mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
30b7176195
Hook up drm_panel support in the omapdrm driver. The change is relatively simply as the way has been paved by drm_bridge support already. In addition to looking up, attaching to and detaching from the panel, we only need to add panel support in the connector .get_modes() handler, take connector bus flags (set by the panel) into account, and enable/disable the panel in the encoder enable/disable operations handlers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
391 lines
10 KiB
C
391 lines
10 KiB
C
/*
|
|
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Author: Rob Clark <rob@ti.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published by
|
|
* the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_panel.h>
|
|
#include <drm/drm_probe_helper.h>
|
|
|
|
#include "omap_drv.h"
|
|
|
|
/*
|
|
* connector funcs
|
|
*/
|
|
|
|
#define to_omap_connector(x) container_of(x, struct omap_connector, base)
|
|
|
|
struct omap_connector {
|
|
struct drm_connector base;
|
|
struct omap_dss_device *output;
|
|
struct omap_dss_device *hpd;
|
|
bool hdmi_mode;
|
|
};
|
|
|
|
static void omap_connector_hpd_notify(struct drm_connector *connector,
|
|
enum drm_connector_status status)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
struct omap_dss_device *dssdev;
|
|
|
|
if (status != connector_status_disconnected)
|
|
return;
|
|
|
|
/*
|
|
* Notify all devics in the pipeline of disconnection. This is required
|
|
* to let the HDMI encoders reset their internal state related to
|
|
* connection status, such as the CEC address.
|
|
*/
|
|
for (dssdev = omap_connector->output; dssdev; dssdev = dssdev->next) {
|
|
if (dssdev->ops && dssdev->ops->hdmi.lost_hotplug)
|
|
dssdev->ops->hdmi.lost_hotplug(dssdev);
|
|
}
|
|
}
|
|
|
|
static void omap_connector_hpd_cb(void *cb_data,
|
|
enum drm_connector_status status)
|
|
{
|
|
struct omap_connector *omap_connector = cb_data;
|
|
struct drm_connector *connector = &omap_connector->base;
|
|
struct drm_device *dev = connector->dev;
|
|
enum drm_connector_status old_status;
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
old_status = connector->status;
|
|
connector->status = status;
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
if (old_status == status)
|
|
return;
|
|
|
|
omap_connector_hpd_notify(connector, status);
|
|
|
|
drm_kms_helper_hotplug_event(dev);
|
|
}
|
|
|
|
void omap_connector_enable_hpd(struct drm_connector *connector)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
struct omap_dss_device *hpd = omap_connector->hpd;
|
|
|
|
if (hpd)
|
|
hpd->ops->register_hpd_cb(hpd, omap_connector_hpd_cb,
|
|
omap_connector);
|
|
}
|
|
|
|
void omap_connector_disable_hpd(struct drm_connector *connector)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
struct omap_dss_device *hpd = omap_connector->hpd;
|
|
|
|
if (hpd)
|
|
hpd->ops->unregister_hpd_cb(hpd);
|
|
}
|
|
|
|
bool omap_connector_get_hdmi_mode(struct drm_connector *connector)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
|
|
return omap_connector->hdmi_mode;
|
|
}
|
|
|
|
static struct omap_dss_device *
|
|
omap_connector_find_device(struct drm_connector *connector,
|
|
enum omap_dss_device_ops_flag op)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
struct omap_dss_device *dssdev = NULL;
|
|
struct omap_dss_device *d;
|
|
|
|
for (d = omap_connector->output; d; d = d->next) {
|
|
if (d->ops_flags & op)
|
