/* * Copyright (c) 2014, The Linux Foundation. All rights reserved. * Copyright (C) 2013 Red Hat * Author: Rob Clark * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see . */ #include #include "msm_drv.h" #include "msm_gem.h" #include "msm_mmu.h" #include "mdp5_kms.h" static const char *iommu_ports[] = { "mdp_0", }; static int mdp5_hw_init(struct msm_kms *kms) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); struct device *dev = &mdp5_kms->pdev->dev; unsigned long flags; pm_runtime_get_sync(dev); /* Magic unknown register writes: * * W VBIF:0x004 00000001 (mdss_mdp.c:839) * W MDP5:0x2e0 0xe9 (mdss_mdp.c:839) * W MDP5:0x2e4 0x55 (mdss_mdp.c:839) * W MDP5:0x3ac 0xc0000ccc (mdss_mdp.c:839) * W MDP5:0x3b4 0xc0000ccc (mdss_mdp.c:839) * W MDP5:0x3bc 0xcccccc (mdss_mdp.c:839) * W MDP5:0x4a8 0xcccc0c0 (mdss_mdp.c:839) * W MDP5:0x4b0 0xccccc0c0 (mdss_mdp.c:839) * W MDP5:0x4b8 0xccccc000 (mdss_mdp.c:839) * * Downstream fbdev driver gets these register offsets/values * from DT.. not really sure what these registers are or if * different values for different boards/SoC's, etc. I guess * they are the golden registers. * * Not setting these does not seem to cause any problem. But * we may be getting lucky with the bootloader initializing * them for us. OTOH, if we can always count on the bootloader * setting the golden registers, then perhaps we don't need to * care. */ spin_lock_irqsave(&mdp5_kms->resource_lock, flags); mdp5_write(mdp5_kms, REG_MDP5_DISP_INTF_SEL, 0); spin_unlock_irqrestore(&mdp5_kms->resource_lock, flags); mdp5_ctlm_hw_reset(mdp5_kms->ctlm); pm_runtime_put_sync(dev); return 0; } /* Global/shared object state funcs */ /* * This is a helper that returns the private state currently in operation. * Note that this would return the "old_state" if called in the atomic check * path, and the "new_state" after the atomic swap has been done. */ struct mdp5_global_state * mdp5_get_existing_global_state(struct mdp5_kms *mdp5_kms) { return to_mdp5_global_state(mdp5_kms->glob_state.state); } /* * This acquires the modeset lock set aside for global state, creates * a new duplicated private object state. */ struct mdp5_global_state *mdp5_get_global_state(struct drm_atomic_state *s) { struct msm_drm_private *priv = s->dev->dev_private; struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(priv->kms)); struct drm_private_state *priv_state; int ret; ret = drm_modeset_lock(&mdp5_kms->glob_state_lock, s->acquire_ctx); if (ret) return ERR_PTR(ret); priv_state = drm_atomic_get_private_obj_state(s, &mdp5_kms->glob_state); if (IS_ERR(priv_state)) return ERR_CAST(priv_state); return to_mdp5_global_state(priv_state); } static struct drm_private_state * mdp5_global_duplicate_state(struct drm_private_obj *obj) { struct mdp5_global_state *state; state = kmemdup(obj->state, sizeof(*state), GFP_KERNEL); if (!state) return NULL; __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base); return &state->base; } static void mdp5_global_destroy_state(struct drm_private_obj *obj, struct drm_private_state *state) { struct mdp5_global_state *mdp5_state = to_mdp5_global_state(state); kfree(mdp5_state); } static const struct drm_private_state_funcs mdp5_global_state_funcs = { .atomic_duplicate_state = mdp5_global_duplicate_state, .atomic_destroy_state = mdp5_global_destroy_state, }; static int mdp5_global_obj_init(struct mdp5_kms *mdp5_kms) { struct mdp5_global_state *state; drm_modeset_lock_init(&mdp5_kms->glob_state_lock); state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) return -ENOMEM; state->mdp5_kms = mdp5_kms; drm_atomic_private_obj_init(&mdp5_kms->glob_state, &state->base, &mdp5_global_state_funcs); return 0; } static void mdp5_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); struct device *dev = &mdp5_kms->pdev->dev; struct mdp5_global_state *global_state; global_state = mdp5_get_existing_global_state(mdp5_kms); pm_runtime_get_sync(dev); if (mdp5_kms->smp) mdp5_smp_prepare_commit(mdp5_kms->smp, &global_state->smp); } static void mdp5_complete_commit(struct msm_kms *kms, struct drm_atomic_state *state) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); struct device *dev = &mdp5_kms->pdev->dev; struct mdp5_global_state *global_state; drm_atomic_helper_wait_for_vblanks(mdp5_kms->dev, state); global_state = mdp5_get_existing_global_state(mdp5_kms); if (mdp5_kms->smp) mdp5_smp_complete_commit(mdp5_kms->smp, &global_state->smp); pm_runtime_put_sync(dev); } static void mdp5_wait_for_crtc_commit_done(struct msm_kms *kms, struct drm_crtc *crtc) { mdp5_crtc_wait_for_commit_done(crtc); } static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate, struct drm_encoder *encoder) { return rate; } static int mdp5_set_split_display(struct msm_kms *kms, struct drm_encoder *encoder, struct drm_encoder *slave_encoder, bool is_cmd_mode) { if (is_cmd_mode) return mdp5_cmd_encoder_set_split_display(encoder, slave_encoder); else return mdp5_vid_encoder_set_split_display(encoder, slave_encoder); } static void mdp5_set_encoder_mode(struct msm_kms *kms, struct drm_encoder *encoder, bool cmd_mode) { mdp5_encoder_set_intf_mode(encoder, cmd_mode); } static void mdp5_kms_destroy(struct msm_kms *kms) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); struct msm_gem_address_space *aspace = kms->aspace; int i; for (i = 0; i < mdp5_kms->num_hwmixers; i++) mdp5_mixer_destroy(mdp5_kms->hwmixers[i]); for (i = 0; i < mdp5_kms->num_hwpipes; i++) mdp5_pipe_destroy(mdp5_kms->hwpipes[i]); if (aspace) { aspace->mmu->funcs->detach(aspace->mmu, iommu_ports, ARRAY_SIZE(iommu_ports)); msm_gem_address_space_put(aspace); } } #ifdef CONFIG_DEBUG_FS static int smp_show(struct seq_file *m, void *arg) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; struct msm_drm_private *priv = dev->dev_private; struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(priv->kms)); struct drm_printer p = drm_seq_file_printer(m); if (!mdp5_kms->smp) { drm_printf(&p, "no SMP pool\n"); return 0; } mdp5_smp_dump(mdp5_kms->smp, &p); return 0; } static struct drm_info_list mdp5_debugfs_list[] = { {"smp", smp_show }, }; static int mdp5_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor) { struct drm_device *dev = minor->dev; int ret; ret = drm_debugfs_create_files(mdp5_debugfs_list, ARRAY_SIZE(mdp5_debugfs_list), minor->debugfs_root, minor); if (ret) { dev_err(dev->dev, "could not install mdp5_debugfs_list\n"); return ret; } return 0; } #endif static const struct mdp_kms_funcs kms_funcs = { .base = { .hw_init = mdp5_hw_init, .irq_preinstall = mdp5_irq_preinstall, .irq_postinstall = mdp5_irq_postinstall, .irq_uninstall = mdp5_irq_uninstall, .irq = mdp5_irq, .enable_vblank = mdp5_enable_vblank, .disable_vblank = mdp5_disable_vblank, .prepare_commit = mdp5_prepare_commit, .complete_commit = mdp5_complete_commit, .wait_for_crtc_commit_done = mdp5_wait_for_crtc_commit_done, .get_format = mdp_get_format, .round_pixclk = mdp5_round_pixclk, .set_split_display = mdp5_set_split_display, .set_encoder_mode = mdp5_set_encoder_mode, .destroy = mdp5_kms_destroy, #ifdef CONFIG_DEBUG_FS .debugfs_init = mdp5_kms_debugfs_init, #endif }, .set_irqmask = mdp5_set_irqmask, }; int mdp5_disable(struct mdp5_kms *mdp5_kms) { DBG(""); mdp5_kms->enable_count--; WARN_ON(mdp5_kms->enable_count < 0); clk_disable_unprepare(mdp5_kms->ahb_clk); clk_disable_unprepare(mdp5_kms->axi_clk); clk_disable_unprepare(mdp5_kms->core_clk); if (mdp5_kms->lut_clk) clk_disable_unprepare(mdp5_kms->lut_clk); return 0; } int mdp5_enable(struct mdp5_kms *mdp5_kms) { DBG(""); mdp5_kms->enable_count++; clk_prepare_enable(mdp5_kms->ahb_clk); clk_prepare_enable(mdp5_kms->axi_clk); clk_prepare_enable(mdp5_kms->core_clk); if (mdp5_kms->lut_clk) clk_prepare_enable(mdp5_kms->lut_clk); return 0; } static struct drm_encoder *construct_encoder(struct mdp5_kms *mdp5_kms, struct mdp5_interface *intf, struct mdp5_ctl *ctl) { struct drm_device *dev = mdp5_kms->dev; struct msm_drm_private *priv = dev->dev_private; struct drm_encoder *encoder; encoder = mdp5_encoder_init(dev, intf, ctl); if (IS_ERR(encoder)) { dev_err(dev->dev, "failed to construct encoder\n"); return encoder; } priv->encoders[priv->num_encoders++] = encoder; return encoder; } static int get_dsi_id_from_intf(const struct mdp5_cfg_hw *hw_cfg, int intf_num) { const enum mdp5_intf_type *intfs = hw_cfg->intf.connect; const int intf_cnt = ARRAY_SIZE(hw_cfg->intf.connect); int id = 0, i; for (i = 0; i < intf_cnt; i++) { if (intfs[i] == INTF_DSI) { if (intf_num == i) return id; id++; } } return -EINVAL; } static int modeset_init_intf(struct mdp5_kms *mdp5_kms, struct mdp5_interface *intf) { struct drm_device *dev = mdp5_kms->dev; struct msm_drm_private *priv = dev->dev_private; struct mdp5_ctl_manager *ctlm = mdp5_kms->ctlm; struct mdp5_ctl *ctl; struct drm_encoder *encoder; int ret = 0; switch (intf->type) { case INTF_eDP: if (!priv->edp) break; ctl = mdp5_ctlm_request(ctlm, intf->num); if (!ctl) { ret = -EINVAL; break; } encoder = construct_encoder(mdp5_kms, intf, ctl); if (IS_ERR(encoder)) { ret = PTR_ERR(encoder); break; } ret = msm_edp_modeset_init(priv->edp, dev, encoder); break; case INTF_HDMI: if (!priv->hdmi) break; ctl = mdp5_ctlm_request(ctlm, intf->num); if (!ctl) { ret = -EINVAL; break; } encoder = construct_encoder(mdp5_kms, intf, ctl); if (IS_ERR(encoder)) { ret = PTR_ERR(encoder); break; } ret = msm_hdmi_modeset_init(priv->hdmi, dev, encoder); break; case INTF_DSI: { const struct mdp5_cfg_hw *hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg); int dsi_id = get_dsi_id_from_intf(hw_cfg, intf->num); if ((dsi_id >= ARRAY_SIZE(priv->dsi)) || (dsi_id < 0)) { dev_err(dev->dev, "failed to find dsi from intf %d\n", intf->num); ret = -EINVAL; break; } if (!priv->dsi[dsi_id]) break; ctl = mdp5_ctlm_request(ctlm, intf->num); if (!ctl) { ret = -EINVAL; break; } encoder = construct_encoder(mdp5_kms, intf, ctl); if (IS_ERR(encoder)) { ret = PTR_ERR(encoder); break; } ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, encoder); break; } default: dev_err(dev->dev, "unknown intf: %d\n", intf->type); ret = -EINVAL; break; } return ret; } static int modeset_init(struct mdp5_kms *mdp5_kms) { struct drm_device *dev = mdp5_kms->dev; struct msm_drm_private *priv = dev->dev_private; const struct mdp5_cfg_hw *hw_cfg; unsigned int num_crtcs; int i, ret, pi = 0, ci = 0; struct drm_plane *primary[MAX_BASES] = { NULL }; struct drm_plane *cursor[MAX_BASES] = { NULL }; hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg); /* * Construct encoders and modeset initialize connector devices * for each external display interface. */ for (i = 0; i < mdp5_kms->num_intfs; i++) { ret = modeset_init_intf(mdp5_kms, mdp5_kms->intfs[i]); if (ret) goto fail; } /* * We should ideally have less number of encoders (set up by parsing * the MDP5 interfaces) than the number of layer mixers present in HW, * but let's be safe here anyway */ num_crtcs = min(priv->num_encoders, mdp5_kms->num_hwmixers); /* * Construct planes equaling the number of hw pipes, and CRTCs for the * N encoders set up by the driver. The first N planes become primary * planes for the CRTCs, with the remainder as overlay planes: */ for (i = 0; i < mdp5_kms->num_hwpipes; i++) { struct mdp5_hw_pipe *hwpipe = mdp5_kms->hwpipes[i]; struct drm_plane *plane; enum drm_plane_type type; if (i < num_crtcs) type = DRM_PLANE_TYPE_PRIMARY; else if (hwpipe->caps & MDP_PIPE_CAP_CURSOR) type = DRM_PLANE_TYPE_CURSOR; else type = DRM_PLANE_TYPE_OVERLAY; plane = mdp5_plane_init(dev, type); if (IS_ERR(plane)) { ret = PTR_ERR(plane); dev_err(dev->dev, "failed to construct plane %d (%d)\n", i, ret); goto fail; } priv->planes[priv->num_planes++] = plane; if (type == DRM_PLANE_TYPE_PRIMARY) primary[pi++] = plane; if (type == DRM_PLANE_TYPE_CURSOR) cursor[ci++] = plane; } for (i = 0; i < num_crtcs; i++) { struct drm_crtc *crtc; crtc = mdp5_crtc_init(dev, primary[i], cursor[i], i); if (IS_ERR(crtc)) { ret = PTR_ERR(crtc); dev_err(dev->dev, "failed to construct crtc %d (%d)\n", i, ret); goto fail; } priv->crtcs[priv->num_crtcs++] = crtc; } /* * Now that we know the number of crtcs we've created, set the possible * crtcs for the encoders */ for (i = 0; i < priv->num_encoders; i++) { struct drm_encoder *encoder = priv->encoders[i]; encoder->possible_crtcs = (1 << priv->num_crtcs) - 1; } return 0; fail: return ret; } static void read_mdp_hw_revision(struct mdp5_kms *mdp5_kms, u32 *major, u32 *minor) { struct device *dev = &mdp5_kms->pdev->dev; u32 version; pm_runtime_get_sync(dev); version = mdp5_read(mdp5_kms, REG_MDP5_HW_VERSION); pm_runtime_put_sync(dev); *major = FIELD(version, MDP5_HW_VERSION_MAJOR); *minor = FIELD(version, MDP5_HW_VERSION_MINOR); dev_info(dev, "MDP5 version v%d.%d", *major, *minor); } static int get_clk(struct platform_device *pdev, struct clk **clkp, const char *name, bool mandatory) { struct device *dev = &pdev->dev; struct clk *clk = msm_clk_get(pdev, name); if (IS_ERR(clk) && mandatory) { dev_err(dev, "failed to get %s (%ld)\n", name, PTR_ERR(clk)); return PTR_ERR(clk); } if (IS_ERR(clk)) DBG("skipping %s", name); else *clkp = clk; return 0; } static struct drm_encoder *get_encoder_from_crtc(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct drm_encoder *encoder; drm_for_each_encoder(encoder, dev) if (encoder->crtc == crtc) return encoder; return NULL; } static bool mdp5_get_scanoutpos(struct drm_device *dev, unsigned int pipe, bool in_vblank_irq, int *vpos, int *hpos, ktime_t *stime, ktime_t *etime, const struct drm_display_mode *mode) { struct msm_drm_private *priv = dev->dev_private; struct drm_crtc *crtc; struct drm_encoder *encoder; int line, vsw, vbp, vactive_start, vactive_end, vfp_end; crtc = priv->crtcs[pipe]; if (!crtc) { DRM_ERROR("Invalid crtc %d\n", pipe); return false; } encoder = get_encoder_from_crtc(crtc); if (!encoder) { DRM_ERROR("no encoder found for crtc %d\n", pipe); return false; } vsw = mode->crtc_vsync_end - mode->crtc_vsync_start; vbp = mode->crtc_vtotal - mode->crtc_vsync_end; /* * the line counter is 1 at the start of the VSYNC pulse and VTOTAL at * the end of VFP. Translate the porch values relative to the line * counter positions. */ vactive_start = vsw + vbp + 1; vactive_end = vactive_start + mode->crtc_vdisplay; /* last scan line before VSYNC */ vfp_end = mode->crtc_vtotal; if (stime) *stime = ktime_get(); line = mdp5_encoder_get_linecount(encoder); if (line < vactive_start) { line -= vactive_start; } else if (line > vactive_end) { line = line - vfp_end - vactive_start; } else { line -= vactive_start; } *vpos = line; *hpos = 0; if (etime) *etime = ktime_get(); return true; } static u32 mdp5_get_vblank_counter(struct drm_device *dev, unsigned int pipe) { struct msm_drm_private *priv = dev->dev_private; struct drm_crtc *crtc; struct drm_encoder *encoder; if (pipe >= priv->num_crtcs) return 0; crtc = priv->crtcs[pipe]; if (!crtc) return 0; encoder = get_encoder_from_crtc(crtc); if (!encoder) return 0; return mdp5_encoder_get_framecount(encoder); } struct msm_kms *mdp5_kms_init(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; struct platform_device *pdev; struct mdp5_kms *mdp5_kms; struct mdp5_cfg *config; struct msm_kms *kms; struct msm_gem_address_space *aspace; int irq, i, ret; /* priv->kms would have been populated by the MDP5 driver */ kms = priv->kms; if (!kms) return NULL; mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); mdp_kms_init(&mdp5_kms->base, &kms_funcs); pdev = mdp5_kms->pdev; irq = irq_of_parse_and_map(pdev->dev.of_node, 0); if (irq < 0) { ret = irq; dev_err(&pdev->dev, "failed to get irq: %d\n", ret); goto fail; } kms->irq = irq; config = mdp5_cfg_get_config(mdp5_kms->cfg); /* make sure things are off before attaching iommu (bootloader could * have left things on, in which case we'll start getting faults if * we don't disable): */ pm_runtime_get_sync(&pdev->dev); for (i = 0; i < MDP5_INTF_NUM_MAX; i++) { if (mdp5_cfg_intf_is_virtual(config->hw->intf.connect[i]) || !config->hw->intf.base[i]) continue; mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(i), 0); mdp5_write(mdp5_kms, REG_MDP5_INTF_FRAME_LINE_COUNT_EN(i), 0x3); } mdelay(16); if (config->platform.iommu) { aspace = msm_gem_address_space_create(&pdev->dev, config->platform.iommu, "mdp5"); if (IS_ERR(aspace)) { ret = PTR_ERR(aspace); goto fail; } kms->aspace = aspace; ret = aspace->mmu->funcs->attach(aspace->mmu, iommu_ports, ARRAY_SIZE(iommu_ports)); if (ret) { dev_err(&pdev->dev, "failed to attach iommu: %d\n", ret); goto fail; } } else { dev_info(&pdev->dev, "no iommu, fallback to phys contig buffers for scanout\n"); aspace = NULL; } pm_runtime_put_sync(&pdev->dev); ret = modeset_init(mdp5_kms); if (ret) { dev_err(&pdev->dev, "modeset_init failed: %d\n", ret); goto fail; } dev->mode_config.min_width = 0; dev->mode_config.min_height = 0; dev->mode_config.max_width = 0xffff; dev->mode_config.max_height = 0xffff; dev->driver->get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos; dev->driver->get_scanout_position = mdp5_get_scanoutpos; dev->driver->get_vblank_counter = mdp5_get_vblank_counter; dev->max_vblank_count = 0xffffffff; dev->vblank_disable_immediate = true; return kms; fail: if (kms) mdp5_kms_destroy(kms); return ERR_PTR(ret); } static void mdp5_destroy(struct platform_device *pdev) { struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev); int i; if (mdp5_kms->ctlm) mdp5_ctlm_destroy(mdp5_kms->ctlm); if (mdp5_kms->smp) mdp5_smp_destroy(mdp5_kms->smp); if (mdp5_kms->cfg) mdp5_cfg_destroy(mdp5_kms->cfg); for (i = 0; i < mdp5_kms->num_intfs; i++) kfree(mdp5_kms->intfs[i]); if (mdp5_kms->rpm_enabled) pm_runtime_disable(&pdev->dev); drm_atomic_private_obj_fini(&mdp5_kms->glob_state); drm_modeset_lock_fini(&mdp5_kms->glob_state_lock); } static int construct_pipes(struct