[media] rc-core: document the protocol type

Right now the protocol information is not preserved, rc-core gets handed a
scancode but has no idea which protocol it corresponds to.

This patch (which required reading through the source/keymap for all drivers,
not fun) makes the protocol information explicit which is important
documentation and makes it easier to e.g. support multiple protocols with one
decoder (think rc5 and rc-streamzap). The information isn't used yet so there
should be no functional changes.

[m.chehab@samsung.com: rebased, added cxusb and removed bad whitespacing]
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index fde142e5f25a..00811c9e22b0 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -89,6 +89,7 @@ enum rc_filter_type {
  * @keyup_jiffies: time (in jiffies) when the current keypress should be released
  * @timer_keyup: timer for releasing a keypress
  * @last_keycode: keycode of last keypress
+ * @last_protocol: protocol of last keypress
  * @last_scancode: scancode of last keypress
  * @last_toggle: toggle value of last command
  * @timeout: optional time after which device stops sending data
@@ -113,7 +114,7 @@ enum rc_filter_type {
  *      device doesn't interrupt host until it sees IR pulses
  * @s_learning_mode: enable wide band receiver used for learning
  * @s_carrier_report: enable carrier reports
- * @s_filter: set the scancode filter 
+ * @s_filter: set the scancode filter
  * @s_wakeup_filter: set the wakeup scancode filter
  */
 struct rc_dev {
@@ -141,6 +142,7 @@ struct rc_dev {
         unsigned long                   keyup_jiffies;
         struct timer_list               timer_keyup;
         u32                             last_keycode;
+        enum rc_type                    last_protocol;
         u32                             last_scancode;
         u8                              last_toggle;
         u32                             timeout;
@@ -221,8 +223,8 @@ int rc_open(struct rc_dev *rdev);
 void rc_close(struct rc_dev *rdev);
 
 void rc_repeat(struct rc_dev *dev);
-void rc_keydown(struct rc_dev *dev, int scancode, u8 toggle);
-void rc_keydown_notimeout(struct rc_dev *dev, int scancode, u8 toggle);
+void rc_keydown(struct rc_dev *dev, enum rc_type protocol, u32 scancode, u8 toggle);
+void rc_keydown_notimeout(struct rc_dev *dev, enum rc_type protocol, u32 scancode, u8 toggle);
 void rc_keyup(struct rc_dev *dev);
 u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode);