diff options
Diffstat (limited to 'drivers/media')
-rw-r--r-- | drivers/media/IR/ir-core-priv.h | 1 | ||||
-rw-r--r-- | drivers/media/IR/ir-keytable.c | 2 | ||||
-rw-r--r-- | drivers/media/IR/ir-raw-event.c | 84 |
3 files changed, 86 insertions, 1 deletions
diff --git a/drivers/media/IR/ir-core-priv.h b/drivers/media/IR/ir-core-priv.h index be6817261c8..8053e3b8427 100644 --- a/drivers/media/IR/ir-core-priv.h +++ b/drivers/media/IR/ir-core-priv.h @@ -41,6 +41,7 @@ struct ir_raw_event_ctrl { /* raw decoder state follows */ struct ir_raw_event prev_ev; + struct ir_raw_event this_ev; struct nec_dec { int state; unsigned count; diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c index 15a0f192d41..411976d10f8 100644 --- a/drivers/media/IR/ir-keytable.c +++ b/drivers/media/IR/ir-keytable.c @@ -428,7 +428,7 @@ static void ir_close(struct input_dev *input_dev) */ int __ir_input_register(struct input_dev *input_dev, const struct ir_scancode_table *rc_tab, - const struct ir_dev_props *props, + struct ir_dev_props *props, const char *driver_name) { struct ir_input_dev *ir_dev; diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c index d0c18db4c0d..43094e7eccf 100644 --- a/drivers/media/IR/ir-raw-event.c +++ b/drivers/media/IR/ir-raw-event.c @@ -140,6 +140,90 @@ int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type typ EXPORT_SYMBOL_GPL(ir_raw_event_store_edge); /** + * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing + * @input_dev: the struct input_dev device descriptor + * @type: the type of the event that has occurred + * + * This routine (which may be called from an interrupt context) works + * in similiar manner to ir_raw_event_store_edge. + * This routine is intended for devices with limited internal buffer + * It automerges samples of same type, and handles timeouts + */ +int ir_raw_event_store_with_filter(struct input_dev *input_dev, + struct ir_raw_event *ev) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + struct ir_raw_event_ctrl *raw = ir->raw; + + if (!raw || !ir->props) + return -EINVAL; + + /* Ignore spaces in idle mode */ + if (ir->idle && !ev->pulse) + return 0; + else if (ir->idle) + ir_raw_event_set_idle(input_dev, 0); + + if (!raw->this_ev.duration) { + raw->this_ev = *ev; + } else if (ev->pulse == raw->this_ev.pulse) { + raw->this_ev.duration += ev->duration; + } else { + ir_raw_event_store(input_dev, &raw->this_ev); + raw->this_ev = *ev; + } + + /* Enter idle mode if nessesary */ + if (!ev->pulse && ir->props->timeout && + raw->this_ev.duration >= ir->props->timeout) + ir_raw_event_set_idle(input_dev, 1); + return 0; +} +EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter); + +void ir_raw_event_set_idle(struct input_dev *input_dev, int idle) +{ + struct ir_input_dev *ir = input_get_drvdata(input_dev); + struct ir_raw_event_ctrl *raw = ir->raw; + ktime_t now; + u64 delta; + + if (!ir->props) + return; + + if (!ir->raw) + goto out; + + if (idle) { + IR_dprintk(2, "enter idle mode\n"); + raw->last_event = ktime_get(); + } else { + IR_dprintk(2, "exit idle mode\n"); + + now = ktime_get(); + delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event)); + + WARN_ON(raw->this_ev.pulse); + + raw->this_ev.duration = + min(raw->this_ev.duration + delta, + (u64)IR_MAX_DURATION); + + ir_raw_event_store(input_dev, &raw->this_ev); + + if (raw->this_ev.duration == IR_MAX_DURATION) + ir_raw_event_reset(input_dev); + + raw->this_ev.duration = 0; + } +out: + if (ir->props->s_idle) + ir->props->s_idle(ir->props->priv, idle); + ir->idle = idle; +} +EXPORT_SYMBOL_GPL(ir_raw_event_set_idle); + +/** * ir_raw_event_handle() - schedules the decoding of stored ir data * @input_dev: the struct input_dev device descriptor * |