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| 1 | +// SPDX-License-Identifier: GPL-2.0-only |
| 2 | + |
| 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 | + |
| 10 | +static const struct drm_encoder_funcs mgag200_dac_encoder_funcs = { |
| 11 | + .destroy = drm_encoder_cleanup |
| 12 | +}; |
| 13 | + |
| 14 | +static 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_ddc |
| 17 | +}; |
| 18 | + |
| 19 | +static 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_state |
| 25 | +}; |
| 26 | + |
| 27 | +int mgag200_vga_bmc_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 | +} |
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