[Intel-gfx] [RFC v4 09/25] drm/fb-helper: Move modeset commit code to drm_client
Noralf Trønnes
noralf at tronnes.org
Fri Apr 13 16:53:38 UTC 2018
This moves the committing part of the modesetting code to drm_client.
Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
---
drivers/gpu/drm/drm_client.c | 242 ++++++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_fb_helper.c | 216 +----------------------------------
include/drm/drm_client.h | 8 ++
3 files changed, 252 insertions(+), 214 deletions(-)
diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c
index 7c31a6efb2f4..c85c13568cf9 100644
--- a/drivers/gpu/drm/drm_client.c
+++ b/drivers/gpu/drm/drm_client.c
@@ -10,6 +10,8 @@
#include <linux/slab.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
#include <drm/drm_client.h>
#include <drm/drm_connector.h>
#include <drm/drm_crtc.h>
@@ -117,3 +119,243 @@ drm_client_display_find_modeset(struct drm_client_display *display, struct drm_c
return NULL;
}
EXPORT_SYMBOL(drm_client_display_find_modeset);
+
+/**
+ * drm_client_display_panel_rotation() - Check panel orientation
+ * @connector: DRM connector
+ * @plane: DRM plane
+ * @rotation: Returned rotation value
+ *
+ * This function checks if @plane can hw rotate to match the panel orientation
+ * on @connector.
+ *
+ * Return:
+ * True if the plane can do the rotation, false otherwise.
+ */
+bool drm_client_display_panel_rotation(struct drm_connector *connector,
+ struct drm_plane *plane,
+ unsigned int *rotation)
+{
+ uint64_t valid_mask = 0;
+ unsigned int i;
+
+ if (!connector)
+ return false;
+
+ switch (connector->display_info.panel_orientation) {
+ case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP:
+ *rotation = DRM_MODE_ROTATE_180;
+ break;
+ case DRM_MODE_PANEL_ORIENTATION_LEFT_UP:
+ *rotation = DRM_MODE_ROTATE_90;
+ break;
+ case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP:
+ *rotation = DRM_MODE_ROTATE_270;
+ break;
+ default:
+ *rotation = DRM_MODE_ROTATE_0;
+ }
+
+ /*
+ * TODO: support 90 / 270 degree hardware rotation,
+ * depending on the hardware this may require the framebuffer
+ * to be in a specific tiling format.
+ */
+ if (*rotation != DRM_MODE_ROTATE_180 || !plane->rotation_property)
+ return false;
+
+ for (i = 0; i < plane->rotation_property->num_values; i++)
+ valid_mask |= (1ULL << plane->rotation_property->values[i]);
+
+ if (!(*rotation & valid_mask))
+ return false;
+
+ return true;
+}
+EXPORT_SYMBOL(drm_client_display_panel_rotation);
+
+static int drm_client_display_restore_atomic(struct drm_client_display *display, bool active)
+{
+ struct drm_device *dev = display->dev;
+ struct drm_plane_state *plane_state;
+ struct drm_mode_set *mode_set;
+ struct drm_plane *plane;
+ struct drm_atomic_state *state;
+ int ret;
+ unsigned int plane_mask;
+ struct drm_modeset_acquire_ctx ctx;
+
+ drm_modeset_acquire_init(&ctx, 0);
+
+ state = drm_atomic_state_alloc(dev);
+ if (!state) {
+ ret = -ENOMEM;
+ goto out_ctx;
+ }
+
+ state->acquire_ctx = &ctx;
+retry:
+ plane_mask = 0;
+ drm_for_each_plane(plane, dev) {
+ plane_state = drm_atomic_get_plane_state(state, plane);
+ if (IS_ERR(plane_state)) {
+ ret = PTR_ERR(plane_state);
+ goto out_state;
+ }
+
+ plane_state->rotation = DRM_MODE_ROTATE_0;
+
+ plane->old_fb = plane->fb;
+ plane_mask |= 1 << drm_plane_index(plane);
+
+ /* disable non-primary: */
+ if (plane->type == DRM_PLANE_TYPE_PRIMARY)
+ continue;
+
+ ret = drm_atomic_disable_plane(plane, plane_state);
+ if (ret != 0)
+ goto out_state;
+ }
+
+ drm_client_display_for_each_modeset(mode_set, display) {
+ struct drm_plane *primary = mode_set->crtc->primary;
+ unsigned int rotation;
+
+ if (drm_client_display_panel_rotation(mode_set->connectors[0], primary, &rotation)) {
+ /* Cannot fail as we've already gotten the plane state above */
+ plane_state = drm_atomic_get_new_plane_state(state, primary);
+ plane_state->rotation = rotation;
+ }
+
+ ret = drm_atomic_set_config(mode_set, state);
+ if (ret != 0)
+ goto out_state;
+
+ /*
+ * drm_atomic_set_config() sets active when a
+ * mode is set, unconditionally clear it if we force DPMS off
+ */
