Merge tag 'omapdrm-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-next

omapdrm changes for 4.12

Main changes include:

* Add support for render nodes.
* Refactor omapdss code to allow multiple DISPC implementations. This is pre-work for DSS6 support.
* Fix replication logic bug, which caused RGB565 fb to be shown too dark on a 24bit display.
* Improve detection of display stack readiness, which should remove the probe order issues.
* Link panel-dpi with its backlight, so that they are turned on/off in sync.
* Fix possibly incorrect setup of sync and data-enable signals.
* Get rid of DRM_OMAP_NUM_CRTCS config option.

* tag 'omapdrm-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (34 commits)
  drm/omap: Major omap_modeset_init() cleanup
  drm/omap: Remove the obsolete #define omap_plane _omap_plane hack
  drm/omap: Fix one ugly indentation style break left by coccinelle
  drm/omap: Rename enum omap_plane to enum omap_plane_id
  drm/omap: Get rid of DRM_OMAP_NUM_CRTCS config option
  drm/omap: fix crash on module unload
  drm/omap: use drm_atomic_helper_shutdown()
  drm/omap: fix display SYNC/DE flags
  drm/omap: dispc: improve debug print of display flags
  drm/omap: displays: panel-dpi: Support for handling backlight devices
  drm/omap: poll only connectors where the connect/disconnect can be checked
  drm/omap: display: Add displays in sorted order to the panel_list
  drm/omap: Use omapdss_stack_is_ready() to check that the display stack is up
  drm/omap: dss: Support for detecting display stack readiness
  drm/omap: dss: Functions to check components in the display/output list
  drm/omap: fix replication logic
  drm/omap: remove unused dispc_wb_enable & dispc_wb_is_enabled
  drm/omap: remove all EXPORT_SYMBOLs from dispc.c
  drm/omap: use dispc_ops
  drm/omap: fill dispc_ops
  ...

Documentation/devicetree/bindings/display/panel/panel-dpi.txt

@@ -9,6 +9,7 @@ Optional properties:
 - enable-gpios: panel enable gpio
 - reset-gpios: GPIO to control the RESET pin
 - vcc-supply: phandle of regulator that will be used to enable power to the display
+- backlight: phandle of the backlight device
 
 Required nodes:
 - "panel-timing" containing video timings
@@ -22,6 +23,8 @@ lcd0: display@0 {
         compatible = "samsung,lte430wq-f0c", "panel-dpi";
         label = "lcd";
 
+        backlight = <&backlight>;
+
         port {
             lcd_in: endpoint {
                     remote-endpoint = <&dpi_out>;

drivers/gpu/drm/omapdrm/Kconfig

@@ -10,15 +10,6 @@ config DRM_OMAP
 
 if DRM_OMAP
 
-config DRM_OMAP_NUM_CRTCS
-	int "Number of CRTCs"
-	range 1 10
-	default 1  if ARCH_OMAP2 || ARCH_OMAP3
-	default 2  if ARCH_OMAP4
-	help
-	  Select the number of video overlays which can be used as framebuffers.
-	  The remaining overlays are reserved for video.
-
 source "drivers/gpu/drm/omapdrm/dss/Kconfig"
 source "drivers/gpu/drm/omapdrm/displays/Kconfig"
 

drivers/gpu/drm/omapdrm/displays/panel-dpi.c

@@ -16,6 +16,7 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/regulator/consumer.h>
+#include <linux/backlight.h>
 
 #include <video/omap-panel-data.h>
 #include <video/of_display_timing.h>
@@ -30,6 +31,8 @@ struct panel_drv_data {
 
 	struct videomode vm;
 
+	struct backlight_device *backlight;
+
 	/* used for non-DT boot, to be removed */
 	int backlight_gpio;
 
@@ -97,6 +100,11 @@ static int panel_dpi_enable(struct omap_dss_device *dssdev)
 	if (gpio_is_valid(ddata->backlight_gpio))
 		gpio_set_value_cansleep(ddata->backlight_gpio, 1);
 
+	if (ddata->backlight) {
+		ddata->backlight->props.power = FB_BLANK_UNBLANK;
+		backlight_update_status(ddata->backlight);
+	}
+
 	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 
 	return 0;
@@ -113,6 +121,11 @@ static void panel_dpi_disable(struct omap_dss_device *dssdev)
 	if (gpio_is_valid(ddata->backlight_gpio))
 		gpio_set_value_cansleep(ddata->backlight_gpio, 0);
 
+	if (ddata->backlight) {
+		ddata->backlight->props.power = FB_BLANK_POWERDOWN;
+		backlight_update_status(ddata->backlight);
+	}
+
 	gpiod_set_value_cansleep(ddata->enable_gpio, 0);
 	regulator_disable(ddata->vcc_supply);
 
@@ -209,6 +222,7 @@ static int panel_dpi_probe_of(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct device_node *node = pdev->dev.of_node;
+	struct device_node *bl_node;
 	struct omap_dss_device *in;
 	int r;
 	struct display_timing timing;
@@ -236,10 +250,19 @@ static int panel_dpi_probe_of(struct platform_device *pdev)
 
 	ddata->backlight_gpio = -ENOENT;
 
+	bl_node = of_parse_phandle(node, "backlight", 0);
+	if (bl_node) {
+		ddata->backlight = of_find_backlight_by_node(bl_node);
+		of_node_put(bl_node);
+
+		if (!ddata->backlight)
+			return -EPROBE_DEFER;
+	}
+
 	r = of_get_display_timing(node, "panel-timing", &timing);
 	if (r) {
 		dev_err(&pdev->dev, "failed to get video timing\n");
-		return r;
+		goto error_free_backlight;
 	}
 
 	videomode_from_timing(&timing, &ddata->vm);
@@ -247,12 +270,19 @@ static int panel_dpi_probe_of(struct platform_device *pdev)
 	in = omapdss_of_find_source_for_first_ep(node);
 	if (IS_ERR(in)) {
 		dev_err(&pdev->dev, "failed to find video source\n");
-		return PTR_ERR(in);
+		r = PTR_ERR(in);
+		goto error_free_backlight;
 	}
 
 	ddata->in = in;
 
 	return 0;
+
+error_free_backlight:
+	if (ddata->backlight)
+		put_device(&ddata->backlight->dev);
+
+	return r;
 }
 
 static int panel_dpi_probe(struct platform_device *pdev)
@@ -321,6 +351,9 @@ static int __exit panel_dpi_remove(struct platform_device *pdev)
 
 	omap_dss_put_device(in);
 
+	if (ddata->backlight)
+		put_device(&ddata->backlight->dev);
+
 	return 0;
 }
 

drivers/gpu/drm/omapdrm/dss/Kconfig

 config OMAP2_DSS_INIT
 	bool
 
+config OMAP_DSS_BASE
+	tristate
+
 menuconfig OMAP2_DSS
         tristate "OMAP2+ Display Subsystem support"
+	select OMAP_DSS_BASE
 	select VIDEOMODE_HELPERS
 	select OMAP2_DSS_INIT
 	select HDMI

drivers/gpu/drm/omapdrm/dss/Makefile

 obj-$(CONFIG_OMAP2_DSS_INIT) += omapdss-boot-init.o
+
+obj-$(CONFIG_OMAP_DSS_BASE) += omapdss-base.o
+omapdss-base-y := base.o display.o dss-of.o output.o
+
 obj-$(CONFIG_OMAP2_DSS) += omapdss.o
 # Core DSS files
-omapdss-y := core.o dss.o dss_features.o dispc.o dispc_coefs.o display.o \
-	output.o dss-of.o pll.o video-pll.o
+omapdss-y := core.o dss.o dss_features.o dispc.o dispc_coefs.o \
+	pll.o video-pll.o
 omapdss-$(CONFIG_OMAP2_DSS_DPI) += dpi.o
 omapdss-$(CONFIG_OMAP2_DSS_RFBI) += rfbi.o
 omapdss-$(CONFIG_OMAP2_DSS_VENC) += venc.o

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

+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/list.h>
+#include "omapdss.h"
+
+static bool dss_initialized;
+static const struct dispc_ops *ops;
+
+static struct list_head omapdss_comp_list;
+
+struct omapdss_comp_node {
+	struct list_head list;
+	struct device_node *node;
+	bool dss_core_component;
+};
+
+void omapdss_set_is_initialized(bool set)
+{
+	dss_initialized = set;
+}
+EXPORT_SYMBOL(omapdss_set_is_initialized);
+
+bool omapdss_is_initialized(void)
+{
+	return dss_initialized;
+}
+EXPORT_SYMBOL(omapdss_is_initialized);
+
+void dispc_set_ops(const struct dispc_ops *o)
+{
+	ops = o;
+}
+EXPORT_SYMBOL(dispc_set_ops);
+
+const struct dispc_ops *dispc_get_ops(void)
+{
+	return ops;
+}
+EXPORT_SYMBOL(dispc_get_ops);
+
+static bool omapdss_list_contains(const struct device_node *node)
+{
+	struct omapdss_comp_node *comp;
+
+	list_for_each_entry(comp, &omapdss_comp_list, list) {
+		if (comp->node == node)
+			return true;
+	}
+
+	return false;
+}
+
+static void omapdss_walk_device(struct device *dev, struct device_node *node,
+				bool dss_core)
+{
+	struct device_node *n;
+	struct omapdss_comp_node *comp = devm_kzalloc(dev, sizeof(*comp),
+						      GFP_KERNEL);
+
+	if (comp) {
+		comp->node = node;
+		comp->dss_core_component = dss_core;
+		list_add(&comp->list, &omapdss_comp_list);
+	}
+
+	/*
+	 * of_graph_get_remote_port_parent() prints an error if there is no
+	 * port/ports node. To avoid that, check first that there's the node.
+	 */
+	n = of_get_child_by_name(node, "ports");
+	if (!n)
+		n = of_get_child_by_name(node, "port");
+	if (!n)
+		return;
+
+	of_node_put(n);
+
+	n = NULL;
+	while ((n = of_graph_get_next_endpoint(node, n)) != NULL) {
+		struct device_node *pn = of_graph_get_remote_port_parent(n);
+
+		if (!pn)
+			continue;
+
+		if (!of_device_is_available(pn) || omapdss_list_contains(pn)) {
+			of_node_put(pn);
+			continue;
+		}
+
+		omapdss_walk_device(dev, pn, false);
+	}
+}
+
+void omapdss_gather_components(struct device *dev)
+{
+	struct device_node *child;
+
+	INIT_LIST_HEAD(&omapdss_comp_list);
+
+	omapdss_walk_device(dev, dev->of_node, true);
+
+	for_each_available_child_of_node(dev->of_node, child) {
+		if (!of_find_property(child, "compatible", NULL))
+			continue;
+
+		omapdss_walk_device(dev, child, true);
+	}
+}
+EXPORT_SYMBOL(omapdss_gather_components);
+
+static bool omapdss_component_is_loaded(struct omapdss_comp_node *comp)
+{
+	if (comp->dss_core_component)
+		return true;
+	if (omapdss_component_is_display(comp->node))
+		return true;
+	if (omapdss_component_is_output(comp->node))
+		return true;
+
+	return false;
+}
+
+bool omapdss_stack_is_ready(void)
+{
+	struct omapdss_comp_node *comp;
+
+	list_for_each_entry(comp, &omapdss_comp_list, list) {
+		if (!omapdss_component_is_loaded(comp))
+			return false;
+	}
+
+	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/dispc.h

