drm/omap: squash omapdrm sub-modules into one

At the moment we have three different modules: omapdss-base, omapdss,
omapdrm. This setup is finally obsolete, as the last omapdrm specific
panel has been converted to DRM panel.

We can thus remove omapdss-base and omapdss, and just compile everything
into omapdrm.ko.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-51-tomi.valkeinen@ti.com

drivers/gpu/drm/omapdrm/Kconfig

@@ -5,12 +5,129 @@ config DRM_OMAP
 	depends on ARCH_OMAP2PLUS || ARCH_MULTIPLATFORM
 	select OMAP2_DSS
 	select DRM_KMS_HELPER
+	select VIDEOMODE_HELPERS
+	select HDMI
 	default n
 	help
 	  DRM display driver for OMAP2/3/4 based boards.
 
 if DRM_OMAP
 
-source "drivers/gpu/drm/omapdrm/dss/Kconfig"
+config OMAP2_DSS_DEBUG
+	bool "Debug support"
+	default n
+	help
+	  This enables printing of debug messages. Alternatively, debug messages
+	  can also be enabled by setting CONFIG_DYNAMIC_DEBUG and then setting
+	  appropriate flags in <debugfs>/dynamic_debug/control.
+
+config OMAP2_DSS_DEBUGFS
+	bool "Debugfs filesystem support"
+	depends on DEBUG_FS
+	default n
+	help
+	  This enables debugfs for OMAPDSS at <debugfs>/omapdss. This enables
+	  querying about clock configuration and register configuration of dss,
+	  dispc, dsi, hdmi and rfbi.
+
+config OMAP2_DSS_COLLECT_IRQ_STATS
+	bool "Collect DSS IRQ statistics"
+	depends on OMAP2_DSS_DEBUGFS
+	default n
+	help
+	  Collect DSS IRQ statistics, printable via debugfs.
+
+	  The statistics can be found from
+	  <debugfs>/omapdss/dispc_irq for DISPC interrupts, and
+	  <debugfs>/omapdss/dsi_irq for DSI interrupts.
+
+config OMAP2_DSS_DPI
+	bool "DPI support"
+	default y
+	help
+	  DPI Interface. This is the Parallel Display Interface.
+
+config OMAP2_DSS_VENC
+	bool "VENC support"
+	default y
+	help
+	  OMAP Video Encoder support for S-Video and composite TV-out.
+
+config OMAP2_DSS_HDMI_COMMON
+	bool
+
+config OMAP4_DSS_HDMI
+	bool "HDMI support for OMAP4"
+	default y
+	select OMAP2_DSS_HDMI_COMMON
+	help
+	  HDMI support for OMAP4 based SoCs.
+
+config OMAP4_DSS_HDMI_CEC
+	bool "Enable HDMI CEC support for OMAP4"
+	depends on OMAP4_DSS_HDMI
+	select CEC_CORE
+	default y
+	help
+	  When selected the HDMI transmitter will support the CEC feature.
+
+config OMAP5_DSS_HDMI
+	bool "HDMI support for OMAP5"
+	default n
+	select OMAP2_DSS_HDMI_COMMON
+	help
+	  HDMI Interface for OMAP5 and similar cores. This adds the High
+	  Definition Multimedia Interface. See http://www.hdmi.org/ for HDMI
+	  specification.
+
+config OMAP2_DSS_SDI
+	bool "SDI support"
+	default n
+	help
+	  SDI (Serial Display Interface) support.
+
+	  SDI is a high speed one-way display serial bus between the host
+	  processor and a display.
+
+config OMAP2_DSS_DSI
+	bool "DSI support"
+	default n
+	select DRM_MIPI_DSI
+	help
+	  MIPI DSI (Display Serial Interface) support.
+
+	  DSI is a high speed half-duplex serial interface between the host
+	  processor and a peripheral, such as a display or a framebuffer chip.
+
+	  See http://www.mipi.org/ for DSI specifications.
+
+config OMAP2_DSS_MIN_FCK_PER_PCK
+	int "Minimum FCK/PCK ratio (for scaling)"
+	range 0 32
+	default 0
+	help
+	  This can be used to adjust the minimum FCK/PCK ratio.
+
+	  With this you can make sure that DISPC FCK is at least
+	  n x PCK. Video plane scaling requires higher FCK than
+	  normally.
+
+	  If this is set to 0, there's no extra constraint on the
+	  DISPC FCK. However, the FCK will at minimum be
+	  2xPCK (if active matrix) or 3xPCK (if passive matrix).
+
+	  Max FCK is 173MHz, so this doesn't work if your PCK
+	  is very high.
+
+config OMAP2_DSS_SLEEP_AFTER_VENC_RESET
+	bool "Sleep 20ms after VENC reset"
+	default y
+	help
+	  There is a 20ms sleep after VENC reset which seemed to fix the
+	  reset. The reason for the bug is unclear, and it's also unclear
+	  on what platforms this happens.
+
+	  This option enables the sleep, and is enabled by default. You can
+	  disable the sleep if it doesn't cause problems on your platform.
 
