From a60d64b15c20d178ba3a9bc3a542492b4ddeea70 Mon Sep 17 00:00:00 2001 From: Sean Young Date: Sat, 23 Sep 2017 10:41:13 -0400 Subject: media: lirc: lirc interface should not be a raw decoder The lirc user interface exists as a raw decoder, which does not make much sense for transmit-only devices. In addition, we want to have lirc char devices for devices which do not use raw IR, i.e. scancode only devices. Note that rc-code, lirc_dev, ir-lirc-codec are now calling functions of each other, so they've been merged into one module rc-core to avoid circular dependencies. Since ir-lirc-codec no longer exists as separate codec module, there is no need for RC_DRIVER_IR_RAW_TX type drivers to call ir_raw_event_register(). Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/rc-main.c | 52 ++++++++++++++++++++++++---------------------- 1 file changed, 27 insertions(+), 25 deletions(-) (limited to 'drivers/media/rc/rc-main.c') diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index 29a90adb0f7c..56b322b3d325 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -846,7 +846,6 @@ int rc_open(struct rc_dev *rdev) return rval; } -EXPORT_SYMBOL_GPL(rc_open); static int ir_open(struct input_dev *idev) { @@ -866,7 +865,6 @@ void rc_close(struct rc_dev *rdev) mutex_unlock(&rdev->lock); } } -EXPORT_SYMBOL_GPL(rc_close); static void ir_close(struct input_dev *idev) { @@ -941,23 +939,6 @@ struct rc_filter_attribute { .mask = (_mask), \ } -static bool lirc_is_present(void) -{ -#if defined(CONFIG_LIRC_MODULE) - struct module *lirc; - - mutex_lock(&module_mutex); - lirc = find_module("lirc_dev"); - mutex_unlock(&module_mutex); - - return lirc ? true : false; -#elif defined(CONFIG_LIRC) - return true; -#else - return false; -#endif -} - /** * show_protocols() - shows the current IR protocol(s) * @device: the device descriptor @@ -1002,8 +983,10 @@ static ssize_t show_protocols(struct device *device, allowed &= ~proto_names[i].type; } - if (dev->driver_type == RC_DRIVER_IR_RAW && lirc_is_present()) +#ifdef CONFIG_LIRC + if (dev->driver_type == RC_DRIVER_IR_RAW) tmp += sprintf(tmp, "[lirc] "); +#endif if (tmp != buf) tmp--; @@ -1759,8 +1742,7 @@ int rc_register_device(struct rc_dev *dev) dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp; dev->sysfs_groups[attr++] = NULL; - if (dev->driver_type == RC_DRIVER_IR_RAW || - dev->driver_type == RC_DRIVER_IR_RAW_TX) { + if (dev->driver_type == RC_DRIVER_IR_RAW) { rc = ir_raw_event_prepare(dev); if (rc < 0) goto out_minor; @@ -1787,19 +1769,28 @@ int rc_register_device(struct rc_dev *dev) goto out_dev; } - if (dev->driver_type == RC_DRIVER_IR_RAW || - dev->driver_type == RC_DRIVER_IR_RAW_TX) { - rc = ir_raw_event_register(dev); + /* Ensure that the lirc kfifo is setup before we start the thread */ + if (dev->driver_type != RC_DRIVER_SCANCODE) { + rc = ir_lirc_register(dev); if (rc < 0) goto out_rx; } + if (dev->driver_type == RC_DRIVER_IR_RAW) { + rc = ir_raw_event_register(dev); + if (rc < 0) + goto out_lirc; + } + IR_dprintk(1, "Registered rc%u (driver: %s)\n", dev->minor, dev->driver_name ? dev->driver_name : "unknown"); return 0; +out_lirc: + if (dev->driver_type != RC_DRIVER_SCANCODE) + ir_lirc_unregister(dev); out_rx: rc_free_rx_device(dev); out_dev: @@ -1853,6 +1844,9 @@ void rc_unregister_device(struct rc_dev *dev) rc_free_rx_device(dev); + if (dev->driver_type != RC_DRIVER_SCANCODE) + ir_lirc_unregister(dev); + device_del(&dev->dev); ida_simple_remove(&rc_ida, dev->minor); @@ -1875,6 +1869,13 @@ static int __init rc_core_init(void) return rc; } + rc = lirc_dev_init(); + if (rc) { + pr_err("rc_core: unable to init lirc\n"); + class_unregister(&rc_class); + return 0; + } + led_trigger_register_simple("rc-feedback", &led_feedback); rc_map_register(&empty_map); @@ -1883,6 +1884,7 @@ static int __init rc_core_init(void) static void __exit rc_core_exit(void) { + lirc_dev_exit(); class_unregister(&rc_class); led_trigger_unregister_simple(led_feedback); rc_map_unregister(&empty_map); -- cgit v1.2.3