|
dssdev = d;
|
|
}
|
|
|
|
return dssdev;
|
|
}
|
|
|
|
static enum drm_connector_status omap_connector_detect(
|
|
struct drm_connector *connector, bool force)
|
|
{
|
|
struct omap_dss_device *dssdev;
|
|
enum drm_connector_status status;
|
|
|
|
dssdev = omap_connector_find_device(connector,
|
|
OMAP_DSS_DEVICE_OP_DETECT);
|
|
|
|
if (dssdev) {
|
|
status = dssdev->ops->detect(dssdev)
|
|
? connector_status_connected
|
|
: connector_status_disconnected;
|
|
|
|
omap_connector_hpd_notify(connector, status);
|
|
} else {
|
|
switch (connector->connector_type) {
|
|
case DRM_MODE_CONNECTOR_DPI:
|
|
case DRM_MODE_CONNECTOR_LVDS:
|
|
case DRM_MODE_CONNECTOR_DSI:
|
|
status = connector_status_connected;
|
|
break;
|
|
default:
|
|
status = connector_status_unknown;
|
|
break;
|
|
}
|
|
}
|
|
|
|
VERB("%s: %d (force=%d)", connector->name, status, force);
|
|
|
|
return status;
|
|
}
|
|
|
|
static void omap_connector_destroy(struct drm_connector *connector)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
|
|
DBG("%s", connector->name);
|
|
|
|
if (omap_connector->hpd) {
|
|
struct omap_dss_device *hpd = omap_connector->hpd;
|
|
|
|
hpd->ops->unregister_hpd_cb(hpd);
|
|
omapdss_device_put(hpd);
|
|
omap_connector->hpd = NULL;
|
|
}
|
|
|
|
drm_connector_unregister(connector);
|
|
drm_connector_cleanup(connector);
|
|
|
|
omapdss_device_put(omap_connector->output);
|
|
|
|
kfree(omap_connector);
|
|
}
|
|
|
|
#define MAX_EDID 512
|
|
|
|
static int omap_connector_get_modes_edid(struct drm_connector *connector,
|
|
struct omap_dss_device *dssdev)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
enum drm_connector_status status;
|
|
void *edid;
|
|
int n;
|
|
|
|
status = omap_connector_detect(connector, false);
|
|
if (status != connector_status_connected)
|
|
goto no_edid;
|
|
|
|
edid = kzalloc(MAX_EDID, GFP_KERNEL);
|
|
if (!edid)
|
|
goto no_edid;
|
|
|
|
if (dssdev->ops->read_edid(dssdev, edid, MAX_EDID) <= 0 ||
|
|
!drm_edid_is_valid(edid)) {
|
|
kfree(edid);
|
|
goto no_edid;
|
|
}
|
|
|
|
drm_connector_update_edid_property(connector, edid);
|
|
n = drm_add_edid_modes(connector, edid);
|
|
|
|
omap_connector->hdmi_mode = drm_detect_hdmi_monitor(edid);
|
|
|
|
kfree(edid);
|
|
return n;
|
|
|
|
no_edid:
|
|
drm_connector_update_edid_property(connector, NULL);
|
|
return 0;
|
|
}
|
|
|
|
static int omap_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
struct omap_dss_device *dssdev;
|
|
|
|
DBG("%s", connector->name);
|
|
|
|
/*
|
|
* If display exposes EDID, then we parse that in the normal way to
|
|
* build table of supported modes.
|
|
*/
|
|
dssdev = omap_connector_find_device(connector,
|
|
OMAP_DSS_DEVICE_OP_EDID);
|
|
if (dssdev)
|
|
return omap_connector_get_modes_edid(connector, dssdev);
|
|
|
|
/*
|
|
* Otherwise if the display pipeline reports modes (e.g. with a fixed
|
|
* resolution panel or an analog TV output), query it.
|
|
*/
|
|
dssdev = omap_connector_find_device(connector,
|
|
OMAP_DSS_DEVICE_OP_MODES);
|
|
if (dssdev)
|
|
return dssdev->ops->get_modes(dssdev, connector);
|
|
|
|
/*
|
|
* Otherwise if the display pipeline uses a drm_panel, we delegate the
|
|
* operation to the panel API.
|
|
*/
|
|
if (omap_connector->output->panel)
|
|
return drm_panel_get_modes(omap_connector->output->panel);
|
|
|
|
/*
|
|
* We can't retrieve modes, which can happen for instance for a DVI or
|
|
* VGA output with the DDC bus unconnected. The KMS core will add the
|
|
* default modes.