@@ -353,7 +353,7 @@ static inline u16 DISPC_CPR_COEF_B(enum omap_channel channel)
 }
 
 /* DISPC overlay register base addresses */
-static inline u16 DISPC_OVL_BASE(enum omap_plane plane)
+static inline u16 DISPC_OVL_BASE(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -373,7 +373,7 @@ static inline u16 DISPC_OVL_BASE(enum omap_plane plane)
 }
 
 /* DISPC overlay register offsets */
-static inline u16 DISPC_BA0_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_BA0_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -389,7 +389,7 @@ static inline u16 DISPC_BA0_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_BA1_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_BA1_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -405,7 +405,7 @@ static inline u16 DISPC_BA1_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_BA0_UV_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_BA0_UV_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -425,7 +425,7 @@ static inline u16 DISPC_BA0_UV_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_BA1_UV_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_BA1_UV_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -445,7 +445,7 @@ static inline u16 DISPC_BA1_UV_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_POS_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_POS_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -460,7 +460,7 @@ static inline u16 DISPC_POS_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_SIZE_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_SIZE_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -476,7 +476,7 @@ static inline u16 DISPC_SIZE_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_ATTR_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_ATTR_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -493,7 +493,7 @@ static inline u16 DISPC_ATTR_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_ATTR2_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_ATTR2_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -513,7 +513,7 @@ static inline u16 DISPC_ATTR2_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_FIFO_THRESH_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_FIFO_THRESH_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -530,7 +530,7 @@ static inline u16 DISPC_FIFO_THRESH_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_FIFO_SIZE_STATUS_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_FIFO_SIZE_STATUS_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -547,7 +547,7 @@ static inline u16 DISPC_FIFO_SIZE_STATUS_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_ROW_INC_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_ROW_INC_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -564,7 +564,7 @@ static inline u16 DISPC_ROW_INC_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_PIX_INC_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_PIX_INC_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -581,7 +581,7 @@ static inline u16 DISPC_PIX_INC_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_WINDOW_SKIP_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_WINDOW_SKIP_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -597,7 +597,7 @@ static inline u16 DISPC_WINDOW_SKIP_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_TABLE_BA_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_TABLE_BA_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -613,7 +613,7 @@ static inline u16 DISPC_TABLE_BA_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_FIR_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_FIR_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -631,7 +631,7 @@ static inline u16 DISPC_FIR_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_FIR2_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_FIR2_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -651,7 +651,7 @@ static inline u16 DISPC_FIR2_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_PIC_SIZE_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_PIC_SIZE_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -670,7 +670,7 @@ static inline u16 DISPC_PIC_SIZE_OFFSET(enum omap_plane plane)
 }
 
 
-static inline u16 DISPC_ACCU0_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_ACCU0_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -688,7 +688,7 @@ static inline u16 DISPC_ACCU0_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_ACCU2_0_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_ACCU2_0_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -708,7 +708,7 @@ static inline u16 DISPC_ACCU2_0_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_ACCU1_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_ACCU1_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -726,7 +726,7 @@ static inline u16 DISPC_ACCU1_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_ACCU2_1_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_ACCU2_1_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -747,7 +747,7 @@ static inline u16 DISPC_ACCU2_1_OFFSET(enum omap_plane plane)
 }
 
 /* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
-static inline u16 DISPC_FIR_COEF_H_OFFSET(enum omap_plane plane, u16 i)
+static inline u16 DISPC_FIR_COEF_H_OFFSET(enum omap_plane_id plane, u16 i)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -766,7 +766,7 @@ static inline u16 DISPC_FIR_COEF_H_OFFSET(enum omap_plane plane, u16 i)
 }
 
 /* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
-static inline u16 DISPC_FIR_COEF_H2_OFFSET(enum omap_plane plane, u16 i)
+static inline u16 DISPC_FIR_COEF_H2_OFFSET(enum omap_plane_id plane, u16 i)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -787,7 +787,7 @@ static inline u16 DISPC_FIR_COEF_H2_OFFSET(enum omap_plane plane, u16 i)
 }
 
 /* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
-static inline u16 DISPC_FIR_COEF_HV_OFFSET(enum omap_plane plane, u16 i)
+static inline u16 DISPC_FIR_COEF_HV_OFFSET(enum omap_plane_id plane, u16 i)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -806,7 +806,7 @@ static inline u16 DISPC_FIR_COEF_HV_OFFSET(enum omap_plane plane, u16 i)
 }
 
 /* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
-static inline u16 DISPC_FIR_COEF_HV2_OFFSET(enum omap_plane plane, u16 i)
+static inline u16 DISPC_FIR_COEF_HV2_OFFSET(enum omap_plane_id plane, u16 i)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -827,7 +827,7 @@ static inline u16 DISPC_FIR_COEF_HV2_OFFSET(enum omap_plane plane, u16 i)
 }
 
 /* coef index i = {0, 1, 2, 3, 4,} */
-static inline u16 DISPC_CONV_COEF_OFFSET(enum omap_plane plane, u16 i)
+static inline u16 DISPC_CONV_COEF_OFFSET(enum omap_plane_id plane, u16 i)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -845,7 +845,7 @@ static inline u16 DISPC_CONV_COEF_OFFSET(enum omap_plane plane, u16 i)
 }
 
 /* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
-static inline u16 DISPC_FIR_COEF_V_OFFSET(enum omap_plane plane, u16 i)
+static inline u16 DISPC_FIR_COEF_V_OFFSET(enum omap_plane_id plane, u16 i)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -865,7 +865,7 @@ static inline u16 DISPC_FIR_COEF_V_OFFSET(enum omap_plane plane, u16 i)
 }
 
 /* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */
-static inline u16 DISPC_FIR_COEF_V2_OFFSET(enum omap_plane plane, u16 i)
+static inline u16 DISPC_FIR_COEF_V2_OFFSET(enum omap_plane_id plane, u16 i)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -885,7 +885,7 @@ static inline u16 DISPC_FIR_COEF_V2_OFFSET(enum omap_plane plane, u16 i)
 	}
 }
 
-static inline u16 DISPC_PRELOAD_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_PRELOAD_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:
@@ -902,7 +902,7 @@ static inline u16 DISPC_PRELOAD_OFFSET(enum omap_plane plane)
 	}
 }
 
-static inline u16 DISPC_MFLAG_THRESHOLD_OFFSET(enum omap_plane plane)
+static inline u16 DISPC_MFLAG_THRESHOLD_OFFSET(enum omap_plane_id plane)
 {
 	switch (plane) {
 	case OMAP_DSS_GFX:

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

@@ -29,8 +29,6 @@
 #include <linux/of.h>
 
 #include "omapdss.h"
-#include "dss.h"
-#include "dss_features.h"
 
 void omapdss_default_get_resolution(struct omap_dss_device *dssdev,
 			u16 *xres, u16 *yres)
@@ -55,10 +53,10 @@ int omapdss_default_get_recommended_bpp(struct omap_dss_device *dssdev)
 		else
 			return 16;
 	case OMAP_DISPLAY_TYPE_DSI:
-		if (dsi_get_pixel_size(dssdev->panel.dsi_pix_fmt) > 16)
-			return 24;
-		else
+		if (dssdev->panel.dsi_pix_fmt == OMAP_DSS_DSI_FMT_RGB565)
 			return 16;
+		else
+			return 24;
 	case OMAP_DISPLAY_TYPE_VENC:
 	case OMAP_DISPLAY_TYPE_SDI:
 	case OMAP_DISPLAY_TYPE_HDMI:
@@ -85,6 +83,7 @@ static int disp_num_counter;
 int omapdss_register_display(struct omap_dss_device *dssdev)
 {
 	struct omap_dss_driver *drv = dssdev->driver;
+	struct list_head *cur;
 	int id;
 
 	/*
@@ -120,7 +119,14 @@ int omapdss_register_display(struct omap_dss_device *dssdev)
 		drv->get_timings = omapdss_default_get_timings;
 
 	mutex_lock(&panel_list_mutex);
-	list_add_tail(&dssdev->panel_list, &panel_list);
+	list_for_each(cur, &panel_list) {
+		struct omap_dss_device *ldev = list_entry(cur,
+							 struct omap_dss_device,
+							 panel_list);
+		if (strcmp(ldev->alias, dssdev->alias) > 0)
+			break;
+	}
+	list_add_tail(&dssdev->panel_list, cur);
 	mutex_unlock(&panel_list_mutex);
 	return 0;
 }
@@ -134,6 +140,24 @@ void omapdss_unregister_display(struct omap_dss_device *dssdev)
 }
 EXPORT_SYMBOL(omapdss_unregister_display);
 
