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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /drivers/gpu/drm/drm_kms_helper_common.c
parentInitial commit. (diff)
downloadlinux-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.c88
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);