rx51_battery: Replace hardcoded channels values.

In twl4030_madc header exist defines for fixed channels + add rx51
specific channels and replace all hardcoded channels values.

Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>

drivers/power/rx51_battery.c

@@ -25,6 +25,10 @@
 #include <linux/slab.h>
 #include <linux/i2c/twl4030-madc.h>
 
+/* RX51 specific channels */
+#define TWL4030_MADC_BTEMP_RX51	TWL4030_MADC_ADCIN0
+#define TWL4030_MADC_BCI_RX51	TWL4030_MADC_ADCIN4
+
 struct rx51_device_info {
 	struct device *dev;
 	struct power_supply bat;
@@ -37,7 +41,7 @@ static int rx51_battery_read_adc(int channel)
 {
 	struct twl4030_madc_request req;
 
-	req.channels = 1 << channel;
+	req.channels = channel;
 	req.do_avg = 1;
 	req.method = TWL4030_MADC_SW1;
 	req.func_cb = NULL;
@@ -56,7 +60,7 @@ static int rx51_battery_read_adc(int channel)
  */
 static int rx51_battery_read_voltage(struct rx51_device_info *di)
 {
-	int voltage = rx51_battery_read_adc(12);
+	int voltage = rx51_battery_read_adc(TWL4030_MADC_VBAT);
 
 	if (voltage < 0)
 		return voltage;
@@ -108,7 +112,7 @@ static int rx51_battery_read_temperature(struct rx51_device_info *di)
 {
 	int min = 0;
 	int max = ARRAY_SIZE(rx51_temp_table2) - 1;
-	int raw = rx51_battery_read_adc(0);
+	int raw = rx51_battery_read_adc(TWL4030_MADC_BTEMP_RX51);
 
 	/* Zero and negative values are undefined */
 	if (raw <= 0)
@@ -142,7 +146,7 @@ static int rx51_battery_read_temperature(struct rx51_device_info *di)
  */
 static int rx51_battery_read_capacity(struct rx51_device_info *di)
 {
-	int capacity = rx51_battery_read_adc(4);
+	int capacity = rx51_battery_read_adc(TWL4030_MADC_BCI_RX51);
 
 	if (capacity < 0)
 		return capacity;