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Lin" , Fei Shao , Sean Paul , Jason Chen , , , , , Hsiao Chien Sung Subject: [PATCH v7 10/18] drm/mediatek: Support constant blending in Mixer Date: Thu, 2 May 2024 18:38:40 +0800 Message-ID: <20240502103848.5845-11-shawn.sung@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20240502103848.5845-1-shawn.sung@mediatek.com> References: <20240502103848.5845-1-shawn.sung@mediatek.com> MIME-Version: 1.0 X-MTK: N X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Hsiao Chien Sung Support constant blending in Mixer. Signed-off-by: Hsiao Chien Sung --- drivers/gpu/drm/mediatek/mtk_ethdr.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c index 4ffd0a0648613..5283e0993ed65 100644 --- a/drivers/gpu/drm/mediatek/mtk_ethdr.c +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c @@ -154,6 +154,7 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, unsigned int offset = (pending->x & 1) << 31 | pending->y << 16 | pending->x; unsigned int align_width = ALIGN_DOWN(pending->width, 2); unsigned int alpha_con = 0; + bool replace_src_a = false; dev_dbg(dev, "%s+ idx:%d", __func__, idx); @@ -173,8 +174,15 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, if (state->base.fb && state->base.fb->format->has_alpha) alpha_con = MIXER_ALPHA_AEN | MIXER_ALPHA; - mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, alpha_con ? false : true, - DEFAULT_9BIT_ALPHA, + if (state->base.fb && !state->base.fb->format->has_alpha) { + /* + * Mixer doesn't support CONST_BLD mode, + * use a trick to make the output equivalent + */ + replace_src_a = true; + } + + mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, replace_src_a, MIXER_ALPHA, pending->x & 1 ? MIXER_INX_MODE_EVEN_EXTEND : MIXER_INX_MODE_BYPASS, align_width / 2 - 1, cmdq_pkt);