drm/omap: dss: Remove panel devices list

The panel devices list isn't used anymore, all panel devices are
accessed through the global devices list. Remove it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

13 files changed, 31 insertions, 123 deletions

diff --git a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c
index ae3976a97ce2..49720117da15 100644
--- a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c
+++ b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c
@@ -154,7 +154,6 @@ static int tvc_probe(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata;
 	struct omap_dss_device *dssdev;
-	int r;
 
 	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
 	if (!ddata)
@@ -172,11 +171,7 @@ static int tvc_probe(struct platform_device *pdev)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&pdev->dev, "Failed to register panel\n");
-		return r;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 }
@@ -186,7 +181,7 @@ static int __exit tvc_remove(struct platform_device *pdev)
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
 
-	omapdss_unregister_display(&ddata->dssdev);
+	omapdss_device_unregister(&ddata->dssdev);
 
 	tvc_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
index 5e3ef5e9e9f6..7876e61bf63e 100644
--- a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
+++ b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
@@ -391,19 +391,9 @@ static int dvic_probe(struct platform_device *pdev)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&pdev->dev, "Failed to register panel\n");
-		goto err_reg;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
-
-err_reg:
-	i2c_put_adapter(ddata->i2c_adapter);
-	mutex_destroy(&ddata->hpd_lock);
-
-	return r;
 }
 
 static int __exit dvic_remove(struct platform_device *pdev)
@@ -411,7 +401,7 @@ static int __exit dvic_remove(struct platform_device *pdev)
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
 
-	omapdss_unregister_display(&ddata->dssdev);
+	omapdss_device_unregister(&ddata->dssdev);
 
 	dvic_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
index cf64742d8646..5e07a8479cfc 100644
--- a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
+++ b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
@@ -351,11 +351,7 @@ static int hdmic_probe(struct platform_device *pdev)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&pdev->dev, "Failed to register panel\n");
-		return r;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 }
@@ -365,7 +361,7 @@ static int __exit hdmic_remove(struct platform_device *pdev)
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
 
-	omapdss_unregister_display(&ddata->dssdev);
+	omapdss_device_unregister(&ddata->dssdev);
 
 	hdmic_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
index c4c529531243..3e2bca737de0 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
@@ -219,11 +219,7 @@ static int panel_dpi_probe(struct platform_device *pdev)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&pdev->dev, "Failed to register panel\n");
-		return r;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 }
@@ -233,7 +229,7 @@ static int __exit panel_dpi_remove(struct platform_device *pdev)
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	panel_dpi_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index 479ce69fd8d8..0614db1c7366 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -1329,11 +1329,7 @@ static int dsicm_probe(struct platform_device *pdev)
 		OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(dev, "Failed to register panel\n");
-		goto err_reg;
-	}
+	omapdss_device_register(dssdev);
 
 	mutex_init(&ddata->lock);
 
@@ -1404,7 +1400,7 @@ static int __exit dsicm_remove(struct platform_device *pdev)
 
 	dev_dbg(&pdev->dev, "remove\n");
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	dsicm_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
index fb0afd5adf48..0698b64e5bdc 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
@@ -271,11 +271,7 @@ static int lb035q02_panel_spi_probe(struct spi_device *spi)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&spi->dev, "Failed to register panel\n");
-		return r;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 }
@@ -285,7 +281,7 @@ static int lb035q02_panel_spi_remove(struct spi_device *spi)
 	struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	lb035q02_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
index 6ae113871032..da34c35009dd 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
@@ -294,11 +294,7 @@ static int nec_8048_probe(struct spi_device *spi)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&spi->dev, "Failed to register panel\n");
-		return r;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 }
@@ -310,7 +306,7 @@ static int nec_8048_remove(struct spi_device *spi)
 
