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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (C) STMicroelectronics SA 20144 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>5 * Fabien Dessenne <fabien.dessenne@st.com>6 * for STMicroelectronics.7 */8 9#include <linux/clk.h>10 11#include <drm/drm_atomic.h>12#include <drm/drm_atomic_helper.h>13#include <drm/drm_device.h>14#include <drm/drm_print.h>15#include <drm/drm_probe_helper.h>16#include <drm/drm_vblank.h>17 18#include "sti_compositor.h"19#include "sti_crtc.h"20#include "sti_drv.h"21#include "sti_vid.h"22#include "sti_vtg.h"23 24static void sti_crtc_atomic_enable(struct drm_crtc *crtc,25 struct drm_atomic_state *state)26{27 struct sti_mixer *mixer = to_sti_mixer(crtc);28 29 DRM_DEBUG_DRIVER("\n");30 31 mixer->status = STI_MIXER_READY;32 33 drm_crtc_vblank_on(crtc);34}35 36static void sti_crtc_atomic_disable(struct drm_crtc *crtc,37 struct drm_atomic_state *state)38{39 struct sti_mixer *mixer = to_sti_mixer(crtc);40 41 DRM_DEBUG_DRIVER("\n");42 43 mixer->status = STI_MIXER_DISABLING;44 45 drm_crtc_wait_one_vblank(crtc);46}47 48static int49sti_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode)50{51 struct sti_mixer *mixer = to_sti_mixer(crtc);52 struct device *dev = mixer->dev;53 struct sti_compositor *compo = dev_get_drvdata(dev);54 struct clk *compo_clk, *pix_clk;55 int rate = mode->clock * 1000;56 57 DRM_DEBUG_KMS("CRTC:%d (%s) mode: (%s)\n",58 crtc->base.id, sti_mixer_to_str(mixer), mode->name);59 60 DRM_DEBUG_KMS(DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));61 62 if (mixer->id == STI_MIXER_MAIN) {63 compo_clk = compo->clk_compo_main;64 pix_clk = compo->clk_pix_main;65 } else {66 compo_clk = compo->clk_compo_aux;67 pix_clk = compo->clk_pix_aux;68 }69 70 /* Prepare and enable the compo IP clock */71 if (clk_prepare_enable(compo_clk)) {72 DRM_INFO("Failed to prepare/enable compositor clk\n");73 goto compo_error;74 }75 76 /* Set rate and prepare/enable pixel clock */77 if (clk_set_rate(pix_clk, rate) < 0) {78 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);79 goto pix_error;80 }81 if (clk_prepare_enable(pix_clk)) {82 DRM_ERROR("Failed to prepare/enable pix clk\n");83 goto pix_error;84 }85 86 sti_vtg_set_config(compo->vtg[mixer->id], &crtc->mode);87 88 if (sti_mixer_active_video_area(mixer, &crtc->mode)) {89 DRM_ERROR("Can't set active video area\n");90 goto mixer_error;91 }92 93 return 0;94 95mixer_error:96 clk_disable_unprepare(pix_clk);97pix_error:98 clk_disable_unprepare(compo_clk);99compo_error:100 return -EINVAL;101}102 103static void sti_crtc_disable(struct drm_crtc *crtc)104{105 struct sti_mixer *mixer = to_sti_mixer(crtc);106 struct device *dev = mixer->dev;107 struct sti_compositor *compo = dev_get_drvdata(dev);108 109 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));110 111 /* Disable Background */112 sti_mixer_set_background_status(mixer, false);113 114 drm_crtc_vblank_off(crtc);115 116 /* Disable pixel clock and compo IP clocks */117 if (mixer->id == STI_MIXER_MAIN) {118 clk_disable_unprepare(compo->clk_pix_main);119 clk_disable_unprepare(compo->clk_compo_main);120 } else {121 clk_disable_unprepare(compo->clk_pix_aux);122 clk_disable_unprepare(compo->clk_compo_aux);123 }124 125 mixer->status = STI_MIXER_DISABLED;126}127 128static