 endif

drivers/gpu/drm/omapdrm/Makefile

@@ -4,8 +4,6 @@
 # Direct Rendering Infrastructure (DRI)
 #
 
-obj-y += dss/
-
 omapdrm-y := omap_drv.o \
 	omap_irq.o \
 	omap_debugfs.o \
@@ -20,4 +18,17 @@ omapdrm-y := omap_drv.o \
 
 omapdrm-$(CONFIG_DRM_FBDEV_EMULATION) += omap_fbdev.o
 
-obj-$(CONFIG_DRM_OMAP)	+= omapdrm.o
+omapdrm-y += dss/base.o dss/display.o dss/output.o dss/dss.o dss/dispc.o \
+		dss/dispc_coefs.o dss/pll.o dss/video-pll.o
+omapdrm-$(CONFIG_OMAP2_DSS_DPI) += dss/dpi.o
+omapdrm-$(CONFIG_OMAP2_DSS_VENC) += dss/venc.o
+omapdrm-$(CONFIG_OMAP2_DSS_SDI) += dss/sdi.o
+omapdrm-$(CONFIG_OMAP2_DSS_DSI) += dss/dsi.o
+omapdrm-$(CONFIG_OMAP2_DSS_HDMI_COMMON) += dss/hdmi_common.o dss/hdmi_wp.o \
+		dss/hdmi_pll.o dss/hdmi_phy.o
+omapdrm-$(CONFIG_OMAP4_DSS_HDMI) += dss/hdmi4.o dss/hdmi4_core.o
+omapdrm-$(CONFIG_OMAP4_DSS_HDMI_CEC) += dss/hdmi4_cec.o
+omapdrm-$(CONFIG_OMAP5_DSS_HDMI) += dss/hdmi5.o dss/hdmi5_core.o
+ccflags-$(CONFIG_OMAP2_DSS_DEBUG) += -DDEBUG
+
+obj-$(CONFIG_DRM_OMAP) += omapdrm.o

