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29986cc8a6
The conversion of the rcar-du driver from the I2C slave encoder to the
DRM bridge API left the HDMI encoder's bridge pointer NULL, preventing
the bridge from being handled automatically by the DRM core. Fix it.
Fixes: 1d926114d8 ("drm: rcar-du: Remove i2c slave encoder interface for hdmi encoder")
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
138 lines
3.4 KiB
C
138 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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encoder->bridge = bridge;
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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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