Some applications need to use the irq-active-high push-pull option.
This allows it be enabled in the device tree child node.
Signed-off-by: Matt Ranostay <mranostay@xxxxxxxxx>
---
Documentation/devicetree/bindings/input/cap1106.txt | 4 ++++
drivers/input/keyboard/cap1106.c | 8 ++++++++
2 files changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/input/cap1106.txt b/Documentation/devicetree/bindings/input/cap1106.txt
index 4b46390..6f5a143 100644
--- a/Documentation/devicetree/bindings/input/cap1106.txt
+++ b/Documentation/devicetree/bindings/input/cap1106.txt
@@ -26,6 +26,10 @@ Optional properties:
Valid values are 1, 2, 4, and 8.
By default, a gain of 1 is set.
+ microchip,irq-active-high: By default the interrupt pin is active low
+ open drain. This property allows using the active
+ high push-pull output.
+
linux,keycodes: Specifies an array of numeric keycode values to
be used for the channels. If this property is
omitted, KEY_A, KEY_B, etc are used as
diff --git a/drivers/input/keyboard/cap1106.c b/drivers/input/keyboard/cap1106.c
index 07f9e88..d5ce060 100644
--- a/drivers/input/keyboard/cap1106.c
+++ b/drivers/input/keyboard/cap1106.c
@@ -47,6 +47,7 @@
#define CAP1106_REG_STANDBY_SENSITIVITY 0x42
#define CAP1106_REG_STANDBY_THRESH 0x43
#define CAP1106_REG_CONFIG2 0x44
+#define CAP1106_REG_CONFIG2_ALT_POL BIT(6)
#define CAP1106_REG_SENSOR_BASE_CNT(X) (0x50 + (X))
#define CAP1106_REG_SENSOR_CALIB (0xb1 + (X))
#define CAP1106_REG_SENSOR_CALIB_LSB1 0xb9
@@ -260,6 +261,13 @@ static int cap1106_i2c_probe(struct i2c_client *i2c_client,
dev_err(dev, "Invalid sensor-gain value %d\n", gain32);
}
+ if (of_property_read_bool(node, "microchip,irq-active-high")) {
+ error = regmap_update_bits(priv->regmap, CAP1106_REG_CONFIG2,
+ CAP1106_REG_CONFIG2_ALT_POL, 0);
+ if (error)
+ return error;
+ }
+
/* Provide some useful defaults */
for (i = 0; i < priv->num_channels; i++)
priv->keycodes[i] = KEY_A + i;
--
1.9.1
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