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Commit 0995174d authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: gamecon - simplify pad type handling 



Instead of having array bitmasks by type for all gamepads have explicit
type field in every pad structure.

Tested-by: default avatarScott Moreau <oreaus@gmail.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 315543fd

drivers/input/joystick/gamecon.c

+123 −79
Original line number Diff line number Diff line
@@ -61,28 +61,36 @@ MODULE_PARM_DESC(map3, "Describes third set of devices"); 


/* see also gs_psx_delay parameter in PSX support section */



#define GC_SNES		1

#define GC_NES		2

#define GC_NES4		3

#define GC_MULTI	4

#define GC_MULTI2	5

#define GC_N64		6

#define GC_PSX		7

#define GC_DDR		8

#define GC_SNESMOUSE	9



#define GC_MAX		9

enum gc_type {

	GC_NONE = 0,

	GC_SNES,

	GC_NES,

	GC_NES4,

	GC_MULTI,

	GC_MULTI2,

	GC_N64,

	GC_PSX,

	GC_DDR,

	GC_SNESMOUSE,

	GC_MAX

};



#define GC_REFRESH_TIME	HZ/100



struct gc_pad {

	struct input_dev *dev;

	enum gc_type type;

	char phys[32];

};



struct gc {

	struct pardevice *pd;

	struct gc_pad pads[GC_MAX_DEVICES];

	struct input_dev *dev[GC_MAX_DEVICES];

	struct timer_list timer;

	unsigned char pads[GC_MAX + 1];

	int pad_count[GC_MAX];

	int used;

	struct mutex mutex;

	char phys[GC_MAX_DEVICES][32];

};



struct gc_subdev {
@@ -218,13 +226,13 @@ static void gc_n64_process_packet(struct gc *gc) 


	for (i = 0; i < GC_MAX_DEVICES; i++) {



		dev = gc->dev[i];

		if (!dev)

		if (gc->pads[i].type != GC_N64)

			continue;



		dev = gc->pads[i].dev;

		s = gc_status_bit[i];



		if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {

		if (s & ~(data[8] | data[9])) {



			x = y = 0;
@@ -363,39 +371,47 @@ static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data) 
static void gc_nes_process_packet(struct gc *gc)

{

	unsigned char data[GC_SNESMOUSE_LENGTH];

	struct gc_pad *pad;

	struct input_dev *dev;

	int i, j, s, len;

	char x_rel, y_rel;



	len = gc->pads[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH :

			(gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH);

	len = gc->pad_count[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH :

			(gc->pad_count[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH);



	gc_nes_read_packet(gc, len, data);



	for (i = 0; i < GC_MAX_DEVICES; i++) {



		pad = &gc->pads[i];

		dev = gc->dev[i];

		if (!dev)

			continue;



		s = gc_status_bit[i];



		if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {

		switch (pad->type) {



		case GC_NES:



			input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7]));

			input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5]));

		}



		if (s & gc->pads[GC_NES])

			for (j = 0; j < 4; j++)

				input_report_key(dev, gc_snes_btn[j],

						 s & data[gc_nes_bytes[j]]);

			input_sync(dev);

			break;



		case GC_SNES:



			input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7]));

			input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5]));



		if (s & gc->pads[GC_SNES])

			for (j = 0; j < 8; j++)

				input_report_key(dev, gc_snes_btn[j],

						 s & data[gc_snes_bytes[j]]);

			input_sync(dev);

			break;



		if (s & gc->pads[GC_SNESMOUSE]) {

		case GC_SNESMOUSE:

			/*

			 * The 4 unused bits from SNES controllers appear

			 * to be ID bits so use them to make sure we are
@@ -432,9 +448,14 @@ static void gc_nes_process_packet(struct gc *gc) 
						y_rel = -y_rel;

					input_report_rel(dev, REL_Y, y_rel);

				}



				input_sync(dev);

			}

			break;



		default:

			break;

		}

		input_sync(dev);

	}

}
@@ -462,32 +483,35 @@ static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data) 
static void gc_multi_process_packet(struct gc *gc)

{

	unsigned char data[GC_MULTI2_LENGTH];

	int data_len = gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH;

	int data_len = gc->pad_count[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH;

	struct gc_pad *pad;

	struct input_dev *dev;

	int i, s;



	gc_multi_read_packet(gc, data_len, data);



	for (i = 0; i < GC_MAX_DEVICES; i++) {



		dev = gc->dev[i];

		if (!dev)

			continue;



		pad = &gc->pads[i];

		dev = pad->dev;

		s = gc_status_bit[i];



		if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {

		switch (pad->type) {

		case GC_MULTI2:

			input_report_key(dev, BTN_THUMB, s & data[5]);

