From c003ab1bedf028db15b0185b683d5c387204e8f5 Mon Sep 17 00:00:00 2001 From: David Härdeman Date: Thu, 11 Oct 2012 19:11:54 -0300 Subject: [media] rc-core: add separate defines for protocol bitmaps and numbers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The RC_TYPE_* defines are currently used both where a single protocol is expected and where a bitmap of protocols is expected. Functions like rc_keydown() and functions which add/remove entries to the keytable want a single protocol. Future userspace APIs would also benefit from numeric protocols (rather than bitmap ones). Keytables are smaller if they can use a small(ish) integer rather than a bitmap. Other functions or struct members (e.g. allowed_protos, enabled_protocols, etc) accept multiple protocols and need a bitmap. Using different types reduces the risk of programmer error. Using a protocol enum whereever possible also makes for a more future-proof user-space API as we don't need to worry about a sufficient number of bits being available (e.g. in structs used for ioctl() calls). The use of both a number and a corresponding bit is dalso one in e.g. the input subsystem as well (see all the references to set/clear bit when changing keytables for example). This patch separate the different usages in preparation for upcoming patches. Where a single protocol is expected, enum rc_type is used; where one or more protocol(s) are expected, something like u64 is used. The patch has been rewritten so that the format of the sysfs "protocols" file is no longer altered (at the loss of some detail). The file itself should probably be deprecated in the future though. Signed-off-by: David Härdeman Cc: Andy Walls Cc: Maxim Levitsky Cc: Antti Palosaari Cc: Mike Isely Signed-off-by: Mauro Carvalho Chehab --- include/media/rc-core.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/media/rc-core.h') diff --git a/include/media/rc-core.h b/include/media/rc-core.h index b0c494a69079..f03445f3c767 100644 --- a/include/media/rc-core.h +++ b/include/media/rc-core.h @@ -50,7 +50,7 @@ enum rc_driver_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 - * @allowed_protos: bitmask with the supported RC_TYPE_* protocols + * @allowed_protos: bitmask with the supported RC_BIT_* protocols * @scanmask: some hardware decoders are not capable of providing the full * scancode to the application. As this is a hardware limit, we can't do * anything with it. Yet, as the same keycode table can be used with other @@ -113,7 +113,7 @@ struct rc_dev { u32 max_timeout; u32 rx_resolution; u32 tx_resolution; - int (*change_protocol)(struct rc_dev *dev, u64 rc_type); + int (*change_protocol)(struct rc_dev *dev, u64 *rc_type); int (*open)(struct rc_dev *dev); void (*close)(struct rc_dev *dev); int (*s_tx_mask)(struct rc_dev *dev, u32 mask); -- cgit v1.2.3