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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /include/drm/drm_of.h
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/drm/drm_of.h')
-rw-r--r--include/drm/drm_of.h151
1 files changed, 151 insertions, 0 deletions
diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h
new file mode 100644
index 000000000..b9b093add
--- /dev/null
+++ b/include/drm/drm_of.h
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DRM_OF_H__
+#define __DRM_OF_H__
+
+#include <linux/of_graph.h>
+#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
+#include <drm/drm_bridge.h>
+#endif
+
+struct component_master_ops;
+struct component_match;
+struct device;
+struct drm_device;
+struct drm_encoder;
+struct drm_panel;
+struct drm_bridge;
+struct device_node;
+
+/**
+ * enum drm_lvds_dual_link_pixels - Pixel order of an LVDS dual-link connection
+ * @DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS: Even pixels are expected to be generated
+ * from the first port, odd pixels from the second port
+ * @DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS: Odd pixels are expected to be generated
+ * from the first port, even pixels from the second port
+ */
+enum drm_lvds_dual_link_pixels {
+ DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS = 0,
+ DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS = 1,
+};
+
+#ifdef CONFIG_OF
+uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
+ struct device_node *port);
+uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
+ struct device_node *port);
+void drm_of_component_match_add(struct device *master,
+ struct component_match **matchptr,
+ int (*compare)(struct device *, void *),
+ struct device_node *node);
+int drm_of_component_probe(struct device *dev,
+ int (*compare_of)(struct device *, void *),
+ const struct component_master_ops *m_ops);
+int drm_of_encoder_active_endpoint(struct device_node *node,
+ struct drm_encoder *encoder,
+ struct of_endpoint *endpoint);
+int drm_of_find_panel_or_bridge(const struct device_node *np,
+ int port, int endpoint,
+ struct drm_panel **panel,
+ struct drm_bridge **bridge);
+int drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1,
+ const struct device_node *port2);
+#else
+static inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
+ struct device_node *port)
+{
+ return 0;
+}
+
+static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
+ struct device_node *port)
+{
+ return 0;
+}
+
+static inline void
+drm_of_component_match_add(struct device *master,
+ struct component_match **matchptr,
+ int (*compare)(struct device *, void *),
+ struct device_node *node)
+{
+}
+
+static inline int
+drm_of_component_probe(struct device *dev,
+ int (*compare_of)(struct device *, void *),
+ const struct component_master_ops *m_ops)
+{
+ return -EINVAL;
+}
+
+static inline int drm_of_encoder_active_endpoint(struct device_node *node,
+ struct drm_encoder *encoder,
+ struct of_endpoint *endpoint)
+{
+ return -EINVAL;
+}
+static inline int drm_of_find_panel_or_bridge(const struct device_node *np,
+ int port, int endpoint,
+ struct drm_panel **panel,
+ struct drm_bridge **bridge)
+{
+ return -EINVAL;
+}
+
+static inline int
+drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1,
+ const struct device_node *port2)
+{
+ return -EINVAL;
+}
+#endif
+
+/*
+ * drm_of_panel_bridge_remove - remove panel bridge
+ * @np: device tree node containing panel bridge output ports
+ *
+ * Remove the panel bridge of a given DT node's port and endpoint number
+ *
+ * Returns zero if successful, or one of the standard error codes if it fails.
+ */
+static inline int drm_of_panel_bridge_remove(const struct device_node *np,
+ int port, int endpoint)
+{
+#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
+ struct drm_bridge *bridge;
+ struct device_node *remote;
+
+ remote = of_graph_get_remote_node(np, port, endpoint);
+ if (!remote)
+ return -ENODEV;
+
+ bridge = of_drm_find_bridge(remote);
+ drm_panel_bridge_remove(bridge);
+
+ return 0;
+#else
+ return -EINVAL;
+#endif
+}
+
+static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
+ struct drm_encoder *encoder)
+{
+ struct of_endpoint endpoint;
+ int ret = drm_of_encoder_active_endpoint(node, encoder,
+ &endpoint);
+
+ return ret ?: endpoint.id;
+}
+
+static inline int drm_of_encoder_active_port_id(struct device_node *node,
+ struct drm_encoder *encoder)
+{
+ struct of_endpoint endpoint;
+ int ret = drm_of_encoder_active_endpoint(node, encoder,
+ &endpoint);
+
+ return ret ?: endpoint.port;
+}
+
+#endif /* __DRM_OF_H__ */