a74549dd55
The i915.modeset parameter doesn't really provide any useful benefit over the nomodeset kernel parameter. Anything that i915.modeset does can be achieved via nomodeset or not probing i915 at all. Unfortunately, the i915.modeset parameter is widely referenced on various forums, and removing it is not that simple. Start off by deprecating it in the module parameter documentation, and logging a warning message on non-default values. Cc: Daniel Veter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/2c63e2048eed64f728478fbcfc84f51c7f3212e6.1724843853.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright © 2021 Intel Corporation
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*/
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#include <drm/drm_drv.h>
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#include "gem/i915_gem_context.h"
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#include "gem/i915_gem_object.h"
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#include "i915_active.h"
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#include "i915_driver.h"
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#include "i915_params.h"
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#include "i915_pci.h"
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#include "i915_perf.h"
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#include "i915_request.h"
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#include "i915_scheduler.h"
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#include "i915_selftest.h"
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#include "i915_vma.h"
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#include "i915_vma_resource.h"
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static int i915_check_nomodeset(void)
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{
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bool use_kms = true;
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/*
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* Enable KMS by default, unless explicitly overriden by
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* either the i915.modeset parameter or by the
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* nomodeset boot option.
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*/
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if (i915_modparams.modeset == 0)
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pr_warn("i915.modeset=0 is deprecated. Please use the 'nomodeset' kernel parameter instead.\n");
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else if (i915_modparams.modeset != -1)
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pr_warn("i915.modeset=%d is deprecated. Please remove it and the 'nomodeset' kernel parameter instead.\n",
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i915_modparams.modeset);
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if (i915_modparams.modeset == 0)
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use_kms = false;
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if (drm_firmware_drivers_only() && i915_modparams.modeset == -1)
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use_kms = false;
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if (!use_kms) {
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DRM_DEBUG_DRIVER("KMS disabled.\n");
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return -ENODEV;
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}
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return 0;
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}
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static const struct {
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int (*init)(void);
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void (*exit)(void);
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} init_funcs[] = {
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{ .init = i915_check_nomodeset },
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{ .init = i915_active_module_init,
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.exit = i915_active_module_exit },
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{ .init = i915_context_module_init,
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.exit = i915_context_module_exit },
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{ .init = i915_gem_context_module_init,
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.exit = i915_gem_context_module_exit },
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{ .init = i915_objects_module_init,
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.exit = i915_objects_module_exit },
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{ .init = i915_request_module_init,
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.exit = i915_request_module_exit },
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{ .init = i915_scheduler_module_init,
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.exit = i915_scheduler_module_exit },
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{ .init = i915_vma_module_init,
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.exit = i915_vma_module_exit },
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{ .init = i915_vma_resource_module_init,
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.exit = i915_vma_resource_module_exit },
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{ .init = i915_mock_selftests },
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{ .init = i915_pmu_init,
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.exit = i915_pmu_exit },
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{ .init = i915_pci_register_driver,
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.exit = i915_pci_unregister_driver },
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{ .init = i915_perf_sysctl_register,
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.exit = i915_perf_sysctl_unregister },
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};
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static int init_progress;
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static int __init i915_init(void)
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{
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int err, i;
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for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {
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err = init_funcs[i].init();
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if (err < 0) {
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while (i--) {
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if (init_funcs[i].exit)
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init_funcs[i].exit();
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}
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return err;
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} else if (err > 0) {
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/*
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* Early-exit success is reserved for things which
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* don't have an exit() function because we have no
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* idea how far they got or how to partially tear
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* them down.
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*/
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WARN_ON(init_funcs[i].exit);
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break;
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}
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}
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init_progress = i;
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return 0;
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}
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static void __exit i915_exit(void)
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{
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int i;
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for (i = init_progress - 1; i >= 0; i--) {
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GEM_BUG_ON(i >= ARRAY_SIZE(init_funcs));
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if (init_funcs[i].exit)
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init_funcs[i].exit();
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}
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}
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module_init(i915_init);
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module_exit(i915_exit);
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MODULE_AUTHOR("Tungsten Graphics, Inc.");
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MODULE_AUTHOR("Intel Corporation");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL and additional rights");
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