diff options
Diffstat (limited to 'drivers/media/IR/ir-sysfs.c')
| -rw-r--r-- | drivers/media/IR/ir-sysfs.c | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c deleted file mode 100644 index 38423a8da871..000000000000 --- a/drivers/media/IR/ir-sysfs.c +++ /dev/null @@ -1,362 +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, -}; - -static struct { - u64 type; - char *name; -} proto_names[] = { - { IR_TYPE_UNKNOWN, "unknown" }, - { IR_TYPE_RC5, "rc-5" }, - { IR_TYPE_NEC, "nec" }, - { IR_TYPE_RC6, "rc-6" }, - { IR_TYPE_JVC, "jvc" }, - { IR_TYPE_SONY, "sony" }, - { IR_TYPE_RC5_SZ, "rc-5-sz" }, - { IR_TYPE_LIRC, "lirc" }, -}; - -#define PROTO_NONE "none" - -/** - * show_protocols() - shows the current IR protocol(s) - * @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(s). - * it is trigged by reading /sys/class/rc/rc?/protocols. - * It returns the protocol names of supported protocols. - * Enabled protocols are printed in brackets. - */ -static ssize_t show_protocols(struct device *d, - struct device_attribute *mattr, char *buf) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - u64 allowed, enabled; - char *tmp = buf; - int i; - - /* Device is being removed */ - if (!ir_dev) - return -EINVAL; - - if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { - enabled = ir_dev->rc_tab.ir_type; - allowed = ir_dev->props->allowed_protos; - } else if (ir_dev->raw) { - enabled = ir_dev->raw->enabled_protocols; - allowed = ir_raw_get_allowed_protocols(); - } else - return sprintf(tmp, "[builtin]\n"); - - IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n", - (long long)allowed, - (long long)enabled); - - for (i = 0; i < ARRAY_SIZE(proto_names); i++) { - if (allowed & enabled & proto_names[i].type) - tmp += sprintf(tmp, "[%s] ", proto_names[i].name); - else if (allowed & proto_names[i].type) - tmp += sprintf(tmp, "%s ", proto_names[i].name); - } - - if (tmp != buf) - tmp--; - *tmp = '\n'; - return tmp + 1 - buf; -} - -/** - * store_protocols() - changes the current IR protocol(s) - * @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 writing to /sys/class/rc/rc?/protocols. - * 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. - */ -static ssize_t store_protocols(struct device *d, - struct device_attribute *mattr, - const char *data, - size_t len) -{ - struct ir_input_dev *ir_dev = dev_get_drvdata(d); - bool enable, disable; - const char *tmp; - u64 type; - u64 mask; - int rc, i, count = 0; - unsigned long flags; - - /* Device is being removed */ - if (!ir_dev) - return -EINVAL; - - if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) - type = ir_dev->rc_tab.ir_type; - else if (ir_dev->raw) - type = ir_dev->raw->enabled_protocols; - else { - IR_dprintk(1, "Protocol switching not supported\n"); - return -EINVAL; - } - - while ((tmp = strsep((char **) &data, " \n")) != NULL) { - if (!*tmp) - break; - - if (*tmp == '+') { - enable = true; - disable = false; - tmp++; - } else if (*tmp == '-') { - enable = false; - disable = true; - tmp++; - } else { - enable = false; - disable = false; - } - - if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) { - tmp += sizeof(PROTO_NONE); - mask = 0; - count++; - } 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: '%s'\n", tmp); - return -EINVAL; - } - count++; - } - - if (enable) - type |= mask; - else if (disable) - type &= ~mask; - else - type = mask; - } - - if (!count) { - IR_dprintk(1, "Protocol not specified\n"); - return -EINVAL; - } - - if (ir_dev->props && ir_dev->props->change_protocol) { - rc = ir_dev->props->change_protocol(ir_dev->props->priv, - type); - if (rc < 0) { - IR_dprintk(1, "Error setting protocols to 0x%llx\n", - (long long)type); - return -EINVAL; - } - } - - if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { - spin_lock_irqsave(&ir_dev->rc_tab.lock, flags); - ir_dev->rc_tab.ir_type = type; - spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags); - } else { - ir_dev->raw->enabled_protocols = type; - } - - IR_dprintk(1, "Current protocol(s): 0x%llx\n", - (long long)type); - - return len; -} - -#define ADD_HOTPLUG_VAR(fmt, val...) \ - do { \ - int err = add_uevent_var(env, fmt, val); \ - if (err) \ - return err; \ - } while (0) - -static int rc_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(protocols, S_IRUGO | S_IWUSR, - show_protocols, store_protocols); - -static struct attribute *rc_dev_attrs[] = { - &dev_attr_protocols.attr, - NULL, -}; - -static struct attribute_group rc_dev_attr_grp = { - .attrs = rc_dev_attrs, -}; - -static const struct attribute_group *rc_dev_attr_groups[] = { - &rc_dev_attr_grp, - NULL -}; - -static struct device_type rc_dev_type = { - .groups = rc_dev_attr_groups, - .uevent = rc_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) -{ - 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; - - ir_dev->dev.type = &rc_dev_type; - ir_dev->devno = devno; - - ir_dev->dev.class = &ir_input_class; - ir_dev->dev.parent = input_dev->dev.parent; - input_dev->dev.parent = &ir_dev->dev; - dev_set_name(&ir_dev->dev, "rc%d", devno); - dev_set_drvdata(&ir_dev->dev, ir_dev); - return device_register(&ir_dev->dev); -}; - -/** - * ir_register_input - registers ir input device with input subsystem - * @input_dev: the struct input_dev descriptor of the device - */ - -int ir_register_input(struct input_dev *input_dev) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - int rc; - const char *path; - - - 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); - - set_bit(ir_dev->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); - - input_set_drvdata(input_dev, NULL); - 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(); - ir_rcmap_init(); - - return 0; -} - -static void __exit ir_core_exit(void) -{ - class_unregister(&ir_input_class); - ir_rcmap_cleanup(); -} - -module_init(ir_core_init); -module_exit(ir_core_exit); |
