[Blackfin] arch: Enable UART2 and UART3 for bf548

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

3 files changed, 22 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index fa9debe8d5f4..5453bc3664fc 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -104,6 +104,16 @@ int request_dma(unsigned int channel, char *device_id)
 
         mutex_unlock(&(dma_ch[channel].dmalock));
 
+#ifdef CONFIG_BF54x
+        if (channel >= CH_UART2_RX && channel <= CH_UART3_TX &&
+                strncmp(device_id, "BFIN_UART", 9) == 0)
+                dma_ch[channel].regs->peripheral_map |=
+                        (channel - CH_UART2_RX + 0xC);
+        else
+                dma_ch[channel].regs->peripheral_map |=
+                        (channel - CH_UART2_RX + 0x6);
+#endif
+
         dma_ch[channel].device_id = device_id;
         dma_ch[channel].irq_callback = NULL;
 
diff --git a/include/asm-blackfin/mach-bf548/dma.h b/include/asm-blackfin/mach-bf548/dma.h
index 4d97d3aa97cd..46ff31f20ae5 100644
--- a/include/asm-blackfin/mach-bf548/dma.h
+++ b/include/asm-blackfin/mach-bf548/dma.h
@@ -51,9 +51,13 @@
 #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
diff --git a/include/asm-blackfin/mach-bf548/irq.h b/include/asm-blackfin/mach-bf548/irq.h
index c34507a3f1df..ad380d1f5872 100644
--- a/include/asm-blackfin/mach-bf548/irq.h
+++ b/include/asm-blackfin/mach-bf548/irq.h
@@ -99,9 +99,13 @@ 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 */
@@ -421,9 +425,13 @@ Events         (highest priority)  EMU         0
 /* IAR4 BIT FILEDS */
 #define IRQ_CAN0_ERR_POS        0
 #define IRQ_SPORT2_RX_POS       4
+#define IRQ_UART2_RX_POS        4
 #define IRQ_SPORT2_TX_POS       8
+#define IRQ_UART2_TX_POS        8
 #define IRQ_SPORT3_RX_POS       12
+#define IRQ_UART3_RX_POS        12
 #define IRQ_SPORT3_TX_POS       16
+#define IRQ_UART3_TX_POS        16
 #define IRQ_EPPI1_POS           20
 #define IRQ_EPPI2_POS           24
 #define IRQ_SPI1_POS            28