[linux.git] / sound / pci / au88x0 / au88x0_game.c

/*
 *  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 <[email protected]>, 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: [email protected]).
 */

#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
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Manuel Jander.
	3	*
	4	* Based on the work of:
	5	* Vojtech Pavlik
	6	* Raymond Ingles
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	* Should you need to contact me, the author, you can do so either by
	23	* e-mail - mail your message to <[email protected]>, or by paper mail:
	24	* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
	25	*
	26	* Based 90% on Vojtech Pavlik pcigame driver.
	27	* Merged and modified by Manuel Jander, for the OpenVortex
	28	* driver. (email: [email protected]).
	29	*/
	30
1da177e4 LT	31	#include <linux/time.h>
	32	#include <linux/delay.h>
	33	#include <linux/init.h>
	34	#include <sound/core.h>
	35	#include "au88x0.h"
	36	#include <linux/gameport.h>
d81a6d71	37	#include <linux/export.h>
1da177e4	38
b2fac073	39	#if IS_REACHABLE(CONFIG_GAMEPORT)
1da177e4 LT	40
	41	#define VORTEX_GAME_DWAIT 20 /* 20 ms */
	42
	43	static unsigned char vortex_game_read(struct gameport *gameport)
	44	{
	45	vortex_t *vortex = gameport_get_port_data(gameport);
	46	return hwread(vortex->mmio, VORTEX_GAME_LEGACY);
	47	}
	48
	49	static void vortex_game_trigger(struct gameport *gameport)
	50	{
	51	vortex_t *vortex = gameport_get_port_data(gameport);
	52	hwwrite(vortex->mmio, VORTEX_GAME_LEGACY, 0xff);
	53	}
	54
	55	static int
	56	vortex_game_cooked_read(struct gameport gameport, int axes, int *buttons)
	57	{
	58	vortex_t *vortex = gameport_get_port_data(gameport);
	59	int i;
	60
	61	*buttons = (~hwread(vortex->mmio, VORTEX_GAME_LEGACY) >> 4) & 0xf;
	62
	63	for (i = 0; i < 4; i++) {
	64	axes[i] =
	65	hwread(vortex->mmio, VORTEX_GAME_AXIS + (i * AXIS_SIZE));
	66	if (axes[i] == AXIS_RANGE)
	67	axes[i] = -1;
	68	}
	69	return 0;
	70	}
	71
	72	static int vortex_game_open(struct gameport *gameport, int mode)
	73	{
	74	vortex_t *vortex = gameport_get_port_data(gameport);
	75
	76	switch (mode) {
	77	case GAMEPORT_MODE_COOKED:
	78	hwwrite(vortex->mmio, VORTEX_CTRL2,
	79	hwread(vortex->mmio,
	80	VORTEX_CTRL2) \| CTRL2_GAME_ADCMODE);
	81	msleep(VORTEX_GAME_DWAIT);
	82	return 0;
	83	case GAMEPORT_MODE_RAW:
	84	hwwrite(vortex->mmio, VORTEX_CTRL2,
	85	hwread(vortex->mmio,
	86	VORTEX_CTRL2) & ~CTRL2_GAME_ADCMODE);
	87	return 0;
	88	default:
	89	return -1;
	90	}
	91
	92	return 0;
	93	}
	94
e23e7a14	95	static int vortex_gameport_register(vortex_t *vortex)
1da177e4 LT	96	{
	97	struct gameport *gp;
	98
	99	vortex->gameport = gp = gameport_allocate_port();
	100	if (!gp) {
70c84418 SM	101	dev_err(vortex->card->dev,
70c84418 SM	102	"cannot allocate memory for gameport\n");
1da177e4	103	return -ENOMEM;
395d9dd5	104	}
1da177e4 LT	105
	106	gameport_set_name(gp, "AU88x0 Gameport");
	107	gameport_set_phys(gp, "pci%s/gameport0", pci_name(vortex->pci_dev));
	108	gameport_set_dev_parent(gp, &vortex->pci_dev->dev);
	109
	110	gp->read = vortex_game_read;
	111	gp->trigger = vortex_game_trigger;
	112	gp->cooked_read = vortex_game_cooked_read;
	113	gp->open = vortex_game_open;
	114
	115	gameport_set_port_data(gp, vortex);
	116	gp->fuzz = 64;
	117
	118	gameport_register_port(gp);
	119
	120	return 0;
	121	}
	122
	123	static void vortex_gameport_unregister(vortex_t * vortex)
	124	{
	125	if (vortex->gameport) {
	126	gameport_unregister_port(vortex->gameport);
	127	vortex->gameport = NULL;
	128	}
	129	}
	130
	131	#else
	132	static inline int vortex_gameport_register(vortex_t * vortex) { return -ENOSYS; }
	133	static inline void vortex_gameport_unregister(vortex_t * vortex) { }
	134	#endif