diff options
Diffstat (limited to 'driver/battery/bq4050.c')
| -rw-r--r-- | driver/battery/bq4050.c | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/driver/battery/bq4050.c b/driver/battery/bq4050.c deleted file mode 100644 index 684ade47e6..0000000000 --- a/driver/battery/bq4050.c +++ /dev/null @@ -1,39 +0,0 @@ -/* Copyright 2018 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * Smart battery driver for TI BQ4050 family, including BQ40Z50 (and -R1, -R2), - * BQ40Z552, and BQ40Z60. - */ - -#include "battery_smart.h" -#include "util.h" - -#include <stdint.h> - -int battery_bq4050_imbalance_mv(void) -{ - /* - * The BQ4050 family can manage up to four cells. In testing it always - * returns a voltage for each cell, regardless of the number of cells - * actually installed in the pack. Unpopulated cells read exactly zero. - */ - static const uint8_t cell_voltage_address[4] = { - 0x3c, 0x3d, 0x3e, 0x3f - }; - int i, res, cell_voltage; - int n_cells = 0; - int max_voltage = 0; - int min_voltage = 0xffff; - - for (i = 0; i != ARRAY_SIZE(cell_voltage_address); ++i) { - res = sb_read(cell_voltage_address[i], &cell_voltage); - if (res == EC_SUCCESS && cell_voltage != 0) { - n_cells++; - max_voltage = MAX(max_voltage, cell_voltage); - min_voltage = MIN(min_voltage, cell_voltage); - } - } - return (n_cells == 0) ? 0 : max_voltage - min_voltage; -} - |