This commit appends the essential CRTCs infrastructure for VKMS. CRTCs
demands other elements to work correctly, in this sense, this patch adds
a new data struct that centralizes the data structures related to the
output, simple planes management, and single encoder attached to the
connector.
Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@xxxxxxxxx>
---
drivers/gpu/drm/vkms/Makefile | 2 +-
drivers/gpu/drm/vkms/vkms_crtc.c | 47 ++++++++++++
drivers/gpu/drm/vkms/vkms_drv.c | 66 +++++-----------
drivers/gpu/drm/vkms/vkms_drv.h | 33 +++++++-
drivers/gpu/drm/vkms/vkms_output.c | 118 +++++++++++++++++++++++++++++
drivers/gpu/drm/vkms/vkms_plane.c | 64 ++++++++++++++++
6 files changed, 277 insertions(+), 53 deletions(-)
create mode 100644 drivers/gpu/drm/vkms/vkms_crtc.c
create mode 100644 drivers/gpu/drm/vkms/vkms_output.c
create mode 100644 drivers/gpu/drm/vkms/vkms_plane.c
diff --git a/drivers/gpu/drm/vkms/Makefile b/drivers/gpu/drm/vkms/Makefile
index 2aef948d3a34..3f774a6a9c58 100644
--- a/drivers/gpu/drm/vkms/Makefile
+++ b/drivers/gpu/drm/vkms/Makefile
@@ -1,3 +1,3 @@
-vkms-y := vkms_drv.o
+vkms-y := vkms_drv.o vkms_plane.o vkms_output.o vkms_crtc.o
obj-$(CONFIG_DRM_VKMS) += vkms.o
diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
new file mode 100644
index 000000000000..4ec1424ed8b8
--- /dev/null
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "vkms_drv.h"
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+
+static const struct drm_crtc_funcs vkms_crtc_funcs = {
+ .set_config = drm_atomic_helper_set_config,
+ .destroy = drm_crtc_cleanup,
+ .page_flip = drm_atomic_helper_page_flip,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+static int vkms_crtc_atomic_check(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
+{
+ return 0;
+}
+
+static const struct drm_crtc_helper_funcs vkms_crtc_helper_funcs = {
+ .atomic_check = vkms_crtc_atomic_check,
+};
+
+int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
+ struct drm_plane *primary, struct drm_plane *cursor)
+{
+ int ret;
+
+ ret = drm_crtc_init_with_planes(dev, crtc, primary, cursor,
+ &vkms_crtc_funcs, NULL);
+ if (ret) {
+ DRM_ERROR("Failed to init CRTC\n");
+ return ret;
+ }
+
+ drm_crtc_helper_add(crtc, &vkms_crtc_helper_funcs);
+
+ return ret;
+}
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index aec3f180f96d..eae5f1f293d0 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -6,7 +6,6 @@
*/
#include <linux/module.h>
-#include <drm/drmP.h>
#include <drm/drm_gem.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_atomic_helper.h>
@@ -18,12 +17,6 @@
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
-#define XRES_MIN 32
-#define YRES_MIN 32
-
-#define XRES_MAX 8192
-#define YRES_MAX 8192
-
static struct vkms_device *vkms_device;
static const struct file_operations vkms_driver_fops = {
@@ -59,25 +52,24 @@ static struct drm_driver vkms_driver = {
.minor = DRIVER_MINOR,
};
-static const u32 vkms_formats[] = {
- DRM_FORMAT_XRGB8888,
+static const struct drm_mode_config_funcs vkms_mode_funcs = {
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
};
-static void vkms_connector_destroy(struct drm_connector *connector)
+static int vkms_modeset_init(struct vkms_device *vkmsdev)
{
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
-}
+ struct drm_device *dev = &vkmsdev->drm;
-static const struct drm_connector_funcs vkms_connector_funcs = {
- .fill_modes = drm_helper_probe_single_connector_modes,
- .destroy = vkms_connector_destroy,
-};
+ drm_mode_config_init(dev);
+ dev->mode_config.funcs = &vkms_mode_funcs;
+ dev->mode_config.min_width = XRES_MIN;
+ dev->mode_config.min_height = YRES_MIN;
+ dev->mode_config.max_width = XRES_MAX;
+ dev->mode_config.max_height = YRES_MAX;
-static const struct drm_mode_config_funcs vkms_mode_funcs = {
- .atomic_check = drm_atomic_helper_check,
- .atomic_commit = drm_atomic_helper_commit,
-};
+ return vkms_output_init(vkmsdev);
+}
static int __init vkms_init(void)
{
@@ -98,48 +90,24 @@ static int __init vkms_init(void)
goto out_fini;
}
- drm_mode_config_init(&vkms_device->drm);
- vkms_device->drm.mode_config.funcs = &vkms_mode_funcs;
- vkms_device->drm.mode_config.min_width = XRES_MIN;
- vkms_device->drm.mode_config.min_height = YRES_MIN;
- vkms_device->drm.mode_config.max_width = XRES_MAX;
- vkms_device->drm.mode_config.max_height = YRES_MAX;
-
- ret = drm_connector_init(&vkms_device->drm, &vkms_device->connector,
- &vkms_connector_funcs,
- DRM_MODE_CONNECTOR_VIRTUAL);
- if (ret < 0) {
- DRM_ERROR("Failed to init connector\n");
- goto out_unregister;
- }
-
- ret = drm_simple_display_pipe_init(&vkms_device->drm,
- &vkms_device->pipe,
- NULL,
- vkms_formats,
- ARRAY_SIZE(vkms_formats),
- NULL,
- &vkms_device->connector);
- if (ret < 0) {
- DRM_ERROR("Cannot setup simple display pipe\n");
+ ret = vkms_modeset_init(vkms_device);
+ if (ret)
goto out_unregister;
- }
ret = drm_dev_register(&vkms_device->drm, 0);
if (ret)
goto out_unregister;
- drm_connector_register(&vkms_device->connector);
-
return 0;
out_unregister:
platform_device_unregister(vkms_device->platform);
+
out_fini:
drm_dev_fini(&vkms_device->drm);
+
out_free:
kfree(vkms_device);
-
return ret;
