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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3bb80f2495
Instead of linking encoders and bridges in every driver (and getting it wrong half of the time, as many drivers forget to set the drm_bridge encoder pointer), do so in core code. The drm_bridge_attach() function needs the encoder and optional previous bridge to perform that task, update all the callers. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Stefan Agner <stefan@agner.ch> # For DCU Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> # For atmel-hlcdc Acked-by: Vincent Abriou <vincent.abriou@st.com> # For STI Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> # For sun4i Acked-by: Xinliang Liu <z.liuxinliang@hisilicon.com> # For hisilicon Acked-by: Jyri Sarha <jsarha@ti.com> # For tilcdc Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/1481709550-29226-4-git-send-email-laurent.pinchart+renesas@ideasonboard.com
121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
/*
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* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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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struct drm_display_mode *mode,
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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: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
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mode->base.id, mode->name,
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mode->vrefresh, mode->clock,
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mode->hdisplay, mode->hsync_start,
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mode->hsync_end, mode->htotal,
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mode->vdisplay, mode->vsync_start,
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mode->vsync_end, mode->vtotal,
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mode->type, mode->flags);
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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if ((connector->encoder != NULL) &&
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(connector->encoder->bridge == 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);
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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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