diff options
| author | Maxime Ripard <maxime.ripard@bootlin.com> | 2018-04-11 09:39:28 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@bootlin.com> | 2018-04-16 21:21:16 +0200 |
| commit | d99008aab9f57d5b036cf675f22b9d3939e7e3fe (patch) | |
| tree | 769b15de87eceb44b124facd52b52f8907d0d4b6 /drivers/gpu/drm/sun4i/sun4i_backend.c | |
| parent | 301a9b8d545690f7bd91e1794e1498aa62902d13 (diff) | |
| download | lwn-d99008aab9f57d5b036cf675f22b9d3939e7e3fe.tar.gz lwn-d99008aab9f57d5b036cf675f22b9d3939e7e3fe.zip | |
drm/sun4i: Add support for plane alpha
Our backend supports a per-plane alpha property. Support it through our new
helper.
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/13e89f0d2f2b55752a22eb8c4f37f325246a3a9c.1523432341.git-series.maxime.ripard@bootlin.com
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_backend.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_backend.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c index 9bad54f3de38..de0a76dfa1a2 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.c +++ b/drivers/gpu/drm/sun4i/sun4i_backend.c @@ -295,6 +295,15 @@ int sun4i_backend_update_layer_formats(struct sun4i_backend *backend, DRM_DEBUG_DRIVER("Switching display backend interlaced mode %s\n", interlaced ? "on" : "off"); + val = SUN4I_BACKEND_ATTCTL_REG0_LAY_GLBALPHA(state->alpha >> 8); + if (state->alpha != DRM_BLEND_ALPHA_OPAQUE) + val |= SUN4I_BACKEND_ATTCTL_REG0_LAY_GLBALPHA_EN; + regmap_update_bits(backend->engine.regs, + SUN4I_BACKEND_ATTCTL_REG0(layer), + SUN4I_BACKEND_ATTCTL_REG0_LAY_GLBALPHA_MASK | + SUN4I_BACKEND_ATTCTL_REG0_LAY_GLBALPHA_EN, + val); + if (sun4i_backend_format_is_yuv(fb->format->format)) return sun4i_backend_update_yuv_format(backend, layer, plane); @@ -490,7 +499,7 @@ static int sun4i_backend_atomic_check(struct sunxi_engine *engine, DRM_DEBUG_DRIVER("Plane FB format is %s\n", drm_get_format_name(fb->format->format, &format_name)); - if (fb->format->has_alpha) + if (fb->format->has_alpha || (plane_state->alpha != DRM_BLEND_ALPHA_OPAQUE)) num_alpha_planes++; if (sun4i_backend_format_is_yuv(fb->format->format)) { @@ -548,7 +557,8 @@ static int sun4i_backend_atomic_check(struct sunxi_engine *engine, } /* We can't have an alpha plane at the lowest position */ - if (plane_states[0]->fb->format->has_alpha) + if (plane_states[0]->fb->format->has_alpha || + (plane_states[0]->alpha != DRM_BLEND_ALPHA_OPAQUE)) return -EINVAL; for (i = 1; i < num_planes; i++) { @@ -560,7 +570,7 @@ static int sun4i_backend_atomic_check(struct sunxi_engine *engine, * The only alpha position is the lowest plane of the * second pipe. */ - if (fb->format->has_alpha) + if (fb->format->has_alpha || (p_state->alpha != DRM_BLEND_ALPHA_OPAQUE)) current_pipe++; s_state->pipe = current_pipe; |