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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /drivers/gpu/drm/drm_kms_helper_common.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/drm_kms_helper_common.c')
-rw-r--r-- | drivers/gpu/drm/drm_kms_helper_common.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_kms_helper_common.c b/drivers/gpu/drm/drm_kms_helper_common.c new file mode 100644 index 000000000..f933da165 --- /dev/null +++ b/drivers/gpu/drm/drm_kms_helper_common.c @@ -0,0 +1,88 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + * Authors: + * Rafael Antognolli <rafael.antognolli@intel.com> + * + */ + +#include <linux/module.h> + +#include <drm/drm_print.h> + +#include "drm_crtc_helper_internal.h" + +MODULE_AUTHOR("David Airlie, Jesse Barnes"); +MODULE_DESCRIPTION("DRM KMS helper"); +MODULE_LICENSE("GPL and additional rights"); + +#if IS_ENABLED(CONFIG_DRM_LOAD_EDID_FIRMWARE) + +/* Backward compatibility for drm_kms_helper.edid_firmware */ +static int edid_firmware_set(const char *val, const struct kernel_param *kp) +{ + DRM_NOTE("drm_kms_helper.edid_firmware is deprecated, please use drm.edid_firmware instead.\n"); + + return __drm_set_edid_firmware_path(val); +} + +static int edid_firmware_get(char *buffer, const struct kernel_param *kp) +{ + return __drm_get_edid_firmware_path(buffer, PAGE_SIZE); +} + +static const struct kernel_param_ops edid_firmware_ops = { + .set = edid_firmware_set, + .get = edid_firmware_get, +}; + +module_param_cb(edid_firmware, &edid_firmware_ops, NULL, 0644); +__MODULE_PARM_TYPE(edid_firmware, "charp"); +MODULE_PARM_DESC(edid_firmware, + "DEPRECATED. Use drm.edid_firmware module parameter instead."); + +#endif + +static int __init drm_kms_helper_init(void) +{ + /* + * The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) + * but the module doesn't depend on any fb console symbols. At least + * attempt to load fbcon to avoid leaving the system without a usable + * console. + */ + if (IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION) && + IS_MODULE(CONFIG_FRAMEBUFFER_CONSOLE) && + !IS_ENABLED(CONFIG_EXPERT)) + request_module_nowait("fbcon"); + + return drm_dp_aux_dev_init(); +} + +static void __exit drm_kms_helper_exit(void) +{ + /* Call exit functions from specific kms helpers here */ + drm_dp_aux_dev_exit(); +} + +module_init(drm_kms_helper_init); +module_exit(drm_kms_helper_exit); |