[PATCH] drivers/input/joystick: convert to dynamic input_dev allocation

Input: convert drivers/input/joystick to dynamic input_dev allocation

This is required for input_dev sysfs integration

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 192 insertions, 132 deletions

diff --git a/drivers/input/joystick/tmdc.c b/drivers/input/joystick/tmdc.c
index 7431efc4330..3a7d1bb4647 100644
--- a/drivers/input/joystick/tmdc.c
+++ b/drivers/input/joystick/tmdc.c
@@ -63,37 +63,70 @@ MODULE_LICENSE("GPL");
 #define TMDC_ABS_HAT		4
 #define TMDC_BTN		16
 
-static unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
-static unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };
+static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
+static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };
 
-static signed char tmdc_abs[TMDC_ABS] =
+static const signed char tmdc_abs[TMDC_ABS] =
 	{ ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
-static signed char tmdc_abs_hat[TMDC_ABS_HAT] =
+static const signed char tmdc_abs_hat[TMDC_ABS_HAT] =
 	{ ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
-static signed char tmdc_abs_at[TMDC_ABS] =
+static const signed char tmdc_abs_at[TMDC_ABS] =
 	{ ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
-static signed char tmdc_abs_fm[TMDC_ABS] =
+static const signed char tmdc_abs_fm[TMDC_ABS] =
 	{ ABS_RX, ABS_RY, ABS_X, ABS_Y };
 
-static short tmdc_btn_pad[TMDC_BTN] =
+static const short tmdc_btn_pad[TMDC_BTN] =
 	{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
-static short tmdc_btn_joy[TMDC_BTN] =
+static const short tmdc_btn_joy[TMDC_BTN] =
 	{ BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
 	  BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
-static short tmdc_btn_fm[TMDC_BTN] =
+static const short tmdc_btn_fm[TMDC_BTN] =
         { BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
-static short tmdc_btn_at[TMDC_BTN] =
+static const short tmdc_btn_at[TMDC_BTN] =
         { BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
           BTN_BASE3, BTN_BASE2, BTN_BASE };
 
-static struct {
+static const struct {
         int x;
         int y;
 } tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};
 
+static const struct tmdc_model {
+	unsigned char id;
+	const char *name;
+	char abs;
+	char hats;
+	char btnc[4];
+	char btno[4];
+	const signed char *axes;
+	const short *buttons;
+} tmdc_models[] = {
+	{   1, "ThrustMaster Millenium 3D Inceptor",	  6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
+	{   3, "ThrustMaster Rage 3D Gamepad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
+	{   4, "ThrustMaster Attack Throttle",		  5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
+	{   8, "ThrustMaster FragMaster",		  4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
+	{ 163, "Thrustmaster Fusion GamePad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
+	{   0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }
+};
+
+
+struct tmdc_port {
+	struct input_dev *dev;
+	char name[64];
+	char phys[32];
+	int mode;
+	const signed char *abs;
+	const short *btn;
+	unsigned char absc;
+	unsigned char btnc[4];
+	unsigned char btno[4];
+};
+
 struct tmdc {
 	struct gameport *gameport;
-	struct input_dev dev[2];
+	struct tmdc_port *port[2];
+#if 0
+	struct input_dev *dev[2];
 	char name[2][64];
 	char phys[2][32];
 	int mode[2];
@@ -102,6 +135,7 @@ struct tmdc {
 	unsigned char absc[2];
 	unsigned char btnc[2][4];
 	unsigned char btno[2][4];
+#endif
 	int reads;
 	int bads;
 	unsigned char exists;
@@ -156,6 +190,50 @@ static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMD
 	return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1);
 }
 
+static int tmdc_parse_packet(struct tmdc_port *port, unsigned char *data)
+{
+	int i, k, l;
+
+	if (data[TMDC_BYTE_ID] != port->mode)
+		return -1;
+
+	for (i = 0; i < port->absc; i++) {
+		if (port->abs[i] < 0)
+			return 0;
+
+		input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]);
+	}
+
+	switch (port->mode) {
+
+		case TMDC_MODE_M3DI:
+
+			i = tmdc_byte_d[0];
+			input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1));
+			input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i]       & 1));
+			break;
+
+		case TMDC_MODE_AT:
+
+			i = tmdc_byte_a[3];
+			input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x);
+			input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y);
+			break;
+
+	}
+
+	for (k = l = 0; k < 4; k++) {
+		for (i = 0; i < port->btnc[k]; i++)
+			input_report_key(port->dev, port->btn[i + l],
+				((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1));
+		l += port->btnc[k];
+	}
+
+	input_sync(port->dev);
+
+	return 0;
+}
+
 /*
  * tmdc_poll() reads and analyzes ThrustMaster joystick data.
  */
@@ -164,57 +242,21 @@ static void tmdc_poll(struct gameport *gameport)
 {
 	unsigned char data[2][TMDC_MAX_LENGTH];
 	struct tmdc *tmdc = gameport_get_drvdata(gameport);
-	struct input_dev *dev;
 	unsigned char r, bad = 0;
-	int i, j, k, l;
+	int i;
 
