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4bf8e1962f
The R-Car Display Unit (DU) DRM driver supports both superposition processors and all eight planes in RGB and YUV formats with alpha blending. Only VGA and LVDS encoders and connectors are currently supported. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
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* rcar_du_vga.c -- R-Car Display Unit VGA DAC and Connector
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*
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* Copyright (C) 2013 Renesas 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_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include "rcar_du_drv.h"
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#include "rcar_du_kms.h"
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#include "rcar_du_vga.h"
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/* -----------------------------------------------------------------------------
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* Connector
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*/
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static int rcar_du_vga_connector_get_modes(struct drm_connector *connector)
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{
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return 0;
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}
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static int rcar_du_vga_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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return MODE_OK;
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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_vga_connector_get_modes,
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.mode_valid = rcar_du_vga_connector_mode_valid,
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.best_encoder = rcar_du_connector_best_encoder,
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};
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static void rcar_du_vga_connector_destroy(struct drm_connector *connector)
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{
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drm_sysfs_connector_remove(connector);
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drm_connector_cleanup(connector);
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}
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static enum drm_connector_status
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rcar_du_vga_connector_detect(struct drm_connector *connector, bool force)
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{
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return connector_status_unknown;
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}
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static const struct drm_connector_funcs connector_funcs = {
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.dpms = drm_helper_connector_dpms,
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.detect = rcar_du_vga_connector_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = rcar_du_vga_connector_destroy,
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};
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static int rcar_du_vga_connector_init(struct rcar_du_device *rcdu,
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struct rcar_du_encoder *renc)
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{
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struct rcar_du_connector *rcon;
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struct drm_connector *connector;
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int ret;
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rcon = devm_kzalloc(rcdu->dev, sizeof(*rcon), GFP_KERNEL);
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if (rcon == NULL)
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return -ENOMEM;
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connector = &rcon->connector;
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connector->display_info.width_mm = 0;
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connector->display_info.height_mm = 0;
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ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
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DRM_MODE_CONNECTOR_VGA);
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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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ret = drm_sysfs_connector_add(connector);
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if (ret < 0)
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return ret;
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drm_helper_connector_dpms(connector, 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, &renc->encoder);
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if (ret < 0)
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return ret;
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connector->encoder = &renc->encoder;
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rcon->encoder = renc;
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return 0;
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}
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/* -----------------------------------------------------------------------------
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* Encoder
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*/
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static void rcar_du_vga_encoder_dpms(struct drm_encoder *encoder, int mode)
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{
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}
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static bool rcar_du_vga_encoder_mode_fixup(struct drm_encoder *encoder,
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const struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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return true;
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}
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static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
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.dpms = rcar_du_vga_encoder_dpms,
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.mode_fixup = rcar_du_vga_encoder_mode_fixup,
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.prepare = rcar_du_encoder_mode_prepare,
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.commit = rcar_du_encoder_mode_commit,
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.mode_set = rcar_du_encoder_mode_set,
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};
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static const struct drm_encoder_funcs encoder_funcs = {
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.destroy = drm_encoder_cleanup,
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};
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int rcar_du_vga_init(struct rcar_du_device *rcdu,
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const struct rcar_du_encoder_vga_data *data,
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unsigned int output)
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{
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struct rcar_du_encoder *renc;
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int ret;
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renc = devm_kzalloc(rcdu->dev, sizeof(*renc), GFP_KERNEL);
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if (renc == NULL)
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return -ENOMEM;
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renc->output = output;
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ret = drm_encoder_init(rcdu->ddev, &renc->encoder, &encoder_funcs,
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DRM_MODE_ENCODER_DAC);
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if (ret < 0)
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return ret;
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drm_encoder_helper_add(&renc->encoder, &encoder_helper_funcs);
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return rcar_du_vga_connector_init(rcdu, renc);
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}
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