diff options
Diffstat (limited to 'drivers/gpu/drm/meson/meson_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/meson/meson_crtc.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c new file mode 100644 index 000000000000..749770e5c65f --- /dev/null +++ b/drivers/gpu/drm/meson/meson_crtc.c @@ -0,0 +1,208 @@ +/* + * Copyright (C) 2016 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + * Copyright (C) 2015 Amlogic, Inc. All rights reserved. + * Copyright (C) 2014 Endless Mobile + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * 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 <http://www.gnu.org/licenses/>. + * + * Written by: + * Jasper St. Pierre <jstpierre@mecheye.net> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <drm/drmP.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_flip_work.h> +#include <drm/drm_crtc_helper.h> + +#include "meson_crtc.h" +#include "meson_plane.h" +#include "meson_vpp.h" +#include "meson_viu.h" +#include "meson_registers.h" + +/* CRTC definition */ + +struct meson_crtc { + struct drm_crtc base; + struct drm_pending_vblank_event *event; + struct meson_drm *priv; +}; +#define to_meson_crtc(x) container_of(x, struct meson_crtc, base) + +/* CRTC */ + +static const struct drm_crtc_funcs meson_crtc_funcs = { + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, + .destroy = drm_crtc_cleanup, + .page_flip = drm_atomic_helper_page_flip, + .reset = drm_atomic_helper_crtc_reset, + .set_config = drm_atomic_helper_set_config, +}; + +static void meson_crtc_enable(struct drm_crtc *crtc) +{ + struct meson_crtc *meson_crtc = to_meson_crtc(crtc); + struct drm_plane *plane = meson_crtc->priv->primary_plane; + struct meson_drm *priv = meson_crtc->priv; + + /* Enable VPP Postblend */ + writel(plane->state->crtc_w, + priv->io_base + _REG(VPP_POSTBLEND_H_SIZE)); + + writel_bits_relaxed(VPP_POSTBLEND_ENABLE, VPP_POSTBLEND_ENABLE, + priv->io_base + _REG(VPP_MISC)); + + priv->viu.osd1_enabled = true; +} + +static void meson_crtc_disable(struct drm_crtc *crtc) +{ + struct meson_crtc *meson_crtc = to_meson_crtc(crtc); + struct meson_drm *priv = meson_crtc->priv; + + priv->viu.osd1_enabled = false; + + /* Disable VPP Postblend */ + writel_bits_relaxed(VPP_POSTBLEND_ENABLE, 0, + priv->io_base + _REG(VPP_MISC)); + + if (crtc->state->event && !crtc->state->active) { + spin_lock_irq(&crtc->dev->event_lock); + drm_crtc_send_vblank_event(crtc, crtc->state->event); + spin_unlock_irq(&crtc->dev->event_lock); + + crtc->state->event = NULL; + } +} + +static void meson_crtc_atomic_begin(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + struct meson_crtc *meson_crtc = to_meson_crtc(crtc); + unsigned long flags; + + if (crtc->state->event) { + WARN_ON(drm_crtc_vblank_get(crtc) != 0); + + spin_lock_irqsave(&crtc->dev->event_lock, flags); + meson_crtc->event = crtc->state->event; + spin_unlock_irqrestore(&crtc->dev->event_lock, flags); + crtc->state->event = NULL; + } +} + +static void meson_crtc_atomic_flush(struct drm_crtc *crtc, + struct drm_crtc_state *old_crtc_state) +{ + struct meson_crtc *meson_crtc = to_meson_crtc(crtc); + struct meson_drm *priv = meson_crtc->priv; + + if (priv->viu.osd1_enabled) + priv->viu.osd1_commit = true; +} + +static const struct drm_crtc_helper_funcs meson_crtc_helper_funcs = { + .enable = meson_crtc_enable, + .disable = meson_crtc_disable, + .atomic_begin = meson_crtc_atomic_begin, + .atomic_flush = meson_crtc_atomic_flush, +}; + +void meson_crtc_irq(struct meson_drm *priv) +{ + struct meson_crtc *meson_crtc = to_meson_crtc(priv->crtc); + unsigned long flags; + + /* Update the OSD registers */ + if (priv->viu.osd1_enabled && priv->viu.osd1_commit) { + writel_relaxed(priv->viu.osd1_ctrl_stat, + priv->io_base + _REG(VIU_OSD1_CTRL_STAT)); + writel_relaxed(priv->viu.osd1_blk0_cfg[0], + priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W0)); + writel_relaxed(priv->viu.osd1_blk0_cfg[1], + priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W1)); + writel_relaxed(priv->viu.osd1_blk0_cfg[2], + priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W2)); + writel_relaxed(priv->viu.osd1_blk0_cfg[3], + priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W3)); + writel_relaxed(priv->viu.osd1_blk0_cfg[4], + priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W4)); + + /* If output is interlace, make use of the Scaler */ + if (priv->viu.osd1_interlace) { + struct drm_plane *plane = priv->primary_plane; + struct drm_plane_state *state = plane->state; + struct drm_rect dest = { + .x1 = state->crtc_x, + .y1 = state->crtc_y, + .x2 = state->crtc_x + state->crtc_w, + .y2 = state->crtc_y + state->crtc_h, + }; + + meson_vpp_setup_interlace_vscaler_osd1(priv, &dest); + } else + meson_vpp_disable_interlace_vscaler_osd1(priv); + + /* Enable OSD1 */ + writel_bits_relaxed(VPP_OSD1_POSTBLEND, VPP_OSD1_POSTBLEND, + priv->io_base + _REG(VPP_MISC)); + + priv->viu.osd1_commit = false; + } + + drm_crtc_handle_vblank(priv->crtc); + + spin_lock_irqsave(&priv->drm->event_lock, flags); + if (meson_crtc->event) { + drm_crtc_send_vblank_event(priv->crtc, meson_crtc->event); + drm_crtc_vblank_put(priv->crtc); + meson_crtc->event = NULL; + } + spin_unlock_irqrestore(&priv->drm->event_lock, flags); +} + +int meson_crtc_create(struct meson_drm *priv) +{ + struct meson_crtc *meson_crtc; + struct drm_crtc *crtc; + int ret; + + meson_crtc = devm_kzalloc(priv->drm->dev, sizeof(*meson_crtc), + GFP_KERNEL); + if (!meson_crtc) + return -ENOMEM; + + meson_crtc->priv = priv; + crtc = &meson_crtc->base; + ret = drm_crtc_init_with_planes(priv->drm, crtc, + priv->primary_plane, NULL, + &meson_crtc_funcs, "meson_crtc"); + if (ret) { + dev_err(priv->drm->dev, "Failed to init CRTC\n"); + return ret; + } + + drm_crtc_helper_add(crtc, &meson_crtc_helper_funcs); + + priv->crtc = crtc; + + return 0; +} |