drm/omap: remove legacy DSS device operations

All DSS devices have been converted to bridge API, so
the device operations are always NULL. This removes
the device ops function pointers and all code using it.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-42-tomi.valkeinen@ti.com

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

@@ -161,8 +161,6 @@ int omapdss_device_connect(struct dss_device *dss,
 			   struct omap_dss_device *src,
 			   struct omap_dss_device *dst)
 {
-	int ret;
-
 	dev_dbg(&dss->pdev->dev, "connect(%s, %s)\n",
 		src ? dev_name(src->dev) : "NULL",
 		dst ? dev_name(dst->dev) : "NULL");
@@ -181,14 +179,6 @@ int omapdss_device_connect(struct dss_device *dss,
 
 	dst->dss = dss;
 
-	if (dst->ops && dst->ops->connect) {
-		ret = dst->ops->connect(src, dst);
-		if (ret < 0) {
-			dst->dss = NULL;
-			return ret;
-		}
-	}
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(omapdss_device_connect);
@@ -212,66 +202,10 @@ void omapdss_device_disconnect(struct omap_dss_device *src,
 		return;
 	}
 
-	WARN_ON(dst->state != OMAP_DSS_DISPLAY_DISABLED);
-
-	if (dst->ops && dst->ops->disconnect)
-		dst->ops->disconnect(src, dst);
 	dst->dss = NULL;
 }
 EXPORT_SYMBOL_GPL(omapdss_device_disconnect);
 
-void omapdss_device_pre_enable(struct omap_dss_device *dssdev)
-{
-	if (!dssdev)
-		return;
-
-	omapdss_device_pre_enable(dssdev->next);
-
-	if (dssdev->ops && dssdev->ops->pre_enable)
-		dssdev->ops->pre_enable(dssdev);
-}
-EXPORT_SYMBOL_GPL(omapdss_device_pre_enable);
-
-void omapdss_device_enable(struct omap_dss_device *dssdev)
-{
-	if (!dssdev)
-		return;
-
-	if (dssdev->ops && dssdev->ops->enable)
-		dssdev->ops->enable(dssdev);
-
-	omapdss_device_enable(dssdev->next);
-
-	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
-}
-EXPORT_SYMBOL_GPL(omapdss_device_enable);
-
-void omapdss_device_disable(struct omap_dss_device *dssdev)
-{
-	if (!dssdev)
-		return;
-
-	omapdss_device_disable(dssdev->next);
-
-	if (dssdev->ops && dssdev->ops->disable)
-		dssdev->ops->disable(dssdev);
-}
-EXPORT_SYMBOL_GPL(omapdss_device_disable);
-
-void omapdss_device_post_disable(struct omap_dss_device *dssdev)
-{
-	if (!dssdev)
-		return;
-
-	if (dssdev->ops && dssdev->ops->post_disable)
-		dssdev->ops->post_disable(dssdev);
-
-	omapdss_device_post_disable(dssdev->next);
-
-	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
-}
-EXPORT_SYMBOL_GPL(omapdss_device_post_disable);
-
 /* -----------------------------------------------------------------------------
  * Components Handling
  */

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

@@ -1568,15 +1568,7 @@ static int dss_remove(struct platform_device *pdev)
 
 static void dss_shutdown(struct platform_device *pdev)
 {
-	struct omap_dss_device *dssdev = NULL;
-
 	DSSDBG("shutdown\n");
-
-	for_each_dss_output(dssdev) {
-		if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE &&
-		    dssdev->ops && dssdev->ops->disable)
-			dssdev->ops->disable(dssdev);
-	}
 }
 
 static int dss_runtime_suspend(struct device *dev)

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

@@ -123,11 +123,6 @@ enum omap_dss_dsi_mode {
 	OMAP_DSS_DSI_VIDEO_MODE,
 };
 
-enum omap_dss_display_state {
-	OMAP_DSS_DISPLAY_DISABLED = 0,
-	OMAP_DSS_DISPLAY_ACTIVE,
-};
-
 enum omap_dss_rotation_type {
 	OMAP_DSS_ROT_NONE	= 0,
 	OMAP_DSS_ROT_TILER	= 1 << 0,
@@ -284,24 +279,6 @@ struct omapdss_dsi_ops {
 };
 
 struct omap_dss_device_ops {
-	int (*connect)(struct omap_dss_device *dssdev,
-			struct omap_dss_device *dst);
-	void (*disconnect)(struct omap_dss_device *dssdev,
-			struct omap_dss_device *dst);
-
-	void (*pre_enable)(struct omap_dss_device *dssdev);
-	void (*enable)(struct omap_dss_device *dssdev);
-	void (*disable)(struct omap_dss_device *dssdev);
-	void (*post_disable)(struct omap_dss_device *dssdev);
-
-	int (*check_timings)(struct omap_dss_device *dssdev,
-			     struct drm_display_mode *mode);
-	void (*set_timings)(struct omap_dss_device *dssdev,
-			    const struct drm_display_mode *mode);
-
-	int (*get_modes)(struct omap_dss_device *dssdev,
-			 struct drm_connector *connector);
-
 	const struct omapdss_dsi_ops dsi;
 };
 
@@ -345,8 +322,6 @@ struct omap_dss_device {
 	unsigned long ops_flags;
 	u32 bus_flags;
 
