MIPS, IDE: Alchem, au1xxx-ide: Remove pb1200/db1200 header dep

au1xxx-ide uses defines from the pb1200/db1200 headers:
get DBDMA ID through platform resource information,
hardcode register spacing.  The only 2 users of this driver (and
the only boards it can really work on realiably) use the same
register layout.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: linux-ide@vger.kernel.org
To: Linux-MIPS <linux-mips@linux-mips.org>
Cc: linux-ide@vger.kernel.org
Acked-by: David S. Miller <davem@davemloft.net>
Patchwork: https://patchwork.linux-mips.org/patch/2716/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/alchemy/devboards/db1200/platform.c

@@ -213,7 +213,12 @@ static struct resource db1200_ide_res[] = {
 		.start	= DB1200_IDE_INT,
 		.end	= DB1200_IDE_INT,
 		.flags	= IORESOURCE_IRQ,
-	}
+	},
+	[2] = {
+		.start	= DSCR_CMD0_DMA_REQ1,
+		.end	= DSCR_CMD0_DMA_REQ1,
+		.flags	= IORESOURCE_DMA,
+	},
 };
 
 static u64 ide_dmamask = DMA_BIT_MASK(32);

arch/mips/alchemy/devboards/pb1200/platform.c

@@ -26,6 +26,7 @@
 
 #include <asm/mach-au1x00/au1xxx.h>
 #include <asm/mach-au1x00/au1100_mmc.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
 #include <asm/mach-db1x00/bcsr.h>
 
 #include "../platform.h"
@@ -115,7 +116,12 @@ static struct resource ide_resources[] = {
 		.start	= IDE_INT,
 		.end	= IDE_INT,
 		.flags	= IORESOURCE_IRQ
-	}
+	},
+	[2] = {
+		.start	= DSCR_CMD0_DMA_REQ1,
+		.end	= DSCR_CMD0_DMA_REQ1,
+		.flags	= IORESOURCE_DMA,
+	},
 };
 
 static u64 ide_dmamask = DMA_BIT_MASK(32);

arch/mips/include/asm/mach-au1x00/au1xxx_ide.h

@@ -58,6 +58,7 @@ typedef struct {
 #endif
 	int			irq;
 	u32			regbase;
+	int			ddma_id;
 } _auide_hwif;
 
 /******************************************************************************/

arch/mips/include/asm/mach-db1x00/db1200.h

@@ -46,8 +46,6 @@
 
 #define IDE_PHYS_ADDR		0x18800000
 #define IDE_REG_SHIFT		5
-#define IDE_DDMA_REQ		DSCR_CMD0_DMA_REQ1
-#define IDE_RQSIZE		128
 
 #define DB1200_IDE_PHYS_ADDR	IDE_PHYS_ADDR
 #define DB1200_IDE_PHYS_LEN	(16 << IDE_REG_SHIFT)

arch/mips/include/asm/mach-pb1x00/pb1200.h

@@ -76,8 +76,6 @@
 #define IDE_REG_SHIFT		5
 #define IDE_PHYS_LEN		(16 << IDE_REG_SHIFT)
 #define IDE_INT 		PB1200_IDE_INT
-#define IDE_DDMA_REQ		DSCR_CMD0_DMA_REQ1
-#define IDE_RQSIZE		128
 
 #define NAND_PHYS_ADDR 	0x1C000000
 

drivers/ide/au1xxx-ide.c

@@ -43,6 +43,10 @@
 #define DRV_NAME	"au1200-ide"
 #define DRV_AUTHOR	"Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>"
 
+#ifndef IDE_REG_SHIFT
+#define IDE_REG_SHIFT 5
+#endif
+
 /* enable the burstmode in the dbdma */
 #define IDE_AU1XXX_BURSTMODE	1
 
@@ -317,10 +321,11 @@ static void auide_ddma_rx_callback(int irq, void *param)
 }
 #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
 
-static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags)
+static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize,
+				 u32 devwidth, u32 flags, u32 regbase)
 {
 	dev->dev_id          = dev_id;
-	dev->dev_physaddr    = (u32)IDE_PHYS_ADDR;
+	dev->dev_physaddr    = CPHYSADDR(regbase);
 	dev->dev_intlevel    = 0;
 	dev->dev_intpolarity = 0;
 	dev->dev_tsize       = tsize;
@@ -344,7 +349,7 @@ static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
 	dbdev_tab_t source_dev_tab, target_dev_tab;
 	u32 dev_id, tsize, devwidth, flags;
 
-	dev_id	 = IDE_DDMA_REQ;
+	dev_id	 = hwif->ddma_id;
 
 	tsize    =  8; /*  1 */
 	devwidth = 32; /* 16 */
@@ -356,20 +361,17 @@ static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
 #endif
 
 	/* setup dev_tab for tx channel */
-	auide_init_dbdma_dev( &source_dev_tab,
-			      dev_id,
-			      tsize, devwidth, DEV_FLAGS_OUT | flags);
+	auide_init_dbdma_dev(&source_dev_tab, dev_id, tsize, devwidth,
+			     DEV_FLAGS_OUT | flags, auide->regbase);
  	auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
 
-	auide_init_dbdma_dev( &source_dev_tab,
-			      dev_id,
-			      tsize, devwidth, DEV_FLAGS_IN | flags);
+	auide_init_dbdma_dev(&source_dev_tab, dev_id, tsize, devwidth,
+			     DEV_FLAGS_IN | flags, auide->regbase);
  	auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
 
 	/* We also need to add a target device for the DMA */
-	auide_init_dbdma_dev( &target_dev_tab,
-			      (u32)DSCR_CMD0_ALWAYS,
-			      tsize, devwidth, DEV_FLAGS_ANYUSE);
+	auide_init_dbdma_dev(&target_dev_tab, (u32)DSCR_CMD0_ALWAYS, tsize,
+			     devwidth, DEV_FLAGS_ANYUSE, auide->regbase);
 	auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab);	
 
 	/* Get a channel for TX */
@@ -411,14 +413,12 @@ static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
 #endif
 
 	/* setup dev_tab for tx channel */
-	auide_init_dbdma_dev( &source_dev_tab,
-			      (u32)DSCR_CMD0_ALWAYS,
-			      8, 32, DEV_FLAGS_OUT | flags);
+	auide_init_dbdma_dev(&source_dev_tab, (u32)DSCR_CMD0_ALWAYS, 8, 32,
+			     DEV_FLAGS_OUT | flags, auide->regbase);
  	auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
 
-	auide_init_dbdma_dev( &source_dev_tab,
-			      (u32)DSCR_CMD0_ALWAYS,
-			      8, 32, DEV_FLAGS_IN | flags);
+	auide_init_dbdma_dev(&source_dev_tab, (u32)DSCR_CMD0_ALWAYS, 8, 32,
+			     DEV_FLAGS_IN | flags, auide->regbase);
  	auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
 
 	/* Get a channel for TX */
@@ -540,6 +540,14 @@ static int au_ide_probe(struct platform_device *dev)
 		goto out;
 	}
 
+	res = platform_get_resource(dev, IORESOURCE_DMA, 0);
+	if (!res) {
+		pr_debug("%s: no DDMA ID resource\n", DRV_NAME);
+		ret = -ENODEV;
+		goto out;
+	}
+	ahwif->ddma_id = res->start;
+
 	memset(&hw, 0, sizeof(hw));
 	auide_setup_ports(&hw, ahwif);
 	hw.irq = ahwif->irq;