[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>
diff --git a/drivers/input/joystick/turbografx.c b/drivers/input/joystick/turbografx.c
index 0c5b9c8..7e97649 100644
--- a/drivers/input/joystick/turbografx.c
+++ b/drivers/input/joystick/turbografx.c
@@ -42,19 +42,21 @@
MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
MODULE_LICENSE("GPL");
-static int tgfx[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
-static int tgfx_nargs __initdata = 0;
-module_param_array_named(map, tgfx, int, &tgfx_nargs, 0);
+#define TGFX_MAX_PORTS 3
+#define TGFX_MAX_DEVICES 7
+
+struct tgfx_config {
+ int args[TGFX_MAX_DEVICES + 1];
+ int nargs;
+};
+
+static struct tgfx_config tgfx[TGFX_MAX_PORTS] __initdata;
+
+module_param_array_named(map, tgfx[0].args, int, &tgfx[0].nargs, 0);
MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
-
-static int tgfx_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
-static int tgfx_nargs_2 __initdata = 0;
-module_param_array_named(map2, tgfx_2, int, &tgfx_nargs_2, 0);
+module_param_array_named(map2, tgfx[1].args, int, &tgfx[1].nargs, 0);
MODULE_PARM_DESC(map2, "Describes second set of devices");
-
-static int tgfx_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
-static int tgfx_nargs_3 __initdata = 0;
-module_param_array_named(map3, tgfx_3, int, &tgfx_nargs_3, 0);
+module_param_array_named(map3, tgfx[2].args, int, &tgfx[2].nargs, 0);
MODULE_PARM_DESC(map3, "Describes third set of devices");
__obsolete_setup("tgfx=");
@@ -75,17 +77,17 @@
#define TGFX_TOP2 0x08
static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };
-static char *tgfx_name = "TurboGraFX Multisystem joystick";
static struct tgfx {
struct pardevice *pd;
struct timer_list timer;
- struct input_dev dev[7];
- char phys[7][32];
+ struct input_dev *dev[TGFX_MAX_DEVICES];
+ char name[TGFX_MAX_DEVICES][64];
+ char phys[TGFX_MAX_DEVICES][32];
int sticks;
int used;
struct semaphore sem;
-} *tgfx_base[3];
+} *tgfx_base[TGFX_MAX_PORTS];
/*
* tgfx_timer() reads and analyzes TurboGraFX joystick data.
@@ -100,7 +102,7 @@
for (i = 0; i < 7; i++)
if (tgfx->sticks & (1 << i)) {
- dev = tgfx->dev + i;
+ dev = tgfx->dev[i];
parport_write_data(tgfx->pd->port, ~(1 << i));
data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
@@ -153,118 +155,165 @@
up(&tgfx->sem);
}
+
+
/*
* tgfx_probe() probes for tg gamepads.
*/
-static struct tgfx __init *tgfx_probe(int *config, int nargs)
+static struct tgfx __init *tgfx_probe(int parport, int *n_buttons, int n_devs)
{
struct tgfx *tgfx;
+ struct input_dev *input_dev;
struct parport *pp;
+ struct pardevice *pd;
int i, j;
+ int err;
- if (config[0] < 0)
- return NULL;
-
- if (nargs < 2) {
- printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
- return NULL;
- }
-
- pp = parport_find_number(config[0]);
-
+ pp = parport_find_number(parport);
if (!pp) {
printk(KERN_ERR "turbografx.c: no such parport\n");
- return NULL;
+ err = -EINVAL;
+ goto err_out;
}
- if (!(tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL))) {
- parport_put_port(pp);
- return NULL;
+ pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
+ if (!pd) {
+ printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n");
+ err = -EBUSY;
+ goto err_put_pp;
+ }
+
+ tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL);
+ if (!tgfx) {
+ printk(KERN_ERR "turbografx.c: Not enough memory\n");
+ err = -ENOMEM;
+ goto err_unreg_pardev;
}
init_MUTEX(&tgfx->sem);
-
- tgfx->pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
-
- parport_put_port(pp);
-
- if (!tgfx->pd) {
- printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n");
- kfree(tgfx);
- return NULL;
- }
-
+ tgfx->pd = pd;
init_timer(&tgfx->timer);
tgfx->timer.data = (long) tgfx;
tgfx->timer.function = tgfx_timer;
- tgfx->sticks = 0;
+ for (i = 0; i < n_devs; i++) {
+ if (n_buttons[i] < 1)
+ continue;
- for (i = 0; i < nargs - 1; i++)
- if (config[i+1] > 0 && config[i+1] < 6) {