drivers/gpu/drm/omapdrm/dss/Kconfig

-# SPDX-License-Identifier: GPL-2.0-only
-config OMAP_DSS_BASE
-	tristate
-
-menuconfig OMAP2_DSS
-	tristate "OMAP2+ Display Subsystem support"
-	select OMAP_DSS_BASE
-	select VIDEOMODE_HELPERS
-	select HDMI
-	help
-	  OMAP2+ Display Subsystem support.
-
-if OMAP2_DSS
-
-config OMAP2_DSS_DEBUG
-	bool "Debug support"
-	default n
-	help
-	  This enables printing of debug messages. Alternatively, debug messages
-	  can also be enabled by setting CONFIG_DYNAMIC_DEBUG and then setting
-	  appropriate flags in <debugfs>/dynamic_debug/control.
-
-config OMAP2_DSS_DEBUGFS
-	bool "Debugfs filesystem support"
-	depends on DEBUG_FS
-	default n
-	help
-	  This enables debugfs for OMAPDSS at <debugfs>/omapdss. This enables
-	  querying about clock configuration and register configuration of dss,
-	  dispc, dsi, hdmi and rfbi.
-
-config OMAP2_DSS_COLLECT_IRQ_STATS
-	bool "Collect DSS IRQ statistics"
-	depends on OMAP2_DSS_DEBUGFS
-	default n
-	help
-	  Collect DSS IRQ statistics, printable via debugfs.
-
-	  The statistics can be found from
-	  <debugfs>/omapdss/dispc_irq for DISPC interrupts, and
-	  <debugfs>/omapdss/dsi_irq for DSI interrupts.
-
-config OMAP2_DSS_DPI
-	bool "DPI support"
-	default y
-	help
-	  DPI Interface. This is the Parallel Display Interface.
-
-config OMAP2_DSS_VENC
-	bool "VENC support"
-	default y
-	help
-	  OMAP Video Encoder support for S-Video and composite TV-out.
-
-config OMAP2_DSS_HDMI_COMMON
-	bool
-
-config OMAP4_DSS_HDMI
-	bool "HDMI support for OMAP4"
-	default y
-	select OMAP2_DSS_HDMI_COMMON
-	help
-	  HDMI support for OMAP4 based SoCs.
-
-config OMAP4_DSS_HDMI_CEC
-	bool "Enable HDMI CEC support for OMAP4"
-	depends on OMAP4_DSS_HDMI
-	select CEC_CORE
-	default y
-	help
-	  When selected the HDMI transmitter will support the CEC feature.
-
-config OMAP5_DSS_HDMI
-	bool "HDMI support for OMAP5"
-	default n
-	select OMAP2_DSS_HDMI_COMMON
-	help
-	  HDMI Interface for OMAP5 and similar cores. This adds the High
-	  Definition Multimedia Interface. See https://www.hdmi.org/ for HDMI
-	  specification.
-
-config OMAP2_DSS_SDI
-	bool "SDI support"
-	default n
-	help
-	  SDI (Serial Display Interface) support.
-
-	  SDI is a high speed one-way display serial bus between the host
-	  processor and a display.
-
-config OMAP2_DSS_DSI
-	bool "DSI support"
-	default n
-	select DRM_MIPI_DSI
-	help
-	  MIPI DSI (Display Serial Interface) support.
-
-	  DSI is a high speed half-duplex serial interface between the host
-	  processor and a peripheral, such as a display or a framebuffer chip.
-
-	  See https://www.mipi.org/ for DSI specifications.
-
-config OMAP2_DSS_MIN_FCK_PER_PCK
-	int "Minimum FCK/PCK ratio (for scaling)"
-	range 0 32
-	default 0
-	help
-	  This can be used to adjust the minimum FCK/PCK ratio.
-
-	  With this you can make sure that DISPC FCK is at least
-	  n x PCK. Video plane scaling requires higher FCK than
-	  normally.
-
-	  If this is set to 0, there's no extra constraint on the
-	  DISPC FCK. However, the FCK will at minimum be
-	  2xPCK (if active matrix) or 3xPCK (if passive matrix).
-
-	  Max FCK is 173MHz, so this doesn't work if your PCK
-	  is very high.
-
-config OMAP2_DSS_SLEEP_AFTER_VENC_RESET
-	bool "Sleep 20ms after VENC reset"
-	default y
-	help
-	  There is a 20ms sleep after VENC reset which seemed to fix the
-	  reset. The reason for the bug is unclear, and it's also unclear
-	  on what platforms this happens.
-
-	  This option enables the sleep, and is enabled by default. You can
-	  disable the sleep if it doesn't cause problems on your platform.
-
-endif

