[PATCH v5 1/9] arm64: dts: rockchip: Enable edp disaplay on kevin

[PATCH v5 1/9] arm64: dts: rockchip: Enable edp disaplay on kevin

[Jeffy Chen]

Add edp panel and enable related nodes on kevin.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Mark Yao <mark.yao@rock-chips.com>

---

Changes in v5: None

 arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts | 29 +++++++++++++++++++++++
 arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi      | 16 +++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
index a3d3cea7dc4f..bc67b19f0af5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
@@ -93,6 +93,18 @@
 		pwm-delay-us = <10000>;
 	};
 
+	edp_panel: edp-panel {
+		compatible = "sharp,lq123p1jx31", "simple-panel";
+		backlight = <&backlight>;
+		power-supply = <&pp3300_disp>;
+
+		ports {
+			panel_in_edp: endpoint {
+				remote-endpoint = <&edp_out_panel>;
+			};
+		};
+	};
+
 	thermistor_ppvar_bigcpu: thermistor-ppvar-bigcpu {
 		compatible = "murata,ncp15wb473";
 		pullup-uv = <1800000>;
@@ -264,6 +276,23 @@ ap_i2c_dig: &i2c2 {
 	};
 };
 
+&edp {
+	status = "okay";
+
+	ports {
+		edp_out: port@1 {
+			reg = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			edp_out_panel: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&panel_in_edp>;
+			};
+		};
+	};
+};
+
 &ppvar_bigcpu_pwm {
 	regulator-min-microvolt = <798674>;
 	regulator-max-microvolt = <1302172>;
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
index 5772c52fbfd3..470105d651c2 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
@@ -927,6 +927,22 @@ ap_i2c_audio: &i2c8 {
 	dr_mode = "host";
 };
 
+&vopb {
+	status = "okay";
+};
+
+&vopb_mmu {
+	status = "okay";
+};
+
+&vopl {
+	status = "okay";
+};
+
+&vopl_mmu {
+	status = "okay";
+};
+
 #include <arm/cros-ec-keyboard.dtsi>
 #include <arm/cros-ec-sbs.dtsi>
 
-- 
2.11.0

[PATCH v5 2/9] drm/rockchip: analogix_dp: Remove unnecessary init code

[Jeffy Chen]

Remove unnecessary init code, since we would do it in the power_on()
callback.

Also move of parse code to probe().

Fixes: 9e32e16e9e98 ("drm: rockchip: dp: add rockchip platform dp driver")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v5: None

 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 27 ++++++-------------------
 1 file changed, 6 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 4d3f6ad0abdd..8cae5ad926cd 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -269,7 +269,7 @@ static struct drm_encoder_funcs rockchip_dp_encoder_funcs = {
 	.destroy = rockchip_dp_drm_encoder_destroy,
 };
 
-static int rockchip_dp_init(struct rockchip_dp_device *dp)
+static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)
 {
 	struct device *dev = dp->dev;
 	struct device_node *np = dev->of_node;
@@ -303,19 +303,6 @@ static int rockchip_dp_init(struct rockchip_dp_device *dp)
 		return PTR_ERR(dp->rst);
 	}
 
-	ret = clk_prepare_enable(dp->pclk);
-	if (ret < 0) {
-		DRM_DEV_ERROR(dp->dev, "failed to enable pclk %d\n", ret);
-		return ret;
-	}
-
-	ret = rockchip_dp_pre_init(dp);
-	if (ret < 0) {
-		DRM_DEV_ERROR(dp->dev, "failed to pre init %d\n", ret);
-		clk_disable_unprepare(dp->pclk);
-		return ret;
-	}
-
 	return 0;
 }
 
@@ -361,10 +348,6 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
 	if (!dp_data)
 		return -ENODEV;
 
-	ret = rockchip_dp_init(dp);
-	if (ret < 0)
-		return ret;
-
 	dp->data = dp_data;
 	dp->drm_dev = drm_dev;
 
@@ -398,7 +381,6 @@ static void rockchip_dp_unbind(struct device *dev, struct device *master,
 	rockchip_drm_psr_unregister(&dp->encoder);
 
 	analogix_dp_unbind(dev, master, data);
-	clk_disable_unprepare(dp->pclk);
 }
 
 static const struct component_ops rockchip_dp_component_ops = {
@@ -414,7 +396,7 @@ static int rockchip_dp_probe(struct platform_device *pdev)
 	int ret;
 
 	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL);
-	if (ret)
+	if (ret < 0)
 		return ret;
 
 	dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
@@ -422,9 +404,12 @@ static int rockchip_dp_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	dp->dev = dev;
-
 	dp->plat_data.panel = panel;
 
+	ret = rockchip_dp_of_probe(dp);
+	if (ret < 0)
+		return ret;
+
 	/*
 	 * We just use the drvdata until driver run into component
 	 * add function, and then we would set drvdata to null, so
-- 
2.11.0

[PATCH v5 3/9] drm/bridge: analogix: Do not use device's drvdata

[Jeffy Chen]

The driver that instantiates the bridge should own the drvdata, as all
driver model callbacks (probe, remove, shutdown, PM ops, etc.) are also
owned by its driver struct. Moreover, storing two different pointer
types in driver data depending on driver initialization status is barely
a good practice and in fact has led to many bugs in this driver.

Let's clean up this mess and change Analogix entry points to simply
accept some opaque struct pointer, adjusting their users at the same
time to avoid breaking the compilation.

Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Acked-by: Archit Taneja <architt@codeaurora.org>
---

Changes in v5: None

 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 50 +++++++++-------------
 drivers/gpu/drm/exynos/exynos_dp.c                 | 26 ++++++-----
 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c    | 49 ++++++++++++---------
 include/drm/bridge/analogix_dp.h                   | 19 ++++----
 4 files changed, 74 insertions(+), 70 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 5dd3f1cd074a..74d274b6d31d 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -98,17 +98,15 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
 	return 0;
 }
 
-int analogix_dp_psr_supported(struct device *dev)
+int analogix_dp_psr_supported(struct analogix_dp_device *dp)
 {
-	struct analogix_dp_device *dp = dev_get_drvdata(dev);
 
 	return dp->psr_support;
 }
 EXPORT_SYMBOL_GPL(analogix_dp_psr_supported);
 
-int analogix_dp_enable_psr(struct device *dev)
+int analogix_dp_enable_psr(struct analogix_dp_device *dp)
 {
-	struct analogix_dp_device *dp = dev_get_drvdata(dev);
 	struct edp_vsc_psr psr_vsc;
 
 	if (!dp->psr_support)
@@ -129,9 +127,8 @@ int analogix_dp_enable_psr(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(analogix_dp_enable_psr);
 
-int analogix_dp_disable_psr(struct device *dev)
+int analogix_dp_disable_psr(struct analogix_dp_device *dp)
 {
-	struct analogix_dp_device *dp = dev_get_drvdata(dev);
 	struct edp_vsc_psr psr_vsc;
 	int ret;
 
@@ -1281,8 +1278,9 @@ static ssize_t analogix_dpaux_transfer(struct drm_dp_aux *aux,
 	return analogix_dp_transfer(dp, msg);
 }
 
-int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
-		     struct analogix_dp_plat_data *plat_data)
+struct analogix_dp_device *
+analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
+		 struct analogix_dp_plat_data *plat_data)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct analogix_dp_device *dp;
@@ -1292,14 +1290,12 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 
 	if (!plat_data) {
 		dev_err(dev, "Invalided input plat_data\n");
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	dp = devm_kzalloc(dev, sizeof(struct analogix_dp_device), GFP_KERNEL);
 	if (!dp)
-		return -ENOMEM;
-
-	dev_set_drvdata(dev, dp);
+		return ERR_PTR(-ENOMEM);
 
 	dp->dev = &pdev->dev;
 	dp->dpms_mode = DRM_MODE_DPMS_OFF;
@@ -1316,7 +1312,7 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 
 	ret = analogix_dp_dt_parse_pdata(dp);
 	if (ret)
-		return ret;
+		return ERR_PTR(ret);
 
 	dp->phy = devm_phy_get(dp->dev, "dp");
 	if (IS_ERR(dp->phy)) {
@@ -1330,14 +1326,14 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 			if (ret == -ENOSYS || ret == -ENODEV)
 				dp->phy = NULL;
 			else
-				return ret;
+				return ERR_PTR(ret);
 		}
 	}
 
 	dp->clock = devm_clk_get(&pdev->dev, "dp");
 	if (IS_ERR(dp->clock)) {
 		dev_err(&pdev->dev, "failed to get clock\n");
-		return PTR_ERR(dp->clock);
+		return ERR_CAST(dp->clock);
 	}
 
 	clk_prepare_enable(dp->clock);
@@ -1346,7 +1342,7 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 
 	dp->reg_base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(dp->reg_base))
-		return PTR_ERR(dp->reg_base);
+		return ERR_CAST(dp->reg_base);
 
 	dp->force_hpd = of_property_read_bool(dev->of_node, "force-hpd");
 
@@ -1367,7 +1363,7 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 					    "hpd_gpio");
 		if (ret) {
 			dev_err(&pdev->dev, "failed to get hpd gpio\n");
-			return ret;
+			return ERR_PTR(ret);
 		}
 		dp->irq = gpio_to_irq(dp->hpd_gpio);
 		irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
@@ -1379,7 +1375,7 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 
 	if (dp->irq == -ENXIO) {
 		dev_err(&pdev->dev, "failed to get irq\n");
-		return -ENODEV;
+		return ERR_PTR(-ENODEV);
 	}
 
 	pm_runtime_enable(dev);
@@ -1420,7 +1416,7 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 	phy_power_off(dp->phy);
 	pm_runtime_put(dev);
 
-	return 0;
+	return dp;
 
 err_disable_pm_runtime:
 
@@ -1428,15 +1424,12 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 	pm_runtime_put(dev);
 	pm_runtime_disable(dev);
 
-	return ret;
+	return ERR_PTR(ret);
 }
 EXPORT_SYMBOL_GPL(analogix_dp_bind);
 
-void analogix_dp_unbind(struct device *dev, struct device *master,
-			void *data)
+void analogix_dp_unbind(struct analogix_dp_device *dp)
 {
-	struct analogix_dp_device *dp = dev_get_drvdata(dev);
-
 	analogix_dp_bridge_disable(dp->bridge);
 	dp->connector.funcs->destroy(&dp->connector);
 	dp->encoder->funcs->destroy(dp->encoder);
@@ -1449,16 +1442,14 @@ void analogix_dp_unbind(struct device *dev, struct device *master,
 	}
 
 	drm_dp_aux_unregister(&dp->aux);
-	pm_runtime_disable(dev);
+	pm_runtime_disable(dp->dev);
 	clk_disable_unprepare(dp->clock);
 }
 EXPORT_SYMBOL_GPL(analogix_dp_unbind);
 
 #ifdef CONFIG_PM
-int analogix_dp_suspend(struct device *dev)
+int analogix_dp_suspend(struct analogix_dp_device *dp)
 {
-	struct analogix_dp_device *dp = dev_get_drvdata(dev);
-
 	clk_disable_unprepare(dp->clock);
 
 	if (dp->plat_data->panel) {
@@ -1470,9 +1461,8 @@ int analogix_dp_suspend(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(analogix_dp_suspend);
 
-int analogix_dp_resume(struct device *dev)
+int analogix_dp_resume(struct analogix_dp_device *dp)
 {
-	struct analogix_dp_device *dp = dev_get_drvdata(dev);
 	int ret;
 
 	ret = clk_prepare_enable(dp->clock);
diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c
index 39629e7a80b9..f7e5b2c405ed 100644
--- a/drivers/gpu/drm/exynos/exynos_dp.c
+++ b/drivers/gpu/drm/exynos/exynos_dp.c
@@ -41,6 +41,7 @@ struct exynos_dp_device {
 	struct device              *dev;
 
 	struct videomode           vm;
+	struct analogix_dp_device *adp;
 	struct analogix_dp_plat_data plat_data;
 };
 
@@ -157,13 +158,6 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	struct drm_device *drm_dev = data;
 	int ret;
 
-	/*
-	 * Just like the probe function said, we don't need the
-	 * device drvrate anymore, we should leave the charge to
-	 * analogix dp driver, set the device drvdata to NULL.
-	 */
-	dev_set_drvdata(dev, NULL);
-
 	dp->dev = dev;
 	dp->drm_dev = drm_dev;
 