-	enum omap_dss_display_state state;
-
 	/* OMAP DSS output specific fields */
 
 	/* DISPC channel for this output */
@@ -377,10 +352,6 @@ int omapdss_device_connect(struct dss_device *dss,
 			   struct omap_dss_device *dst);
 void omapdss_device_disconnect(struct omap_dss_device *src,
 			       struct omap_dss_device *dst);
-void omapdss_device_pre_enable(struct omap_dss_device *dssdev);
-void omapdss_device_enable(struct omap_dss_device *dssdev);
-void omapdss_device_disable(struct omap_dss_device *dssdev);
-void omapdss_device_post_disable(struct omap_dss_device *dssdev);
 
 int omap_dss_get_num_overlay_managers(void);
 
@@ -400,11 +371,6 @@ int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask);
 int omapdss_compat_init(void);
 void omapdss_compat_uninit(void);
 
-static inline bool omapdss_device_is_enabled(struct omap_dss_device *dssdev)
-{
-	return dssdev->state == OMAP_DSS_DISPLAY_ACTIVE;
-}
-
 enum dss_writeback_channel {
 	DSS_WB_LCD1_MGR =	0,
 	DSS_WB_LCD2_MGR =	1,

drivers/gpu/drm/omapdrm/omap_connector.c

@@ -43,24 +43,8 @@ static void omap_connector_destroy(struct drm_connector *connector)
 
 static int omap_connector_get_modes(struct drm_connector *connector)
 {
-	struct omap_connector *omap_connector = to_omap_connector(connector);
-	struct omap_dss_device *dssdev = NULL;
-	struct omap_dss_device *d;
-
 	DBG("%s", connector->name);
 
-	/*
-	 * If the display pipeline reports modes (e.g. with a fixed resolution
-	 * panel or an analog TV output), query it.
-	 */
-	for (d = omap_connector->output; d; d = d->next) {
-		if (d->ops_flags & OMAP_DSS_DEVICE_OP_MODES)
-			dssdev = d;
-	}
-
-	if (dssdev)
-		return dssdev->ops->get_modes(dssdev, connector);
-
 	/* We can't retrieve modes. The KMS core will add the default modes. */
 	return 0;
 }
@@ -69,19 +53,6 @@ enum drm_mode_status omap_connector_mode_fixup(struct omap_dss_device *dssdev,
 					const struct drm_display_mode *mode,
 					struct drm_display_mode *adjusted_mode)
 {
-	int ret;
-
-	drm_mode_copy(adjusted_mode, mode);
-
-	for (; dssdev; dssdev = dssdev->next) {
-		if (!dssdev->ops || !dssdev->ops->check_timings)
-			continue;
-
-		ret = dssdev->ops->check_timings(dssdev, adjusted_mode);
-		if (ret)
-			return MODE_BAD;
-	}
-
 	return MODE_OK;
 }
 

drivers/gpu/drm/omapdrm/omap_encoder.c

@@ -115,60 +115,6 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
 
 	/* Set timings for all devices in the display pipeline. */
 	dss_mgr_set_timings(output, &vm);
-
-	for (dssdev = output; dssdev; dssdev = dssdev->next) {
-		if (dssdev->ops && dssdev->ops->set_timings)
-			dssdev->ops->set_timings(dssdev, adjusted_mode);
-	}
-}
-
-static void omap_encoder_disable(struct drm_encoder *encoder)
-{
-	struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
-	struct omap_dss_device *dssdev = omap_encoder->output;
-	struct drm_device *dev = encoder->dev;
-
-	dev_dbg(dev->dev, "disable(%s)\n", dssdev->name);
-
-	/*
-	 * Disable the chain of external devices, starting at the one at the
-	 * internal encoder's output.
-	 */
-	omapdss_device_disable(dssdev->next);
-
-	/* Disable the internal encoder. This will disable the DSS output. */
-	if (dssdev->ops && dssdev->ops->disable)
-		dssdev->ops->disable(dssdev);
-	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
-
-	/*
-	 * Perform the post-disable operations on the chain of external devices
-	 * to complete the display pipeline disable.
-	 */
-	omapdss_device_post_disable(dssdev->next);
-}
-
-static void omap_encoder_enable(struct drm_encoder *encoder)
-{
-	struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
-	struct omap_dss_device *dssdev = omap_encoder->output;
-	struct drm_device *dev = encoder->dev;
-
-	dev_dbg(dev->dev, "enable(%s)\n", dssdev->name);
-
-	/* Prepare the chain of external devices for pipeline enable. */
-	omapdss_device_pre_enable(dssdev->next);
-
-	/* Enable the internal encoder. This will enable the DSS output. */
-	if (dssdev->ops && dssdev->ops->enable)
-		dssdev->ops->enable(dssdev);
-	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
-
-	/*
-	 * Enable the chain of external devices, starting at the one at the
-	 * internal encoder's output.
-	 */
-	omapdss_device_enable(dssdev->next);
 }
 
 static int omap_encoder_atomic_check(struct drm_encoder *encoder,
@@ -191,8 +137,6 @@ static int omap_encoder_atomic_check(struct drm_encoder *encoder,
 
 static const struct drm_encoder_helper_funcs omap_encoder_helper_funcs = {
 	.mode_set = omap_encoder_mode_set,
-	.disable = omap_encoder_disable,
-	.enable = omap_encoder_enable,
 	.atomic_check = omap_encoder_atomic_check,
 };