[Intel-gfx] [PATCH 2/3] drm/i915: Use atomic helpers for suspend.
Maarten Lankhorst
maarten.lankhorst at linux.intel.com
Tue Feb 9 12:52:22 UTC 2016
Instead of duplicating the functionality now that we no longer need
to preserve dpll state we can move to using the upstream suspend helper.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
drivers/gpu/drm/drm_atomic_helper.c | 3 +
drivers/gpu/drm/i915/i915_drv.c | 8 ---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_display.c | 117 ++++++++++++-----------------------
4 files changed, 42 insertions(+), 87 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 2b430b05f35d..a2d3b094f27c 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2102,6 +2102,9 @@ int drm_atomic_helper_resume(struct drm_device *dev,
err = drm_atomic_commit(state);
drm_modeset_unlock_all(dev);
+ if (err)
+ drm_atomic_state_free(state);
+
return err;
}
EXPORT_SYMBOL(drm_atomic_helper_resume);
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 11d8414edbbe..fc9b552bfcd1 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -600,13 +600,7 @@ static int i915_drm_suspend(struct drm_device *dev)
intel_suspend_gt_powersave(dev);
- /*
- * Disable CRTCs directly since we want to preserve sw state
- * for _thaw. Also, power gate the CRTC power wells.
- */
- drm_modeset_lock_all(dev);
intel_display_suspend(dev);
- drm_modeset_unlock_all(dev);
intel_dp_mst_suspend(dev);
@@ -761,9 +755,7 @@ static int i915_drm_resume(struct drm_device *dev)
dev_priv->display.hpd_irq_setup(dev);
spin_unlock_irq(&dev_priv->irq_lock);
- drm_modeset_lock_all(dev);
intel_display_resume(dev);
- drm_modeset_unlock_all(dev);
intel_dp_mst_resume(dev);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8216665405eb..ef289514b97e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1848,6 +1848,7 @@ struct drm_i915_private {
enum modeset_restore modeset_restore;
struct mutex modeset_restore_lock;
+ struct drm_atomic_state *modeset_restore_state;
struct list_head vm_list; /* Global list of all address spaces */
struct i915_gtt gtt; /* VM representing the global address space */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e496c130364d..4c91fd1c5222 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6393,58 +6393,19 @@ static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
*/
int intel_display_suspend(struct drm_device *dev)
{
- struct drm_mode_config *config = &dev->mode_config;
- struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
- struct drm_atomic_state *state;
- struct drm_crtc *crtc;
- unsigned crtc_mask = 0;
- int ret = 0;
-
- if (WARN_ON(!ctx))
- return 0;
-
- lockdep_assert_held(&ctx->ww_ctx);
- state = drm_atomic_state_alloc(dev);
- if (WARN_ON(!state))
- return -ENOMEM;
-
- state->acquire_ctx = ctx;
- state->allow_modeset = true;
-
- for_each_crtc(dev, crtc) {
- struct drm_crtc_state *crtc_state =
- drm_atomic_get_crtc_state(state, crtc);
-
- ret = PTR_ERR_OR_ZERO(crtc_state);
- if (ret)
- goto free;
-
- if (!crtc_state->active)
- continue;
-
- crtc_state->active = false;
- crtc_mask |= 1 << drm_crtc_index(crtc);
- }
-
- if (crtc_mask) {
- ret = drm_atomic_commit(state);
-
- if (!ret) {
- for_each_crtc(dev, crtc)
- if (crtc_mask & (1 << drm_crtc_index(crtc)))
- crtc->state->active = true;
-
- return ret;
- }
- }
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ int ret;
-free:
- if (ret)
+ dev_priv->modeset_restore_state = drm_atomic_helper_suspend(dev);
+ ret = PTR_ERR_OR_ZERO(dev_priv->modeset_restore_state);
+ if (ret) {
DRM_ERROR("Suspending crtc's failed with %i\n", ret);
- drm_atomic_state_free(state);
+ dev_priv->modeset_restore_state = NULL;
+ }
return ret;
}
+
void intel_encoder_destroy(struct drm_encoder *encoder)
{
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
@@ -15909,51 +15870,49 @@ intel_modeset_setup_hw_state(struct drm_device *dev)
void intel_display_resume(struct drm_device *dev)
{
- struct drm_atomic_state *state = drm_atomic_state_alloc(dev);
- struct intel_connector *conn;
- struct intel_plane *plane;
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct drm_atomic_state *state = dev_priv->modeset_restore_state;
+ struct drm_modeset_acquire_ctx ctx;
struct drm_crtc *crtc;
- int ret;
+ struct drm_crtc_state *crtc_state;
+ int ret, i;
+
+ intel_modeset_setup_hw_state(dev);
+ i915_redisable_vga(dev);
+ dev_priv->modeset_restore_state = NULL;
if (!state)
return;
- state->acquire_ctx = dev->mode_config.acquire_ctx;
-
- for_each_crtc(dev, crtc) {
- struct drm_crtc_state *crtc_state =
- drm_atomic_get_crtc_state(state, crtc);
-
- ret = PTR_ERR_OR_ZERO(crtc_state);
- if (ret)
- goto err;
+ drm_modeset_acquire_init(&ctx, 0);
+ state->acquire_ctx = &ctx;
- /* force a restore */
+ for_each_crtc_in_state(state, crtc, crtc_state, i) {
+ /*
+ * Force recalculation even if we restore
+ * current state. With fast modeset this may not result
+ * in a modeset when the state is compatible.
+ */
crtc_state->mode_changed = true;
}
- for_each_intel_plane(dev, plane) {
- ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(state, &plane->base));
- if (ret)
- goto err;
- }
+retry:
+ ret = drm_modeset_lock_all_ctx(dev, &ctx);
+ if (ret == 0)
+ ret = drm_atomic_commit(state);
- for_each_intel_connector(dev, conn) {
- ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(state, &conn->base));
- if (ret)
- goto err;
+ if (ret == -EDEADLK) {
+ drm_modeset_backoff(&ctx);
+ goto retry;
}
- intel_modeset_setup_hw_state(dev);
-
- i915_redisable_vga(dev);
- ret = drm_atomic_commit(state);
- if (!ret)
- return;
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
-err:
- DRM_ERROR("Restoring old state failed with %i\n", ret);
- drm_atomic_state_free(state);
+ if (ret) {
+ DRM_ERROR("Restoring old state failed with %i\n", ret);
+ drm_atomic_state_free(state);
+ }
}
void intel_modeset_gem_init(struct drm_device *dev)
--
2.1.0
More information about the Intel-gfx
mailing list