void129sti_crtc_mode_set_nofb(struct drm_crtc *crtc)130{131 sti_crtc_mode_set(crtc, &crtc->state->adjusted_mode);132}133 134static void sti_crtc_atomic_flush(struct drm_crtc *crtc,135 struct drm_atomic_state *state)136{137 struct drm_device *drm_dev = crtc->dev;138 struct sti_mixer *mixer = to_sti_mixer(crtc);139 struct sti_compositor *compo = dev_get_drvdata(mixer->dev);140 struct drm_plane *p;141 struct drm_pending_vblank_event *event;142 unsigned long flags;143 144 DRM_DEBUG_DRIVER("\n");145 146 /* perform plane actions */147 list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {148 struct sti_plane *plane = to_sti_plane(p);149 150 switch (plane->status) {151 case STI_PLANE_UPDATED:152 /* ignore update for other CRTC */153 if (p->state->crtc != crtc)154 continue;155 156 /* update planes tag as updated */157 DRM_DEBUG_DRIVER("update plane %s\n",158 sti_plane_to_str(plane));159 160 if (sti_mixer_set_plane_depth(mixer, plane)) {161 DRM_ERROR("Cannot set plane %s depth\n",162 sti_plane_to_str(plane));163 break;164 }165 166 if (sti_mixer_set_plane_status(mixer, plane, true)) {167 DRM_ERROR("Cannot enable plane %s at mixer\n",168 sti_plane_to_str(plane));169 break;170 }171 172 /* if plane is HQVDP_0 then commit the vid[0] */173 if (plane->desc == STI_HQVDP_0)174 sti_vid_commit(compo->vid[0], p->state);175 176 plane->status = STI_PLANE_READY;177 178 break;179 case STI_PLANE_DISABLING:180 /* disabling sequence for planes tag as disabling */181 DRM_DEBUG_DRIVER("disable plane %s from mixer\n",182 sti_plane_to_str(plane));183 184 if (sti_mixer_set_plane_status(mixer, plane, false)) {185 DRM_ERROR("Cannot disable plane %s at mixer\n",186 sti_plane_to_str(plane));187 continue;188 }189 190 if (plane->desc == STI_CURSOR)191 /* tag plane status for disabled */192 plane->status = STI_PLANE_DISABLED;193 else194 /* tag plane status for flushing */195 plane->status = STI_PLANE_FLUSHING;196 197 /* if plane is HQVDP_0 then disable the vid[0] */198 if (plane->desc == STI_HQVDP_0)199 sti_vid_disable(compo->vid[0]);200 201 break;202 default:203 /* Other status case are not handled */204 break;205 }206 }207 208 event = crtc->state->event;209 if (event) {210 crtc->state->event = NULL;211 212 spin_lock_irqsave(&crtc->dev->event_lock, flags);213 if (drm_crtc_vblank_get(crtc) == 0)214 drm_crtc_arm_vblank_event(crtc, event);215 else216 drm_crtc_send_vblank_event(crtc, event);217 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);218 }219}220 221static const struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {222 .mode_set_nofb = sti_crtc_mode_set_nofb,223 .atomic_flush = sti_crtc_atomic_flush,224 .atomic_enable = sti_crtc_atomic_enable,225 .atomic_disable = sti_crtc_atomic_disable,226};227 228static void sti_crtc_destroy(struct drm_crtc *crtc)229{230 DRM_DEBUG_KMS("\n");231 drm_crtc_cleanup(crtc);232}233 234static int sti_crtc_set_property(struct drm_crtc *crtc,235 struct drm_property *property,236 uint64_t val)237{238 DRM_DEBUG_KMS("\n");239 return 0;240}241 242int sti_crtc_vblank_cb(struct notifier_block *nb,243 unsigned long event, void *data)244{245 struct sti_compositor *compo;246 struct drm_crtc *crtc = data;247 struct sti_mixer *mixer;248 unsigned int pipe;249 250 pipe = drm_crtc_index(crtc);251 compo = container_of(nb, struct sti_compositor, vtg_vblank_nb[pipe]);252 