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