@@ -190,13 +184,19 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 
 	dp->plat_data.encoder = encoder;
 
-	return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
+	dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
+	if (IS_ERR(dp->adp))
+		return PTR_ERR(dp->adp);
+
+	return 0;
 }
 
 static void exynos_dp_unbind(struct device *dev, struct device *master,
 			     void *data)
 {
-	return analogix_dp_unbind(dev, master, data);
+	struct exynos_dp_device *dp = dev_get_drvdata(dev);
+
+	return analogix_dp_unbind(dp->adp);
 }
 
 static const struct component_ops exynos_dp_ops = {
@@ -257,12 +257,16 @@ static int exynos_dp_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM
 static int exynos_dp_suspend(struct device *dev)
 {
-	return analogix_dp_suspend(dev);
+	struct exynos_dp_device *dp = dev_get_drvdata(dev);
+
+	return analogix_dp_suspend(dp->adp);
 }
 
 static int exynos_dp_resume(struct device *dev)
 {
-	return analogix_dp_resume(dev);
+	struct exynos_dp_device *dp = dev_get_drvdata(dev);
+
+	return analogix_dp_resume(dp->adp);
 }
 #endif
 
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 8cae5ad926cd..fa0365de31d2 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -77,6 +77,7 @@ struct rockchip_dp_device {
 
 	const struct rockchip_dp_chip_data *data;
 
+	struct analogix_dp_device *adp;
 	struct analogix_dp_plat_data plat_data;
 };
 
@@ -85,7 +86,7 @@ static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
 	struct rockchip_dp_device *dp = to_dp(encoder);
 	unsigned long flags;
 
-	if (!analogix_dp_psr_supported(dp->dev))
+	if (!analogix_dp_psr_supported(dp->adp))
 		return;
 
 	DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
@@ -116,9 +117,9 @@ static void analogix_dp_psr_work(struct work_struct *work)
 
 	spin_lock_irqsave(&dp->psr_lock, flags);
 	if (dp->psr_state == EDP_VSC_PSR_STATE_ACTIVE)
-		analogix_dp_enable_psr(dp->dev);
+		analogix_dp_enable_psr(dp->adp);
 	else
-		analogix_dp_disable_psr(dp->dev);
+		analogix_dp_disable_psr(dp->adp);
 	spin_unlock_irqrestore(&dp->psr_lock, flags);
 }
 
@@ -273,7 +274,6 @@ static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)
 {
 	struct device *dev = dp->dev;
 	struct device_node *np = dev->of_node;
-	int ret;
 
 	dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
 	if (IS_ERR(dp->grf)) {
@@ -337,13 +337,6 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
 	struct drm_device *drm_dev = data;
 	int ret;
 
-	/*
-	 * Just like the probe function said, we don't need the
-	 * device drvrate anymore, we should leave the charge to
-	 * analogix dp driver, set the device drvdata to NULL.
-	 */
-	dev_set_drvdata(dev, NULL);
-
 	dp_data = of_device_get_match_data(dev);
 	if (!dp_data)
 		return -ENODEV;
@@ -370,7 +363,11 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
 
 	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
 
-	return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
+	dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
+	if (IS_ERR(dp->adp))
+		return PTR_ERR(dp->adp);
+
+	return 0;
 }
 
 static void rockchip_dp_unbind(struct device *dev, struct device *master,
@@ -379,8 +376,7 @@ static void rockchip_dp_unbind(struct device *dev, struct device *master,
 	struct rockchip_dp_device *dp = dev_get_drvdata(dev);
 
 	rockchip_drm_psr_unregister(&dp->encoder);
-
-	analogix_dp_unbind(dev, master, data);
+	analogix_dp_unbind(dp->adp);
 }
 
 static const struct component_ops rockchip_dp_component_ops = {
@@ -410,11 +406,6 @@ static int rockchip_dp_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
-	/*
-	 * We just use the drvdata until driver run into component
-	 * add function, and then we would set drvdata to null, so
-	 * that analogix dp driver could take charge of the drvdata.
-	 */
 	platform_set_drvdata(pdev, dp);
 
 	return component_add(dev, &rockchip_dp_component_ops);
@@ -427,10 +418,26 @@ static int rockchip_dp_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int rockchip_dp_suspend(struct device *dev)
+{
+	struct rockchip_dp_device *dp = dev_get_drvdata(dev);
+
+	return analogix_dp_suspend(dp->adp);
+}
+
+static int rockchip_dp_resume(struct device *dev)
+{
+	struct rockchip_dp_device *dp = dev_get_drvdata(dev);
+
+	return analogix_dp_resume(dp->adp);
+}
+#endif
+
 static const struct dev_pm_ops rockchip_dp_pm_ops = {
 #ifdef CONFIG_PM_SLEEP
-	.suspend = analogix_dp_suspend,
-	.resume_early = analogix_dp_resume,
+	.suspend = rockchip_dp_suspend,
+	.resume_early = rockchip_dp_resume,
 #endif
 };
 
diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
index c99d6eaef1ac..5518fc75dd6e 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -13,6 +13,8 @@
 
 #include <drm/drm_crtc.h>
 
+struct analogix_dp_device;
+
 enum analogix_dp_devtype {
 	EXYNOS_DP,
 	RK3288_DP,
@@ -38,16 +40,17 @@ struct analogix_dp_plat_data {
 			 struct drm_connector *);
 };
 
-int analogix_dp_psr_supported(struct device *dev);
-int analogix_dp_enable_psr(struct device *dev);
-int analogix_dp_disable_psr(struct device *dev);
+int analogix_dp_psr_supported(struct analogix_dp_device *dp);
+int analogix_dp_enable_psr(struct analogix_dp_device *dp);
+int analogix_dp_disable_psr(struct analogix_dp_device *dp);
 
-int analogix_dp_resume(struct device *dev);
-int analogix_dp_suspend(struct device *dev);
+int analogix_dp_resume(struct analogix_dp_device *dp);
+int analogix_dp_suspend(struct analogix_dp_device *dp);
 
-int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
-		     struct analogix_dp_plat_data *plat_data);
-void analogix_dp_unbind(struct device *dev, struct device *master, void *data);
+struct analogix_dp_device *
+analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
+		 struct analogix_dp_plat_data *plat_data);
+void analogix_dp_unbind(struct analogix_dp_device *dp);
 
 int analogix_dp_start_crc(struct drm_connector *connector);
 int analogix_dp_stop_crc(struct drm_connector *connector);
-- 
2.11.0

