mfd: cpcap: Fix interrupt to use level interrupt

I made a mistake assuming the device tree configuration for interrupt
triggering was somehow passed to the SPI device but it's not.

In the Motorola Linux kernel tree CPCAP PMIC is configured as a rising
edge triggered interrupt, but then then it's interrupt handler keeps
looping until the GPIO line goes down. So the CPCAP interrupt is clearly
a level interrupt and not an edge interrupt.

Earlier when I tried to configure it as level interrupt using the
device tree, I did not account that the triggering only gets passed
to the SPI core and it also needs to be specified in the CPCAP driver
when we do devm_regmap_add_irq_chip().

Fixes: 56e1d40d3bea ("mfd: cpcap: Add minimal support")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/motorola-cpcap.c b/drivers/mfd/motorola-cpcap.c
index a9097ef..cd93f5c 100644 (file)
--- a/drivers/mfd/motorola-cpcap.c
+++ b/drivers/mfd/motorola-cpcap.c
@@ -154,7 +154,7 @@ static int cpcap_init_irq_chip(struct cpcap_ddata *cpcap, int irq_chip,
 
        ret = devm_regmap_add_irq_chip(&cpcap->spi->dev, cpcap->regmap,
                                       cpcap->spi->irq,
-                                      IRQF_TRIGGER_RISING |
+                                      irq_get_trigger_type(cpcap->spi->irq) |
                                       IRQF_SHARED, -1,
                                       chip, &cpcap->irqdata[irq_chip]);
        if (ret) {