Tidy ADC channel definitions

We moved a while ago to a table of ADC channels, so having a
meaningless constant defined in board.h is more harmful than helpful.

BUG=none
TEST=build link, bds

Change-Id: I651a609c9ed13f879bb943c90731275407d77e50
Signed-off-by: Randall Spangler <rspangler@chromium.org>

board/bds/board.c

@@ -29,9 +29,12 @@ const struct adc_t adc_channels[ADC_CH_COUNT] =
 
 	/* Charger current is mapped from 0~4000mA to 0~1.6V.
 	 * And ADC maps 0~3.3V to ADC_READ_MAX.
+	 *
+	 * Note that on BDS, this is really just the turn pot on the Badger
+	 * board, but that's good enough for debugging the ADC.
 	 */
 	{"ChargerCurrent", LM4_ADC_SEQ1, 33 * 4000, ADC_READ_MAX * 16, 0,
-	 LM4_AIN(ADC_IN0), 0x06 /* IE0 | END0 */},
+	 LM4_AIN(0), 0x06 /* IE0 | END0 */},
 };
 
 

board/bds/board.h

@@ -45,10 +45,6 @@
 /* LPC COMx I/O address (in x86 I/O address space) */
 #define LPC_COMX_ADDR 0x2f8  /* COM2, since superIO uses COM1 */
 
-/* ADC inputs */
-/* TODO: really just need a lookup table for channels to inputs */
-#define ADC_IN0 0  /* Turn POT on badger board */
-
 enum adc_channel
 {
 	/* EC internal die temperature in degrees K. */

board/link/board.c

@@ -118,7 +118,7 @@ const struct adc_t adc_channels[ADC_CH_COUNT] =
 	 * And ADC maps 0~3.3V to ADC_READ_MAX.
 	 */
 	{"ChargerCurrent", LM4_ADC_SEQ1, 33 * 4000, ADC_READ_MAX * 16, 0,
-	 LM4_AIN(ADC_IN0), 0x06 /* IE0 | END0 */},
+	 LM4_AIN(11), 0x06 /* IE0 | END0 */},
 };
 
 void configure_board(void)

board/link/board.h

@@ -55,10 +55,6 @@
 /* LPC COMx I/O address (in x86 I/O address space) */
 #define LPC_COMX_ADDR 0x3f8  /* COM1 */
 
-/* ADC inputs */
-/* TODO: assign real ADC inputs */
-#define ADC_IN0 11  /* Charger current */
-
 enum adc_channel
 {
 	/* EC internal die temperature in degrees K. */