[PATCH v5 4/9] drm/bridge: analogix_dp: Fix connector & encoder cleanup

[Jeffy Chen]

Since we are initing connector in the core driver and encoder in the
plat driver, let's clean them up in the right places.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v5: None

 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c |  2 --
 drivers/gpu/drm/exynos/exynos_dp.c                 |  7 +++++--
 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c    | 15 ++++++---------
 3 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 74d274b6d31d..3f910ab36ff6 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1409,7 +1409,6 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 	ret = analogix_dp_create_bridge(drm_dev, dp);
 	if (ret) {
 		DRM_ERROR("failed to create bridge (%d)\n", ret);
-		drm_encoder_cleanup(dp->encoder);
 		goto err_disable_pm_runtime;
 	}
 
@@ -1432,7 +1431,6 @@ void analogix_dp_unbind(struct analogix_dp_device *dp)
 {
 	analogix_dp_bridge_disable(dp->bridge);
 	dp->connector.funcs->destroy(&dp->connector);
-	dp->encoder->funcs->destroy(dp->encoder);
 
 	if (dp->plat_data->panel) {
 		if (drm_panel_unprepare(dp->plat_data->panel))
diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c
index f7e5b2c405ed..33319a858f3a 100644
--- a/drivers/gpu/drm/exynos/exynos_dp.c
+++ b/drivers/gpu/drm/exynos/exynos_dp.c
@@ -185,8 +185,10 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	dp->plat_data.encoder = encoder;
 
 	dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
-	if (IS_ERR(dp->adp))
+	if (IS_ERR(dp->adp)) {
+		dp->encoder.funcs->destroy(&dp->encoder);
 		return PTR_ERR(dp->adp);
+	}
 
 	return 0;
 }
@@ -196,7 +198,8 @@ static void exynos_dp_unbind(struct device *dev, struct device *master,
 {
 	struct exynos_dp_device *dp = dev_get_drvdata(dev);
 
-	return analogix_dp_unbind(dp->adp);
+	analogix_dp_unbind(dp->adp);
+	dp->encoder.funcs->destroy(&dp->encoder);
 }
 
 static const struct component_ops exynos_dp_ops = {
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index fa0365de31d2..c0fb3f3748f4 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -261,13 +261,8 @@ static struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = {
 	.atomic_check = rockchip_dp_drm_encoder_atomic_check,
 };
 
-static void rockchip_dp_drm_encoder_destroy(struct drm_encoder *encoder)
-{
-	drm_encoder_cleanup(encoder);
-}
-
 static struct drm_encoder_funcs rockchip_dp_encoder_funcs = {
-	.destroy = rockchip_dp_drm_encoder_destroy,
+	.destroy = drm_encoder_cleanup,
 };
 
 static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)
@@ -361,12 +356,13 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
 	dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
 	INIT_WORK(&dp->psr_work, analogix_dp_psr_work);
 
-	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
-
 	dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
-	if (IS_ERR(dp->adp))
+	if (IS_ERR(dp->adp)) {
+		dp->encoder.funcs->destroy(&dp->encoder);
 		return PTR_ERR(dp->adp);
+	}
 
+	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
 	return 0;
 }
 
@@ -377,6 +373,7 @@ static void rockchip_dp_unbind(struct device *dev, struct device *master,
 
 	rockchip_drm_psr_unregister(&dp->encoder);
 	analogix_dp_unbind(dp->adp);
+	dp->encoder.funcs->destroy(&dp->encoder);
 }
 
 static const struct component_ops rockchip_dp_component_ops = {
-- 
2.11.0

Re: [PATCH v5 4/9] drm/bridge: analogix_dp: Fix connector & encoder cleanup

[Andrzej Hajda]

On 18.10.2017 14:09, Jeffy Chen wrote:
> Since we are initing connector in the core driver and encoder in the
> plat driver, let's clean them up in the right places.
>
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> ---
>
> Changes in v5: None
>
>  drivers/gpu/drm/bridge/analogix/analogix_dp_core.c |  2 --
>  drivers/gpu/drm/exynos/exynos_dp.c                 |  7 +++++--
>  drivers/gpu/drm/rockchip/analogix_dp-rockchip.c    | 15 ++++++---------
>  3 files changed, 11 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> index 74d274b6d31d..3f910ab36ff6 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> @@ -1409,7 +1409,6 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
>  	ret = analogix_dp_create_bridge(drm_dev, dp);
>  	if (ret) {
>  		DRM_ERROR("failed to create bridge (%d)\n", ret);
> -		drm_encoder_cleanup(dp->encoder);
>  		goto err_disable_pm_runtime;
>  	}
>  
> @@ -1432,7 +1431,6 @@ void analogix_dp_unbind(struct analogix_dp_device *dp)
>  {
>  	analogix_dp_bridge_disable(dp->bridge);
>  	dp->connector.funcs->destroy(&dp->connector);
> -	dp->encoder->funcs->destroy(dp->encoder);
>  
>  	if (dp->plat_data->panel) {
>  		if (drm_panel_unprepare(dp->plat_data->panel))
> diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c
> index f7e5b2c405ed..33319a858f3a 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp.c
> @@ -185,8 +185,10 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>  	dp->plat_data.encoder = encoder;
>  
>  	dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
> -	if (IS_ERR(dp->adp))
> +	if (IS_ERR(dp->adp)) {
> +		dp->encoder.funcs->destroy(&dp->encoder);
>  		return PTR_ERR(dp->adp);
> +	}
>  
>  	return 0;
>  }
> @@ -196,7 +198,8 @@ static void exynos_dp_unbind(struct device *dev, struct device *master,
>  {
>  	struct exynos_dp_device *dp = dev_get_drvdata(dev);
>  
> -	return analogix_dp_unbind(dp->adp);
> +	analogix_dp_unbind(dp->adp);
> +	dp->encoder.funcs->destroy(&dp->encoder);
>  }
>  
>  static const struct component_ops exynos_dp_ops = {
> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> index fa0365de31d2..c0fb3f3748f4 100644
> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> @@ -261,13 +261,8 @@ static struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = {
>  	.atomic_check = rockchip_dp_drm_encoder_atomic_check,
>  };
>  
> -static void rockchip_dp_drm_encoder_destroy(struct drm_encoder *encoder)
> -{
> -	drm_encoder_cleanup(encoder);
> -}
> -
>  static struct drm_encoder_funcs rockchip_dp_encoder_funcs = {
> -	.destroy = rockchip_dp_drm_encoder_destroy,
> +	.destroy = drm_encoder_cleanup,
>  };
>  
>  static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)
> @@ -361,12 +356,13 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
>  	dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
>  	INIT_WORK(&dp->psr_work, analogix_dp_psr_work);
>  
> -	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
> -
>  	dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
> -	if (IS_ERR(dp->adp))
> +	if (IS_ERR(dp->adp)) {
> +		dp->encoder.funcs->destroy(&dp->encoder);
>  		return PTR_ERR(dp->adp);
> +	}
>  
> +	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);

