ide: add struct ide_port_ops (take 2)

* Move hooks for port/host specific methods from ide_hwif_t to
  'struct ide_port_ops'.

* Add 'const struct ide_port_ops *port_ops' to 'struct ide_port_info'
  and ide_hwif_t.

* Update host drivers and core code accordingly.

While at it:

* Rename ata66_*() cable detect functions to *_cable_detect() to match
  the standard naming. (Suggested by Sergei Shtylyov)

v2:
* Fix build for bast-ide. (Noticed by Andrew Morton)

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index a8cd003..51dddc0 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -543,7 +543,16 @@
 	*ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET);
 }
 
+static const struct ide_port_ops au1xxx_port_ops = {
+	.set_pio_mode		= au1xxx_set_pio_mode,
+	.set_dma_mode		= auide_set_dma_mode,
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+	.mdma_filter		= auide_mdma_filter,
+#endif
+};
+
 static const struct ide_port_info au1xxx_port_info = {
+	.port_ops		= &au1xxx_port_ops,
 	.host_flags		= IDE_HFLAG_POST_SET_MODE |
 				  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
 				  IDE_HFLAG_NO_IO_32BIT |
@@ -625,15 +634,8 @@
 	hwif->INSW                      = auide_insw;
 	hwif->OUTSW                     = auide_outsw;
 #endif
-
-	hwif->set_pio_mode		= &au1xxx_set_pio_mode;
-	hwif->set_dma_mode		= &auide_set_dma_mode;
-
 #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
 	hwif->dma_timeout		= &auide_dma_timeout;
-
-	hwif->mdma_filter		= &auide_mdma_filter;
-
 	hwif->dma_host_set		= &auide_dma_host_set;
 	hwif->dma_exec_cmd              = &auide_dma_exec_cmd;
 	hwif->dma_start                 = &auide_dma_start;