linux/drivers/gpu/drm/msm/dp/dp_drm.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
 */

#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_bridge.h>
#include <drm/drm_bridge_connector.h>
#include <drm/drm_crtc.h>

#include "msm_drv.h"
#include "msm_kms.h"
#include "dp_drm.h"

/**
 * dp_bridge_detect - callback to determine if connector is connected
 * @bridge: Pointer to drm bridge structure
 * Returns: Bridge's 'is connected' status
 */
static enum drm_connector_status dp_bridge_detect(struct drm_bridge *bridge)
{ … }

static int dp_bridge_atomic_check(struct drm_bridge *bridge,
			    struct drm_bridge_state *bridge_state,
			    struct drm_crtc_state *crtc_state,
			    struct drm_connector_state *conn_state)
{ … }


/**
 * dp_bridge_get_modes - callback to add drm modes via drm_mode_probed_add()
 * @bridge: Poiner to drm bridge
 * @connector: Pointer to drm connector structure
 * Returns: Number of modes added
 */
static int dp_bridge_get_modes(struct drm_bridge *bridge, struct drm_connector *connector)
{ … }

static void dp_bridge_debugfs_init(struct drm_bridge *bridge, struct dentry *root)
{ … }

static const struct drm_bridge_funcs dp_bridge_ops = …;

static int edp_bridge_atomic_check(struct drm_bridge *drm_bridge,
				   struct drm_bridge_state *bridge_state,
				   struct drm_crtc_state *crtc_state,
				   struct drm_connector_state *conn_state)
{ … }

static void edp_bridge_atomic_enable(struct drm_bridge *drm_bridge,
				     struct drm_bridge_state *old_bridge_state)
{ … }

static void edp_bridge_atomic_disable(struct drm_bridge *drm_bridge,
				      struct drm_bridge_state *old_bridge_state)
{ … }

static void edp_bridge_atomic_post_disable(struct drm_bridge *drm_bridge,
				struct drm_bridge_state *old_bridge_state)
{ … }

/**
 * edp_bridge_mode_valid - callback to determine if specified mode is valid
 * @bridge: Pointer to drm bridge structure
 * @info: display info
 * @mode: Pointer to drm mode structure
 * Returns: Validity status for specified mode
 */
static enum drm_mode_status edp_bridge_mode_valid(struct drm_bridge *bridge,
					  const struct drm_display_info *info,
					  const struct drm_display_mode *mode)
{ … }

static void edp_bridge_debugfs_init(struct drm_bridge *bridge, struct dentry *root)
{ … }

static const struct drm_bridge_funcs edp_bridge_ops = …;

int dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
			struct drm_encoder *encoder)
{ … }

/* connector initialization */
struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display, struct drm_encoder *encoder,
					    bool yuv_supported)
{ … }