Hi Am 15.05.23 um 19:55 schrieb Sam Ravnborg:
Hi Thomas, On Mon, May 15, 2023 at 11:40:23AM +0200, Thomas Zimmermann wrote:Use the regular fbdev helpers for framebuffer I/O instead of DRM's helpers. Armada does not use damage handling, so DRM's fbdev helpers are mere wrappers around the fbdev code. By using fbdev helpers directly within each DRM fbdev emulation, we can eventually remove DRM's wrapper functions entirely. v2: * use FB_IO_HELPERS option Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> Cc: Russell King <linux@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/armada/Kconfig | 1 + drivers/gpu/drm/armada/armada_fbdev.c | 9 ++++----- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/armada/Kconfig b/drivers/gpu/drm/armada/Kconfig index f5c66d89ba99..5afade25e217 100644 --- a/drivers/gpu/drm/armada/Kconfig +++ b/drivers/gpu/drm/armada/Kconfig @@ -3,6 +3,7 @@ config DRM_ARMADA tristate "DRM support for Marvell Armada SoCs" depends on DRM && HAVE_CLK && ARM && MMU select DRM_KMS_HELPER + select FB_IO_HELPERS if DRM_FBDEV_EMULATION help Support the "LCD" controllers found on the Marvell Armada 510 devices. There are two controllers on the device, each controller diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index 0a5fd1aa86eb..6c3bbaf53569 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -5,6 +5,7 @@ */#include <linux/errno.h>+#include <linux/fb.h> #include <linux/kernel.h> #include <linux/module.h>@@ -34,11 +35,9 @@ static void armada_fbdev_fb_destroy(struct fb_info *info)static const struct fb_ops armada_fb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, - .fb_read = drm_fb_helper_cfb_read, - .fb_write = drm_fb_helper_cfb_write,I had expected to see .fb_read = fb_io_read, But maybe this only used when using damage handling?
fb_io_read() and fb_io_write() are the default implementations. They are called when no callback has been set. All the other fbdev drivers leave them out, so I kept this pattern for the DRM side as well.
Best regards Thomas
Likewise for drm_fb_helper_cfb_write. ??- .fb_fillrect = drm_fb_helper_cfb_fillrect, - .fb_copyarea = drm_fb_helper_cfb_copyarea, - .fb_imageblit = drm_fb_helper_cfb_imageblit, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit,This part is as expected. Sam.fb_destroy = armada_fbdev_fb_destroy, };--2.40.1
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg)
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