diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-03-20 20:59:44 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-18 00:52:56 -0300 |
| commit | a3572c34da8dacc78a629211a91cf34e9b408701 (patch) | |
| tree | 281efd4d69b68bd4720668fd91cfcf16d1ed3089 /include | |
| parent | 0210894956cf57d525d56341cc3e0f3d5d2db659 (diff) | |
V4L/DVB: ir-core: Add logic to decode IR protocols at the IR core
Adds a method to pass IR raw pulse/code events into ir-core. This is
needed in order to support LIRC. It also helps to move common code
from the drivers into the core.
In order to allow testing, it implements a simple NEC protocol decoder
at ir-nec-decoder.c file. The logic is about the same used at saa7134
driver that handles Avermedia M135A and Encore FM53 boards.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/media/ir-common.h | 3 | ||||
| -rw-r--r-- | include/media/ir-core.h | 32 |
2 files changed, 35 insertions, 0 deletions
diff --git a/include/media/ir-common.h b/include/media/ir-common.h index 41469b79ad1..87f2ec78deb 100644 --- a/include/media/ir-common.h +++ b/include/media/ir-common.h @@ -82,6 +82,9 @@ struct card_ir { /* NEC decoding */ u32 nec_gpio; struct tasklet_struct tlet; + + /* IR core raw decoding */ + u32 raw_decode; }; /* Routines from ir-functions.c */ diff --git a/include/media/ir-core.h b/include/media/ir-core.h index 1eae72d518e..369969d9077 100644 --- a/include/media/ir-core.h +++ b/include/media/ir-core.h @@ -16,6 +16,8 @@ #include <linux/input.h> #include <linux/spinlock.h> +#include <linux/kfifo.h> +#include <linux/time.h> extern int ir_core_debug; #define IR_dprintk(level, fmt, arg...) if (ir_core_debug >= level) \ @@ -27,6 +29,13 @@ extern int ir_core_debug; #define IR_TYPE_NEC (1 << 2) #define IR_TYPE_OTHER (((u64)1) << 63l) +enum raw_event_type { + IR_SPACE = (1 << 0), + IR_PULSE = (1 << 1), + IR_START_EVENT = (1 << 2), + IR_STOP_EVENT = (1 << 3), +}; + struct ir_scancode { u16 scancode; u32 keycode; @@ -46,6 +55,15 @@ struct ir_dev_props { int (*change_protocol)(void *priv, u64 ir_type); }; +struct ir_raw_event { + struct timespec delta; /* Time spent before event */ + enum raw_event_type type; /* event type */ +}; + +struct ir_raw_event_ctrl { + struct kfifo kfifo; /* fifo for the pulse/space events */ + struct timespec last_event; /* when last event occurred */ +}; struct ir_input_dev { struct device dev; /* device */ @@ -53,7 +71,9 @@ struct ir_input_dev { struct ir_scancode_table rc_tab; /* scan/key table */ unsigned long devno; /* device number */ const struct ir_dev_props *props; /* Device properties */ + struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */ }; + #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr) /* Routines from ir-keytable.c */ @@ -72,4 +92,16 @@ void ir_input_unregister(struct input_dev *input_dev); int ir_register_class(struct input_dev *input_dev); void ir_unregister_class(struct input_dev *input_dev); +/* Routines from ir-raw-event.c */ +int ir_raw_event_register(struct input_dev *input_dev); +void ir_raw_event_unregister(struct input_dev *input_dev); +int ir_raw_event_store(struct input_dev *input_dev, enum raw_event_type type); +int ir_raw_event_handle(struct input_dev *input_dev); + +/* from ir-nec-decoder.c */ +int ir_nec_decode(struct input_dev *input_dev, + struct ir_raw_event *evs, + int len); + + #endif |