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11/17/2022 06:42:18 AM
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amd_asic_type.h
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ati_pcigart.h
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bridge
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drmP.h
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drm_agpsupport.h
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drm_atomic.h
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drm_atomic_helper.h
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drm_auth.h
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drm_blend.h
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drm_bridge.h
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drm_cache.h
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drm_color_mgmt.h
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drm_connector.h
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drm_crtc.h
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drm_crtc_helper.h
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drm_debugfs.h
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drm_debugfs_crc.h
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drm_device.h
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drm_displayid.h
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drm_dp_dual_mode_helper.h
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drm_dp_helper.h
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drm_dp_mst_helper.h
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drm_drv.h
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drm_edid.h
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drm_encoder.h
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drm_encoder_slave.h
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drm_fb_cma_helper.h
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drm_fb_helper.h
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drm_file.h
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drm_fixed.h
4.71 KB
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drm_flip_work.h
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drm_fourcc.h
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drm_framebuffer.h
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drm_gem.h
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drm_gem_cma_helper.h
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drm_gem_framebuffer_helper.h
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drm_global.h
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drm_hashtab.h
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drm_ioctl.h
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drm_irq.h
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drm_lease.h
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drm_legacy.h
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drm_mipi_dsi.h
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drm_mm.h
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drm_mode_config.h
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drm_mode_object.h
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drm_modes.h
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drm_modeset_helper.h
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drm_modeset_helper_vtables.h
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drm_modeset_lock.h
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drm_of.h
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drm_os_linux.h
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drm_panel.h
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drm_pci.h
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drm_pciids.h
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drm_plane.h
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drm_plane_helper.h
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drm_prime.h
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drm_print.h
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drm_property.h
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drm_rect.h
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drm_scdc_helper.h
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drm_simple_kms_helper.h
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drm_syncobj.h
4.13 KB
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drm_sysfs.h
287 bytes
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drm_vblank.h
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drm_vma_manager.h
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gma_drm.h
1.01 KB
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i2c
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i915_component.h
4.11 KB
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i915_drm.h
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i915_pciids.h
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intel-gtt.h
987 bytes
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intel_lpe_audio.h
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tinydrm
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ttm
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11/17/2022 06:42:23 AM
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Editing: drm_panel.h
Close
/* * Copyright (C) 2013, NVIDIA Corporation. All rights reserved. * * 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, sub license, * 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 NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS 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. */ #ifndef __DRM_PANEL_H__ #define __DRM_PANEL_H__ #include <linux/err.h> #include <linux/errno.h> #include <linux/list.h> struct device_node; struct drm_connector; struct drm_device; struct drm_panel; struct display_timing; /** * struct drm_panel_funcs - perform operations on a given panel * @disable: disable panel (turn off back light, etc.) * @unprepare: turn off panel * @prepare: turn on panel and perform set up * @enable: enable panel (turn on back light, etc.) * @get_modes: add modes to the connector that the panel is attached to and * return the number of modes added * @get_timings: copy display timings into the provided array and return * the number of display timings available * * The .prepare() function is typically called before the display controller * starts to transmit video data. Panel drivers can use this to turn the panel * on and wait for it to become ready. If additional configuration is required * (via a control bus such as I2C, SPI or DSI for example) this is a good time * to do that. * * After the display controller has started transmitting video data, it's safe * to call the .enable() function. This will typically enable the backlight to * make the image on screen visible. Some panels require a certain amount of * time or frames before the image is displayed. This function is responsible * for taking this into account before enabling the backlight to avoid visual * glitches. * * Before stopping video transmission from the display controller it can be * necessary to turn off the panel to avoid visual glitches. This is done in * the .disable() function. Analogously to .enable() this typically involves * turning off the backlight and waiting for some time to make sure no image * is visible on the panel. It is then safe for the display controller to * cease transmission of video data. * * To save power when no video data is transmitted, a driver can power down * the panel. This is the job of the .unprepare() function. */ struct drm_panel_funcs { int (*disable)(struct drm_panel *panel); int (*unprepare)(struct drm_panel *panel); int (*prepare)(struct drm_panel *panel); int (*enable)(struct drm_panel *panel); int (*get_modes)(struct drm_panel *panel); int (*get_timings)(struct drm_panel *panel, unsigned int num_timings, struct display_timing *timings); }; /** * struct drm_panel - DRM panel object * @drm: DRM device owning the panel * @connector: DRM connector that the panel is attached to * @dev: parent device of the panel * @funcs: operations that can be performed on the panel * @list: panel entry in registry */ struct drm_panel { struct drm_device *drm; struct drm_connector *connector; struct device *dev; const struct drm_panel_funcs *funcs; struct list_head list; }; /** * drm_disable_unprepare - power off a panel * @panel: DRM panel * * Calling this function will completely power off a panel (assert the panel's * reset, turn off power supplies, ...). After this function has completed, it * is usually no longer possible to communicate with the panel until another * call to drm_panel_prepare(). * * Return: 0 on success or a negative error code on failure. */ static inline int drm_panel_unprepare(struct drm_panel *panel) { if (panel && panel->funcs && panel->funcs->unprepare) return panel->funcs->unprepare(panel); return panel ? -ENOSYS : -EINVAL; } /** * drm_panel_disable - disable a panel * @panel: DRM panel * * This will typically turn off the panel's backlight or disable the display * drivers. For smart panels it should still be possible to communicate with * the integrated circuitry via any command bus after this call. * * Return: 0 on success or a negative error code on failure. */ static inline int drm_panel_disable(struct drm_panel *panel) { if (panel && panel->funcs && panel->funcs->disable) return panel->funcs->disable(panel); return panel ? -ENOSYS : -EINVAL; } /** * drm_panel_prepare - power on a panel * @panel: DRM panel * * Calling this function will enable power and deassert any reset signals to * the panel. After this has completed it is possible to communicate with any * integrated circuitry via a command bus. * * Return: 0 on success or a negative error code on failure. */ static inline int drm_panel_prepare(struct drm_panel *panel) { if (panel && panel->funcs && panel->funcs->prepare) return panel->funcs->prepare(panel); return panel ? -ENOSYS : -EINVAL; } /** * drm_panel_enable - enable a panel * @panel: DRM panel * * Calling this function will cause the panel display drivers to be turned on * and the backlight to be enabled. Content will be visible on screen after * this call completes. * * Return: 0 on success or a negative error code on failure. */ static inline int drm_panel_enable(struct drm_panel *panel) { if (panel && panel->funcs && panel->funcs->enable) return panel->funcs->enable(panel); return panel ? -ENOSYS : -EINVAL; } /** * drm_panel_get_modes - probe the available display modes of a panel * @panel: DRM panel * * The modes probed from the panel are automatically added to the connector * that the panel is attached to. * * Return: The number of modes available from the panel on success or a * negative error code on failure. */ static inline int drm_panel_get_modes(struct drm_panel *panel) { if (panel && panel->funcs && panel->funcs->get_modes) return panel->funcs->get_modes(panel); return panel ? -ENOSYS : -EINVAL; } void drm_panel_init(struct drm_panel *panel); int drm_panel_add(struct drm_panel *panel); void drm_panel_remove(struct drm_panel *panel); int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector); int drm_panel_detach(struct drm_panel *panel); #if defined(CONFIG_OF) && defined(CONFIG_DRM_PANEL) struct drm_panel *of_drm_find_panel(const struct device_node *np); #else static inline struct drm_panel *of_drm_find_panel(const struct device_node *np) { return NULL; } #endif #endif