+bool omapdss_component_is_display(struct device_node *node)
+{
+	struct omap_dss_device *dssdev;
+	bool found = false;
+
+	mutex_lock(&panel_list_mutex);
+	list_for_each_entry(dssdev, &panel_list, panel_list) {
+		if (dssdev->dev->of_node == node) {
+			found = true;
+			goto out;
+		}
+	}
+out:
+	mutex_unlock(&panel_list_mutex);
+	return found;
+}
+EXPORT_SYMBOL(omapdss_component_is_display);
+
 struct omap_dss_device *omap_dss_get_device(struct omap_dss_device *dssdev)
 {
 	if (!try_module_get(dssdev->owner))

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

@@ -67,6 +67,45 @@ static struct dpi_data *dpi_get_data_from_pdev(struct platform_device *pdev)
 	return dev_get_drvdata(&pdev->dev);
 }
 
+static enum dss_clk_source dpi_get_clk_src_dra7xx(enum omap_channel channel)
+{
+	/*
+	 * Possible clock sources:
+	 * LCD1: FCK/PLL1_1/HDMI_PLL
+	 * LCD2: FCK/PLL1_3/HDMI_PLL (DRA74x: PLL2_3)
+	 * LCD3: FCK/PLL1_3/HDMI_PLL (DRA74x: PLL2_1)
+	 */
+
+	switch (channel) {
+	case OMAP_DSS_CHANNEL_LCD:
+	{
+		if (dss_pll_find_by_src(DSS_CLK_SRC_PLL1_1))
+			return DSS_CLK_SRC_PLL1_1;
+		break;
+	}
+	case OMAP_DSS_CHANNEL_LCD2:
+	{
+		if (dss_pll_find_by_src(DSS_CLK_SRC_PLL1_3))
+			return DSS_CLK_SRC_PLL1_3;
+		if (dss_pll_find_by_src(DSS_CLK_SRC_PLL2_3))
+			return DSS_CLK_SRC_PLL2_3;
+		break;
+	}
+	case OMAP_DSS_CHANNEL_LCD3:
+	{
+		if (dss_pll_find_by_src(DSS_CLK_SRC_PLL2_1))
+			return DSS_CLK_SRC_PLL2_1;
+		if (dss_pll_find_by_src(DSS_CLK_SRC_PLL1_3))
+			return DSS_CLK_SRC_PLL1_3;
+		break;
+	}
+	default:
+		break;
+	}
+
+	return DSS_CLK_SRC_FCK;
+}
+
 static enum dss_clk_source dpi_get_clk_src(enum omap_channel channel)
 {
 	/*
@@ -107,16 +146,7 @@ static enum dss_clk_source dpi_get_clk_src(enum omap_channel channel)
 		}
 
 	case OMAPDSS_VER_DRA7xx:
-		switch (channel) {
-		case OMAP_DSS_CHANNEL_LCD:
-			return DSS_CLK_SRC_PLL1_1;
-		case OMAP_DSS_CHANNEL_LCD2:
-			return DSS_CLK_SRC_PLL1_3;
-		case OMAP_DSS_CHANNEL_LCD3:
-			return DSS_CLK_SRC_PLL2_1;
-		default:
-			return DSS_CLK_SRC_FCK;
-		}
+		return dpi_get_clk_src_dra7xx(channel);
 
 	default:
 		return DSS_CLK_SRC_FCK;
@@ -170,14 +200,6 @@ static bool dpi_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
 {
 	struct dpi_clk_calc_ctx *ctx = data;
 
-	/*
-	 * Odd dividers give us uneven duty cycle, causing problem when level
-	 * shifted. So skip all odd dividers when the pixel clock is on the
-	 * higher side.
-	 */
-	if (m_dispc > 1 && m_dispc % 2 != 0 && ctx->pck_min >= 100000000)
-		return false;
-
 	ctx->pll_cinfo.mX[ctx->clkout_idx] = m_dispc;
 	ctx->pll_cinfo.clkout[ctx->clkout_idx] = dispc;
 

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

@@ -527,7 +527,7 @@ static inline int wait_for_bit_change(struct platform_device *dsidev,
 	return !value;
 }
 
-u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
+static u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
 {
 	switch (fmt) {
 	case OMAP_DSS_DSI_FMT_RGB888:

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

@@ -19,7 +19,6 @@
 #include <linux/seq_file.h>
 
 #include "omapdss.h"
-#include "dss.h"
 
 struct device_node *
 omapdss_of_get_next_port(const struct device_node *parent,
@@ -110,6 +109,7 @@ struct device_node *dss_of_port_get_parent_device(struct device_node *port)
 
 	return NULL;
 }
+EXPORT_SYMBOL_GPL(dss_of_port_get_parent_device);
 
 u32 dss_of_port_get_port_number(struct device_node *port)
 {
@@ -122,6 +122,7 @@ u32 dss_of_port_get_port_number(struct device_node *port)
 
 	return reg;
 }
+EXPORT_SYMBOL_GPL(dss_of_port_get_port_number);
 
 static struct device_node *omapdss_of_get_remote_port(const struct device_node *node)
 {

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

@@ -117,14 +117,6 @@ static const char * const dss_generic_clk_source_names[] = {
 	[DSS_CLK_SRC_HDMI_PLL]	= "HDMI PLL",
 };
 
-static bool dss_initialized;
-
-bool omapdss_is_initialized(void)
-{
-	return dss_initialized;
-}
-EXPORT_SYMBOL(omapdss_is_initialized);
-
 static inline void dss_write_reg(const struct dss_reg idx, u32 val)
 {
 	__raw_writel(val, dss.base + idx.idx);
@@ -1266,7 +1258,8 @@ static int dss_bind(struct device *dev)
 
 	pm_set_vt_switch(0);
 
-	dss_initialized = true;
+	omapdss_gather_components(dev);
+	omapdss_set_is_initialized(true);
 
 	return 0;
 
@@ -1290,7 +1283,7 @@ static void dss_unbind(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 
-	dss_initialized = false;
+	omapdss_set_is_initialized(false);
 
 	component_unbind_all(&pdev->dev, NULL);
 

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

@@ -253,10 +253,6 @@ struct dss_pll *dss_video_pll_init(struct platform_device *pdev, int id,
 	struct regulator *regulator);
 void dss_video_pll_uninit(struct dss_pll *pll);
 
-/* dss-of */
-struct device_node *dss_of_port_get_parent_device(struct device_node *port);
-u32 dss_of_port_get_port_number(struct device_node *port);
-
 #if defined(CONFIG_OMAP2_DSS_DEBUGFS)
 void dss_debug_dump_clocks(struct seq_file *s);
 #endif
@@ -315,15 +311,7 @@ void dsi_uninit_platform_driver(void);
 void dsi_dump_clocks(struct seq_file *s);
 
 void dsi_irq_handler(void);
-u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt);
 
-#else
-static inline u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
-{
-	WARN(1, "%s: DSI not compiled in, returning pixel_size as 0\n",
-	     __func__);
-	return 0;
-}
 #endif
 
 /* DPI */
@@ -349,6 +337,9 @@ int dispc_init_platform_driver(void) __init;
 void dispc_uninit_platform_driver(void);
 void dispc_dump_clocks(struct seq_file *s);
 
+int dispc_runtime_get(void);
+void dispc_runtime_put(void);
+
 void dispc_enable_sidle(void);
 void dispc_disable_sidle(void);
 
@@ -368,8 +359,9 @@ int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
 		struct dispc_clock_info *cinfo);
 
 
-void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high);
-void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,
+void dispc_ovl_set_fifo_threshold(enum omap_plane_id plane, u32 low,
+				  u32 high);
+void dispc_ovl_compute_fifo_thresholds(enum omap_plane_id plane,
 		u32 *fifo_low, u32 *fifo_high, bool use_fifomerge,
 		bool manual_update);
 
@@ -382,8 +374,6 @@ void dispc_set_tv_pclk(unsigned long pclk);
 u32 dispc_wb_get_framedone_irq(void);
 bool dispc_wb_go_busy(void);
 void dispc_wb_go(void);
-void dispc_wb_enable(bool enable);
-bool dispc_wb_is_enabled(void);
 void dispc_wb_set_channel_in(enum dss_writeback_channel channel);
 int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
 		bool mem_to_mem, const struct videomode *vm);

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

@@ -774,13 +774,11 @@ int dss_feat_get_num_mgrs(void)
 {
 	return omap_current_dss_features->num_mgrs;
 }
-EXPORT_SYMBOL(dss_feat_get_num_mgrs);
 
 int dss_feat_get_num_ovls(void)
 {
 	return omap_current_dss_features->num_ovls;
 }
-EXPORT_SYMBOL(dss_feat_get_num_ovls);
 
 unsigned long dss_feat_get_param_min(enum dss_range_param param)
 {
@@ -802,18 +800,17 @@ enum omap_dss_output_id dss_feat_get_supported_outputs(enum omap_channel channel
 	return omap_current_dss_features->supported_outputs[channel];
 }
 
-enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane plane)
+enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane_id plane)
 {
 	return omap_current_dss_features->supported_color_modes[plane];
 }
-EXPORT_SYMBOL(dss_feat_get_supported_color_modes);
 
-enum omap_overlay_caps dss_feat_get_overlay_caps(enum omap_plane plane)
+enum omap_overlay_caps dss_feat_get_overlay_caps(enum omap_plane_id plane)
 {
 	return omap_current_dss_features->overlay_caps[plane];
 }
 
-bool dss_feat_color_mode_supported(enum omap_plane plane,
+bool dss_feat_color_mode_supported(enum omap_plane_id plane,
 		enum omap_color_mode color_mode)
 {
 	return omap_current_dss_features->supported_color_modes[plane] &

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

@@ -88,8 +88,8 @@ enum dss_range_param {
 /* DSS Feature Functions */
 unsigned long dss_feat_get_param_min(enum dss_range_param param);
 unsigned long dss_feat_get_param_max(enum dss_range_param param);
-enum omap_overlay_caps dss_feat_get_overlay_caps(enum omap_plane plane);
-bool dss_feat_color_mode_supported(enum omap_plane plane,
+enum omap_overlay_caps dss_feat_get_overlay_caps(enum omap_plane_id plane);
+bool dss_feat_color_mode_supported(enum omap_plane_id plane,
 		enum omap_color_mode color_mode);
 
 u32 dss_feat_get_buffer_size_unit(void);	/* in bytes */
@@ -104,4 +104,8 @@ void dss_features_init(enum omapdss_version version);
 enum omap_display_type dss_feat_get_supported_displays(enum omap_channel channel);
 enum omap_dss_output_id dss_feat_get_supported_outputs(enum omap_channel channel);
 
