Commit 6bdd2fd1 authored by Matt Ranostay's avatar Matt Ranostay Committed by Dmitry Torokhov

Input: cap11xx - support for irq-active-high option

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: default avatarMatt Ranostay <mranostay@gmail.com>
Reviewed-by: default avatarDaniel Mack <daniel@zonque.org>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 7609a5e9
...@@ -28,6 +28,10 @@ Optional properties: ...@@ -28,6 +28,10 @@ Optional properties:
Valid values are 1, 2, 4, and 8. Valid values are 1, 2, 4, and 8.
By default, a gain of 1 is set. 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 linux,keycodes: Specifies an array of numeric keycode values to
be used for the channels. If this property is be used for the channels. If this property is
omitted, KEY_A, KEY_B, etc are used as omitted, KEY_A, KEY_B, etc are used as
......
...@@ -45,6 +45,7 @@ ...@@ -45,6 +45,7 @@
#define CAP11XX_REG_STANDBY_SENSITIVITY 0x42 #define CAP11XX_REG_STANDBY_SENSITIVITY 0x42
#define CAP11XX_REG_STANDBY_THRESH 0x43 #define CAP11XX_REG_STANDBY_THRESH 0x43
#define CAP11XX_REG_CONFIG2 0x44 #define CAP11XX_REG_CONFIG2 0x44
#define CAP11XX_REG_CONFIG2_ALT_POL BIT(6)
#define CAP11XX_REG_SENSOR_BASE_CNT(X) (0x50 + (X)) #define CAP11XX_REG_SENSOR_BASE_CNT(X) (0x50 + (X))
#define CAP11XX_REG_SENSOR_CALIB (0xb1 + (X)) #define CAP11XX_REG_SENSOR_CALIB (0xb1 + (X))
#define CAP11XX_REG_SENSOR_CALIB_LSB1 0xb9 #define CAP11XX_REG_SENSOR_CALIB_LSB1 0xb9
...@@ -263,6 +264,13 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client, ...@@ -263,6 +264,13 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client,
dev_err(dev, "Invalid sensor-gain value %d\n", gain32); 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, CAP11XX_REG_CONFIG2,
CAP11XX_REG_CONFIG2_ALT_POL, 0);
if (error)
return error;
}
/* Provide some useful defaults */ /* Provide some useful defaults */
for (i = 0; i < cap->num_channels; i++) for (i = 0; i < cap->num_channels; i++)
priv->keycodes[i] = KEY_A + i; priv->keycodes[i] = KEY_A + i;
......
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