From 0d830b2d1295fee82546d57185da5a6604f11ae2 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Tue, 31 Mar 2015 14:48:10 -0300 Subject: [PATCH] [media] rc: rc-core: Add support for encode_wakeup drivers MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add support in rc-core for drivers which implement the wakeup scancode filter by encoding the scancode using the raw IR encoders. This is by way of rc_dev::encode_wakeup which should be set to true to make the allowed wakeup protocols the same as the set of raw IR encoders. As well as updating the sysfs interface to know which wakeup protocols are allowed for encode_wakeup drivers, also ensure that the IR decoders/encoders are loaded when an encode_wakeup driver is registered. Signed-off-by: James Hogan Signed-off-by: Antti Seppälä Cc: David Härdeman Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/rc-core-priv.h | 1 + drivers/media/rc/rc-ir-raw.c | 17 +++++++++++++++++ drivers/media/rc/rc-main.c | 7 ++++++- include/media/rc-core.h | 3 +++ 4 files changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h index 5266ecc7..4b994aa 100644 --- a/drivers/media/rc/rc-core-priv.h +++ b/drivers/media/rc/rc-core-priv.h @@ -189,6 +189,7 @@ int ir_raw_gen_manchester(struct ir_raw_event **ev, unsigned int max, * Routines from rc-raw.c to be used internally and by decoders */ u64 ir_raw_get_allowed_protocols(void); +u64 ir_raw_get_encode_protocols(void); int ir_raw_event_register(struct rc_dev *dev); void ir_raw_event_unregister(struct rc_dev *dev); int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); diff --git a/drivers/media/rc/rc-ir-raw.c b/drivers/media/rc/rc-ir-raw.c index 6c9580e..b9e4645 100644 --- a/drivers/media/rc/rc-ir-raw.c +++ b/drivers/media/rc/rc-ir-raw.c @@ -30,6 +30,7 @@ static LIST_HEAD(ir_raw_client_list); static DEFINE_MUTEX(ir_raw_handler_lock); static LIST_HEAD(ir_raw_handler_list); static u64 available_protocols; +static u64 encode_protocols; static int ir_raw_event_thread(void *data) { @@ -240,6 +241,18 @@ ir_raw_get_allowed_protocols(void) return protocols; } +/* used internally by the sysfs interface */ +u64 +ir_raw_get_encode_protocols(void) +{ + u64 protocols; + + mutex_lock(&ir_raw_handler_lock); + protocols = encode_protocols; + mutex_unlock(&ir_raw_handler_lock); + return protocols; +} + static int change_protocol(struct rc_dev *dev, u64 *rc_type) { /* the caller will update dev->enabled_protocols */ @@ -450,6 +463,8 @@ int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler) list_for_each_entry(raw, &ir_raw_client_list, list) ir_raw_handler->raw_register(raw->dev); available_protocols |= ir_raw_handler->protocols; + if (ir_raw_handler->encode) + encode_protocols |= ir_raw_handler->protocols; mutex_unlock(&ir_raw_handler_lock); return 0; @@ -466,6 +481,8 @@ void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler) list_for_each_entry(raw, &ir_raw_client_list, list) ir_raw_handler->raw_unregister(raw->dev); available_protocols &= ~ir_raw_handler->protocols; + if (ir_raw_handler->encode) + encode_protocols &= ~ir_raw_handler->protocols; mutex_unlock(&ir_raw_handler_lock); } EXPORT_SYMBOL(ir_raw_handler_unregister); diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index 0ff388a..9d015db 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -865,6 +865,8 @@ static ssize_t show_protocols(struct device *device, } else { enabled = dev->enabled_wakeup_protocols; allowed = dev->allowed_wakeup_protocols; + if (dev->encode_wakeup && !allowed) + allowed = ir_raw_get_encode_protocols(); } mutex_unlock(&dev->lock); @@ -1406,13 +1408,16 @@ int rc_register_device(struct rc_dev *dev) path ? path : "N/A"); kfree(path); - if (dev->driver_type == RC_DRIVER_IR_RAW) { + if (dev->driver_type == RC_DRIVER_IR_RAW || dev->encode_wakeup) { /* Load raw decoders, if they aren't already */ if (!raw_init) { IR_dprintk(1, "Loading raw decoders\n"); ir_raw_init(); raw_init = true; } + } + + if (dev->driver_type == RC_DRIVER_IR_RAW) { /* calls ir_register_device so unlock mutex here*/ mutex_unlock(&dev->lock); rc = ir_raw_event_register(dev); diff --git a/include/media/rc-core.h b/include/media/rc-core.h index 5703c08..9ae433c 100644 --- a/include/media/rc-core.h +++ b/include/media/rc-core.h @@ -74,6 +74,8 @@ enum rc_filter_type { * @input_dev: the input child device used to communicate events to userspace * @driver_type: specifies if protocol decoding is done in hardware or software * @idle: used to keep track of RX state + * @encode_wakeup: wakeup filtering uses IR encode API, therefore the allowed + * wakeup protocols is the set of all raw encoders * @allowed_protocols: bitmask with the supported RC_BIT_* protocols * @enabled_protocols: bitmask with the enabled RC_BIT_* protocols * @allowed_wakeup_protocols: bitmask with the supported RC_BIT_* wakeup protocols @@ -134,6 +136,7 @@ struct rc_dev { struct input_dev *input_dev; enum rc_driver_type driver_type; bool idle; + bool encode_wakeup; u64 allowed_protocols; u64 enabled_protocols; u64 allowed_wakeup_protocols; -- 2.7.4