-
- tgfx->sticks |= (1 << i);
-
- tgfx->dev[i].private = tgfx;
- tgfx->dev[i].open = tgfx_open;
- tgfx->dev[i].close = tgfx_close;
-
- sprintf(tgfx->phys[i], "%s/input0", tgfx->pd->port->name);
-
- tgfx->dev[i].name = tgfx_name;
- tgfx->dev[i].phys = tgfx->phys[i];
- tgfx->dev[i].id.bustype = BUS_PARPORT;
- tgfx->dev[i].id.vendor = 0x0003;
- tgfx->dev[i].id.product = config[i+1];
- tgfx->dev[i].id.version = 0x0100;
-
- tgfx->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- tgfx->dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
-
- for (j = 0; j < config[i+1]; j++)
- set_bit(tgfx_buttons[j], tgfx->dev[i].keybit);
-
- tgfx->dev[i].absmin[ABS_X] = -1; tgfx->dev[i].absmax[ABS_X] = 1;
- tgfx->dev[i].absmin[ABS_Y] = -1; tgfx->dev[i].absmax[ABS_Y] = 1;
-
- input_register_device(tgfx->dev + i);
- printk(KERN_INFO "input: %d-button Multisystem joystick on %s\n",
- config[i+1], tgfx->pd->port->name);
+ if (n_buttons[i] > 6) {
+ printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]);
+ err = -EINVAL;
+ goto err_free_devs;
}
+ tgfx->dev[i] = input_dev = input_allocate_device();
+ if (!input_dev) {
+ printk(KERN_ERR "turbografx.c: Not enough memory for input device\n");
+ err = -ENOMEM;
+ goto err_free_devs;
+ }
+
+ tgfx->sticks |= (1 << i);
+ snprintf(tgfx->name[i], sizeof(tgfx->name[i]),
+ "TurboGraFX %d-button Multisystem joystick", n_buttons[i]);
+ snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]),
+ "%s/input%d", tgfx->pd->port->name, i);
+
+ input_dev->name = tgfx->name[i];
+ input_dev->phys = tgfx->phys[i];
+ input_dev->id.bustype = BUS_PARPORT;
+ input_dev->id.vendor = 0x0003;
+ input_dev->id.product = n_buttons[i];
+ input_dev->id.version = 0x0100;
+
+ input_dev->private = tgfx;
+ input_dev->open = tgfx_open;
+ input_dev->close = tgfx_close;
+
+ input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0);
+
+ for (j = 0; j < n_buttons[i]; j++)
+ set_bit(tgfx_buttons[j], input_dev->keybit);
+
+ input_register_device(tgfx->dev[i]);
+ }
+
if (!tgfx->sticks) {
- parport_unregister_device(tgfx->pd);
- kfree(tgfx);
- return NULL;
+ printk(KERN_ERR "turbografx.c: No valid devices specified\n");
+ err = -EINVAL;
+ goto err_free_tgfx;
}
return tgfx;
+
+ err_free_devs:
+ while (--i >= 0)
+ input_unregister_device(tgfx->dev[i]);
+ err_free_tgfx:
+ kfree(tgfx);
+ err_unreg_pardev:
+ parport_unregister_device(pd);
+ err_put_pp:
+ parport_put_port(pp);
+ err_out:
+ return ERR_PTR(err);
+}
+
+static void __exit tgfx_remove(struct tgfx *tgfx)
+{
+ int i;
+
+ for (i = 0; i < TGFX_MAX_DEVICES; i++)
+ if (tgfx->dev[i])
+ input_unregister_device(tgfx->dev[i]);
+ parport_unregister_device(tgfx->pd);
+ kfree(tgfx);
}
static int __init tgfx_init(void)
{
- tgfx_base[0] = tgfx_probe(tgfx, tgfx_nargs);
- tgfx_base[1] = tgfx_probe(tgfx_2, tgfx_nargs_2);
- tgfx_base[2] = tgfx_probe(tgfx_3, tgfx_nargs_3);
+ int i;
+ int have_dev = 0;
+ int err = 0;
- if (tgfx_base[0] || tgfx_base[1] || tgfx_base[2])
- return 0;
+ for (i = 0; i < TGFX_MAX_PORTS; i++) {
+ if (tgfx[i].nargs == 0 || tgfx[i].args[0] < 0)
+ continue;
- return -ENODEV;
+ if (tgfx[i].nargs < 2) {
+ printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
+ err = -EINVAL;
+ break;
+ }
+
+ tgfx_base[i] = tgfx_probe(tgfx[i].args[0], tgfx[i].args + 1, tgfx[i].nargs - 1);
+ if (IS_ERR(tgfx_base[i])) {
+ err = PTR_ERR(tgfx_base[i]);
+ break;
+ }
+
+ have_dev = 1;
+ }
+
+ if (err) {
+ while (--i >= 0)
+ tgfx_remove(tgfx_base[i]);
+ return err;
+ }
+
+ return have_dev ? 0 : -ENODEV;
}
static void __exit tgfx_exit(void)
{
- int i, j;
+ int i;
- for (i = 0; i < 3; i++)
- if (tgfx_base[i]) {
- for (j = 0; j < 7; j++)
- if (tgfx_base[i]->sticks & (1 << j))
- input_unregister_device(tgfx_base[i]->dev + j);
- parport_unregister_device(tgfx_base[i]->pd);
- }
+ for (i = 0; i < TGFX_MAX_PORTS; i++)
+ if (tgfx_base[i])
+ tgfx_remove(tgfx_base[i]);
}
module_init(tgfx_init);