static int __init tx4938ide_probe(struct platform_device *pdev)
{
struct ide_hw hw, *hws[] = { &hw };
struct ide_host *host;
struct resource *res;
struct tx4938ide_platform_info *pdata = pdev->dev.platform_data;
int irq, ret, i;
unsigned long mapbase, mapctl;
struct ide_port_info d = tx4938ide_port_info;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return -ENODEV;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENODEV;
if (!devm_request_mem_region(&pdev->dev, res->start,
resource_size(res), "tx4938ide"))
return -EBUSY;
mapbase = (unsigned long)devm_ioremap(&pdev->dev, res->start,
8 << pdata->ioport_shift);
mapctl = (unsigned long)devm_ioremap(&pdev->dev,
res->start + 0x10000 +
(6 << pdata->ioport_shift),
1 << pdata->ioport_shift);
if (!mapbase || !mapctl)
return -EBUSY;
memset(&hw, 0, sizeof(hw));
if (pdata->ioport_shift) {
unsigned long port = mapbase;
unsigned long ctl = mapctl;
hw.io_ports_array[0] = port;
#ifdef __BIG_ENDIAN
port++;
ctl++;
#endif
for (i = 1; i <= 7; i++)
hw.io_ports_array[i] =
port + (i << pdata->ioport_shift);
hw.io_ports.ctl_addr = ctl;
} else
ide_std_init_ports(&hw, mapbase, mapctl);
hw.irq = irq;
hw.dev = &pdev->dev;
pr_info("TX4938 IDE interface (base %#lx, ctl %#lx, irq %d)\n",
mapbase, mapctl, hw.irq);
if (pdata->gbus_clock)
tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, 0);
else
d.port_ops = NULL;
ret = ide_host_add(&d, hws, 1, &host);
if (!ret)
platform_set_drvdata(pdev, host);
return ret;
}
static void tx4938ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
struct tx4938ide_platform_info *pdata = hwif->dev->platform_data;
u8 safe = drive->pio_mode - XFER_PIO_0;
ide_drive_t *pair;
pair = ide_get_pair_dev(drive);
if (pair)
safe = min(safe, pair->pio_mode - XFER_PIO_0);
tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, safe);
}
static void tx4938ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
ide_hwif_t *hwif = drive->hwif;
struct tx4938ide_platform_info *pdata = hwif->dev->platform_data;
u8 safe = pio;
ide_drive_t *pair;
pair = ide_get_pair_dev(drive);
if (pair)
safe = min(safe, ide_get_best_pio_mode(pair, 255, 5));
tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, safe);
}
