mfd: Turn on the twl4030-madc MADC clock
Without turning the MADC clock on, no MADC conversions occur.
$ cat /sys/class/hwmon/hwmon0/device/in8_input
[ 53.428436] twl4030_madc twl4030_madc: conversion timeout!
cat: read error: Resource temporarily unavailable
Signed-off-by: Kyle Manna <kyle@kylemanna.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/i2c/twl4030-madc.h b/include/linux/i2c/twl4030-madc.h
index 6427d29..530e11b 100644
--- a/include/linux/i2c/twl4030-madc.h
+++ b/include/linux/i2c/twl4030-madc.h
@@ -129,6 +129,10 @@
#define REG_BCICTL2 0x024
#define TWL4030_BCI_ITHSENS 0x007
+/* Register and bits for GPBR1 register */
+#define TWL4030_REG_GPBR1 0x0c
+#define TWL4030_GPBR1_MADC_HFCLK_EN (1 << 7)
+
struct twl4030_madc_user_parms {
int channel;
int average;