371 lines
9.4 KiB
C
371 lines
9.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) STMicroelectronics SA 2014
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* Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
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* Fabien Dessenne <fabien.dessenne@st.com>
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* for STMicroelectronics.
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*/
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#include <linux/clk.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_plane_helper.h>
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#include "sti_compositor.h"
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#include "sti_crtc.h"
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#include "sti_drv.h"
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#include "sti_vid.h"
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#include "sti_vtg.h"
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static void sti_crtc_atomic_enable(struct drm_crtc *crtc,
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struct drm_crtc_state *old_state)
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{
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struct sti_mixer *mixer = to_sti_mixer(crtc);
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DRM_DEBUG_DRIVER("\n");
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mixer->status = STI_MIXER_READY;
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drm_crtc_vblank_on(crtc);
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}
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static void sti_crtc_atomic_disable(struct drm_crtc *crtc,
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struct drm_crtc_state *old_state)
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{
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struct sti_mixer *mixer = to_sti_mixer(crtc);
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DRM_DEBUG_DRIVER("\n");
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mixer->status = STI_MIXER_DISABLING;
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}
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static int
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sti_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode)
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{
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struct sti_mixer *mixer = to_sti_mixer(crtc);
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struct device *dev = mixer->dev;
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struct sti_compositor *compo = dev_get_drvdata(dev);
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struct clk *compo_clk, *pix_clk;
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int rate = mode->clock * 1000;
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DRM_DEBUG_KMS("CRTC:%d (%s) mode:%d (%s)\n",
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crtc->base.id, sti_mixer_to_str(mixer),
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mode->base.id, mode->name);
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DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
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mode->vrefresh, mode->clock,
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mode->hdisplay,
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mode->hsync_start, mode->hsync_end,
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mode->htotal,
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mode->vdisplay,
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mode->vsync_start, mode->vsync_end,
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mode->vtotal, mode->type, mode->flags);
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if (mixer->id == STI_MIXER_MAIN) {
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compo_clk = compo->clk_compo_main;
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pix_clk = compo->clk_pix_main;
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} else {
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compo_clk = compo->clk_compo_aux;
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pix_clk = compo->clk_pix_aux;
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}
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/* Prepare and enable the compo IP clock */
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if (clk_prepare_enable(compo_clk)) {
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DRM_INFO("Failed to prepare/enable compositor clk\n");
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goto compo_error;
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}
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/* Set rate and prepare/enable pixel clock */
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if (clk_set_rate(pix_clk, rate) < 0) {
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DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
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goto pix_error;
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}
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if (clk_prepare_enable(pix_clk)) {
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DRM_ERROR("Failed to prepare/enable pix clk\n");
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goto pix_error;
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}
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sti_vtg_set_config(compo->vtg[mixer->id], &crtc->mode);
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if (sti_mixer_active_video_area(mixer, &crtc->mode)) {
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DRM_ERROR("Can't set active video area\n");
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goto mixer_error;
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}
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return 0;
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mixer_error:
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clk_disable_unprepare(pix_clk);
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pix_error:
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clk_disable_unprepare(compo_clk);
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compo_error:
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return -EINVAL;
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}
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static void sti_crtc_disable(struct drm_crtc *crtc)
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{
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struct sti_mixer *mixer = to_sti_mixer(crtc);
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struct device *dev = mixer->dev;
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struct sti_compositor *compo = dev_get_drvdata(dev);
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DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
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/* Disable Background */
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sti_mixer_set_background_status(mixer, false);
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drm_crtc_vblank_off(crtc);
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/* Disable pixel clock and compo IP clocks */
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if (mixer->id == STI_MIXER_MAIN) {
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clk_disable_unprepare(compo->clk_pix_main);
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clk_disable_unprepare(compo->clk_compo_main);
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} else {
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clk_disable_unprepare(compo->clk_pix_aux);
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clk_disable_unprepare(compo->clk_compo_aux);
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}
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mixer->status = STI_MIXER_DISABLED;
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}
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static void
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sti_crtc_mode_set_nofb(struct drm_crtc *crtc)
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{
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sti_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
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}
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static void sti_crtc_atomic_flush(struct drm_crtc *crtc,
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struct drm_crtc_state *old_crtc_state)
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{
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struct drm_device *drm_dev = crtc->dev;
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struct sti_mixer *mixer = to_sti_mixer(crtc);
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struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
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struct drm_plane *p;
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struct drm_pending_vblank_event *event;
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unsigned long flags;
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DRM_DEBUG_DRIVER("\n");
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/* perform plane actions */
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list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
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struct sti_plane *plane = to_sti_plane(p);
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switch (plane->status) {
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case STI_PLANE_UPDATED:
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/* ignore update for other CRTC */
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if (p->state->crtc != crtc)
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continue;
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/* update planes tag as updated */
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DRM_DEBUG_DRIVER("update plane %s\n",
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sti_plane_to_str(plane));
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if (sti_mixer_set_plane_depth(mixer, plane)) {
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DRM_ERROR("Cannot set plane %s depth\n",
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sti_plane_to_str(plane));
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break;
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}
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if (sti_mixer_set_plane_status(mixer, plane, true)) {
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DRM_ERROR("Cannot enable plane %s at mixer\n",
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sti_plane_to_str(plane));
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break;
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}
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/* if plane is HQVDP_0 then commit the vid[0] */
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if (plane->desc == STI_HQVDP_0)
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sti_vid_commit(compo->vid[0], p->state);
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plane->status = STI_PLANE_READY;
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break;
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case STI_PLANE_DISABLING:
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/* disabling sequence for planes tag as disabling */
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DRM_DEBUG_DRIVER("disable plane %s from mixer\n",