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
enum drm_mode_status omap_connector_mode_fixup(struct omap_dss_device *dssdev,
|
|
const struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
int ret;
|
|
|
|
drm_mode_copy(adjusted_mode, mode);
|
|
|
|
for (; dssdev; dssdev = dssdev->next) {
|
|
if (!dssdev->ops->check_timings)
|
|
continue;
|
|
|
|
ret = dssdev->ops->check_timings(dssdev, adjusted_mode);
|
|
if (ret)
|
|
return MODE_BAD;
|
|
}
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
static enum drm_mode_status omap_connector_mode_valid(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
struct drm_display_mode new_mode = { { 0 } };
|
|
enum drm_mode_status status;
|
|
|
|
status = omap_connector_mode_fixup(omap_connector->output, mode,
|
|
&new_mode);
|
|
if (status != MODE_OK)
|
|
goto done;
|
|
|
|
/* Check if vrefresh is still valid. */
|
|
if (drm_mode_vrefresh(mode) != drm_mode_vrefresh(&new_mode))
|
|
status = MODE_NOCLOCK;
|
|
|
|
done:
|
|
DBG("connector: mode %s: " DRM_MODE_FMT,
|
|
(status == MODE_OK) ? "valid" : "invalid",
|
|
DRM_MODE_ARG(mode));
|
|
|
|
return status;
|
|
}
|
|
|
|
static const struct drm_connector_funcs omap_connector_funcs = {
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.detect = omap_connector_detect,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = omap_connector_destroy,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
static const struct drm_connector_helper_funcs omap_connector_helper_funcs = {
|
|
.get_modes = omap_connector_get_modes,
|
|
.mode_valid = omap_connector_mode_valid,
|
|
};
|
|
|
|
static int omap_connector_get_type(struct omap_dss_device *output)
|
|
{
|
|
struct omap_dss_device *display;
|
|
enum omap_display_type type;
|
|
|
|
display = omapdss_display_get(output);
|
|
type = display->type;
|
|
omapdss_device_put(display);
|
|
|
|
switch (type) {
|
|
case OMAP_DISPLAY_TYPE_HDMI:
|
|
return DRM_MODE_CONNECTOR_HDMIA;
|
|
case OMAP_DISPLAY_TYPE_DVI:
|
|
return DRM_MODE_CONNECTOR_DVID;
|
|
case OMAP_DISPLAY_TYPE_DSI:
|
|
return DRM_MODE_CONNECTOR_DSI;
|
|
case OMAP_DISPLAY_TYPE_DPI:
|
|
case OMAP_DISPLAY_TYPE_DBI:
|
|
return DRM_MODE_CONNECTOR_DPI;
|
|
case OMAP_DISPLAY_TYPE_VENC:
|
|
/* TODO: This could also be composite */
|
|
return DRM_MODE_CONNECTOR_SVIDEO;
|
|
case OMAP_DISPLAY_TYPE_SDI:
|
|
return DRM_MODE_CONNECTOR_LVDS;
|
|
default:
|
|
return DRM_MODE_CONNECTOR_Unknown;
|
|
}
|
|
}
|
|
|
|
/* initialize connector */
|
|
struct drm_connector *omap_connector_init(struct drm_device *dev,
|
|
struct omap_dss_device *output,
|
|
struct drm_encoder *encoder)
|
|
{
|
|
struct drm_connector *connector = NULL;
|
|
struct omap_connector *omap_connector;
|
|
struct omap_dss_device *dssdev;
|
|
|
|
DBG("%s", output->name);
|
|
|
|
omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL);
|
|
if (!omap_connector)
|
|
goto fail;
|
|
|
|
omap_connector->output = omapdss_device_get(output);
|
|
|
|
connector = &omap_connector->base;
|
|
connector->interlace_allowed = 1;
|
|
connector->doublescan_allowed = 0;
|
|
|
|
drm_connector_init(dev, connector, &omap_connector_funcs,
|
|
omap_connector_get_type(output));
|
|
drm_connector_helper_add(connector, &omap_connector_helper_funcs);
|
|
|
|
/*
|
|
* Initialize connector status handling. First try to find a device that
|
|
* supports hot-plug reporting. If it fails, fall back to a device that
|
|
* support polling. If that fails too, we don't support hot-plug
|
|
* detection at all.
|
|
*/
|
|
dssdev = omap_connector_find_device(connector, OMAP_DSS_DEVICE_OP_HPD);
|
|
if (dssdev) {
|
|
omap_connector->hpd = omapdss_device_get(dssdev);
|
|
connector->polled = DRM_CONNECTOR_POLL_HPD;
|
|
} else {
|
|
dssdev = omap_connector_find_device(connector,
|
|
OMAP_DSS_DEVICE_OP_DETECT);
|
|
if (dssdev)
|
|
connector->polled = DRM_CONNECTOR_POLL_CONNECT |
|
|
DRM_CONNECTOR_POLL_DISCONNECT;
|
|
}
|
|
|
|
return connector;
|
|
|
|
fail:
|
|
if (connector)
|
|
omap_connector_destroy(connector);
|
|
|
|
return NULL;
|
|
}
|