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[10/46] fbdev/cobalt-lcd: Initialize fb_ops to fbdev I/O-memory helpers

Message ID 20230927074722.6197-11-tzimmermann@suse.de
State New
Headers show
Series fbdev: Init fb_ops with helpers for I/O memory | expand

Commit Message

Thomas Zimmermann Sept. 27, 2023, 7:26 a.m. UTC 
Initialize the instance of struct fb_ops with fbdev initializer
macros for framebuffers in I/O address space. Set the read/write,
draw and mmap callbacks to the correct implementation and avoid
implicit defaults. Also select the necessary I/O helpers in Kconfig.

Fbdev drivers sometimes rely on the callbacks being NULL for a
default implementation to be invoked; hence requiring the I/O
helpers to be built in any case. Setting all callbacks in all
drivers explicitly will allow to make the I/O helpers optional.
This benefits systems that do not use these functions.

No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/video/fbdev/Kconfig        | 1 +
 drivers/video/fbdev/cobalt_lcdfb.c | 2 ++
 2 files changed, 3 insertions(+)
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Patch

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 06d20787da8b8..5f8ba796aa382 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -1752,6 +1752,7 @@  config FB_GOLDFISH
 config FB_COBALT
 	tristate "Cobalt server LCD frame buffer support"
 	depends on FB && MIPS_COBALT
+	select FB_IOMEM_HELPERS
 
 config FB_SH7760
 	bool "SH7760/SH7763/SH7720/SH7721 LCDC support"
diff --git a/drivers/video/fbdev/cobalt_lcdfb.c b/drivers/video/fbdev/cobalt_lcdfb.c
index b94e7c97264cb..c2b8f894799ca 100644
--- a/drivers/video/fbdev/cobalt_lcdfb.c
+++ b/drivers/video/fbdev/cobalt_lcdfb.c
@@ -280,7 +280,9 @@  static const struct fb_ops cobalt_lcd_fbops = {
 	.fb_read	= cobalt_lcdfb_read,
 	.fb_write	= cobalt_lcdfb_write,
 	.fb_blank	= cobalt_lcdfb_blank,
+	__FB_DEFAULT_IOMEM_OPS_DRAW,
 	.fb_cursor	= cobalt_lcdfb_cursor,
+	__FB_DEFAULT_IOMEM_OPS_MMAP,
 };
 
 static int cobalt_lcdfb_probe(struct platform_device *dev)