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drm: allow drm_atomic_print_state() to accept any drm_printer

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Currently drm_atomic_print_state() internally allocates and uses a
drm_info printer. Allow it to accept any drm_printer type so that
the API can be leveraged even for taking drm snapshot.

Rename the drm_atomic_print_state() to drm_atomic_print_new_state()
so that it reflects its functionality better.

changes in v5:
 - none

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/1618606645-19695-2-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Abhinav Kumar
2021-04-16 13:57:19 -07:00
committed by Rob Clark
parent f21c8a276c
commit a4324a7a1c
4 changed files with 30 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/gpu/drm/drm_atomic.c
View File

@@ -1,6 +1,7 @@
/*
* Copyright (C) 2014 Red Hat
* Copyright (C) 2014 Intel Corp.
* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -1608,9 +1609,20 @@ commit:
}
EXPORT_SYMBOL(__drm_atomic_helper_set_config);
void drm_atomic_print_state(const struct drm_atomic_state *state)
/**
* drm_atomic_print_new_state - prints drm atomic state
* @state: atomic configuration to check
* @p: drm printer
*
* This functions prints the drm atomic state snapshot using the drm printer
* which is passed to it. This snapshot can be used for debugging purposes.
*
* Note that this function looks into the new state objects and hence its not
* safe to be used after the call to drm_atomic_helper_commit_hw_done().
*/
void drm_atomic_print_new_state(const struct drm_atomic_state *state,
struct drm_printer *p)
{
struct drm_printer p = drm_info_printer(state->dev->dev);
struct drm_plane *plane;
struct drm_plane_state *plane_state;
struct drm_crtc *crtc;
@@ -1619,17 +1631,23 @@ void drm_atomic_print_state(const struct drm_atomic_state *state)
struct drm_connector_state *connector_state;
int i;
if (!p) {
DRM_ERROR("invalid drm printer\n");
return;
}
DRM_DEBUG_ATOMIC("checking %p\n", state);
for_each_new_plane_in_state(state, plane, plane_state, i)
drm_atomic_plane_print_state(&p, plane_state);
drm_atomic_plane_print_state(p, plane_state);
for_each_new_crtc_in_state(state, crtc, crtc_state, i)
drm_atomic_crtc_print_state(&p, crtc_state);
drm_atomic_crtc_print_state(p, crtc_state);
for_each_new_connector_in_state(state, connector, connector_state, i)
drm_atomic_connector_print_state(&p, connector_state);
drm_atomic_connector_print_state(p, connector_state);
}
EXPORT_SYMBOL(drm_atomic_print_new_state);
static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p,
bool take_locks)