+int dss_feat_get_num_mgrs(void);
+int dss_feat_get_num_ovls(void);
+enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane_id plane);
+
 #endif

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

@@ -147,15 +147,17 @@ void hdmi_wp_video_config_interface(struct hdmi_wp_data *wp,
 				    struct videomode *vm)
 {
 	u32 r;
-	bool vsync_pol, hsync_pol;
+	bool vsync_inv, hsync_inv;
 	DSSDBG("Enter hdmi_wp_video_config_interface\n");
 
-	vsync_pol = !!(vm->flags & DISPLAY_FLAGS_VSYNC_HIGH);
-	hsync_pol = !!(vm->flags & DISPLAY_FLAGS_HSYNC_HIGH);
+	vsync_inv = !!(vm->flags & DISPLAY_FLAGS_VSYNC_LOW);
+	hsync_inv = !!(vm->flags & DISPLAY_FLAGS_HSYNC_LOW);
 
 	r = hdmi_read_reg(wp->base, HDMI_WP_VIDEO_CFG);
-	r = FLD_MOD(r, vsync_pol, 7, 7);
-	r = FLD_MOD(r, hsync_pol, 6, 6);
+	r = FLD_MOD(r, 1, 7, 7);	/* VSYNC_POL to dispc active high */
+	r = FLD_MOD(r, 1, 6, 6);	/* HSYNC_POL to dispc active high */
+	r = FLD_MOD(r, vsync_inv, 5, 5);	/* CORE_VSYNC_INV */
+	r = FLD_MOD(r, hsync_inv, 4, 4);	/* CORE_HSYNC_INV */
 	r = FLD_MOD(r, !!(vm->flags & DISPLAY_FLAGS_INTERLACED), 3, 3);
 	r = FLD_MOD(r, 1, 1, 0); /* HDMI_TIMING_MASTER_24BIT */
 	hdmi_write_reg(wp->base, HDMI_WP_VIDEO_CFG, r);

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

@@ -76,7 +76,7 @@ enum omap_display_type {
 	OMAP_DISPLAY_TYPE_DVI		= 1 << 6,
 };
 
-enum omap_plane {
+enum omap_plane_id {
 	OMAP_DSS_GFX	= 0,
 	OMAP_DSS_VIDEO1	= 1,
 	OMAP_DSS_VIDEO2	= 2,
@@ -338,7 +338,7 @@ struct omap_overlay {
 
 	/* static fields */
 	const char *name;
-	enum omap_plane id;
+	enum omap_plane_id id;
 	enum omap_color_mode supported_modes;
 	enum omap_overlay_caps caps;
 
@@ -785,7 +785,7 @@ const char *omapdss_get_default_display_name(void);
 
 int dss_feat_get_num_mgrs(void);
 int dss_feat_get_num_ovls(void);
-enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane plane);
+enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane_id plane);
 
 
 
@@ -844,42 +844,10 @@ omapdss_of_get_first_endpoint(const struct device_node *parent);
 struct omap_dss_device *
 omapdss_of_find_source_for_first_ep(struct device_node *node);
 
-u32 dispc_read_irqstatus(void);
-void dispc_clear_irqstatus(u32 mask);
-u32 dispc_read_irqenable(void);
-void dispc_write_irqenable(u32 mask);
+void omapdss_set_is_initialized(bool set);
 
-int dispc_request_irq(irq_handler_t handler, void *dev_id);
-void dispc_free_irq(void *dev_id);
-
-int dispc_runtime_get(void);
-void dispc_runtime_put(void);
-
-void dispc_mgr_enable(enum omap_channel channel, bool enable);
-u32 dispc_mgr_get_vsync_irq(enum omap_channel channel);
-u32 dispc_mgr_get_framedone_irq(enum omap_channel channel);
-u32 dispc_mgr_get_sync_lost_irq(enum omap_channel channel);
-bool dispc_mgr_go_busy(enum omap_channel channel);
-void dispc_mgr_go(enum omap_channel channel);
-void dispc_mgr_set_lcd_config(enum omap_channel channel,
-		const struct dss_lcd_mgr_config *config);
-void dispc_mgr_set_timings(enum omap_channel channel,
-		const struct videomode *vm);
-void dispc_mgr_setup(enum omap_channel channel,
-		const struct omap_overlay_manager_info *info);
-u32 dispc_mgr_gamma_size(enum omap_channel channel);
-void dispc_mgr_set_gamma(enum omap_channel channel,
-			 const struct drm_color_lut *lut,
-			 unsigned int length);
-
-int dispc_ovl_enable(enum omap_plane plane, bool enable);
-bool dispc_ovl_enabled(enum omap_plane plane);
-void dispc_ovl_set_channel_out(enum omap_plane plane,
-		enum omap_channel channel);
-int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi,
-		bool replication, const struct videomode *vm, bool mem_to_mem);
-
-enum omap_dss_output_id dispc_mgr_get_supported_outputs(enum omap_channel channel);
+struct device_node *dss_of_port_get_parent_device(struct device_node *port);
+u32 dss_of_port_get_port_number(struct device_node *port);
 
 struct dss_mgr_ops {
 	int (*connect)(enum omap_channel channel,
@@ -919,4 +887,60 @@ int dss_mgr_register_framedone_handler(enum omap_channel channel,
 void dss_mgr_unregister_framedone_handler(enum omap_channel channel,
 		void (*handler)(void *), void *data);
 
+/* dispc ops */
+
+struct dispc_ops {
+	u32 (*read_irqstatus)(void);
+	void (*clear_irqstatus)(u32 mask);
+	u32 (*read_irqenable)(void);
+	void (*write_irqenable)(u32 mask);
+
+	int (*request_irq)(irq_handler_t handler, void *dev_id);
+	void (*free_irq)(void *dev_id);
+
+	int (*runtime_get)(void);
+	void (*runtime_put)(void);
+
+	int (*get_num_ovls)(void);
+	int (*get_num_mgrs)(void);
+
+	void (*mgr_enable)(enum omap_channel channel, bool enable);
+	bool (*mgr_is_enabled)(enum omap_channel channel);
+	u32 (*mgr_get_vsync_irq)(enum omap_channel channel);
+	u32 (*mgr_get_framedone_irq)(enum omap_channel channel);
+	u32 (*mgr_get_sync_lost_irq)(enum omap_channel channel);
+	bool (*mgr_go_busy)(enum omap_channel channel);
+	void (*mgr_go)(enum omap_channel channel);
+	void (*mgr_set_lcd_config)(enum omap_channel channel,
+			const struct dss_lcd_mgr_config *config);
+	void (*mgr_set_timings)(enum omap_channel channel,
+			const struct videomode *vm);
+	void (*mgr_setup)(enum omap_channel channel,
+			const struct omap_overlay_manager_info *info);
+	enum omap_dss_output_id (*mgr_get_supported_outputs)(enum omap_channel channel);
+	u32 (*mgr_gamma_size)(enum omap_channel channel);
+	void (*mgr_set_gamma)(enum omap_channel channel,
+		const struct drm_color_lut *lut,
+		unsigned int length);
+
+	int (*ovl_enable)(enum omap_plane_id plane, bool enable);
+	bool (*ovl_enabled)(enum omap_plane_id plane);
+	void (*ovl_set_channel_out)(enum omap_plane_id plane,
+			enum omap_channel channel);
+	int (*ovl_setup)(enum omap_plane_id plane,
+			 const struct omap_overlay_info *oi,
+			const struct videomode *vm, bool mem_to_mem);
+
+	enum omap_color_mode (*ovl_get_color_modes)(enum omap_plane_id plane);
+};
+
+void dispc_set_ops(const struct dispc_ops *o);
+const struct dispc_ops *dispc_get_ops(void);
+
+bool omapdss_component_is_display(struct device_node *node);
+bool omapdss_component_is_output(struct device_node *node);
+
+bool omapdss_stack_is_ready(void);
+void omapdss_gather_components(struct device *dev);
+
 #endif /* __OMAP_DRM_DSS_H */

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

@@ -22,7 +22,6 @@
 #include <linux/of.h>
 
 #include "omapdss.h"
-#include "dss.h"
 
 static LIST_HEAD(output_list);
 static DEFINE_MUTEX(output_lock);
@@ -35,14 +34,15 @@ int omapdss_output_set_device(struct omap_dss_device *out,
 	mutex_lock(&output_lock);
 
 	if (out->dst) {
-		DSSERR("output already has device %s connected to it\n",
+		dev_err(out->dev,
+			"output already has device %s connected to it\n",
 			out->dst->name);
 		r = -EINVAL;
 		goto err;
 	}
 
 	if (out->output_type != dssdev->type) {
-		DSSERR("output type and display type don't match\n");
+		dev_err(out->dev, "output type and display type don't match\n");
 		r = -EINVAL;
 		goto err;
 	}
@@ -67,14 +67,16 @@ int omapdss_output_unset_device(struct omap_dss_device *out)
 	mutex_lock(&output_lock);
 
 	if (!out->dst) {
-		DSSERR("output doesn't have a device connected to it\n");
+		dev_err(out->dev,
+			"output doesn't have a device connected to it\n");
 		r = -EINVAL;
 		goto err;
 	}
 
 	if (out->dst->state != OMAP_DSS_DISPLAY_DISABLED) {
-		DSSERR("device %s is not disabled, cannot unset device\n",
-				out->dst->name);
+		dev_err(out->dev,
+			"device %s is not disabled, cannot unset device\n",
+			out->dst->name);
 		r = -EINVAL;
 		goto err;
 	}
@@ -105,6 +107,19 @@ void omapdss_unregister_output(struct omap_dss_device *out)
 }
 EXPORT_SYMBOL(omapdss_unregister_output);
 