+ if (!active) {
+ struct drm_crtc *crtc = mode_set->crtc;
+ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+
+ crtc_state->active = false;
+ }
+ }
+
+ ret = drm_atomic_commit(state);
+
+out_state:
+ drm_atomic_clean_old_fb(dev, plane_mask, ret);
+
+ if (ret == -EDEADLK)
+ goto backoff;
+
+ drm_atomic_state_put(state);
+out_ctx:
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+
+ return ret;
+
+backoff:
+ drm_atomic_state_clear(state);
+ drm_modeset_backoff(&ctx);
+
+ goto retry;
+}
+
+static int drm_client_display_restore_legacy(struct drm_client_display *display)
+{
+ struct drm_device *dev = display->dev;
+ struct drm_mode_set *mode_set;
+ struct drm_plane *plane;
+ int ret = 0;
+
+ drm_modeset_lock_all(dev);
+ drm_for_each_plane(plane, dev) {
+ if (plane->type != DRM_PLANE_TYPE_PRIMARY)
+ drm_plane_force_disable(plane);
+
+ if (plane->rotation_property)
+ drm_mode_plane_set_obj_prop(plane,
+ plane->rotation_property,
+ DRM_MODE_ROTATE_0);
+ }
+
+ drm_client_display_for_each_modeset(mode_set, display) {
+ struct drm_crtc *crtc = mode_set->crtc;
+
+ if (crtc->funcs->cursor_set2) {
+ ret = crtc->funcs->cursor_set2(crtc, NULL, 0, 0, 0, 0, 0);
+ if (ret)
+ goto out;
+ } else if (crtc->funcs->cursor_set) {
+ ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0);
+ if (ret)
+ goto out;
+ }
+
+ ret = drm_mode_set_config_internal(mode_set);
+ if (ret)
+ goto out;
+ }
+out:
+ drm_modeset_unlock_all(dev);
+
+ return ret;
+}
+
+/**
+ * drm_client_display_restore() - Restore client display
+ * @display: Client display
+ *
+ * Restore client display using the current modeset configuration.
+ *
+ * Return:
+ * Zero on succes or negative error code on failure.
+ */
+int drm_client_display_restore(struct drm_client_display *display)
+{
+ if (drm_drv_uses_atomic_modeset(display->dev))
+ return drm_client_display_restore_atomic(display, true);
+ else
+ return drm_client_display_restore_legacy(display);
+}
+EXPORT_SYMBOL(drm_client_display_restore);
+
+static void drm_client_display_dpms_legacy(struct drm_client_display *display, int dpms_mode)
+{
+ struct drm_device *dev = display->dev;
+ struct drm_connector *connector;
+ struct drm_mode_set *modeset;
+ int i;
+
+ drm_modeset_lock_all(dev);
+ drm_client_display_for_each_modeset(modeset, display) {
+ if (!modeset->crtc->enabled)
+ continue;
+
+ for (i = 0; i < modeset->num_connectors; i++) {
+ connector = modeset->connectors[i];
+ connector->funcs->dpms(connector, dpms_mode);
+ drm_object_property_set_value(&connector->base,
+ dev->mode_config.dpms_property, dpms_mode);
+ }
+ }
+ drm_modeset_unlock_all(dev);
+}
+
+/**
+ * drm_client_display_dpms() - Set display DPMS mode
+ * @display: Client display
+ * @mode: DPMS mode
+ */
+void drm_client_display_dpms(struct drm_client_display *display, int mode)
+{
+ if (drm_drv_uses_atomic_modeset(display->dev))
+ drm_client_display_restore_atomic(display, mode == DRM_MODE_DPMS_ON);
+ else
+ drm_client_display_dpms_legacy(display, mode);
+}
+EXPORT_SYMBOL(drm_client_display_dpms);
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index bdb4b57d2c12..785a2f5d2647 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -280,188 +280,6 @@ int drm_fb_helper_debug_leave(struct fb_info *info)
}
EXPORT_SYMBOL(drm_fb_helper_debug_leave);
-/* Check if the plane can hw rotate to match panel orientation */
-static bool drm_fb_helper_panel_rotation(struct drm_connector *connector,
- struct drm_plane *plane,
- unsigned int *rotation)
-{
- uint64_t valid_mask = 0;
- unsigned int i;
-
- if (!connector)
- return false;
-
- switch (connector->display_info.panel_orientation) {
- case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP:
- *rotation = DRM_MODE_ROTATE_180;
- break;
- case DRM_MODE_PANEL_ORIENTATION_LEFT_UP:
- *rotation = DRM_MODE_ROTATE_90;
- break;
- case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP:
- *rotation = DRM_MODE_ROTATE_270;
- break;
- default:
- *rotation = DRM_MODE_ROTATE_0;
- }
-
- /*
- * TODO: support 90 / 270 degree hardware rotation,
- * depending on the hardware this may require the framebuffer
- * to be in a specific tiling format.
