diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_vga.c')
-rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_vga.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_vga.c b/drivers/gpu/drm/mgag200/mgag200_vga.c new file mode 100644 index 000000000000..60568f32736d --- /dev/null +++ b/drivers/gpu/drm/mgag200/mgag200_vga.c @@ -0,0 +1,72 @@ +// 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; +} |