atiixp: remove ->dma_host_on and ->dma_host_off methods

* Enable/disable UDMA in atiixp_set_dma_mode().

* Remove no longer needed atiixp_dma_host_{on,off}() and save_mdma_mode[].

* Bump driver version.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 5ae2656..4918719 100644 (file)
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -1,5 +1,5 @@
 /*
- *  linux/drivers/ide/pci/atiixp.c     Version 0.03    Aug 3 2007
+ *  linux/drivers/ide/pci/atiixp.c     Version 0.05    Nov 9 2007
  *
  *  Copyright (C) 2003 ATI Inc. <hyu@ati.com>
  *  Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
@@ -43,47 +43,8 @@ static atiixp_ide_timing mdma_timing[] = {
        { 0x02, 0x00 },
 };
 
-static int save_mdma_mode[4];
-
 static DEFINE_SPINLOCK(atiixp_lock);
 
-static void atiixp_dma_host_on(ide_drive_t *drive)
-{
-       struct pci_dev *dev = drive->hwif->pci_dev;
-       unsigned long flags;
-       u16 tmp16;
-
-       spin_lock_irqsave(&atiixp_lock, flags);
-
-       pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
-       if (save_mdma_mode[drive->dn])
-               tmp16 &= ~(1 << drive->dn);
-       else
-               tmp16 |= (1 << drive->dn);
-       pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);
-
-       spin_unlock_irqrestore(&atiixp_lock, flags);
-
-       ide_dma_host_on(drive);
-}
-
-static void atiixp_dma_host_off(ide_drive_t *drive)
-{
-       struct pci_dev *dev = drive->hwif->pci_dev;
-       unsigned long flags;
-       u16 tmp16;
-
-       spin_lock_irqsave(&atiixp_lock, flags);
-
-       pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
-       tmp16 &= ~(1 << drive->dn);
-       pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);
-
-       spin_unlock_irqrestore(&atiixp_lock, flags);
-
-       ide_dma_host_off(drive);
-}
-
 /**
  *     atiixp_set_pio_mode     -       set host controller for PIO mode
  *     @drive: drive
@@ -132,26 +93,33 @@ static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
        int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
        u32 tmp32;
        u16 tmp16;
+       u16 udma_ctl = 0;
 
        spin_lock_irqsave(&atiixp_lock, flags);
 
-       save_mdma_mode[drive->dn] = 0;
+       pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
+
        if (speed >= XFER_UDMA_0) {
                pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
                tmp16 &= ~(0x07 << (drive->dn * 4));
                tmp16 |= ((speed & 0x07) << (drive->dn * 4));
                pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
-       } else {
-               if ((speed >= XFER_MW_DMA_0) && (speed <= XFER_MW_DMA_2)) {
-                       save_mdma_mode[drive->dn] = speed;
-                       pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
-                       tmp32 &= ~(0xff << timing_shift);
-                       tmp32 |= (mdma_timing[speed & 0x03].recover_width << timing_shift) |
-                               (mdma_timing[speed & 0x03].command_width << (timing_shift + 4));
-                       pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
-               }
+
+               udma_ctl |= (1 << drive->dn);
+       } else if (speed >= XFER_MW_DMA_0) {
+               u8 i = speed & 0x03;
+
+               pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
+               tmp32 &= ~(0xff << timing_shift);
+               tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
+                        (mdma_timing[i].command_width << (timing_shift + 4));
+               pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
+
+               udma_ctl &= ~(1 << drive->dn);
        }
 
+       pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
+
        spin_unlock_irqrestore(&atiixp_lock, flags);
 }
 
@@ -181,9 +149,6 @@ static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
                hwif->cbl = ATA_CBL_PATA80;
        else
                hwif->cbl = ATA_CBL_PATA40;
-
-       hwif->dma_host_on = &atiixp_dma_host_on;
-       hwif->dma_host_off = &atiixp_dma_host_off;
 }
 
 static const struct ide_port_info atiixp_pci_info[] __devinitdata = {