From a1b2278e4dfcd2dbea85e319ebf73a6b7b2f180b Mon Sep 17 00:00:00 2001 From: Chandra Konduru Date: Tue, 7 Apr 2015 15:28:45 -0700 Subject: [PATCH] drm/i915: skylake panel fitting using shared scalers Enabling skylake panel fitting feature using shared scalers v2: -added force detach parameter for pfit disable purpose (me) -read crtc scaler state from hw state (Daniel) -replaced both skylake_pfit_enable and disable with skylake_pfit_update (me) -added scaler id check to intel_pipe_config_compare (Daniel) v3: -updated function header to kerneldoc format (Matt) -dropped need_scaling checks (Matt) v4: -move clearing of scaler id from commit path to check path (Matt) -updated colorkey checks based on recent updates (me) -squashed scaler check while enabling colorkey to here (me) -use values in plane_state->src as regular integers (me) -changes made not to modify state in commit path (Matt) v5: -squashed helper function to update scaler users to here (Matt) -squashed helper function to detach scaler to here (Matt, me) -changes to align with updated scaler structures (Matt, me) Signed-off-by: Chandra Konduru Reviewed-by: Matt Roper Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 250 +++++++++++++++++++++++++++++++---- drivers/gpu/drm/i915/intel_dp.c | 8 ++ drivers/gpu/drm/i915/intel_drv.h | 4 + 3 files changed, 235 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 48129fa9360d..97922fb90824 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2931,6 +2931,35 @@ unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane, return i915_gem_obj_ggtt_offset_view(obj, view); } +/* + * This function detaches (aka. unbinds) unused scalers in hardware + */ +void skl_detach_scalers(struct intel_crtc *intel_crtc) +{ + struct drm_device *dev; + struct drm_i915_private *dev_priv; + struct intel_crtc_scaler_state *scaler_state; + int i; + + if (!intel_crtc || !intel_crtc->config) + return; + + dev = intel_crtc->base.dev; + dev_priv = dev->dev_private; + scaler_state = &intel_crtc->config->scaler_state; + + /* loop through and disable scalers that aren't in use */ + for (i = 0; i < intel_crtc->num_scalers; i++) { + if (!scaler_state->scalers[i].in_use) { + I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, i), 0); + I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, i), 0); + I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, i), 0); + DRM_DEBUG_KMS("CRTC:%d Disabled scaler id %u.%u\n", + intel_crtc->base.base.id, intel_crtc->pipe, i); + } + } +} + static void skylake_update_primary_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb, int x, int y) @@ -4280,16 +4309,175 @@ static void cpt_verify_modeset(struct drm_device *dev, int pipe) } } -static void skylake_pfit_enable(struct intel_crtc *crtc) +/** + * skl_update_scaler_users - Stages update to crtc's scaler state + * @intel_crtc: crtc + * @crtc_state: crtc_state + * @plane: plane (NULL indicates crtc is requesting update) + * @plane_state: plane's state + * @force_detach: request unconditional detachment of scaler + * + * This function updates scaler state for requested plane or crtc. + * To request scaler usage update for a plane, caller shall pass plane pointer. + * To request scaler usage update for crtc, caller shall pass plane pointer + * as NULL. + * + * Return + * 0 - scaler_usage updated successfully + * error - requested scaling cannot be supported or other error condition + */ +int +skl_update_scaler_users( + struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state, + struct intel_plane *intel_plane, struct intel_plane_state *plane_state, + int force_detach) +{ + int need_scaling; + int idx; + int src_w, src_h, dst_w, dst_h; + int *scaler_id; + struct drm_framebuffer *fb; + struct intel_crtc_scaler_state *scaler_state; + + if (!intel_crtc || !crtc_state) + return 0; + + scaler_state = &crtc_state->scaler_state; + + idx = intel_plane ? drm_plane_index(&intel_plane->base) : SKL_CRTC_INDEX; + fb = intel_plane ? plane_state->base.fb : NULL; + + if (intel_plane) { + src_w = drm_rect_width(&plane_state->src) >> 16; + src_h = drm_rect_height(&plane_state->src) >> 16; + dst_w = drm_rect_width(&plane_state->dst); + dst_h = drm_rect_height(&plane_state->dst); + scaler_id = &plane_state->scaler_id; + } else { + struct drm_display_mode *adjusted_mode = + &crtc_state->base.adjusted_mode; + src_w = crtc_state->pipe_src_w; + src_h = crtc_state->pipe_src_h; + dst_w = adjusted_mode->hdisplay; + dst_h = adjusted_mode->vdisplay; + scaler_id = &scaler_state->scaler_id; + } + need_scaling = (src_w != dst_w || src_h != dst_h); + + /* + * if plane is being disabled or scaler is no more required or force detach + * - free scaler binded to this plane/crtc + * - in order to do this, update crtc->scaler_usage + * + * Here scaler state in crtc_state is set free so that + * scaler can be assigned to other user. Actual register + * update to free the scaler is done in plane/panel-fit programming. + * For this purpose crtc/plane_state->scaler_id isn't reset here. + */ + if (force_detach || !need_scaling || (intel_plane && + (!fb || !plane_state->visible))) { + if (*scaler_id >= 0) { + scaler_state->scaler_users &= ~(1 << idx); + scaler_state->scalers[*scaler_id].in_use = 0; + + DRM_DEBUG_KMS("Staged freeing scaler id %d.%d from %s:%d " + "crtc_state = %p scaler_users = 0x%x\n", + intel_crtc->pipe, *scaler_id, intel_plane ? "PLANE" : "CRTC", + intel_plane ? intel_plane->base.base.id : + intel_crtc->base.base.id, crtc_state, + scaler_state->scaler_users); + *scaler_id = -1; + } + return 0; + } + + /* range checks */ + if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H || + dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H || + + src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H || + dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) { + DRM_DEBUG_KMS("%s:%d scaler_user index %u.%u: src %ux%u dst %ux%u " + "size is out of scaler range\n", + intel_plane ? "PLANE" : "CRTC", + intel_plane ? intel_plane->base.base.id : intel_crtc->base.base.id, + intel_crtc->pipe, idx, src_w, src_h, dst_w, dst_h); + return -EINVAL; + } + + /* check colorkey */ + if (intel_plane && intel_plane->ckey.flags != I915_SET_COLORKEY_NONE) { + DRM_DEBUG_KMS("PLANE:%d scaling with color key not allowed", + intel_plane->base.base.id); + return -EINVAL; + } + + /* Check src format */ + if (intel_plane) { + switch (fb->pixel_format) { + case DRM_FORMAT_RGB565: + case DRM_FORMAT_XBGR8888: + case DRM_FORMAT_XRGB8888: + case DRM_FORMAT_ABGR8888: + case DRM_FORMAT_ARGB8888: + case DRM_FORMAT_XRGB2101010: + case DRM_FORMAT_ARGB2101010: + case DRM_FORMAT_XBGR2101010: + case DRM_FORMAT_ABGR2101010: + case DRM_FORMAT_YUYV: + case DRM_FORMAT_YVYU: + case DRM_FORMAT_UYVY: + case DRM_FORMAT_VYUY: + break; + default: + DRM_DEBUG_KMS("PLANE:%d FB:%d unsupported scaling format 0x%x\n", + intel_plane->base.base.id, fb->base.id, fb->pixel_format); + return -EINVAL; + } + } + + /* mark this plane as a scaler user in crtc_state */ + scaler_state->scaler_users |= (1 << idx); + DRM_DEBUG_KMS("%s:%d staged scaling request for %ux%u->%ux%u " + "crtc_state = %p scaler_users = 0x%x\n", + intel_plane ? "PLANE" : "CRTC", + intel_plane ? intel_plane->base.base.id : intel_crtc->base.base.id, + src_w, src_h, dst_w, dst_h, crtc_state, scaler_state->scaler_users); + return 0; +} + +static void skylake_pfit_update(struct intel_crtc *crtc, int enable) { struct drm_device *dev = crtc->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; int pipe = crtc->pipe; + struct intel_crtc_scaler_state *scaler_state = + &crtc->config->scaler_state; + + DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config); + + /* To update pfit, first update scaler state */ + skl_update_scaler_users(crtc, crtc->config, NULL, NULL, !enable); + intel_atomic_setup_scalers(crtc->base.dev, crtc, crtc->config); + skl_detach_scalers(crtc); + if (!enable) + return; if (crtc->config->pch_pfit.enabled) { - I915_WRITE(PS_CTL(pipe), PS_ENABLE); - I915_WRITE(PS_WIN_POS(pipe), crtc->config->pch_pfit.pos); - I915_WRITE(PS_WIN_SZ(pipe), crtc->config->pch_pfit.size); + int id; + + if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) { + DRM_ERROR("Requesting pfit without getting a scaler first\n"); + return; + } + + id = scaler_state->scaler_id; + I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN | + PS_FILTER_MEDIUM | scaler_state->scalers[id].mode); + I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos); + I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size); + + DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id); } } @@ -4694,7 +4882,7 @@ static void haswell_crtc_enable(struct drm_crtc *crtc) intel_ddi_enable_pipe_clock(intel_crtc); if (IS_SKYLAKE(dev)) - skylake_pfit_enable(intel_crtc); + skylake_pfit_update(intel_crtc, 1); else ironlake_pfit_enable(intel_crtc); @@ -4730,21 +4918,6 @@ static void haswell_crtc_enable(struct drm_crtc *crtc) intel_crtc_enable_planes(crtc); } -static void skylake_pfit_disable(struct intel_crtc *crtc) -{ - struct drm_device *dev = crtc->base.dev; - struct drm_i915_private *dev_priv = dev->dev_private; - int pipe = crtc->pipe; - - /* To avoid upsetting the power well on haswell only disable the pfit if - * it's in use. The hw state code will make sure we get this right. */ - if (crtc->config->pch_pfit.enabled) { - I915_WRITE(PS_CTL(pipe), 0); - I915_WRITE(PS_WIN_POS(pipe), 0); - I915_WRITE(PS_WIN_SZ(pipe), 0); - } -} - static void ironlake_pfit_disable(struct intel_crtc *crtc) { struct drm_device *dev = crtc->base.dev; @@ -4857,7 +5030,7 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder); if (IS_SKYLAKE(dev)) - skylake_pfit_disable(intel_crtc); + skylake_pfit_update(intel_crtc, 0); else ironlake_pfit_disable(intel_crtc); @@ -8146,14 +8319,28 @@ static void skylake_get_pfit_config(struct intel_crtc *crtc, { struct drm_device *dev = crtc->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - uint32_t tmp; + struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state; + uint32_t ps_ctrl = 0; + int id = -1; + int i; - tmp = I915_READ(PS_CTL(crtc->pipe)); + /* find scaler attached to this pipe */ + for (i = 0; i < crtc->num_scalers; i++) { + ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i)); + if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) { + id = i; + pipe_config->pch_pfit.enabled = true; + pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i)); + pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i)); + break; + } + } - if (tmp & PS_ENABLE) { - pipe_config->pch_pfit.enabled = true; - pipe_config->pch_pfit.pos = I915_READ(PS_WIN_POS(crtc->pipe)); - pipe_config->pch_pfit.size = I915_READ(PS_WIN_SZ(crtc->pipe)); + scaler_state->scaler_id = id; + if (id >= 0) { + scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX); + } else { + scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX); } } @@ -8787,12 +8974,19 @@ static bool haswell_get_pipe_config(struct intel_crtc *crtc, intel_get_pipe_timings(crtc, pipe_config); + if (INTEL_INFO(dev)->gen >= 9) { + skl_init_scalers(dev, crtc, pipe_config); + } + pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe); if (intel_display_power_is_enabled(dev_priv, pfit_domain)) { if (IS_SKYLAKE(dev)) skylake_get_pfit_config(crtc, pipe_config); else ironlake_get_pfit_config(crtc, pipe_config); + } else { + pipe_config->scaler_state.scaler_id = -1; + pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX); } if (IS_HASWELL(dev)) @@ -11320,6 +11514,8 @@ intel_pipe_config_compare(struct drm_device *dev, PIPE_CONF_CHECK_I(pch_pfit.size); } + PIPE_CONF_CHECK_I(scaler_state.scaler_id); + /* BDW+ don't expose a synchronous way to read the state */ if (IS_HASWELL(dev)) PIPE_CONF_CHECK_I(ips_enabled); diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 589cd92d5c30..3ea68e164873 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1351,6 +1351,14 @@ intel_dp_compute_config(struct intel_encoder *encoder, if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { intel_fixed_panel_mode(intel_connector->panel.fixed_mode, adjusted_mode); + + if (INTEL_INFO(dev)->gen >= 9) { + int ret; + ret = skl_update_scaler_users(intel_crtc, pipe_config, NULL, NULL, 0); + if (ret) + return ret; + } + if (!HAS_PCH_SPLIT(dev)) intel_gmch_panel_fitting(intel_crtc, pipe_config, intel_connector->panel.fitting_mode); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 885e48295778..6a2ee0c38161 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1128,6 +1128,10 @@ void intel_mode_from_pipe_config(struct drm_display_mode *mode, struct intel_crtc_state *pipe_config); void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc); void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file); +void skl_detach_scalers(struct intel_crtc *intel_crtc); +int skl_update_scaler_users(struct intel_crtc *intel_crtc, + struct intel_crtc_state *crtc_state, struct intel_plane *intel_plane, + struct intel_plane_state *plane_state, int force_detach); unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane, struct drm_i915_gem_object *obj); -- 2.11.0