112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
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*/
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#include "edp.h"
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struct edp_bridge {
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struct drm_bridge base;
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struct msm_edp *edp;
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};
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#define to_edp_bridge(x) container_of(x, struct edp_bridge, base)
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void edp_bridge_destroy(struct drm_bridge *bridge)
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{
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}
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static void edp_bridge_pre_enable(struct drm_bridge *bridge)
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{
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struct edp_bridge *edp_bridge = to_edp_bridge(bridge);
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struct msm_edp *edp = edp_bridge->edp;
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DBG("");
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msm_edp_ctrl_power(edp->ctrl, true);
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}
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static void edp_bridge_enable(struct drm_bridge *bridge)
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{
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DBG("");
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}
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static void edp_bridge_disable(struct drm_bridge *bridge)
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{
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DBG("");
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}
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static void edp_bridge_post_disable(struct drm_bridge *bridge)
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{
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struct edp_bridge *edp_bridge = to_edp_bridge(bridge);
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struct msm_edp *edp = edp_bridge->edp;
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DBG("");
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msm_edp_ctrl_power(edp->ctrl, false);
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}
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static void edp_bridge_mode_set(struct drm_bridge *bridge,
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const struct drm_display_mode *mode,
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const struct drm_display_mode *adjusted_mode)
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{
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struct drm_device *dev = bridge->dev;
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struct drm_connector *connector;
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struct edp_bridge *edp_bridge = to_edp_bridge(bridge);
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struct msm_edp *edp = edp_bridge->edp;
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DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode));
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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struct drm_encoder *encoder = connector->encoder;
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struct drm_bridge *first_bridge;
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if (!connector->encoder)
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continue;
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first_bridge = drm_bridge_chain_get_first_bridge(encoder);
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if (bridge == first_bridge) {
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msm_edp_ctrl_timing_cfg(edp->ctrl,
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adjusted_mode, &connector->display_info);
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break;
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}
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}
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}
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static const struct drm_bridge_funcs edp_bridge_funcs = {
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.pre_enable = edp_bridge_pre_enable,
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.enable = edp_bridge_enable,
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.disable = edp_bridge_disable,
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.post_disable = edp_bridge_post_disable,
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.mode_set = edp_bridge_mode_set,
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};
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/* initialize bridge */
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struct drm_bridge *msm_edp_bridge_init(struct msm_edp *edp)
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{
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struct drm_bridge *bridge = NULL;
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struct edp_bridge *edp_bridge;
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int ret;
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edp_bridge = devm_kzalloc(edp->dev->dev,
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sizeof(*edp_bridge), GFP_KERNEL);
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if (!edp_bridge) {
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ret = -ENOMEM;
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goto fail;
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}
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edp_bridge->edp = edp;
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bridge = &edp_bridge->base;
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bridge->funcs = &edp_bridge_funcs;
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ret = drm_bridge_attach(edp->encoder, bridge, NULL, 0);
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if (ret)
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goto fail;
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return bridge;
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fail:
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if (bridge)
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edp_bridge_destroy(bridge);
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return ERR_PTR(ret);
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}
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