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path: root/drivers/input/gameport/fm801-gp.c
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Diffstat (limited to 'drivers/input/gameport/fm801-gp.c')
-rw-r--r--drivers/input/gameport/fm801-gp.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/input/gameport/fm801-gp.c b/drivers/input/gameport/fm801-gp.c
new file mode 100644
index 000000000..e785d36b1
--- /dev/null
+++ b/drivers/input/gameport/fm801-gp.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * FM801 gameport driver for Linux
+ *
+ * Copyright (c) by Takashi Iwai <tiwai@suse.de>
+ */
+
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/gameport.h>
+
+#define PCI_VENDOR_ID_FORTEMEDIA 0x1319
+#define PCI_DEVICE_ID_FM801_GP 0x0802
+
+#define HAVE_COOKED
+
+struct fm801_gp {
+ struct gameport *gameport;
+ struct resource *res_port;
+};
+
+#ifdef HAVE_COOKED
+static int fm801_gp_cooked_read(struct gameport *gameport, int *axes, int *buttons)
+{
+ unsigned short w;
+
+ w = inw(gameport->io + 2);
+ *buttons = (~w >> 14) & 0x03;
+ axes[0] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
+ w = inw(gameport->io + 4);
+ axes[1] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
+ w = inw(gameport->io + 6);
+ *buttons |= ((~w >> 14) & 0x03) << 2;
+ axes[2] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
+ w = inw(gameport->io + 8);
+ axes[3] = (w == 0xffff) ? -1 : ((w & 0x1fff) << 5);
+ outw(0xff, gameport->io); /* reset */
+
+ return 0;
+}
+#endif
+
+static int fm801_gp_open(struct gameport *gameport, int mode)
+{
+ switch (mode) {
+#ifdef HAVE_COOKED
+ case GAMEPORT_MODE_COOKED:
+ return 0;
+#endif
+ case GAMEPORT_MODE_RAW:
+ return 0;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+static int fm801_gp_probe(struct pci_dev *pci, const struct pci_device_id *id)
+{
+ struct fm801_gp *gp;
+ struct gameport *port;
+ int error;
+
+ gp = kzalloc(sizeof(struct fm801_gp), GFP_KERNEL);
+ port = gameport_allocate_port();
+ if (!gp || !port) {
+ printk(KERN_ERR "fm801-gp: Memory allocation failed\n");
+ error = -ENOMEM;
+ goto err_out_free;
+ }
+
+ error = pci_enable_device(pci);
+ if (error)
+ goto err_out_free;
+
+ port->open = fm801_gp_open;
+#ifdef HAVE_COOKED
+ port->cooked_read = fm801_gp_cooked_read;
+#endif
+ gameport_set_name(port, "FM801");
+ gameport_set_phys(port, "pci%s/gameport0", pci_name(pci));
+ port->dev.parent = &pci->dev;
+ port->io = pci_resource_start(pci, 0);
+
+ gp->gameport = port;
+ gp->res_port = request_region(port->io, 0x10, "FM801 GP");
+ if (!gp->res_port) {
+ printk(KERN_DEBUG "fm801-gp: unable to grab region 0x%x-0x%x\n",
+ port->io, port->io + 0x0f);
+ error = -EBUSY;
+ goto err_out_disable_dev;
+ }
+
+ pci_set_drvdata(pci, gp);
+
+ outb(0x60, port->io + 0x0d); /* enable joystick 1 and 2 */
+ gameport_register_port(port);
+
+ return 0;
+
+ err_out_disable_dev:
+ pci_disable_device(pci);
+ err_out_free:
+ gameport_free_port(port);
+ kfree(gp);
+ return error;
+}
+
+static void fm801_gp_remove(struct pci_dev *pci)
+{
+ struct fm801_gp *gp = pci_get_drvdata(pci);
+
+ gameport_unregister_port(gp->gameport);
+ release_resource(gp->res_port);
+ kfree(gp);
+
+ pci_disable_device(pci);
+}
+
+static const struct pci_device_id fm801_gp_id_table[] = {
+ { PCI_VENDOR_ID_FORTEMEDIA, PCI_DEVICE_ID_FM801_GP, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, fm801_gp_id_table);
+
+static struct pci_driver fm801_gp_driver = {
+ .name = "FM801_gameport",
+ .id_table = fm801_gp_id_table,
+ .probe = fm801_gp_probe,
+ .remove = fm801_gp_remove,
+};
+
+module_pci_driver(fm801_gp_driver);
+
+MODULE_DESCRIPTION("FM801 gameport driver");
+MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
+MODULE_LICENSE("GPL");