static LIST_HEAD(ports_list);
static DEFINE_SPINLOCK(ports_lock);
-struct parport *parport_pc_probe_port(unsigned long int base,
- unsigned long int base_hi,
- int irq, int dma,
- struct device *dev,
- int irqflags)
+static struct parport *__parport_pc_probe_port(unsigned long int base,
+ unsigned long int base_hi,
+ int irq, int dma,
+ struct device *dev,
+ int irqflags,
+ unsigned int mode_mask)
{
struct parport_pc_private *priv;
struct parport_operations *ops;
p->dma != PARPORT_DMA_NOFIFO &&
priv->fifo_depth > 0 && p->irq != PARPORT_IRQ_NONE) {
p->modes |= PARPORT_MODE_ECP | PARPORT_MODE_COMPAT;
+ if (p->dma != PARPORT_DMA_NONE)
+ p->modes |= PARPORT_MODE_DMA;
+ } else
+ /* We can't use the DMA channel after all. */
+ p->dma = PARPORT_DMA_NONE;
+#endif /* Allowed to use FIFO/DMA */
+
+ p->modes &= ~mode_mask;
+
+#ifdef CONFIG_PARPORT_PC_FIFO
+ if ((p->modes & PARPORT_MODE_COMPAT) != 0)
p->ops->compat_write_data = parport_pc_compat_write_block_pio;
#ifdef CONFIG_PARPORT_1284
+ if ((p->modes & PARPORT_MODE_ECP) != 0)
p->ops->ecp_write_data = parport_pc_ecp_write_block_pio;
-#endif /* IEEE 1284 support */
- if (p->dma != PARPORT_DMA_NONE) {
+#endif
+ if ((p->modes & (PARPORT_MODE_ECP | PARPORT_MODE_COMPAT)) != 0) {
+ if ((p->modes & PARPORT_MODE_DMA) != 0)
pr_cont(", dma %d", p->dma);
- p->modes |= PARPORT_MODE_DMA;
- } else
+ else
pr_cont(", using FIFO");
- } else
- /* We can't use the DMA channel after all. */
- p->dma = PARPORT_DMA_NONE;
+ }
#endif /* Allowed to use FIFO/DMA */
pr_cont(" [");
platform_device_unregister(pdev);
return NULL;
}
+
+struct parport *parport_pc_probe_port(unsigned long int base,
+ unsigned long int base_hi,
+ int irq, int dma,
+ struct device *dev,
+ int irqflags)
+{
+ return __parport_pc_probe_port(base, base_hi, irq, dma,
+ dev, irqflags, 0);
+}
EXPORT_SYMBOL(parport_pc_probe_port);
void parport_pc_unregister_port(struct parport *p)