			/* fall through */



		case GC_MULTI:

			input_report_abs(dev, ABS_X,

					 !(s & data[2]) - !(s & data[3]));

			input_report_abs(dev, ABS_Y,

					 !(s & data[0]) - !(s & data[1]));

			input_report_key(dev, BTN_TRIGGER, s & data[4]);

		}



		if (s & gc->pads[GC_MULTI2])

			input_report_key(dev, BTN_THUMB, s & data[5]);



			input_sync(dev);

			break;



		default:

			break;

		}

	}

}
@@ -548,9 +572,16 @@ static void gc_psx_command(struct gc *gc, int b, unsigned char *data) 
		cmd = (b & 1) ? GC_PSX_COMMAND : 0;

		parport_write_data(port, cmd | GC_PSX_POWER);

		udelay(gc_psx_delay);



		read = parport_read_status(port) ^ 0x80;

		for (j = 0; j < GC_MAX_DEVICES; j++)

			data[j] |= (read & gc_status_bit[j] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) ? (1 << i) : 0;



		for (j = 0; j < GC_MAX_DEVICES; j++) {

			struct gc_pad *pad = &gc->pads[i];



			if (pad->type == GC_PSX || pad->type == GC_DDR)

				data[j] |= (read & gc_status_bit[j]) ? (1 << i) : 0;

		}



		parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);

		udelay(gc_psx_delay);

	}
@@ -561,7 +592,8 @@ static void gc_psx_command(struct gc *gc, int b, unsigned char *data) 
 * device identifier code.

 */



static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES],

static void gc_psx_read_packet(struct gc *gc,

			       unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES],

			       unsigned char id[GC_MAX_DEVICES])

{

	int i, j, max_len = 0;
@@ -582,12 +614,15 @@ static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES] 
	gc_psx_command(gc, 0, data2);		/* Dump status */



	/* Find the longest pad */

	for (i = 0; i < GC_MAX_DEVICES; i++)

		if ((gc_status_bit[i] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) &&

	for (i = 0; i < GC_MAX_DEVICES; i++) {

		struct gc_pad *pad = &gc->pads[i];



		if ((pad->type == GC_PSX || pad->type == GC_DDR) &&

		    GC_PSX_LEN(id[i]) > max_len &&

		    GC_PSX_LEN(id[i]) <= GC_PSX_BYTES) {

			max_len = GC_PSX_LEN(id[i]);

		}

	}



	/* Read in all the data */

	for (i = 0; i < max_len; i++) {
@@ -605,13 +640,13 @@ static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES] 
		id[i] = GC_PSX_ID(id[i]);

}



static void gc_psx_report_one(struct gc *gc, struct input_dev *dev,

			      unsigned char pad_type, unsigned char status_bit,

static void gc_psx_report_one(struct gc_pad *pad, unsigned char psx_type,

			      unsigned char *data)

{

	struct input_dev *dev = pad->dev;

	int i;



	switch (pad_type) {

	switch (psx_type) {



	case GC_PSX_RUMBLE:
@@ -621,7 +656,7 @@ static void gc_psx_report_one(struct gc *gc, struct input_dev *dev, 
	case GC_PSX_NEGCON:

	case GC_PSX_ANALOG:



		if (gc->pads[GC_DDR] & status_bit) {

		if (pad->type == GC_DDR) {

			for (i = 0; i < 4; i++)

				input_report_key(dev, gc_psx_ddr_btn[i],

						 ~data[0] & (0x10 << i));
@@ -647,7 +682,8 @@ static void gc_psx_report_one(struct gc *gc, struct input_dev *dev, 
		break;



	case GC_PSX_NORMAL:

		if (gc->pads[GC_DDR] & status_bit) {



		if (pad->type == GC_DDR) {

			for (i = 0; i < 4; i++)

				input_report_key(dev, gc_psx_ddr_btn[i],

						 ~data[0] & (0x10 << i));
@@ -679,7 +715,7 @@ static void gc_psx_report_one(struct gc *gc, struct input_dev *dev, 


		break;



	case 0: /* not a pad, ignore */

	default: /* not a pad, ignore */

		break;

	}

}
@@ -688,15 +724,15 @@ static void gc_psx_process_packet(struct gc *gc) 
{

	unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES];

	unsigned char id[GC_MAX_DEVICES];

	struct gc_pad *pad;

	int i;



	gc_psx_read_packet(gc, data, id);



	for (i = 0; i < GC_MAX_DEVICES; i++) {



		if (gc->dev[i])

			gc_psx_report_one(gc, gc->dev[i],

					  id[i], gc_status_bit[i], data[i]);

		pad = &gc->pads[i];

		if (pad->type == GC_PSX || pad->type == GC_DDR)

			gc_psx_report_one(pad, id[i], data[i]);

	}

}
@@ -712,28 +748,31 @@ static void gc_timer(unsigned long private) 
 * N64 pads - must be read first, any read confuses them for 200 us

