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Date: Fri, 4 Mar 2022 18:15:54 +0800
From: <xinlei.lee@...iatek.com>
To: <chunkuang.hu@...nel.org>, <p.zabel@...gutronix.de>,
<airlied@...ux.ie>, <daniel@...ll.ch>, <matthias.bgg@...il.com>
CC: <dri-devel@...ts.freedesktop.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
<jitao.shi@...iatek.com>, <allen-kh.cheng@...iatek.com>,
<rex-bc.chen@...iatek.com>, Xinlei Lee <xinlei.lee@...iatek.com>
Subject: [PATCH v2,2/4] drm/mediatek: Separate poweron/poweroff from enable/disable and define new funcs
From: Jitao Shi <jitao.shi@...iatek.com>
In order to match the changes of "Use the drm_panel_bridge API",
the poweron/poweroff of dsi is extracted from enable/disable and
defined as new funcs (pre_enable/post_disable).
Fixes: 2dd8075d2185 ("drm/mediatek: mtk_dsi: Use the drm_panel_bridge API")
Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
Signed-off-by: Xinlei Lee <xinlei.lee@...iatek.com>
---
drivers/gpu/drm/mediatek/mtk_dsi.c | 45 +++++++++++++++++-------------
1 file changed, 26 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 6d7b66d5da42..e47c338a7c22 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -679,16 +679,6 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
if (--dsi->refcount != 0)
return;
- /*
- * mtk_dsi_stop() and mtk_dsi_start() is asymmetric, since
- * mtk_dsi_stop() should be called after mtk_drm_crtc_atomic_disable(),
- * which needs irq for vblank, and mtk_dsi_stop() will disable irq.
- * mtk_dsi_start() needs to be called in mtk_output_dsi_enable(),
- * after dsi is fully set.
- */
- mtk_dsi_stop(dsi);
-
- mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500);
mtk_dsi_reset_engine(dsi);
mtk_dsi_lane0_ulp_mode_enter(dsi);
mtk_dsi_clk_ulp_mode_enter(dsi);
@@ -703,17 +693,9 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
static void mtk_output_dsi_enable(struct mtk_dsi *dsi)
{
- int ret;
-
if (dsi->enabled)
return;
- ret = mtk_dsi_poweron(dsi);
- if (ret < 0) {
- DRM_ERROR("failed to power on dsi\n");
- return;
- }
-
mtk_dsi_set_mode(dsi);
mtk_dsi_clk_hs_mode(dsi, 1);
@@ -727,7 +709,16 @@ static void mtk_output_dsi_disable(struct mtk_dsi *dsi)
if (!dsi->enabled)
return;
- mtk_dsi_poweroff(dsi);
+ /*
+ * mtk_dsi_stop() and mtk_dsi_start() is asymmetric, since
+ * mtk_dsi_stop() should be called after mtk_drm_crtc_atomic_disable(),
+ * which needs irq for vblank, and mtk_dsi_stop() will disable irq.
+ * mtk_dsi_start() needs to be called in mtk_output_dsi_enable(),
+ * after dsi is fully set.
+ */
+ mtk_dsi_stop(dsi);
+
+ mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500);
dsi->enabled = false;
}
@@ -765,10 +756,26 @@ static void mtk_dsi_bridge_enable(struct drm_bridge *bridge)
mtk_output_dsi_enable(dsi);
}
+static void mtk_dsi_bridge_pre_enable(struct drm_bridge *bridge)
+{
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
+
+ mtk_dsi_poweron(dsi);
+}
+
+static void mtk_dsi_bridge_post_disable(struct drm_bridge *bridge)
+{
+ struct mtk_dsi *dsi = bridge_to_dsi(bridge);
+
+ mtk_dsi_poweroff(dsi);
+}
+
static const struct drm_bridge_funcs mtk_dsi_bridge_funcs = {
.attach = mtk_dsi_bridge_attach,
.disable = mtk_dsi_bridge_disable,
.enable = mtk_dsi_bridge_enable,
+ .pre_enable = mtk_dsi_bridge_pre_enable,
+ .post_disable = mtk_dsi_bridge_post_disable,
.mode_set = mtk_dsi_bridge_mode_set,
};
--
2.18.0
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