[PATCH v5 4/4] drm: Make FB_CORE to be selected if DRM fbdev emulation is enabled

From: Javier Martinez Canillas
Date: Fri Jul 14 2023 - 13:18:26 EST


Now that fbdev core has been split in FB_CORE and FB, make the DRM symbol
to select the FB_CORE option if the DRM fbdev emulation layer is enabled.

This allows to disable the CONFIG_FB option if is not needed, which will
avoid the need to explicitly disable each of the legacy fbdev drivers.

Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
---

(no changes since v3)

Changes in v3:
- Make the DRM symbol to select FB_CORE if DRM_FBDEV_EMULATION is
enabled (Arnd Bergmann).
- Also make DRM select FB_SYS_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
- Make DRM_FBDEV_EMULATION to depend on DRM instead of DRM_KMS_HELPER.

Changes in v2:
- Make CONFIG_DRM_FBDEV_EMULATION to select FB_CORE (Thomas Zimmermann).

drivers/gpu/drm/Kconfig | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 22c1ba9ea28c..4f209e5c958c 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -9,6 +9,9 @@ menuconfig DRM
tristate "Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)"
depends on (AGP || AGP=n) && !EMULATED_CMPXCHG && HAS_DMA
select DRM_PANEL_ORIENTATION_QUIRKS
+ select DRM_KMS_HELPER if DRM_FBDEV_EMULATION
+ select FB_CORE if DRM_FBDEV_EMULATION
+ select FB_SYS_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
select HDMI
select I2C
select DMA_SHARED_BUFFER
@@ -96,7 +99,6 @@ config DRM_KUNIT_TEST
config DRM_KMS_HELPER
tristate
depends on DRM
- select FB_SYS_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
help
CRTC helpers for KMS drivers.

@@ -132,8 +134,7 @@ config DRM_DEBUG_MODESET_LOCK

config DRM_FBDEV_EMULATION
bool "Enable legacy fbdev support for your modesetting driver"
- depends on DRM_KMS_HELPER
- depends on FB=y || FB=DRM_KMS_HELPER
+ depends on DRM
select FRAMEBUFFER_CONSOLE if !EXPERT
select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE
default y
--
2.41.0