 	dev_dbg(&ddata->spi->dev, "%s\n", __func__);
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	nec_8048_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
index fb986b586749..d92ee6f1ae7f 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
@@ -270,11 +270,7 @@ static int sharp_ls_probe(struct platform_device *pdev)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&pdev->dev, "Failed to register panel\n");
-		return r;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 }
@@ -284,7 +280,7 @@ static int __exit sharp_ls_remove(struct platform_device *pdev)
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	sharp_ls_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c b/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c
index e110187ff911..4602f7cd1b53 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c
@@ -733,7 +733,7 @@ static int acx565akm_probe(struct spi_device *spi)
 		r = devm_gpio_request_one(&spi->dev, ddata->reset_gpio,
 				GPIOF_OUT_INIT_LOW, "lcd reset");
 		if (r)
-			goto err_gpio;
+			return r;
 	}
 
 	if (gpio_is_valid(ddata->reset_gpio))
@@ -754,7 +754,7 @@ static int acx565akm_probe(struct spi_device *spi)
 
 	if (r) {
 		dev_err(&spi->dev, "%s panel detect error\n", __func__);
-		goto err_detect;
+		return r;
 	}
 
 	memset(&props, 0, sizeof(props));
@@ -764,17 +764,15 @@ static int acx565akm_probe(struct spi_device *spi)
 
 	bldev = backlight_device_register("acx565akm", &ddata->spi->dev,
 			ddata, &acx565akm_bl_ops, &props);
-	if (IS_ERR(bldev)) {
-		r = PTR_ERR(bldev);
-		goto err_reg_bl;
-	}
+	if (IS_ERR(bldev))
+		return PTR_ERR(bldev);
 	ddata->bl_dev = bldev;
 	if (ddata->has_cabc) {
 		r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
 		if (r) {
 			dev_err(&bldev->dev,
 				"%s failed to create sysfs files\n", __func__);
-			goto err_sysfs;
+			goto err_backlight_unregister;
 		}
 		ddata->cabc_mode = get_hw_cabc_mode(ddata);
 	}
@@ -801,21 +799,12 @@ static int acx565akm_probe(struct spi_device *spi)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&spi->dev, "Failed to register panel\n");
-		goto err_reg;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 
-err_reg:
-	sysfs_remove_group(&bldev->dev.kobj, &bldev_attr_group);
-err_sysfs:
+err_backlight_unregister:
 	backlight_device_unregister(bldev);
-err_reg_bl:
-err_detect:
-err_gpio:
 	return r;
 }
 
@@ -829,7 +818,7 @@ static int acx565akm_remove(struct spi_device *spi)
 	sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group);
 	backlight_device_unregister(ddata->bl_dev);
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	acx565akm_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
index c44e1b430a0e..b7c95b903d03 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
@@ -395,11 +395,7 @@ static int td028ttec1_panel_probe(struct spi_device *spi)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&spi->dev, "Failed to register panel\n");
-		return r;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
 }
@@ -411,7 +407,7 @@ static int td028ttec1_panel_remove(struct spi_device *spi)
 
 	dev_dbg(&ddata->spi_dev->dev, "%s\n", __func__);
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	td028ttec1_panel_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
index 0cb70abb6e5d..e6b2381b971c 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
@@ -509,8 +509,7 @@ static int tpo_td043_probe(struct spi_device *spi)
 	ddata->vcc_reg = devm_regulator_get(&spi->dev, "vcc");
 	if (IS_ERR(ddata->vcc_reg)) {
 		dev_err(&spi->dev, "failed to get LCD VCC regulator\n");
-		r = PTR_ERR(ddata->vcc_reg);
-		goto err_regulator;
+		return PTR_ERR(ddata->vcc_reg);
 	}
 
 	if (gpio_is_valid(ddata->nreset_gpio)) {
@@ -519,14 +518,14 @@ static int tpo_td043_probe(struct spi_device *spi)
 				"lcd reset");
 		if (r < 0) {
 			dev_err(&spi->dev, "couldn't request reset GPIO\n");
-			goto err_gpio_req;
+			return r;
 		}
 	}
 
