linux/sound/pci/au88x0/au88x0_game.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

122 lines
2.9 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Manuel Jander.
*
* Based on the work of:
* Vojtech Pavlik
* Raymond Ingles
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*
* Based 90% on Vojtech Pavlik pcigame driver.
* Merged and modified by Manuel Jander, for the OpenVortex
* driver. (email: mjander@embedded.cl).
*/
#include <linux/time.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <sound/core.h>
#include "au88x0.h"
#include <linux/gameport.h>
#include <linux/export.h>
#if IS_REACHABLE(CONFIG_GAMEPORT)
#define VORTEX_GAME_DWAIT 20 /* 20 ms */
static unsigned char vortex_game_read(struct gameport *gameport)
{
vortex_t *vortex = gameport_get_port_data(gameport);
return hwread(vortex->mmio, VORTEX_GAME_LEGACY);
}
static void vortex_game_trigger(struct gameport *gameport)
{
vortex_t *vortex = gameport_get_port_data(gameport);
hwwrite(vortex->mmio, VORTEX_GAME_LEGACY, 0xff);
}
static int
vortex_game_cooked_read(struct gameport *gameport, int *axes, int *buttons)
{
vortex_t *vortex = gameport_get_port_data(gameport);
int i;
*buttons = (~hwread(vortex->mmio, VORTEX_GAME_LEGACY) >> 4) & 0xf;
for (i = 0; i < 4; i++) {
axes[i] =
hwread(vortex->mmio, VORTEX_GAME_AXIS + (i * AXIS_SIZE));
if (axes[i] == AXIS_RANGE)
axes[i] = -1;
}
return 0;
}
static int vortex_game_open(struct gameport *gameport, int mode)
{
vortex_t *vortex = gameport_get_port_data(gameport);
switch (mode) {
case GAMEPORT_MODE_COOKED:
hwwrite(vortex->mmio, VORTEX_CTRL2,
hwread(vortex->mmio,
VORTEX_CTRL2) | CTRL2_GAME_ADCMODE);
msleep(VORTEX_GAME_DWAIT);
return 0;
case GAMEPORT_MODE_RAW:
hwwrite(vortex->mmio, VORTEX_CTRL2,
hwread(vortex->mmio,
VORTEX_CTRL2) & ~CTRL2_GAME_ADCMODE);
return 0;
default:
return -1;
}
return 0;
}
static int vortex_gameport_register(vortex_t *vortex)
{
struct gameport *gp;
vortex->gameport = gp = gameport_allocate_port();
if (!gp) {
dev_err(vortex->card->dev,
"cannot allocate memory for gameport\n");
return -ENOMEM;
}
gameport_set_name(gp, "AU88x0 Gameport");
gameport_set_phys(gp, "pci%s/gameport0", pci_name(vortex->pci_dev));
gameport_set_dev_parent(gp, &vortex->pci_dev->dev);
gp->read = vortex_game_read;
gp->trigger = vortex_game_trigger;
gp->cooked_read = vortex_game_cooked_read;
gp->open = vortex_game_open;
gameport_set_port_data(gp, vortex);
gp->fuzz = 64;
gameport_register_port(gp);
return 0;
}
static void vortex_gameport_unregister(vortex_t * vortex)
{
if (vortex->gameport) {
gameport_unregister_port(vortex->gameport);
vortex->gameport = NULL;
}
}
#else
static inline int vortex_gameport_register(vortex_t * vortex) { return -ENOSYS; }
static inline void vortex_gameport_unregister(vortex_t * vortex) { }
#endif