It's potentially useful information when diagnosing error/warn IRQs, so dump it to dmesg with a drm_info_printer. Hide this extra debug dumping behind another komeda_dev->err_verbosity bit.
Note that there's not much sense in dumping it for INFO events, since the VSYNC event will swamp the log.
Signed-off-by: Mihail Atanassov mihail.atanassov@arm.com --- drivers/gpu/drm/arm/display/komeda/komeda_dev.h | 5 ++++- drivers/gpu/drm/arm/display/komeda/komeda_event.c | 8 +++++++- 2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h index 831c375180f8..4809000c1efb 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h @@ -205,11 +205,14 @@ struct komeda_dev { /** * @err_verbosity: bitmask for how much extra info to print on error * - * See KOMEDA_DEV_* macros for details. + * See KOMEDA_DEV_* macros for details. Low byte contains the debug + * level categories, the high byte contains extra debug options. */ u16 err_verbosity; /* Print a single line per error per frame with error events. */ #define KOMEDA_DEV_PRINT_ERR_EVENTS BIT(0) + /* Dump DRM state on an error or warning event. */ +#define KOMEDA_DEV_PRINT_DUMP_STATE_ON_EVENT BIT(8) };
static inline bool diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_event.c b/drivers/gpu/drm/arm/display/komeda/komeda_event.c index 575ed4df74ed..5da61e7d75d5 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_event.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_event.c @@ -4,6 +4,7 @@ * Author: James.Qian.Wang james.qian.wang@arm.com * */ +#include <drm/drm_atomic.h> #include <drm/drm_print.h>
#include "komeda_dev.h" @@ -113,6 +114,7 @@ void komeda_print_events(struct komeda_events *evts, struct drm_device *dev) static bool en_print = true; struct komeda_dev *mdev = dev->dev_private; u16 const err_verbosity = mdev->err_verbosity; + u64 evts_mask = evts->global | evts->pipes[0] | evts->pipes[1];
/* reduce the same msg print, only print the first evt for one frame */ if (evts->global || is_new_frame(evts)) @@ -123,9 +125,10 @@ void komeda_print_events(struct komeda_events *evts, struct drm_device *dev) if (err_verbosity & KOMEDA_DEV_PRINT_ERR_EVENTS) print_evts |= KOMEDA_ERR_EVENTS;
- if ((evts->global | evts->pipes[0] | evts->pipes[1]) & print_evts) { + if (evts_mask & print_evts) { char msg[256]; struct komeda_str str; + struct drm_printer p = drm_info_printer(dev->dev);
str.str = msg; str.sz = sizeof(msg); @@ -139,6 +142,9 @@ void komeda_print_events(struct komeda_events *evts, struct drm_device *dev) evt_str(&str, evts->pipes[1]);
DRM_ERROR("err detect: %s\n", msg); + if ((err_verbosity & KOMEDA_DEV_PRINT_DUMP_STATE_ON_EVENT) + && (evts_mask & (KOMEDA_ERR_EVENTS | KOMEDA_WARN_EVENTS))) + drm_state_dump(dev, &p);
en_print = false; }