ASoC: SDP3430: Fix TWL GPIO6 pin mux request

Fix the write to PMBR1 register through I2C. Also, the constant which
holds the value to write is now called TWL4030_GPIO6_PWM0_MUTE. This
name is based on TRM to avoid confusion.

Signed-off-by: Jorge Eduardo Candelaria <x0107209@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 11 insertions, 4 deletions

diff --git a/sound/soc/omap/sdp3430.c b/sound/soc/omap/sdp3430.c
index f7e5b7488c35..4a3f62d1f295 100644
--- a/sound/soc/omap/sdp3430.c
+++ b/sound/soc/omap/sdp3430.c
@@ -40,8 +40,10 @@
 #include "omap-pcm.h"
 #include "../codecs/twl4030.h"
 
-#define TWL4030_INTBR_PMBR1     0x0D
-#define EXTMUTE(value)          (value << 2)
+/* TWL4030 PMBR1 Register */
+#define TWL4030_INTBR_PMBR1             0x0D
+/* TWL4030 PMBR1 Register GPIO6 mux bit */
+#define TWL4030_GPIO6_PWM0_MUTE(value)  (value << 2)
 
 static struct snd_soc_card snd_soc_sdp3430;
 
@@ -299,6 +301,7 @@ static struct platform_device *sdp3430_snd_device;
 static int __init sdp3430_soc_init(void)
 {
         int ret;
+        u8 pin_mux;
 
         if (!machine_is_omap_3430sdp()) {
                 pr_debug("Not SDP3430!\n");
@@ -318,8 +321,12 @@ static int __init sdp3430_soc_init(void)
         *(unsigned int *)sdp3430_dai[1].cpu_dai->private_data = 2; /* McBSP3 */
 
         /* Set TWL4030 GPIO6 as EXTMUTE signal */
-        twl4030_i2c_write_u8(TWL4030_MODULE_INTBR, EXTMUTE(0x02),
-                                                        TWL4030_MODULE_INTBR);
+        twl4030_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
+                                                TWL4030_INTBR_PMBR1);
+        pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
+        pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
+        twl4030_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
+                                                TWL4030_INTBR_PMBR1);
 
         ret = platform_device_add(sdp3430_snd_device);
         if (ret)