![Tomi Valkeinen](/assets/img/avatar_default.png)
omap_encoder_update() assigns an overlay manager to dssdev->src->manager. This assignment is not needed, as the connections in the display chain have already been made at connect step. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
190 lines
4.9 KiB
C
190 lines
4.9 KiB
C
/*
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* drivers/gpu/drm/omapdrm/omap_encoder.c
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*
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* Copyright (C) 2011 Texas Instruments
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* Author: Rob Clark <rob@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/list.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 <drm/drm_edid.h>
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#include "omap_drv.h"
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/*
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* encoder funcs
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*/
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#define to_omap_encoder(x) container_of(x, struct omap_encoder, base)
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/* The encoder and connector both map to same dssdev.. the encoder
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* handles the 'active' parts, ie. anything the modifies the state
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* of the hw, and the connector handles the 'read-only' parts, like
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* detecting connection and reading edid.
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*/
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struct omap_encoder {
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struct drm_encoder base;
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struct omap_dss_device *dssdev;
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};
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struct omap_dss_device *omap_encoder_get_dssdev(struct drm_encoder *encoder)
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{
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struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
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return omap_encoder->dssdev;
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}
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static void omap_encoder_destroy(struct drm_encoder *encoder)
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{
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struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
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drm_encoder_cleanup(encoder);
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kfree(omap_encoder);
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}
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static const struct drm_encoder_funcs omap_encoder_funcs = {
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.destroy = omap_encoder_destroy,
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};
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static void omap_encoder_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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struct drm_device *dev = encoder->dev;
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struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
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struct omap_dss_device *dssdev = omap_encoder->dssdev;
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struct drm_connector *connector;
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bool hdmi_mode;
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int r;
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hdmi_mode = false;
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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if (connector->encoder == encoder) {
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hdmi_mode = omap_connector_get_hdmi_mode(connector);
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break;
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}
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}
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if (dssdev->driver->set_hdmi_mode)
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dssdev->driver->set_hdmi_mode(dssdev, hdmi_mode);
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if (hdmi_mode && dssdev->driver->set_hdmi_infoframe) {
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struct hdmi_avi_infoframe avi;
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r = drm_hdmi_avi_infoframe_from_display_mode(&avi, adjusted_mode);
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if (r == 0)
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dssdev->driver->set_hdmi_infoframe(dssdev, &avi);
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}
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}
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static void omap_encoder_disable(struct drm_encoder *encoder)
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{
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struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
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struct omap_dss_device *dssdev = omap_encoder->dssdev;
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struct omap_dss_driver *dssdrv = dssdev->driver;
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dssdrv->disable(dssdev);
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}
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static int omap_encoder_update(struct drm_encoder *encoder,
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enum omap_channel channel,
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struct omap_video_timings *timings)
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{
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struct drm_device *dev = encoder->dev;
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struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
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struct omap_dss_device *dssdev = omap_encoder->dssdev;
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struct omap_dss_driver *dssdrv = dssdev->driver;
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int ret;
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if (dssdrv->check_timings) {
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ret = dssdrv->check_timings(dssdev, timings);
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} else {
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struct omap_video_timings t = {0};
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dssdrv->get_timings(dssdev, &t);
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if (memcmp(timings, &t, sizeof(struct omap_video_timings)))
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ret = -EINVAL;
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else
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ret = 0;
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}
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if (ret) {
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dev_err(dev->dev, "could not set timings: %d\n", ret);
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return ret;
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}
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if (dssdrv->set_timings)
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dssdrv->set_timings(dssdev, timings);
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return 0;
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}
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static void omap_encoder_enable(struct drm_encoder *encoder)
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{
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struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
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struct omap_dss_device *dssdev = omap_encoder->dssdev;
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struct omap_dss_driver *dssdrv = dssdev->driver;
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omap_encoder_update(encoder, omap_crtc_channel(encoder->crtc),
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omap_crtc_timings(encoder->crtc));
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dssdrv->enable(dssdev);
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}
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static int omap_encoder_atomic_check(struct drm_encoder *encoder,
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struct drm_crtc_state *crtc_state,
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struct drm_connector_state *conn_state)
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{
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return 0;
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}
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static const struct drm_encoder_helper_funcs omap_encoder_helper_funcs = {
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.mode_set = omap_encoder_mode_set,
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.disable = omap_encoder_disable,
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.enable = omap_encoder_enable,
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.atomic_check = omap_encoder_atomic_check,
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};
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/* initialize encoder */
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struct drm_encoder *omap_encoder_init(struct drm_device *dev,
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struct omap_dss_device *dssdev)
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{
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struct drm_encoder *encoder = NULL;
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struct omap_encoder *omap_encoder;
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omap_encoder = kzalloc(sizeof(*omap_encoder), GFP_KERNEL);
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if (!omap_encoder)
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goto fail;
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omap_encoder->dssdev = dssdev;
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encoder = &omap_encoder->base;
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drm_encoder_init(dev, encoder, &omap_encoder_funcs,
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DRM_MODE_ENCODER_TMDS, NULL);
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drm_encoder_helper_add(encoder, &omap_encoder_helper_funcs);
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return encoder;
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fail:
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if (encoder)
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omap_encoder_destroy(encoder);
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return NULL;
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}
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