RX_ON_DMA13)
+#define CH_UART2_RX 13
+#define IRQ_UART2_RX BFIN_IRQ(37) /* UART2 RX USE EPP1 (DMA13) Interrupt */
+#define CH_UART2_TX 14
+#define IRQ_UART2_TX BFIN_IRQ(38) /* UART2 RX USE EPP1 (DMA14) Interrupt */
+#else /* Default USE SPORT2's DMA Channel */
+#define CH_UART2_RX 18
+#define IRQ_UART2_RX BFIN_IRQ(33) /* UART2 RX (DMA18) Interrupt */
+#define CH_UART2_TX 19
+#define IRQ_UART2_TX BFIN_IRQ(34) /* UART2 TX (DMA19) Interrupt */
+#endif
+
+#if defined(CONFIG_UART3_DMA_RX_ON_DMA15)
+#define CH_UART3_RX 15
+#define IRQ_UART3_RX BFIN_IRQ(64) /* UART3 RX USE PIXC IN0 (DMA15) Interrupt */
+#define CH_UART3_TX 16
+#define IRQ_UART3_TX BFIN_IRQ(65) /* UART3 TX USE PIXC IN1 (DMA16) Interrupt */
+#else /* Default USE SPORT3's DMA Channel */
+#define CH_UART3_RX 20
+#define IRQ_UART3_RX BFIN_IRQ(35) /* UART3 RX (DMA20) Interrupt */
+#define CH_UART3_TX 21
+#define IRQ_UART3_TX BFIN_IRQ(36) /* UART3 TX (DMA21) Interrupt */
+#endif
+
#define CH_MEM_STREAM0_DEST 24
#define CH_MEM_STREAM0_SRC 25
#define CH_MEM_STREAM1_DEST 26
diff --git a/arch/blackfin/mach-bf548/include/mach/irq.h b/arch/blackfin/mach-bf548/include/mach/irq.h
index 99fd1b2c53d8..7f87787e7738 100644
--- a/arch/blackfin/mach-bf548/include/mach/irq.h
+++ b/arch/blackfin/mach-bf548/include/mach/irq.h
@@ -74,13 +74,9 @@ Events (highest priority) EMU 0
#define IRQ_UART2_ERROR BFIN_IRQ(31) /* UART2 Status (Error) Interrupt */
#define IRQ_CAN0_ERROR BFIN_IRQ(32) /* CAN0 Status (Error) Interrupt */
#define IRQ_SPORT2_RX BFIN_IRQ(33) /* SPORT2 RX (DMA18) Interrupt */
-#define IRQ_UART2_RX BFIN_IRQ(33) /* UART2 RX (DMA18) Interrupt */
#define IRQ_SPORT2_TX BFIN_IRQ(34) /* SPORT2 TX (DMA19) Interrupt */
-#define IRQ_UART2_TX BFIN_IRQ(34) /* UART2 TX (DMA19) Interrupt */
#define IRQ_SPORT3_RX BFIN_IRQ(35) /* SPORT3 RX (DMA20) Interrupt */
-#define IRQ_UART3_RX BFIN_IRQ(35) /* UART3 RX (DMA20) Interrupt */
#define IRQ_SPORT3_TX BFIN_IRQ(36) /* SPORT3 TX (DMA21) Interrupt */
-#define IRQ_UART3_TX BFIN_IRQ(36) /* UART3 TX (DMA21) Interrupt */
#define IRQ_EPPI1 BFIN_IRQ(37) /* EPP1 (DMA13) Interrupt */
#define IRQ_EPPI2 BFIN_IRQ(38) /* EPP2 (DMA14) Interrupt */
#define IRQ_SPI1 BFIN_IRQ(39) /* SPI1 (DMA5) Interrupt */