Randall Spangler a752e1f5d1 link: fix race condition enabling keyboard interrupt ...

Previously, an edge on a keyboard row could be missed if it occurred
after the last scan, but before interrupts are enabled.  Now we
explicitly check if any keys are down before waiting for an interrupt,
and if any are, we simply don't wait to scan.

BUG=chrome-os-partner:7484
BRANCH=link
TEST=the race condition's really tricky to hit

The best we can do for testing is to ensure that we ARE sleeping in
the normal case where no keys are held down.  For that, don't press
any keys, and run 'taskinfo' from the EC console twice about 10 sec
apart.  Both printouts should have virtually identical times for the
KEYSCAN task.

Change-Id: I4e0ef18a2d71d0a5d3655742bd49fc15afc4aaed
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/34709
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Yung-Chieh Lo <yjlou@chromium.org>

2012-10-05 04:26:19 -07:00

..

openocd

Remove firmware B

2012-07-17 13:11:44 -07:00

adc.c

Enable PLL only briefly during ADC init

2012-08-09 14:38:16 -07:00

build.mk

lm4: Stub chip-related functions in keyboard module

2012-06-20 06:27:25 -07:00

chip_temp_sensor.c

Initialize temperature reading buffer to sane values

2012-08-13 23:33:44 -07:00

clock.c

Enable PLL only briefly during ADC init

2012-08-09 14:38:16 -07:00

config.h

Enable FPU support for Link EC

2012-10-02 10:52:54 -07:00

eeprom.c

Revise EEPROM init and write routines

2012-06-22 11:34:16 -07:00

flash.c

Rename EC_FLASH_PROTECT_RW_* flags to EC_FLASH_PROTECT_ALL_*.

2012-08-25 15:12:41 -07:00

gpio.c

Allow GPIOs to be set up later

2012-08-27 12:16:10 -07:00

hwtimer.c

add a function to fast forward system timer

2012-08-06 18:55:00 -07:00

i2c.c

Prevent I2C interrupts from consuming pending task events

2012-09-21 16:48:54 -07:00

jtag.c

Add constants for all GPIOs.

2012-01-11 16:30:56 -08:00

keyboard_scan_stub.c

lm4: Stub chip-related functions in keyboard module

2012-06-20 06:27:25 -07:00

keyboard_scan_stub.h

lm4: Stub chip-related functions in keyboard module

2012-06-20 06:27:25 -07:00

keyboard_scan.c

link: fix race condition enabling keyboard interrupt

2012-10-05 04:26:19 -07:00

lm4_adc.h

Fix a bug that ADC input is not correctly configured.

2012-02-02 17:10:40 +08:00

lpc.c

Improve handling of bursts of port 80 writes

2012-09-17 18:06:33 -07:00

mock_flash.c

Fix flash_overwrite unit test

2012-08-19 09:56:32 -07:00

mock_gpio.c

Add a test of checking power button handling

2012-06-25 07:15:52 -07:00

mock_keyboard_scan_stub.c

Add a test of checking keyboard de-ghosting

2012-06-25 08:39:13 -07:00

mock_lpc.c

host_command: Add send_result() to the arg structure

2012-07-23 13:23:06 -07:00

mock_pwm.c

Fix unit test compilation error

2012-06-25 08:18:36 -07:00

onewire.c

Added HOOK_INIT for driver module inits

2012-04-19 13:08:58 -07:00

peci.c

Initialize temperature reading buffer to sane values

2012-08-13 23:33:44 -07:00

power_button.c

Re-enable keyboard scanning at end of debounce interval

2012-09-28 11:31:16 -07:00

pwm.c

Support up to 24 thermal sensors

2012-07-22 13:17:02 -07:00

registers.h

Reset LPC from-host channel status on LPC reset

2012-09-17 12:16:01 -07:00

spi.c

Add basic SPI support to link

2012-05-30 13:12:34 -07:00

system.c

stm32: Store VbNvContext in backup registers

2012-09-05 16:00:28 -07:00

uart.c

Clear UART FIFO when initializing to prevent reading garbage

2012-07-09 19:50:22 -07:00

watchdog.c

Move watchdog_trace() into the generic watchdog file

2012-06-15 13:39:22 -07:00