From 587835a4b0ada7d78c4f3300e3ab26b7b2495705 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 4 Apr 2010 10:44:51 -0300 Subject: [PATCH] V4L-DVB: ir-core: remove the ancillary buffer Now that the decoders are state machine, there's no need to create an ancillary buffer while decoding the protocol. Just call the decoders code directly, event by event. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/ir-nec-decoder.c | 32 +++---------------------------- drivers/media/IR/ir-raw-event.c | 20 ++++++++----------- drivers/media/IR/ir-rc5-decoder.c | 28 +-------------------------- include/media/ir-core.h | 3 +-- 4 files changed, 13 insertions(+), 70 deletions(-) diff --git a/drivers/media/IR/ir-nec-decoder.c b/drivers/media/IR/ir-nec-decoder.c index 087211c5496..28d77356355 100644 --- a/drivers/media/IR/ir-nec-decoder.c +++ b/drivers/media/IR/ir-nec-decoder.c @@ -125,14 +125,14 @@ static struct attribute_group decoder_attribute_group = { /** - * handle_event() - Decode one NEC pulse or space + * ir_nec_decode() - Decode one NEC pulse or space * @input_dev: the struct input_dev descriptor of the device * @ev: event array with type/duration of pulse/space * * This function returns -EINVAL if the pulse violates the state machine */ -static int handle_event(struct input_dev *input_dev, - struct ir_raw_event *ev) +static int ir_nec_decode(struct input_dev *input_dev, + struct ir_raw_event *ev) { struct decoder_data *data; struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); @@ -289,32 +289,6 @@ checksum_err: return -EINVAL; } -/** - * ir_nec_decode() - Decodes all NEC pulsecodes on a given array - * @input_dev: the struct input_dev descriptor of the device - * @evs: event array with type/duration of pulse/space - * @len: length of the array - * This function returns the number of decoded pulses - */ -static int ir_nec_decode(struct input_dev *input_dev, - struct ir_raw_event *evs, - int len) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - struct decoder_data *data; - int pos = 0; - int rc = 0; - - data = get_decoder_data(ir_dev); - if (!data || !data->enabled) - return 0; - - for (pos = 0; pos < len; pos++) - handle_event(input_dev, &evs[pos]); - - return rc; -} - static int ir_nec_register(struct input_dev *input_dev) { struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c index 617e437e2be..57990a33792 100644 --- a/drivers/media/IR/ir-raw-event.c +++ b/drivers/media/IR/ir-raw-event.c @@ -138,37 +138,33 @@ int ir_raw_event_handle(struct input_dev *input_dev) { struct ir_input_dev *ir = input_get_drvdata(input_dev); int rc; - struct ir_raw_event *evs; + struct ir_raw_event ev; int len, i; /* * Store the events into a temporary buffer. This allows calling more than * one decoder to deal with the received data */ - len = kfifo_len(&ir->raw->kfifo) / sizeof(*evs); + len = kfifo_len(&ir->raw->kfifo) / sizeof(ev); if (!len) return 0; - evs = kmalloc(len * sizeof(*evs), GFP_ATOMIC); for (i = 0; i < len; i++) { - rc = kfifo_out(&ir->raw->kfifo, &evs[i], sizeof(*evs)); - if (rc != sizeof(*evs)) { + rc = kfifo_out(&ir->raw->kfifo, &ev, sizeof(ev)); + if (rc != sizeof(ev)) { IR_dprintk(1, "overflow error: received %d instead of %zd\n", - rc, sizeof(*evs)); + rc, sizeof(ev)); return -EINVAL; } IR_dprintk(2, "event type %d, time before event: %07luus\n", - evs[i].type, (evs[i].delta.tv_nsec + 500) / 1000); + ev.type, (ev.delta.tv_nsec + 500) / 1000); + rc = RUN_DECODER(decode, input_dev, &ev); } /* * Call all ir decoders. This allows decoding the same event with - * more than one protocol handler. It returns the number of keystrokes - * sent to the event interface + * more than one protocol handler. */ - rc = RUN_DECODER(decode, input_dev, evs, len); - - kfree(evs); return rc; } diff --git a/drivers/media/IR/ir-rc5-decoder.c b/drivers/media/IR/ir-rc5-decoder.c index 4b7eafecd84..61b58397a3c 100644 --- a/drivers/media/IR/ir-rc5-decoder.c +++ b/drivers/media/IR/ir-rc5-decoder.c @@ -142,7 +142,7 @@ static struct attribute_group decoder_attribute_group = { * * This function returns -EINVAL if the pulse violates the state machine */ -static int handle_event(struct input_dev *input_dev, +static int ir_rc5_decode(struct input_dev *input_dev, struct ir_raw_event *ev) { struct decoder_data *data; @@ -273,32 +273,6 @@ err2: return -EINVAL; } -/** - * ir_rc5_decode() - Decodes all RC-5 pulsecodes on a given array - * @input_dev: the struct input_dev descriptor of the device - * @evs: event array with type/duration of pulse/space - * @len: length of the array - * This function returns the number of decoded pulses - */ -static int ir_rc5_decode(struct input_dev *input_dev, - struct ir_raw_event *evs, - int len) -{ - struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); - struct decoder_data *data; - int pos = 0; - int rc = 0; - - data = get_decoder_data(ir_dev); - if (!data || !data->enabled) - return 0; - - for (pos = 0; pos < len; pos++) - handle_event(input_dev, &evs[pos]); - - return rc; -} - static int ir_rc5_register(struct input_dev *input_dev) { struct ir_input_dev *ir_dev = input_get_drvdata(input_dev); diff --git a/include/media/ir-core.h b/include/media/ir-core.h index 40900739cb8..1c1e8d9bd10 100644 --- a/include/media/ir-core.h +++ b/include/media/ir-core.h @@ -101,8 +101,7 @@ struct ir_raw_handler { struct list_head list; int (*decode)(struct input_dev *input_dev, - struct ir_raw_event *evs, - int len); + struct ir_raw_event *ev); int (*raw_register)(struct input_dev *input_dev); int (*raw_unregister)(struct input_dev *input_dev); }; -- 2.39.3