parport->dev driver model support

Currently a parport_driver can't get a handle on the device node for the
underlying parport (PNPACPI, PCI, etc).  That prevents correct placement of
sysfs child nodes, which can affect things like power management.

This patch adds a field to "struct parport" pointing to that device node, and
updates non-legacy port drivers to initialize that device pointer.  That field
replaces the analagous PCI-only support in parport_pc.

[akpm@linux-foundation.org: fix powerpc build]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 17 insertions, 14 deletions

diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index 3de2623afa13..c3240a67ef85 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -620,6 +620,7 @@ static size_t parport_pc_fifo_write_block_dma (struct parport *port,
         unsigned long dmaflag;
         size_t left = length;
         const struct parport_pc_private *priv = port->physport->private_data;
+        struct device *dev = port->physport->dev;
         dma_addr_t dma_addr, dma_handle;
         size_t maxlen = 0x10000; /* max 64k per DMA transfer */
         unsigned long start = (unsigned long) buf;
@@ -631,8 +632,8 @@ dump_parport_state ("enter fifo_write_block_dma", port);
                 if ((start ^ end) & ~0xffffUL)
                         maxlen = 0x10000 - (start & 0xffff);
 
-                dma_addr = dma_handle = pci_map_single(priv->dev, (void *)buf, length,
-                                                       PCI_DMA_TODEVICE);
+                dma_addr = dma_handle = dma_map_single(dev, (void *)buf, length,
+                                                       DMA_TO_DEVICE);
         } else {
                 /* above 16 MB we use a bounce buffer as ISA-DMA is not possible */
                 maxlen   = PAGE_SIZE;          /* sizeof(priv->dma_buf) */
@@ -728,9 +729,9 @@ dump_parport_state ("enter fifo_write_block_dma", port);
 
         /* Turn off DMA mode */
         frob_econtrol (port, 1<<3, 0);
-        
+
         if (dma_handle)
-                pci_unmap_single(priv->dev, dma_handle, length, PCI_DMA_TODEVICE);
+                dma_unmap_single(dev, dma_handle, length, DMA_TO_DEVICE);
 
 dump_parport_state ("leave fifo_write_block_dma", port);
         return length - left;
@@ -2146,7 +2147,7 @@ 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 pci_dev *dev)
+                                       struct device *dev)
 {
         struct parport_pc_private *priv;
         struct parport_operations *ops;
@@ -2180,9 +2181,10 @@ struct parport *parport_pc_probe_port (unsigned long int base,
         priv->fifo_depth = 0;
         priv->dma_buf = NULL;
         priv->dma_handle = 0;
-        priv->dev = dev;
         INIT_LIST_HEAD(&priv->list);
         priv->port = p;
+
+        p->dev = dev;
         p->base_hi = base_hi;
         p->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT;
         p->private_data = priv;
@@ -2305,9 +2307,10 @@ struct parport *parport_pc_probe_port (unsigned long int base,
                                 p->dma = PARPORT_DMA_NONE;
                         } else {
                                 priv->dma_buf =
-                                  pci_alloc_consistent(priv->dev,
+                                  dma_alloc_coherent(dev,
                                                        PAGE_SIZE,
-                                                       &priv->dma_handle);
+                                                       &priv->dma_handle,
+                                                       GFP_KERNEL);
                                 if (! priv->dma_buf) {
                                         printk (KERN_WARNING "%s: "
                                                 "cannot get buffer for DMA, "
@@ -2383,7 +2386,7 @@ void parport_pc_unregister_port (struct parport *p)
                 release_region(p->base_hi, 3);
 #if defined(CONFIG_PARPORT_PC_FIFO) && defined(HAS_DMA)
         if (priv->dma_buf)
-                pci_free_consistent(priv->dev, PAGE_SIZE,
+                dma_free_coherent(p->physport->dev, PAGE_SIZE,
                                     priv->dma_buf,
                                     priv->dma_handle);
 #endif
@@ -2489,7 +2492,7 @@ static int __devinit sio_ite_8872_probe (struct pci_dev *pdev, int autoirq,
          */
         release_resource(base_res);
         if (parport_pc_probe_port (ite8872_lpt, ite8872_lpthi,
-                                   irq, PARPORT_DMA_NONE, NULL)) {
+                                   irq, PARPORT_DMA_NONE, &pdev->dev)) {
                 printk (KERN_INFO
                         "parport_pc: ITE 8872 parallel port: io=0x%X",
                         ite8872_lpt);
@@ -2672,7 +2675,7 @@ static int __devinit sio_via_probe (struct pci_dev *pdev, int autoirq,
         }
 
         /* finally, do the probe with values obtained */
-        if (parport_pc_probe_port (port1, port2, irq, dma, NULL)) {
+        if (parport_pc_probe_port (port1, port2, irq, dma, &pdev->dev)) {
                 printk (KERN_INFO
                         "parport_pc: VIA parallel port: io=0x%X", port1);
                 if (irq != PARPORT_IRQ_NONE)
@@ -2970,7 +2973,7 @@ static int parport_pc_pci_probe (struct pci_dev *dev,
                         parport_pc_pci_tbl[i + last_sio].device, io_lo, io_hi);
                 data->ports[count] =
                         parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
-                                               PARPORT_DMA_NONE, dev);
+                                               PARPORT_DMA_NONE, &dev->dev);
                 if (data->ports[count])
                         count++;
         }
@@ -3077,8 +3080,8 @@ static int parport_pc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id
         } else
                 dma = PARPORT_DMA_NONE;
 
-        printk(KERN_INFO "parport: PnPBIOS parport detected.\n");
-        if (!(pdata = parport_pc_probe_port (io_lo, io_hi, irq, dma, NULL)))
+        dev_info(&dev->dev, "reported by %s\n", dev->protocol->name);
+        if (!(pdata = parport_pc_probe_port (io_lo, io_hi, irq, dma, &dev->dev)))
                 return -ENODEV;
 
         pnp_set_drvdata(dev,pdata);