1 files changed, 30 insertions, 0 deletions

diff --git a/firmware/target/arm/imx31/gigabeat-s/power-imx31.c b/firmware/target/arm/imx31/gigabeat-s/power-imx31.c
index de7f5800e6..07e6462bfb 100644
--- a/firmware/target/arm/imx31/gigabeat-s/power-imx31.c
+++ b/firmware/target/arm/imx31/gigabeat-s/power-imx31.c
@@ -26,6 +26,9 @@
 #include "backlight-target.h"
 #include "avic-imx31.h"
 #include "mc13783.h"
+#include "i2c-imx31.h"
+
+extern struct i2c_node si4700_i2c_node;
 
 static bool charger_detect = false;
 
@@ -79,6 +82,33 @@ bool ide_powered(void)
     return (GPIO3_DR & (1 << 5)) != 0;
 }
 
+#if CONFIG_TUNER
+bool tuner_power(bool status)
+{
+    if (status)
+    {
+        /* the si4700 is the only thing connected to i2c2 so
+           we can diable the i2c module when not in use */
+        i2c_enable_node(&si4700_i2c_node, true);
+        /* enable the fm chip */
+        imx31_regmod32(&GPIO1_DR, (1 << 26), (1 << 26));
+        /* enable CLK32KMCU clock */
+        mc13783_set(MC13783_POWER_CONTROL0, MC13783_CLK32KMCUEN);
+    }
+    else
+    {
+        /* the si4700 is the only thing connected to i2c2 so
+           we can diable the i2c module when not in use */
+        i2c_enable_node(&si4700_i2c_node, false);
+        /* disable the fm chip */
+        imx31_regmod32(&GPIO1_DR, 0, (1 << 26));
+        /* disable CLK32KMCU clock */
+        mc13783_clear(MC13783_POWER_CONTROL0, MC13783_CLK32KMCUEN);
+    }
+    return true;
+}
+#endif /* #if CONFIG_TUNER */
+
 void power_off(void)
 {
     /* Cut backlight */