- */
- if (*rotation != DRM_MODE_ROTATE_180 || !plane->rotation_property)
- return false;
-
- for (i = 0; i < plane->rotation_property->num_values; i++)
- valid_mask |= (1ULL << plane->rotation_property->values[i]);
-
- if (!(*rotation & valid_mask))
- return false;
-
- return true;
-}
-
-static int drm_client_display_restore_atomic(struct drm_client_display *display, bool active)
-{
- struct drm_device *dev = display->dev;
- struct drm_plane_state *plane_state;
- struct drm_mode_set *mode_set;
- struct drm_plane *plane;
- struct drm_atomic_state *state;
- int ret;
- unsigned int plane_mask;
- struct drm_modeset_acquire_ctx ctx;
-
- drm_modeset_acquire_init(&ctx, 0);
-
- state = drm_atomic_state_alloc(dev);
- if (!state) {
- ret = -ENOMEM;
- goto out_ctx;
- }
-
- state->acquire_ctx = &ctx;
-retry:
- plane_mask = 0;
- drm_for_each_plane(plane, dev) {
- plane_state = drm_atomic_get_plane_state(state, plane);
- if (IS_ERR(plane_state)) {
- ret = PTR_ERR(plane_state);
- goto out_state;
- }
-
- plane_state->rotation = DRM_MODE_ROTATE_0;
-
- plane->old_fb = plane->fb;
- plane_mask |= 1 << drm_plane_index(plane);
-
- /* disable non-primary: */
- if (plane->type == DRM_PLANE_TYPE_PRIMARY)
- continue;
-
- ret = drm_atomic_disable_plane(plane, plane_state);
- if (ret != 0)
- goto out_state;
- }
-
- drm_client_display_for_each_modeset(mode_set, display) {
- struct drm_plane *primary = mode_set->crtc->primary;
- unsigned int rotation;
-
- if (drm_fb_helper_panel_rotation(mode_set->connectors[0], primary, &rotation)) {
- /* Cannot fail as we've already gotten the plane state above */
- plane_state = drm_atomic_get_new_plane_state(state, primary);
- plane_state->rotation = rotation;
- }
-
- ret = drm_atomic_set_config(mode_set, state);
- if (ret != 0)
- goto out_state;
-
- /*
- * drm_atomic_set_config() sets active when a mode is set,
- * unconditionally clear it if we force DPMS off
- */
- if (!active) {
- struct drm_crtc *crtc = mode_set->crtc;
- struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
-
- crtc_state->active = false;
- }
- }
-
- ret = drm_atomic_commit(state);
-
-out_state:
- drm_atomic_clean_old_fb(dev, plane_mask, ret);
-
- if (ret == -EDEADLK)
- goto backoff;
-
- drm_atomic_state_put(state);
-out_ctx:
- drm_modeset_drop_locks(&ctx);
- drm_modeset_acquire_fini(&ctx);
-
- return ret;
-
-backoff:
- drm_atomic_state_clear(state);
- drm_modeset_backoff(&ctx);
-
- goto retry;
-}
-
-static int drm_client_display_restore_legacy(struct drm_client_display *display)
-{
- struct drm_device *dev = display->dev;
- struct drm_mode_set *mode_set;
- struct drm_plane *plane;
- int ret = 0;
-
- drm_modeset_lock_all(dev);
- drm_for_each_plane(plane, dev) {
- if (plane->type != DRM_PLANE_TYPE_PRIMARY)
- drm_plane_force_disable(plane);
-
- if (plane->rotation_property)
- drm_mode_plane_set_obj_prop(plane,
- plane->rotation_property,
- DRM_MODE_ROTATE_0);
- }
-
- drm_client_display_for_each_modeset(mode_set, display) {
- struct drm_crtc *crtc = mode_set->crtc;
-
- if (crtc->funcs->cursor_set2) {
- ret = crtc->funcs->cursor_set2(crtc, NULL, 0, 0, 0, 0, 0);
- if (ret)
- goto out;
