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path: root/drivers/gpu/drm/logicvc/logicvc_mode.c
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Diffstat (limited to 'drivers/gpu/drm/logicvc/logicvc_mode.c')
-rw-r--r--drivers/gpu/drm/logicvc/logicvc_mode.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/gpu/drm/logicvc/logicvc_mode.c b/drivers/gpu/drm/logicvc/logicvc_mode.c
new file mode 100644
index 000000000..d8207ffda
--- /dev/null
+++ b/drivers/gpu/drm/logicvc/logicvc_mode.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-2022 Bootlin
+ * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+ */
+
+#include <linux/types.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mode_config.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "logicvc_drm.h"
+#include "logicvc_interface.h"
+#include "logicvc_layer.h"
+#include "logicvc_mode.h"
+
+static const struct drm_mode_config_funcs logicvc_mode_config_funcs = {
+ .fb_create = drm_gem_fb_create,
+ .output_poll_changed = drm_fb_helper_output_poll_changed,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+int logicvc_mode_init(struct logicvc_drm *logicvc)
+{
+ struct drm_device *drm_dev = &logicvc->drm_dev;
+ struct drm_mode_config *mode_config = &drm_dev->mode_config;
+ struct logicvc_layer *layer_primary;
+ uint32_t preferred_depth;
+ int ret;
+
+ ret = drm_vblank_init(drm_dev, mode_config->num_crtc);
+ if (ret) {
+ drm_err(drm_dev, "Failed to initialize vblank\n");
+ return ret;
+ }
+
+ layer_primary = logicvc_layer_get_primary(logicvc);
+ if (!layer_primary) {
+ drm_err(drm_dev, "Failed to get primary layer\n");
+ return -EINVAL;
+ }
+
+ preferred_depth = layer_primary->formats->depth;
+
+ /* DRM counts alpha in depth, our driver doesn't. */
+ if (layer_primary->formats->alpha)
+ preferred_depth += 8;
+
+ mode_config->min_width = 64;
+ mode_config->max_width = 2048;
+ mode_config->min_height = 1;
+ mode_config->max_height = 2048;
+ mode_config->preferred_depth = preferred_depth;
+ mode_config->funcs = &logicvc_mode_config_funcs;
+
+ drm_mode_config_reset(drm_dev);
+
+ drm_kms_helper_poll_init(drm_dev);
+
+ return 0;
+}
+
+void logicvc_mode_fini(struct logicvc_drm *logicvc)
+{
+ struct drm_device *drm_dev = &logicvc->drm_dev;
+
+ drm_kms_helper_poll_fini(drm_dev);
+}