Re: [PATCH 20/32] media/ivtvfb: Initialize fb_ops to fbdev I/O-memory helpers
From: Hans Verkuil <hidden>
Date: 2023-11-20 08:52:48
Also in:
dri-devel, linux-media
Hi Thomas, On 15/11/2023 11:19, Thomas Zimmermann wrote:
Initialize the instance of struct fb_ops with fbdev initializer macros for framebuffers in I/O address space. This explictily sets the read/write, draw and mmap callbacks to the correct default implementation. Fbdev drivers sometimes rely on the callbacks being NULL for a default implementation to be invoked; hence requireing 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. Set the callbacks via macros. No functional changes.
Makes sense, shall I pick up this patch? If you prefer to take it, then you can add: Reviewed-by: Hans Verkuil <redacted> Regards, Hans
quoted hunk ↗ jump to hunk
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Andy Walls <awalls@md.metrocast.net> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: linux-media@vger.kernel.org --- drivers/media/pci/ivtv/Kconfig | 4 +--- drivers/media/pci/ivtv/ivtvfb.c | 6 +++--- 2 files changed, 4 insertions(+), 6 deletions(-)diff --git a/drivers/media/pci/ivtv/Kconfig b/drivers/media/pci/ivtv/Kconfig index 9be52101bc4f2..2498f9079b756 100644 --- a/drivers/media/pci/ivtv/Kconfig +++ b/drivers/media/pci/ivtv/Kconfig@@ -48,9 +48,7 @@ config VIDEO_IVTV_ALSA config VIDEO_FB_IVTV tristate "Conexant cx23415 framebuffer support" depends on VIDEO_IVTV && FB - select FB_CFB_FILLRECT - select FB_CFB_COPYAREA - select FB_CFB_IMAGEBLIT + select FB_IOMEM_HELPERS help This is a framebuffer driver for the Conexant cx23415 MPEG encoder/decoder.diff --git a/drivers/media/pci/ivtv/ivtvfb.c b/drivers/media/pci/ivtv/ivtvfb.c index 23c8c094e791b..410477e3e6216 100644 --- a/drivers/media/pci/ivtv/ivtvfb.c +++ b/drivers/media/pci/ivtv/ivtvfb.c@@ -927,17 +927,17 @@ static int ivtvfb_blank(int blank_mode, struct fb_info *info) static const struct fb_ops ivtvfb_ops = { .owner = THIS_MODULE, + .fb_read = fb_io_read, .fb_write = ivtvfb_write, .fb_check_var = ivtvfb_check_var, .fb_set_par = ivtvfb_set_par, .fb_setcolreg = ivtvfb_setcolreg, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, + __FB_DEFAULT_IOMEM_OPS_DRAW, .fb_cursor = NULL, .fb_ioctl = ivtvfb_ioctl, .fb_pan_display = ivtvfb_pan_display, .fb_blank = ivtvfb_blank, + __FB_DEFAULT_IOMEM_OPS_MMAP, }; /* Restore hardware after firmware restart */