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sti_plane_to_str(plane));
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if (sti_mixer_set_plane_status(mixer, plane, false)) {
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DRM_ERROR("Cannot disable plane %s at mixer\n",
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sti_plane_to_str(plane));
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continue;
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}
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if (plane->desc == STI_CURSOR)
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/* tag plane status for disabled */
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plane->status = STI_PLANE_DISABLED;
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else
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/* tag plane status for flushing */
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plane->status = STI_PLANE_FLUSHING;
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/* if plane is HQVDP_0 then disable the vid[0] */
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if (plane->desc == STI_HQVDP_0)
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sti_vid_disable(compo->vid[0]);
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break;
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default:
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/* Other status case are not handled */
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break;
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}
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}
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event = crtc->state->event;
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if (event) {
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crtc->state->event = NULL;
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spin_lock_irqsave(&crtc->dev->event_lock, flags);
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if (drm_crtc_vblank_get(crtc) == 0)
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drm_crtc_arm_vblank_event(crtc, event);
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else
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drm_crtc_send_vblank_event(crtc, event);
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spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
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}
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}
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static const struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
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.mode_set_nofb = sti_crtc_mode_set_nofb,
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.atomic_flush = sti_crtc_atomic_flush,
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.atomic_enable = sti_crtc_atomic_enable,
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.atomic_disable = sti_crtc_atomic_disable,
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};
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static void sti_crtc_destroy(struct drm_crtc *crtc)
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{
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DRM_DEBUG_KMS("\n");
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drm_crtc_cleanup(crtc);
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}
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static int sti_crtc_set_property(struct drm_crtc *crtc,
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struct drm_property *property,
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uint64_t val)
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{
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DRM_DEBUG_KMS("\n");
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return 0;
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}
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int sti_crtc_vblank_cb(struct notifier_block *nb,
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unsigned long event, void *data)
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{
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struct sti_compositor *compo;
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struct drm_crtc *crtc = data;
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struct sti_mixer *mixer;
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struct sti_private *priv;
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unsigned int pipe;
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priv = crtc->dev->dev_private;
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pipe = drm_crtc_index(crtc);
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compo = container_of(nb, struct sti_compositor, vtg_vblank_nb[pipe]);
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mixer = compo->mixer[pipe];
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if ((event != VTG_TOP_FIELD_EVENT) &&
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(event != VTG_BOTTOM_FIELD_EVENT)) {
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DRM_ERROR("unknown event: %lu\n", event);
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return -EINVAL;
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}
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drm_crtc_handle_vblank(crtc);
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if (mixer->status == STI_MIXER_DISABLING) {
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struct drm_plane *p;
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/* Disable mixer only if all overlay planes (GDP and VDP)
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* are disabled */
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list_for_each_entry(p, &crtc->dev->mode_config.plane_list,
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head) {
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struct sti_plane *plane = to_sti_plane(p);
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if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)
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if (plane->status != STI_PLANE_DISABLED)
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return 0;
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}
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sti_crtc_disable(crtc);
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}
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return 0;
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}
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int sti_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
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{
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struct sti_private *dev_priv = dev->dev_private;
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struct sti_compositor *compo = dev_priv->compo;
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struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb[pipe];
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struct drm_crtc *crtc = &compo->mixer[pipe]->drm_crtc;
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struct sti_vtg *vtg = compo->vtg[pipe];
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DRM_DEBUG_DRIVER("\n");
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if (sti_vtg_register_client(vtg, vtg_vblank_nb, crtc)) {
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DRM_ERROR("Cannot register VTG notifier\n");
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return -EINVAL;
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}
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return 0;
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}
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void sti_crtc_disable_vblank(struct drm_device *drm_dev, unsigned int pipe)
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{
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struct sti_private *priv = drm_dev->dev_private;
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struct sti_compositor *compo = priv->compo;
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struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb[pipe];
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struct sti_vtg *vtg = compo->vtg[pipe];
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DRM_DEBUG_DRIVER("\n");
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if (sti_vtg_unregister_client(vtg, vtg_vblank_nb))
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DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
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}
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static int sti_crtc_late_register(struct drm_crtc *crtc)
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{
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struct sti_mixer *mixer = to_sti_mixer(crtc);
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struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
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if (drm_crtc_index(crtc) == 0)
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return sti_compositor_debugfs_init(compo, crtc->dev->primary);
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return 0;
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}
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static const struct drm_crtc_funcs sti_crtc_funcs = {
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.set_config = drm_atomic_helper_set_config,
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.page_flip = drm_atomic_helper_page_flip,
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.destroy = sti_crtc_destroy,
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.set_property = sti_crtc_set_property,
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.reset = drm_atomic_helper_crtc_reset,
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.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
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.late_register = sti_crtc_late_register,
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};
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bool sti_crtc_is_main(struct drm_crtc *crtc)
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{
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struct sti_mixer *mixer = to_sti_mixer(crtc);
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if (mixer->id == STI_MIXER_MAIN)
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return true;
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return false;
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}
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int sti_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
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struct drm_plane *primary, struct drm_plane *cursor)
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{
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struct drm_crtc *crtc = &mixer->drm_crtc;
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int res;
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res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
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&sti_crtc_funcs, NULL);
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if (res) {
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DRM_ERROR("Can't initialize CRTC\n");
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
|
||
|
|
|
||
|
|
DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
|
||
|
|
crtc->base.id, sti_mixer_to_str(mixer));
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|