--- /dev/null
+/* 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>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+
+#include "exynos_drm_drv.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.
+ * @display: the display structure that maps to this encoder
+ */
+struct exynos_drm_encoder {
+ struct drm_encoder drm_encoder;
+ struct exynos_drm_display *display;
+};
+
+static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+ struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+ struct exynos_drm_display *display = exynos_encoder->display;
+
+ DRM_DEBUG_KMS("encoder dpms: %d\n", mode);
+
+ if (display->ops->dpms)
+ display->ops->dpms(display, mode);
+}
+
+static bool
+exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct drm_device *dev = encoder->dev;
+ struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+ struct exynos_drm_display *display = exynos_encoder->display;
+ struct drm_connector *connector;
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (connector->encoder != encoder)
+ continue;
+
+ if (display->ops->mode_fixup)
+ display->ops->mode_fixup(display, connector, mode,
+ adjusted_mode);
+ }
+
+ 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 exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+ struct exynos_drm_display *display = exynos_encoder->display;
+
+ if (display->ops->mode_set)
+ display->ops->mode_set(display, adjusted_mode);
+}
+
+static void exynos_drm_encoder_prepare(struct drm_encoder *encoder)
+{
+ /* drm framework doesn't check NULL. */
+}
+
+static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
+{
+ struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+ struct exynos_drm_display *display = exynos_encoder->display;
+
+ if (display->ops->dpms)
+ display->ops->dpms(display, DRM_MODE_DPMS_ON);
+
+ if (display->ops->commit)
+ display->ops->commit(display);
+}
+
+static void exynos_drm_encoder_disable(struct drm_encoder *encoder)
+{
+ struct drm_plane *plane;
+ struct drm_device *dev = encoder->dev;
+
+ exynos_drm_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
+
+ /* all planes connected to this encoder should be also disabled. */
+ drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
+ if (plane->crtc && (plane->crtc == encoder->crtc))
+ plane->funcs->disable_plane(plane);
+ }
+}
+
+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,
+ .disable = exynos_drm_encoder_disable,
+};
+
+static void exynos_drm_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+
+ drm_encoder_cleanup(encoder);
+ kfree(exynos_encoder);
+}
+
+static struct drm_encoder_funcs exynos_encoder_funcs = {
+ .destroy = exynos_drm_encoder_destroy,
+};
+
+static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder)
+{
+ struct drm_encoder *clone;
+ struct drm_device *dev = encoder->dev;
+ struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+ struct exynos_drm_display *display = exynos_encoder->display;
+ unsigned int clone_mask = 0;
+ int cnt = 0;
+
+ list_for_each_entry(clone, &dev->mode_config.encoder_list, head) {
+ switch (display->type) {
+ case EXYNOS_DISPLAY_TYPE_LCD:
+ case EXYNOS_DISPLAY_TYPE_HDMI:
+ case EXYNOS_DISPLAY_TYPE_VIDI:
+ clone_mask |= (1 << (cnt++));
+ break;
+ default:
+ continue;
+ }
+ }
+
+ return clone_mask;
+}
+
+void exynos_drm_encoder_setup(struct drm_device *dev)
+{
+ struct drm_encoder *encoder;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
+ encoder->possible_clones = exynos_drm_encoder_clones(encoder);
+}
+
+struct drm_encoder *
+exynos_drm_encoder_create(struct drm_device *dev,
+ struct exynos_drm_display *display,
+ unsigned long possible_crtcs)
+{
+ struct drm_encoder *encoder;
+ struct exynos_drm_encoder *exynos_encoder;
+
+ if (!possible_crtcs)
+ return NULL;
+
+ exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL);
+ if (!exynos_encoder)
+ return NULL;
+
+ exynos_encoder->display = display;
+ 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_display *exynos_drm_get_display(struct drm_encoder *encoder)
+{
+ return to_exynos_encoder(encoder)->display;
+}
Code Review / kvmfornfv.git / blobdiff