1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright 2002 Integrated Device Technology, Inc.
 4 *		All rights reserved.
 5 *
 6 * DMA register definition.
 7 *
 8 * Author : ryan.holmQVist@idt.com
 9 * Date	  : 20011005
10 */
11
12#ifndef _ASM_RC32434_DMA_V_H_
13#define _ASM_RC32434_DMA_V_H_
14
15#include  <asm/mach-rc32434/dma.h>
16#include  <asm/mach-rc32434/rc32434.h>
17
18#define DMA_CHAN_OFFSET		0x14
19#define IS_DMA_USED(X)		(((X) & \
20				(DMA_DESC_FINI | DMA_DESC_DONE | DMA_DESC_TERM)) \
21				!= 0)
22#define DMA_COUNT(count)	((count) & DMA_DESC_COUNT_MSK)
23
24#define DMA_HALT_TIMEOUT	500
25
26static inline int rc32434_halt_dma(struct dma_reg *ch)
27{
28	int timeout = 1;
29	if (__raw_readl(&ch->dmac) & DMA_CHAN_RUN_BIT) {
30		__raw_writel(0, &ch->dmac);
31		for (timeout = DMA_HALT_TIMEOUT; timeout > 0; timeout--) {
32			if (__raw_readl(&ch->dmas) & DMA_STAT_HALT) {
33				__raw_writel(0, &ch->dmas);
34				break;
35			}
36		}
37	}
38
39	return timeout ? 0 : 1;
40}
41
42static inline void rc32434_start_dma(struct dma_reg *ch, u32 dma_addr)
43{
44	__raw_writel(0, &ch->dmandptr);
45	__raw_writel(dma_addr, &ch->dmadptr);
46}
47
48static inline void rc32434_chain_dma(struct dma_reg *ch, u32 dma_addr)
49{
50	__raw_writel(dma_addr, &ch->dmandptr);
51}
52
53#endif	/* _ASM_RC32434_DMA_V_H_ */

 
 1/*
 2 * Copyright 2002 Integrated Device Technology, Inc.
 3 *		All rights reserved.
 4 *
 5 * DMA register definition.
 6 *
 7 * Author : ryan.holmQVist@idt.com
 8 * Date	  : 20011005
 9 */
10
11#ifndef _ASM_RC32434_DMA_V_H_
12#define _ASM_RC32434_DMA_V_H_
13
14#include  <asm/mach-rc32434/dma.h>
15#include  <asm/mach-rc32434/rc32434.h>
16
17#define DMA_CHAN_OFFSET		0x14
18#define IS_DMA_USED(X)		(((X) & \
19				(DMA_DESC_FINI | DMA_DESC_DONE | DMA_DESC_TERM)) \
20				!= 0)
21#define DMA_COUNT(count)	((count) & DMA_DESC_COUNT_MSK)
22
23#define DMA_HALT_TIMEOUT	500
24
25static inline int rc32434_halt_dma(struct dma_reg *ch)
26{
27	int timeout = 1;
28	if (__raw_readl(&ch->dmac) & DMA_CHAN_RUN_BIT) {
29		__raw_writel(0, &ch->dmac);
30		for (timeout = DMA_HALT_TIMEOUT; timeout > 0; timeout--) {
31			if (__raw_readl(&ch->dmas) & DMA_STAT_HALT) {
32				__raw_writel(0, &ch->dmas);
33				break;
34			}
35		}
36	}
37
38	return timeout ? 0 : 1;
39}
40
41static inline void rc32434_start_dma(struct dma_reg *ch, u32 dma_addr)
42{
43	__raw_writel(0, &ch->dmandptr);
44	__raw_writel(dma_addr, &ch->dmadptr);
45}
46
47static inline void rc32434_chain_dma(struct dma_reg *ch, u32 dma_addr)
48{
49	__raw_writel(dma_addr, &ch->dmandptr);
50}
51
52#endif	/* _ASM_RC32434_DMA_V_H_ */