sh: SH-DMAC compile fixes

This patch does the following:
- remove the make_ipr_irq stuff from dma-sh.c and replace it
  with a simple channel<->irq mapping table.
- add DMTEx_IRQ constants for sh4 cpus
- fix sh7751 DMAE irq number

The SH7780 uses the same IRQs for DMA as other SH4 types, so
I put the constants on top of the dma.h file.

Other CPU types need to #define their own DMTEx_IRQ contants
in their appropriate header.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/drivers/dma/dma-sh.c

@@ -19,34 +19,26 @@
 #include <asm/io.h>
 #include "dma-sh.h"
 
-
-
-#ifdef CONFIG_CPU_SH4
-static struct ipr_data dmae_ipr_map[] = {
-	{ DMAE_IRQ, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-};
+static int dmte_irq_map[] = {
+	DMTE0_IRQ,
+	DMTE1_IRQ,
+	DMTE2_IRQ,
+	DMTE3_IRQ,
+#if defined(CONFIG_CPU_SUBTYPE_SH7751R) ||	\
+    defined(CONFIG_CPU_SUBTYPE_SH7760)  ||	\
+    defined(CONFIG_CPU_SUBTYPE_SH7780)
+	DMTE4_IRQ,
+	DMTE5_IRQ,
+	DMTE6_IRQ,
+	DMTE7_IRQ,    
 #endif
-static struct ipr_data dmte_ipr_map[] = {
-	/*
-	 * Normally we could just do DMTE0_IRQ + chan outright, though in the
-	 * case of the 7751R, the DMTE IRQs for channels > 4 start right above
-	 * the SCIF
-	 */
-	{ DMTE0_IRQ + 0, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-	{ DMTE0_IRQ + 1, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-	{ DMTE0_IRQ + 2, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-	{ DMTE0_IRQ + 3, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-	{ DMTE4_IRQ + 0, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-	{ DMTE4_IRQ + 1, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-	{ DMTE4_IRQ + 2, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
-	{ DMTE4_IRQ + 3, DMA_IPR_ADDR, DMA_IPR_POS, DMA_PRIORITY },
 };
 
 static inline unsigned int get_dmte_irq(unsigned int chan)
 {
 	unsigned int irq = 0;
-	if (chan < ARRAY_SIZE(dmte_ipr_map))
-		irq = dmte_ipr_map[chan].irq;
+	if (chan < ARRAY_SIZE(dmte_irq_map))
+		irq = dmte_irq_map[chan];
 	return irq;
 }
 
@@ -103,7 +95,7 @@ static void sh_dmac_free_dma(struct dma_channel *chan)
 	free_irq(get_dmte_irq(chan->chan), chan);
 }
 
-static void
+static int
 sh_dmac_configure_channel(struct dma_channel *chan, unsigned long chcr)
 {
 	if (!chcr)
@@ -119,6 +111,7 @@ sh_dmac_configure_channel(struct dma_channel *chan, unsigned long chcr)
 	ctrl_outl(chcr, CHCR[chan->chan]);
 
 	chan->flags |= DMA_CONFIGURED;
+	return 0;
 }
 
 static void sh_dmac_enable_dma(struct dma_channel *chan)
@@ -262,17 +255,11 @@ static int __init sh_dmac_init(void)
 	int i;
 
 #ifdef CONFIG_CPU_SH4
-	make_ipr_irq(dmae_ipr_map, ARRAY_SIZE(dmae_ipr_map));
 	i = request_irq(DMAE_IRQ, dma_err, IRQF_DISABLED, "DMAC Address Error", 0);
 	if (unlikely(i < 0))
 		return i;
 #endif
 
-	i = info->nr_channels;
-	if (i > ARRAY_SIZE(dmte_ipr_map))
-		i = ARRAY_SIZE(dmte_ipr_map);
-	make_ipr_irq(dmte_ipr_map, i);
-
 	/*
 	 * Initialize DMAOR, and clean up any error flags that may have
 	 * been set.

arch/sh/kernel/cpu/sh4/setup-sh7750.c

@@ -101,7 +101,7 @@ static struct ipr_data sh7750_ipr_map[] = {
 	{ 35, 2,  8, 7 }, /* DMAC DMTE1 */
 	{ 36, 2,  8, 7 }, /* DMAC DMTE2 */
 	{ 37, 2,  8, 7 }, /* DMAC DMTE3 */
-	{ 28, 2,  8, 7 }, /* DMAC DMAE */
+	{ 38, 2,  8, 7 }, /* DMAC DMAE */
 };
 
 static struct ipr_data sh7751_ipr_map[] = {

include/asm-sh/cpu-sh4/dma.h

@@ -3,6 +3,17 @@
 
 #define DMAOR_INIT	( 0x8000 | DMAOR_DME )
 
+/* SH7751/7760/7780 DMA IRQ sources */
+#define DMTE0_IRQ	34
+#define DMTE1_IRQ	35
+#define DMTE2_IRQ	36
+#define DMTE3_IRQ	37
+#define DMTE4_IRQ	44
+#define DMTE5_IRQ	45
+#define DMTE6_IRQ	46
+#define DMTE7_IRQ	47
+#define DMAE_IRQ	38
+
 #ifdef CONFIG_CPU_SH4A
 #define SH_DMAC_BASE	0xfc808020