drivers/dma/dmabrg.c

20  * from the traditional SH DMAC (although it blocks usage of DMAC 0)
24  *     0      | USB-DMA   | ... | xfer done    | DMABRGI1
45  *		Bits  1-0:  USB error/xfer STATUS.
46  *	Ack an IRQ by writing 0 to the STATUS flag.
47  *	Mask IRQ by writing 0 to ENABLE flag.
56 #define DMARSRA		0xfe090000
57 #define DMAOR		0xffa00040
58 #define DMACHCR0	0xffa0000c
59 #define DMABRGCR	0xfe3c0000
61 #define DMAOR_BRG	0x0000c000
62 #define DMAOR_DMEN	0x00000001
90 	__raw_writel(dcr & ~0x00ff0003, DMABRGCR);	/* ack all */  in dmabrg_irq()
137 	return 0;  in dmabrg_request_irq()
162 	/* request DMAC channel 0 before anyone else can get it */  in dmabrg_init()
163 	ret = request_dma(0, "DMAC 0 (DMABRG)");  in dmabrg_init()
164 	if (ret < 0)  in dmabrg_init()
168 	__raw_writel(0, DMABRGCR);  in dmabrg_init()
169 	__raw_writel(0, DMACHCR0);  in dmabrg_init()
170 	__raw_writel(0x94000000, DMARSRA);	/* enable DMABRG in DMAC 0 */  in dmabrg_init()
176 	ret = request_irq(DMABRGI0, dmabrg_irq, 0,  in dmabrg_init()
181 	ret = request_irq(DMABRGI1, dmabrg_irq, 0,  in dmabrg_init()
186 	ret = request_irq(DMABRGI2, dmabrg_irq, 0,  in dmabrg_init()
188 	if (ret == 0)  in dmabrg_init()