palm_bk3710: add UltraDMA/100 support

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>

diff --git a/drivers/ide/arm/palm_bk3710.c b/drivers/ide/arm/palm_bk3710.c
index 65bb4b8..3e842d6 100644 (file)
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/arm/palm_bk3710.c
@@ -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;