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Input: ati_remote2 - add per device attrs 

Add per device channel_mask and mode_mask attributes. They inherit
the values from the module parameters when the device is registered.
One additional benefit is that now runtime changes to channel_mask
can actually affect the hardware channel setup like they should.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Ville Syrjala 2009-01-29 23:42:16 -08:00 committed by Dmitry Torokhov
parent 169bc1efa8
commit d329e33c7c
1 changed files with 126 additions and 15 deletions
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141
drivers/input/misc/ati_remote2.c
View File

@ -31,11 +31,16 @@ MODULE_LICENSE("GPL");
* newly configured "channel".
*/
static unsigned int channel_mask = 0xFFFF;
enum {
ATI_REMOTE2_MAX_CHANNEL_MASK = 0xFFFF,
ATI_REMOTE2_MAX_MODE_MASK = 0x1F,
};
static unsigned int channel_mask = ATI_REMOTE2_MAX_CHANNEL_MASK;
module_param(channel_mask, uint, 0644);
MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>");
static unsigned int mode_mask = 0x1F;
static unsigned int mode_mask = ATI_REMOTE2_MAX_MODE_MASK;
module_param(mode_mask, uint, 0644);
MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
@ -133,6 +138,9 @@ struct ati_remote2 {
u16 keycode[ATI_REMOTE2_MODES][ARRAY_SIZE(ati_remote2_key_table)];
unsigned int flags;
unsigned int channel_mask;
unsigned int mode_mask;
};
static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
@ -244,7 +252,7 @@ static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
channel = data[0] >> 4;
if (!((1 << channel) & channel_mask))
if (!((1 << channel) & ar2->channel_mask))
return;
mode = data[0] & 0x0F;
@ -256,7 +264,7 @@ static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
return;
}
if (!((1 << mode) & mode_mask))
if (!((1 << mode) & ar2->mode_mask))
return;
input_event(idev, EV_REL, REL_X, (s8) data[1]);
@ -283,7 +291,7 @@ static void ati_remote2_input_key(struct ati_remote2 *ar2)
channel = data[0] >> 4;
if (!((1 << channel) & channel_mask))
if (!((1 << channel) & ar2->channel_mask))
return;
mode = data[0] & 0x0F;
@ -311,7 +319,7 @@ static void ati_remote2_input_key(struct ati_remote2 *ar2)
ar2->mode = mode;
}
if (!((1 << mode) & mode_mask))
if (!((1 << mode) & ar2->mode_mask))
return;
index = ati_remote2_lookup(hw_code);
@ -416,7 +424,7 @@ static int ati_remote2_getkeycode(struct input_dev *idev,
int index, mode;
mode = scancode >> 8;
if (mode > ATI_REMOTE2_PC || !((1 << mode) & mode_mask))
if (mode > ATI_REMOTE2_PC || !((1 << mode) & ar2->mode_mask))
return -EINVAL;
index = ati_remote2_lookup(scancode & 0xFF);
@ -433,7 +441,7 @@ static int ati_remote2_setkeycode(struct input_dev *idev, int scancode, int keyc
int index, mode, old_keycode;
mode = scancode >> 8;
if (mode > ATI_REMOTE2_PC || !((1 << mode) & mode_mask))
if (mode > ATI_REMOTE2_PC || !((1 << mode) & ar2->mode_mask))
return -EINVAL;
index = ati_remote2_lookup(scancode & 0xFF);
@ -556,7 +564,7 @@ static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
}
}
static int ati_remote2_setup(struct ati_remote2 *ar2)
static int ati_remote2_setup(struct ati_remote2 *ar2, unsigned int ch_mask)
{
int r, i, channel;
@ -571,8 +579,8 @@ static int ati_remote2_setup(struct ati_remote2 *ar2)
channel = 0;
for (i = 0; i < 16; i++) {
if ((1 << i) & channel_mask) {
if (!(~(1 << i) & 0xFFFF & channel_mask))
if ((1 << i) & ch_mask) {
if (!(~(1 << i) & ch_mask))
channel = i + 1;
break;
}
