forked from Minki/linux
1d926114d8
The hdmi output in rcar-du uses the i2c slave encoder interface to link to the adv7511 encoder chip. The kms driver creates encoder and connector entities that internally uses the drm_encoder_slave_funcs ops provided by the slave encoder driver. Change the driver such that it expects a bridge entity instead of a slave encoder. The hdmi connector code isn't needed anymore as we expect the adv7511 bridge driver to create/manage the connector. Note that the kms driver still expects a connector node for hdmi to be present in DT. This node has no connection to the connector created by the bridge driver. Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Archit Taneja <architt@codeaurora.org>
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/*
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* R-Car Display Unit HDMI Encoder
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*
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* Copyright (C) 2014 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/slab.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include "rcar_du_drv.h"
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#include "rcar_du_encoder.h"
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#include "rcar_du_hdmienc.h"
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#include "rcar_du_lvdsenc.h"
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struct rcar_du_hdmienc {
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struct rcar_du_encoder *renc;
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bool enabled;
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};
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#define to_rcar_hdmienc(e) (to_rcar_encoder(e)->hdmi)
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static void rcar_du_hdmienc_disable(struct drm_encoder *encoder)
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{
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struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
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if (hdmienc->renc->lvds)
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rcar_du_lvdsenc_enable(hdmienc->renc->lvds, encoder->crtc,
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false);
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hdmienc->enabled = false;
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}
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static void rcar_du_hdmienc_enable(struct drm_encoder *encoder)
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{
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struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
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if (hdmienc->renc->lvds)
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rcar_du_lvdsenc_enable(hdmienc->renc->lvds, encoder->crtc,
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true);
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hdmienc->enabled = true;
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}
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static int rcar_du_hdmienc_atomic_check(struct drm_encoder *encoder,
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struct drm_crtc_state *crtc_state,
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struct drm_connector_state *conn_state)
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{
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struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
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struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
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if (hdmienc->renc->lvds)
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rcar_du_lvdsenc_atomic_check(hdmienc->renc->lvds,
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adjusted_mode);
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return 0;
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}
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static void rcar_du_hdmienc_mode_set(struct drm_encoder *encoder,
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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 rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
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rcar_du_crtc_route_output(encoder->crtc, hdmienc->renc->output);
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}
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static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
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.mode_set = rcar_du_hdmienc_mode_set,
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.disable = rcar_du_hdmienc_disable,
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.enable = rcar_du_hdmienc_enable,
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.atomic_check = rcar_du_hdmienc_atomic_check,
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};
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static void rcar_du_hdmienc_cleanup(struct drm_encoder *encoder)
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{
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struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
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if (hdmienc->enabled)
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rcar_du_hdmienc_disable(encoder);
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drm_encoder_cleanup(encoder);
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}
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static const struct drm_encoder_funcs encoder_funcs = {
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.destroy = rcar_du_hdmienc_cleanup,
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};
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int rcar_du_hdmienc_init(struct rcar_du_device *rcdu,
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struct rcar_du_encoder *renc, struct device_node *np)
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{
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struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
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struct drm_bridge *bridge;
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struct rcar_du_hdmienc *hdmienc;
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int ret;
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hdmienc = devm_kzalloc(rcdu->dev, sizeof(*hdmienc), GFP_KERNEL);
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if (hdmienc == NULL)
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return -ENOMEM;
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/* Locate drm bridge from the hdmi encoder DT node */
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bridge = of_drm_find_bridge(np);
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if (!bridge)
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return -EPROBE_DEFER;
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ret = drm_encoder_init(rcdu->ddev, encoder, &encoder_funcs,
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DRM_MODE_ENCODER_TMDS, NULL);
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if (ret < 0)
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return ret;
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drm_encoder_helper_add(encoder, &encoder_helper_funcs);
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renc->hdmi = hdmienc;
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hdmienc->renc = renc;
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/* Link drm_bridge to encoder */
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bridge->encoder = encoder;
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ret = drm_bridge_attach(rcdu->ddev, bridge);
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if (ret) {
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drm_encoder_cleanup(encoder);
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return ret;
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}
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return 0;
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}
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