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Date:   Mon,  3 Apr 2017 20:15:54 -0700
From:   Tony Lindgren <>
To:     Lee Jones <>,
        Samuel Ortiz <>
        Charles Keepax <>,
        Marcel Partap <>,
        Michael Scott <>,
        Sebastian Reichel <>
Subject: [PATCH 1/3] 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")
Cc: Charles Keepax <>
Cc: Marcel Partap <>
Cc: Michael Scott <>
Cc: Sebastian Reichel <>
Signed-off-by: Tony Lindgren <>
 drivers/mfd/motorola-cpcap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/motorola-cpcap.c b/drivers/mfd/motorola-cpcap.c
--- a/drivers/mfd/motorola-cpcap.c
+++ b/drivers/mfd/motorola-cpcap.c
@@ -126,7 +126,7 @@ static int cpcap_init_irq_chip(struct cpcap_ddata *cpcap, int irq_chip,
 	ret = devm_regmap_add_irq_chip(&cpcap->spi->dev, cpcap->regmap,
+				       irq_get_trigger_type(cpcap->spi->irq) |
 				       IRQF_SHARED, -1,
 				       chip, &cpcap->irqdata[irq_chip]);
 	if (ret) {

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