You are changing here order of calls: psr_reg after bind, it does not
seem to be related to patch subject.
Anyway psr_register can fail and its result is not checked, but it can
be addressed in separate patch.
So maybe it would be better to leave the order as is, unless there is
reason for change it in one patch, in such case please explain it in
commit message.
Beside this:
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>

 --
Regards
Andrzej

>  	return 0;
>  }
>  
> @@ -377,6 +373,7 @@ static void rockchip_dp_unbind(struct device *dev, struct device *master,
>  
>  	rockchip_drm_psr_unregister(&dp->encoder);
>  	analogix_dp_unbind(dp->adp);
> +	dp->encoder.funcs->destroy(&dp->encoder);
>  }
>  
>  static const struct component_ops rockchip_dp_component_ops = {

[PATCH v5 5/9] drm/rockchip: dw-mipi-dsi: Fix error handling path

[Jeffy Chen]

Add missing pm_runtime_disable() in bind()'s error handling path.

Also cleanup encoder & connector in unbind().

Fixes: 80a9a059d4e4 ("drm/rockchip/dsi: add dw-mipi power domain support")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v5:
Call the destroy hook in the error handling path like in unbind().

 drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index b15755b6129c..e72d4e2b61aa 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -1282,7 +1282,7 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master,
 	ret = dw_mipi_dsi_register(drm, dsi);
 	if (ret) {
 		DRM_DEV_ERROR(dev, "Failed to register mipi_dsi: %d\n", ret);
-		goto err_pllref;
+		goto err_disable_pllref;
 	}
 
 	pm_runtime_enable(dev);
@@ -1292,23 +1292,24 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master,
 	ret = mipi_dsi_host_register(&dsi->dsi_host);
 	if (ret) {
 		DRM_DEV_ERROR(dev, "Failed to register MIPI host: %d\n", ret);
-		goto err_cleanup;
+		goto err_disable_pm_runtime;
 	}
 
 	if (!dsi->panel) {
 		ret = -EPROBE_DEFER;
-		goto err_mipi_dsi_host;
+		goto err_unreg_mipi_dsi_host;
 	}
 
 	dev_set_drvdata(dev, dsi);
 	return 0;
 
-err_mipi_dsi_host:
+err_unreg_mipi_dsi_host:
 	mipi_dsi_host_unregister(&dsi->dsi_host);
-err_cleanup:
-	drm_encoder_cleanup(&dsi->encoder);
-	drm_connector_cleanup(&dsi->connector);
-err_pllref:
+err_disable_pm_runtime:
+	pm_runtime_disable(dev);
+	dsi->connector.funcs->destroy(&dsi->connector);
+	dsi->encoder.funcs->destroy(&dsi->encoder);
+err_disable_pllref:
 	clk_disable_unprepare(dsi->pllref_clk);
 	return ret;
 }
@@ -1320,6 +1321,10 @@ static void dw_mipi_dsi_unbind(struct device *dev, struct device *master,
 
 	mipi_dsi_host_unregister(&dsi->dsi_host);
 	pm_runtime_disable(dev);
+
+	dsi->connector.funcs->destroy(&dsi->connector);
+	dsi->encoder.funcs->destroy(&dsi->encoder);
+
 	clk_disable_unprepare(dsi->pllref_clk);
 }
 
-- 
2.11.0

[PATCH v5 6/9] drm/rockchip: inno_hdmi: Fix error handling path

[Jeffy Chen]

Add missing error handling in bind().

Fixes: 412d4ae6b7a5 ("drm/rockchip: hdmi: add Innosilicon HDMI support")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v5:
Call the destroy hook in the error handling path like in unbind().
Update cleanup order in unbind().

 drivers/gpu/drm/rockchip/inno_hdmi.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index ee584d87111f..9a96ff6b022b 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -851,8 +851,10 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
+	if (irq < 0) {
+		ret = irq;
+		goto err_disable_clk;
+	}
 
 	inno_hdmi_reset(hdmi);
 
@@ -860,7 +862,7 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 	if (IS_ERR(hdmi->ddc)) {
 		ret = PTR_ERR(hdmi->ddc);
 		hdmi->ddc = NULL;
-		return ret;
+		goto err_disable_clk;
 	}
 
 	/*
@@ -874,7 +876,7 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 
 	ret = inno_hdmi_register(drm, hdmi);
 	if (ret)
-		return ret;
+		goto err_put_adapter;
 
 	dev_set_drvdata(dev, hdmi);
 
@@ -884,7 +886,17 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 	ret = devm_request_threaded_irq(dev, irq, inno_hdmi_hardirq,
 					inno_hdmi_irq, IRQF_SHARED,
 					dev_name(dev), hdmi);
+	if (ret < 0)
+		goto err_cleanup_hdmi;
 
+	return 0;
+err_cleanup_hdmi:
+	hdmi->connector.funcs->destroy(&hdmi->connector);
+	hdmi->encoder.funcs->destroy(&hdmi->encoder);
+err_put_adapter:
+	i2c_put_adapter(hdmi->ddc);
+err_disable_clk:
+	clk_disable_unprepare(hdmi->pclk);
 	return ret;
 }
 
@@ -896,8 +908,8 @@ static void inno_hdmi_unbind(struct device *dev, struct device *master,
 	hdmi->connector.funcs->destroy(&hdmi->connector);
 	hdmi->encoder.funcs->destroy(&hdmi->encoder);
 
-	clk_disable_unprepare(hdmi->pclk);
 	i2c_put_adapter(hdmi->ddc);
+	clk_disable_unprepare(hdmi->pclk);
 }
 
 static const struct component_ops inno_hdmi_ops = {
-- 
2.11.0

[PATCH v5 7/9] drm/bridge/synopsys: dw-hdmi: Add missing bridge detach

[Jeffy Chen]

We inited connector in attach(), so need a detach() to cleanup.