 	tmdc->reads++;
 
 	if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
 		bad = 1;
-	else
-
-	for (j = 0; j < 2; j++)
-		if (r & (1 << j) & tmdc->exists) {
-
-			if (data[j][TMDC_BYTE_ID] != tmdc->mode[j]) {
-				bad = 1;
-				continue;
-			}
-
-			dev = tmdc->dev + j;
-
-			for (i = 0; i < tmdc->absc[j]; i++) {
-				if (tmdc->abs[j][i] < 0) continue;
-				input_report_abs(dev, tmdc->abs[j][i], data[j][tmdc_byte_a[i]]);
-			}
-
-			switch (tmdc->mode[j]) {
+	else {
+		for (i = 0; i < 2; i++) {
+			if (r & (1 << i) & tmdc->exists) {
 
-				case TMDC_MODE_M3DI:
-
-					i = tmdc_byte_d[0];
-					input_report_abs(dev, ABS_HAT0X, ((data[j][i] >> 3) & 1) - ((data[j][i] >> 1) & 1));
-					input_report_abs(dev, ABS_HAT0Y, ((data[j][i] >> 2) & 1) - ( data[j][i]       & 1));
-					break;
-
-				case TMDC_MODE_AT:
-
-					i = tmdc_byte_a[3];
-					input_report_abs(dev, ABS_HAT0X, tmdc_hat_to_axis[(data[j][i] - 141) / 25].x);
-					input_report_abs(dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[j][i] - 141) / 25].y);
-					break;
-
-			}
-
-			for (k = l = 0; k < 4; k++) {
-				for (i = 0; i < tmdc->btnc[j][k]; i++)
-					input_report_key(dev, tmdc->btn[j][i + l],
-						((data[j][tmdc_byte_d[k]] >> (i + tmdc->btno[j][k])) & 1));
-				l += tmdc->btnc[j][k];
+				if (tmdc_parse_packet(tmdc->port[i], data[i]))
+					bad = 1;
 			}
-
-			input_sync(dev);
+		}
 	}
 
 	tmdc->bads += bad;
@@ -235,31 +277,89 @@ static void tmdc_close(struct input_dev *dev)
 	gameport_stop_polling(tmdc->gameport);
 }
 
+static int tmdc_setup_port(struct tmdc *tmdc, int idx, unsigned char *data)
+{
+	const struct tmdc_model *model;
+	struct tmdc_port *port;
+	struct input_dev *input_dev;
+	int i, j, b = 0;
+
+	tmdc->port[idx] = port = kzalloc(sizeof (struct tmdc_port), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!port || !input_dev) {
+		kfree(port);
+		input_free_device(input_dev);
+		return -ENOMEM;
+	}
+
+	port->mode = data[TMDC_BYTE_ID];
+
+	for (model = tmdc_models; model->id && model->id != port->mode; model++)
+		/* empty */;
+
+	port->abs = model->axes;
+	port->btn = model->buttons;
+
+	if (!model->id) {
+		port->absc = data[TMDC_BYTE_DEF] >> 4;
+		for (i = 0; i < 4; i++)
+			port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
+	} else {
+		port->absc = model->abs;
+		for (i = 0; i < 4; i++)
+			port->btnc[i] = model->btnc[i];
+	}
+
+	for (i = 0; i < 4; i++)
+		port->btno[i] = model->btno[i];
+
+	snprintf(port->name, sizeof(port->name), model->name,
+		 port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode);
+	snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i);
+
+	port->dev = input_dev;
+
+	input_dev->name = port->name;
+	input_dev->phys = port->phys;
+	input_dev->id.bustype = BUS_GAMEPORT;
+	input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
+	input_dev->id.product = model->id;
+	input_dev->id.version = 0x0100;
+	input_dev->cdev.dev = &tmdc->gameport->dev;
+	input_dev->private = tmdc;
+
+	input_dev->open = tmdc_open;
+	input_dev->close = tmdc_close;
+
+	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+
+	for (i = 0; i < port->absc && i < TMDC_ABS; i++)
+		if (port->abs[i] >= 0)
+			input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4);
+
+	for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++)
+		input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0);
+
+	for (i = 0; i < 4; i++) {
+		for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++)
+			set_bit(port->btn[j + b], input_dev->keybit);
+		b += port->btnc[i];
+	}
+
+	input_register_device(port->dev);
+
+	return 0;
+}
+
 /*
  * tmdc_probe() probes for ThrustMaster type joysticks.
  */
 