drivers/gpu/drm/omapdrm/dss/Makefile

-# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_OMAP_DSS_BASE) += omapdss-base.o
-omapdss-base-y := base.o display.o output.o
-
-obj-$(CONFIG_OMAP2_DSS) += omapdss.o
-# Core DSS files
-omapdss-y := dss.o dispc.o dispc_coefs.o \
-	pll.o video-pll.o
-omapdss-$(CONFIG_OMAP2_DSS_DPI) += dpi.o
-omapdss-$(CONFIG_OMAP2_DSS_VENC) += venc.o
-omapdss-$(CONFIG_OMAP2_DSS_SDI) += sdi.o
-omapdss-$(CONFIG_OMAP2_DSS_DSI) += dsi.o
-omapdss-$(CONFIG_OMAP2_DSS_HDMI_COMMON) += hdmi_common.o hdmi_wp.o hdmi_pll.o \
-	hdmi_phy.o
-omapdss-$(CONFIG_OMAP4_DSS_HDMI) += hdmi4.o hdmi4_core.o
-omapdss-$(CONFIG_OMAP4_DSS_HDMI_CEC) += hdmi4_cec.o
-omapdss-$(CONFIG_OMAP5_DSS_HDMI) += hdmi5.o hdmi5_core.o
-ccflags-$(CONFIG_OMAP2_DSS_DEBUG) += -DDEBUG

drivers/gpu/drm/omapdrm/dss/base.c

@@ -20,14 +20,11 @@ struct dispc_device *dispc_get_dispc(struct dss_device *dss)
 {
 	return dss->dispc;
 }
-EXPORT_SYMBOL(dispc_get_dispc);
 
 const struct dispc_ops *dispc_get_ops(struct dss_device *dss)
 {
 	return dss->dispc_ops;
 }
-EXPORT_SYMBOL(dispc_get_ops);
-
 
 /* -----------------------------------------------------------------------------
  * OMAP DSS Devices Handling
@@ -42,7 +39,6 @@ void omapdss_device_register(struct omap_dss_device *dssdev)
 	list_add_tail(&dssdev->list, &omapdss_devices_list);
 	mutex_unlock(&omapdss_devices_lock);
 }
-EXPORT_SYMBOL_GPL(omapdss_device_register);
 
 void omapdss_device_unregister(struct omap_dss_device *dssdev)
 {
@@ -50,7 +46,6 @@ void omapdss_device_unregister(struct omap_dss_device *dssdev)
 	list_del(&dssdev->list);
 	mutex_unlock(&omapdss_devices_lock);
 }
-EXPORT_SYMBOL_GPL(omapdss_device_unregister);
 
 static bool omapdss_device_is_registered(struct device_node *node)
 {
@@ -72,24 +67,16 @@ static bool omapdss_device_is_registered(struct device_node *node)
 
 struct omap_dss_device *omapdss_device_get(struct omap_dss_device *dssdev)
 {
-	if (!try_module_get(dssdev->owner))
+	if (get_device(dssdev->dev) == NULL)
 		return NULL;
 
-	if (get_device(dssdev->dev) == NULL) {
-		module_put(dssdev->owner);
-		return NULL;
-	}
-
 	return dssdev;
 }
-EXPORT_SYMBOL(omapdss_device_get);
 
 void omapdss_device_put(struct omap_dss_device *dssdev)
 {
 	put_device(dssdev->dev);
-	module_put(dssdev->owner);
 }
-EXPORT_SYMBOL(omapdss_device_put);
 
 struct omap_dss_device *omapdss_find_device_by_node(struct device_node *node)
 {
@@ -150,7 +137,6 @@ struct omap_dss_device *omapdss_device_next_output(struct omap_dss_device *from)
 	mutex_unlock(&omapdss_devices_lock);
 	return dssdev;
 }
-EXPORT_SYMBOL(omapdss_device_next_output);
 
