![Dave Airlie](/assets/img/avatar_default.png)
-----BEGIN PGP SIGNATURE----- iQEcBAABAgAGBQJauCZfAAoJEHm+PkMAQRiGWGUH/2rhdQDkoJpYWnjaQkolECG8 MxpGE7nmIIHxQcbSDdHTGJ8IhVm6Z5wZ7ym/PwCDTT043Y1y341sJrIwL2/nTG6d HVidk8hFvgN6QzlzVAHT3ZZMII/V9Zt+VV5SUYLGnPAVuJNHo/6uzWlTU5g+NTFo IquFDdQUaGBlkKqby+NoAFnkV1UAIkW0g22cfvPnlO5GMer0gusGyVNvVp7TNj3C sqj4Hvt3RMDLMNe9RZ2pFTiOD096n8FWpYftZneUTxFImhRV3Jg5MaaYZm9SI3HW tXrv/LChT/F1mi5Pkx6tkT5Hr8WvcrwDMJ4It1kom10RqWAgjxIR3CMm448ileY= =YKUG -----END PGP SIGNATURE----- Backmerge tag 'v4.16-rc7' into drm-next Linux 4.16-rc7 This was requested by Daniel, and things were getting a bit hard to reconcile, most of the conflicts were trivial though.
254 lines
6.6 KiB
C
254 lines
6.6 KiB
C
/*
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* Copyright (C) 2015 Free Electrons
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* Copyright (C) 2015 NextThing Co
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*
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* Maxime Ripard <maxime.ripard@free-electrons.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_modes.h>
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#include <linux/clk-provider.h>
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#include <linux/ioport.h>
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#include <linux/of_address.h>
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#include <linux/of_graph.h>
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#include <linux/of_irq.h>
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#include <linux/regmap.h>
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#include <video/videomode.h>
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#include "sun4i_backend.h"
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#include "sun4i_crtc.h"
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#include "sun4i_drv.h"
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#include "sunxi_engine.h"
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#include "sun4i_tcon.h"
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/*
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* While this isn't really working in the DRM theory, in practice we
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* can only ever have one encoder per TCON since we have a mux in our
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* TCON.
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*/
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static struct drm_encoder *sun4i_crtc_get_encoder(struct drm_crtc *crtc)
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{
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struct drm_encoder *encoder;
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drm_for_each_encoder(encoder, crtc->dev)
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if (encoder->crtc == crtc)
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return encoder;
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return NULL;
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}
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static int sun4i_crtc_atomic_check(struct drm_crtc *crtc,
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struct drm_crtc_state *state)
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{
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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struct sunxi_engine *engine = scrtc->engine;
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int ret = 0;
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if (engine && engine->ops && engine->ops->atomic_check)
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ret = engine->ops->atomic_check(engine, state);
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return ret;
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}
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static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc,
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struct drm_crtc_state *old_state)
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{
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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struct drm_device *dev = crtc->dev;
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struct sunxi_engine *engine = scrtc->engine;
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unsigned long flags;
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if (crtc->state->event) {
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WARN_ON(drm_crtc_vblank_get(crtc) != 0);
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spin_lock_irqsave(&dev->event_lock, flags);
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scrtc->event = crtc->state->event;
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spin_unlock_irqrestore(&dev->event_lock, flags);
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crtc->state->event = NULL;
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}
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if (engine->ops->atomic_begin)
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engine->ops->atomic_begin(engine, old_state);
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}
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static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
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struct drm_crtc_state *old_state)
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{
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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struct drm_pending_vblank_event *event = crtc->state->event;
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DRM_DEBUG_DRIVER("Committing plane changes\n");
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sunxi_engine_commit(scrtc->engine);
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if (event) {
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crtc->state->event = NULL;
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spin_lock_irq(&crtc->dev->event_lock);
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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_irq(&crtc->dev->event_lock);
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}
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}
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static void sun4i_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 drm_encoder *encoder = sun4i_crtc_get_encoder(crtc);
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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DRM_DEBUG_DRIVER("Disabling the CRTC\n");
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drm_crtc_vblank_off(crtc);
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sun4i_tcon_set_status(scrtc->tcon, encoder, false);
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if (crtc->state->event && !crtc->state->active) {
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spin_lock_irq(&crtc->dev->event_lock);
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drm_crtc_send_vblank_event(crtc, crtc->state->event);
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spin_unlock_irq(&crtc->dev->event_lock);
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crtc->state->event = NULL;
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}
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}
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static void sun4i_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 drm_encoder *encoder = sun4i_crtc_get_encoder(crtc);
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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DRM_DEBUG_DRIVER("Enabling the CRTC\n");
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sun4i_tcon_set_status(scrtc->tcon, encoder, true);