+bool omapdss_component_is_output(struct device_node *node)
+{
+	struct omap_dss_device *out;
+
+	list_for_each_entry(out, &output_list, list) {
+		if (out->dev->of_node == node)
+			return true;
+	}
+
+	return false;
+}
+EXPORT_SYMBOL(omapdss_component_is_output);
+
 struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
 {
 	struct omap_dss_device *out;

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

@@ -215,8 +215,8 @@ bool dss_pll_calc_a(const struct dss_pll *pll, unsigned long clkin,
 		dss_pll_calc_func func, void *data)
 {
 	const struct dss_pll_hw *hw = pll->hw;
-	int n, n_start, n_stop;
-	int m, m_start, m_stop;
+	int n, n_min, n_max;
+	int m, m_min, m_max;
 	unsigned long fint, clkdco;
 	unsigned long pll_hw_max;
 	unsigned long fint_hw_min, fint_hw_max;
@@ -226,21 +226,22 @@ bool dss_pll_calc_a(const struct dss_pll *pll, unsigned long clkin,
 	fint_hw_min = hw->fint_min;
 	fint_hw_max = hw->fint_max;
 
-	n_start = max(DIV_ROUND_UP(clkin, fint_hw_max), 1ul);
-	n_stop = min((unsigned)(clkin / fint_hw_min), hw->n_max);
+	n_min = max(DIV_ROUND_UP(clkin, fint_hw_max), 1ul);
+	n_max = min((unsigned)(clkin / fint_hw_min), hw->n_max);
 
 	pll_max = pll_max ? pll_max : ULONG_MAX;
 
-	for (n = n_start; n <= n_stop; ++n) {
+	/* Try to find high N & M to avoid jitter (DRA7 errata i886) */
+	for (n = n_max; n >= n_min; --n) {
 		fint = clkin / n;
 
-		m_start = max(DIV_ROUND_UP(DIV_ROUND_UP(pll_min, fint), 2),
+		m_min = max(DIV_ROUND_UP(DIV_ROUND_UP(pll_min, fint), 2),
 				1ul);
-		m_stop = min3((unsigned)(pll_max / fint / 2),
+		m_max = min3((unsigned)(pll_max / fint / 2),
 				(unsigned)(pll_hw_max / fint / 2),
 				hw->m_max);
 
-		for (m = m_start; m <= m_stop; ++m) {
+		for (m = m_max; m >= m_min; --m) {
 			clkdco = 2 * m * fint;
 
 			if (func(n, m, fint, clkdco, data))

drivers/gpu/drm/omapdrm/omap_connector.c

@@ -146,8 +146,6 @@ static int omap_connector_mode_valid(struct drm_connector *connector,
 	int r, ret = MODE_BAD;
 
 	drm_display_mode_to_videomode(mode, &vm);
-	vm.flags |= DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE |
-		    DISPLAY_FLAGS_SYNC_NEGEDGE;
 	mode->vrefresh = drm_mode_vrefresh(mode);
 
 	/*
@@ -162,6 +160,12 @@ static int omap_connector_mode_valid(struct drm_connector *connector,
 
 		dssdrv->get_timings(dssdev, &t);
 
+		/*
+		 * Ignore the flags, as we don't get them from
+		 * drm_display_mode_to_videomode.
+		 */
+		t.flags = 0;
+
 		if (memcmp(&vm, &t, sizeof(vm)))
 			r = -EINVAL;
 		else
@@ -229,13 +233,11 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
 				connector_type);
 	drm_connector_helper_add(connector, &omap_connector_helper_funcs);
 
-#if 0 /* enable when dss2 supports hotplug */
-	if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_HPD)
-		connector->polled = 0;
-	else
-#endif
+	if (dssdev->driver->detect)
 		connector->polled = DRM_CONNECTOR_POLL_CONNECT |
-				DRM_CONNECTOR_POLL_DISCONNECT;
+				    DRM_CONNECTOR_POLL_DISCONNECT;
+	else
+		connector->polled = 0;
 
 	connector->interlace_allowed = 1;
 	connector->doublescan_allowed = 0;

drivers/gpu/drm/omapdrm/omap_crtc.c

@@ -107,10 +107,12 @@ static struct omap_dss_device *omap_crtc_output[8];
 static int omap_crtc_dss_connect(enum omap_channel channel,
 		struct omap_dss_device *dst)
 {
+	const struct dispc_ops *dispc_ops = dispc_get_ops();
+
 	if (omap_crtc_output[channel])
 		return -EINVAL;
 
-	if ((dispc_mgr_get_supported_outputs(channel) & dst->id) == 0)
+	if ((dispc_ops->mgr_get_supported_outputs(channel) & dst->id) == 0)
 		return -EINVAL;
 
 	omap_crtc_output[channel] = dst;
@@ -134,6 +136,7 @@ static void omap_crtc_dss_start_update(enum omap_channel channel)
 static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable)
 {
 	struct drm_device *dev = crtc->dev;
+	struct omap_drm_private *priv = dev->dev_private;
 	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 	enum omap_channel channel = omap_crtc->channel;
 	struct omap_irq_wait *wait;
@@ -144,7 +147,7 @@ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable)
 		return;
 
 	if (omap_crtc_output[channel]->output_type == OMAP_DISPLAY_TYPE_HDMI) {
-		dispc_mgr_enable(channel, enable);
+		priv->dispc_ops->mgr_enable(channel, enable);
 		omap_crtc->enabled = enable;
 		return;
 	}
@@ -157,8 +160,8 @@ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable)
 		omap_crtc->ignore_digit_sync_lost = true;
 	}
 
-	framedone_irq = dispc_mgr_get_framedone_irq(channel);
-	vsync_irq = dispc_mgr_get_vsync_irq(channel);
+	framedone_irq = priv->dispc_ops->mgr_get_framedone_irq(channel);
+	vsync_irq = priv->dispc_ops->mgr_get_vsync_irq(channel);
 
 	if (enable) {
 		wait = omap_irq_wait_init(dev, vsync_irq, 1);
@@ -178,7 +181,7 @@ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable)
 			wait = omap_irq_wait_init(dev, vsync_irq, 2);
 	}
 
-	dispc_mgr_enable(channel, enable);
+	priv->dispc_ops->mgr_enable(channel, enable);
 	omap_crtc->enabled = enable;
 
 	ret = omap_irq_wait(dev, wait, msecs_to_jiffies(100));
@@ -198,17 +201,9 @@ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable)
 static int omap_crtc_dss_enable(enum omap_channel channel)
 {
 	struct omap_crtc *omap_crtc = omap_crtcs[channel];
-	struct omap_overlay_manager_info info;
+	struct omap_drm_private *priv = omap_crtc->base.dev->dev_private;
 
-	memset(&info, 0, sizeof(info));
-	info.default_color = 0x00000000;
-	info.trans_key = 0x00000000;
-	info.trans_key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
-	info.trans_enabled = false;
-
-	dispc_mgr_setup(omap_crtc->channel, &info);
-	dispc_mgr_set_timings(omap_crtc->channel,
-			&omap_crtc->vm);
+	priv->dispc_ops->mgr_set_timings(omap_crtc->channel, &omap_crtc->vm);
 	omap_crtc_set_enabled(&omap_crtc->base, true);
 
 	return 0;
@@ -233,8 +228,10 @@ static void omap_crtc_dss_set_lcd_config(enum omap_channel channel,
 		const struct dss_lcd_mgr_config *config)
 {
 	struct omap_crtc *omap_crtc = omap_crtcs[channel];
+	struct omap_drm_private *priv = omap_crtc->base.dev->dev_private;
+
 	DBG("%s", omap_crtc->name);
-	dispc_mgr_set_lcd_config(omap_crtc->channel, config);
+	priv->dispc_ops->mgr_set_lcd_config(omap_crtc->channel, config);
 }
 
 static int omap_crtc_dss_register_framedone(
@@ -282,6 +279,8 @@ void omap_crtc_error_irq(struct drm_crtc *crtc, uint32_t irqstatus)
 void omap_crtc_vblank_irq(struct drm_crtc *crtc)
 {
 	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+	struct drm_device *dev = omap_crtc->base.dev;
+	struct omap_drm_private *priv = dev->dev_private;
 	bool pending;
 
 	spin_lock(&crtc->dev->event_lock);
@@ -289,7 +288,7 @@ void omap_crtc_vblank_irq(struct drm_crtc *crtc)
 	 * If the dispc is busy we're racing the flush operation. Try again on
 	 * the next vblank interrupt.
 	 */
-	if (dispc_mgr_go_busy(omap_crtc->channel)) {
+	if (priv->dispc_ops->mgr_go_busy(omap_crtc->channel)) {
 		spin_unlock(&crtc->dev->event_lock);
 		return;
 	}
@@ -313,6 +312,22 @@ void omap_crtc_vblank_irq(struct drm_crtc *crtc)
 	DBG("%s: apply done", omap_crtc->name);
 }
 
+static void omap_crtc_write_crtc_properties(struct drm_crtc *crtc)
+{
+	struct omap_drm_private *priv = crtc->dev->dev_private;
+	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+	struct omap_overlay_manager_info info;
+
+	memset(&info, 0, sizeof(info));
+
+	info.default_color = 0x000000;
+	info.trans_enabled = false;
+	info.partial_alpha_enabled = false;
+	info.cpr_enable = false;
+
+	priv->dispc_ops->mgr_setup(omap_crtc->channel, &info);
+}
+
 /* -----------------------------------------------------------------------------
  * CRTC Functions
  */
@@ -358,6 +373,11 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc)
 {
 	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 	struct drm_display_mode *mode = &crtc->state->adjusted_mode;
+	struct omap_drm_private *priv = crtc->dev->dev_private;
+	const u32 flags_mask = DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_DE_LOW |
+		DISPLAY_FLAGS_PIXDATA_POSEDGE | DISPLAY_FLAGS_PIXDATA_NEGEDGE |
+		DISPLAY_FLAGS_SYNC_POSEDGE | DISPLAY_FLAGS_SYNC_NEGEDGE;
+	unsigned int i;
 
