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fbdev/matroxfb: Initialize fb_ops to fbdev I/O-memory helpers

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Initialize each 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>
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230927074722.6197-23-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-09-27 09:26:55 +02:00
parent 68deeb025f
commit dc9c80b0c6
3 changed files with 5 additions and 3 deletions
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2
drivers/video/fbdev/Kconfig
View File

@ -903,6 +903,7 @@ config FB_MATROX
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select FB_IOMEM_FOPS
select FB_TILEBLITTING
select FB_MACMODES if PPC_PMAC
select VIDEO_NOMODESET
@ -989,6 +990,7 @@ config FB_MATROX_I2C
config FB_MATROX_MAVEN
tristate "G400 second head support"
depends on FB_MATROX_G && FB_MATROX_I2C
select FB_IOMEM_HELPERS
help
WARNING !!! This support does not work with G450 !!!

2
drivers/video/fbdev/matrox/matroxfb_base.c
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@ -1204,6 +1204,7 @@ static const struct fb_ops matroxfb_ops = {
.owner = THIS_MODULE,
.fb_open = matroxfb_open,
.fb_release = matroxfb_release,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = matroxfb_check_var,
.fb_set_par = matroxfb_set_par,
.fb_setcolreg = matroxfb_setcolreg,
@ -1214,6 +1215,7 @@ static const struct fb_ops matroxfb_ops = {
/* .fb_copyarea = <set by matrox_cfbX_init>, */
/* .fb_imageblit = <set by matrox_cfbX_init>, */
/* .fb_cursor = <set by matrox_cfbX_init>, */
__FB_DEFAULT_IOMEM_OPS_MMAP,
};
#define RSDepth(X) (((X) >> 8) & 0x0F)

4
drivers/video/fbdev/matrox/matroxfb_crtc2.c
View File

@ -567,15 +567,13 @@ static const struct fb_ops matroxfb_dh_ops = {
.owner = THIS_MODULE,
.fb_open = matroxfb_dh_open,
.fb_release = matroxfb_dh_release,
FB_DEFAULT_IOMEM_OPS,
.fb_check_var = matroxfb_dh_check_var,
.fb_set_par = matroxfb_dh_set_par,
.fb_setcolreg = matroxfb_dh_setcolreg,
.fb_pan_display =matroxfb_dh_pan_display,
.fb_blank = matroxfb_dh_blank,
.fb_ioctl = matroxfb_dh_ioctl,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
static struct fb_var_screeninfo matroxfb_dh_defined = {