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V4L/DVB: ir-core/saa7134: Move ir keyup/keydown code to the ir-core 

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2010-03-21 12:24:24 -03:00
parent 6660de568d
commit ada39630c7
3 changed files with 61 additions and 44 deletions
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90
drivers/media/IR/ir-nec-decoder.c
View File

@ -30,37 +30,35 @@
#define MIN_BIT0_TIME 360000
#define MAX_BIT0_TIME 760000
/** Decode NEC pulsecode. This code can take up to 76.5 ms to run.
Unfortunately, using IRQ to decode pulse didn't work, since it uses
a pulse train of 38KHz. This means one pulse on each 52 us
*/
int ir_nec_decode(struct input_dev *input_dev,
struct ir_raw_event *evs,
int len)
/**
* __ir_nec_decode() - Decode one NEC pulsecode
* @input_dev: the struct input_dev descriptor of the device
* @evs: event array with type/duration of pulse/space
* @len: length of the array
* @pos: position to start seeking for a code
* This function returns the decoded ircode or -EINVAL if no pulse got decoded
*/
static int __ir_nec_decode(struct input_dev *input_dev,
struct ir_raw_event *evs,
int len, int *pos)
{
int i, count = -1;
int count = -1;
int ircode = 0, not_code = 0;
#if 0
/* Needed only after porting the event code to the decoder */
struct ir_input_dev *ir = input_get_drvdata(input_dev);
#endif
/* Be sure that the first event is an start one and is a pulse */
for (i = 0; i < len; i++) {
if (evs[i].type & (IR_START_EVENT | IR_PULSE))
for (; *pos < len; (*pos)++) {
if (evs[*pos].type & (IR_START_EVENT | IR_PULSE))
break;
}
i++; /* First event doesn't contain data */
(*pos)++; /* First event doesn't contain data */
if (i >= len)
if (*pos >= len)
return 0;
/* First space should have 4.5 ms otherwise is not NEC protocol */
if ((evs[i].delta.tv_nsec < MIN_START_TIME) |
(evs[i].delta.tv_nsec > MAX_START_TIME) |
(evs[i].type != IR_SPACE))
if ((evs[*pos].delta.tv_nsec < MIN_START_TIME) |
(evs[*pos].delta.tv_nsec > MAX_START_TIME) |
(evs[*pos].type != IR_SPACE))
goto err;
/*
@ -68,24 +66,24 @@ int ir_nec_decode(struct input_dev *input_dev,
*/
count = 0;
for (i++; i < len; i++) {
for ((*pos)++; *pos < len; (*pos)++) {
int bit;
if ((evs[i].delta.tv_nsec < MIN_PULSE_TIME) |
(evs[i].delta.tv_nsec > MAX_PULSE_TIME) |
(evs[i].type != IR_PULSE))
if ((evs[*pos].delta.tv_nsec < MIN_PULSE_TIME) |
(evs[*pos].delta.tv_nsec > MAX_PULSE_TIME) |
(evs[*pos].type != IR_PULSE))
goto err;
if (++i >= len)
if (++*pos >= len)
goto err;
if (evs[i].type != IR_SPACE)
if (evs[*pos].type != IR_SPACE)
goto err;
if ((evs[i].delta.tv_nsec > MIN_BIT1_TIME) &&
(evs[i].delta.tv_nsec < MAX_BIT1_TIME))
if ((evs[*pos].delta.tv_nsec > MIN_BIT1_TIME) &&
(evs[*pos].delta.tv_nsec < MAX_BIT1_TIME))
bit = 1;
else if ((evs[i].delta.tv_nsec > MIN_BIT0_TIME) &&
(evs[i].delta.tv_nsec < MAX_BIT0_TIME))
else if ((evs[*pos].delta.tv_nsec > MIN_BIT0_TIME) &&
(evs[*pos].delta.tv_nsec < MAX_BIT0_TIME))
bit = 0;
else
goto err;
@ -120,12 +118,40 @@ int ir_nec_decode(struct input_dev *input_dev,
}
IR_dprintk(1, "NEC scancode 0x%04x\n", ircode);
ir_keydown(input_dev, ircode);
ir_keyup(input_dev);
return ircode;
err:
IR_dprintk(1, "NEC decoded failed at bit %d while decoding %luus time\n",
count, (evs[i].delta.tv_nsec + 500) / 1000);
count, (evs[*pos].delta.tv_nsec + 500) / 1000);
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 or -EINVAL if no
* pulse got decoded
*/
int ir_nec_decode(struct input_dev *input_dev,
struct ir_raw_event *evs,
int len)
{
int pos = 0;
int rc = 0;
while (pos < len) {
if (__ir_nec_decode(input_dev, evs, len, &pos) >= 0)
rc++;
}
if (!rc)
return -EINVAL;
return rc;
}
EXPORT_SYMBOL_GPL(ir_nec_decode);

12
drivers/media/video/saa7134/saa7134-input.c
View File

@ -425,18 +425,8 @@ static void saa7134_input_timer(unsigned long data)
void ir_raw_decode_timer_end(unsigned long data)
{
struct saa7134_dev *dev = (struct saa7134_dev *)data;
struct card_ir *ir = dev->remote;
int rc;
/*
* FIXME: the IR key handling code should be called by the decoder,
* after implementing the repeat mode
*/
rc = ir_raw_event_handle(dev->remote->dev);
if (rc >= 0) {
ir_input_keydown(ir->dev, &ir->ir, rc);
ir_input_nokey(ir->dev, &ir->ir);
}
ir_raw_event_handle(dev->remote->dev);
}
void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)

3
include/media/ir-core.h
View File

@ -84,7 +84,8 @@ struct ir_input_dev {
u32 ir_g_keycode_from_table(struct input_dev *input_dev,
u32 scancode);
void ir_keyup(struct input_dev *dev);
void ir_keydown(struct input_dev *dev, int scancode);
int ir_input_register(struct input_dev *dev,
const struct ir_scancode_table *ir_codes,
const struct ir_dev_props *props,