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path: root/drivers/gpu/drm/exynos/exynos_drm_encoder.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_encoder.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_encoder.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
new file mode 100644
index 000000000000..7cf6fa86a67e
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -0,0 +1,271 @@
+/* exynos_drm_encoder.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>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "drmP.h"
+#include "drm_crtc_helper.h"
+
+#include "exynos_drm_drv.h"
+#include "exynos_drm_crtc.h"
+#include "exynos_drm_encoder.h"
+
+#define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\
+ drm_encoder)
+
+/*
+ * exynos specific encoder structure.
+ *
+ * @drm_encoder: encoder object.
+ * @manager: specific encoder has its own manager to control a hardware
+ * appropriately and we can access a hardware drawing on this manager.
+ */
+struct exynos_drm_encoder {
+ struct drm_encoder drm_encoder;
+ struct exynos_drm_manager *manager;
+};
+
+static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+ struct drm_device *dev = encoder->dev;
+ struct drm_connector *connector;
+ struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
+
+ DRM_DEBUG_KMS("%s, encoder dpms: %d\n", __FILE__, mode);
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (connector->encoder == encoder) {
+ struct exynos_drm_display *display = manager->display;
+
+ if (display && display->power_on)
+ display->power_on(manager->dev, mode);
+ }
+ }
+}
+
+static bool
+exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ /* drm framework doesn't check NULL. */
+
+ return true;
+}
+
+static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct drm_device *dev = encoder->dev;
+ struct drm_connector *connector;
+ struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
+ struct exynos_drm_manager_ops *manager_ops = manager->ops;
+ struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
+ struct exynos_drm_overlay *overlay = get_exynos_drm_overlay(dev,
+ encoder->crtc);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ mode = adjusted_mode;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (connector->encoder == encoder) {
+ if (manager_ops && manager_ops->mode_set)
+ manager_ops->mode_set(manager->dev, mode);
+
+ if (overlay_ops && overlay_ops->mode_set)
+ overlay_ops->mode_set(manager->dev, overlay);
+ }
+ }
+}
+
+static void exynos_drm_encoder_prepare(struct drm_encoder *encoder)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ /* drm framework doesn't check NULL. */
+}
+
+static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
+{
+ struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
+ struct exynos_drm_manager_ops *manager_ops = manager->ops;
+ struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (manager_ops && manager_ops->commit)
+ manager_ops->commit(manager->dev);
+
+ if (overlay_ops && overlay_ops->commit)
+ overlay_ops->commit(manager->dev);
+}
+
+static struct drm_crtc *
+exynos_drm_encoder_get_crtc(struct drm_encoder *encoder)
+{
+ return encoder->crtc;
+}
+
+static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = {
+ .dpms = exynos_drm_encoder_dpms,
+ .mode_fixup = exynos_drm_encoder_mode_fixup,
+ .mode_set = exynos_drm_encoder_mode_set,
+ .prepare = exynos_drm_encoder_prepare,
+ .commit = exynos_drm_encoder_commit,
+ .get_crtc = exynos_drm_encoder_get_crtc,
+};
+
+static void exynos_drm_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct exynos_drm_encoder *exynos_encoder =
+ to_exynos_encoder(encoder);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ exynos_encoder->manager->pipe = -1;
+
+ drm_encoder_cleanup(encoder);
+ encoder->dev->mode_config.num_encoder--;
+ kfree(exynos_encoder);
+}
+
+static struct drm_encoder_funcs exynos_encoder_funcs = {
+ .destroy = exynos_drm_encoder_destroy,
+};
+
+struct drm_encoder *
+exynos_drm_encoder_create(struct drm_device *dev,
+ struct exynos_drm_manager *manager,
+ unsigned int possible_crtcs)
+{
+ struct drm_encoder *encoder;
+ struct exynos_drm_encoder *exynos_encoder;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (!manager || !possible_crtcs)
+ return NULL;
+
+ if (!manager->dev)
+ return NULL;
+
+ exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL);
+ if (!exynos_encoder) {
+ DRM_ERROR("failed to allocate encoder\n");
+ return NULL;
+ }
+
+ exynos_encoder->manager = manager;
+ encoder = &exynos_encoder->drm_encoder;
+ encoder->possible_crtcs = possible_crtcs;
+
+ DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
+
+ drm_encoder_init(dev, encoder, &exynos_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS);
+
+ drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs);
+
+ DRM_DEBUG_KMS("encoder has been created\n");
+
+ return encoder;
+}
+
+struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder)
+{
+ return to_exynos_encoder(encoder)->manager;
+}
+
+void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data,
+ void (*fn)(struct drm_encoder *, void *))
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_encoder *encoder;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ if (encoder->crtc != crtc)
+ continue;
+
+ fn(encoder, data);
+ }
+}
+
+void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data)
+{
+ struct exynos_drm_manager *manager =
+ to_exynos_encoder(encoder)->manager;
+ struct exynos_drm_manager_ops *manager_ops = manager->ops;
+ int crtc = *(int *)data;
+
+ if (manager->pipe == -1)
+ manager->pipe = crtc;
+
+ if (manager_ops->enable_vblank)
+ manager_ops->enable_vblank(manager->dev);
+}
+
+void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data)
+{
+ struct exynos_drm_manager *manager =
+ to_exynos_encoder(encoder)->manager;
+ struct exynos_drm_manager_ops *manager_ops = manager->ops;
+ int crtc = *(int *)data;
+
+ if (manager->pipe == -1)
+ manager->pipe = crtc;
+
+ if (manager_ops->disable_vblank)
+ manager_ops->disable_vblank(manager->dev);
+}
+
+void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data)
+{
+ struct exynos_drm_manager *manager =
+ to_exynos_encoder(encoder)->manager;
+ struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
+
+ overlay_ops->commit(manager->dev);
+}
+
+void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data)
+{
+ struct exynos_drm_manager *manager =
+ to_exynos_encoder(encoder)->manager;
+ struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
+ struct exynos_drm_overlay *overlay = data;
+
+ overlay_ops->mode_set(manager->dev, overlay);
+}
+
+MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
+MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
+MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC DRM Encoder Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-02 08:12:50 +0300