On Fri, Sep 09, 2016 at 11:58:32AM +0300, Mika Westerberg wrote:

On Fri, Sep 09, 2016 at 04:23:58PM +0800, Phidias Chiang wrote:

quoted

On Fri, Sep 09, 2016 at 09:18:34AM +0300, Mika Westerberg wrote:

quoted

On Fri, Sep 09, 2016 at 12:28:43AM +0800, Phidias Chiang wrote:

Hmm, how can that happen? The patch removes clearing of INTMASK and only
other place where it is cleared temporarily is on resume. Can you add
dev_info() calls like:

	/* Clear all interrupts */
	chv_writel(0xffff, pctrl->regs + CHV_INTSTAT);
	dev_info(pctrl->dev, "INTMASK0: 0x%08x\n", readl(pctrl->regs + CHV_INTMASK));

	...

	gpiochip_set_chained_irqchip(chip, &chv_gpio_irqchip, irq,
				     chv_gpio_irq_handler);
	dev_info(pctrl->dev, "INTMASK1: 0x%08x\n", readl(pctrl->regs + CHV_INTMASK));
	return 0;

It should print the same values both time.

Also which interrupt does not work and can you send me output of
/proc/interrupts?

Output in dmesg:
[    2.054475] cherryview-pinctrl INT33FF:00: INTMASK0: 0x00000006
[    2.055247] cherryview-pinctrl INT33FF:00: INTMASK1: 0x00000000
[    2.055375] cherryview-pinctrl INT33FF:01: INTMASK0: 0x00004000
[    2.056931] cherryview-pinctrl INT33FF:01: INTMASK1: 0x00000000
[    2.057036] cherryview-pinctrl INT33FF:02: INTMASK0: 0x00000000
[    2.057367] cherryview-pinctrl INT33FF:02: INTMASK1: 0x00000000
[    2.057489] cherryview-pinctrl INT33FF:03: INTMASK0: 0x00000000
[    2.058337] cherryview-pinctrl INT33FF:03: INTMASK1: 0x00000000

So it's somehow got cleared in the process after.

Only other place where we touch INTMASK register is
chv_gpio_irq_mask_unmask(). Can you add some debug there to find out the
caller?

Something like this:

diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c
index 0fe8fad..95fa3b1 100644
--- a/drivers/pinctrl/intel/pinctrl-cherryview.c
+++ b/drivers/pinctrl/intel/pinctrl-cherryview.c

@@ -1357,6 +1357,11 @@ static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask)
 		value |= BIT(intr_line);
 	chv_writel(value, pctrl->regs + CHV_INTMASK);
 
+	if (printk_ratelimit()) {
+		dev_info(pctrl->dev, "%smask pin %u intmask 0x%08x\n",
+			 mask ? "" : "un", pin, readl(pctrl->regs + CHV_INTMASK));
+	}
+
 	raw_spin_unlock_irqrestore(&chv_lock, flags);
 }