Staging: add dt3155 driver

This is a driver for the DT3155 Digitizer

Signed-off-by: Scott Smedley <ss@aao.gov.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 97 insertions, 0 deletions

diff --git a/drivers/staging/dt3155/pci-compat.h b/drivers/staging/dt3155/pci-compat.h
new file mode 100644
index 00000000000..5f47d5a94d4
--- /dev/null
+++ b/drivers/staging/dt3155/pci-compat.h
@@ -0,0 +1,97 @@
+
+/* This header only makes send when included in a 2.0 compile */
+
+#ifndef _PCI_COMPAT_H_
+#define _PCI_COMPAT_H_
+
+#ifdef __KERNEL__
+
+#include <linux/bios32.h> /* pcibios_* */
+#include <linux/pci.h> /* pcibios_* */
+#include <linux/malloc.h> /* kmalloc */
+
+/* fake the new pci interface based on the old one: encapsulate bus/devfn */
+struct pci_fake_dev {
+    u8 bus;
+    u8 devfn;
+    int index;
+};
+#define pci_dev pci_fake_dev /* the other pci_dev is unused by 2.0 drivers */
+
+extern inline struct pci_dev *pci_find_device(unsigned int vendorid,
+					      unsigned int devid,
+					      struct pci_dev *from)
+{
+    struct pci_dev *pptr = kmalloc(sizeof(*pptr), GFP_KERNEL);
+    int index = 0;
+    int ret;
+
+    if (!pptr) return NULL;
+    if (from) index = pptr->index + 1;
+    ret = pcibios_find_device(vendorid, devid, index,
+			      &pptr->bus, &pptr->devfn);
+    if (ret) { kfree(pptr); return NULL; }
+    return pptr;
+}
+
+extern inline struct pci_dev *pci_find_class(unsigned int class,
+					     struct pci_dev *from)
+{
+    return NULL; /* FIXME */
+}
+
+extern inline void pci_release_device(struct pci_dev *dev)
+{
+    kfree(dev);
+}
+
+/* struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn); */
+
+#define pci_present pcibios_present
+
+extern inline int
+pci_read_config_byte(struct pci_dev *dev, u8 where, u8 *val)
+{
+    return pcibios_read_config_byte(dev->bus, dev->devfn, where, val);
+}
+
+extern inline int
+pci_read_config_word(struct pci_dev *dev, u8 where, u16 *val)
+{
+    return pcibios_read_config_word(dev->bus, dev->devfn, where, val);
+}
+
+extern inline int
+pci_read_config_dword(struct pci_dev *dev, u8 where, u32 *val)
+{
+    return pcibios_read_config_dword(dev->bus, dev->devfn, where, val);
+}
+
+extern inline int
+pci_write_config_byte(struct pci_dev *dev, u8 where, u8 val)
+{
+    return pcibios_write_config_byte(dev->bus, dev->devfn, where, val);
+}
+
+extern inline int
+pci_write_config_word(struct pci_dev *dev, u8 where, u16 val)
+{
+    return pcibios_write_config_word(dev->bus, dev->devfn, where, val);
+}
+
+extern inline int
+pci_write_config_dword(struct pci_dev *dev, u8 where, u32 val)
+{
+    return pcibios_write_config_dword(dev->bus, dev->devfn, where, val);
+}
+
+extern inline void pci_set_master(struct pci_dev *dev)
+{
+    u16 cmd;
+    pcibios_read_config_word(dev->bus, dev->devfn, PCI_COMMAND, &cmd);
+    cmd |= PCI_COMMAND_MASTER;
+    pcibios_write_config_word(dev->bus, dev->devfn, PCI_COMMAND, cmd);
+}
+
+#endif /* __KERNEL__ */
+#endif /* _PCI_COMPAT_H_ */