diff options
Diffstat (limited to 'drivers/media/IR/ir-sysfs.c')
| -rw-r--r-- | drivers/media/IR/ir-sysfs.c | 303 |
1 files changed, 0 insertions, 303 deletions
diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c deleted file mode 100644 index 2098dd1488e..00000000000 --- a/drivers/media/IR/ir-sysfs.c +++ /dev/null @@ -1,303 +0,0 @@ -/* ir-sysfs.c - sysfs interface for RC devices (/sys/class/rc) - * - * Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/slab.h> -#include <linux/input.h> -#include <linux/device.h> -#include "ir-core-priv.h" - -#define IRRCV_NUM_DEVICES 256 - -/* bit array to represent IR sysfs device number */ -static unsigned long ir_core_dev_number; - -/* class for /sys/class/rc */ -static char *ir_devnode(struct device *dev, mode_t *mode) -{ - return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev)); -} - -static struct class ir_input_class = { - .name = "rc", - .devnode = ir_devnode, -}; - -/** - * 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/rc/rc?/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) -{ - char *s; - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - u64 ir_type = ir_dev->rc_tab.ir_type; - - IR_dprintk(1, "Current protocol is %lld\n", (long long)ir_type); - - /* FIXME: doesn't support multiple protocols at the same time */ - if (ir_type == IR_TYPE_UNKNOWN) - s = "Unknown"; - else if (ir_type == IR_TYPE_RC5) - s = "rc-5"; - else if (ir_type == IR_TYPE_NEC) - s = "nec"; - else if (ir_type == IR_TYPE_RC6) - s = "rc6"; - else if (ir_type == IR_TYPE_JVC) - s = "jvc"; - else if (ir_type == IR_TYPE_SONY) - s = "sony"; - else - s = "other"; - - 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/rc/rc?/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, - size_t len) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - u64 ir_type = 0; - int rc = -EINVAL; - unsigned long flags; - char *buf; - - while ((buf = strsep((char **) &data, " \n")) != NULL) { - if (!strcasecmp(buf, "rc-5") || !strcasecmp(buf, "rc5")) - ir_type |= IR_TYPE_RC5; - if (!strcasecmp(buf, "nec")) - ir_type |= IR_TYPE_NEC; - if (!strcasecmp(buf, "jvc")) - ir_type |= IR_TYPE_JVC; - if (!strcasecmp(buf, "sony")) - ir_type |= IR_TYPE_SONY; - } - - if (!ir_type) { - IR_dprintk(1, "Unknown protocol\n"); - return -EINVAL; - } - - if (ir_dev->props && ir_dev->props->change_protocol) - rc = ir_dev->props->change_protocol(ir_dev->props->priv, - ir_type); - - if (rc < 0) { - IR_dprintk(1, "Error setting protocol to %lld\n", - (long long)ir_type); - return -EINVAL; - } - - spin_lock_irqsave(&ir_dev->rc_tab.lock, flags); - ir_dev->rc_tab.ir_type = ir_type; - spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags); - - IR_dprintk(1, "Current protocol(s) is(are) %lld\n", - (long long)ir_type); - - return len; -} - -static ssize_t show_supported_protocols(struct device *d, - struct device_attribute *mattr, char *buf) -{ - char *orgbuf = buf; - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - - /* FIXME: doesn't support multiple protocols at the same time */ - if (ir_dev->props->allowed_protos == IR_TYPE_UNKNOWN) - buf += sprintf(buf, "unknown "); - if (ir_dev->props->allowed_protos & IR_TYPE_RC5) - buf += sprintf(buf, "rc-5 "); - if (ir_dev->props->allowed_protos & IR_TYPE_NEC) - buf += sprintf(buf, "nec "); - if (buf == orgbuf) - buf += sprintf(buf, "other "); - - buf += sprintf(buf - 1, "\n"); - - return buf - orgbuf; -} - -#define ADD_HOTPLUG_VAR(fmt, val...) \ - do { \ - int err = add_uevent_var(env, fmt, val); \ - if (err) \ - return err; \ - } while (0) - -static int ir_dev_uevent(struct device *device, struct kobj_uevent_env *env) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(device); - - if (ir_dev->rc_tab.name) - ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name); - if (ir_dev->driver_name) - ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name); - - return 0; -} - -/* - * Static device attribute struct with the sysfs attributes for IR's - */ -static DEVICE_ATTR(protocol, S_IRUGO | S_IWUSR, - show_protocol, store_protocol); - -static DEVICE_ATTR(supported_protocols, S_IRUGO | S_IWUSR, - show_supported_protocols, NULL); - -static struct attribute *ir_hw_dev_attrs[] = { - &dev_attr_protocol.attr, - &dev_attr_supported_protocols.attr, - NULL, -}; - -static struct attribute_group ir_hw_dev_attr_grp = { - .attrs = ir_hw_dev_attrs, -}; - -static const struct attribute_group *ir_hw_dev_attr_groups[] = { - &ir_hw_dev_attr_grp, - NULL -}; - -static struct device_type rc_dev_type = { - .groups = ir_hw_dev_attr_groups, - .uevent = ir_dev_uevent, -}; - -static struct device_type ir_raw_dev_type = { - .uevent = ir_dev_uevent, -}; - -/** - * ir_register_class() - creates the sysfs for /sys/class/rc/rc? - * @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; - const char *path; - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - int devno = find_first_zero_bit(&ir_core_dev_number, - IRRCV_NUM_DEVICES); - - if (unlikely(devno < 0)) - return devno; - - if (ir_dev->props) { - if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) - ir_dev->dev.type = &rc_dev_type; - } else - ir_dev->dev.type = &ir_raw_dev_type; - - ir_dev->dev.class = &ir_input_class; - ir_dev->dev.parent = input_dev->dev.parent; - dev_set_name(&ir_dev->dev, "rc%d", devno); - dev_set_drvdata(&ir_dev->dev, ir_dev); - rc = device_register(&ir_dev->dev); - if (rc) - return rc; - - - input_dev->dev.parent = &ir_dev->dev; - rc = input_register_device(input_dev); - if (rc < 0) { - device_del(&ir_dev->dev); - return rc; - } - - __module_get(THIS_MODULE); - - path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL); - printk(KERN_INFO "%s: %s as %s\n", - dev_name(&ir_dev->dev), - input_dev->name ? input_dev->name : "Unspecified device", - path ? path : "N/A"); - kfree(path); - - ir_dev->devno = devno; - set_bit(devno, &ir_core_dev_number); - - return 0; -}; - -/** - * ir_unregister_class() - removes the sysfs for sysfs for - * /sys/class/rc/rc? - * @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); - - clear_bit(ir_dev->devno, &ir_core_dev_number); - input_unregister_device(input_dev); - device_del(&ir_dev->dev); - - module_put(THIS_MODULE); -} - -/* - * Init/exit code for the module. Basically, creates/removes /sys/class/rc - */ - -static int __init ir_core_init(void) -{ - int rc = class_register(&ir_input_class); - if (rc) { - printk(KERN_ERR "ir_core: unable to register rc class\n"); - return rc; - } - - /* Initialize/load the decoders/keymap code that will be used */ - ir_raw_init(); - - return 0; -} - -static void __exit ir_core_exit(void) -{ - class_unregister(&ir_input_class); -} - -module_init(ir_core_init); -module_exit(ir_core_exit); |