 static bool omapdss_device_is_connected(struct omap_dss_device *dssdev)
 {
@@ -181,7 +167,6 @@ int omapdss_device_connect(struct dss_device *dss,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(omapdss_device_connect);
 
 void omapdss_device_disconnect(struct omap_dss_device *src,
 			       struct omap_dss_device *dst)
@@ -204,7 +189,6 @@ void omapdss_device_disconnect(struct omap_dss_device *src,
 
 	dst->dss = NULL;
 }
-EXPORT_SYMBOL_GPL(omapdss_device_disconnect);
 
 /* -----------------------------------------------------------------------------
  * Components Handling
@@ -290,7 +274,6 @@ void omapdss_gather_components(struct device *dev)
 	for_each_available_child_of_node(dev->of_node, child)
 		omapdss_walk_device(dev, child, true);
 }
-EXPORT_SYMBOL(omapdss_gather_components);
 
 static bool omapdss_component_is_loaded(struct omapdss_comp_node *comp)
 {
@@ -315,8 +298,3 @@ bool omapdss_stack_is_ready(void)
 
 	return true;
 }
-EXPORT_SYMBOL(omapdss_stack_is_ready);
-
-MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
-MODULE_DESCRIPTION("OMAP Display Subsystem Base");
-MODULE_LICENSE("GPL v2");

drivers/gpu/drm/omapdrm/dss/display.c

@@ -38,7 +38,6 @@ void omapdss_display_init(struct omap_dss_device *dssdev)
 		dssdev->name = devm_kasprintf(dssdev->dev, GFP_KERNEL,
 					      "display%u", id);
 }
-EXPORT_SYMBOL_GPL(omapdss_display_init);
 
 int omapdss_display_get_modes(struct drm_connector *connector,
 			      const struct videomode *vm)
@@ -57,4 +56,3 @@ int omapdss_display_get_modes(struct drm_connector *connector,
 
 	return 1;
 }
-EXPORT_SYMBOL_GPL(omapdss_display_get_modes);

drivers/gpu/drm/omapdrm/dss/dss.c

@@ -1641,21 +1641,14 @@ static struct platform_driver * const omap_dss_drivers[] = {
 #endif
 };
 
-static int __init omap_dss_init(void)
+int __init omap_dss_init(void)
 {
 	return platform_register_drivers(omap_dss_drivers,
 					 ARRAY_SIZE(omap_dss_drivers));
 }
 
-static void __exit omap_dss_exit(void)
+void omap_dss_exit(void)
 {
 	platform_unregister_drivers(omap_dss_drivers,
 				    ARRAY_SIZE(omap_dss_drivers));
 }
-
-module_init(omap_dss_init);
-module_exit(omap_dss_exit);
-
-MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
-MODULE_DESCRIPTION("OMAP2/3/4/5 Display Subsystem");
-MODULE_LICENSE("GPL v2");

drivers/gpu/drm/omapdrm/dss/omapdss.h

@@ -461,4 +461,7 @@ const struct dispc_ops *dispc_get_ops(struct dss_device *dss);
 bool omapdss_stack_is_ready(void);
 void omapdss_gather_components(struct device *dev);
 
+int omap_dss_init(void);
+void omap_dss_exit(void);
+
 #endif /* __OMAP_DRM_DSS_H */

drivers/gpu/drm/omapdrm/dss/output.c

@@ -73,7 +73,6 @@ int omapdss_device_init_output(struct omap_dss_device *out,
 	omapdss_device_cleanup_output(out);
 	return ret;
 }
-EXPORT_SYMBOL(omapdss_device_init_output);
 
 void omapdss_device_cleanup_output(struct omap_dss_device *out)
 {
@@ -81,7 +80,6 @@ void omapdss_device_cleanup_output(struct omap_dss_device *out)
 		drm_panel_bridge_remove(out->next_bridge ?
 					out->next_bridge : out->bridge);
 }
-EXPORT_SYMBOL(omapdss_device_cleanup_output);
 
