linux-kernel - Re: [PATCH] drm/bridge: Select DRM_KMS_HELPER for DRM_PANEL

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Message-ID: <87wmpzq0bp.fsf@intel.com>
Date: Mon, 18 Mar 2024 12:52:10 +0200
From: Jani Nikula <jani.nikula@...ux.intel.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, Andrzej Hajda
 <andrzej.hajda@...el.com>, Robert Foss <rfoss@...nel.org>, Laurent
 Pinchart <Laurent.pinchart@...asonboard.com>, Jonas Karlman
 <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, Maarten
 Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
 <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David
 Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, Luca Weiss
 <luca.weiss@...rphone.com>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/bridge: Select DRM_KMS_HELPER for DRM_PANEL_BRIDGE

On Mon, 18 Mar 2024, Neil Armstrong <neil.armstrong@...aro.org> wrote:
> Hi,
>
> On Thu, 11 Jan 2024 13:38:04 +0100, Luca Weiss wrote:
>> Since the kconfig symbol of DRM_PANEL_BRIDGE is only adding
>> bridge/panel.o to drm_kms_helper object, we need to select
>> DRM_KMS_HELPER to make sure the file is actually getting built.
>> 
>> Otherwise with certain defconfigs e.g. devm_drm_of_get_bridge will not
>> be properly available:
>> 
>> [...]
>
> Thanks, Applied to https://gitlab.freedesktop.org/drm/misc/kernel.git (drm-misc-fixes)
>
> [1/1] drm/bridge: Select DRM_KMS_HELPER for DRM_PANEL_BRIDGE
>       https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/e3f18b0dd1db242791afbc3bd173026163ce0ccc

With my kernel config, e3f18b0dd1db ("drm/bridge: Select DRM_KMS_HELPER
for DRM_PANEL_BRIDGE") leads to:

WARNING: unmet direct dependencies detected for DRM_KMS_HELPER
  Depends on [m]: HAS_IOMEM [=y] && DRM [=m]
  Selected by [y]:
  - DRM_PANEL_BRIDGE [=y] && HAS_IOMEM [=y] && DRM_BRIDGE [=y]
  Selected by [m]:
  - DRM [=m] && HAS_IOMEM [=y] && (AGP [=y] || AGP [=y]=n) && !EMULATED_CMPXCHG && HAS_DMA [=y] && DRM_FBDEV_EMULATION [=y]
  - DRM_MIPI_DBI [=m] && HAS_IOMEM [=y] && DRM [=m]
  - DRM_KUNIT_TEST [=m] && HAS_IOMEM [=y] && DRM [=m] && KUNIT [=y] && MMU [=y]
  - DRM_RADEON [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y] && (AGP [=y] || !AGP [=y])
  - DRM_AMDGPU [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y] && !UML
  - DRM_NOUVEAU [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y]
  - DRM_I915 [=m] && HAS_IOMEM [=y] && DRM [=m] && X86 [=y] && PCI [=y] && !PREEMPT_RT [=n]
  - DRM_XE [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y] && (m && MODULES [=y] || y && KUNIT [=y]=y) && 64BIT [=y]
  - DRM_VKMS [=m] && HAS_IOMEM [=y] && DRM [=m] && MMU [=y]
  - DRM_VMWGFX [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y] && (X86 [=y] || ARM64)
  - DRM_GMA500 [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && X86 [=y] && MMU [=y]
  - DRM_UDL [=m] && HAS_IOMEM [=y] && DRM [=m] && USB [=m] && USB_ARCH_HAS_HCD [=y] && MMU [=y]
  - DRM_AST [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y]
  - DRM_MGAG200 [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y]
  - DRM_QXL [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y]
  - DRM_VIRTIO_GPU [=m] && HAS_IOMEM [=y] && DRM [=m] && VIRTIO_MENU [=y] && MMU [=y]
  - DRM_BOCHS [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y]
  - DRM_CIRRUS_QEMU [=m] && HAS_IOMEM [=y] && DRM [=m] && PCI [=y] && MMU [=y]
  - DRM_GM12U320 [=m] && HAS_IOMEM [=y] && DRM [=m] && USB [=m] && MMU [=y]
  - DRM_PANEL_MIPI_DBI [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - DRM_SIMPLEDRM [=m] && HAS_IOMEM [=y] && DRM [=m] && MMU [=y]
  - TINYDRM_HX8357D [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_ILI9163 [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_ILI9225 [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_ILI9341 [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_ILI9486 [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_MI0283QT [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_REPAPER [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_ST7586 [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - TINYDRM_ST7735R [=m] && HAS_IOMEM [=y] && DRM [=m] && SPI [=y]
  - DRM_XEN_FRONTEND [=m] && HAS_IOMEM [=y] && XEN [=y] && DRM [=m]
  - DRM_VBOXVIDEO [=m] && HAS_IOMEM [=y] && DRM [=m] && X86 [=y] && PCI [=y]
  - DRM_GUD [=m] && HAS_IOMEM [=y] && DRM [=m] && USB [=m] && MMU [=y]
  - DRM_SSD130X [=m] && HAS_IOMEM [=y] && DRM [=m] && MMU [=y]
  - DRM_ANALOGIX_ANX78XX [=m] && HAS_IOMEM [=y] && DRM [=m] && DRM_BRIDGE [=y]


BR,
Jani.

-- 
Jani Nikula, Intel