Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 189 insertions, 0 deletions

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
new file mode 100644
index 000000000..456f3c435
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
@@ -0,0 +1,189 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#ifndef _KOMEDA_KMS_H_
+#define _KOMEDA_KMS_H_
+
+#include <linux/list.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_device.h>
+#include <drm/drm_writeback.h>
+#include <drm/drm_print.h>
+
+/**
+ * struct komeda_plane - komeda instance of drm_plane
+ */
+struct komeda_plane {
+	/** @base: &drm_plane */
+	struct drm_plane base;
+	/**
+	 * @layer:
+	 *
+	 * represents available layer input pipelines for this plane.
+	 *
+	 * NOTE:
+	 * the layer is not for a specific Layer, but indicate a group of
+	 * Layers with same capabilities.
+	 */
+	struct komeda_layer *layer;
+};
+
+/**
+ * struct komeda_plane_state
+ *
+ * The plane_state can be split into two data flow (left/right) and handled
+ * by two layers &komeda_plane.layer and &komeda_plane.layer.right
+ */
+struct komeda_plane_state {
+	/** @base: &drm_plane_state */
+	struct drm_plane_state base;
+	/** @zlist_node: zorder list node */
+	struct list_head zlist_node;
+
+	/** @layer_split: on/off layer_split */
+	u8 layer_split : 1;
+};
+
+/**
+ * struct komeda_wb_connector
+ */
+struct komeda_wb_connector {
+	/** @base: &drm_writeback_connector */
+	struct drm_writeback_connector base;
+
+	/** @wb_layer: represents associated writeback pipeline of komeda */
+	struct komeda_layer *wb_layer;
+};
+
+/**
+ * struct komeda_crtc
+ */
+struct komeda_crtc {
+	/** @base: &drm_crtc */
+	struct drm_crtc base;
+	/** @master: only master has display output */
+	struct komeda_pipeline *master;
+	/**
+	 * @slave: optional
+	 *
+	 * Doesn't have its own display output, the handled data flow will
+	 * merge into the master.
+	 */
+	struct komeda_pipeline *slave;
+
+	/** @slave_planes: komeda slave planes mask */
+	u32 slave_planes;
+
+	/** @wb_conn: komeda write back connector */
+	struct komeda_wb_connector *wb_conn;
+
+	/** @disable_done: this flip_done is for tracing the disable */
+	struct completion *disable_done;
+};
+
+/**
+ * struct komeda_crtc_state
+ */
+struct komeda_crtc_state {
+	/** @base: &drm_crtc_state */
+	struct drm_crtc_state base;
+
+	/* private properties */
+
+	/* computed state which are used by validate/check */
+	/**
+	 * @affected_pipes:
+	 * the affected pipelines in once display instance
+	 */
+	u32 affected_pipes;
+	/**
+	 * @active_pipes:
+	 * the active pipelines in once display instance
+	 */
+	u32 active_pipes;
+
+	/** @clock_ratio: ratio of (aclk << 32)/pxlclk */
+	u64 clock_ratio;
+
+	/** @max_slave_zorder: the maximum of slave zorder */
+	u32 max_slave_zorder;
+};
+
+/** struct komeda_kms_dev - for gather KMS related things */
+struct komeda_kms_dev {
+	/** @base: &drm_device */
+	struct drm_device base;
+
+	/** @n_crtcs: valid numbers of crtcs in &komeda_kms_dev.crtcs */
+	int n_crtcs;
+	/** @crtcs: crtcs list */
+	struct komeda_crtc crtcs[KOMEDA_MAX_PIPELINES];
+};
+
+#define to_kplane(p)	container_of(p, struct komeda_plane, base)
+#define to_kplane_st(p)	container_of(p, struct komeda_plane_state, base)
+#define to_kconn(p)	container_of(p, struct komeda_wb_connector, base)
+#define to_kcrtc(p)	container_of(p, struct komeda_crtc, base)
+#define to_kcrtc_st(p)	container_of(p, struct komeda_crtc_state, base)
+#define to_kdev(p)	container_of(p, struct komeda_kms_dev, base)
+#define to_wb_conn(x)	container_of(x, struct drm_writeback_connector, base)
+
+static inline bool is_writeback_only(struct drm_crtc_state *st)
+{
+	struct komeda_wb_connector *wb_conn = to_kcrtc(st->crtc)->wb_conn;
+	struct drm_connector *conn = wb_conn ? &wb_conn->base.base : NULL;
+
+	return conn && (st->connector_mask == BIT(drm_connector_index(conn)));
+}
+
+static inline bool
+is_only_changed_connector(struct drm_crtc_state *st, struct drm_connector *conn)
+{
+	struct drm_crtc_state *old_st;
+	u32 changed_connectors;
+
+	old_st = drm_atomic_get_old_crtc_state(st->state, st->crtc);
+	changed_connectors = st->connector_mask ^ old_st->connector_mask;
+
+	return BIT(drm_connector_index(conn)) == changed_connectors;
+}
+
+static inline bool has_flip_h(u32 rot)
+{
+	u32 rotation = drm_rotation_simplify(rot,
+					     DRM_MODE_ROTATE_0 |
+					     DRM_MODE_ROTATE_90 |
+					     DRM_MODE_REFLECT_MASK);
+
+	if (rotation & DRM_MODE_ROTATE_90)
+		return !!(rotation & DRM_MODE_REFLECT_Y);
+	else
+		return !!(rotation & DRM_MODE_REFLECT_X);
+}
+
+void komeda_crtc_get_color_config(struct drm_crtc_state *crtc_st,
+				  u32 *color_depths, u32 *color_formats);
+unsigned long komeda_crtc_get_aclk(struct komeda_crtc_state *kcrtc_st);
+
+int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
+
+int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
+int komeda_kms_add_planes(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
+int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
+				struct komeda_dev *mdev);
+int komeda_kms_add_wb_connectors(struct komeda_kms_dev *kms,
+				 struct komeda_dev *mdev);
+void komeda_kms_cleanup_private_objs(struct komeda_kms_dev *kms);
+
+void komeda_crtc_handle_event(struct komeda_crtc   *kcrtc,
+			      struct komeda_events *evts);
+
+struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev);
+void komeda_kms_detach(struct komeda_kms_dev *kms);
+
+#endif /*_KOMEDA_KMS_H_*/