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V4L/DVB (13638): ir-core: documment missed functions

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While here, change ir_core_dev_number to be static

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2009-12-14 02:55:03 -03:00
parent 950b0f5a0b
commit d4b778d368
2 changed files with 56 additions and 7 deletions
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13
drivers/media/IR/ir-keytable.c
View File

@ -402,9 +402,10 @@ EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
* @input_dev: the struct input_dev descriptor of the device
* @rc_tab: the struct ir_scancode_table table of scancode/keymap
*
* This routine is used to initialize the input infrastructure to work with
* an IR.
* It should be called before registering the IR device.
* This routine is used to initialize the input infrastructure
* to work with an IR.
* It will register the input/evdev interface for the device and
* register the syfs code for IR class
*/
int ir_input_register(struct input_dev *input_dev,
const struct ir_scancode_table *rc_tab,
@ -471,6 +472,12 @@ int ir_input_register(struct input_dev *input_dev,
}
EXPORT_SYMBOL_GPL(ir_input_register);
/**
* ir_input_unregister() - unregisters IR and frees resources
* @input_dev: the struct input_dev descriptor of the device
* This routine is used to free memory and de-register interfaces.
*/
void ir_input_unregister(struct input_dev *dev)
{
struct ir_input_dev *ir_dev = input_get_drvdata(dev);

50
drivers/media/IR/ir-sysfs.c
View File

@ -18,11 +18,22 @@
#define IRRCV_NUM_DEVICES 256
unsigned long ir_core_dev_number;
/* bit array to represent IR sysfs device number */
static unsigned long ir_core_dev_number;
/* class for /sys/class/irrcv */
static struct class *ir_input_class;
/**
* show_protocol() - shows the current IR protocol
* @d: the device descriptor
* @mattr: the device attribute struct (unused)
* @buf: a pointer to the output buffer
*
* This routine is a callback routine for input read the IR protocol type.
* it is trigged by reading /sys/class/irrcv/irrcv?/current_protocol.
* It returns the protocol name, as understood by the driver.
*/
static ssize_t show_protocol(struct device *d,
struct device_attribute *mattr, char *buf)
{
@ -47,7 +58,19 @@ static ssize_t show_protocol(struct device *d,
return sprintf(buf, "%s\n", s);
}
/**
* store_protocol() - shows the current IR protocol
* @d: the device descriptor
* @mattr: the device attribute struct (unused)
* @buf: a pointer to the input buffer
* @len: length of the input buffer
*
* This routine is a callback routine for changing the IR protocol type.
* it is trigged by reading /sys/class/irrcv/irrcv?/current_protocol.
* It changes the IR the protocol name, if the IR type is recognized
* by the driver.
* If an unknown protocol name is used, returns -EINVAL.
*/
static ssize_t store_protocol(struct device *d,
struct device_attribute *mattr,
const char *data,
@ -88,7 +111,9 @@ static ssize_t store_protocol(struct device *d,
return len;
}
/*
* Static device attribute struct with the sysfs attributes for IR's
*/
static DEVICE_ATTR(current_protocol, S_IRUGO | S_IWUSR,
show_protocol, store_protocol);
@ -96,6 +121,12 @@ static struct attribute *ir_dev_attrs[] = {
&dev_attr_current_protocol.attr,
};
/**
* ir_register_class() - creates the sysfs for /sys/class/irrcv/irrcv?
* @input_dev: the struct input_dev descriptor of the device
*
* This routine is used to register the syfs code for IR class
*/
int ir_register_class(struct input_dev *input_dev)
{
int rc;
@ -127,6 +158,13 @@ int ir_register_class(struct input_dev *input_dev)
return 0;
};
/**
* ir_unregister_class() - removes the sysfs for sysfs for
* /sys/class/irrcv/irrcv?
* @input_dev: the struct input_dev descriptor of the device
*
* This routine is used to unregister the syfs code for IR class
*/
void ir_unregister_class(struct input_dev *input_dev)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
@ -142,6 +180,10 @@ void ir_unregister_class(struct input_dev *input_dev)
kfree(ir_dev->attr.name);
}
/*
* Init/exit code for the module. Basically, creates/removes /sys/class/irrcv
*/
static int __init ir_core_init(void)
{
ir_input_class = class_create(THIS_MODULE, "irrcv");