1 files changed, 109 insertions, 0 deletions
diff --git a/src/drivers/i2c/cs42l42/chip.h b/src/drivers/i2c/cs42l42/chip.h
new file mode 100644
index 0000000000..5be2e14cd1
--- /dev/null
+++ b/src/drivers/i2c/cs42l42/chip.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi_device.h>
+
+enum cs42l42_ts_dbnc_rise {
+	RISE_DEB_0_MS = 0,
+	RISE_DEB_125_MS = 1,
+	RISE_DEB_250_MS = 2,
+	RISE_DEB_500_MS = 3,
+	RISE_DEB_750_MS = 4,
+	RISE_DEB_1000_MS = 5,
+	RISE_DEB_1250_MS = 6,
+	RISE_DEB_1500_MS = 7,
+};
+
+enum cs42l42_ts_dbnc_fall {
+	FALL_DEB_0_MS = 0,
+	FALL_DEB_125_MS = 1,
+	FALL_DEB_250_MS = 2,
+	FALL_DEB_500_MS = 3,
+	FALL_DEB_750_MS = 4,
+	FALL_DEB_1000_MS = 5,
+	FALL_DEB_1250_MS = 6,
+	FALL_DEB_1500_MS = 7,
+};
+
+enum cs42l42_hs_bias_ramp_rate {
+	HSBIAS_RAMP_FAST_RISE_SLOW_FALL = 0,
+	HSBIAS_RAMP_FAST = 1,
+	HSBIAS_RAMP_SLOW = 2,
+	HSBIAS_RAMP_SLOWEST = 3,
+};
+
+/*
+ * Cirrus Logic  CS42L42 Audio Codec devicetree bindings
+ * linux/Documentation/devicetree/bindings/sound/cs42l42.txt
+ */
+struct drivers_i2c_cs42l42_config {
+	/* Interrupt configuration */
+	struct acpi_irq irq;
+
+	/* Use GPIO based interrupt instead of PIRQ */
+	struct acpi_gpio irq_gpio;
+
+	/* Use GPIO based reset gpio */
+	struct acpi_gpio reset_gpio;
+
+	/* I2C Bus Frequency in Hertz (default 400kHz) */
+	unsigned int bus_speed;
+
+	/* Define cs42L42 parameters */
+	/*
+	 * cirrus,ts-inv : Boolean property. For jacks that invert the tip sense
+	 * polarity. Normal jacks will short tip sense pin to HS1 when headphones are
+	 * plugged in and leave tip sense floating when not plugged in. Inverting jacks
+	 * short tip sense when unplugged and float when plugged in.
+	 * false = Non-inverted
+	 * true  = Inverted
+	 * Default = Non-inverted
+	 */
+	bool ts_inv;
+	/*
+	 * cirrus,ts-dbnc-rise : Debounce the rising edge of TIP_SENSE_PLUG. With no
+	 * debounce, the tip sense pin might be noisy on a plug event.
+	 * Default = RISE_DEB_1000_MS
+	 */
+	enum cs42l42_ts_dbnc_rise ts_dbnc_rise;
+	/*
+	 * cirrus,ts-dbnc-fall : Debounce the falling edge of TIP_SENSE_UNPLUG.
+	 * With no debounce, the tip sense pin might be noisy on an unplug event.
+	 * Default = FALL_DEB_1000_MS
+	 */
+	enum cs42l42_ts_dbnc_fall ts_dbnc_fall;
+	/*
+	 * cirrus,btn-det-init-dbnce : This sets how long the driver sleeps after
+	 * enabling button detection interrupts. After auto-detection and before
+	 * servicing button interrupts, the HS bias needs time to settle. If you
+	 * don't wait, there is possibility for erroneous button interrupt.
+	 * Value in ms, 0 - 200.
+	 * Default = 100ms
+	 */
+	unsigned int btn_det_init_dbnce;
+	/*
+	 * cirrus,btn-det-event-dbnce : This sets how long the driver delays after
+	 * receiving a button press interrupt. With level detect interrupts, you want
+	 * to wait a small amount of time to make sure the button press is making a
+	 * clean connection with the bias resistors.
+	 * Value in ms, 0 - 20.
+	 * Default = 10ms
+	 */
+	unsigned int btn_det_event_dbnce;
+	/*
+	 * cirrus,bias-lvls : For a level-detect headset button scheme, each button
+	 * will bias the mic pin to a certain voltage. To determine which button was
+	 * pressed, the driver will compare this biased voltage to sequential,
+	 * decreasing voltages and will stop when a comparator is tripped,
+	 * indicating a comparator voltage < bias voltage. This value represents a
+	 * percentage of the internally generated HS bias voltage. For different
+	 * hardware setups, a designer might want to tweak this. This is an array of
+	 * descending values for the comparator voltage.
+	 * Array of 4 values
+	 * Each 0-63
+	 * < x1 x2 x3 x4 >
+	 * Default = < 15 8 4 1>
+	 */
+	uint64_t bias_lvls[4];
+	/* headset bias ramp rate */
+	enum cs42l42_hs_bias_ramp_rate hs_bias_ramp_rate;
+};