1 files changed, 36 insertions, 28 deletions

diff --git a/drivers/ide/arm/palm_bk3710.c b/drivers/ide/arm/palm_bk3710.c
index 420fcb78a7c..aaf32541622 100644
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/arm/palm_bk3710.c
@@ -96,11 +96,11 @@ static void palm_bk3710_setudmamode(void __iomem *base, unsigned int dev,
 	u16 val16;
 
 	/* DMA Data Setup */
-	t0 = (palm_bk3710_udmatimings[mode].cycletime + ide_palm_clk - 1)
-			/ ide_palm_clk - 1;
-	tenv = (20 + ide_palm_clk - 1) / ide_palm_clk - 1;
-	trp = (palm_bk3710_udmatimings[mode].rptime + ide_palm_clk - 1)
-			/ ide_palm_clk - 1;
+	t0 = DIV_ROUND_UP(palm_bk3710_udmatimings[mode].cycletime,
+			  ide_palm_clk) - 1;
+	tenv = DIV_ROUND_UP(20, ide_palm_clk) - 1;
+	trp = DIV_ROUND_UP(palm_bk3710_udmatimings[mode].rptime,
+			   ide_palm_clk) - 1;
 
 	/* udmatim Register */
 	val16 = readw(base + BK3710_UDMATIM) & (dev ? 0xFF0F : 0xFFF0);
@@ -141,8 +141,8 @@ static void palm_bk3710_setdmamode(void __iomem *base, unsigned int dev,
 	cycletime = max_t(int, t->cycle, min_cycle);
 
 	/* DMA Data Setup */
-	t0 = (cycletime + ide_palm_clk - 1) / ide_palm_clk;
-	td = (t->active + ide_palm_clk - 1) / ide_palm_clk;
+	t0 = DIV_ROUND_UP(cycletime, ide_palm_clk);
+	td = DIV_ROUND_UP(t->active, ide_palm_clk);
 	tkw = t0 - td - 1;
 	td -= 1;
 
@@ -168,9 +168,9 @@ static void palm_bk3710_setpiomode(void __iomem *base, ide_drive_t *mate,
 	struct ide_timing *t;
 
 	/* PIO Data Setup */
-	t0 = (cycletime + ide_palm_clk - 1) / ide_palm_clk;
-	t2 = (ide_timing_find_mode(XFER_PIO_0 + mode)->active +
-	      ide_palm_clk - 1)	/ ide_palm_clk;
+	t0 = DIV_ROUND_UP(cycletime, ide_palm_clk);
+	t2 = DIV_ROUND_UP(ide_timing_find_mode(XFER_PIO_0 + mode)->active,
+			  ide_palm_clk);
 
 	t2i = t0 - t2 - 1;
 	t2 -= 1;
@@ -192,8 +192,8 @@ static void palm_bk3710_setpiomode(void __iomem *base, ide_drive_t *mate,
 
 	/* TASKFILE Setup */
 	t = ide_timing_find_mode(XFER_PIO_0 + mode);
-	t0 = (t->cyc8b + ide_palm_clk - 1) / ide_palm_clk;
-	t2 = (t->act8b + ide_palm_clk - 1) / ide_palm_clk;
+	t0 = DIV_ROUND_UP(t->cyc8b, ide_palm_clk);
+	t2 = DIV_ROUND_UP(t->act8b, ide_palm_clk);
 
 	t2i = t0 - t2 - 1;
 	t2 -= 1;
@@ -317,17 +317,31 @@ static u8 __devinit palm_bk3710_cable_detect(ide_hwif_t *hwif)
 	return ATA_CBL_PATA80;
 }
 
-static void __devinit palm_bk3710_init_hwif(ide_hwif_t *hwif)
+static int __devinit palm_bk3710_init_dma(ide_hwif_t *hwif,
+					  const struct ide_port_info *d)
 {
-	hwif->set_pio_mode = palm_bk3710_set_pio_mode;
-	hwif->set_dma_mode = palm_bk3710_set_dma_mode;
+	unsigned long base =
+		hwif->io_ports.data_addr - IDE_PALM_ATA_PRI_REG_OFFSET;
 
-	hwif->cable_detect = palm_bk3710_cable_detect;
+	printk(KERN_INFO "    %s: MMIO-DMA\n", hwif->name);
+
+	if (ide_allocate_dma_engine(hwif))
+		return -1;
+
+	ide_setup_dma(hwif, base);
+
+	return 0;
 }
 
+static const struct ide_port_ops palm_bk3710_ports_ops = {
+	.set_pio_mode		= palm_bk3710_set_pio_mode,
+	.set_dma_mode		= palm_bk3710_set_dma_mode,
+	.cable_detect		= palm_bk3710_cable_detect,
+};
+
 static const struct ide_port_info __devinitdata palm_bk3710_port_info = {
-	.init_hwif		= palm_bk3710_init_hwif,
-	.host_flags		= IDE_HFLAG_NO_DMA, /* hack (no PCI) */
+	.init_dma		= palm_bk3710_init_dma,
+	.port_ops		= &palm_bk3710_ports_ops,
 	.pio_mask		= ATA_PIO4,
 	.udma_mask		= ATA_UDMA4,	/* (input clk 99MHz) */
 	.mwdma_mask		= ATA_MWDMA2,
@@ -372,30 +386,24 @@ static int __devinit palm_bk3710_probe(struct platform_device *pdev)
 
 	pribase = mem->start + IDE_PALM_ATA_PRI_REG_OFFSET;
 	for (i = 0; i < IDE_NR_PORTS - 2; i++)
-		hw.io_ports[i] = pribase + i;
-	hw.io_ports[IDE_CONTROL_OFFSET] = mem->start +
+		hw.io_ports_array[i] = pribase + i;
+	hw.io_ports.ctl_addr = mem->start +
 			IDE_PALM_ATA_PRI_CTL_OFFSET;
 	hw.irq = irq->start;
 	hw.chipset = ide_palm3710;
 
-	hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+	hwif = ide_find_port();
 	if (hwif == NULL)
 		goto out;
 
 	i = hwif->index;
 
-	if (hwif->present)
-		ide_unregister(i);
-	else
-		ide_init_port_data(hwif, i);
-
+	ide_init_port_data(hwif, i);
 	ide_init_port_hw(hwif, &hw);
 
 	hwif->mmio = 1;
 	default_hwif_mmiops(hwif);
 
-	ide_setup_dma(hwif, mem->start);
-
 	idx[0] = i;
 
 	ide_device_add(idx, &palm_bk3710_port_info);