Also fix wrong use of dw_hdmi_remove() in bind().

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v5: None

 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index bf14214fa464..ff1b3d2b5d06 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1966,6 +1966,13 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
 	return 0;
 }
 
+static void dw_hdmi_bridge_detach(struct drm_bridge *bridge)
+{
+	struct dw_hdmi *hdmi = bridge->driver_private;
+
+	drm_connector_cleanup(&hdmi->connector);
+}
+
 static enum drm_mode_status
 dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
 			  const struct drm_display_mode *mode)
@@ -2022,6 +2029,7 @@ static void dw_hdmi_bridge_enable(struct drm_bridge *bridge)
 
 static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
 	.attach = dw_hdmi_bridge_attach,
+	.detach = dw_hdmi_bridge_detach,
 	.enable = dw_hdmi_bridge_enable,
 	.disable = dw_hdmi_bridge_disable,
 	.mode_set = dw_hdmi_bridge_mode_set,
@@ -2591,7 +2599,7 @@ int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
 
 	ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL);
 	if (ret) {
-		dw_hdmi_remove(pdev);
+		__dw_hdmi_remove(hdmi);
 		DRM_ERROR("Failed to initialize bridge with drm\n");
 		return ret;
 	}
-- 
2.11.0

[PATCH v5 8/9] drm/bridge/synopsys: dw-hdmi: Do not use device's drvdata

[Jeffy Chen]

Let plat drivers own the drvdata, so that they could cleanup resources
in their unbind().

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v5: None

 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c   | 43 ++++++++++-------------------
 drivers/gpu/drm/imx/dw_hdmi-imx.c           | 22 +++++++++------
 drivers/gpu/drm/meson/meson_dw_hdmi.c       | 20 ++++++++++----
 drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c      | 14 ++++++++--
 drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 23 ++++++++-------
 include/drm/bridge/dw_hdmi.h                | 17 ++++++------
 6 files changed, 77 insertions(+), 62 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index ff1b3d2b5d06..6fbfafc5832b 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2072,7 +2072,7 @@ static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id)
 	return ret;
 }
 
-void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
+void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
 {
 	mutex_lock(&hdmi->mutex);
 
@@ -2098,13 +2098,6 @@ void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
 	}
 	mutex_unlock(&hdmi->mutex);
 }
-
-void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense)
-{
-	struct dw_hdmi *hdmi = dev_get_drvdata(dev);
-
-	__dw_hdmi_setup_rx_sense(hdmi, hpd, rx_sense);
-}
 EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense);
 
 static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
@@ -2140,9 +2133,8 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
 	 */
 	if (intr_stat &
 	    (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
-		__dw_hdmi_setup_rx_sense(hdmi,
-					 phy_stat & HDMI_PHY_HPD,
-					 phy_stat & HDMI_PHY_RX_SENSE);
+		dw_hdmi_setup_rx_sense(hdmi, phy_stat & HDMI_PHY_HPD,
+				       phy_stat & HDMI_PHY_RX_SENSE);
 
 		if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
 			cec_notifier_set_phys_addr(hdmi->cec_notifier,
@@ -2512,8 +2504,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
 	if (hdmi->i2c)
 		dw_hdmi_i2c_init(hdmi);
 
-	platform_set_drvdata(pdev, hdmi);
-
 	return hdmi;
 
 err_iahb:
@@ -2559,25 +2549,23 @@ static void __dw_hdmi_remove(struct dw_hdmi *hdmi)
 /* -----------------------------------------------------------------------------
  * Probe/remove API, used from platforms based on the DRM bridge API.
  */
-int dw_hdmi_probe(struct platform_device *pdev,
-		  const struct dw_hdmi_plat_data *plat_data)
+struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
+			      const struct dw_hdmi_plat_data *plat_data)
 {
 	struct dw_hdmi *hdmi;
 
 	hdmi = __dw_hdmi_probe(pdev, plat_data);
 	if (IS_ERR(hdmi))
-		return PTR_ERR(hdmi);
+		return hdmi;
 
 	drm_bridge_add(&hdmi->bridge);
 
-	return 0;
+	return hdmi;
 }
 EXPORT_SYMBOL_GPL(dw_hdmi_probe);
 
-void dw_hdmi_remove(struct platform_device *pdev)
+void dw_hdmi_remove(struct dw_hdmi *hdmi)
 {
-	struct dw_hdmi *hdmi = platform_get_drvdata(pdev);
-
 	drm_bridge_remove(&hdmi->bridge);
 
 	__dw_hdmi_remove(hdmi);
@@ -2587,31 +2575,30 @@ EXPORT_SYMBOL_GPL(dw_hdmi_remove);
 /* -----------------------------------------------------------------------------
  * Bind/unbind API, used from platforms based on the component framework.
  */
-int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
-		 const struct dw_hdmi_plat_data *plat_data)
+struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev,
+			    struct drm_encoder *encoder,
+			    const struct dw_hdmi_plat_data *plat_data)
 {
 	struct dw_hdmi *hdmi;
 	int ret;
 
 	hdmi = __dw_hdmi_probe(pdev, plat_data);
 	if (IS_ERR(hdmi))
-		return PTR_ERR(hdmi);
+		return hdmi;
 
 	ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL);
 	if (ret) {
 		__dw_hdmi_remove(hdmi);
 		DRM_ERROR("Failed to initialize bridge with drm\n");
-		return ret;
+		return ERR_PTR(ret);
 	}
 
-	return 0;
+	return hdmi;
 }
 EXPORT_SYMBOL_GPL(dw_hdmi_bind);
 
