Release 4.7 drivers/gpu/drm/rcar-du/rcar_du_lvdscon.c
/*
* rcar_du_lvdscon.c -- R-Car Display Unit LVDS Connector
*
* Copyright (C) 2013-2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* 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.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <video/display_timing.h>
#include <video/of_display_timing.h>
#include <video/videomode.h>
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
#include "rcar_du_kms.h"
#include "rcar_du_lvdscon.h"
struct rcar_du_lvds_connector {
struct rcar_du_connector connector;
struct {
unsigned int width_mm; /* Panel width in mm */
unsigned int height_mm; /* Panel height in mm */
struct videomode mode;
}
panel;
};
#define to_rcar_lvds_connector(c) \
container_of(c, struct rcar_du_lvds_connector, connector.connector)
static int rcar_du_lvds_connector_get_modes(struct drm_connector *connector)
{
struct rcar_du_lvds_connector *lvdscon =
to_rcar_lvds_connector(connector);
struct drm_display_mode *mode;
mode = drm_mode_create(connector->dev);
if (mode == NULL)
return 0;
mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
drm_display_mode_from_videomode(&lvdscon->panel.mode, mode);
drm_mode_probed_add(connector, mode);
return 1;
}
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static const struct drm_connector_helper_funcs connector_helper_funcs = {
.get_modes = rcar_du_lvds_connector_get_modes,
.best_encoder = rcar_du_connector_best_encoder,
};
static enum drm_connector_status
rcar_du_lvds_connector_detect(struct drm_connector *connector, bool force)
{
return connector_status_connected;
}
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static const struct drm_connector_funcs connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.reset = drm_atomic_helper_connector_reset,
.detect = rcar_du_lvds_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
int rcar_du_lvds_connector_init(struct rcar_du_device *rcdu,
struct rcar_du_encoder *renc,
/* TODO const */ struct device_node *np)
{
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
struct rcar_du_lvds_connector *lvdscon;
struct drm_connector *connector;
struct display_timing timing;
int ret;
lvdscon = devm_kzalloc(rcdu->dev, sizeof(*lvdscon), GFP_KERNEL);
if (lvdscon == NULL)
return -ENOMEM;
ret = of_get_display_timing(np, "panel-timing", &timing);
if (ret < 0)
return ret;
videomode_from_timing(&timing, &lvdscon->panel.mode);
of_property_read_u32(np, "width-mm", &lvdscon->panel.width_mm);
of_property_read_u32(np, "height-mm", &lvdscon->panel.height_mm);
connector = &lvdscon->connector.connector;
connector->display_info.width_mm = lvdscon->panel.width_mm;
connector->display_info.height_mm = lvdscon->panel.height_mm;
ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
DRM_MODE_CONNECTOR_LVDS);
if (ret < 0)
return ret;
drm_connector_helper_add(connector, &connector_helper_funcs);
connector->dpms = DRM_MODE_DPMS_OFF;
drm_object_property_set_value(&connector->base,
rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
ret = drm_mode_connector_attach_encoder(connector, encoder);
if (ret < 0)
return ret;
lvdscon->connector.encoder = renc;
return 0;
}
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