Rpi5: Waveshare display mipi-dbi-spi overlay

[mcpat]

Hi,

I try to get my waveshare display running with latest rasbian on my rpi5. Compilation works and everything is working on HDMI, but I don't have any idea how to get my display working.

Acc. to this link, I have this config.txt parts

# Enable DRM VC4 V3D driver
dtoverlay=vc4-kms-v3d
max_framebuffers=2

# waveshare 1.3in - 240x240pixel - SKU19650
dtoverlay=mipi-dbi-spi,speed=32000000
dtparam=compatible=wavesku19650\0panel-mipi-dbi-spi
dtparam=write-only,cpha,cpol
dtparam=width=240,height=240,width-mm=23,height-mm=23
dtparam=reset-gpio=23,dc-gpio=25,backlight-gpio=24

I can see the console on the display, and if I start emulationstation nothing happens on the display. HDMI is working well...

I tried to compile my own mesa and drm acc. to link and patched it acc. Link

diff --git a/src/gallium/targets/dri/meson.build b/src/gallium/targets/dri/meson.build
index fbec1da957b..59daf3b6fb6 100644
--- a/src/gallium/targets/dri/meson.build
+++ b/src/gallium/targets/dri/meson.build
@@ -68,6 +68,9 @@ libgallium_dri = shared_library(
 
 foreach d : [[with_gallium_kmsro, [
                'armada-drm_dri.so',
+               'drm-rp1-dpi_dri.so',
+               'drm-rp1-dsi_dri.so',
+               'drm-rp1-vec_dri.so',
                'exynos_dri.so',
                'hx8357d_dri.so',
                'ili9225_dri.so',
diff --git a/src/gallium/targets/dri/target.c b/src/gallium/targets/dri/target.c
index d506869cbb4..ecb25edd03b 100644
--- a/src/gallium/targets/dri/target.c
+++ b/src/gallium/targets/dri/target.c
@@ -98,6 +98,9 @@ DEFINE_LOADER_DRM_ENTRYPOINT(tegra);
 
 #if defined(GALLIUM_KMSRO)
 DEFINE_LOADER_DRM_ENTRYPOINT(armada_drm)
+DEFINE_LOADER_DRM_ENTRYPOINT(drm_rp1_dpi)
+DEFINE_LOADER_DRM_ENTRYPOINT(drm_rp1_dsi)
+DEFINE_LOADER_DRM_ENTRYPOINT(drm_rp1_vec)
 DEFINE_LOADER_DRM_ENTRYPOINT(exynos)
 DEFINE_LOADER_DRM_ENTRYPOINT(hx8357d)
 DEFINE_LOADER_DRM_ENTRYPOINT(ili9225)

What I see with command drmdevice:

--- Checking the number of DRM device available ---
--- Devices reported 3 ---
--- Retrieving devices information (PCI device revision is ignored) ---
device[0]
+-> available_nodes 0x01
+-> nodes
|   +-> nodes[0] /dev/dri/card2
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/pcie@120000/rp1/spi@50000/panel@0
+-> deviceinfo
    +-> platform
        +-> compatible
                    wavesku19650
                    panel-mipi-dbi-spi

--- Opening device node /dev/dri/card2 ---
--- Retrieving device info, for node /dev/dri/card2 ---
device[0]
+-> available_nodes 0x01
+-> nodes
|   +-> nodes[0] /dev/dri/card2
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/pcie@120000/rp1/spi@50000/panel@0
+-> deviceinfo
    +-> platform
        +-> compatible
                    wavesku19650
                    panel-mipi-dbi-spi

As written, I hope someone can help here how to get Retropie running on this display...

[mitu]

I can see the console on the display, and if I start emulationstation nothing happens on the display. HDMI is working well...

Not sure what do you expect to show up on the display... ? Though 240x240 is a bit too small for EmulationStation/games to work, I assume you want to use it as a secondary display ?

AFAIK this won't work without a desktop environment (Wayland/Xorg), where you choose how the 2nd display is working (mirror, extend, etc.).