-void dw_hdmi_unbind(struct device *dev)
+void dw_hdmi_unbind(struct dw_hdmi *hdmi)
 {
-	struct dw_hdmi *hdmi = dev_get_drvdata(dev);
-
 	__dw_hdmi_remove(hdmi);
 }
 EXPORT_SYMBOL_GPL(dw_hdmi_unbind);
diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
index b62763aa8706..b01d03e02ce0 100644
--- a/drivers/gpu/drm/imx/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -26,6 +26,8 @@ struct imx_hdmi {
 	struct device *dev;
 	struct drm_encoder encoder;
 	struct regmap *regmap;
+
+	struct dw_hdmi *hdmi;
 };
 
 static inline struct imx_hdmi *enc_to_imx_hdmi(struct drm_encoder *e)
@@ -239,22 +241,24 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
 	drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs,
 			 DRM_MODE_ENCODER_TMDS, NULL);
 
-	ret = dw_hdmi_bind(pdev, encoder, plat_data);
+	hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
+	if (IS_ERR(hdmi->hdmi)) {
+		encoder->funcs->destroy(encoder);
+		return PTR_ERR(hdmi->hdmi);
+	}
 
-	/*
-	 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
-	 * which would have called the encoder cleanup.  Do it manually.
-	 */
-	if (ret)
-		drm_encoder_cleanup(encoder);
+	dev_set_drvdata(dev, hdmi);
 
-	return ret;
+	return 0;
 }
 
 static void dw_hdmi_imx_unbind(struct device *dev, struct device *master,
 			       void *data)
 {
-	return dw_hdmi_unbind(dev);
+	struct imx_hdmi *hdmi = dev_get_drvdata(dev);
+
+	dw_hdmi_unbind(hdmi->hdmi);
+	hdmi->encoder.funcs->destroy(&hdmi->encoder);
 }
 
 static const struct component_ops dw_hdmi_imx_ops = {
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index cef414466f9f..fc29f69f7108 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -138,6 +138,8 @@ struct meson_dw_hdmi {
 	struct clk *hdmi_pclk;
 	struct clk *venci_clk;
 	u32 irq_stat;
+
+	struct dw_hdmi *hdmi;
 };
 #define encoder_to_meson_dw_hdmi(x) \
 	container_of(x, struct meson_dw_hdmi, encoder)
@@ -526,7 +528,7 @@ static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
 		if (stat & HDMITX_TOP_INTR_HPD_RISE)
 			hpd_connected = true;
 
-		dw_hdmi_setup_rx_sense(dw_hdmi->dev, hpd_connected,
+		dw_hdmi_setup_rx_sense(dw_hdmi->hdmi, hpd_connected,
 				       hpd_connected);
 
 		drm_helper_hpd_irq_event(dw_hdmi->encoder.dev);
@@ -865,9 +867,14 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
 	dw_plat_data->input_bus_format = MEDIA_BUS_FMT_YUV8_1X24;
 	dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709;
 
-	ret = dw_hdmi_bind(pdev, encoder, &meson_dw_hdmi->dw_plat_data);
-	if (ret)
-		return ret;
+	meson_dw_hdmi->hdmi = dw_hdmi_bind(pdev, encoder,
+					   &meson_dw_hdmi->dw_plat_data);
+	if (IS_ERR(meson_dw_hdmi->hdmi)) {
+		encoder->funcs->destroy(encoder);
+		return PTR_ERR(meson_dw_hdmi->hdmi);
+	}
+
+	dev_set_drvdata(dev, meson_dw_hdmi);
 
 	DRM_DEBUG_DRIVER("HDMI controller initialized\n");
 
@@ -877,7 +884,10 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
 static void meson_dw_hdmi_unbind(struct device *dev, struct device *master,
 				   void *data)
 {
-	dw_hdmi_unbind(dev);
+	struct meson_dw_hdmi *meson_dw_hdmi = dev_get_drvdata(dev);
+
+	dw_hdmi_unbind(meson_dw_hdmi->hdmi);
+	meson_dw_hdmi->encoder.funcs->destroy(&meson_dw_hdmi->encoder);
 }
 
 static const struct component_ops meson_dw_hdmi_ops = {
diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
index dc85b53d58ef..76210ae25094 100644
--- a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
+++ b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
@@ -68,12 +68,22 @@ static const struct dw_hdmi_plat_data rcar_dw_hdmi_plat_data = {
 
 static int rcar_dw_hdmi_probe(struct platform_device *pdev)
 {
-	return dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
+	struct dw_hdmi *hdmi;
+
+	hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
+	if (IS_ERR(hdmi))
+		return PTR_ERR(hdmi);
+
+	platform_set_drvdata(pdev, hdmi);
+
+	return 0;
 }
 
 static int rcar_dw_hdmi_remove(struct platform_device *pdev)
 {
-	dw_hdmi_remove(pdev);
+	struct dw_hdmi *hdmi = platform_get_drvdata(pdev);
+
+	dw_hdmi_remove(hdmi);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 1eb02a82fd91..791ab938f998 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -48,6 +48,8 @@ struct rockchip_hdmi {
 	const struct rockchip_hdmi_chip_data *chip_data;
 	struct clk *vpll_clk;
 	struct clk *grf_clk;
+
+	struct dw_hdmi *hdmi;
 };
 
 #define to_rockchip_hdmi(x)	container_of(x, struct rockchip_hdmi, x)
@@ -164,7 +166,6 @@ static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
 static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
 {
 	struct device_node *np = hdmi->dev->of_node;
-	int ret;
 
 	hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
 	if (IS_ERR(hdmi->regmap)) {
@@ -377,22 +378,24 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 	drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
 			 DRM_MODE_ENCODER_TMDS, NULL);
 
-	ret = dw_hdmi_bind(pdev, encoder, plat_data);
+	hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
+	if (IS_ERR(hdmi->hdmi)) {
+		encoder->funcs->destroy(encoder);
+		return PTR_ERR(hdmi->hdmi);
+	}
 
-	/*
-	 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
-	 * which would have called the encoder cleanup.  Do it manually.
-	 */
-	if (ret)
-		drm_encoder_cleanup(encoder);
+	dev_set_drvdata(dev, hdmi);
 
-	return ret;
+	return 0;
 }
 
 static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
 				    void *data)
 {
-	return dw_hdmi_unbind(dev);
+	struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
+
+	dw_hdmi_unbind(hdmi->hdmi);
+	hdmi->encoder.funcs->destroy(&hdmi->encoder);
 }
 
 static const struct component_ops dw_hdmi_rockchip_ops = {
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 182f83283e24..29b8900caaf7 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -143,14 +143,15 @@ struct dw_hdmi_plat_data {
 			     unsigned long mpixelclock);
 };
 
