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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* ARC PGU DRM driver.
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*
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* Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
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*/
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_device.h>
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#include <drm/drm_probe_helper.h>
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#include "arcpgu.h"
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#define XRES_DEF 640
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#define YRES_DEF 480
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#define XRES_MAX 8192
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#define YRES_MAX 8192
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struct arcpgu_drm_connector {
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struct drm_connector connector;
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};
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static int arcpgu_drm_connector_get_modes(struct drm_connector *connector)
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{
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int count;
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count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
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drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
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return count;
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}
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static void arcpgu_drm_connector_destroy(struct drm_connector *connector)
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{
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drm_connector_unregister(connector);
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drm_connector_cleanup(connector);
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}
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static const struct drm_connector_helper_funcs
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arcpgu_drm_connector_helper_funcs = {
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.get_modes = arcpgu_drm_connector_get_modes,
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};
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static const struct drm_connector_funcs arcpgu_drm_connector_funcs = {
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.reset = drm_atomic_helper_connector_reset,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = arcpgu_drm_connector_destroy,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static struct drm_encoder_funcs arcpgu_drm_encoder_funcs = {
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.destroy = drm_encoder_cleanup,
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};
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int arcpgu_drm_sim_init(struct drm_device *drm, struct device_node *np)
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{
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struct arcpgu_drm_connector *arcpgu_connector;
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struct drm_encoder *encoder;
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struct drm_connector *connector;
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int ret;
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encoder = devm_kzalloc(drm->dev, sizeof(*encoder), GFP_KERNEL);
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if (encoder == NULL)
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return -ENOMEM;
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encoder->possible_crtcs = 1;
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encoder->possible_clones = 0;
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ret = drm_encoder_init(drm, encoder, &arcpgu_drm_encoder_funcs,
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DRM_MODE_ENCODER_VIRTUAL, NULL);
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if (ret)
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return ret;
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arcpgu_connector = devm_kzalloc(drm->dev, sizeof(*arcpgu_connector),
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GFP_KERNEL);
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if (!arcpgu_connector) {
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ret = -ENOMEM;
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goto error_encoder_cleanup;
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}
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connector = &arcpgu_connector->connector;
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drm_connector_helper_add(connector, &arcpgu_drm_connector_helper_funcs);
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ret = drm_connector_init(drm, connector, &arcpgu_drm_connector_funcs,
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DRM_MODE_CONNECTOR_VIRTUAL);
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if (ret < 0) {
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dev_err(drm->dev, "failed to initialize drm connector\n");
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goto error_encoder_cleanup;
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}
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ret = drm_connector_attach_encoder(connector, encoder);
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if (ret < 0) {
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dev_err(drm->dev, "could not attach connector to encoder\n");
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drm_connector_unregister(connector);
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goto error_connector_cleanup;
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}
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return 0;
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error_connector_cleanup:
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drm_connector_cleanup(connector);
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error_encoder_cleanup:
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drm_encoder_cleanup(encoder);
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return ret;
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}
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