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samus: Add battery_is_connected check

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This is so the 30-second wait when no battery is installed can be skipped.

Note that if we ever decide to monitor the battery temp through the BAT_TEMP
line, we'll have to rethink how battery_is_connected() is implemented, since
we can't reliably treat that GPIO as both digital and analog simultaneously.

BUG=chrome-os-partner:22870
BRANCH=none
TEST=manual

  cd src/platform/ec
  make BOARD=samus
  make runtests

Change-Id: Ifea952c8f99b2b40c2fab382e949958a2f71d157
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/171796
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Bill Richardson
2013-10-04 10:25:39 -07:00
committed by chrome-internal-fetch
parent 9af47b787c
commit e98db03d3b
2 changed files with 11 additions and 0 deletions
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9
board/samus/board.c
View File

@@ -74,6 +74,7 @@ const struct gpio_info gpio_list[] = {
{"USB1_STATUS_L", LM4_GPIO_E, (1<<6), GPIO_INPUT, NULL},
{"USB2_OC_L", LM4_GPIO_E, (1<<0), GPIO_INPUT, NULL},
{"USB2_STATUS_L", LM4_GPIO_D, (1<<7), GPIO_INPUT, NULL},
{"BAT_DETECT_L", LM4_GPIO_B, (1<<4), GPIO_INPUT, NULL},
/* Not yet sure if this will need to be handled as an interrupt */
{"CAPSENSE_INT_L", LM4_GPIO_N, (1<<0), GPIO_INPUT, NULL},
@@ -227,3 +228,11 @@ struct keyboard_scan_config keyscan_config = {
0xa4, 0xff, 0xf6, 0x55, 0xfa, 0xc8 /* full set */
},
};
/**
* Physical detection of battery connection.
*/
int battery_is_connected(void)
{
return (gpio_get_level(GPIO_BAT_DETECT_L) == 0);
}

2
board/samus/board.h
View File

@@ -26,6 +26,7 @@
#define CONFIG_POWER_BUTTON
#define CONFIG_POWER_BUTTON_X86
#define CONFIG_BATTERY_CHECK_CONNECTED
#define CONFIG_BATTERY_LINK
#define CONFIG_BATTERY_SMART
#define CONFIG_BACKLIGHT_LID
@@ -108,6 +109,7 @@ enum gpio_signal {
GPIO_USB1_STATUS_L, /* USB charger port 1 status output */
GPIO_USB2_OC_L, /* USB port overcurrent warning */
GPIO_USB2_STATUS_L, /* USB charger port 2 status output */
GPIO_BAT_DETECT_L, /* Battery detect from BAT_TEMP */
GPIO_CAPSENSE_INT_L, /* Capsense interrupt (through EC_WAKE_L) */
/* Outputs */