-int dw_hdmi_probe(struct platform_device *pdev,
-		  const struct dw_hdmi_plat_data *plat_data);
-void dw_hdmi_remove(struct platform_device *pdev);
-void dw_hdmi_unbind(struct device *dev);
-int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
-		 const struct dw_hdmi_plat_data *plat_data);
-
-void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense);
+struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
+			      const struct dw_hdmi_plat_data *plat_data);
+void dw_hdmi_remove(struct dw_hdmi *hdmi);
+void dw_hdmi_unbind(struct dw_hdmi *hdmi);
+struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev,
+			     struct drm_encoder *encoder,
+			     const struct dw_hdmi_plat_data *plat_data);
+
+void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense);
 
 void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
 void dw_hdmi_audio_enable(struct dw_hdmi *hdmi);
-- 
2.11.0

Re: [PATCH v5 8/9] drm/bridge/synopsys: dw-hdmi: Do not use device's drvdata

[Neil Armstrong]

On 18/10/2017 14:09, Jeffy Chen wrote:
> Let plat drivers own the drvdata, so that they could cleanup resources
> in their unbind().
> 
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> ---
> 
> Changes in v5: None
> 
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c   | 43 ++++++++++-------------------
>  drivers/gpu/drm/imx/dw_hdmi-imx.c           | 22 +++++++++------
>  drivers/gpu/drm/meson/meson_dw_hdmi.c       | 20 ++++++++++----
>  drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c      | 14 ++++++++--
>  drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 23 ++++++++-------
>  include/drm/bridge/dw_hdmi.h                | 17 ++++++------
>  6 files changed, 77 insertions(+), 62 deletions(-)
> 

[...]

> diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> index cef414466f9f..fc29f69f7108 100644
> --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
> +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> @@ -138,6 +138,8 @@ struct meson_dw_hdmi {
>  	struct clk *hdmi_pclk;
>  	struct clk *venci_clk;
>  	u32 irq_stat;
> +
> +	struct dw_hdmi *hdmi;
>  };
>  #define encoder_to_meson_dw_hdmi(x) \
>  	container_of(x, struct meson_dw_hdmi, encoder)
> @@ -526,7 +528,7 @@ static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
>  		if (stat & HDMITX_TOP_INTR_HPD_RISE)
>  			hpd_connected = true;
>  
> -		dw_hdmi_setup_rx_sense(dw_hdmi->dev, hpd_connected,
> +		dw_hdmi_setup_rx_sense(dw_hdmi->hdmi, hpd_connected,
>  				       hpd_connected);
>  
>  		drm_helper_hpd_irq_event(dw_hdmi->encoder.dev);
> @@ -865,9 +867,14 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>  	dw_plat_data->input_bus_format = MEDIA_BUS_FMT_YUV8_1X24;
>  	dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709;
>  
> -	ret = dw_hdmi_bind(pdev, encoder, &meson_dw_hdmi->dw_plat_data);
> -	if (ret)
> -		return ret;
> +	meson_dw_hdmi->hdmi = dw_hdmi_bind(pdev, encoder,
> +					   &meson_dw_hdmi->dw_plat_data);
> +	if (IS_ERR(meson_dw_hdmi->hdmi)) {
> +		encoder->funcs->destroy(encoder);
> +		return PTR_ERR(meson_dw_hdmi->hdmi);
> +	}
> +
> +	dev_set_drvdata(dev, meson_dw_hdmi);
>  
>  	DRM_DEBUG_DRIVER("HDMI controller initialized\n");
>  
> @@ -877,7 +884,10 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>  static void meson_dw_hdmi_unbind(struct device *dev, struct device *master,
>  				   void *data)
>  {
> -	dw_hdmi_unbind(dev);
> +	struct meson_dw_hdmi *meson_dw_hdmi = dev_get_drvdata(dev);
> +
> +	dw_hdmi_unbind(meson_dw_hdmi->hdmi);
> +	meson_dw_hdmi->encoder.funcs->destroy(&meson_dw_hdmi->encoder);
>  }
>  
>  static const struct component_ops meson_dw_hdmi_ops = {

[...]

For meson/meson_dw_hdmi.c :

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>

[PATCH v5 9/9] drm/rockchip: dw_hdmi: Fix error handling path

[Jeffy Chen]

Add missing clk_disable_unprepare() in bind()'s error handling path and
unbind().

Also inline clk_prepare_enable() with bind().

Fixes: 12b9f204e804 ("drm: bridge/dw_hdmi: add rockchip rk3288 support")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v5:
Add disable to unbind(), and inline clk_prepare_enable() with bind().

 drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 791ab938f998..e936dfe6c03d 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -193,13 +193,6 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
 		return PTR_ERR(hdmi->grf_clk);
 	}
 
-	ret = clk_prepare_enable(hdmi->vpll_clk);
-	if (ret) {
-		DRM_DEV_ERROR(hdmi->dev,
-			      "Failed to enable HDMI vpll: %d\n", ret);
-		return ret;
-	}
-
 	return 0;
 }
 
@@ -374,6 +367,13 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 		return ret;
 	}
 
+	ret = clk_prepare_enable(hdmi->vpll_clk);
+	if (ret) {
+		DRM_DEV_ERROR(hdmi->dev,
+			      "Failed to enable HDMI vpll: %d\n", ret);
+		return ret;
+	}
+
 	drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
 	drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
 			 DRM_MODE_ENCODER_TMDS, NULL);
@@ -381,6 +381,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 	hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
 	if (IS_ERR(hdmi->hdmi)) {
 		encoder->funcs->destroy(encoder);
+		clk_disable_unprepare(hdmi->vpll_clk);
 		return PTR_ERR(hdmi->hdmi);
 	}
 
@@ -396,6 +397,7 @@ static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
 
 	dw_hdmi_unbind(hdmi->hdmi);
 	hdmi->encoder.funcs->destroy(&hdmi->encoder);
+	clk_disable_unprepare(hdmi->vpll_clk);
 }
 
 static const struct component_ops dw_hdmi_rockchip_ops = {
-- 
2.11.0