@ -591,6 +599,99 @@ static int ati_remote2_setup(struct ati_remote2 *ar2)
return 0;
}
static ssize_t ati_remote2_show_channel_mask(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct usb_device *udev = to_usb_device(dev);
struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
struct ati_remote2 *ar2 = usb_get_intfdata(intf);
return sprintf(buf, "0x%04x\n", ar2->channel_mask);
}
static ssize_t ati_remote2_store_channel_mask(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
struct ati_remote2 *ar2 = usb_get_intfdata(intf);
unsigned long mask;
int r;
if (strict_strtoul(buf, 0, &mask))
return -EINVAL;
if (mask & ~ATI_REMOTE2_MAX_CHANNEL_MASK)
return -EINVAL;
r = usb_autopm_get_interface(ar2->intf[0]);
if (r) {
dev_err(&ar2->intf[0]->dev,
"%s(): usb_autopm_get_interface() = %d\n", __func__, r);
return r;
}
mutex_lock(&ati_remote2_mutex);
if (mask != ar2->channel_mask && !ati_remote2_setup(ar2, mask))
ar2->channel_mask = mask;
mutex_unlock(&ati_remote2_mutex);
usb_autopm_put_interface(ar2->intf[0]);
return count;
}
static ssize_t ati_remote2_show_mode_mask(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct usb_device *udev = to_usb_device(dev);
struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
struct ati_remote2 *ar2 = usb_get_intfdata(intf);
return sprintf(buf, "0x%02x\n", ar2->mode_mask);
}
static ssize_t ati_remote2_store_mode_mask(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
struct ati_remote2 *ar2 = usb_get_intfdata(intf);
unsigned long mask;
if (strict_strtoul(buf, 0, &mask))
return -EINVAL;
if (mask & ~ATI_REMOTE2_MAX_MODE_MASK)
return -EINVAL;
ar2->mode_mask = mask;
return count;
}
static DEVICE_ATTR(channel_mask, 0644, ati_remote2_show_channel_mask,
ati_remote2_store_channel_mask);
static DEVICE_ATTR(mode_mask, 0644, ati_remote2_show_mode_mask,
ati_remote2_store_mode_mask);
static struct attribute *ati_remote2_attrs[] = {
&dev_attr_channel_mask.attr,
&dev_attr_mode_mask.attr,
NULL,
};
static struct attribute_group ati_remote2_attr_group = {
.attrs = ati_remote2_attrs,
};
static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(interface);
@ -621,7 +722,10 @@ static int ati_remote2_probe(struct usb_interface *interface, const struct usb_d
if (r)
goto fail2;
r = ati_remote2_setup(ar2);
ar2->channel_mask = channel_mask & ATI_REMOTE2_MAX_CHANNEL_MASK;
ar2->mode_mask = mode_mask & ATI_REMOTE2_MAX_MODE_MASK;
r = ati_remote2_setup(ar2, ar2->channel_mask);
if (r)
goto fail2;
@ -630,19 +734,24 @@ static int ati_remote2_probe(struct usb_interface *interface, const struct usb_d
strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
r = ati_remote2_input_init(ar2);
r = sysfs_create_group(&udev->dev.kobj, &ati_remote2_attr_group);
if (r)
goto fail2;
r = ati_remote2_input_init(ar2);
if (r)
goto fail3;
usb_set_intfdata(interface, ar2);
interface->needs_remote_wakeup = 1;
return 0;
fail3:
sysfs_remove_group(&udev->dev.kobj, &ati_remote2_attr_group);
fail2:
ati_remote2_urb_cleanup(ar2);
usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
fail1:
kfree(ar2);
@ -663,6 +772,8 @@ static void ati_remote2_disconnect(struct usb_interface *interface)
input_unregister_device(ar2->idev);
sysfs_remove_group(&ar2->udev->dev.kobj, &ati_remote2_attr_group);
ati_remote2_urb_cleanup(ar2);
usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
@ -736,7 +847,7 @@ static int ati_remote2_reset_resume(struct usb_interface *interface)
mutex_lock(&ati_remote2_mutex);
r = ati_remote2_setup(ar2);
r = ati_remote2_setup(ar2, ar2->channel_mask);
if (r)
goto out;