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Date: Tue, 16 Apr 2019 14:04:57 +0800
From: Jitao Shi <jitao.shi@...iatek.com>
To: Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>, <linux-pwm@...r.kernel.org>,
David Airlie <airlied@...ux.ie>,
Matthias Brugger <matthias.bgg@...il.com>
CC: Jitao Shi <jitao.shi@...iatek.com>,
Thierry Reding <treding@...dia.com>,
Ajay Kumar <ajaykumar.rs@...sung.com>,
Inki Dae <inki.dae@...sung.com>,
Rahul Sharma <rahul.sharma@...sung.com>,
Sean Paul <seanpaul@...omium.org>,
Vincent Palatin <vpalatin@...omium.org>,
Andy Yan <andy.yan@...k-chips.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Russell King <rmk+kernel@....linux.org.uk>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<dri-devel@...ts.freedesktop.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<srv_heupstream@...iatek.com>,
Sascha Hauer <kernel@...gutronix.de>,
<yingjoe.chen@...iatek.com>, <eddie.huang@...iatek.com>,
<cawa.cheng@...iatek.com>, <bibby.hsieh@...iatek.com>,
<ck.hu@...iatek.com>, <stonea168@....com>
Subject: [v2 1/5] drm/mediatek: move mipi_dsi_host_register to probe
DSI panel driver need attach function which is inculde in
mipi_dsi_host_ops.
If mipi_dsi_host_register is not in probe, dsi panel will
probe fail or more delay.
So move the mipi_dsi_host_register to probe from bind.
Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
---
drivers/gpu/drm/mediatek/mtk_dsi.c | 50 ++++++++++++++++++------------
1 file changed, 30 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index b00eb2d2e086..6c4ac37f983d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1045,12 +1045,6 @@ static int mtk_dsi_bind(struct device *dev, struct device *master, void *data)
return ret;
}
- ret = mipi_dsi_host_register(&dsi->host);
- if (ret < 0) {
- dev_err(dev, "failed to register DSI host: %d\n", ret);
- goto err_ddp_comp_unregister;
- }
-
ret = mtk_dsi_create_conn_enc(drm, dsi);
if (ret) {
DRM_ERROR("Encoder create failed with %d\n", ret);
@@ -1060,8 +1054,6 @@ static int mtk_dsi_bind(struct device *dev, struct device *master, void *data)
return 0;
err_unregister:
- mipi_dsi_host_unregister(&dsi->host);
-err_ddp_comp_unregister:
mtk_ddp_comp_unregister(drm, &dsi->ddp_comp);
return ret;
}
@@ -1097,31 +1089,37 @@ static int mtk_dsi_probe(struct platform_device *pdev)
dsi->host.ops = &mtk_dsi_ops;
dsi->host.dev = dev;
+ dsi->dev = dev;
+ ret = mipi_dsi_host_register(&dsi->host);
+ if (ret < 0) {
+ dev_err(dev, "failed to register DSI host: %d\n", ret);
+ return ret;
+ }
ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
&dsi->panel, &dsi->bridge);
if (ret)
- return ret;
+ goto err_unregister_host;
dsi->engine_clk = devm_clk_get(dev, "engine");
if (IS_ERR(dsi->engine_clk)) {
ret = PTR_ERR(dsi->engine_clk);
dev_err(dev, "Failed to get engine clock: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
dsi->digital_clk = devm_clk_get(dev, "digital");
if (IS_ERR(dsi->digital_clk)) {
ret = PTR_ERR(dsi->digital_clk);
dev_err(dev, "Failed to get digital clock: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
dsi->hs_clk = devm_clk_get(dev, "hs");
if (IS_ERR(dsi->hs_clk)) {
ret = PTR_ERR(dsi->hs_clk);
dev_err(dev, "Failed to get hs clock: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1129,33 +1127,35 @@ static int mtk_dsi_probe(struct platform_device *pdev)
if (IS_ERR(dsi->regs)) {
ret = PTR_ERR(dsi->regs);
dev_err(dev, "Failed to ioremap memory: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
dsi->phy = devm_phy_get(dev, "dphy");
if (IS_ERR(dsi->phy)) {
ret = PTR_ERR(dsi->phy);
dev_err(dev, "Failed to get MIPI-DPHY: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DSI);
if (comp_id < 0) {
dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
- return comp_id;
+ ret = comp_id;
+ goto err_unregister_host;
}
ret = mtk_ddp_comp_init(dev, dev->of_node, &dsi->ddp_comp, comp_id,
&mtk_dsi_funcs);
if (ret) {
dev_err(dev, "Failed to initialize component: %d\n", ret);
- return ret;
+ goto err_unregister_host;
}
irq_num = platform_get_irq(pdev, 0);
if (irq_num < 0) {
- dev_err(&pdev->dev, "failed to request dsi irq resource\n");
- return -EPROBE_DEFER;
+ dev_err(&pdev->dev, "failed to get dsi irq_num: %d\n", irq_num);
+ ret = irq_num;
+ goto err_unregister_host;
}
irq_set_status_flags(irq_num, IRQ_TYPE_LEVEL_LOW);
@@ -1163,14 +1163,24 @@ static int mtk_dsi_probe(struct platform_device *pdev)
IRQF_TRIGGER_LOW, dev_name(&pdev->dev), dsi);
if (ret) {
dev_err(&pdev->dev, "failed to request mediatek dsi irq\n");
- return -EPROBE_DEFER;
+ goto err_unregister_host;
}
init_waitqueue_head(&dsi->irq_wait_queue);
platform_set_drvdata(pdev, dsi);
- return component_add(&pdev->dev, &mtk_dsi_component_ops);
+ ret = component_add(&pdev->dev, &mtk_dsi_component_ops);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add component: %d\n", ret);
+ goto err_unregister_host;
+ }
+
+ return 0;
+
+err_unregister_host:
+ mipi_dsi_host_unregister(&dsi->host);
+ return ret;
}
static int mtk_dsi_remove(struct platform_device *pdev)
--
2.21.0
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