ASoC: Add ADAU1361/ADAU1761 audio CODEC support

This patch adds support for the Analog Devices ADAU1361 and ADAU1761 CODECs.
The device is a a low-power, 24-bit stereo audio CODEC with multiple analog
input and outputs, one digital microphone input and an I2S interface. The device
can be controlled either via I2C or SPI. The main difference between the two
variants is that the ADAU1761 has a built-in SigmaDSP, while the ADAU1361 has
not.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/include/linux/platform_data/adau17x1.h b/include/linux/platform_data/adau17x1.h
index f90bd9286f31..d234d9e46fd6 100644
--- a/include/linux/platform_data/adau17x1.h
+++ b/include/linux/platform_data/adau17x1.h
@@ -20,4 +20,71 @@ enum adau17x1_micbias_voltage {
         ADAU17X1_MICBIAS_0_65_AVDD = 1,
 };
 
+/**
+ * enum adau1761_digmic_jackdet_pin_mode - Configuration of the JACKDET/MICIN pin
+ * @ADAU1761_DIGMIC_JACKDET_PIN_MODE_NONE: Disable the pin
+ * @ADAU1761_DIGMIC_JACKDET_PIN_MODE_DIGMIC: Configure the pin for usage as
+ *   digital microphone input.
+ * @ADAU1761_DIGMIC_JACKDET_PIN_MODE_JACKDETECT: Configure the pin for jack
+ *  insertion detection.
+ */
+enum adau1761_digmic_jackdet_pin_mode {
+        ADAU1761_DIGMIC_JACKDET_PIN_MODE_NONE,
+        ADAU1761_DIGMIC_JACKDET_PIN_MODE_DIGMIC,
+        ADAU1761_DIGMIC_JACKDET_PIN_MODE_JACKDETECT,
+};
+
+/**
+ * adau1761_jackdetect_debounce_time - Jack insertion detection debounce time
+ * @ADAU1761_JACKDETECT_DEBOUNCE_5MS: 5 milliseconds
+ * @ADAU1761_JACKDETECT_DEBOUNCE_10MS: 10 milliseconds
+ * @ADAU1761_JACKDETECT_DEBOUNCE_20MS: 20 milliseconds
+ * @ADAU1761_JACKDETECT_DEBOUNCE_40MS: 40 milliseconds
+ */
+enum adau1761_jackdetect_debounce_time {
+        ADAU1761_JACKDETECT_DEBOUNCE_5MS = 0,
+        ADAU1761_JACKDETECT_DEBOUNCE_10MS = 1,
+        ADAU1761_JACKDETECT_DEBOUNCE_20MS = 2,
+        ADAU1761_JACKDETECT_DEBOUNCE_40MS = 3,
+};
+
+/**
+ * enum adau1761_output_mode - Output mode configuration
+ * @ADAU1761_OUTPUT_MODE_HEADPHONE: Headphone output
+ * @ADAU1761_OUTPUT_MODE_HEADPHONE_CAPLESS: Capless headphone output
+ * @ADAU1761_OUTPUT_MODE_LINE: Line output
+ */
+enum adau1761_output_mode {
+        ADAU1761_OUTPUT_MODE_HEADPHONE,
+        ADAU1761_OUTPUT_MODE_HEADPHONE_CAPLESS,
+        ADAU1761_OUTPUT_MODE_LINE,
+};
+
+/**
+ * struct adau1761_platform_data - ADAU1761 Codec driver platform data
+ * @input_differential: If true the input pins will be configured in
+ *  differential mode.
+ * @lineout_mode: Output mode for the LOUT/ROUT pins
+ * @headphone_mode: Output mode for the LHP/RHP pins
+ * @digmic_jackdetect_pin_mode: JACKDET/MICIN pin configuration
+ * @jackdetect_debounce_time: Jack insertion detection debounce time.
+ *  Note: This value will only be used, if the JACKDET/MICIN pin is configured
+ *  for jack insertion detection.
+ * @jackdetect_active_low: If true the jack insertion detection is active low.
+ *  Othwise it will be active high.
+ * @micbias_voltage: Microphone voltage bias
+ */
+struct adau1761_platform_data {
+        bool input_differential;
+        enum adau1761_output_mode lineout_mode;
+        enum adau1761_output_mode headphone_mode;
+
+        enum adau1761_digmic_jackdet_pin_mode digmic_jackdetect_pin_mode;
+
+        enum adau1761_jackdetect_debounce_time jackdetect_debounce_time;
+        bool jackdetect_active_low;
+
+        enum adau17x1_micbias_voltage micbias_voltage;
+};
+
 #endif