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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /include/drm/drm_of.h | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.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.h | 151 |
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__ */ |