sh: Kill off MAX_DMA_ADDRESS leftovers.

We don't support the ISA DMA API, so this is only ever misused. The
dma-sh case inadvertently broke the dreamcast case by testing the wrong
variable for the total number of channels, so this fixes that up too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/drivers/dma/Kconfig

@@ -40,23 +40,6 @@ config NR_ONCHIP_DMA_CHANNELS
 	  DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the
 	  SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6.
 
-config NR_DMA_CHANNELS_BOOL
-	depends on SH_DMA
-	bool "Override default number of maximum DMA channels"
-	help
-	  This allows you to forcibly update the maximum number of supported
-	  DMA channels for a given board. If this is unset, this will default
-	  to the number of channels that the on-chip DMAC has.
-
-config NR_DMA_CHANNELS
-	int "Maximum number of DMA channels"
-	depends on SH_DMA && NR_DMA_CHANNELS_BOOL
-	default NR_ONCHIP_DMA_CHANNELS
-	help
-	  This allows you to specify the maximum number of DMA channels to
-	  support. Setting this to a higher value allows for cascading DMACs
-	  with additional channels.
-
 config SH_DMABRG
 	bool "SH7760 DMABRG support"
 	depends on CPU_SUBTYPE_SH7760

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

@@ -29,7 +29,7 @@ static ssize_t dma_show_devices(struct device *dev,
 	ssize_t len = 0;
 	int i;
 
-	for (i = 0; i < MAX_DMA_CHANNELS; i++) {
+	for (i = 0; i < 16; i++) {
 		struct dma_info *info = get_dma_info(i);
 		struct dma_channel *channel = get_dma_channel(i);
 

arch/sh/include/asm/dma-sh.h

@@ -32,21 +32,21 @@
 #endif
 
 static int dmte_irq_map[] __maybe_unused = {
-#if (MAX_DMA_CHANNELS >= 4)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 4)
     DMTE0_IRQ,
     DMTE0_IRQ + 1,
     DMTE0_IRQ + 2,
     DMTE0_IRQ + 3,
 #endif
-#if (MAX_DMA_CHANNELS >= 6)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 6)
     DMTE4_IRQ,
     DMTE4_IRQ + 1,
 #endif
-#if (MAX_DMA_CHANNELS >= 8)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 8)
     DMTE6_IRQ,
     DMTE6_IRQ + 1,
 #endif
-#if (MAX_DMA_CHANNELS >= 12)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 12)
     DMTE8_IRQ,
     DMTE9_IRQ,
     DMTE10_IRQ,
@@ -62,21 +62,21 @@ static int dmte_irq_map[] __maybe_unused = {
 
 /* DMA base address */
 static u32 dma_base_addr[] __maybe_unused = {
-#if (MAX_DMA_CHANNELS >= 4)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 4)
 	SH_DMAC_BASE0 + 0x00,	/* channel 0 */
 	SH_DMAC_BASE0 + 0x10,
 	SH_DMAC_BASE0 + 0x20,
 	SH_DMAC_BASE0 + 0x30,
 #endif
-#if (MAX_DMA_CHANNELS >= 6)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 6)
 	SH_DMAC_BASE0 + 0x50,
 	SH_DMAC_BASE0 + 0x60,
 #endif
-#if (MAX_DMA_CHANNELS >= 8)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 8)
 	SH_DMAC_BASE1 + 0x00,
 	SH_DMAC_BASE1 + 0x10,
 #endif
-#if (MAX_DMA_CHANNELS >= 12)
+#if (CONFIG_NR_ONCHIP_DMA_CHANNELS >= 12)
 	SH_DMAC_BASE1 + 0x20,
 	SH_DMAC_BASE1 + 0x30,
 	SH_DMAC_BASE1 + 0x50,

arch/sh/include/asm/dma.h

@@ -17,14 +17,6 @@
 #include <linux/device.h>
 #include <asm-generic/dma.h>
 
-#ifdef CONFIG_NR_DMA_CHANNELS
-#  define MAX_DMA_CHANNELS	(CONFIG_NR_DMA_CHANNELS)
-#elif defined(CONFIG_NR_ONCHIP_DMA_CHANNELS)
-#  define MAX_DMA_CHANNELS	(CONFIG_NR_ONCHIP_DMA_CHANNELS)
-#else
-#  define MAX_DMA_CHANNELS	0
-#endif
-
 /*
  * Read and write modes can mean drastically different things depending on the
  * channel configuration. Consult your DMAC documentation and module

arch/sh/include/mach-dreamcast/mach/dma.h

@@ -11,9 +11,7 @@
 #define __ASM_SH_DREAMCAST_DMA_H
 
 /* Number of DMA channels */
-#define ONCHIP_NR_DMA_CHANNELS	4
 #define G2_NR_DMA_CHANNELS	4
-#define PVR2_NR_DMA_CHANNELS	1
 
 /* Channels for cascading */
 #define PVR2_CASCADE_CHAN	2