Clean up ADC module

ADC config structs are now chip-specific; this saves code size
(several hundred bytes on LM4, since no need for 24-entry ADC channel
to GPIO mapping table).

BUG=chrome-os-partner:15579
BRANCH=none
TEST='adc' with system on and off; ChargerCurrent should be bigger when on.

Change-Id: Ia88b3f043438bec049f2d2ad39fc42dcf86d9424
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36798

1 files changed, 15 insertions, 15 deletions

diff --git a/include/adc.h b/include/adc.h
index fe1296cc3b..646298ca76 100644
--- a/include/adc.h
+++ b/include/adc.h
@@ -9,24 +9,24 @@
 #define __CROS_EC_ADC_H
 
 #include "common.h"
-#include "board.h"
 
-/* Data structure to define ADC channels. */
-struct adc_t
-{
-	const char* name;
-	int sequencer;
-	int factor_mul;
-	int factor_div;
-	int shift;
-	int channel;
-	int flag;
-};
-
-/* Read ADC channel. */
+/**
+ * Read an ADC channel.
+ *
+ * @param ch		Channel to read
+ *
+ * @return The scaled ADC value, or ADC_READ_ERROR if error.
+ */
 int adc_read_channel(enum adc_channel ch);
 
-/* Read all ADC channels. Return non-zero on error. */
+/**
+ * Read all ADC channels.
+ *
+ * @param data		Destination array for channel data; must be
+ *			ADC_CH_COUNT elements long.
+ *
+ * @return EC_SUCCESS, or non-zero on error.
+ */
 int adc_read_all_channels(int *data);
 
 #endif  /* __CROS_EC_ADC_H */