From: Thierry Reding <treding@xxxxxxxxxx>
The majority of the driver already uses struct iosys_map to encapsulate
accesses to I/O remapped vs. system memory. Accesses via the screen base
pointer still use __iomem annotations, which can lead to inconsistencies
and conflicts with subsequent patches.
Convert the screen base to a struct iosys_map as well for consistency
and to avoid these issues.
Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
Changes in v4:
- rename screen variable to dst for consistency with other drivers
- add Reviewed-by from Thomas
drivers/gpu/drm/tiny/simpledrm.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c
index f658b99c796a..c1ed6dd426ec 100644
--- a/drivers/gpu/drm/tiny/simpledrm.c
+++ b/drivers/gpu/drm/tiny/simpledrm.c
@@ -208,7 +208,7 @@ struct simpledrm_device {
unsigned int pitch;
/* memory management */
- void __iomem *screen_base;
+ struct iosys_map screen_base;
/* modesetting */
uint32_t formats[8];
@@ -473,15 +473,15 @@ static void simpledrm_primary_plane_helper_atomic_update(struct drm_plane *plane
drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state);
drm_atomic_for_each_plane_damage(&iter, &damage) {
- struct iosys_map dst = IOSYS_MAP_INIT_VADDR(sdev->screen_base);
struct drm_rect dst_clip = plane_state->dst;
+ struct iosys_map dst = sdev->screen_base;
if (!drm_rect_intersect(&dst_clip, &damage))
continue;
iosys_map_incr(&dst, drm_fb_clip_offset(sdev->pitch, sdev->format, &dst_clip));
- drm_fb_blit(&dst, &sdev->pitch, sdev->format->format, shadow_plane_state->data, fb,
- &damage);
+ drm_fb_blit(&dst, &sdev->pitch, sdev->format->format, shadow_plane_state->data,
+ fb, &damage);
}
drm_dev_exit(idx);
@@ -500,7 +500,7 @@ static void simpledrm_primary_plane_helper_atomic_disable(struct drm_plane *plan
return;
/* Clear screen to black if disabled */
- memset_io(sdev->screen_base, 0, sdev->pitch * sdev->mode.vdisplay);
+ iosys_map_memset(&sdev->screen_base, 0, 0, sdev->pitch * sdev->mode.vdisplay);
drm_dev_exit(idx);
}
@@ -703,7 +703,8 @@ static struct simpledrm_device *simpledrm_device_create(struct drm_driver *drv,
screen_base = devm_ioremap_wc(&pdev->dev, mem->start, resource_size(mem));
if (!screen_base)
return ERR_PTR(-ENOMEM);
- sdev->screen_base = screen_base;
+
+ iosys_map_set_vaddr_iomem(&sdev->screen_base, screen_base);
/*
* Modesetting
--
2.39.0