[mcpat]

@mitu It's a fun project. I 3d printed a small tv, and want there the output. I know it's very small, but would be great if it works. So you think it only works with desktop (wayland)? No chance to get in running without desktop? I started retroarch from command line without any parameter, this shows something on the display, but too small to see what. So why doesn't emulationstation use this screen? I have this setup running on a rpi zero 2w with fbcp and this is running.

[mitu]

@mcpat said in Rpi5: Waveshare display mipi-dbi-spi overlay:

So you think it only works with desktop (wayland)? No chance to get in running without desktop?

Only if you want to use both displays at the same time. You can disable the HDMI port and use only the waveshare one - it should be the main display in this case.

[mcpat]

@mitu ok, but you mean with desktop, right? Not in command line?

[mitu]

@mcpat said in Rpi5: Waveshare display mipi-dbi-spi overlay:

@mitu ok, but you mean with desktop, right? Not in command line?

If you disable the HDMI, then it won't matter whether if you have a desktop or not available - there's just 1 single/main display.

[mcpat]

@mitu if I disable in 'config.txt'

#dtoverlay=vc4-kms-v3d

I see the command line on the display but mpv is not running anymore but emulationstation is running

root@rpi5:~#  mpv --drm-connector=help
Available connectors for card 0 (/dev/dri/card0):
  SPI-1 (connected)

root@rpi5:~# mpv  --drm-device=/dev/dri/card0 --no-audio /opt/videos/simpsons.mp4
 (+) Video --vid=1 (*) (h264 640x480 25.000fps)
     Audio --aid=1 --alang=deu (*) (aac 1ch 48000Hz)
[vo/gpu] VT_GETMODE failed: Inappropriate ioctl for device
[vo/gpu/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
[vo/gpu] Failed to create GBM surface.
[vo/gpu] Failed to setup GBM.
[vo/gpu-next] Can't handle VT release - signal already used
[vo/gpu-next/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
[vo/gpu-next] Failed to create GBM surface.
[vo/gpu-next] Failed to setup GBM.
* failed to open vchiq instance

If I disconnect HDMI cable and use in 'config.txt'

dtoverlay=vc4-kms-v3d

mpv is running but emulationstation not:

root@rpi5:~# emulationstation
* failed to open vchiq instance


root@rpi5:~#  mpv --drm-connector=help                                          
Available connectors for card 0 (/dev/dri/card2):
  SPI-1 (connected)

Available connectors for card 1 (/dev/dri/card1):
  HDMI-A-1 (disconnected)
  HDMI-A-2 (disconnected)

Available connectors for card 2 (/dev/dri/card0):
Cannot retrieve DRM resources: Operation not supported

root@rpi5:~# mpv  --drm-device=/dev/dri/card2 --no-audio /opt/videos/simpsons.mp4
 (+) Video --vid=1 (*) (h264 640x480 25.000fps)
     Audio --aid=1 --alang=deu (*) (aac 1ch 48000Hz)
[vo/gpu] VT_GETMODE failed: Inappropriate ioctl for device
[vo/gpu/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
VO: [gpu] 640x480 yuv420p
V: 00:00:07 / 00:22:15 (1%)

root@rpi5:~# mpv  --drm-device=/dev/dri/card0 --no-audio /opt/videos/simpsons.mp4
 (+) Video --vid=1 (*) (h264 640x480 25.000fps)
     Audio --aid=1 --alang=deu (*) (aac 1ch 48000Hz)
[vo/gpu] VT_GETMODE failed: Inappropriate ioctl for device
[vo/gpu/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
[vo/gpu/opengl] Cannot retrieve DRM resources: Operation not supported
[vo/gpu/opengl] Failed to create KMS.
[vo/gpu-next] Can't handle VT release - signal already used
[vo/gpu-next/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
[vo/gpu-next/opengl] Cannot retrieve DRM resources: Operation not supported
[vo/gpu-next/opengl] Failed to create KMS.
* failed to open vchiq instance

And a side effect, vlc (cvlc) is not running on display, it doesn't matter which parameter I use, and if vc4 is enabled or not...

[mitu]

Selectively enabling/disabling the KMS/DRM drivers via config.txt doesn't work for EmulationStation. If RetroPie-Setup detects no KMS active, then ES will be mis-compiled without KMS/DRM support and if you enable it back again in config.txt, the resulting binary will not work.
Don't disable the KMS overlay, you'll not have any GPU accelerated rendering.

