96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
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* Copyright (C) 2012 Red Hat
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* Copyright (c) 2015 - 2016 DisplayLink (UK) Ltd.
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*
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* Based on parts on udlfb.c:
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* Copyright (C) 2009 its respective authors
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License v2. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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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 "evdi_drv.h"
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/* dummy encoder */
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static void evdi_enc_destroy(struct drm_encoder *encoder)
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{
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drm_encoder_cleanup(encoder);
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kfree(encoder);
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}
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static void evdi_encoder_disable(__always_unused struct drm_encoder *encoder)
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{
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}
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static bool evdi_mode_fixup(
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__always_unused struct drm_encoder *encoder,
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__always_unused const struct drm_display_mode *mode,
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__always_unused struct drm_display_mode *adjusted_mode)
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{
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return true;
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}
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static void evdi_encoder_prepare(__always_unused struct drm_encoder *encoder)
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{
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}
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static void evdi_encoder_commit(__always_unused struct drm_encoder *encoder)
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{
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}
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static void evdi_encoder_mode_set(
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__always_unused struct drm_encoder *encoder,
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__always_unused struct drm_display_mode *mode,
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__always_unused struct drm_display_mode *adjusted_mode)
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{
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}
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static void evdi_encoder_dpms(
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__always_unused struct drm_encoder *encoder,
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__always_unused int mode)
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{
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}
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static const struct drm_encoder_helper_funcs evdi_helper_funcs = {
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.dpms = evdi_encoder_dpms,
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.mode_fixup = evdi_mode_fixup,
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.prepare = evdi_encoder_prepare,
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.mode_set = evdi_encoder_mode_set,
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.commit = evdi_encoder_commit,
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.disable = evdi_encoder_disable,
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};
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static const struct drm_encoder_funcs evdi_enc_funcs = {
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.destroy = evdi_enc_destroy,
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};
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struct drm_encoder *evdi_encoder_init(struct drm_device *dev)
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{
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struct drm_encoder *encoder;
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int ret = 0;
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encoder = kzalloc(sizeof(struct drm_encoder), GFP_KERNEL);
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if (!encoder)
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goto err;
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ret = drm_encoder_init(dev, encoder, &evdi_enc_funcs,
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DRM_MODE_ENCODER_TMDS);
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if (ret) {
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EVDI_ERROR("Failed to initialize encoder: %d\n", ret);
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goto err_encoder;
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}
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drm_encoder_helper_add(encoder, &evdi_helper_funcs);
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encoder->possible_crtcs = 1;
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return encoder;
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err_encoder:
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kfree(encoder);
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err:
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return NULL;
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}
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