![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>
291 lines
7.9 KiB
C
291 lines
7.9 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 <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 "omap_drv.h"
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/*
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* connector funcs
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*/
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#define to_omap_connector(x) container_of(x, struct omap_connector, base)
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struct omap_connector {
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struct drm_connector base;
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struct omap_dss_device *dssdev;
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bool hdmi_mode;
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};
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static void omap_connector_hpd_cb(void *cb_data,
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enum drm_connector_status status)
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{
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struct omap_connector *omap_connector = cb_data;
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struct drm_connector *connector = &omap_connector->base;
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struct drm_device *dev = connector->dev;
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enum drm_connector_status old_status;
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mutex_lock(&dev->mode_config.mutex);
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old_status = connector->status;
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connector->status = status;
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mutex_unlock(&dev->mode_config.mutex);
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if (old_status != status)
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drm_kms_helper_hotplug_event(dev);
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}
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bool omap_connector_get_hdmi_mode(struct drm_connector *connector)
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{
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struct omap_connector *omap_connector = to_omap_connector(connector);
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return omap_connector->hdmi_mode;
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}
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static enum drm_connector_status omap_connector_detect(
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struct drm_connector *connector, bool force)
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{
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struct omap_connector *omap_connector = to_omap_connector(connector);
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struct omap_dss_device *dssdev = omap_connector->dssdev;
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struct omap_dss_driver *dssdrv = dssdev->driver;
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enum drm_connector_status ret;
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if (dssdrv->detect) {
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if (dssdrv->detect(dssdev))
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ret = connector_status_connected;
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else
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ret = connector_status_disconnected;
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} else if (dssdev->type == OMAP_DISPLAY_TYPE_DPI ||
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dssdev->type == OMAP_DISPLAY_TYPE_DBI ||
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dssdev->type == OMAP_DISPLAY_TYPE_SDI ||
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dssdev->type == OMAP_DISPLAY_TYPE_DSI) {
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ret = connector_status_connected;
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} else {
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ret = connector_status_unknown;
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}
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VERB("%s: %d (force=%d)", omap_connector->dssdev->name, ret, force);
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return ret;
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}
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static void omap_connector_destroy(struct drm_connector *connector)
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{
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struct omap_connector *omap_connector = to_omap_connector(connector);
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struct omap_dss_device *dssdev = omap_connector->dssdev;
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DBG("%s", omap_connector->dssdev->name);
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if (connector->polled == DRM_CONNECTOR_POLL_HPD &&
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dssdev->driver->unregister_hpd_cb) {
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dssdev->driver->unregister_hpd_cb(dssdev);
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}
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drm_connector_unregister(connector);
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drm_connector_cleanup(connector);
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kfree(omap_connector);
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omap_dss_put_device(dssdev);
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}
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#define MAX_EDID 512
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static int omap_connector_get_modes(struct drm_connector *connector)
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{
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struct omap_connector *omap_connector = to_omap_connector(connector);
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struct omap_dss_device *dssdev = omap_connector->dssdev;
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struct omap_dss_driver *dssdrv = dssdev->driver;
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struct drm_device *dev = connector->dev;
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int n = 0;
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DBG("%s", omap_connector->dssdev->name);
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/* if display exposes EDID, then we parse that in the normal way to
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* build table of supported modes.. otherwise (ie. fixed resolution
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* LCD panels) we just return a single mode corresponding to the
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* currently configured timings:
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*/
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if (dssdrv->read_edid) {
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void *edid = kzalloc(MAX_EDID, GFP_KERNEL);
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if ((dssdrv->read_edid(dssdev, edid, MAX_EDID) > 0) &&
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drm_edid_is_valid(edid)) {
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drm_mode_connector_update_edid_property(
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connector, edid);
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n = drm_add_edid_modes(connector, edid);
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omap_connector->hdmi_mode =
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drm_detect_hdmi_monitor(edid);
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} else {
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drm_mode_connector_update_edid_property(
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connector, NULL);
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}
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kfree(edid);
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} else {
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struct drm_display_mode *mode = drm_mode_create(dev);
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struct videomode vm = {0};
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dssdrv->get_timings(dssdev, &vm);
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drm_display_mode_from_videomode(&vm, mode);
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mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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drm_mode_set_name(mode);
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drm_mode_probed_add(connector, mode);
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if (dssdrv->get_size) {
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dssdrv->get_size(dssdev,
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&connector->display_info.width_mm,
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&connector->display_info.height_mm);
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}
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n = 1;
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}
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return n;
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}
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static int omap_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct omap_connector *omap_connector = to_omap_connector(connector);
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struct omap_dss_device *dssdev = omap_connector->dssdev;
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struct omap_dss_driver *dssdrv = dssdev->driver;
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struct videomode vm = {0};
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struct drm_device *dev = connector->dev;
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struct drm_display_mode *new_mode;
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int r, ret = MODE_BAD;
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drm_display_mode_to_videomode(mode, &vm);
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mode->vrefresh = drm_mode_vrefresh(mode);
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/*
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* if the panel driver doesn't have a check_timings, it's most likely
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* a fixed resolution panel, check if the timings match with the
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* panel's timings
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*/
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if (dssdrv->check_timings) {
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r = 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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/*
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* Ignore the flags, as we don't get them from
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* drm_display_mode_to_videomode.
