This patchset adds a debugfs file that prints info about the
framebuffers.
This version has a lot of changes since the previous version. The
previous version was inspired by drm_fb_cma_debugfs_show(), but this one
strictly follows the style of drm_state_info(). This means that the
added drm_framebuffer_print_info() could also be used in
drm_atomic_plane_print_state(). In order to do that I had to add a way
to vary indentation to fit both use cases.
I've also converted the cma helper so I could add the driver callback.
If this approach turns out to be the way to go, I'll convert hdlcd and
tilcdc as well in the next version so I can remove
drm_fb_cma_debugfs_show().
This is how it looks:
$ sudo cat /sys/kernel/debug/dri/0/framebuffer
framebuffer[33]:
refcount=3
format=RG16 little-endian (0x36314752)
modifier=0x0
size=320x240
layers:
size[0]=320x240
pitch[0]=640
offset[0]=0
obj[0]:
name=0
refcount=1
start=00010000
size=155648
imported=no
paddr=0x17c80000
vaddr=d7c80000
$ sudo cat /sys/kernel/debug/dri/0/state
plane[28]: plane-0
crtc=crtc-0
fb=33
refcount=3
format=RG16 little-endian (0x36314752)
modifier=0x0
size=320x240
layers:
size[0]=320x240
pitch[0]=640
offset[0]=0
obj[0]:
name=0
refcount=1
start=00010000
size=155648
imported=no
paddr=0x17c80000
vaddr=d7c80000
crtc-pos=320x240+0+0
src-pos=320.000000x240.000000+0.000000+0.000000
rotation=1
crtc[29]: crtc-0
<...>
Noralf Trønnes (8):
drm/vma-manager: drm_vma_node_start() constify argument
drm/framebuffer: drm_framebuffer_read_refcount() constify argument
drm/gem: Remove trailing whitespace
drm/print: Add drm_printf_indent()
drm/framebuffer: Add framebuffer debugfs file
drm/atomic: Use drm_framebuffer_print_info()
drm/cma-helper: Add drm_gem_cma_print_info()
drm/tinydrm: Use drm_gem_cma_print_info()
drivers/gpu/drm/drm_atomic.c | 18 ++---------
drivers/gpu/drm/drm_debugfs.c | 6 ++++
drivers/gpu/drm/drm_framebuffer.c | 59 ++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_gem.c | 21 +++++++++++--
drivers/gpu/drm/drm_gem_cma_helper.c | 19 ++++++++++++
drivers/gpu/drm/drm_internal.h | 7 +++++
drivers/gpu/drm/drm_print.c | 21 +++++++++++++
drivers/gpu/drm/tinydrm/mipi-dbi.c | 8 +----
include/drm/drm_drv.h | 11 +++++++
include/drm/drm_framebuffer.h | 2 +-
include/drm/drm_gem_cma_helper.h | 5 ++-
include/drm/drm_print.h | 2 ++
include/drm/drm_vma_manager.h | 2 +-
include/drm/tinydrm/tinydrm.h | 1 +
14 files changed, 155 insertions(+), 27 deletions(-)
--
2.14.2
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