mfd: stmpe: DT: Enable no-irq mode configuration

If there is no interrupt property into stmpe node
then activate the no-irq mode by setting the irq
value to -1.

Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index 4b11202061be..e550dcb1d394 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -1057,6 +1057,9 @@ int stmpe_probe(struct stmpe_client_info *ci, int partnum)
                         return -ENOMEM;
 
                 stmpe_of_probe(pdata, np);
+
+                if (of_find_property(np, "interrupts", NULL) == NULL)
+                        ci->irq = -1;
         }
 
         stmpe = devm_kzalloc(ci->dev, sizeof(struct stmpe), GFP_KERNEL);