diff options
| author | Rob Barnes <robbarnes@google.com> | 2023-01-04 04:15:23 +0300 |
|---|---|---|
| committer | Tzung-Bi Shih <tzungbi@kernel.org> | 2023-01-06 06:48:06 +0300 |
| commit | d90fa2c64d59f5f151beeef5dbc599784b3391ca (patch) | |
| tree | 04aad7a5d0419db2c0ff6bd0db0aaffc1d74c6e6 /include/linux | |
| parent | aaab5af4b226dce54cb8675dac1ffa359ec90872 (diff) | |
| download | linux-d90fa2c64d59f5f151beeef5dbc599784b3391ca.tar.xz | |
platform/chrome: cros_ec: Poll EC log on EC panic
Add handler for CrOS EC panic events. When a panic is reported,
immediately poll for EC log.
This should result in the log leading to the EC panic being
preserved.
ACPI_NOTIFY_CROS_EC_PANIC is defined in coreboot at
https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/src/ec/google/chromeec/acpi/ec.asl
Signed-off-by: Rob Barnes <robbarnes@google.com>
Reviewed-by: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20230104011524.369764-2-robbarnes@google.com
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/platform_data/cros_ec_proto.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h index e43107e0bee1..7fb2196f99b0 100644 --- a/include/linux/platform_data/cros_ec_proto.h +++ b/include/linux/platform_data/cros_ec_proto.h @@ -42,6 +42,13 @@ #define EC_MAX_RESPONSE_OVERHEAD 32 /* + * EC panic is not covered by the standard (0-F) ACPI notify values. + * Arbitrarily choosing B0 to notify ec panic, which is in the 84-BF + * device specific ACPI notify range. + */ +#define ACPI_NOTIFY_CROS_EC_PANIC 0xB0 + +/* * Command interface between EC and AP, for LPC, I2C and SPI interfaces. */ enum { @@ -176,6 +183,8 @@ struct cros_ec_device { /* The platform devices used by the mfd driver */ struct platform_device *ec; struct platform_device *pd; + + struct blocking_notifier_head panic_notifier; }; /** |