ASoC: wm5102: Expose controls for DRE

Certain use cases may require specific DRE settings so expose control
of these.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

sound/soc/codecs/wm5102.c

@@ -816,6 +816,19 @@ SOC_VALUE_ENUM("HPOUT1 OSR", wm5102_hpout_osr[0]),
 SOC_VALUE_ENUM("HPOUT2 OSR", wm5102_hpout_osr[1]),
 SOC_VALUE_ENUM("EPOUT OSR", wm5102_hpout_osr[2]),
 
+SOC_DOUBLE("HPOUT1 DRE Switch", ARIZONA_DRE_ENABLE,
+	   ARIZONA_DRE1L_ENA_SHIFT, ARIZONA_DRE1R_ENA_SHIFT, 1, 0),
+SOC_DOUBLE("HPOUT2 DRE Switch", ARIZONA_DRE_ENABLE,
+	   ARIZONA_DRE2L_ENA_SHIFT, ARIZONA_DRE2R_ENA_SHIFT, 1, 0),
+SOC_SINGLE("EPOUT DRE Switch", ARIZONA_DRE_ENABLE,
+	   ARIZONA_DRE3L_ENA_SHIFT, 1, 0),
+
+SOC_SINGLE("DRE Threshold", ARIZONA_DRE_CONTROL_2,
+	   ARIZONA_DRE_T_LOW_SHIFT, 63, 0),
+
+SOC_SINGLE("DRE Low Level ABS", ARIZONA_DRE_CONTROL_3,
+	   ARIZONA_DRE_LOW_LEVEL_ABS_SHIFT, 15, 0),
+
 SOC_ENUM("Output Ramp Up", arizona_out_vi_ramp),
 SOC_ENUM("Output Ramp Down", arizona_out_vd_ramp),