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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/sti/sti_crtc.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/sti/sti_crtc.c')
-rw-r--r--drivers/gpu/drm/sti/sti_crtc.c368
1 files changed, 368 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sti/sti_crtc.c b/drivers/gpu/drm/sti/sti_crtc.c
new file mode 100644
index 000000000..3c7154f2d
--- /dev/null
+++ b/drivers/gpu/drm/sti/sti_crtc.c
@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ * Fabien Dessenne <fabien.dessenne@st.com>
+ * for STMicroelectronics.
+ */
+
+#include <linux/clk.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_device.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "sti_compositor.h"
+#include "sti_crtc.h"
+#include "sti_drv.h"
+#include "sti_vid.h"
+#include "sti_vtg.h"
+
+static void sti_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+
+ DRM_DEBUG_DRIVER("\n");
+
+ mixer->status = STI_MIXER_READY;
+
+ drm_crtc_vblank_on(crtc);
+}
+
+static void sti_crtc_atomic_disable(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+
+ DRM_DEBUG_DRIVER("\n");
+
+ mixer->status = STI_MIXER_DISABLING;
+
+ drm_crtc_wait_one_vblank(crtc);
+}
+
+static int
+sti_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct clk *compo_clk, *pix_clk;
+ int rate = mode->clock * 1000;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s) mode: (%s)\n",
+ crtc->base.id, sti_mixer_to_str(mixer), mode->name);
+
+ DRM_DEBUG_KMS(DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
+
+ if (mixer->id == STI_MIXER_MAIN) {
+ compo_clk = compo->clk_compo_main;
+ pix_clk = compo->clk_pix_main;
+ } else {
+ compo_clk = compo->clk_compo_aux;
+ pix_clk = compo->clk_pix_aux;
+ }
+
+ /* Prepare and enable the compo IP clock */
+ if (clk_prepare_enable(compo_clk)) {
+ DRM_INFO("Failed to prepare/enable compositor clk\n");
+ goto compo_error;
+ }
+
+ /* Set rate and prepare/enable pixel clock */
+ if (clk_set_rate(pix_clk, rate) < 0) {
+ DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
+ goto pix_error;
+ }
+ if (clk_prepare_enable(pix_clk)) {
+ DRM_ERROR("Failed to prepare/enable pix clk\n");
+ goto pix_error;
+ }
+
+ sti_vtg_set_config(compo->vtg[mixer->id], &crtc->mode);
+
+ if (sti_mixer_active_video_area(mixer, &crtc->mode)) {
+ DRM_ERROR("Can't set active video area\n");
+ goto mixer_error;
+ }
+
+ return 0;
+
+mixer_error:
+ clk_disable_unprepare(pix_clk);
+pix_error:
+ clk_disable_unprepare(compo_clk);
+compo_error:
+ return -EINVAL;
+}
+
+static void sti_crtc_disable(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+
+ DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
+
+ /* Disable Background */
+ sti_mixer_set_background_status(mixer, false);
+
+ drm_crtc_vblank_off(crtc);
+
+ /* Disable pixel clock and compo IP clocks */
+ if (mixer->id == STI_MIXER_MAIN) {
+ clk_disable_unprepare(compo->clk_pix_main);
+ clk_disable_unprepare(compo->clk_compo_main);
+ } else {
+ clk_disable_unprepare(compo->clk_pix_aux);
+ clk_disable_unprepare(compo->clk_compo_aux);
+ }
+
+ mixer->status = STI_MIXER_DISABLED;
+}
+
+static void
+sti_crtc_mode_set_nofb(struct drm_crtc *crtc)
+{
+ sti_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
+}
+
+static void sti_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ struct drm_device *drm_dev = crtc->dev;
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
+ struct drm_plane *p;
+ struct drm_pending_vblank_event *event;
+ unsigned long flags;
+
+ DRM_DEBUG_DRIVER("\n");
+
+ /* perform plane actions */
+ list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
+ struct sti_plane *plane = to_sti_plane(p);
+
+ switch (plane->status) {
+ case STI_PLANE_UPDATED:
+ /* ignore update for other CRTC */
+ if (p->state->crtc != crtc)
+ continue;
+
+ /* update planes tag as updated */
+ DRM_DEBUG_DRIVER("update plane %s\n",
+ sti_plane_to_str(plane));
+
+ if (sti_mixer_set_plane_depth(mixer, plane)) {
+ DRM_ERROR("Cannot set plane %s depth\n",
+ sti_plane_to_str(plane));
+ break;
+ }
+
+ if (sti_mixer_set_plane_status(mixer, plane, true)) {
+ DRM_ERROR("Cannot enable plane %s at mixer\n",
+ sti_plane_to_str(plane));
+ break;
+ }
+
+ /* if plane is HQVDP_0 then commit the vid[0] */
+ if (plane->desc == STI_HQVDP_0)
+ sti_vid_commit(compo->vid[0], p->state);
+
+ plane->status = STI_PLANE_READY;
+
+ break;
+ case STI_PLANE_DISABLING:
+ /* disabling sequence for planes tag as disabling */