 	r = sysfs_create_group(&spi->dev.kobj, &tpo_td043_attr_group);
 	if (r) {
 		dev_err(&spi->dev, "failed to create sysfs files\n");
-		goto err_sysfs;
+		return r;
 	}
 
 	ddata->vm = tpo_td043_vm;
@@ -538,20 +537,9 @@ static int tpo_td043_probe(struct spi_device *spi)
 	dssdev->owner = THIS_MODULE;
 
 	omapdss_display_init(dssdev);
-	r = omapdss_register_display(dssdev);
-	if (r) {
-		dev_err(&spi->dev, "Failed to register panel\n");
-		goto err_reg;
-	}
+	omapdss_device_register(dssdev);
 
 	return 0;
-
-err_reg:
-	sysfs_remove_group(&spi->dev.kobj, &tpo_td043_attr_group);
-err_sysfs:
-err_gpio_req:
-err_regulator:
-	return r;
 }
 
 static int tpo_td043_remove(struct spi_device *spi)
@@ -561,7 +549,7 @@ static int tpo_td043_remove(struct spi_device *spi)
 
 	dev_dbg(&ddata->spi->dev, "%s\n", __func__);
 
-	omapdss_unregister_display(dssdev);
+	omapdss_device_unregister(dssdev);
 
 	tpo_td043_disable(dssdev);
 	omapdss_device_disconnect(dssdev, NULL);
diff --git a/drivers/gpu/drm/omapdrm/dss/display.c b/drivers/gpu/drm/omapdrm/dss/display.c
index c641993c7d17..178d88841e0c 100644
--- a/drivers/gpu/drm/omapdrm/dss/display.c
+++ b/drivers/gpu/drm/omapdrm/dss/display.c
@@ -28,8 +28,6 @@
 
 #include "omapdss.h"
 
-static LIST_HEAD(panel_list);
-static DEFINE_MUTEX(panel_list_mutex);
 static int disp_num_counter;
 
 void omapdss_display_init(struct omap_dss_device *dssdev)
@@ -55,27 +53,6 @@ void omapdss_display_init(struct omap_dss_device *dssdev)
 }
 EXPORT_SYMBOL_GPL(omapdss_display_init);
 
-int omapdss_register_display(struct omap_dss_device *dssdev)
-{
-	mutex_lock(&panel_list_mutex);
-	list_add_tail(&dssdev->panel_list, &panel_list);
-	mutex_unlock(&panel_list_mutex);
-
-	omapdss_device_register(dssdev);
-	return 0;
-}
-EXPORT_SYMBOL(omapdss_register_display);
-
-void omapdss_unregister_display(struct omap_dss_device *dssdev)
-{
-	mutex_lock(&panel_list_mutex);
-	list_del(&dssdev->panel_list);
-	mutex_unlock(&panel_list_mutex);
-
-	omapdss_device_register(dssdev);
-}
-EXPORT_SYMBOL(omapdss_unregister_display);
-
 struct omap_dss_device *omap_dss_get_device(struct omap_dss_device *dssdev)
 {
 	if (!try_module_get(dssdev->owner))
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index e42821583b91..5f71f6885991 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -395,7 +395,6 @@ struct omap_dss_device {
 	struct omap_dss_device *dst;
 
 	struct list_head list;
-	struct list_head panel_list;
 
 	unsigned int alias_id;
 
@@ -488,8 +487,6 @@ static inline bool omapdss_is_initialized(void)
 }
 
 void omapdss_display_init(struct omap_dss_device *dssdev);
-int omapdss_register_display(struct omap_dss_device *dssdev);
-void omapdss_unregister_display(struct omap_dss_device *dssdev);
 #define for_each_dss_display(d) \
 	while ((d = omapdss_device_get_next(d, true)) != NULL)