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palm_bk3710: add UltraDMA/100 support

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This controller supports UltraDMA up to mode 5 but it should be clocked with
at least twice the data strobe frequency, so enable mode 5 for 100+ MHz IDECLK.

While at it, start passing the correct device to clk_get() -- it worked anyway
but WTF? :-/

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Sergei Shtylyov 2008-07-24 22:53:34 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 7fa897b91a
commit a0f403bc58
1 changed files with 6 additions and 3 deletions
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9
drivers/ide/arm/palm_bk3710.c
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@ -82,6 +82,7 @@ static const struct palm_bk3710_udmatiming palm_bk3710_udmatimings[6] = {
{100, 120}, /* UDMA Mode 2 */
{100, 90}, /* UDMA Mode 3 */
{100, 60}, /* UDMA Mode 4 */
{85, 40}, /* UDMA Mode 5 */
};
static void palm_bk3710_setudmamode(void __iomem *base, unsigned int dev,
@ -334,12 +335,11 @@ static const struct ide_port_ops palm_bk3710_ports_ops = {
.cable_detect = palm_bk3710_cable_detect,
};
static const struct ide_port_info __devinitdata palm_bk3710_port_info = {
static struct ide_port_info __devinitdata palm_bk3710_port_info = {
.init_dma = palm_bk3710_init_dma,
.port_ops = &palm_bk3710_ports_ops,
.host_flags = IDE_HFLAG_MMIO,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA4, /* (input clk 99MHz) */
.mwdma_mask = ATA_MWDMA2,
};
@ -352,7 +352,7 @@ static int __devinit palm_bk3710_probe(struct platform_device *pdev)
int i, rc;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
clk = clk_get(NULL, "IDECLK");
clk = clk_get(&pdev->dev, "IDECLK");
if (IS_ERR(clk))
return -ENODEV;
@ -392,6 +392,9 @@ static int __devinit palm_bk3710_probe(struct platform_device *pdev)
hw.irq = irq->start;
hw.chipset = ide_palm3710;
palm_bk3710_port_info.udma_mask = rate < 100000000 ? ATA_UDMA4 :
ATA_UDMA5;
rc = ide_host_add(&palm_bk3710_port_info, hws, NULL);
if (rc)
goto out;