forked from Minki/linux
949f08862d
Many drivers (21 to be exact) create connectors that are always connected (for instance to an LVDS or DSI panel). Instead of forcing them to implement a dummy .detect() handler, make the callback optional and consider the connector as always connected in that case. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Jyri Sarha <jsarha@ti.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Vincent Abriou <vincent.abriou@st.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> [seanpaul fixed small conflict in rcar-du/rcar_du_lvdscon.c] Signed-off-by: Sean Paul <seanpaul@chromium.org>
119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
/*
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* rcar_du_lvdscon.c -- R-Car Display Unit LVDS Connector
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*
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* Copyright (C) 2013-2014 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 <video/display_timing.h>
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#include <video/of_display_timing.h>
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#include <video/videomode.h>
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#include "rcar_du_drv.h"
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#include "rcar_du_encoder.h"
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#include "rcar_du_kms.h"
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#include "rcar_du_lvdscon.h"
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struct rcar_du_lvds_connector {
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struct rcar_du_connector connector;
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struct {
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unsigned int width_mm; /* Panel width in mm */
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unsigned int height_mm; /* Panel height in mm */
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struct videomode mode;
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} panel;
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};
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#define to_rcar_lvds_connector(c) \
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container_of(c, struct rcar_du_lvds_connector, connector.connector)
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static int rcar_du_lvds_connector_get_modes(struct drm_connector *connector)
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{
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struct rcar_du_lvds_connector *lvdscon =
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to_rcar_lvds_connector(connector);
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struct drm_display_mode *mode;
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mode = drm_mode_create(connector->dev);
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if (mode == NULL)
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return 0;
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mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
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drm_display_mode_from_videomode(&lvdscon->panel.mode, mode);
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drm_mode_probed_add(connector, mode);
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return 1;
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}
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static const struct drm_connector_helper_funcs connector_helper_funcs = {
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.get_modes = rcar_du_lvds_connector_get_modes,
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};
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static const struct drm_connector_funcs connector_funcs = {
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.dpms = drm_atomic_helper_connector_dpms,
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.reset = drm_atomic_helper_connector_reset,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = drm_connector_cleanup,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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int rcar_du_lvds_connector_init(struct rcar_du_device *rcdu,
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struct rcar_du_encoder *renc,
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const struct device_node *np)
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{
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struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
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struct rcar_du_lvds_connector *lvdscon;
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struct drm_connector *connector;
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struct display_timing timing;
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int ret;
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lvdscon = devm_kzalloc(rcdu->dev, sizeof(*lvdscon), GFP_KERNEL);
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if (lvdscon == NULL)
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return -ENOMEM;
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ret = of_get_display_timing(np, "panel-timing", &timing);
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if (ret < 0)
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return ret;
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videomode_from_timing(&timing, &lvdscon->panel.mode);
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of_property_read_u32(np, "width-mm", &lvdscon->panel.width_mm);
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of_property_read_u32(np, "height-mm", &lvdscon->panel.height_mm);
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connector = &lvdscon->connector.connector;
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connector->display_info.width_mm = lvdscon->panel.width_mm;
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connector->display_info.height_mm = lvdscon->panel.height_mm;
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ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
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DRM_MODE_CONNECTOR_LVDS);
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if (ret < 0)
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return ret;
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drm_connector_helper_add(connector, &connector_helper_funcs);
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connector->dpms = DRM_MODE_DPMS_OFF;
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drm_object_property_set_value(&connector->base,
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rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
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ret = drm_mode_connector_attach_encoder(connector, encoder);
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if (ret < 0)
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return ret;
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lvdscon->connector.encoder = renc;
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return 0;
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}
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