From: Tomas Winkler <[email protected]> Add pxp mode devstate to debugfs to monitor pxp state machine progress. This is useful to debug issues in scenarios in which the pxp state needs to be re-initialized, like during power transitions such as suspend/resume. With this debugfs the state could be monitored to ensure that pxp is in the ready state.
CC: Vitaly Lubart <[email protected]> Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Alexander Usyskin <[email protected]> --- drivers/misc/mei/debugfs.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c index 1ce61e9e24fc..4074fec866a6 100644 --- a/drivers/misc/mei/debugfs.c +++ b/drivers/misc/mei/debugfs.c @@ -86,6 +86,20 @@ static int mei_dbgfs_active_show(struct seq_file *m, void *unused) } DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_active); +static const char *mei_dev_pxp_mode_str(enum mei_dev_pxp_mode state) +{ +#define MEI_PXP_MODE(state) case MEI_DEV_PXP_##state: return #state + switch (state) { + MEI_PXP_MODE(DEFAULT); + MEI_PXP_MODE(INIT); + MEI_PXP_MODE(SETUP); + MEI_PXP_MODE(READY); + default: + return "unknown"; + } +#undef MEI_PXP_MODE +} + static int mei_dbgfs_devstate_show(struct seq_file *m, void *unused) { struct mei_device *dev = m->private; @@ -112,6 +126,9 @@ static int mei_dbgfs_devstate_show(struct seq_file *m, void *unused) seq_printf(m, "pg: %s, %s\n", mei_pg_is_enabled(dev) ? "ENABLED" : "DISABLED", mei_pg_state_str(mei_pg_state(dev))); + + seq_printf(m, "pxp: %s\n", mei_dev_pxp_mode_str(dev->pxp_mode)); + return 0; } DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_devstate); -- 2.34.1
