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-rw-r--r--arch/arm/mach-s3c/dma-s3c24xx.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/dma-s3c24xx.h b/arch/arm/mach-s3c/dma-s3c24xx.h
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+++ b/arch/arm/mach-s3c/dma-s3c24xx.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2003-2006 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Samsung S3C24XX DMA support
+ */
+
+#ifndef __ASM_ARCH_DMA_H
+#define __ASM_ARCH_DMA_H __FILE__
+
+#include <linux/device.h>
+
+/* We use `virtual` dma channels to hide the fact we have only a limited
+ * number of DMA channels, and not of all of them (dependent on the device)
+ * can be attached to any DMA source. We therefore let the DMA core handle
+ * the allocation of hardware channels to clients.
+*/
+
+enum dma_ch {
+ DMACH_XD0 = 0,
+ DMACH_XD1,
+ DMACH_SDI,
+ DMACH_SPI0,
+ DMACH_SPI1,
+ DMACH_UART0,
+ DMACH_UART1,
+ DMACH_UART2,
+ DMACH_TIMER,
+ DMACH_I2S_IN,
+ DMACH_I2S_OUT,
+ DMACH_PCM_IN,
+ DMACH_PCM_OUT,
+ DMACH_MIC_IN,
+ DMACH_USB_EP1,
+ DMACH_USB_EP2,
+ DMACH_USB_EP3,
+ DMACH_USB_EP4,
+ DMACH_UART0_SRC2, /* s3c2412 second uart sources */
+ DMACH_UART1_SRC2,
+ DMACH_UART2_SRC2,
+ DMACH_UART3, /* s3c2443 has extra uart */
+ DMACH_UART3_SRC2,
+ DMACH_SPI0_TX, /* s3c2443/2416/2450 hsspi0 */
+ DMACH_SPI0_RX, /* s3c2443/2416/2450 hsspi0 */
+ DMACH_SPI1_TX, /* s3c2443/2450 hsspi1 */
+ DMACH_SPI1_RX, /* s3c2443/2450 hsspi1 */
+ DMACH_MAX, /* the end entry */
+};
+
+#endif /* __ASM_ARCH_DMA_H */