LXR linux/drivers/gpu/drm/rcar-du/rcar_du

   1/*
   2 * rcar_du_vgacon.c  --  R-Car Display Unit VGA Connector
   3 *
   4 * Copyright (C) 2013-2014 Renesas Electronics Corporation
   5 *
   6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 */
  13
  14#include <drm/drmP.h>
  15#include <drm/drm_atomic_helper.h>
  16#include <drm/drm_crtc.h>
  17#include <drm/drm_crtc_helper.h>
  18
  19#include "rcar_du_drv.h"
  20#include "rcar_du_encoder.h"
  21#include "rcar_du_kms.h"
  22#include "rcar_du_vgacon.h"
  23
  24static int rcar_du_vga_connector_get_modes(struct drm_connector *connector)
  25{
  26        return 0;
  27}
  28
  29static const struct drm_connector_helper_funcs connector_helper_funcs = {
  30        .get_modes = rcar_du_vga_connector_get_modes,
  31};
  32
  33static enum drm_connector_status
  34rcar_du_vga_connector_detect(struct drm_connector *connector, bool force)
  35{
  36        return connector_status_connected;
  37}
  38
  39static const struct drm_connector_funcs connector_funcs = {
  40        .dpms = drm_atomic_helper_connector_dpms,
  41        .reset = drm_atomic_helper_connector_reset,
  42        .detect = rcar_du_vga_connector_detect,
  43        .fill_modes = drm_helper_probe_single_connector_modes,
  44        .destroy = drm_connector_cleanup,
  45        .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
  46        .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
  47};
  48
  49int rcar_du_vga_connector_init(struct rcar_du_device *rcdu,
  50                               struct rcar_du_encoder *renc)
  51{
  52        struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
  53        struct rcar_du_connector *rcon;
  54        struct drm_connector *connector;
  55        int ret;
  56
  57        rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
  58        if (rcon == NULL)
  59                return -ENOMEM;
  60
  61        connector = &rcon->connector;
  62        connector->display_info.width_mm = 0;
  63        connector->display_info.height_mm = 0;
  64        connector->interlace_allowed = true;
  65
  66        ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
  67                                 DRM_MODE_CONNECTOR_VGA);
  68        if (ret < 0)
  69                return ret;
  70
  71        drm_connector_helper_add(connector, &connector_helper_funcs);
  72
  73        connector->dpms = DRM_MODE_DPMS_OFF;
  74        drm_object_property_set_value(&connector->base,
  75                rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
  76
  77        ret = drm_mode_connector_attach_encoder(connector, encoder);
  78        if (ret < 0)
  79                return ret;
  80
  81        return 0;
  82}
  83