V4L/DVB: ir-core: Distinguish sysfs attributes for in-hardware and raw decoders

Some devices have in-hardware Remote Controller decoder, while others
need a software decoder to get the IR code. As each software decoder
can be enabled/disabled individually, allowing multiple protocol
decoding capability.

On the other hand, hardware decoders have a limited protocol
support, often being able of decoding just one protocol each time.
So, each type needs a different set of capabilities to control the
supported protocol(s).

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 14 insertions, 6 deletions

diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index 4397ea3d9754..e9fa94fe2ef5 100644
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -26,6 +26,11 @@ extern int ir_core_debug;
 #define IR_dprintk(level, fmt, arg...)  if (ir_core_debug >= level) \
         printk(KERN_DEBUG "%s: " fmt , __func__, ## arg)
 
+enum rc_driver_type {
+        RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */
+        RC_DRIVER_IR_RAW,       /* Needs a Infra-Red pulse/space decoder */
+};
+
 enum raw_event_type {
         IR_SPACE        = (1 << 0),
         IR_PULSE        = (1 << 1),
@@ -35,6 +40,8 @@ enum raw_event_type {
 
 /**
  * struct ir_dev_props - Allow caller drivers to set special properties
+ * @driver_type: specifies if the driver or hardware have already a decoder,
+ *      or if it needs to use the IR raw event decoders to produce a scancode
  * @allowed_protos: bitmask with the supported IR_TYPE_* 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
@@ -49,12 +56,13 @@ enum raw_event_type {
  *      is opened.
  */
 struct ir_dev_props {
-        unsigned long   allowed_protos;
-        u32             scanmask;
-        void            *priv;
-        int             (*change_protocol)(void *priv, u64 ir_type);
-        int             (*open)(void *priv);
-        void            (*close)(void *priv);
+        enum rc_driver_type     driver_type;
+        unsigned long           allowed_protos;
+        u32                     scanmask;
+        void                    *priv;
+        int                     (*change_protocol)(void *priv, u64 ir_type);
+        int                     (*open)(void *priv);
+        void                    (*close)(void *priv);
 };
 
 struct ir_raw_event {