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Input: gamecon - use parallel port device model 

Modify gamecon driver to use the new Parallel Port device model.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Sudip Mukherjee 2015-09-29 16:03:43 -07:00 committed by Dmitry Torokhov
parent 379d7cfa9b
commit a517e87c3d
1 changed files with 53 additions and 47 deletions
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100
drivers/input/joystick/gamecon.c
View File

@ -53,7 +53,7 @@ struct gc_config {
unsigned int nargs;
};
static struct gc_config gc_cfg[GC_MAX_PORTS] __initdata;
static struct gc_config gc_cfg[GC_MAX_PORTS];
module_param_array_named(map, gc_cfg[0].args, int, &gc_cfg[0].nargs, 0);
MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)");
@ -92,6 +92,7 @@ struct gc {
struct timer_list timer;
int pad_count[GC_MAX];
int used;
int parportno;
struct mutex mutex;
};
@ -304,7 +305,7 @@ static int gc_n64_play_effect(struct input_dev *dev, void *data,
return 0;
}
static int __init gc_n64_init_ff(struct input_dev *dev, int i)
static int gc_n64_init_ff(struct input_dev *dev, int i)
{
struct gc_subdev *sdev;
int err;
@ -811,7 +812,7 @@ static void gc_close(struct input_dev *dev)
mutex_unlock(&gc->mutex);
}
static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type)
static int gc_setup_pad(struct gc *gc, int idx, int pad_type)
{
struct gc_pad *pad = &gc->pads[idx];
struct input_dev *input_dev;
@ -926,46 +927,54 @@ err_free_dev:
return err;
}
static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
static void gc_attach(struct parport *pp)
{
struct gc *gc;
struct parport *pp;
struct pardevice *pd;
int i;
int count = 0;
int err;
int *pads, n_pads;
struct pardev_cb gc_parport_cb;
pp = parport_find_number(parport);
if (!pp) {
pr_err("no such parport %d\n", parport);
err = -EINVAL;
goto err_out;
for (i = 0; i < GC_MAX_PORTS; i++) {
if (gc_cfg[i].nargs == 0 || gc_cfg[i].args[0] < 0)
continue;
if (gc_cfg[i].args[0] == pp->number)
break;
}
pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
if (i == GC_MAX_PORTS) {
pr_debug("Not using parport%d.\n", pp->number);
return;
}
pads = gc_cfg[i].args + 1;
n_pads = gc_cfg[i].nargs - 1;
gc_parport_cb.flags = PARPORT_FLAG_EXCL;
pd = parport_register_dev_model(pp, "gamecon", &gc_parport_cb, i);
if (!pd) {
pr_err("parport busy already - lp.o loaded?\n");
err = -EBUSY;
goto err_put_pp;
return;
}
gc = kzalloc(sizeof(struct gc), GFP_KERNEL);
if (!gc) {
pr_err("Not enough memory\n");
err = -ENOMEM;
goto err_unreg_pardev;
}
mutex_init(&gc->mutex);
gc->pd = pd;
gc->parportno = pp->number;
setup_timer(&gc->timer, gc_timer, (long) gc);
for (i = 0; i < n_pads && i < GC_MAX_DEVICES; i++) {
if (!pads[i])
continue;
err = gc_setup_pad(gc, i, pads[i]);
if (err)
if (gc_setup_pad(gc, i, pads[i]))
goto err_unreg_devs;
count++;
@ -973,12 +982,11 @@ static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
if (count == 0) {
pr_err("No valid devices specified\n");
err = -EINVAL;
goto err_free_gc;
}
parport_put_port(pp);
return gc;
gc_base[i] = gc;
return;
err_unreg_devs:
while (--i >= 0)
@ -988,15 +996,23 @@ static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
kfree(gc);
err_unreg_pardev:
parport_unregister_device(pd);
err_put_pp:
parport_put_port(pp);
err_out:
return ERR_PTR(err);
}
static void gc_remove(struct gc *gc)
static void gc_detach(struct parport *port)
{
int i;
struct gc *gc;
for (i = 0; i < GC_MAX_PORTS; i++) {
if (gc_base[i] && gc_base[i]->parportno == port->number)
break;
}
if (i == GC_MAX_PORTS)
return;
gc = gc_base[i];
gc_base[i] = NULL;
for (i = 0; i < GC_MAX_DEVICES; i++)
if (gc->pads[i].dev)
@ -1005,11 +1021,17 @@ static void gc_remove(struct gc *gc)
kfree(gc);
}
static struct parport_driver gc_parport_driver = {
.name = "gamecon",
.match_port = gc_attach,
.detach = gc_detach,
.devmodel = true,
};
static int __init gc_init(void)
{
int i;
int have_dev = 0;
int err = 0;
for (i = 0; i < GC_MAX_PORTS; i++) {
if (gc_cfg[i].nargs == 0 || gc_cfg[i].args[0] < 0)
@ -1017,37 +1039,21 @@ static int __init gc_init(void)
if (gc_cfg[i].nargs < 2) {
pr_err("at least one device must be specified\n");
err = -EINVAL;
break;
}
gc_base[i] = gc_probe(gc_cfg[i].args[0],
gc_cfg[i].args + 1, gc_cfg[i].nargs - 1);
if (IS_ERR(gc_base[i])) {
err = PTR_ERR(gc_base[i]);
break;
return -EINVAL;
}
have_dev = 1;
}
if (err) {
while (--i >= 0)
if (gc_base[i])
gc_remove(gc_base[i]);
return err;
}
if (!have_dev)
return -ENODEV;
return have_dev ? 0 : -ENODEV;
return parport_register_driver(&gc_parport_driver);
}
static void __exit gc_exit(void)
{
int i;
for (i = 0; i < GC_MAX_PORTS; i++)
if (gc_base[i])
gc_remove(gc_base[i]);
parport_unregister_driver(&gc_parport_driver);
}
module_init(gc_init);