 static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv)
 {
-	static struct models {
-		unsigned char id;
-		char *name;
-		char abs;
-		char hats;
-		char btnc[4];
-		char btno[4];
-		signed char *axes;
-		short *buttons;
-	} models[] = {	{   1, "ThrustMaster Millenium 3D Inceptor",	  6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
-			{   3, "ThrustMaster Rage 3D Gamepad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
-			{   4, "ThrustMaster Attack Throttle",		  5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
-			{   8, "ThrustMaster FragMaster",		  4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
-			{ 163, "Thrustmaster Fusion GamePad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
-			{   0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }};
-
 	unsigned char data[2][TMDC_MAX_LENGTH];
 	struct tmdc *tmdc;
-	int i, j, k, l, m;
+	int i;
 	int err;
 
 	if (!(tmdc = kzalloc(sizeof(struct tmdc), GFP_KERNEL)))
@@ -281,68 +381,25 @@ static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv)
 	gameport_set_poll_handler(gameport, tmdc_poll);
 	gameport_set_poll_interval(gameport, 20);
 
-	for (j = 0; j < 2; j++)
-		if (tmdc->exists & (1 << j)) {
+	for (i = 0; i < 2; i++) {
+		if (tmdc->exists & (1 << i)) {
 
-			tmdc->mode[j] = data[j][TMDC_BYTE_ID];
-
-			for (m = 0; models[m].id && models[m].id != tmdc->mode[j]; m++);
-
-			tmdc->abs[j] = models[m].axes;
-			tmdc->btn[j] = models[m].buttons;
-
-			if (!models[m].id) {
-				models[m].abs = data[j][TMDC_BYTE_DEF] >> 4;
-				for (k = 0; k < 4; k++)
-					models[m].btnc[k] = k < (data[j][TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
-			}
-
-			tmdc->absc[j] = models[m].abs;
-			for (k = 0; k < 4; k++) {
-				tmdc->btnc[j][k] = models[m].btnc[k];
-				tmdc->btno[j][k] = models[m].btno[k];
-			}
-
-			sprintf(tmdc->name[j], models[m].name, models[m].abs,
-				(data[j][TMDC_BYTE_DEF] & 0xf) << 3, tmdc->mode[j]);
-
-			sprintf(tmdc->phys[j], "%s/input%d", gameport->phys, j);
-
-			tmdc->dev[j].private = tmdc;
-			tmdc->dev[j].open = tmdc_open;
-			tmdc->dev[j].close = tmdc_close;
-
-			tmdc->dev[j].name = tmdc->name[j];
-			tmdc->dev[j].phys = tmdc->phys[j];
-			tmdc->dev[j].id.bustype = BUS_GAMEPORT;
-			tmdc->dev[j].id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
-			tmdc->dev[j].id.product = models[m].id;
-			tmdc->dev[j].id.version = 0x0100;
-
-			tmdc->dev[j].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
-
-			for (i = 0; i < models[m].abs && i < TMDC_ABS; i++)
-				if (tmdc->abs[j][i] >= 0)
-					input_set_abs_params(&tmdc->dev[j], tmdc->abs[j][i], 8, 248, 2, 4);
-
-			for (i = 0; i < models[m].hats && i < TMDC_ABS_HAT; i++)
-				input_set_abs_params(&tmdc->dev[j], tmdc_abs_hat[i], -1, 1, 0, 0);
-
-
-			for (k = l = 0; k < 4; k++) {
-				for (i = 0; i < models[m].btnc[k] && i < TMDC_BTN; i++)
-					set_bit(tmdc->btn[j][i + l], tmdc->dev[j].keybit);
-				l += models[m].btnc[k];
-			}
-
-			input_register_device(tmdc->dev + j);
-			printk(KERN_INFO "input: %s on %s\n", tmdc->name[j], gameport->phys);
+			err = tmdc_setup_port(tmdc, i, data[i]);
+			if (err)
+				goto fail3;
 		}
+	}
 
 	return 0;
 
-fail2:	gameport_close(gameport);
-fail1:	gameport_set_drvdata(gameport, NULL);
+ fail3: while (--i >= 0) {
+		if (tmdc->port[i]) {
+			input_unregister_device(tmdc->port[i]->dev);
+			kfree(tmdc->port[i]);
+		}
+	}
+ fail2:	gameport_close(gameport);
+ fail1:	gameport_set_drvdata(gameport, NULL);
 	kfree(tmdc);
 	return err;
 }
@@ -352,9 +409,12 @@ static void tmdc_disconnect(struct gameport *gameport)
 	struct tmdc *tmdc = gameport_get_drvdata(gameport);
 	int i;
 
-	for (i = 0; i < 2; i++)
-		if (tmdc->exists & (1 << i))
-			input_unregister_device(tmdc->dev + i);
+	for (i = 0; i < 2; i++) {
+		if (tmdc->port[i]) {
+			input_unregister_device(tmdc->port[i]->dev);
+			kfree(tmdc->port[i]);
+		}
+	}
 	gameport_close(gameport);
 	gameport_set_drvdata(gameport, NULL);
 	kfree(tmdc);