drm/tinydrm: Use damage helper for dirtyfb

This switches to drm_atomic_helper_dirtyfb() as the framebuffer dirty
handler. All flushing will now happen in the pipe functions.

Also enable the damage plane property for all except repaper which can
only do full updates.

ili9225:
This change made ili9225_init() equal to mipi_dbi_init() so use it.

v3: Include vblank header (Sam)
    ili9225 and st7586 can't use mipi_dbi_enable_flush() (David)

v2: Remove fb check in mipi_dbi_enable_flush() it can't be NULL
    (kbuild test robot)

Cc: David Lechner <david@lechnology.com>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Tested-by: David Lechner <david@lechnology.com>
Reviewed-by: David Lechner <david@lechnology.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-5-noralf@tronnes.org

1 files changed, 23 insertions, 17 deletions

diff --git a/drivers/gpu/drm/tinydrm/repaper.c b/drivers/gpu/drm/tinydrm/repaper.c
index 238515de449e..b037c6540cf3 100644
--- a/drivers/gpu/drm/tinydrm/repaper.c
+++ b/drivers/gpu/drm/tinydrm/repaper.c
@@ -26,11 +26,13 @@
 #include <linux/spi/spi.h>
 #include <linux/thermal.h>
 
+#include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_rect.h>
+#include <drm/drm_vblank.h>
 #include <drm/tinydrm/tinydrm.h>
 #include <drm/tinydrm/tinydrm-helpers.h>
 
@@ -523,11 +525,7 @@ static void repaper_gray8_to_mono_reversed(u8 *buf, u32 width, u32 height)
 		}
 }
 
-static int repaper_fb_dirty(struct drm_framebuffer *fb,
-			    struct drm_file *file_priv,
-			    unsigned int flags, unsigned int color,
-			    struct drm_clip_rect *clips,
-			    unsigned int num_clips)
+static int repaper_fb_dirty(struct drm_framebuffer *fb)
 {
 	struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
 	struct dma_buf_attachment *import_attach = cma_obj->base.import_attach;
@@ -626,12 +624,6 @@ out_free:
 	return ret;
 }
 
-static const struct drm_framebuffer_funcs repaper_fb_funcs = {
-	.destroy	= drm_gem_fb_destroy,
-	.create_handle	= drm_gem_fb_create_handle,
-	.dirty		= tinydrm_fb_dirty,
-};
-
 static void power_off(struct repaper_epd *epd)
 {
 	/* Turn off power and all signals */
@@ -795,9 +787,7 @@ static void repaper_pipe_disable(struct drm_simple_display_pipe *pipe)
 
 	DRM_DEBUG_DRIVER("\n");
 
-	mutex_lock(&tdev->dirty_lock);
 	epd->enabled = false;
-	mutex_unlock(&tdev->dirty_lock);
 
 	/* Nothing frame */
 	for (line = 0; line < epd->height; line++)
@@ -840,10 +830,28 @@ static void repaper_pipe_disable(struct drm_simple_display_pipe *pipe)
 	power_off(epd);
 }
 
+static void repaper_pipe_update(struct drm_simple_display_pipe *pipe,
+				struct drm_plane_state *old_state)
+{
+	struct drm_plane_state *state = pipe->plane.state;
+	struct drm_crtc *crtc = &pipe->crtc;
+	struct drm_rect rect;
+
+	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
+		repaper_fb_dirty(state->fb);
+
+	if (crtc->state->event) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		spin_unlock_irq(&crtc->dev->event_lock);
+		crtc->state->event = NULL;
+	}
+}
+
 static const struct drm_simple_display_pipe_funcs repaper_pipe_funcs = {
 	.enable = repaper_pipe_enable,
 	.disable = repaper_pipe_disable,
-	.update = tinydrm_display_pipe_update,
+	.update = repaper_pipe_update,
 	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
 };
 
@@ -1057,12 +1065,10 @@ static int repaper_probe(struct spi_device *spi)
 
 	tdev = &epd->tinydrm;
 
-	ret = devm_tinydrm_init(dev, tdev, &repaper_fb_funcs, &repaper_driver);
+	ret = devm_tinydrm_init(dev, tdev, &repaper_driver);
 	if (ret)
 		return ret;
 
-	tdev->fb_dirty = repaper_fb_dirty;
-
 	ret = tinydrm_display_pipe_init(tdev, &repaper_pipe_funcs,
 					DRM_MODE_CONNECTOR_VIRTUAL,
 					repaper_formats,