This patch adds support for creating multiple virtual connectors, in
case one would need it. Use module parameters to specify how many,
defaulting to just one, allocating from the start, a maximum of 4
possible outputs.
This is of particular importance when testing out the DRM backend in
compositors, but also to be able to independently handle multiple
outputs/connectors, like setting one to off/sleep on while the others
are on, and combinations that arise from that.
Signed-off-by: Marius Vlad <marius.vlad@xxxxxxxxxxxxx>
---
drivers/gpu/drm/vkms/vkms_crtc.c | 3 +--
drivers/gpu/drm/vkms/vkms_drv.c | 26 ++++++++++++++++++++++----
drivers/gpu/drm/vkms/vkms_drv.h | 8 +++++---
drivers/gpu/drm/vkms/vkms_output.c | 5 ++---
drivers/gpu/drm/vkms/vkms_writeback.c | 18 ++++++++----------
5 files changed, 38 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
index 57bbd32e9beb..0b6c40ac80b6 100644
--- a/drivers/gpu/drm/vkms/vkms_crtc.c
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -89,8 +89,7 @@ static bool vkms_get_vblank_timestamp(struct drm_crtc *crtc,
{
struct drm_device *dev = crtc->dev;
unsigned int pipe = crtc->index;
- struct vkms_device *vkmsdev = drm_device_to_vkms_device(dev);
- struct vkms_output *output = &vkmsdev->output;
+ struct vkms_output *output = drm_crtc_to_vkms_output(crtc);
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
if (!READ_ONCE(vblank->enabled)) {
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index 0ffe5f0e33f7..205546dafc70 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -51,13 +51,19 @@ static bool enable_overlay;
module_param_named(enable_overlay, enable_overlay, bool, 0444);
MODULE_PARM_DESC(enable_overlay, "Enable/Disable overlay support");
+static int max_connectors = 1;
+module_param_named(max_connectors, max_connectors, int, 0444);
+MODULE_PARM_DESC(max_connectors, "Specify how many virtual connectors to create");
+
DEFINE_DRM_GEM_FOPS(vkms_driver_fops);
static void vkms_release(struct drm_device *dev)
{
- struct vkms_device *vkms = drm_device_to_vkms_device(dev);
+ int i;
+ struct vkms_device *vkmsdev = drm_device_to_vkms_device(dev);
- destroy_workqueue(vkms->output.composer_workq);
+ for (i = 0; i < vkmsdev->config->max_connectors; i++)
+ destroy_workqueue(vkmsdev->output[i].composer_workq);
}
static void vkms_atomic_commit_tail(struct drm_atomic_state *old_state)
@@ -98,6 +104,7 @@ static int vkms_config_show(struct seq_file *m, void *data)
seq_printf(m, "writeback=%d\n", vkmsdev->config->writeback);
seq_printf(m, "cursor=%d\n", vkmsdev->config->cursor);
seq_printf(m, "overlay=%d\n", vkmsdev->config->overlay);
+ seq_printf(m, "connectors=%d\n", vkmsdev->config->max_connectors);
return 0;
}
@@ -140,6 +147,7 @@ static const struct drm_mode_config_helper_funcs vkms_mode_config_helpers = {
static int vkms_modeset_init(struct vkms_device *vkmsdev)
{
struct drm_device *dev = &vkmsdev->drm;
+ int i, ret = 0;
drm_mode_config_init(dev);
dev->mode_config.funcs = &vkms_mode_funcs;
@@ -155,7 +163,14 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev)
dev->mode_config.preferred_depth = 0;
dev->mode_config.helper_private = &vkms_mode_config_helpers;
- return vkms_output_init(vkmsdev, 0);
+ for (i = 0; i < vkmsdev->config->max_connectors; i++) {
+ ret = vkms_output_init(vkmsdev, i);
+ if (ret)
+ return ret;
+ }
+
+ drm_mode_config_reset(dev);
+ return ret;
}
static int vkms_create(struct vkms_config *config)
@@ -191,7 +206,7 @@ static int vkms_create(struct vkms_config *config)
goto out_devres;
}
- ret = drm_vblank_init(&vkms_device->drm, 1);
+ ret = drm_vblank_init(&vkms_device->drm, config->max_connectors);
if (ret) {
DRM_ERROR("Failed to vblank\n");
goto out_devres;
@@ -229,6 +244,9 @@ static int __init vkms_init(void)
config->cursor = enable_cursor;
config->writeback = enable_writeback;
config->overlay = enable_overlay;
+ config->max_connectors = max_connectors;
+ if (config->max_connectors > NUM_MAX_CONNECTORS)
+ config->max_connectors = NUM_MAX_CONNECTORS;
return vkms_create(config);
}
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 0a67b8073f7e..fdea37db3b1d 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -21,7 +21,8 @@
