mirror of https://gitee.com/openkylin/linux.git
158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Author: Rob Clark <rob@ti.com>
|
|
*/
|
|
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_crtc.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;
|
|
};
|
|
|
|
static enum drm_connector_status omap_connector_detect(
|
|
struct drm_connector *connector, bool force)
|
|
{
|
|
return connector_status_connected;
|
|
}
|
|
|
|
static void omap_connector_destroy(struct drm_connector *connector)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
|
|
DBG("%s", connector->name);
|
|
|
|
drm_connector_unregister(connector);
|
|
drm_connector_cleanup(connector);
|
|
|
|
omapdss_device_put(omap_connector->output);
|
|
|
|
kfree(omap_connector);
|
|
}
|
|
|
|
static int omap_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct omap_connector *omap_connector = to_omap_connector(connector);
|
|
struct omap_dss_device *dssdev = NULL;
|
|
struct omap_dss_device *d;
|
|
|
|
DBG("%s", connector->name);
|
|
|
|
/*
|
|
* If the display pipeline reports modes (e.g. with a fixed resolution
|
|
* panel or an analog TV output), query it.
|
|
*/
|
|
for (d = omap_connector->output; d; d = d->next) {
|
|
if (d->ops_flags & OMAP_DSS_DEVICE_OP_MODES)
|
|
dssdev = d;
|
|
}
|
|
|
|
if (dssdev)
|
|
return dssdev->ops->get_modes(dssdev, connector);
|
|
|
|
/* We can't retrieve modes. 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 || !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,
|
|
};
|
|
|
|
/* 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;
|
|
|
|
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,
|
|
DRM_MODE_CONNECTOR_DSI);
|
|
drm_connector_helper_add(connector, &omap_connector_helper_funcs);
|
|
|
|
return connector;
|
|
|
|
fail:
|
|
if (connector)
|
|
omap_connector_destroy(connector);
|
|
|
|
return NULL;
|
|
}
|