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1// SPDX-License-Identifier: GPL-2.0-only2 3#include <drm/drm_atomic_helper.h>4#include <drm/drm_modeset_helper_vtables.h>5#include <drm/drm_probe_helper.h>6 7#include "mgag200_ddc.h"8#include "mgag200_drv.h"9 10static const struct drm_encoder_funcs mgag200_dac_encoder_funcs = {11 .destroy = drm_encoder_cleanup12};13 14static const struct drm_connector_helper_funcs mgag200_vga_connector_helper_funcs = {15 .get_modes = drm_connector_helper_get_modes,16 .detect_ctx = drm_connector_helper_detect_from_ddc17};18 19static const struct drm_connector_funcs mgag200_vga_connector_funcs = {20 .reset = drm_atomic_helper_connector_reset,21 .fill_modes = drm_helper_probe_single_connector_modes,22 .destroy = drm_connector_cleanup,23 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,24 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state25};26 27int mgag200_vga_output_init(struct mga_device *mdev)28{29 struct drm_device *dev = &mdev->base;30 struct drm_crtc *crtc = &mdev->crtc;31 struct drm_encoder *encoder;32 struct drm_connector *connector;33 struct i2c_adapter *ddc;34 int ret;35 36 encoder = &mdev->output.vga.encoder;37 ret = drm_encoder_init(dev, encoder, &mgag200_dac_encoder_funcs,38 DRM_MODE_ENCODER_DAC, NULL);39 if (ret) {40 drm_err(dev, "drm_encoder_init() failed: %d\n", ret);41 return ret;42 }43 encoder->possible_crtcs = drm_crtc_mask(crtc);44 45 ddc = mgag200_ddc_create(mdev);46 if (IS_ERR(ddc)) {47 ret = PTR_ERR(ddc);48 drm_err(dev, "failed to add DDC bus: %d\n", ret);49 return ret;50 }51 52 connector = &mdev->output.vga.connector;53 ret = drm_connector_init_with_ddc(dev, connector,54 &mgag200_vga_connector_funcs,55 DRM_MODE_CONNECTOR_VGA, ddc);56 if (ret) {57 drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);58 return ret;59 }60 drm_connector_helper_add(connector, &mgag200_vga_connector_helper_funcs);61 62 connector->polled = DRM_CONNECTOR_POLL_CONNECT |63 DRM_CONNECTOR_POLL_DISCONNECT;64 65 ret = drm_connector_attach_encoder(connector, encoder);66 if (ret) {67 drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);68 return ret;69 }70 71 return 0;72}73