}
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index c77c5bf5032a..a9f8b6695683 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -1,13 +1,40 @@
#ifndef _VKMS_DRV_H_
#define _VKMS_DRV_H_
-#include <drm/drm_simple_kms_helper.h>
+#include <drm/drmP.h>
+#include <drm/drm.h>
+#include <drm/drm_encoder.h>
+
+#define XRES_MIN 32
+#define YRES_MIN 32
+
+#define XRES_DEF 1024
+#define YRES_DEF 768
+
+#define XRES_MAX 8192
+#define YRES_MAX 8192
+
+static const u32 vkms_formats[] = {
+ DRM_FORMAT_XRGB8888,
+};
+
+struct vkms_output {
+ struct drm_crtc crtc;
+ struct drm_encoder encoder;
+ struct drm_connector connector;
+};
struct vkms_device {
struct drm_device drm;
struct platform_device *platform;
- struct drm_simple_display_pipe pipe;
- struct drm_connector connector;
+ struct vkms_output output;
};
+int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
+ struct drm_plane *primary, struct drm_plane *cursor);
+
+int vkms_output_init(struct vkms_device *vkmsdev);
+
+struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev);
+
#endif /* _VKMS_DRV_H_ */
diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
new file mode 100644
index 000000000000..01e701691ea8
--- /dev/null
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "vkms_drv.h"
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_atomic_helper.h>
+
+static void vkms_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs vkms_connector_funcs = {
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = vkms_connector_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int vkms_conn_get_modes(struct drm_connector *connector)
+{
+ int count;
+
+ count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
+ drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
+
+ return count;
+}
+
+static int vkms_conn_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ return MODE_OK;
+}
+
+static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
+ .get_modes = vkms_conn_get_modes,
+ .mode_valid = vkms_conn_mode_valid,
+};
+
+static const struct drm_encoder_funcs vkms_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+int vkms_output_init(struct vkms_device *vkmsdev)
+{
+ struct vkms_output *output = &vkmsdev->output;
+ struct drm_device *dev = &vkmsdev->drm;
+ struct drm_connector *connector = &output->connector;
+ struct drm_encoder *encoder = &output->encoder;
+ struct drm_crtc *crtc = &output->crtc;
+ struct drm_plane *primary;
+ int ret;
+
+ primary = vkms_plane_init(vkmsdev);
+ if (IS_ERR(primary))
+ return PTR_ERR(primary);
+
+ ret = vkms_crtc_init(dev, crtc, primary, NULL);
+ if (ret)
+ goto err_crtc;
+
+ ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
+ DRM_MODE_CONNECTOR_VIRTUAL);
+ if (ret) {
+ DRM_ERROR("Failed to init connector\n");
+ goto err_connector;
+ }
+
+ drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
+
+ ret = drm_connector_register(connector);
+ if (ret) {
+ DRM_ERROR("Failed to register connector\n");
+ goto err_connector_register;
+ }
+
+ ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
+ DRM_MODE_ENCODER_VIRTUAL, NULL);
+ if (ret) {
+ DRM_ERROR("Failed to init encoder\n");
+ goto err_encoder;
+ }
+ encoder->possible_crtcs = 1;
+
+ ret = drm_mode_connector_attach_encoder(connector, encoder);
+ if (ret) {
+ DRM_ERROR("Failed to attach connector to encoder\n");
+ goto err_attach;
+ }
+
+ drm_mode_config_reset(dev);
+
+ return 0;
+
+err_attach:
+ drm_encoder_cleanup(encoder);
+
+err_encoder:
+ drm_connector_unregister(connector);
+
+err_connector_register:
+ drm_connector_cleanup(connector);
+
+err_connector:
+ drm_crtc_cleanup(crtc);
+
+err_crtc:
+ drm_plane_cleanup(primary);
+ return ret;
+}
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
new file mode 100644
index 000000000000..f7f63143f6d0
--- /dev/null
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "vkms_drv.h"
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_atomic_helper.h>
+
+static const struct drm_plane_funcs vkms_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .destroy = drm_plane_cleanup,
+ .reset = drm_atomic_helper_plane_reset,
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+static int vkms_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ return 0;
+}
+
+static void vkms_primary_plane_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+}
+
+static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {
+ .atomic_check = vkms_plane_atomic_check,
+ .atomic_update = vkms_primary_plane_update,
+};
+
+struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev)
+{
+ struct drm_device *dev = &vkmsdev->drm;
+ struct drm_plane *plane;
+ const u32 *formats;
+ int ret, nformats;
+
+ plane = kzalloc(sizeof(*plane), GFP_KERNEL);
+ if (!plane)
+ return ERR_PTR(-ENOMEM);
+
+ formats = vkms_formats;
+ nformats = ARRAY_SIZE(vkms_formats);
+
+ ret = drm_universal_plane_init(dev, plane, 0,
+ &vkms_plane_funcs,
+ formats, nformats,
+ NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
+ if (ret) {
+ kfree(plane);
+ return ERR_PTR(ret);
+ }
+
+ drm_plane_helper_add(plane, &vkms_primary_helper_funcs);
+
+ return plane;
+}
--
2.17.0
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