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drm_crtc_vblank_on(crtc);
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}
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static void sun4i_crtc_mode_set_nofb(struct drm_crtc *crtc)
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{
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struct drm_display_mode *mode = &crtc->state->adjusted_mode;
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struct drm_encoder *encoder = sun4i_crtc_get_encoder(crtc);
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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sun4i_tcon_mode_set(scrtc->tcon, encoder, mode);
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}
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static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
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.atomic_check = sun4i_crtc_atomic_check,
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.atomic_begin = sun4i_crtc_atomic_begin,
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.atomic_flush = sun4i_crtc_atomic_flush,
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.atomic_enable = sun4i_crtc_atomic_enable,
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.atomic_disable = sun4i_crtc_atomic_disable,
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.mode_set_nofb = sun4i_crtc_mode_set_nofb,
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};
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static int sun4i_crtc_enable_vblank(struct drm_crtc *crtc)
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{
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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DRM_DEBUG_DRIVER("Enabling VBLANK on crtc %p\n", crtc);
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sun4i_tcon_enable_vblank(scrtc->tcon, true);
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return 0;
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}
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static void sun4i_crtc_disable_vblank(struct drm_crtc *crtc)
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{
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struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
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DRM_DEBUG_DRIVER("Disabling VBLANK on crtc %p\n", crtc);
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sun4i_tcon_enable_vblank(scrtc->tcon, false);
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}
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static const struct drm_crtc_funcs sun4i_crtc_funcs = {
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.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
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.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
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.destroy = drm_crtc_cleanup,
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.page_flip = drm_atomic_helper_page_flip,
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.reset = drm_atomic_helper_crtc_reset,
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.set_config = drm_atomic_helper_set_config,
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.enable_vblank = sun4i_crtc_enable_vblank,
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.disable_vblank = sun4i_crtc_disable_vblank,
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};
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struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
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struct sunxi_engine *engine,
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struct sun4i_tcon *tcon)
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{
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struct sun4i_crtc *scrtc;
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struct drm_plane **planes;
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struct drm_plane *primary = NULL, *cursor = NULL;
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int ret, i;
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scrtc = devm_kzalloc(drm->dev, sizeof(*scrtc), GFP_KERNEL);
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if (!scrtc)
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return ERR_PTR(-ENOMEM);
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scrtc->engine = engine;
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scrtc->tcon = tcon;
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/* Create our layers */
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planes = sunxi_engine_layers_init(drm, engine);
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if (IS_ERR(planes)) {
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dev_err(drm->dev, "Couldn't create the planes\n");
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return NULL;
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}
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/* find primary and cursor planes for drm_crtc_init_with_planes */
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for (i = 0; planes[i]; i++) {
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struct drm_plane *plane = planes[i];
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switch (plane->type) {
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case DRM_PLANE_TYPE_PRIMARY:
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primary = plane;
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break;
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case DRM_PLANE_TYPE_CURSOR:
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cursor = plane;
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break;
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default:
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break;
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}
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}
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ret = drm_crtc_init_with_planes(drm, &scrtc->crtc,
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primary,
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cursor,
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&sun4i_crtc_funcs,
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NULL);
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if (ret) {
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dev_err(drm->dev, "Couldn't init DRM CRTC\n");
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return ERR_PTR(ret);
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}
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drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs);
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/* Set crtc.port to output port node of the tcon */
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scrtc->crtc.port = of_graph_get_port_by_id(scrtc->tcon->dev->of_node,
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1);
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/* Set possible_crtcs to this crtc for overlay planes */
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for (i = 0; planes[i]; i++) {
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uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
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struct drm_plane *plane = planes[i];
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if (plane->type == DRM_PLANE_TYPE_OVERLAY)
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plane->possible_crtcs = possible_crtcs;
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}
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return scrtc;
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}
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