// SPDX-License-Identifier: GPL-2.0-only
#include <drm/drm_atomic_helper.h>
#include <drm/drm_modeset_helper_vtables.h>
#include <drm/drm_probe_helper.h>
#include "mgag200_ddc.h"
#include "mgag200_drv.h"
static const struct drm_encoder_funcs mgag200_dac_encoder_funcs = {
.destroy = drm_encoder_cleanup
};
static const struct drm_connector_helper_funcs mgag200_vga_connector_helper_funcs = {
.get_modes = drm_connector_helper_get_modes,
.detect_ctx = drm_connector_helper_detect_from_ddc
};
static const struct drm_connector_funcs mgag200_vga_connector_funcs = {
.reset = drm_atomic_helper_connector_reset,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state
};
int mgag200_vga_output_init(struct mga_device *mdev)
{
struct drm_device *dev = &mdev->base;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
struct i2c_adapter *ddc;
int ret;
encoder = &mdev->output.vga.encoder;
ret = drm_encoder_init(dev, encoder, &mgag200_dac_encoder_funcs,
DRM_MODE_ENCODER_DAC, NULL);
if (ret) {
drm_err(dev, "drm_encoder_init() failed: %d\n", ret);
return ret;
}
encoder->possible_crtcs = drm_crtc_mask(crtc);
ddc = mgag200_ddc_create(mdev);
if (IS_ERR(ddc)) {
ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
connector = &mdev->output.vga.connector;
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_vga_connector_funcs,
DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
}
drm_connector_helper_add(connector, &mgag200_vga_connector_helper_funcs);
connector->polled = DRM_CONNECTOR_POLL_CONNECT |
DRM_CONNECTOR_POLL_DISCONNECT;
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
return ret;
}
return 0;
}