nv04_display.c

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/*
 * Copyright 2009 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Author: Ben Skeggs
 */

#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>

#include "nouveau_drm.h"
#include "nouveau_reg.h"
#include "nouveau_hw.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"

int
nv04_display_early_init(struct drm_device *dev)
{
    /* ensure vblank interrupts are off, they can't be enabled until
     * drm_vblank has been initialised
     */
    NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
    if (nv_two_heads(dev))
        NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);

    return 0;
}

void
nv04_display_late_takedown(struct drm_device *dev)
{
}

int
nv04_display_create(struct drm_device *dev)
{
    struct nouveau_drm *drm = nouveau_drm(dev);
    struct dcb_table *dcb = &drm->vbios.dcb;
    struct drm_connector *connector, *ct;
    struct drm_encoder *encoder;
    struct drm_crtc *crtc;
    struct nv04_display *disp;
    int i, ret;

    NV_DEBUG(drm, "\n");

    disp = kzalloc(sizeof(*disp), GFP_KERNEL);
    if (!disp)
        return -ENOMEM;

    nouveau_display(dev)->priv = disp;
    nouveau_display(dev)->dtor = nv04_display_destroy;
    nouveau_display(dev)->init = nv04_display_init;
    nouveau_display(dev)->fini = nv04_display_fini;

    nouveau_hw_save_vga_fonts(dev, 1);

    nv04_crtc_create(dev, 0);
    if (nv_two_heads(dev))
        nv04_crtc_create(dev, 1);

    for (i = 0; i < dcb->entries; i++) {
        struct dcb_output *dcbent = &dcb->entry[i];

        connector = nouveau_connector_create(dev, dcbent->connector);
        if (IS_ERR(connector))
            continue;

        switch (dcbent->type) {
        case DCB_OUTPUT_ANALOG:
            ret = nv04_dac_create(connector, dcbent);
            break;
        case DCB_OUTPUT_LVDS:
        case DCB_OUTPUT_TMDS:
            ret = nv04_dfp_create(connector, dcbent);
            break;
        case DCB_OUTPUT_TV:
            if (dcbent->location == DCB_LOC_ON_CHIP)
                ret = nv17_tv_create(connector, dcbent);
            else
                ret = nv04_tv_create(connector, dcbent);
            break;
        default:
            NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
            continue;
        }

        if (ret)
            continue;
    }

    list_for_each_entry_safe(connector, ct,
                 &dev->mode_config.connector_list, head) {
        if (!connector->encoder_ids[0]) {
            NV_WARN(drm, "%s has no encoders, removing\n",
                drm_get_connector_name(connector));
            connector->funcs->destroy(connector);
        }
    }

    /* Save previous state */
    list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
        crtc->funcs->save(crtc);

    list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
        struct drm_encoder_helper_funcs *func = encoder->helper_private;

        func->save(encoder);
    }

    return 0;
}

void
nv04_display_destroy(struct drm_device *dev)
{
    struct nouveau_drm *drm = nouveau_drm(dev);
    struct nv04_display *disp = nv04_display(dev);
    struct drm_encoder *encoder;
    struct drm_crtc *crtc;

    NV_DEBUG(drm, "\n");

    /* Turn every CRTC off. */
    list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
        struct drm_mode_set modeset = {
            .crtc = crtc,
        };

        crtc->funcs->set_config(&modeset);
    }

    /* Restore state */
    list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
        struct drm_encoder_helper_funcs *func = encoder->helper_private;

        func->restore(encoder);
    }

    list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
        crtc->funcs->restore(crtc);

    nouveau_hw_save_vga_fonts(dev, 0);

    nouveau_display(dev)->priv = NULL;
    kfree(disp);
}

int
nv04_display_init(struct drm_device *dev)
{
    struct drm_encoder *encoder;
    struct drm_crtc *crtc;

    /* meh.. modeset apparently doesn't setup all the regs and depends
     * on pre-existing state, for now load the state of the card *before*
     * nouveau was loaded, and then do a modeset.
     *
     * best thing to do probably is to make save/restore routines not
     * save/restore "pre-load" state, but more general so we can save
     * on suspend too.
     */
    list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
        struct drm_encoder_helper_funcs *func = encoder->helper_private;

        func->restore(encoder);
    }

    list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
        crtc->funcs->restore(crtc);

    return 0;
}

void
nv04_display_fini(struct drm_device *dev)
{
    /* disable vblank interrupts */
    NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
    if (nv_two_heads(dev))
        NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
}