Blackfin arch: initial supporting for BF548-EZKIT

The ADSP-BF54x was specifically designed to meet the needs of convergent multimedia
applications where system performance and cost are essential ingredients. The
integration of multimedia, human interface, and connectivity peripherals combined
with increased system bandwidth and on-chip memory provides customers a platform to
design the most demanding applications.

Since now, ADSP-BF54x will be supported in the Linux kernel and bunch of related drivers
such as USB OTG, ATAPI, NAND flash controller, LCD framebuffer, sound, touch screen will
be submitted later.

Please enjoy the show.

Signed-off-by: Roy Huang <roy.huang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

2 files changed, 116 insertions, 1 deletions

diff --git a/arch/blackfin/mach-bf537/Makefile b/arch/blackfin/mach-bf537/Makefile
index f32d44215bb7..7e7c9c8ac5b2 100644
--- a/arch/blackfin/mach-bf537/Makefile
+++ b/arch/blackfin/mach-bf537/Makefile
@@ -4,6 +4,6 @@
 
 extra-y := head.o
 
-obj-y := ints-priority.o
+obj-y := ints-priority.o dma.o
 
 obj-$(CONFIG_CPU_FREQ)   += cpu.o
diff --git a/arch/blackfin/mach-bf537/dma.c b/arch/blackfin/mach-bf537/dma.c
new file mode 100644
index 000000000000..706cb97b0265
--- /dev/null
+++ b/arch/blackfin/mach-bf537/dma.c
@@ -0,0 +1,115 @@
+/*
+ * File:         arch/blackfin/mach-bf537/dma.c
+ * Based on:
+ * Author:
+ *
+ * Created:
+ * Description:  This file contains the simple DMA Implementation for Blackfin
+ *
+ * Modified:
+ *               Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <asm/blackfin.h>
+#include <asm/dma.h>
+
+struct dma_register *base_addr[MAX_BLACKFIN_DMA_CHANNEL] = {
+	(struct dma_register *) DMA0_NEXT_DESC_PTR,
+	(struct dma_register *) DMA1_NEXT_DESC_PTR,
+	(struct dma_register *) DMA2_NEXT_DESC_PTR,
+	(struct dma_register *) DMA3_NEXT_DESC_PTR,
+	(struct dma_register *) DMA4_NEXT_DESC_PTR,
+	(struct dma_register *) DMA5_NEXT_DESC_PTR,
+	(struct dma_register *) DMA6_NEXT_DESC_PTR,
+	(struct dma_register *) DMA7_NEXT_DESC_PTR,
+	(struct dma_register *) DMA8_NEXT_DESC_PTR,
+	(struct dma_register *) DMA9_NEXT_DESC_PTR,
+	(struct dma_register *) DMA10_NEXT_DESC_PTR,
+	(struct dma_register *) DMA11_NEXT_DESC_PTR,
+	(struct dma_register *) MDMA_D0_NEXT_DESC_PTR,
+	(struct dma_register *) MDMA_S0_NEXT_DESC_PTR,
+	(struct dma_register *) MDMA_D1_NEXT_DESC_PTR,
+	(struct dma_register *) MDMA_S1_NEXT_DESC_PTR,
+};
+
+int channel2irq(unsigned int channel)
+{
+	int ret_irq = -1;
+
+	switch (channel) {
+	case CH_PPI:
+		ret_irq = IRQ_PPI;
+		break;
+
+	case CH_EMAC_RX:
+		ret_irq = IRQ_MAC_RX;
+		break;
+
+	case CH_EMAC_TX:
+		ret_irq = IRQ_MAC_TX;
+		break;
+
+	case CH_UART1_RX:
+		ret_irq = IRQ_UART1_RX;
+		break;
+
+	case CH_UART1_TX:
+		ret_irq = IRQ_UART1_TX;
+		break;
+
+	case CH_SPORT0_RX:
+		ret_irq = IRQ_SPORT0_RX;
+		break;
+
+	case CH_SPORT0_TX:
+		ret_irq = IRQ_SPORT0_TX;
+		break;
+
+	case CH_SPORT1_RX:
+		ret_irq = IRQ_SPORT1_RX;
+		break;
+
+	case CH_SPORT1_TX:
+		ret_irq = IRQ_SPORT1_TX;
+		break;
+
+	case CH_SPI:
+		ret_irq = IRQ_SPI;
+		break;
+
+	case CH_UART_RX:
+		ret_irq = IRQ_UART_RX;
+		break;
+
+	case CH_UART_TX:
+		ret_irq = IRQ_UART_TX;
+		break;
+
+	case CH_MEM_STREAM0_SRC:
+	case CH_MEM_STREAM0_DEST:
+		ret_irq = IRQ_MEM_DMA0;
+		break;
+
+	case CH_MEM_STREAM1_SRC:
+	case CH_MEM_STREAM1_DEST:
+		ret_irq = IRQ_MEM_DMA1;
+		break;
+	}
+	return ret_irq;
+}