mixer = compo->mixer[pipe];253 254 if ((event != VTG_TOP_FIELD_EVENT) &&255 (event != VTG_BOTTOM_FIELD_EVENT)) {256 DRM_ERROR("unknown event: %lu\n", event);257 return -EINVAL;258 }259 260 drm_crtc_handle_vblank(crtc);261 262 if (mixer->status == STI_MIXER_DISABLING) {263 struct drm_plane *p;264 265 /* Disable mixer only if all overlay planes (GDP and VDP)266 * are disabled */267 list_for_each_entry(p, &crtc->dev->mode_config.plane_list,268 head) {269 struct sti_plane *plane = to_sti_plane(p);270 271 if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)272 if (plane->status != STI_PLANE_DISABLED)273 return 0;274 }275 sti_crtc_disable(crtc);276 }277 278 return 0;279}280 281static int sti_crtc_enable_vblank(struct drm_crtc *crtc)282{283 struct drm_device *dev = crtc->dev;284 unsigned int pipe = crtc->index;285 struct sti_private *dev_priv = dev->dev_private;286 struct sti_compositor *compo = dev_priv->compo;287 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb[pipe];288 struct sti_vtg *vtg = compo->vtg[pipe];289 290 DRM_DEBUG_DRIVER("\n");291 292 if (sti_vtg_register_client(vtg, vtg_vblank_nb, crtc)) {293 DRM_ERROR("Cannot register VTG notifier\n");294 return -EINVAL;295 }296 297 return 0;298}299 300static void sti_crtc_disable_vblank(struct drm_crtc *crtc)301{302 struct drm_device *drm_dev = crtc->dev;303 unsigned int pipe = crtc->index;304 struct sti_private *priv = drm_dev->dev_private;305 struct sti_compositor *compo = priv->compo;306 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb[pipe];307 struct sti_vtg *vtg = compo->vtg[pipe];308 309 DRM_DEBUG_DRIVER("\n");310 311 if (sti_vtg_unregister_client(vtg, vtg_vblank_nb))312 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");313}314 315static int sti_crtc_late_register(struct drm_crtc *crtc)316{317 struct sti_mixer *mixer = to_sti_mixer(crtc);318 struct sti_compositor *compo = dev_get_drvdata(mixer->dev);319 320 if (drm_crtc_index(crtc) == 0)321 sti_compositor_debugfs_init(compo, crtc->dev->primary);322 323 return 0;324}325 326static const struct drm_crtc_funcs sti_crtc_funcs = {327 .set_config = drm_atomic_helper_set_config,328 .page_flip = drm_atomic_helper_page_flip,329 .destroy = sti_crtc_destroy,330 .set_property = sti_crtc_set_property,331 .reset = drm_atomic_helper_crtc_reset,332 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,333 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,334 .late_register = sti_crtc_late_register,335 .enable_vblank = sti_crtc_enable_vblank,336 .disable_vblank = sti_crtc_disable_vblank,337};338 339bool sti_crtc_is_main(struct drm_crtc *crtc)340{341 struct sti_mixer *mixer = to_sti_mixer(crtc);342 343 if (mixer->id == STI_MIXER_MAIN)344 return true;345 346 return false;347}348 349int sti_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,350 struct drm_plane *primary, struct drm_plane *cursor)351{352 struct drm_crtc *crtc = &mixer->drm_crtc;353 int res;354 355 res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,356 &sti_crtc_funcs, NULL);357 if (res) {358 DRM_ERROR("Can't initialize CRTC\n");359 return -EINVAL;360 }361 362 drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);363 364 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",365 crtc->base.id, sti_mixer_to_str(mixer));366 367 return 0;368}369