 */



	if (gc->pads[GC_N64])

	if (gc->pad_count[GC_N64])

		gc_n64_process_packet(gc);



/*

 * NES and SNES pads or mouse

 */



	if (gc->pads[GC_NES] || gc->pads[GC_SNES] || gc->pads[GC_SNESMOUSE])

	if (gc->pad_count[GC_NES] ||

	    gc->pad_count[GC_SNES] ||

	    gc->pad_count[GC_SNESMOUSE]) {

		gc_nes_process_packet(gc);

	}



/*

 * Multi and Multi2 joysticks

 */



	if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2])

	if (gc->pad_count[GC_MULTI] || gc->pad_count[GC_MULTI2])

		gc_multi_process_packet(gc);



/*

 * PSX controllers

 */



	if (gc->pads[GC_PSX] || gc->pads[GC_DDR])

	if (gc->pad_count[GC_PSX] || gc->pad_count[GC_DDR])

		gc_psx_process_packet(gc);



	mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
@@ -773,26 +812,29 @@ static void gc_close(struct input_dev *dev) 


static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type)

{

	struct gc_pad *pad = &gc->pads[idx];

	struct input_dev *input_dev;

	int i;

	int err;



	if (!pad_type)

		return 0;



	if (pad_type < 1 || pad_type > GC_MAX) {

		printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", pad_type);

		return -EINVAL;

	}



	gc->dev[idx] = input_dev = input_allocate_device();

	pad->dev = input_dev = input_allocate_device();

	if (!input_dev) {

		printk(KERN_ERR "gamecon.c: Not enough memory for input device\n");

		return -ENOMEM;

	}



	pad->type = pad_type;



	snprintf(pad->phys, sizeof(pad->phys),

		 "%s/input%d", gc->pd->port->name, idx);



	input_dev->name = gc_names[pad_type];

	input_dev->phys = gc->phys[idx];

	input_dev->phys = pad->phys;

	input_dev->id.bustype = BUS_PARPORT;

	input_dev->id.vendor = 0x0001;

	input_dev->id.product = pad_type;
@@ -811,8 +853,7 @@ static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type) 
	} else

		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);



	gc->pads[0] |= gc_status_bit[idx];

	gc->pads[pad_type] |= gc_status_bit[idx];

	gc->pad_count[pad_type]++;



	switch (pad_type) {
@@ -828,8 +869,7 @@ static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type) 
		err = gc_n64_init_ff(input_dev, idx);

		if (err) {

			printk(KERN_WARNING "gamecon.c: Failed to initiate rumble for N64 device %d\n", idx);

			input_free_device(input_dev);

			return err;

			goto err_free_dev;

		}



		break;
@@ -873,7 +913,16 @@ static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type) 
		break;

	}



	err = input_register_device(pad->dev);

	if (err)

		goto err_free_dev;



	return 0;



err_free_dev:

	input_free_device(pad->dev);

	pad->dev = NULL;

	return err;

}



static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
@@ -882,6 +931,7 @@ static struct gc __init *gc_probe(int parport, int *pads, int n_pads) 
	struct parport *pp;

	struct pardevice *pd;

	int i;

	int count = 0;

	int err;



	pp = parport_find_number(parport);
@@ -913,18 +963,14 @@ static struct gc __init *gc_probe(int parport, int *pads, int n_pads) 
		if (!pads[i])

			continue;



		snprintf(gc->phys[i], sizeof(gc->phys[i]),

			 "%s/input%d", gc->pd->port->name, i);

		err = gc_setup_pad(gc, i, pads[i]);

		if (err)

			goto err_unreg_devs;



		err = input_register_device(gc->dev[i]);

		if (err)

			goto err_free_dev;

		count++;

	}



	if (!gc->pads[0]) {

	if (count == 0) {

		printk(KERN_ERR "gamecon.c: No valid devices specified\n");

		err = -EINVAL;

		goto err_free_gc;
@@ -933,12 +979,10 @@ static struct gc __init *gc_probe(int parport, int *pads, int n_pads) 
	parport_put_port(pp);

	return gc;



 err_free_dev:

	input_free_device(gc->dev[i]);

 err_unreg_devs:

	while (--i >= 0)

		if (gc->dev[i])

			input_unregister_device(gc->dev[i]);

		if (gc->pads[i].dev)

			input_unregister_device(gc->pads[i].dev);

 err_free_gc:

	kfree(gc);

 err_unreg_pardev:
@@ -954,8 +998,8 @@ static void gc_remove(struct gc *gc) 
	int i;



	for (i = 0; i < GC_MAX_DEVICES; i++)

		if (gc->dev[i])

			input_unregister_device(gc->dev[i]);

		if (gc->pads[i].dev)

			input_unregister_device(gc->pads[i].dev);

	parport_unregister_device(gc->pd);

	kfree(gc);

}