 	DBG("%s: set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
 	    omap_crtc->name, mode->base.id, mode->name,
@@ -367,9 +387,38 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	    mode->type, mode->flags);
 
 	drm_display_mode_to_videomode(mode, &omap_crtc->vm);
-	omap_crtc->vm.flags |= DISPLAY_FLAGS_DE_HIGH |
-			       DISPLAY_FLAGS_PIXDATA_POSEDGE |
-			       DISPLAY_FLAGS_SYNC_NEGEDGE;
+
+	/*
+	 * HACK: This fixes the vm flags.
+	 * struct drm_display_mode does not contain the VSYNC/HSYNC/DE flags
+	 * and they get lost when converting back and forth between
+	 * struct drm_display_mode and struct videomode. The hack below
+	 * goes and fetches the missing flags from the panel drivers.
+	 *
+	 * Correct solution would be to use DRM's bus-flags, but that's not
+	 * easily possible before the omapdrm's panel/encoder driver model
+	 * has been changed to the DRM model.
+	 */
+
+	for (i = 0; i < priv->num_encoders; ++i) {
+		struct drm_encoder *encoder = priv->encoders[i];
+
+		if (encoder->crtc == crtc) {
+			struct omap_dss_device *dssdev;
+
+			dssdev = omap_encoder_get_dssdev(encoder);
+
+			if (dssdev) {
+				struct videomode vm = {0};
+
+				dssdev->driver->get_timings(dssdev, &vm);
+
+				omap_crtc->vm.flags |= vm.flags & flags_mask;
+			}
+
+			break;
+		}
+	}
 }
 
 static int omap_crtc_atomic_check(struct drm_crtc *crtc,
@@ -394,6 +443,7 @@ static void omap_crtc_atomic_begin(struct drm_crtc *crtc,
 static void omap_crtc_atomic_flush(struct drm_crtc *crtc,
 				   struct drm_crtc_state *old_crtc_state)
 {
+	struct omap_drm_private *priv = crtc->dev->dev_private;
 	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 	int ret;
 
@@ -407,9 +457,11 @@ static void omap_crtc_atomic_flush(struct drm_crtc *crtc,
 			length = crtc->state->gamma_lut->length /
 				sizeof(*lut);
 		}
-		dispc_mgr_set_gamma(omap_crtc->channel, lut, length);
+		priv->dispc_ops->mgr_set_gamma(omap_crtc->channel, lut, length);
 	}
 
+	omap_crtc_write_crtc_properties(crtc);
+
 	/* Only flush the CRTC if it is currently enabled. */
 	if (!omap_crtc->enabled)
 		return;
@@ -420,7 +472,7 @@ static void omap_crtc_atomic_flush(struct drm_crtc *crtc,
 	WARN_ON(ret != 0);
 
 	spin_lock_irq(&crtc->dev->event_lock);
-	dispc_mgr_go(omap_crtc->channel);
+	priv->dispc_ops->mgr_go(omap_crtc->channel);
 
 	WARN_ON(omap_crtc->pending);
 	omap_crtc->pending = true;
@@ -521,6 +573,8 @@ static const char *channel_names[] = {
 
 void omap_crtc_pre_init(void)
 {
+	memset(omap_crtcs, 0, sizeof(omap_crtcs));
+
 	dss_install_mgr_ops(&mgr_ops);
 }
 
@@ -531,17 +585,28 @@ void omap_crtc_pre_uninit(void)
 
 /* initialize crtc */
 struct drm_crtc *omap_crtc_init(struct drm_device *dev,
-		struct drm_plane *plane, enum omap_channel channel, int id)
+		struct drm_plane *plane, struct omap_dss_device *dssdev)
 {
+	struct omap_drm_private *priv = dev->dev_private;
 	struct drm_crtc *crtc = NULL;
 	struct omap_crtc *omap_crtc;
+	enum omap_channel channel;
+	struct omap_dss_device *out;
 	int ret;
 
+	out = omapdss_find_output_from_display(dssdev);
+	channel = out->dispc_channel;
+	omap_dss_put_device(out);
+
 	DBG("%s", channel_names[channel]);
 
+	/* Multiple displays on same channel is not allowed */
+	if (WARN_ON(omap_crtcs[channel] != NULL))
+		return ERR_PTR(-EINVAL);
+
 	omap_crtc = kzalloc(sizeof(*omap_crtc), GFP_KERNEL);
 	if (!omap_crtc)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	crtc = &omap_crtc->base;
 
@@ -553,8 +618,10 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 	ret = drm_crtc_init_with_planes(dev, crtc, plane, NULL,
 					&omap_crtc_funcs, NULL);
 	if (ret < 0) {
+		dev_err(dev->dev, "%s(): could not init crtc for: %s\n",
+			__func__, dssdev->name);
 		kfree(omap_crtc);
-		return NULL;
+		return ERR_PTR(ret);
 	}
 
 	drm_crtc_helper_add(crtc, &omap_crtc_helper_funcs);
@@ -566,7 +633,7 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 	 * extracted with dispc_mgr_gamma_size(). If it returns 0
 	 * gamma table is not supprted.
 	 */
-	if (dispc_mgr_gamma_size(channel)) {
+	if (priv->dispc_ops->mgr_gamma_size(channel)) {
 		uint gamma_lut_size = 256;
 
 		drm_crtc_enable_color_mgmt(crtc, 0, false, gamma_lut_size);

drivers/gpu/drm/omapdrm/omap_drv.c

@@ -34,11 +34,6 @@
 #define DRIVER_MINOR		0
 #define DRIVER_PATCHLEVEL	0
 
-static int num_crtc = CONFIG_DRM_OMAP_NUM_CRTCS;
-
-MODULE_PARM_DESC(num_crtc, "Number of overlays to use as CRTCs");
-module_param(num_crtc, int, 0600);
-
 /*
  * mode config funcs
  */
@@ -93,7 +88,7 @@ static void omap_atomic_complete(struct omap_atomic_state_commit *commit)
 	struct drm_atomic_state *old_state = commit->state;
 
 	/* Apply the atomic update. */
-	dispc_runtime_get();
+	priv->dispc_ops->runtime_get();
 
 	drm_atomic_helper_commit_modeset_disables(dev, old_state);
 
@@ -117,7 +112,7 @@ static void omap_atomic_complete(struct omap_atomic_state_commit *commit)
 
 	drm_atomic_helper_cleanup_planes(dev, old_state);
 
-	dispc_runtime_put();
+	priv->dispc_ops->runtime_put();
 
 	drm_atomic_state_put(old_state);
 
@@ -224,20 +219,6 @@ static int get_connector_type(struct omap_dss_device *dssdev)
 	}
 }
 
-static bool channel_used(struct drm_device *dev, enum omap_channel channel)
-{
-	struct omap_drm_private *priv = dev->dev_private;
-	int i;
-
-	for (i = 0; i < priv->num_crtcs; i++) {
-		struct drm_crtc *crtc = priv->crtcs[i];
-
-		if (omap_crtc_channel(crtc) == channel)
-			return true;
-	}
-
-	return false;
-}
 static void omap_disconnect_dssdevs(void)
 {
 	struct omap_dss_device *dssdev = NULL;
@@ -250,7 +231,9 @@ static int omap_connect_dssdevs(void)
 {
 	int r;
 	struct omap_dss_device *dssdev = NULL;
-	bool no_displays = true;
+
+	if (!omapdss_stack_is_ready())
+		return -EPROBE_DEFER;
 
 	for_each_dss_dev(dssdev) {
 		r = dssdev->driver->connect(dssdev);
@@ -260,14 +243,9 @@ static int omap_connect_dssdevs(void)
 		} else if (r) {
 			dev_warn(dssdev->dev, "could not connect display: %s\n",
 				dssdev->name);
-		} else {
-			no_displays = false;
 		}
 	}
 
-	if (no_displays)
-		return -EPROBE_DEFER;
-
 	return 0;
 
 cleanup:
@@ -280,31 +258,6 @@ static int omap_connect_dssdevs(void)
 	return r;
 }
 
-static int omap_modeset_create_crtc(struct drm_device *dev, int id,
-				    enum omap_channel channel,
-				    u32 possible_crtcs)
-{
-	struct omap_drm_private *priv = dev->dev_private;
-	struct drm_plane *plane;
-	struct drm_crtc *crtc;
-
-	plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_PRIMARY,
-		possible_crtcs);
-	if (IS_ERR(plane))
-		return PTR_ERR(plane);
-
-	crtc = omap_crtc_init(dev, plane, channel, id);
-
-	BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs));
-	priv->crtcs[id] = crtc;
-	priv->num_crtcs++;
-
-	priv->planes[id] = plane;
-	priv->num_planes++;
-
-	return 0;
-}
-
 static int omap_modeset_init_properties(struct drm_device *dev)
 {
 	struct omap_drm_private *priv = dev->dev_private;
@@ -320,12 +273,11 @@ static int omap_modeset_init(struct drm_device *dev)
 {
 	struct omap_drm_private *priv = dev->dev_private;
 	struct omap_dss_device *dssdev = NULL;
-	int num_ovls = dss_feat_get_num_ovls();
-	int num_mgrs = dss_feat_get_num_mgrs();
-	int num_crtcs;
-	int i, id = 0;
+	int num_ovls = priv->dispc_ops->get_num_ovls();
+	int num_mgrs = priv->dispc_ops->get_num_mgrs();
+	int num_crtcs, crtc_idx, plane_idx;
 	int ret;
-	u32 possible_crtcs;
+	u32 plane_crtc_mask;
 
 	drm_mode_config_init(dev);
 
@@ -334,162 +286,97 @@ static int omap_modeset_init(struct drm_device *dev)
 		return ret;
 
