![Andrew F. Davis](/assets/img/avatar_default.png)
Having the filename in the header serves little purpose and is often wrong after renames as it is here in several places, just drop it from all omapdrm files. While we are here unify the copyright tags to the TI recommended style. Signed-off-by: Andrew F. Davis <afd@ti.com>
194 lines
5 KiB
C
194 lines
5 KiB
C
/*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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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false);
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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 videomode *vm)
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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, vm);
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} else {
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struct videomode t = {0};
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dssdrv->get_timings(dssdev, &t);
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if (memcmp(vm, &t, sizeof(*vm)))
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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, vm);
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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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int r;
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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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r = dssdrv->enable(dssdev);
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if (r)
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dev_err(encoder->dev->dev,
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"Failed to enable display '%s': %d\n",
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dssdev->name, r);
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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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