linux-kernel - [PATCH v5 5/7] drm/mediatek: dpi/dsi: change the getting possible

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Date:   Wed, 19 Aug 2020 10:17:50 +0200
From:   Frank Wunderlich <linux@...web.de>
To:     linux-mediatek@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, Daniel Vetter <daniel@...ll.ch>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Jitao Shi <jitao.shi@...iatek.com>
Subject: [PATCH v5 5/7] drm/mediatek: dpi/dsi: change the getting possible_crtc way

From: Jitao Shi <jitao.shi@...iatek.com>

For current mediatek dsi encoder, its possible crtc is fixed in crtc
0, and mediatek dpi encoder's possible crtc is fixed in crtc 1. In
some SoC the possible crtc is not fixed in this case, so call
mtk_drm_find_possible_crtc_by_comp() to find out the correct possible
crtc.

Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 3 ++-
 drivers/gpu/drm/mediatek/mtk_dsi.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index d4f0fb7ad312..e43977015843 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -608,7 +608,8 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
 	drm_encoder_helper_add(&dpi->encoder, &mtk_dpi_encoder_helper_funcs);
 
 	/* Currently DPI0 is fixed to be driven by OVL1 */
-	dpi->encoder.possible_crtcs = BIT(1);
+	dpi->encoder.possible_crtcs =
+		mtk_drm_find_possible_crtc_by_comp(drm_dev, dpi->ddp_comp);
 
 	ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL, 0);
 	if (ret) {
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 16fd99dcdacf..c9f4ad029cb1 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -974,7 +974,8 @@ static int mtk_dsi_encoder_init(struct drm_device *drm, struct mtk_dsi *dsi)
 	 * Currently display data paths are statically assigned to a crtc each.
 	 * crtc 0 is OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0
 	 */
-	dsi->encoder.possible_crtcs = 1;
+	dsi->encoder.possible_crtcs =
+		mtk_drm_find_possible_crtc_by_comp(drm, dsi->ddp_comp);
 
 	ret = drm_bridge_attach(&dsi->encoder, &dsi->bridge, NULL,
 				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
-- 
2.25.1