mdp5_kms *mdp5_kms, int cnt, const enum mdp5_pipe *pipes, const uint32_t *offsets, uint32_t caps) { struct drm_device *dev = mdp5_kms->dev; int i, ret; for (i = 0; i < cnt; i++) { struct mdp5_hw_pipe *hwpipe; hwpipe = mdp5_pipe_init(pipes[i], offsets[i], caps); if (IS_ERR(hwpipe)) { ret = PTR_ERR(hwpipe); dev_err(dev->dev, "failed to construct pipe for %s (%d)\n", pipe2name(pipes[i]), ret); return ret; } hwpipe->idx = mdp5_kms->num_hwpipes; mdp5_kms->hwpipes[mdp5_kms->num_hwpipes++] = hwpipe; } return 0; } static int hwpipe_init(struct mdp5_kms *mdp5_kms) { static const enum mdp5_pipe rgb_planes[] = { SSPP_RGB0, SSPP_RGB1, SSPP_RGB2, SSPP_RGB3, }; static const enum mdp5_pipe vig_planes[] = { SSPP_VIG0, SSPP_VIG1, SSPP_VIG2, SSPP_VIG3, }; static const enum mdp5_pipe dma_planes[] = { SSPP_DMA0, SSPP_DMA1, }; static const enum mdp5_pipe cursor_planes[] = { SSPP_CURSOR0, SSPP_CURSOR1, }; const struct mdp5_cfg_hw *hw_cfg; int ret; hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg); /* Construct RGB pipes: */ ret = construct_pipes(mdp5_kms, hw_cfg->pipe_rgb.count, rgb_planes, hw_cfg->pipe_rgb.base, hw_cfg->pipe_rgb.caps); if (ret) return ret; /* Construct video (VIG) pipes: */ ret = construct_pipes(mdp5_kms, hw_cfg->pipe_vig.count, vig_planes, hw_cfg->pipe_vig.base, hw_cfg->pipe_vig.caps); if (ret) return ret; /* Construct DMA pipes: */ ret = construct_pipes(mdp5_kms, hw_cfg->pipe_dma.count, dma_planes, hw_cfg->pipe_dma.base, hw_cfg->pipe_dma.caps); if (ret) return ret; /* Construct cursor pipes: */ ret = construct_pipes(mdp5_kms, hw_cfg->pipe_cursor.count, cursor_planes, hw_cfg->pipe_cursor.base, hw_cfg->pipe_cursor.caps); if (ret) return ret; return 0; } static int hwmixer_init(struct mdp5_kms *mdp5_kms) { struct drm_device *dev = mdp5_kms->dev; const struct mdp5_cfg_hw *hw_cfg; int i, ret; hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg); for (i = 0; i < hw_cfg->lm.count; i++) { struct mdp5_hw_mixer *mixer; mixer = mdp5_mixer_init(&hw_cfg->lm.instances[i]); if (IS_ERR(mixer)) { ret = PTR_ERR(mixer); dev_err(dev->dev, "failed to construct LM%d (%d)\n", i, ret); return ret; } mixer->idx = mdp5_kms->num_hwmixers; mdp5_kms->hwmixers[mdp5_kms->num_hwmixers++] = mixer; } return 0; } static int interface_init(struct mdp5_kms *mdp5_kms) { struct drm_device *dev = mdp5_kms->dev; const struct mdp5_cfg_hw *hw_cfg; const enum mdp5_intf_type *intf_types; int i; hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg); intf_types = hw_cfg->intf.connect; for (i = 0; i < ARRAY_SIZE(hw_cfg->intf.connect); i++) { struct mdp5_interface *intf; if (intf_types[i] == INTF_DISABLED) continue; intf = kzalloc(sizeof(*intf), GFP_KERNEL); if (!intf) { dev_err(dev->dev, "failed to construct INTF%d\n", i); return -ENOMEM; } intf->num = i; intf->type = intf_types[i]; intf->mode = MDP5_INTF_MODE_NONE; intf->idx = mdp5_kms->num_intfs; mdp5_kms->intfs[mdp5_kms->num_intfs++] = intf; } return 0; } static int mdp5_init(struct platform_device *pdev, struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; struct mdp5_kms *mdp5_kms; struct mdp5_cfg *config; u32 major, minor; int ret; mdp5_kms = devm_kzalloc(&pdev->dev, sizeof(*mdp5_kms), GFP_KERNEL); if (!mdp5_kms) { ret = -ENOMEM; goto fail; } platform_set_drvdata(pdev, mdp5_kms); spin_lock_init(&mdp5_kms->resource_lock); mdp5_kms->dev = dev; mdp5_kms->pdev = pdev; ret = mdp5_global_obj_init(mdp5_kms); if (ret) goto fail; mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys", "MDP5"); if (IS_ERR(mdp5_kms->mmio)) { ret = PTR_ERR(mdp5_kms->mmio); goto