diff options
Diffstat (limited to 'drivers/input/gameport/fm801-gp.c')
| -rw-r--r-- | drivers/input/gameport/fm801-gp.c | 144 |
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"); |