diff options
| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-05-27 18:09:29 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-06-01 09:49:58 +0200 |
| commit | 3cb2f46b3da4c45342414c63cd465de483cb102a (patch) | |
| tree | 4ab336a771aa95d47cd4364a2740299312ac8d24 /drivers/gpu/drm/sun4i/sun4i_tcon.c | |
| parent | b7cb9b9143bc249d494020b55a57acef36d26682 (diff) | |
| download | op-kernel-dev-3cb2f46b3da4c45342414c63cd465de483cb102a.zip op-kernel-dev-3cb2f46b3da4c45342414c63cd465de483cb102a.tar.gz | |
drm/sun4i: tcon: Fix tcon channel 1 backporch calculation
It seems like what's called a backporch in the datasheet is actually the
backporch plus the sync period. Fix that in our driver.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_tcon.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_tcon.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 28da61a..6993ef3 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -269,7 +269,7 @@ void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon, SUN4I_TCON1_BASIC2_Y(mode->crtc_vdisplay)); /* Set horizontal display timings */ - bp = mode->crtc_htotal - mode->crtc_hsync_end; + bp = mode->crtc_htotal - mode->crtc_hsync_start; DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n", mode->htotal, bp); regmap_write(tcon->regs, SUN4I_TCON1_BASIC3_REG, @@ -277,7 +277,7 @@ void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon, SUN4I_TCON1_BASIC3_H_BACKPORCH(bp)); /* Set vertical display timings */ - bp = mode->crtc_vtotal - mode->crtc_vsync_end; + bp = mode->crtc_vtotal - mode->crtc_vsync_start; DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n", mode->vtotal, bp); regmap_write(tcon->regs, SUN4I_TCON1_BASIC4_REG, |