#define XRES_MAX 8192
#define YRES_MAX 8192
-#define NUM_OVERLAY_PLANES 8
+#define NUM_OVERLAY_PLANES 8
+#define NUM_MAX_CONNECTORS 4
struct vkms_frame_info {
struct drm_framebuffer *fb;
@@ -113,6 +114,7 @@ struct vkms_config {
bool writeback;
bool cursor;
bool overlay;
+ int max_connectors;
/* only set when instantiated */
struct vkms_device *dev;
};
@@ -120,7 +122,7 @@ struct vkms_config {
struct vkms_device {
struct drm_device drm;
struct platform_device *platform;
- struct vkms_output output;
+ struct vkms_output output[NUM_MAX_CONNECTORS];
const struct vkms_config *config;
};
@@ -157,6 +159,6 @@ void vkms_composer_worker(struct work_struct *work);
void vkms_set_composer(struct vkms_output *out, bool enabled);
/* Writeback */
-int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);
+int vkms_enable_writeback_connector(struct vkms_device *vkmsdev, int index);
#endif /* _VKMS_DRV_H_ */
diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index ebb75ede65ab..c7b11d0a9753 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -50,7 +50,7 @@ static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index,
int vkms_output_init(struct vkms_device *vkmsdev, int index)
{
- struct vkms_output *output = &vkmsdev->output;
+ struct vkms_output *output = &vkmsdev->output[index];
struct drm_device *dev = &vkmsdev->drm;
struct drm_connector *connector = &output->connector;
struct drm_encoder *encoder = &output->encoder;
@@ -105,12 +105,11 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index)
}
if (vkmsdev->config->writeback) {
- writeback = vkms_enable_writeback_connector(vkmsdev);
+ writeback = vkms_enable_writeback_connector(vkmsdev, index);
if (writeback)
DRM_ERROR("Failed to init writeback connector\n");
}
- drm_mode_config_reset(dev);
return 0;
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index 84a51cd281b9..002c374f634a 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -101,17 +101,15 @@ static void vkms_wb_cleanup_job(struct drm_writeback_connector *connector,
struct drm_writeback_job *job)
{
struct vkms_writeback_job *vkmsjob = job->priv;
- struct vkms_device *vkmsdev;
-
+ struct vkms_output *output = container_of(connector, struct vkms_output,
+ wb_connector);
if (!job->fb)
return;
drm_gem_fb_vunmap(job->fb, vkmsjob->wb_frame_info.map);
drm_framebuffer_put(vkmsjob->wb_frame_info.fb);
-
- vkmsdev = drm_device_to_vkms_device(job->fb->dev);
- vkms_set_composer(&vkmsdev->output, false);
+ vkms_set_composer(output, false);
kfree(vkmsjob);
}
@@ -120,8 +118,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
{
struct drm_connector_state *connector_state = drm_atomic_get_new_connector_state(state,
conn);
- struct vkms_device *vkmsdev = drm_device_to_vkms_device(conn->dev);
- struct vkms_output *output = &vkmsdev->output;
+ struct vkms_output *output = container_of(conn, struct vkms_output, connector);
struct drm_writeback_connector *wb_conn = &output->wb_connector;
struct drm_connector_state *conn_state = wb_conn->base.state;
struct vkms_crtc_state *crtc_state = output->composer_state;
@@ -135,7 +132,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
if (!conn_state)
return;
- vkms_set_composer(&vkmsdev->output, true);
+ vkms_set_composer(output, true);
active_wb = conn_state->writeback_job->priv;
wb_frame_info = &active_wb->wb_frame_info;
@@ -147,6 +144,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
wb_frame_info->cpp = fb->format->cpp[0];
crtc_state->wb_pending = true;
spin_unlock_irq(&output->composer_lock);
+
drm_writeback_queue_job(wb_conn, connector_state);
active_wb->wb_write = get_line_to_frame_function(wb_format);
drm_rect_init(&wb_frame_info->src, 0, 0, crtc_width, crtc_height);
@@ -160,9 +158,9 @@ static const struct drm_connector_helper_funcs vkms_wb_conn_helper_funcs = {
.atomic_commit = vkms_wb_atomic_commit,
};
-int vkms_enable_writeback_connector(struct vkms_device *vkmsdev)
+int vkms_enable_writeback_connector(struct vkms_device *vkmsdev, int index)
{
- struct drm_writeback_connector *wb = &vkmsdev->output.wb_connector;
+ struct drm_writeback_connector *wb = &vkmsdev->output[index].wb_connector;
drm_connector_helper_add(&wb->base, &vkms_wb_conn_helper_funcs);
--
2.35.1