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*/
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t.flags = 0;
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if (memcmp(&vm, &t, sizeof(vm)))
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r = -EINVAL;
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else
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r = 0;
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}
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if (!r) {
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/* check if vrefresh is still valid */
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new_mode = drm_mode_duplicate(dev, mode);
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new_mode->clock = vm.pixelclock / 1000;
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new_mode->vrefresh = 0;
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if (mode->vrefresh == drm_mode_vrefresh(new_mode))
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ret = MODE_OK;
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drm_mode_destroy(dev, new_mode);
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}
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DBG("connector: mode %s: "
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"%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
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(ret == MODE_OK) ? "valid" : "invalid",
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mode->base.id, mode->name, mode->vrefresh, mode->clock,
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mode->hdisplay, mode->hsync_start,
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mode->hsync_end, mode->htotal,
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mode->vdisplay, mode->vsync_start,
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mode->vsync_end, mode->vtotal, mode->type, mode->flags);
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return ret;
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}
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static const struct drm_connector_funcs omap_connector_funcs = {
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.reset = drm_atomic_helper_connector_reset,
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.detect = omap_connector_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = omap_connector_destroy,
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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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static const struct drm_connector_helper_funcs omap_connector_helper_funcs = {
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.get_modes = omap_connector_get_modes,
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.mode_valid = omap_connector_mode_valid,
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};
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/* initialize connector */
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struct drm_connector *omap_connector_init(struct drm_device *dev,
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int connector_type, struct omap_dss_device *dssdev,
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struct drm_encoder *encoder)
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{
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struct drm_connector *connector = NULL;
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struct omap_connector *omap_connector;
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bool hpd_supported = false;
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DBG("%s", dssdev->name);
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omap_dss_get_device(dssdev);
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omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL);
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if (!omap_connector)
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goto fail;
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omap_connector->dssdev = dssdev;
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connector = &omap_connector->base;
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drm_connector_init(dev, connector, &omap_connector_funcs,
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connector_type);
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drm_connector_helper_add(connector, &omap_connector_helper_funcs);
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if (dssdev->driver->register_hpd_cb) {
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int ret = dssdev->driver->register_hpd_cb(dssdev,
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omap_connector_hpd_cb,
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omap_connector);
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if (!ret)
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hpd_supported = true;
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else if (ret != -ENOTSUPP)
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DBG("%s: Failed to register HPD callback (%d).",
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dssdev->name, ret);
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}
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if (hpd_supported)
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connector->polled = DRM_CONNECTOR_POLL_HPD;
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else if (dssdev->driver->detect)
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connector->polled = DRM_CONNECTOR_POLL_CONNECT |
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DRM_CONNECTOR_POLL_DISCONNECT;
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else
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connector->polled = 0;
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connector->interlace_allowed = 1;
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connector->doublescan_allowed = 0;
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return connector;
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fail:
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if (connector)
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omap_connector_destroy(connector);
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return NULL;
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}
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