 	/*
-	 * We usually don't want to create a CRTC for each manager, at least
-	 * not until we have a way to expose private planes to userspace.
-	 * Otherwise there would not be enough video pipes left for drm planes.
-	 * We use the num_crtc argument to limit the number of crtcs we create.
+	 * This function creates exactly one connector, encoder, crtc,
+	 * and primary plane per each connected dss-device. Each
+	 * connector->encoder->crtc chain is expected to be separate
+	 * and each crtc is connect to a single dss-channel. If the
+	 * configuration does not match the expectations or exceeds
+	 * the available resources, the configuration is rejected.
 	 */
-	num_crtcs = min3(num_crtc, num_mgrs, num_ovls);
-	possible_crtcs = (1 << num_crtcs) - 1;
+	num_crtcs = 0;
+	for_each_dss_dev(dssdev)
+		if (omapdss_device_is_connected(dssdev))
+			num_crtcs++;
+
+	if (num_crtcs > num_mgrs || num_crtcs > num_ovls ||
+	    num_crtcs > ARRAY_SIZE(priv->crtcs) ||
+	    num_crtcs > ARRAY_SIZE(priv->planes) ||
+	    num_crtcs > ARRAY_SIZE(priv->encoders) ||
+	    num_crtcs > ARRAY_SIZE(priv->connectors)) {
+		dev_err(dev->dev, "%s(): Too many connected displays\n",
+			__func__);
+		return -EINVAL;
+	}
+
+	/* All planes can be put to any CRTC */
+	plane_crtc_mask = (1 << num_crtcs) - 1;
 
 	dssdev = NULL;
 
+	crtc_idx = 0;
+	plane_idx = 0;
 	for_each_dss_dev(dssdev) {
 		struct drm_connector *connector;
 		struct drm_encoder *encoder;
-		enum omap_channel channel;
-		struct omap_dss_device *out;
+		struct drm_plane *plane;
+		struct drm_crtc *crtc;
 
 		if (!omapdss_device_is_connected(dssdev))
 			continue;
 
 		encoder = omap_encoder_init(dev, dssdev);
-
-		if (!encoder) {
-			dev_err(dev->dev, "could not create encoder: %s\n",
-					dssdev->name);
+		if (!encoder)
 			return -ENOMEM;
-		}
 
 		connector = omap_connector_init(dev,
 				get_connector_type(dssdev), dssdev, encoder);
-
-		if (!connector) {
-			dev_err(dev->dev, "could not create connector: %s\n",
-					dssdev->name);
+		if (!connector)
 			return -ENOMEM;
-		}
 
-		BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));
-		BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors));
+		plane = omap_plane_init(dev, plane_idx, DRM_PLANE_TYPE_PRIMARY,
+					plane_crtc_mask);
+		if (IS_ERR(plane))
+			return PTR_ERR(plane);
 
-		priv->encoders[priv->num_encoders++] = encoder;
-		priv->connectors[priv->num_connectors++] = connector;
+		crtc = omap_crtc_init(dev, plane, dssdev);
+		if (IS_ERR(crtc))
+			return PTR_ERR(crtc);
 
 		drm_mode_connector_attach_encoder(connector, encoder);
+		encoder->possible_crtcs = (1 << crtc_idx);
 
-		/*
-		 * if we have reached the limit of the crtcs we are allowed to
-		 * create, let's not try to look for a crtc for this
-		 * panel/encoder and onwards, we will, of course, populate the
-		 * the possible_crtcs field for all the encoders with the final
-		 * set of crtcs we create
-		 */
-		if (id == num_crtcs)
-			continue;
-
-		/*
-		 * get the recommended DISPC channel for this encoder. For now,
-		 * we only try to get create a crtc out of the recommended, the
-		 * other possible channels to which the encoder can connect are
-		 * not considered.
-		 */
-
-		out = omapdss_find_output_from_display(dssdev);
-		channel = out->dispc_channel;
-		omap_dss_put_device(out);
-
-		/*
-		 * if this channel hasn't already been taken by a previously
-		 * allocated crtc, we create a new crtc for it
-		 */
-		if (!channel_used(dev, channel)) {
-			ret = omap_modeset_create_crtc(dev, id, channel,
-				possible_crtcs);
-			if (ret < 0) {
-				dev_err(dev->dev,
-					"could not create CRTC (channel %u)\n",
-					channel);
-				return ret;
-			}
-
-			id++;
-		}
-	}
-
-	/*
-	 * we have allocated crtcs according to the need of the panels/encoders,
-	 * adding more crtcs here if needed
-	 */
-	for (; id < num_crtcs; id++) {
-
-		/* find a free manager for this crtc */
-		for (i = 0; i < num_mgrs; i++) {
-			if (!channel_used(dev, i))
-				break;
-		}
-
-		if (i == num_mgrs) {
-			/* this shouldn't really happen */
-			dev_err(dev->dev, "no managers left for crtc\n");
-			return -ENOMEM;
-		}
+		priv->crtcs[priv->num_crtcs++] = crtc;
+		priv->planes[priv->num_planes++] = plane;
+		priv->encoders[priv->num_encoders++] = encoder;
+		priv->connectors[priv->num_connectors++] = connector;
 
-		ret = omap_modeset_create_crtc(dev, id, i,
-			possible_crtcs);
-		if (ret < 0) {
-			dev_err(dev->dev,
-				"could not create CRTC (channel %u)\n", i);
-			return ret;
-		}
+		plane_idx++;
+		crtc_idx++;
 	}
 
 	/*
 	 * Create normal planes for the remaining overlays:
 	 */
-	for (; id < num_ovls; id++) {
+	for (; plane_idx < num_ovls; plane_idx++) {
 		struct drm_plane *plane;
 
-		plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_OVERLAY,
-			possible_crtcs);
+		if (WARN_ON(priv->num_planes >= ARRAY_SIZE(priv->planes)))
+			return -EINVAL;
+
+		plane = omap_plane_init(dev, plane_idx, DRM_PLANE_TYPE_OVERLAY,
+			plane_crtc_mask);
 		if (IS_ERR(plane))
 			return PTR_ERR(plane);
 
-		BUG_ON(priv->num_planes >= ARRAY_SIZE(priv->planes));
 		priv->planes[priv->num_planes++] = plane;
 	}
 
-	for (i = 0; i < priv->num_encoders; i++) {
-		struct drm_encoder *encoder = priv->encoders[i];
-		struct omap_dss_device *dssdev =
-					omap_encoder_get_dssdev(encoder);
-		struct omap_dss_device *output;
-
-		output = omapdss_find_output_from_display(dssdev);
-
-		/* figure out which crtc's we can connect the encoder to: */
-		encoder->possible_crtcs = 0;
-		for (id = 0; id < priv->num_crtcs; id++) {
-			struct drm_crtc *crtc = priv->crtcs[id];
-			enum omap_channel crtc_channel;
-
-			crtc_channel = omap_crtc_channel(crtc);
-
-			if (output->dispc_channel == crtc_channel) {
-				encoder->possible_crtcs |= (1 << id);
-				break;
-			}
-		}
-
-		omap_dss_put_device(output);
-	}
-
 	DBG("registered %d planes, %d crtcs, %d encoders and %d connectors\n",
 		priv->num_planes, priv->num_crtcs, priv->num_encoders,
 		priv->num_connectors);
 
-	dev->mode_config.min_width = 32;
-	dev->mode_config.min_height = 32;
+	dev->mode_config.min_width = 8;
+	dev->mode_config.min_height = 2;
 
 	/* note: eventually will need some cpu_is_omapXYZ() type stuff here
 	 * to fill in these limits properly on different OMAP generations..
@@ -629,12 +516,18 @@ static int ioctl_gem_info(struct drm_device *dev, void *data,
 }
 
 static const struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = {
-	DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
-	DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param,
+			  DRM_AUTH | DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param,
+			  DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
+	DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new,
+			  DRM_AUTH | DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep,
+			  DRM_AUTH | DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini,
+			  DRM_AUTH | DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info,
+			  DRM_AUTH | DRM_RENDER_ALLOW),
 };
 
 /*
@@ -724,7 +617,7 @@ static const struct file_operations omapdriver_fops = {
 
 static struct drm_driver omap_drm_driver = {
 	.driver_features = DRIVER_MODESET | DRIVER_GEM  | DRIVER_PRIME |
-		DRIVER_ATOMIC,
+		DRIVER_ATOMIC | DRIVER_RENDER,
 	.open = dev_open,
 	.lastclose = dev_lastclose,
 #ifdef CONFIG_DEBUG_FS
@@ -776,6 +669,8 @@ static int pdev_probe(struct platform_device *pdev)
 		goto err_disconnect_dssdevs;
 	}
 
+	priv->dispc_ops = dispc_get_ops();
+
 	priv->omaprev = pdata->omaprev;
 	priv->wq = alloc_ordered_workqueue("omapdrm", 0);
 
@@ -860,6 +755,8 @@ static int pdev_remove(struct platform_device *pdev)
 	if (priv->fbdev)
 		omap_fbdev_free(ddev);
 
+	drm_atomic_helper_shutdown(ddev);
+
 	drm_mode_config_cleanup(ddev);
 
 	omap_drm_irq_uninstall(ddev);

drivers/gpu/drm/omapdrm/omap_drv.h

@@ -59,6 +59,8 @@ int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
 struct omap_drm_private {
 	uint32_t omaprev;
 
+	const struct dispc_ops *dispc_ops;
+
 	unsigned int num_crtcs;
 	struct drm_crtc *crtcs[8];
 
@@ -135,13 +137,13 @@ enum omap_channel omap_crtc_channel(struct drm_crtc *crtc);
 void omap_crtc_pre_init(void);
 void omap_crtc_pre_uninit(void);
 struct drm_crtc *omap_crtc_init(struct drm_device *dev,
-		struct drm_plane *plane, enum omap_channel channel, int id);
+		struct drm_plane *plane, struct omap_dss_device *dssdev);
 int omap_crtc_wait_pending(struct drm_crtc *crtc);
 void omap_crtc_error_irq(struct drm_crtc *crtc, uint32_t irqstatus);
 void omap_crtc_vblank_irq(struct drm_crtc *crtc);
 
 struct drm_plane *omap_plane_init(struct drm_device *dev,
-		int id, enum drm_plane_type type,
+		int idx, enum drm_plane_type type,
 		u32 possible_crtcs);
 void omap_plane_install_properties(struct drm_plane *plane,
 		struct drm_mode_object *obj);

drivers/gpu/drm/omapdrm/omap_irq.c

@@ -40,8 +40,8 @@ static void omap_irq_update(struct drm_device *dev)
 
 	DBG("irqmask=%08x", irqmask);
 
