Forum Post: RE: TSC2007 probe failed with AM3352 (SDK 07.00)

Hello Miroslav,

I have additional inputs, I added couple of print statements to the hard_irq which should be executed when the PENIRQ signal goes low - I found that this IRQ doesn't run at all.

static irqreturn_t tsc2007_hard_irq(int irq, void *handle)
{
    struct tsc2007 *ts = handle;
    
    dev_err(&ts->client->dev, "Entering %s\n", __func__);
    
    if (tsc2007_is_pen_down(ts))
    {
        dev_err(&ts->client->dev, "Pen down returns true - %s\n", __func__);
        return IRQ_WAKE_THREAD;
    }

    if (ts->clear_penirq)
    {
        dev_err(&ts->client->dev, "Clear pending interrupt - %s\n", __func__);
        ts->clear_penirq();
    }

    return IRQ_HANDLED;
}

I can also confirm that the interrupt is registered, this is output of the /proc/interrupt

root@aa-hcc:~# cat /proc/interrupts
           CPU0
 20:          0      INTC   4  48080000.elm
 28:         34      INTC  12  edma
 30:          0      INTC  14  edma_error
 46:       7005      INTC  30  4819c000.i2c
 52:      78107      INTC  36  da8xx_lcdc
 56:          0      INTC  40  eth0
 57:      28281      INTC  41  eth0
 58:      11887      INTC  42  eth-tx
 59:          0      INTC  43  eth0
 61:       4600      INTC  45
 80:        117      INTC  64  mmc0
 84:      13106      INTC  68  gp_timer
 86:          3      INTC  70  44e0b000.i2c
 88:        149      INTC  72  OMAP UART0
 94:          0      INTC  78  wkup_m3_txev
116:          0      INTC 100  gpmc
125:          0      INTC 109  53100000.sham
127:          0      INTC 111  48310000.rng
173:          0      GPIO  29  mmc0
255:          0      GPIO  16  tsc2007
Err:          0

Any thoughts on what needs to happen to setup GPIO interrupt? Also is it possible for GPIO bank3 EMU1 pin to provide a change notification interrupt?

Thank you

Regards

Santhosh