From: Maxime Ripard <maxime.rip...@free-electrons.com>

The "CPU" (or Intel 8080) interface uses a different interrupt called
TRI_FINISH (most likely TRI being for trigger) to notify the end of frames,
and hence the VBLANK period.

And that interrupt to the possible VBLANK interrupts source.

Reviewed-by: Chen-Yu Tsai <w...@csie.org>
Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com>
---
 drivers/gpu/drm/sun4i/sun4i_tcon.c |  9 ++++++---
 drivers/gpu/drm/sun4i/sun4i_tcon.h |  4 ++++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c 
b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index b3960118deb9..7e5134bfb028 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -196,7 +196,8 @@ void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool 
enable)
        DRM_DEBUG_DRIVER("%sabling VBLANK interrupt\n", enable ? "En" : "Dis");
 
        mask = SUN4I_TCON_GINT0_VBLANK_ENABLE(0) |
-              SUN4I_TCON_GINT0_VBLANK_ENABLE(1);
+               SUN4I_TCON_GINT0_VBLANK_ENABLE(1) |
+               SUN4I_TCON_GINT0_TCON0_TRI_FINISH_ENABLE;
 
        if (enable)
                val = mask;
@@ -548,7 +549,8 @@ static irqreturn_t sun4i_tcon_handler(int irq, void 
*private)
        regmap_read(tcon->regs, SUN4I_TCON_GINT0_REG, &status);
 
        if (!(status & (SUN4I_TCON_GINT0_VBLANK_INT(0) |
-                       SUN4I_TCON_GINT0_VBLANK_INT(1))))
+                       SUN4I_TCON_GINT0_VBLANK_INT(1) |
+                       SUN4I_TCON_GINT0_TCON0_TRI_FINISH_INT)))
                return IRQ_NONE;
 
        drm_crtc_handle_vblank(&scrtc->crtc);
@@ -557,7 +559,8 @@ static irqreturn_t sun4i_tcon_handler(int irq, void 
*private)
        /* Acknowledge the interrupt */
        regmap_update_bits(tcon->regs, SUN4I_TCON_GINT0_REG,
                           SUN4I_TCON_GINT0_VBLANK_INT(0) |
-                          SUN4I_TCON_GINT0_VBLANK_INT(1),
+                          SUN4I_TCON_GINT0_VBLANK_INT(1) |
+                          SUN4I_TCON_GINT0_TCON0_TRI_FINISH_INT,
                           0);
 
        return IRQ_HANDLED;
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h 
b/drivers/gpu/drm/sun4i/sun4i_tcon.h
index b761c7b823c5..067183076807 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.h
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
@@ -28,7 +28,11 @@
 
 #define SUN4I_TCON_GINT0_REG                   0x4
 #define SUN4I_TCON_GINT0_VBLANK_ENABLE(pipe)           BIT(31 - (pipe))
+#define SUN4I_TCON_GINT0_TCON0_TRI_FINISH_ENABLE       BIT(27)
+#define SUN4I_TCON_GINT0_TCON0_TRI_COUNTER_ENABLE      BIT(26)
 #define SUN4I_TCON_GINT0_VBLANK_INT(pipe)              BIT(15 - (pipe))
+#define SUN4I_TCON_GINT0_TCON0_TRI_FINISH_INT          BIT(11)
+#define SUN4I_TCON_GINT0_TCON0_TRI_COUNTER_INT         BIT(10)
 
 #define SUN4I_TCON_GINT1_REG                   0x8
 #define SUN4I_TCON_FRM_CTL_REG                 0x10
-- 
git-series 0.9.1

Reply via email to