-	dispc_write_irqenable(irqmask);
-	dispc_read_irqenable();        /* flush posted write */
+	priv->dispc_ops->write_irqenable(irqmask);
+	priv->dispc_ops->read_irqenable();        /* flush posted write */
 }
 
 static void omap_irq_wait_handler(struct omap_irq_wait *wait)
@@ -111,7 +111,7 @@ int omap_irq_enable_vblank(struct drm_crtc *crtc)
 	DBG("dev=%p, crtc=%u", dev, channel);
 
 	spin_lock_irqsave(&priv->wait_lock, flags);
-	priv->irq_mask |= dispc_mgr_get_vsync_irq(channel);
+	priv->irq_mask |= priv->dispc_ops->mgr_get_vsync_irq(channel);
 	omap_irq_update(dev);
 	spin_unlock_irqrestore(&priv->wait_lock, flags);
 
@@ -137,7 +137,7 @@ void omap_irq_disable_vblank(struct drm_crtc *crtc)
 	DBG("dev=%p, crtc=%u", dev, channel);
 
 	spin_lock_irqsave(&priv->wait_lock, flags);
-	priv->irq_mask &= ~dispc_mgr_get_vsync_irq(channel);
+	priv->irq_mask &= ~priv->dispc_ops->mgr_get_vsync_irq(channel);
 	omap_irq_update(dev);
 	spin_unlock_irqrestore(&priv->wait_lock, flags);
 }
@@ -200,9 +200,9 @@ static irqreturn_t omap_irq_handler(int irq, void *arg)
 	unsigned int id;
 	u32 irqstatus;
 
-	irqstatus = dispc_read_irqstatus();
-	dispc_clear_irqstatus(irqstatus);
-	dispc_read_irqstatus();        /* flush posted write */
+	irqstatus = priv->dispc_ops->read_irqstatus();
+	priv->dispc_ops->clear_irqstatus(irqstatus);
+	priv->dispc_ops->read_irqstatus();        /* flush posted write */
 
 	VERB("irqs: %08x", irqstatus);
 
@@ -210,12 +210,12 @@ static irqreturn_t omap_irq_handler(int irq, void *arg)
 		struct drm_crtc *crtc = priv->crtcs[id];
 		enum omap_channel channel = omap_crtc_channel(crtc);
 
-		if (irqstatus & dispc_mgr_get_vsync_irq(channel)) {
+		if (irqstatus & priv->dispc_ops->mgr_get_vsync_irq(channel)) {
 			drm_handle_vblank(dev, id);
 			omap_crtc_vblank_irq(crtc);
 		}
 
-		if (irqstatus & dispc_mgr_get_sync_lost_irq(channel))
+		if (irqstatus & priv->dispc_ops->mgr_get_sync_lost_irq(channel))
 			omap_crtc_error_irq(crtc, irqstatus);
 	}
 
@@ -249,7 +249,7 @@ static const u32 omap_underflow_irqs[] = {
 int omap_drm_irq_install(struct drm_device *dev)
 {
 	struct omap_drm_private *priv = dev->dev_private;
-	unsigned int num_mgrs = dss_feat_get_num_mgrs();
+	unsigned int num_mgrs = priv->dispc_ops->get_num_mgrs();
 	unsigned int max_planes;
 	unsigned int i;
 	int ret;
@@ -267,13 +267,13 @@ int omap_drm_irq_install(struct drm_device *dev)
 	}
 
 	for (i = 0; i < num_mgrs; ++i)
-		priv->irq_mask |= dispc_mgr_get_sync_lost_irq(i);
+		priv->irq_mask |= priv->dispc_ops->mgr_get_sync_lost_irq(i);
 
-	dispc_runtime_get();
-	dispc_clear_irqstatus(0xffffffff);
-	dispc_runtime_put();
+	priv->dispc_ops->runtime_get();
+	priv->dispc_ops->clear_irqstatus(0xffffffff);
+	priv->dispc_ops->runtime_put();
 
-	ret = dispc_request_irq(omap_irq_handler, dev);
+	ret = priv->dispc_ops->request_irq(omap_irq_handler, dev);
 	if (ret < 0)
 		return ret;
 
@@ -284,25 +284,12 @@ int omap_drm_irq_install(struct drm_device *dev)
 
 void omap_drm_irq_uninstall(struct drm_device *dev)
 {
-	unsigned long irqflags;
-	int i;
+	struct omap_drm_private *priv = dev->dev_private;
 
 	if (!dev->irq_enabled)
 		return;
 
 	dev->irq_enabled = false;
 
-	/* Wake up any waiters so they don't hang. */
-	if (dev->num_crtcs) {
-		spin_lock_irqsave(&dev->vbl_lock, irqflags);
-		for (i = 0; i < dev->num_crtcs; i++) {
-			wake_up(&dev->vblank[i].queue);
-			dev->vblank[i].enabled = false;
-			dev->vblank[i].last =
-				dev->driver->get_vblank_counter(dev, i);
-		}
-		spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
-	}
-
-	dispc_free_irq(dev);
+	priv->dispc_ops->free_irq(dev);
 }

drivers/gpu/drm/omapdrm/omap_plane.c

@@ -24,12 +24,6 @@
 #include "omap_dmm_tiler.h"
 #include "omap_drv.h"
 
-/* some hackery because omapdss has an 'enum omap_plane' (which would be
- * better named omap_plane_id).. and compiler seems unhappy about having
- * both a 'struct omap_plane' and 'enum omap_plane'
- */
-#define omap_plane _omap_plane
-
 /*
  * plane funcs
  */
@@ -38,7 +32,7 @@
 
 struct omap_plane {
 	struct drm_plane base;
-	int id;  /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */
+	enum omap_plane_id id;
 	const char *name;
 
 	uint32_t nformats;
@@ -76,6 +70,7 @@ static void omap_plane_cleanup_fb(struct drm_plane *plane,
 static void omap_plane_atomic_update(struct drm_plane *plane,
 				     struct drm_plane_state *old_state)
 {
+	struct omap_drm_private *priv = plane->dev->dev_private;
 	struct omap_plane *omap_plane = to_omap_plane(plane);
 	struct drm_plane_state *state = plane->state;
 	struct omap_plane_state *omap_state = to_omap_plane_state(state);
@@ -123,25 +118,26 @@ static void omap_plane_atomic_update(struct drm_plane *plane,
 	DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
 			&info.paddr, &info.p_uv_addr);
 
-	dispc_ovl_set_channel_out(omap_plane->id,
+	priv->dispc_ops->ovl_set_channel_out(omap_plane->id,
 				  omap_crtc_channel(state->crtc));
 
 	/* and finally, update omapdss: */
-	ret = dispc_ovl_setup(omap_plane->id, &info, false,
+	ret = priv->dispc_ops->ovl_setup(omap_plane->id, &info,
 			      omap_crtc_timings(state->crtc), false);
 	if (ret) {
 		dev_err(plane->dev->dev, "Failed to setup plane %s\n",
 			omap_plane->name);
-		dispc_ovl_enable(omap_plane->id, false);
+		priv->dispc_ops->ovl_enable(omap_plane->id, false);
 		return;
 	}
 
-	dispc_ovl_enable(omap_plane->id, true);
+	priv->dispc_ops->ovl_enable(omap_plane->id, true);
 }
 
 static void omap_plane_atomic_disable(struct drm_plane *plane,
 				      struct drm_plane_state *old_state)
 {
+	struct omap_drm_private *priv = plane->dev->dev_private;
 	struct omap_plane_state *omap_state = to_omap_plane_state(plane->state);
 	struct omap_plane *omap_plane = to_omap_plane(plane);
 
@@ -149,7 +145,7 @@ static void omap_plane_atomic_disable(struct drm_plane *plane,
 	omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
 			   ? 0 : omap_plane->id;
 
-	dispc_ovl_enable(omap_plane->id, false);
+	priv->dispc_ops->ovl_enable(omap_plane->id, false);
 }
 
 static int omap_plane_atomic_check(struct drm_plane *plane,
@@ -328,23 +324,37 @@ static const struct drm_plane_funcs omap_plane_funcs = {
 	.atomic_get_property = omap_plane_atomic_get_property,
 };
 
-static const char *plane_names[] = {
+static const char *plane_id_to_name[] = {
 	[OMAP_DSS_GFX] = "gfx",
 	[OMAP_DSS_VIDEO1] = "vid1",
 	[OMAP_DSS_VIDEO2] = "vid2",
 	[OMAP_DSS_VIDEO3] = "vid3",
 };
 
+static const enum omap_plane_id plane_idx_to_id[] = {
+	OMAP_DSS_GFX,
+	OMAP_DSS_VIDEO1,
+	OMAP_DSS_VIDEO2,
+	OMAP_DSS_VIDEO3,
+};
+
 /* initialize plane */
 struct drm_plane *omap_plane_init(struct drm_device *dev,
-		int id, enum drm_plane_type type,
+		int idx, enum drm_plane_type type,
 		u32 possible_crtcs)
 {
+	struct omap_drm_private *priv = dev->dev_private;
 	struct drm_plane *plane;
 	struct omap_plane *omap_plane;
+	enum omap_plane_id id;
 	int ret;
 
-	DBG("%s: type=%d", plane_names[id], type);
+	if (WARN_ON(idx >= ARRAY_SIZE(plane_idx_to_id)))
+		return ERR_PTR(-EINVAL);
+
+	id = plane_idx_to_id[idx];
+
+	DBG("%s: type=%d", plane_id_to_name[id], type);
 
 	omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
 	if (!omap_plane)
@@ -352,9 +362,9 @@ struct drm_plane *omap_plane_init(struct drm_device *dev,
 
 	omap_plane->nformats = omap_framebuffer_get_formats(
 			omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
-			dss_feat_get_supported_color_modes(id));
+			priv->dispc_ops->ovl_get_color_modes(id));
 	omap_plane->id = id;
-	omap_plane->name = plane_names[id];
+	omap_plane->name = plane_id_to_name[id];
 
 	plane = &omap_plane->base;
 
@@ -371,6 +381,9 @@ struct drm_plane *omap_plane_init(struct drm_device *dev,
 	return plane;
 
 error:
+	dev_err(dev->dev, "%s(): could not create plane: %s\n",
+		__func__, plane_id_to_name[id]);
+
 	kfree(omap_plane);
 	return NULL;
 }