- } else if (crtc->funcs->cursor_set) {
- ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0);
- if (ret)
- goto out;
- }
-
- ret = drm_mode_set_config_internal(mode_set);
- if (ret)
- goto out;
- }
-out:
- drm_modeset_unlock_all(dev);
-
- return ret;
-}
-
-static int drm_client_display_restore(struct drm_client_display *display)
-{
- if (drm_drv_uses_atomic_modeset(display->dev))
- return drm_client_display_restore_atomic(display, true);
- else
- return drm_client_display_restore_legacy(display);
-}
-
/**
* drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration
* @fb_helper: driver-allocated fbdev helper, can be NULL
@@ -579,36 +397,6 @@ static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = {
static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { };
#endif
-static void drm_client_display_dpms_legacy(struct drm_client_display *display, int dpms_mode)
-{
- struct drm_device *dev = display->dev;
- struct drm_connector *connector;
- struct drm_mode_set *modeset;
- int i;
-
- drm_modeset_lock_all(dev);
- drm_client_display_for_each_modeset(modeset, display) {
- if (!modeset->crtc->enabled)
- continue;
-
- for (i = 0; i < modeset->num_connectors; i++) {
- connector = modeset->connectors[i];
- connector->funcs->dpms(connector, dpms_mode);
- drm_object_property_set_value(&connector->base,
- dev->mode_config.dpms_property, dpms_mode);
- }
- }
- drm_modeset_unlock_all(dev);
-}
-
-static void drm_client_display_dpms(struct drm_client_display *display, int mode)
-{
- if (drm_drv_uses_atomic_modeset(display->dev))
- drm_client_display_restore_atomic(display, mode == DRM_MODE_DPMS_ON);
- else
- drm_client_display_dpms_legacy(display, mode);
-}
-
static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode)
{
struct drm_fb_helper *fb_helper = info->par;
@@ -2487,8 +2275,8 @@ static void drm_setup_crtcs_fb(struct drm_fb_helper *fb_helper)
modeset->fb = fb_helper->fb;
- if (drm_fb_helper_panel_rotation(modeset->connectors[0],
- modeset->crtc->primary, &rotation))
+ if (drm_client_display_panel_rotation(modeset->connectors[0],
+ modeset->crtc->primary, &rotation))
/* Rotating in hardware, fbcon should not rotate */
sw_rotations |= DRM_MODE_ROTATE_0;
else
diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h
index b6a057802769..ed028f5877d0 100644
--- a/include/drm/drm_client.h
+++ b/include/drm/drm_client.h
@@ -3,9 +3,11 @@
#ifndef _DRM_CLIENT_H_
#define _DRM_CLIENT_H_
+struct drm_connector;
struct drm_crtc;
struct drm_device;
struct drm_mode_set;
+struct drm_plane;
/**
* struct drm_client_display - DRM client display
@@ -41,4 +43,10 @@ drm_client_display_find_modeset(struct drm_client_display *display, struct drm_c
#define drm_client_display_for_each_modeset(modeset, display) \
for (modeset = display->modesets; modeset->crtc; modeset++)
+bool drm_client_display_panel_rotation(struct drm_connector *connector,
+ struct drm_plane *plane,
+ unsigned int *rotation);
+int drm_client_display_restore(struct drm_client_display *display);
+void drm_client_display_dpms(struct drm_client_display *display, int mode);
+
#endif
--
2.15.1
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