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imx233: cleanup lradc button driver

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Change-Id: I85fbe6807a1f91ae5be97b6847c07b24a4f18c24
This commit is contained in:
Amaury Pouly 2013-09-05 23:12:33 +02:00
parent 3f20d13662
commit f13cad4c8e
1 changed files with 5 additions and 8 deletions
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13
firmware/target/arm/imx233/button-lradc-imx233.c
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@ -65,7 +65,7 @@ static int button_find(int val)
btn = table[0].btn;
else if(i == table_size)
btn = table[i - 1].btn;
// choose best between i-1 and i (note that table[i-1]<=val<=table[i]) */
// choose best between i-1 and i (note that table[i-1]<=val<table[i]) */
else if(val - table[i - 1].adc_val < table[i].adc_val - val)
btn = table[i - 1].btn;
else
@ -73,8 +73,6 @@ static int button_find(int val)
return btn;
}
int button_value;
static void button_lradc_irq(int chan)
{
(void) chan;
@ -84,7 +82,6 @@ static void button_lradc_irq(int chan)
imx233_lradc_setup_channel(button_chan, true, true, SAMPLES - 1, LRADC_SRC(CHAN));
imx233_lradc_setup_delay(button_delay, 1 << button_chan, 0, SAMPLES - 1, DELAY);
imx233_lradc_kick_delay(button_delay);
button_value = button_val[button_idx];
/* compute mask, compare to previous one */
button_val[button_idx] = button_find(button_val[button_idx]);
button_idx = 1 - button_idx;
@ -94,6 +91,10 @@ static void button_lradc_irq(int chan)
void imx233_button_lradc_init(void)
{
table_size = 0;
while(imx233_button_lradc_mapping[table_size].btn != IMX233_BUTTON_LRADC_END)
table_size++;
button_chan = imx233_lradc_acquire_channel(LRADC_SRC(CHAN), TIMEOUT_NOBLOCK);
if(button_chan < 0)
panicf("Cannot get channel for button-lradc");
@ -105,10 +106,6 @@ void imx233_button_lradc_init(void)
imx233_lradc_enable_channel_irq(button_chan, true);
imx233_lradc_set_channel_irq_callback(button_chan, button_lradc_irq);
imx233_lradc_kick_delay(button_delay);
table_size = 0;
while(imx233_button_lradc_mapping[table_size].btn != IMX233_BUTTON_LRADC_END)
table_size++;
}
bool imx233_button_lradc_hold(void)