Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Rongrong Zou |
187 |
36.67% |
2 |
9.09% |
| Tian Tao |
146 |
28.63% |
9 |
40.91% |
| Lin He |
97 |
19.02% |
1 |
4.55% |
| Baihan Li |
62 |
12.16% |
4 |
18.18% |
| Jani Nikula |
8 |
1.57% |
1 |
4.55% |
| Sam Ravnborg |
3 |
0.59% |
1 |
4.55% |
| Thomas Zimmermann |
3 |
0.59% |
1 |
4.55% |
| Thomas Gleixner |
2 |
0.39% |
1 |
4.55% |
| Daniel Vetter |
2 |
0.39% |
2 |
9.09% |
| Total |
510 |
|
22 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* Hisilicon Hibmc SoC drm driver
*
* Based on the bochs drm driver.
*
* Copyright (c) 2016 Huawei Limited.
*
* Author:
* Rongrong Zou <zourongrong@huawei.com>
* Rongrong Zou <zourongrong@gmail.com>
* Jianhua Li <lijianhua@huawei.com>
*/
#include <linux/io.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_simple_kms_helper.h>
#include "hibmc_drm_drv.h"
#include "hibmc_drm_regs.h"
static int hibmc_connector_get_modes(struct drm_connector *connector)
{
struct drm_mode_config *mode_config = &connector->dev->mode_config;
struct hibmc_vdac *vdac = to_hibmc_vdac(connector);
int count;
if (vdac->phys_status == connector_status_connected) {
count = drm_connector_helper_get_modes(connector);
} else {
drm_edid_connector_update(connector, NULL);
count = drm_add_modes_noedid(connector,
mode_config->max_width,
mode_config->max_height);
if (count)
drm_set_preferred_mode(connector, 1024, 768);
}
return count;
}
static void hibmc_connector_destroy(struct drm_connector *connector)
{
struct hibmc_vdac *vdac = to_hibmc_vdac(connector);
hibmc_ddc_del(vdac);
drm_connector_cleanup(connector);
}
static int hibmc_vdac_detect(struct drm_connector *connector,
struct drm_modeset_acquire_ctx *ctx,
bool force)
{
struct hibmc_drm_private *priv = to_hibmc_drm_private(connector->dev);
int status = drm_connector_helper_detect_from_ddc(connector, ctx,
force);
struct hibmc_vdac *vdac = to_hibmc_vdac(connector);
if (priv->dp.phys_status == connector_status_connected) {
vdac->phys_status = status;
return status;
}
if (status != vdac->phys_status)
++connector->epoch_counter;
vdac->phys_status = status;
/* When both the DP and VDAC physical status are disconnected,
* the "connected" status is returned to support KVM display.
*/
return connector_status_connected;
}
static const struct drm_connector_helper_funcs
hibmc_connector_helper_funcs = {
.get_modes = hibmc_connector_get_modes,
.detect_ctx = hibmc_vdac_detect,
};
static const struct drm_connector_funcs hibmc_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = hibmc_connector_destroy,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
int hibmc_vdac_init(struct hibmc_drm_private *priv)
{
struct drm_device *dev = &priv->dev;
struct hibmc_vdac *vdac = &priv->vdac;
struct drm_encoder *encoder = &vdac->encoder;
struct drm_crtc *crtc = &priv->crtc;
struct drm_connector *connector = &vdac->connector;
int ret;
ret = hibmc_ddc_create(dev, vdac);
if (ret) {
drm_err(dev, "failed to create ddc: %d\n", ret);
return ret;
}
encoder->possible_crtcs = drm_crtc_mask(crtc);
ret = drmm_encoder_init(dev, encoder, NULL, DRM_MODE_ENCODER_DAC, NULL);
if (ret) {
drm_err(dev, "failed to init encoder: %d\n", ret);
goto err;
}
ret = drm_connector_init_with_ddc(dev, connector,
&hibmc_connector_funcs,
DRM_MODE_CONNECTOR_VGA,
&vdac->adapter);
if (ret) {
drm_err(dev, "failed to init connector: %d\n", ret);
goto err;
}
drm_connector_helper_add(connector, &hibmc_connector_helper_funcs);
drm_connector_attach_encoder(connector, encoder);
connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
vdac->phys_status = connector_status_disconnected;
return 0;
err:
hibmc_ddc_del(vdac);
return ret;
}