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V4L/DVB: ir-core: Add support for disabling all protocols

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Writing "none" to /dev/class/rc/rc*/protocols will disable all protocols.
This allows an easier setup, from userspace, as userspace applications don't
need to disable protocol per protocol, before enabling a different set of
protocols.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2010-06-28 12:58:48 -03:00
parent a9e55ea977
commit 5f1247972e
1 changed files with 18 additions and 9 deletions
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27
drivers/media/IR/ir-sysfs.c
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@ -45,6 +45,8 @@ static struct {
{ IR_TYPE_SONY, "sony" },
};
#define PROTO_NONE "none"
/**
* show_protocols() - shows the current IR protocol(s)
* @d: the device descriptor
@ -101,6 +103,7 @@ static ssize_t show_protocols(struct device *d,
* Writing "+proto" will add a protocol to the list of enabled protocols.
* Writing "-proto" will remove a protocol from the list of enabled protocols.
* Writing "proto" will enable only "proto".
* Writing "none" will disable all protocols.
* Returns -EINVAL if an invalid protocol combination or unknown protocol name
* is used, otherwise @len.
*/
@ -134,16 +137,22 @@ static ssize_t store_protocols(struct device *d,
disable = false;
}
for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) {
tmp += strlen(proto_names[i].name);
mask = proto_names[i].type;
break;
if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) {
mask = 0;
tmp += sizeof(PROTO_NONE);
} else {
for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) {
tmp += strlen(proto_names[i].name);
mask = proto_names[i].type;
break;
}
}
if (i == ARRAY_SIZE(proto_names)) {
IR_dprintk(1, "Unknown protocol\n");
return -EINVAL;
}
}
if (i == ARRAY_SIZE(proto_names)) {
IR_dprintk(1, "Unknown protocol\n");
return -EINVAL;
}
tmp = skip_spaces(tmp);