diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/pci/au88x0/au88x0_game.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/sound/pci/au88x0/au88x0_game.c b/sound/pci/au88x0/au88x0_game.c new file mode 100644 index 000000000..53abcd3ec --- /dev/null +++ b/sound/pci/au88x0/au88x0_game.c @@ -0,0 +1,134 @@ +/* + * Manuel Jander. + * + * Based on the work of: + * Vojtech Pavlik + * Raymond Ingles + * + * 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 + * + * 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 |