int
main ( int argc, char **argv )
{
int period, half_period;
int btn0, btn1;
int count;
/* Retreive the mapped GPIO memory. */
if(gpio_setup()==-1){
return -1;
}
period = 1000; /* default = 1Hz */
if ( argc > 1 ) {
period = atoi ( argv[1] );
}
half_period = period / 2;
/* Setup GPIO of LED0 to output. */
if(gpio_config(GPIO_LED0,GPIO_OUTPUT_PIN)==-1 || gpio_config(GPIO_LED1,GPIO_OUTPUT_PIN)==-1 || gpio_config(GPIO_LED2,GPIO_OUTPUT_PIN)==-1 || gpio_config(GPIO_LED3,GPIO_OUTPUT_PIN)==-1 ){
return -1;
}
printf ( "-- info: start blinking @ %f Hz.\n", ( 1000.0f / period ) );
/* Blink led at frequency of 1Hz. */
count = 20;
while ( --count > 0 ) {
gpio_update(GPIO_LED0,count%2);
delay(100);
gpio_update(GPIO_LED1,count%2);
delay(100);
gpio_update(GPIO_LED2,count%2);
delay(100);
gpio_update(GPIO_LED3,count%2);
delay(100);
}
/* Reset state of GPIO. */
gpio_update(GPIO_LED0,0);
gpio_update(GPIO_LED1,0);
gpio_update(GPIO_LED2,0);
gpio_update(GPIO_LED3,0);
gpio_config(GPIO_LED0,GPIO_INPUT_PIN);
gpio_config(GPIO_LED1,GPIO_INPUT_PIN);
gpio_config(GPIO_LED2,GPIO_INPUT_PIN);
gpio_config(GPIO_LED3,GPIO_INPUT_PIN);
/* Release the GPIO memory mapping. */
gpio_teardown();
return 0;
}
static int gpiomux_s_radio(struct v4l2_subdev *sd)
{
struct cx18 *cx = v4l2_get_subdevdata(sd);
/*
* FIXME - work out the cx->active/audio_input mess - this is
* intended to handle the switch to radio mode and set the
* audio routing, but we need to update the state in cx
*/
gpio_update(cx, cx->card->gpio_audio_input.mask,
cx->card->gpio_audio_input.radio);
return 0;
}
static void gpio_reset_seq(struct cx18 *cx, u32 active_lo, u32 active_hi,
unsigned int assert_msecs,
unsigned int recovery_msecs)
{
u32 mask;
mask = active_lo | active_hi;
if (mask == 0)
return;
/*
* Assuming that active_hi and active_lo are a subsets of the bits in
* gpio_dir. Also assumes that active_lo and active_hi don't overlap
* in any bit position
*/
/* Assert */
gpio_update(cx, mask, ~active_lo);
schedule_timeout_uninterruptible(msecs_to_jiffies(assert_msecs));
/* Deassert */
gpio_update(cx, mask, ~active_hi);
schedule_timeout_uninterruptible(msecs_to_jiffies(recovery_msecs));
}
static int gpiomux_s_audio_routing(struct v4l2_subdev *sd,
const struct v4l2_routing *route)
{
struct cx18 *cx = v4l2_get_subdevdata(sd);
u32 data;
switch (route->input) {
case 0:
data = cx->card->gpio_audio_input.tuner;
break;
case 1:
data = cx->card->gpio_audio_input.linein;
break;
case 2:
data = cx->card->gpio_audio_input.radio;
break;
default:
return -EINVAL;
}
gpio_update(cx, cx->card->gpio_audio_input.mask, data);
return 0;
}
static int gpiomux_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
{
struct cx18 *cx = v4l2_get_subdevdata(sd);
u32 data;
switch (cx->card->audio_inputs[cx->audio_input].muxer_input) {
case 1:
data = cx->card->gpio_audio_input.linein;
break;
case 0:
data = cx->card->gpio_audio_input.tuner;
break;
default:
/*
* FIXME - work out the cx->active/audio_input mess - this is
* intended to handle the switch from radio mode and set the
* audio routing, but we need to update the state in cx
*/
data = cx->card->gpio_audio_input.tuner;
break;
}
gpio_update(cx, cx->card->gpio_audio_input.mask, data);
return 0;
}