+ DRM_DEBUG_DRIVER("disable plane %s from mixer\n",
+ sti_plane_to_str(plane));
+
+ if (sti_mixer_set_plane_status(mixer, plane, false)) {
+ DRM_ERROR("Cannot disable plane %s at mixer\n",
+ sti_plane_to_str(plane));
+ continue;
+ }
+
+ if (plane->desc == STI_CURSOR)
+ /* tag plane status for disabled */
+ plane->status = STI_PLANE_DISABLED;
+ else
+ /* tag plane status for flushing */
+ plane->status = STI_PLANE_FLUSHING;
+
+ /* if plane is HQVDP_0 then disable the vid[0] */
+ if (plane->desc == STI_HQVDP_0)
+ sti_vid_disable(compo->vid[0]);
+
+ break;
+ default:
+ /* Other status case are not handled */
+ break;
+ }
+ }
+
+ event = crtc->state->event;
+ if (event) {
+ crtc->state->event = NULL;
+
+ spin_lock_irqsave(&crtc->dev->event_lock, flags);
+ if (drm_crtc_vblank_get(crtc) == 0)
+ drm_crtc_arm_vblank_event(crtc, event);
+ else
+ drm_crtc_send_vblank_event(crtc, event);
+ spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+ }
+}
+
+static const struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
+ .mode_set_nofb = sti_crtc_mode_set_nofb,
+ .atomic_flush = sti_crtc_atomic_flush,
+ .atomic_enable = sti_crtc_atomic_enable,
+ .atomic_disable = sti_crtc_atomic_disable,
+};
+
+static void sti_crtc_destroy(struct drm_crtc *crtc)
+{
+ DRM_DEBUG_KMS("\n");
+ drm_crtc_cleanup(crtc);
+}
+
+static int sti_crtc_set_property(struct drm_crtc *crtc,
+ struct drm_property *property,
+ uint64_t val)
+{
+ DRM_DEBUG_KMS("\n");
+ return 0;
+}
+
+int sti_crtc_vblank_cb(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ struct sti_compositor *compo;
+ struct drm_crtc *crtc = data;
+ struct sti_mixer *mixer;
+ unsigned int pipe;
+
+ pipe = drm_crtc_index(crtc);
+ compo = container_of(nb, struct sti_compositor, vtg_vblank_nb[pipe]);
+ mixer = compo->mixer[pipe];
+
+ if ((event != VTG_TOP_FIELD_EVENT) &&
+ (event != VTG_BOTTOM_FIELD_EVENT)) {
+ DRM_ERROR("unknown event: %lu\n", event);
+ return -EINVAL;
+ }
+
+ drm_crtc_handle_vblank(crtc);
+
+ if (mixer->status == STI_MIXER_DISABLING) {
+ struct drm_plane *p;
+
+ /* Disable mixer only if all overlay planes (GDP and VDP)
+ * are disabled */
+ list_for_each_entry(p, &crtc->dev->mode_config.plane_list,
+ head) {
+ struct sti_plane *plane = to_sti_plane(p);
+
+ if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)
+ if (plane->status != STI_PLANE_DISABLED)
+ return 0;
+ }
+ sti_crtc_disable(crtc);
+ }
+
+ return 0;
+}
+
+static int sti_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ unsigned int pipe = crtc->index;
+ struct sti_private *dev_priv = dev->dev_private;
+ struct sti_compositor *compo = dev_priv->compo;
+ struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb[pipe];
+ struct sti_vtg *vtg = compo->vtg[pipe];
+
+ DRM_DEBUG_DRIVER("\n");
+
+ if (sti_vtg_register_client(vtg, vtg_vblank_nb, crtc)) {
+ DRM_ERROR("Cannot register VTG notifier\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void sti_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+ struct drm_device *drm_dev = crtc->dev;
+ unsigned int pipe = crtc->index;
+ struct sti_private *priv = drm_dev->dev_private;
+ struct sti_compositor *compo = priv->compo;
+ struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb[pipe];
+ struct sti_vtg *vtg = compo->vtg[pipe];
+
+ DRM_DEBUG_DRIVER("\n");
+
+ if (sti_vtg_unregister_client(vtg, vtg_vblank_nb))
+ DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
+}
+
+static int sti_crtc_late_register(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
+
+ if (drm_crtc_index(crtc) == 0)
+ sti_compositor_debugfs_init(compo, crtc->dev->primary);
+
+ return 0;
+}
+
+static const struct drm_crtc_funcs sti_crtc_funcs = {
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .destroy = sti_crtc_destroy,
+ .set_property = sti_crtc_set_property,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .late_register = sti_crtc_late_register,
+ .enable_vblank = sti_crtc_enable_vblank,
+ .disable_vblank = sti_crtc_disable_vblank,
+};
+
+bool sti_crtc_is_main(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+
+ if (mixer->id == STI_MIXER_MAIN)
+ return true;
+
+ return false;
+}
+
+int sti_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
+ struct drm_plane *primary, struct drm_plane *cursor)
+{
+ struct drm_crtc *crtc = &mixer->drm_crtc;
+ int res;
+
+ res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
+ &sti_crtc_funcs, NULL);
+ if (res) {
+ 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;
+}