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| author |   Alexander Usyskin <alexander.usyskin@intel.com> | 2019-11-07 12:44:45 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-07 09:37:27 +0100 |
| commit | 52f6efdf80924449023c559c3134258c2c6da43b (patch) | |
| tree | ccd825fd49ac508daeb552315eaddf741b43f74d /drivers/misc/mei/mei_dev.h | |
| parent | mei: abstract fw status register read. (diff) | |
| download | linux-dev-52f6efdf80924449023c559c3134258c2c6da43b.tar.xz linux-dev-52f6efdf80924449023c559c3134258c2c6da43b.zip | |
mei: add trc detection register to sysfs
The glitch detection HW (TRC) save it status information into
TRC status register.
Make it available to user-space via read-only sysfs file.
The TRC register is availab for PCH15 gen and newer, for older
platforms reading the sysfs file will fail with EOPNOTSUPP.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20191107104445.19101-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index e0ac660c96e7..76f8ff5ff974 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -260,6 +260,7 @@ struct mei_cl { * @hw_config : configure hw * * @fw_status : get fw status registers + * @trc_status : get trc status register * @pg_state : power gating state of the device * @pg_in_transition : is device now in pg transition * @pg_is_enabled : is power gating enabled @@ -290,6 +291,8 @@ struct mei_hw_ops { int (*hw_config)(struct mei_device *dev); int (*fw_status)(struct mei_device *dev, struct mei_fw_status *fw_sts); + int (*trc_status)(struct mei_device *dev, u32 *trc); + enum mei_pg_state (*pg_state)(struct mei_device *dev); bool (*pg_in_transition)(struct mei_device *dev); bool (*pg_is_enabled)(struct mei_device *dev); @@ -711,6 +714,13 @@ static inline int mei_count_full_read_slots(struct mei_device *dev) return dev->ops->rdbuf_full_slots(dev); } +static inline int mei_trc_status(struct mei_device *dev, u32 *trc) +{ + if (dev->ops->trc_status) + return dev->ops->trc_status(dev, trc); + return -EOPNOTSUPP; +} + static inline int mei_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status) { |