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Diffstat (limited to 'arch/arm/mach-rpc/dma.c')
-rw-r--r--arch/arm/mach-rpc/dma.c68
1 files changed, 45 insertions, 23 deletions
diff --git a/arch/arm/mach-rpc/dma.c b/arch/arm/mach-rpc/dma.c
index a86d3ed859a7..efcf6718d1d0 100644
--- a/arch/arm/mach-rpc/dma.c
+++ b/arch/arm/mach-rpc/dma.c
@@ -302,8 +302,22 @@ static struct dma_ops sound_dma_ops = {
302 .disable = sound_enable_disable_dma, 302 .disable = sound_enable_disable_dma,
303}; 303};
304 304
305void __init arch_dma_init(dma_t *dma) 305static dma_t iomd_dma[6];
306
307static dma_t floppy_dma = {
308 .dma_irq = FIQ_FLOPPYDATA,
309 .d_ops = &floppy_dma_ops,
310};
311
312static dma_t sound_dma = {
313 .d_ops = &sound_dma_ops,
314};
315
316static int __init rpc_dma_init(void)
306{ 317{
318 unsigned int i;
319 int ret;
320
307 iomd_writeb(0, IOMD_IO0CR); 321 iomd_writeb(0, IOMD_IO0CR);
308 iomd_writeb(0, IOMD_IO1CR); 322 iomd_writeb(0, IOMD_IO1CR);
309 iomd_writeb(0, IOMD_IO2CR); 323 iomd_writeb(0, IOMD_IO2CR);
@@ -311,31 +325,39 @@ void __init arch_dma_init(dma_t *dma)
311 325
312 iomd_writeb(0xa0, IOMD_DMATCR); 326 iomd_writeb(0xa0, IOMD_DMATCR);
313 327
314 dma[DMA_0].dma_base = IOMD_IO0CURA;
315 dma[DMA_0].dma_irq = IRQ_DMA0;
316 dma[DMA_0].d_ops = &iomd_dma_ops;
317 dma[DMA_1].dma_base = IOMD_IO1CURA;
318 dma[DMA_1].dma_irq = IRQ_DMA1;
319 dma[DMA_1].d_ops = &iomd_dma_ops;
320 dma[DMA_2].dma_base = IOMD_IO2CURA;
321 dma[DMA_2].dma_irq = IRQ_DMA2;
322 dma[DMA_2].d_ops = &iomd_dma_ops;
323 dma[DMA_3].dma_base = IOMD_IO3CURA;
324 dma[DMA_3].dma_irq = IRQ_DMA3;
325 dma[DMA_3].d_ops = &iomd_dma_ops;
326 dma[DMA_S0].dma_base = IOMD_SD0CURA;
327 dma[DMA_S0].dma_irq = IRQ_DMAS0;
328 dma[DMA_S0].d_ops = &iomd_dma_ops;
329 dma[DMA_S1].dma_base = IOMD_SD1CURA;
330 dma[DMA_S1].dma_irq = IRQ_DMAS1;
331 dma[DMA_S1].d_ops = &iomd_dma_ops;
332 dma[DMA_VIRTUAL_FLOPPY].dma_irq = FIQ_FLOPPYDATA;
333 dma[DMA_VIRTUAL_FLOPPY].d_ops = &floppy_dma_ops;
334 dma[DMA_VIRTUAL_SOUND].d_ops = &sound_dma_ops;
335
336 /* 328 /*
337 * Setup DMA channels 2,3 to be for podules 329 * Setup DMA channels 2,3 to be for podules
338 * and channels 0,1 for internal devices 330 * and channels 0,1 for internal devices
339 */ 331 */
340 iomd_writeb(DMA_EXT_IO3|DMA_EXT_IO2, IOMD_DMAEXT); 332 iomd_writeb(DMA_EXT_IO3|DMA_EXT_IO2, IOMD_DMAEXT);
333
334 iomd_dma[DMA_0].dma_base = IOMD_IO0CURA;
335 iomd_dma[DMA_0].dma_irq = IRQ_DMA0;
336 iomd_dma[DMA_1].dma_base = IOMD_IO1CURA;
337 iomd_dma[DMA_1].dma_irq = IRQ_DMA1;
338 iomd_dma[DMA_2].dma_base = IOMD_IO2CURA;
339 iomd_dma[DMA_2].dma_irq = IRQ_DMA2;
340 iomd_dma[DMA_3].dma_base = IOMD_IO3CURA;
341 iomd_dma[DMA_3].dma_irq = IRQ_DMA3;
342 iomd_dma[DMA_S0].dma_base = IOMD_SD0CURA;
343 iomd_dma[DMA_S0].dma_irq = IRQ_DMAS0;
344 iomd_dma[DMA_S1].dma_base = IOMD_SD1CURA;
345 iomd_dma[DMA_S1].dma_irq = IRQ_DMAS1;
346
347 for (i = DMA_0; i <= DMA_S1; i++) {
348 iomd_dma[i].d_ops = &iomd_dma_ops;
349
350 ret = isa_dma_add(i, &iomd_dma[i]);
351 if (ret)
352 printk("IOMDDMA%u: unable to register: %d\n", i, ret);
353 }
354
355 ret = isa_dma_add(DMA_VIRTUAL_FLOPPY, &floppy_dma);
356 if (ret)
357 printk("IOMDFLOPPY: unable to register: %d\n", ret);
358 ret = isa_dma_add(DMA_VIRTUAL_SOUND, &sound_dma);
359 if (ret)
360 printk("IOMDSOUND: unable to register: %d\n", ret);
361 return 0;
341} 362}
363core_initcall(rpc_dma_init);