On Sun, 19 Aug 2012 21:12:31 +0200 Daniel Vetter <[email protected]> wrote:
> And the following static functions required by it: > drm_encoder_crtc_ok, drm_crtc_helper_disable > > No changes safe for the s/drm/intel prefix change. > > Signed-Off-by: Daniel Vetter <[email protected]> > --- > drivers/gpu/drm/i915/intel_display.c | 314 > ++++++++++++++++++++++++++++++++++- > 1 file changed, 313 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_display.c > b/drivers/gpu/drm/i915/intel_display.c > index 07077b1..33a5191 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -6590,12 +6590,324 @@ static struct drm_crtc_helper_funcs > intel_helper_funcs = { > .disable = intel_crtc_disable, > }; > > +static bool intel_encoder_crtc_ok(struct drm_encoder *encoder, > + struct drm_crtc *crtc) > +{ > + struct drm_device *dev; > + struct drm_crtc *tmp; > + int crtc_mask = 1; > + > + WARN(!crtc, "checking null crtc?\n"); > + > + dev = crtc->dev; > + > + list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { > + if (tmp == crtc) > + break; > + crtc_mask <<= 1; > + } > + > + if (encoder->possible_crtcs & crtc_mask) > + return true; > + return false; > +} > + > +static int > +intel_crtc_helper_disable(struct drm_crtc *crtc) > +{ > + struct drm_device *dev = crtc->dev; > + struct drm_connector *connector; > + struct drm_encoder *encoder; > + > + /* Decouple all encoders and their attached connectors from this crtc */ > + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { > + if (encoder->crtc != crtc) > + continue; > + > + list_for_each_entry(connector, > &dev->mode_config.connector_list, head) { > + if (connector->encoder != encoder) > + continue; > + > + connector->encoder = NULL; > + } > + } > + > + drm_helper_disable_unused_functions(dev); > + return 0; > +} > + > +static int intel_crtc_set_config(struct drm_mode_set *set) > +{ > + struct drm_device *dev; > + struct drm_crtc *save_crtcs, *new_crtc, *crtc; > + struct drm_encoder *save_encoders, *new_encoder, *encoder; > + struct drm_framebuffer *old_fb = NULL; > + bool mode_changed = false; /* if true do a full mode set */ > + bool fb_changed = false; /* if true and !mode_changed just do a flip */ > + struct drm_connector *save_connectors, *connector; > + int count = 0, ro, fail = 0; > + struct drm_crtc_helper_funcs *crtc_funcs; > + struct drm_mode_set save_set; > + int ret; > + int i; > + > + DRM_DEBUG_KMS("\n"); > + > + if (!set) > + return -EINVAL; > + > + if (!set->crtc) > + return -EINVAL; > + > + if (!set->crtc->helper_private) > + return -EINVAL; > + > + crtc_funcs = set->crtc->helper_private; > + > + if (!set->mode) > + set->fb = NULL; > + > + if (set->fb) { > + DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i > %i)\n", > + set->crtc->base.id, set->fb->base.id, > + (int)set->num_connectors, set->x, set->y); > + } else { > + DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); > + return intel_crtc_helper_disable(set->crtc); > + } > + > + dev = set->crtc->dev; > + > + /* Allocate space for the backup of all (non-pointer) crtc, encoder and > + * connector data. */ > + save_crtcs = kzalloc(dev->mode_config.num_crtc * > + sizeof(struct drm_crtc), GFP_KERNEL); > + if (!save_crtcs) > + return -ENOMEM; > + > + save_encoders = kzalloc(dev->mode_config.num_encoder * > + sizeof(struct drm_encoder), GFP_KERNEL); > + if (!save_encoders) { > + kfree(save_crtcs); > + return -ENOMEM; > + } > + > + save_connectors = kzalloc(dev->mode_config.num_connector * > + sizeof(struct drm_connector), GFP_KERNEL); > + if (!save_connectors) { > + kfree(save_crtcs); > + kfree(save_encoders); > + return -ENOMEM; > + } > + > + /* Copy data. Note that driver private data is not affected. > + * Should anything bad happen only the expected state is > + * restored, not the drivers personal bookkeeping. > + */ > + count = 0; > + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { > + save_crtcs[count++] = *crtc; > + } > + > + count = 0; > + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { > + save_encoders[count++] = *encoder; > + } > + > + count = 0; > + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { > + save_connectors[count++] = *connector; > + } > + > + save_set.crtc = set->crtc; > + save_set.mode = &set->crtc->mode; > + save_set.x = set->crtc->x; > + save_set.y = set->crtc->y; > + save_set.fb = set->crtc->fb; > + > + /* We should be able to check here if the fb has the same properties > + * and then just flip_or_move it */ > + if (set->crtc->fb != set->fb) { > + /* If we have no fb then treat it as a full mode set */ > + if (set->crtc->fb == NULL) { > + DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); > + mode_changed = true; > + } else if (set->fb == NULL) { > + mode_changed = true; > + } else if (set->fb->depth != set->crtc->fb->depth) { > + mode_changed = true; > + } else if (set->fb->bits_per_pixel != > + set->crtc->fb->bits_per_pixel) { > + mode_changed = true; > + } else > + fb_changed = true; > + } > + > + if (set->x != set->crtc->x || set->y != set->crtc->y) > + fb_changed = true; > + > + if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { > + DRM_DEBUG_KMS("modes are different, full mode set\n"); > + drm_mode_debug_printmodeline(&set->crtc->mode); > + drm_mode_debug_printmodeline(set->mode); > + mode_changed = true; > + } > + > + /* a) traverse passed in connector list and get encoders for them */ > + count = 0; > + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { > + struct drm_connector_helper_funcs *connector_funcs = > + connector->helper_private; > + new_encoder = connector->encoder; > + for (ro = 0; ro < set->num_connectors; ro++) { > + if (set->connectors[ro] == connector) { > + new_encoder = > connector_funcs->best_encoder(connector); > + /* if we can't get an encoder for a connector > + we are setting now - then fail */ > + if (new_encoder == NULL) > + /* don't break so fail path works > correct */ > + fail = 1; > + break; > + } > + } > + > + if (new_encoder != connector->encoder) { > + DRM_DEBUG_KMS("encoder changed, full mode switch\n"); > + mode_changed = true; > + /* If the encoder is reused for another connector, then > + * the appropriate crtc will be set later. > + */ > + if (connector->encoder) > + connector->encoder->crtc = NULL; > + connector->encoder = new_encoder; > + } > + } > + > + if (fail) { > + ret = -EINVAL; > + goto fail; > + } > + > + count = 0; > + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { > + if (!connector->encoder) > + continue; > + > + if (connector->encoder->crtc == set->crtc) > + new_crtc = NULL; > + else > + new_crtc = connector->encoder->crtc; > + > + for (ro = 0; ro < set->num_connectors; ro++) { > + if (set->connectors[ro] == connector) > + new_crtc = set->crtc; > + } > + > + /* Make sure the new CRTC will work with the encoder */ > + if (new_crtc && > + !intel_encoder_crtc_ok(connector->encoder, new_crtc)) { > + ret = -EINVAL; > + goto fail; > + } > + if (new_crtc != connector->encoder->crtc) { > + DRM_DEBUG_KMS("crtc changed, full mode switch\n"); > + mode_changed = true; > + connector->encoder->crtc = new_crtc; > + } > + if (new_crtc) { > + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", > + connector->base.id, > drm_get_connector_name(connector), > + new_crtc->base.id); > + } else { > + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", > + connector->base.id, > drm_get_connector_name(connector)); > + } > + } > + > + /* mode_set_base is not a required function */ > + if (fb_changed && !crtc_funcs->mode_set_base) > + mode_changed = true; > + > + if (mode_changed) { > + set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); > + if (set->crtc->enabled) { > + DRM_DEBUG_KMS("attempting to set mode from" > + " userspace\n"); > + drm_mode_debug_printmodeline(set->mode); > + old_fb = set->crtc->fb; > + set->crtc->fb = set->fb; > + if (!drm_crtc_helper_set_mode(set->crtc, set->mode, > + set->x, set->y, > + old_fb)) { > + DRM_ERROR("failed to set mode on [CRTC:%d]\n", > + set->crtc->base.id); > + set->crtc->fb = old_fb; > + ret = -EINVAL; > + goto fail; > + } > + DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); > + for (i = 0; i < set->num_connectors; i++) { > + DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS > on\n", set->connectors[i]->base.id, > + > drm_get_connector_name(set->connectors[i])); > + > set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); > + } > + } > + drm_helper_disable_unused_functions(dev); > + } else if (fb_changed) { > + set->crtc->x = set->x; > + set->crtc->y = set->y; > + > + old_fb = set->crtc->fb; > + if (set->crtc->fb != set->fb) > + set->crtc->fb = set->fb; > + ret = crtc_funcs->mode_set_base(set->crtc, > + set->x, set->y, old_fb); > + if (ret != 0) { > + set->crtc->fb = old_fb; > + goto fail; > + } > + } > + > + kfree(save_connectors); > + kfree(save_encoders); > + kfree(save_crtcs); > + return 0; > + > +fail: > + /* Restore all previous data. */ > + count = 0; > + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { > + *crtc = save_crtcs[count++]; > + } > + > + count = 0; > + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { > + *encoder = save_encoders[count++]; > + } > + > + count = 0; > + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { > + *connector = save_connectors[count++]; > + } > + > + /* Try to restore the config */ > + if (mode_changed && > + !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, > + save_set.y, save_set.fb)) > + DRM_ERROR("failed to restore config after modeset failure\n"); > + > + kfree(save_connectors); > + kfree(save_encoders); > + kfree(save_crtcs); > + return ret; > +} > + > static const struct drm_crtc_funcs intel_crtc_funcs = { > .reset = intel_crtc_reset, > .cursor_set = intel_crtc_cursor_set, > .cursor_move = intel_crtc_cursor_move, > .gamma_set = intel_crtc_gamma_set, > - .set_config = drm_crtc_helper_set_config, > + .set_config = intel_crtc_set_config, > .destroy = intel_crtc_destroy, > .page_flip = intel_crtc_page_flip, > }; Acked-by: Jesse Barnes <[email protected]> (I did not check line-by-line but it looks like the right shape :). -- Jesse Barnes, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
