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| author |   Evan Green <evgreen@chromium.org> | 2019-06-27 13:44:45 -0700 |
|---|---|---|
| committer |   Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2019-07-01 15:39:11 +0200 |
| commit | 8c3166e17cf10161d2871dfb1d017287c7b79ff1 (patch) | |
| tree | d5a236fb41c68187aac195ba0c4033bd8a428713 /drivers/mfd | |
| parent | platform/chrome: lightbar: Get drvdata from parent in suspend/resume (diff) | |
| download | linux-dev-8c3166e17cf10161d2871dfb1d017287c7b79ff1.tar.xz linux-dev-8c3166e17cf10161d2871dfb1d017287c7b79ff1.zip | |
mfd / platform: cros_ec_debugfs: Expose resume result via debugfs
For ECs that support it, the EC returns the number of slp_s0
transitions and whether or not there was a timeout in the resume
response. Expose the last resume result to usermode via debugfs so
that usermode can detect and report S0ix timeouts.
Signed-off-by: Evan Green <evgreen@chromium.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/cros_ec.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c index bd2bcdd4718b..64a2d3adc729 100644 --- a/drivers/mfd/cros_ec.c +++ b/drivers/mfd/cros_ec.c @@ -110,12 +110,16 @@ static int cros_ec_sleep_event(struct cros_ec_device *ec_dev, u8 sleep_event) /* For now, report failure to transition to S0ix with a warning. */ if (ret >= 0 && ec_dev->host_sleep_v1 && - (sleep_event == HOST_SLEEP_EVENT_S0IX_RESUME)) + (sleep_event == HOST_SLEEP_EVENT_S0IX_RESUME)) { + ec_dev->last_resume_result = + buf.u.resp1.resume_response.sleep_transitions; + WARN_ONCE(buf.u.resp1.resume_response.sleep_transitions & EC_HOST_RESUME_SLEEP_TIMEOUT, "EC detected sleep transition timeout. Total slp_s0 transitions: %d", buf.u.resp1.resume_response.sleep_transitions & EC_HOST_RESUME_SLEEP_TRANSITIONS_MASK); + } return ret; } |