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Code Issues Releases Wiki Activity

drm/mipi-dbi: Move drm_dev_{enter, exit}() out from fb_dirty functions

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Call drm_dev_enter() and drm_dev_exit() in the outer-most callbacks
of the modesetting pipeline. If drm_dev_enter() fails, the driver can
thus avoid unnecessary work.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Noralf Trønnes <noralf@tronnes.org> # drm/tiny/mi0283qt
Link: https://patchwork.freedesktop.org/patch/msgid/20221202125644.7917-9-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2022-12-02 13:56:44 +01:00
parent 69c63e88ea
commit 3ea44105bd
3 changed files with 21 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/gpu/drm/drm_mipi_dbi.c
View file

@ -259,13 +259,10 @@ static void mipi_dbi_fb_dirty(struct iosys_map *src, struct drm_framebuffer *fb,
unsigned int width = rect->x2 - rect->x1;
struct mipi_dbi *dbi = &dbidev->dbi;
bool swap = dbi->swap_bytes;
int idx, ret = 0;
int ret = 0;
bool full;
void *tr;
if (!drm_dev_enter(fb->dev, &idx))
return;
full = width == fb->width && height == fb->height;
DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
@ -288,8 +285,6 @@ static void mipi_dbi_fb_dirty(struct iosys_map *src, struct drm_framebuffer *fb,
err_msg:
if (ret)
drm_err_once(fb->dev, "Failed to update display %d\n", ret);
drm_dev_exit(idx);
}
/**
@ -325,6 +320,7 @@ void mipi_dbi_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state);
struct drm_framebuffer *fb = state->fb;
struct drm_rect rect;
int idx;
if (!pipe->crtc.state->active)
return;
@ -332,8 +328,13 @@ void mipi_dbi_pipe_update(struct drm_simple_display_pipe *pipe,
if (WARN_ON(!fb))
return;
if (!drm_dev_enter(fb->dev, &idx))
return;
if (drm_atomic_helper_damage_merged(old_state, state, &rect))
mipi_dbi_fb_dirty(&shadow_plane_state->data[0], fb, &rect);
drm_dev_exit(idx);
}
EXPORT_SYMBOL(mipi_dbi_pipe_update);

13
drivers/gpu/drm/tiny/ili9225.c
View file

@ -87,13 +87,10 @@ static void ili9225_fb_dirty(struct iosys_map *src, struct drm_framebuffer *fb,
bool swap = dbi->swap_bytes;
u16 x_start, y_start;
u16 x1, x2, y1, y2;
int idx, ret = 0;
int ret = 0;
bool full;
void *tr;
if (!drm_dev_enter(fb->dev, &idx))
return;
full = width == fb->width && height == fb->height;
DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
@ -156,8 +153,6 @@ static void ili9225_fb_dirty(struct iosys_map *src, struct drm_framebuffer *fb,
err_msg:
if (ret)
dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
drm_dev_exit(idx);
}
static void ili9225_pipe_update(struct drm_simple_display_pipe *pipe,
@ -167,12 +162,18 @@ static void ili9225_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state);
struct drm_framebuffer *fb = state->fb;
struct drm_rect rect;
int idx;
if (!pipe->crtc.state->active)
return;
if (!drm_dev_enter(fb->dev, &idx))
return;
if (drm_atomic_helper_damage_merged(old_state, state, &rect))
ili9225_fb_dirty(&shadow_plane_state->data[0], fb, &rect);
drm_dev_exit(idx);
}
static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe,

13
drivers/gpu/drm/tiny/st7586.c
View file

@ -113,10 +113,7 @@ static void st7586_fb_dirty(struct iosys_map *src, struct drm_framebuffer *fb,
{
struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(fb->dev);
struct mipi_dbi *dbi = &dbidev->dbi;
int start, end, idx, ret = 0;
if (!drm_dev_enter(fb->dev, &idx))
return;
int start, end, ret = 0;
/* 3 pixels per byte, so grow clip to nearest multiple of 3 */
rect->x1 = rounddown(rect->x1, 3);
@ -145,8 +142,6 @@ static void st7586_fb_dirty(struct iosys_map *src, struct drm_framebuffer *fb,
err_msg:
if (ret)
dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
drm_dev_exit(idx);
}
static void st7586_pipe_update(struct drm_simple_display_pipe *pipe,
@ -156,12 +151,18 @@ static void st7586_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state);
struct drm_framebuffer *fb = state->fb;
struct drm_rect rect;
int idx;
if (!pipe->crtc.state->active)
return;
if (!drm_dev_enter(fb->dev, &idx))
return;
if (drm_atomic_helper_damage_merged(old_state, state, &rect))
st7586_fb_dirty(&shadow_plane_state->data[0], fb, &rect);
drm_dev_exit(idx);
}
static void st7586_pipe_enable(struct drm_simple_display_pipe *pipe,