#define WM8904_EQ23 0x9C
#define WM8904_EQ24 0x9D
#define WM8904_CONTROL_INTERFACE_TEST_1 0xA1
+#define WM8904_ADC_TEST_0 0xC6
#define WM8904_ANALOGUE_OUTPUT_BIAS_0 0xCC
#define WM8904_FLL_NCO_TEST_0 0xF7
#define WM8904_FLL_NCO_TEST_1 0xF8
#define WM8904_USER_KEY_SHIFT 1 /* USER_KEY */
#define WM8904_USER_KEY_WIDTH 1 /* USER_KEY */
+/*
+ * R198 (0xC6) - ADC Test 0
+ */
+#define WM8904_ADC_128_OSR_TST_MODE 0x0004 /* ADC_128_OSR_TST_MODE */
+#define WM8904_ADC_128_OSR_TST_MODE_SHIFT 2 /* ADC_128_OSR_TST_MODE */
+#define WM8904_ADC_128_OSR_TST_MODE_WIDTH 1 /* ADC_128_OSR_TST_MODE */
+#define WM8904_ADC_BIASX1P5 0x0001 /* ADC_BIASX1P5 */
+#define WM8904_ADC_BIASX1P5_SHIFT 0 /* ADC_BIASX1P5 */
+#define WM8904_ADC_BIASX1P5_WIDTH 1 /* ADC_BIASX1P5 */
+
/*
* R204 (0xCC) - Analogue Output Bias 0
*/