I'm not familiar with mpv, for my needs cvlc - as distributed by RaspiOS - has worked well enough via CLI when using KMS.

[mcpat]

@mitu I didn't recompile. I compiled with active KMS/DRM. I only disabled for testing. So the behaviour describted above was always with the same file. I will try with the overlay option "nohdmi", maybe then emulationstation will also show on the display. Maybe if I move the mipi-dpi overlay before vc4 then the display is the primary?!

[mcpat]

@mitu I tried now with config.txt

dtoverlay=vc4-kms-v3d,nohdmi

and emulationstation and mpv are working on display! (Only vlc makes troubles)

root@rpi5:/opt/videos# mpv --no-audio  simpsons.mp4
 (+) Video --vid=1 (*) (h264 640x480 25.000fps)
     Audio --aid=1 --alang=deu (*) (aac 1ch 48000Hz)
[vo/gpu] VT_GETMODE failed: Inappropriate ioctl for device
[vo/gpu/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
VO: [gpu] 640x480 yuv420p
V: 00:05:28 / 00:22:15 (25%)

root@rpi5:/opt/videos#  mpv --drm-connector=help
Available connectors for card 0 (/dev/dri/card2):
  SPI-1 (connected)

Available connectors for card 1 (/dev/dri/card1):

Available connectors for card 2 (/dev/dri/card0):
Cannot retrieve DRM resources: Operation not supported

root@rpi5:/opt/videos# drmdevice
--- Checking the number of DRM device available ---
--- Devices reported 3 ---
--- Retrieving devices information (PCI device revision is ignored) ---
device[0]
+-> available_nodes 0x01
+-> nodes
|   +-> nodes[0] /dev/dri/card2
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/pcie@120000/rp1/spi@50000/panel@0
+-> deviceinfo
    +-> platform
        +-> compatible
                    wavesku19650
                    panel-mipi-dbi-spi

--- Opening device node /dev/dri/card2 ---
--- Retrieving device info, for node /dev/dri/card2 ---
device[0]
+-> available_nodes 0x01
+-> nodes
|   +-> nodes[0] /dev/dri/card2
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/pcie@120000/rp1/spi@50000/panel@0
+-> deviceinfo
    +-> platform
        +-> compatible
                    wavesku19650
                    panel-mipi-dbi-spi

device[1]
+-> available_nodes 0x01
+-> nodes
|   +-> nodes[0] /dev/dri/card1
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/gpu
+-> deviceinfo
    +-> platform
        +-> compatible
                    brcm,bcm2712-vc6

--- Opening device node /dev/dri/card1 ---
--- Retrieving device info, for node /dev/dri/card1 ---
device[1]
+-> available_nodes 0x01
+-> nodes
|   +-> nodes[0] /dev/dri/card1
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/gpu
+-> deviceinfo
    +-> platform
        +-> compatible
                    brcm,bcm2712-vc6

device[2]
+-> available_nodes 0x05
+-> nodes
|   +-> nodes[0] /dev/dri/card0
|   +-> nodes[2] /dev/dri/renderD128
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/v3d@2000000
+-> deviceinfo
    +-> platform
        +-> compatible
                    brcm,2712-v3d

--- Opening device node /dev/dri/card0 ---
--- Retrieving device info, for node /dev/dri/card0 ---
device[2]
+-> available_nodes 0x05
+-> nodes
|   +-> nodes[0] /dev/dri/card0
|   +-> nodes[2] /dev/dri/renderD128
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/v3d@2000000
+-> deviceinfo
    +-> platform
        +-> compatible
                    brcm,2712-v3d

--- Opening device node /dev/dri/renderD128 ---
--- Retrieving device info, for node /dev/dri/renderD128 ---
device[2]
+-> available_nodes 0x05
+-> nodes
|   +-> nodes[0] /dev/dri/card0
|   +-> nodes[2] /dev/dri/renderD128
+-> bustype 0002
|   +-> platform
|       +-> fullname    /axi/v3d@2000000
+-> deviceinfo
    +-> platform
        +-> compatible
                    brcm,2712-v3d