fail; } /* mandatory clocks: */ ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus", true); if (ret) goto fail; ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface", true); if (ret) goto fail; ret = get_clk(pdev, &mdp5_kms->core_clk, "core", true); if (ret) goto fail; ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync", true); if (ret) goto fail; /* optional clocks: */ get_clk(pdev, &mdp5_kms->lut_clk, "lut", false); /* we need to set a default rate before enabling. Set a safe * rate first, then figure out hw revision, and then set a * more optimal rate: */ clk_set_rate(mdp5_kms->core_clk, 200000000); pm_runtime_enable(&pdev->dev); mdp5_kms->rpm_enabled = true; read_mdp_hw_revision(mdp5_kms, &major, &minor); mdp5_kms->cfg = mdp5_cfg_init(mdp5_kms, major, minor); if (IS_ERR(mdp5_kms->cfg)) { ret = PTR_ERR(mdp5_kms->cfg); mdp5_kms->cfg = NULL; goto fail; } config = mdp5_cfg_get_config(mdp5_kms->cfg); mdp5_kms->caps = config->hw->mdp.caps; /* TODO: compute core clock rate at runtime */ clk_set_rate(mdp5_kms->core_clk, config->hw->max_clk); /* * Some chipsets have a Shared Memory Pool (SMP), while others * have dedicated latency buffering per source pipe instead; * this section initializes the SMP: */ if (mdp5_kms->caps & MDP_CAP_SMP) { mdp5_kms->smp = mdp5_smp_init(mdp5_kms, &config->hw->smp); if (IS_ERR(mdp5_kms->smp)) { ret = PTR_ERR(mdp5_kms->smp); mdp5_kms->smp = NULL; goto fail; } } mdp5_kms->ctlm = mdp5_ctlm_init(dev, mdp5_kms->mmio, mdp5_kms->cfg); if (IS_ERR(mdp5_kms->ctlm)) { ret = PTR_ERR(mdp5_kms->ctlm); mdp5_kms->ctlm = NULL; goto fail; } ret = hwpipe_init(mdp5_kms); if (ret) goto fail; ret = hwmixer_init(mdp5_kms); if (ret) goto fail; ret = interface_init(mdp5_kms); if (ret) goto fail; /* set uninit-ed kms */ priv->kms = &mdp5_kms->base.base; return 0; fail: if (mdp5_kms) mdp5_destroy(pdev); return ret; } static int mdp5_bind(struct device *dev, struct device *master, void *data) { struct drm_device *ddev = dev_get_drvdata(master); struct platform_device *pdev = to_platform_device(dev); DBG(""); return mdp5_init(pdev, ddev); } static void mdp5_unbind(struct device *dev, struct device *master, void *data) { struct platform_device *pdev = to_platform_device(dev); mdp5_destroy(pdev); } static const struct component_ops mdp5_ops = { .bind = mdp5_bind, .unbind = mdp5_unbind, }; static int mdp5_dev_probe(struct platform_device *pdev) { DBG(""); return component_add(&pdev->dev, &mdp5_ops); } static int mdp5_dev_remove(struct platform_device *pdev) { DBG(""); component_del(&pdev->dev, &mdp5_ops); return 0; } static __maybe_unused int mdp5_runtime_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev); DBG(""); return mdp5_disable(mdp5_kms); } static __maybe_unused int mdp5_runtime_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev); DBG(""); return mdp5_enable(mdp5_kms); } static const struct dev_pm_ops mdp5_pm_ops = { SET_RUNTIME_PM_OPS(mdp5_runtime_suspend, mdp5_runtime_resume, NULL) }; static const struct of_device_id mdp5_dt_match[] = { { .compatible = "qcom,mdp5", }, /* to support downstream DT files */ { .compatible = "qcom,mdss_mdp", }, {} }; MODULE_DEVICE_TABLE(of, mdp5_dt_match); static struct platform_driver mdp5_driver = { .probe = mdp5_dev_probe, .remove = mdp5_dev_remove, .driver = { .name = "msm_mdp", .of_match_table = mdp5_dt_match, .pm = &mdp5_pm_ops, }, }; void __init msm_mdp_register(void) { DBG(""); platform_driver_register(&mdp5_driver); } void __exit msm_mdp_unregister(void) { DBG(""); platform_driver_unregister(&mdp5_driver); }