 int dss_install_mgr_ops(struct dss_device *dss,
 			const struct dss_mgr_ops *mgr_ops,
@@ -95,14 +93,12 @@ int dss_install_mgr_ops(struct dss_device *dss,
 
 	return 0;
 }
-EXPORT_SYMBOL(dss_install_mgr_ops);
 
 void dss_uninstall_mgr_ops(struct dss_device *dss)
 {
 	dss->mgr_ops = NULL;
 	dss->mgr_ops_priv = NULL;
 }
-EXPORT_SYMBOL(dss_uninstall_mgr_ops);
 
 void dss_mgr_set_timings(struct omap_dss_device *dssdev,
 			 const struct videomode *vm)
@@ -110,7 +106,6 @@ void dss_mgr_set_timings(struct omap_dss_device *dssdev,
 	dssdev->dss->mgr_ops->set_timings(dssdev->dss->mgr_ops_priv,
 					  dssdev->dispc_channel, vm);
 }
-EXPORT_SYMBOL(dss_mgr_set_timings);
 
 void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
 		const struct dss_lcd_mgr_config *config)
@@ -118,28 +113,24 @@ void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
 	dssdev->dss->mgr_ops->set_lcd_config(dssdev->dss->mgr_ops_priv,
 					     dssdev->dispc_channel, config);
 }
-EXPORT_SYMBOL(dss_mgr_set_lcd_config);
 
 int dss_mgr_enable(struct omap_dss_device *dssdev)
 {
 	return dssdev->dss->mgr_ops->enable(dssdev->dss->mgr_ops_priv,
 					    dssdev->dispc_channel);
 }
-EXPORT_SYMBOL(dss_mgr_enable);
 
 void dss_mgr_disable(struct omap_dss_device *dssdev)
 {
 	dssdev->dss->mgr_ops->disable(dssdev->dss->mgr_ops_priv,
 				      dssdev->dispc_channel);
 }
-EXPORT_SYMBOL(dss_mgr_disable);
 
 void dss_mgr_start_update(struct omap_dss_device *dssdev)
 {
 	dssdev->dss->mgr_ops->start_update(dssdev->dss->mgr_ops_priv,
 					   dssdev->dispc_channel);
 }
-EXPORT_SYMBOL(dss_mgr_start_update);
 
 int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
 		void (*handler)(void *), void *data)
@@ -150,7 +141,6 @@ int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
 							dssdev->dispc_channel,
 							handler, data);
 }
-EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
 
 void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
 		void (*handler)(void *), void *data)
@@ -161,4 +151,3 @@ void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
 						   dssdev->dispc_channel,
 						   handler, data);
 }
-EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);

drivers/gpu/drm/omapdrm/omap_drv.c

@@ -732,9 +732,21 @@ static struct platform_driver * const drivers[] = {
 
 static int __init omap_drm_init(void)
 {
+	int r;
+
 	DBG("init");
 
-	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
+	r = omap_dss_init();
+	if (r)
+		return r;
+
+	r = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
+	if (r) {
+		omap_dss_exit();
+		return r;
+	}
+
+	return 0;
 }
 
 static void __exit omap_drm_fini(void)
@@ -742,13 +754,15 @@ static void __exit omap_drm_fini(void)
 	DBG("fini");
 
 	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
+
+	omap_dss_exit();
 }
 
-/* need late_initcall() so we load after dss_driver's are loaded */
-late_initcall(omap_drm_init);
+module_init(omap_drm_init);
 module_exit(omap_drm_fini);
 
 MODULE_AUTHOR("Rob Clark <rob@ti.com>");
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
 MODULE_DESCRIPTION("OMAP DRM Display Driver");
 MODULE_ALIAS("platform:" DRIVER_NAME);
 MODULE_LICENSE("GPL v2");