Commit 81588e44 authored by Robert Chiras's avatar Robert Chiras Committed by Guido Gunther

drm/mxsfb: Add support for live pixel format change

This IP requires full stop and re-start when changing display timings,
but we can change the pixel format while running.
Signed-off-by: default avatarRobert Chiras <robert.chiras@nxp.com>
parent 4cbaf59b
......@@ -494,6 +494,7 @@ void mxsfb_plane_atomic_update(struct mxsfb_drm_private *mxsfb,
struct drm_crtc *crtc = &pipe->crtc;
struct drm_plane_state *new_state = pipe->plane.state;
struct drm_framebuffer *fb = pipe->plane.state->fb;
struct drm_framebuffer *old_fb = state->fb;
struct drm_pending_vblank_event *event;
u32 fb_addr, src_off, src_w, stride, cpp = 0;
......@@ -510,7 +511,7 @@ void mxsfb_plane_atomic_update(struct mxsfb_drm_private *mxsfb,
}
spin_unlock_irq(&crtc->dev->event_lock);
if (!fb)
if (!fb || !old_fb)
return;
fb_addr = mxsfb_get_fb_paddr(mxsfb);
......@@ -533,4 +534,17 @@ void mxsfb_plane_atomic_update(struct mxsfb_drm_private *mxsfb,
src_w = new_state->src_w >> 16;
mxsfb_set_fb_hcrop(mxsfb, src_w, stride);
}
if (old_fb->format->format != fb->format->format) {
struct drm_format_name_buf old_fmt_buf;
struct drm_format_name_buf new_fmt_buf;
DRM_DEV_DEBUG_DRIVER(crtc->dev->dev,
"Switching pixel format: %s -> %s\n",
drm_get_format_name(old_fb->format->format,
&old_fmt_buf),
drm_get_format_name(fb->format->format,
&new_fmt_buf));
mxsfb_set_pixel_fmt(mxsfb, true);
}
}
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