Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 240 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
new file mode 100644
index 000000000..d19e796c2
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -0,0 +1,240 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* exynos_drm_crtc.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Authors:
+ *	Inki Dae <inki.dae@samsung.com>
+ *	Joonyoung Shim <jy0922.shim@samsung.com>
+ *	Seung-Woo Kim <sw0312.kim@samsung.com>
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "exynos_drm_crtc.h"
+#include "exynos_drm_drv.h"
+#include "exynos_drm_plane.h"
+
+static void exynos_drm_crtc_atomic_enable(struct drm_crtc *crtc,
+					  struct drm_atomic_state *state)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->atomic_enable)
+		exynos_crtc->ops->atomic_enable(exynos_crtc);
+
+	drm_crtc_vblank_on(crtc);
+}
+
+static void exynos_drm_crtc_atomic_disable(struct drm_crtc *crtc,
+					   struct drm_atomic_state *state)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	drm_crtc_vblank_off(crtc);
+
+	if (exynos_crtc->ops->atomic_disable)
+		exynos_crtc->ops->atomic_disable(exynos_crtc);
+
+	spin_lock_irq(&crtc->dev->event_lock);
+	if (crtc->state->event && !crtc->state->active) {
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		crtc->state->event = NULL;
+	}
+	spin_unlock_irq(&crtc->dev->event_lock);
+}
+
+static int exynos_crtc_atomic_check(struct drm_crtc *crtc,
+				     struct drm_atomic_state *state)
+{
+	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
+									  crtc);
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (!crtc_state->enable)
+		return 0;
+
+	if (exynos_crtc->ops->atomic_check)
+		return exynos_crtc->ops->atomic_check(exynos_crtc, crtc_state);
+
+	return 0;
+}
+
+static void exynos_crtc_atomic_begin(struct drm_crtc *crtc,
+				     struct drm_atomic_state *state)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->atomic_begin)
+		exynos_crtc->ops->atomic_begin(exynos_crtc);
+}
+
+static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
+				     struct drm_atomic_state *state)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->atomic_flush)
+		exynos_crtc->ops->atomic_flush(exynos_crtc);
+}
+
+static enum drm_mode_status exynos_crtc_mode_valid(struct drm_crtc *crtc,
+	const struct drm_display_mode *mode)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->mode_valid)
+		return exynos_crtc->ops->mode_valid(exynos_crtc, mode);
+
+	return MODE_OK;
+}
+
+static bool exynos_crtc_mode_fixup(struct drm_crtc *crtc,
+		const struct drm_display_mode *mode,
+		struct drm_display_mode *adjusted_mode)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->mode_fixup)
+		return exynos_crtc->ops->mode_fixup(exynos_crtc, mode,
+				adjusted_mode);
+
+	return true;
+}
+
+
+static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
+	.mode_valid	= exynos_crtc_mode_valid,
+	.mode_fixup	= exynos_crtc_mode_fixup,
+	.atomic_check	= exynos_crtc_atomic_check,
+	.atomic_begin	= exynos_crtc_atomic_begin,
+	.atomic_flush	= exynos_crtc_atomic_flush,
+	.atomic_enable	= exynos_drm_crtc_atomic_enable,
+	.atomic_disable	= exynos_drm_crtc_atomic_disable,
+};
+
+void exynos_crtc_handle_event(struct exynos_drm_crtc *exynos_crtc)
+{
+	struct drm_crtc *crtc = &exynos_crtc->base;
+	struct drm_pending_vblank_event *event = crtc->state->event;
+	unsigned long flags;
+
+	if (!event)
+		return;
+	crtc->state->event = NULL;
+
+	WARN_ON(drm_crtc_vblank_get(crtc) != 0);
+
+	spin_lock_irqsave(&crtc->dev->event_lock, flags);
+	drm_crtc_arm_vblank_event(crtc, event);
+	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+}
+
+static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	drm_crtc_cleanup(crtc);
+	kfree(exynos_crtc);
+}
+
+static int exynos_drm_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->enable_vblank)
+		return exynos_crtc->ops->enable_vblank(exynos_crtc);
+
+	return 0;
+}
+
+static void exynos_drm_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->disable_vblank)
+		exynos_crtc->ops->disable_vblank(exynos_crtc);
+}
+
+static const struct drm_crtc_funcs exynos_crtc_funcs = {
+	.set_config	= drm_atomic_helper_set_config,
+	.page_flip	= drm_atomic_helper_page_flip,
+	.destroy	= exynos_drm_crtc_destroy,
+	.reset = drm_atomic_helper_crtc_reset,
+	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+	.enable_vblank = exynos_drm_crtc_enable_vblank,
+	.disable_vblank = exynos_drm_crtc_disable_vblank,
+};
+
+struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
+					struct drm_plane *plane,
+					enum exynos_drm_output_type type,
+					const struct exynos_drm_crtc_ops *ops,
+					void *ctx)
+{
+	struct exynos_drm_crtc *exynos_crtc;
+	struct drm_crtc *crtc;
+	int ret;
+
+	exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
+	if (!exynos_crtc)
+		return ERR_PTR(-ENOMEM);
+
+	exynos_crtc->type = type;
+	exynos_crtc->ops = ops;
+	exynos_crtc->ctx = ctx;
+
+	crtc = &exynos_crtc->base;
+
+	ret = drm_crtc_init_with_planes(drm_dev, crtc, plane, NULL,
+					&exynos_crtc_funcs, NULL);
+	if (ret < 0)
+		goto err_crtc;
+
+	drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
+
+	return exynos_crtc;
+
+err_crtc:
+	plane->funcs->destroy(plane);
+	kfree(exynos_crtc);
+	return ERR_PTR(ret);
+}
+
+struct exynos_drm_crtc *exynos_drm_crtc_get_by_type(struct drm_device *drm_dev,
+				       enum exynos_drm_output_type out_type)
+{
+	struct drm_crtc *crtc;
+
+	drm_for_each_crtc(crtc, drm_dev)
+		if (to_exynos_crtc(crtc)->type == out_type)
+			return to_exynos_crtc(crtc);
+
+	return ERR_PTR(-ENODEV);
+}
+
+int exynos_drm_set_possible_crtcs(struct drm_encoder *encoder,
+		enum exynos_drm_output_type out_type)
+{
+	struct exynos_drm_crtc *crtc = exynos_drm_crtc_get_by_type(encoder->dev,
+						out_type);
+
+	if (IS_ERR(crtc))
+		return PTR_ERR(crtc);
+
+	encoder->possible_crtcs = drm_crtc_mask(&crtc->base);
+
+	return 0;
+}
+
+void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+	if (exynos_crtc->ops->te_handler)
+		exynos_crtc->ops->te_handler(exynos_crtc);
+}