d20c2f8464
Permanently set the connector status to 'connected'. Return BMC modes for connector if no display is attached to the physical DP connector. Otherwise use EDID modes as before. If the status of the physical connector changes, the driver still generates a hotplug event. DRM clients will then reconfigure their output to a mode appropriate for either physical display or BMC. v3: - use struct ast_connector.physical_status to handle BMC Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240815151953.184679-10-tzimmermann@suse.de
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
// SPDX-License-Identifier: MIT
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#include <drm/drm_atomic_state_helper.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_modeset_helper_vtables.h>
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#include <drm/drm_print.h>
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#include <drm/drm_probe_helper.h>
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#include "ast_ddc.h"
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#include "ast_drv.h"
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/*
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* Encoder
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*/
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static const struct drm_encoder_funcs ast_sil164_encoder_funcs = {
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.destroy = drm_encoder_cleanup,
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};
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/*
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* Connector
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*/
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static int ast_sil164_connector_helper_get_modes(struct drm_connector *connector)
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{
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struct ast_connector *ast_connector = to_ast_connector(connector);
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int count;
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if (ast_connector->physical_status == connector_status_connected) {
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count = drm_connector_helper_get_modes(connector);
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} else {
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/*
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* There's no EDID data without a connected monitor. Set BMC-
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* compatible modes in this case. The XGA default resolution
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* should work well for all BMCs.
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*/
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count = drm_add_modes_noedid(connector, 4096, 4096);
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if (count)
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drm_set_preferred_mode(connector, 1024, 768);
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}
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return count;
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}
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static int ast_sil164_connector_helper_detect_ctx(struct drm_connector *connector,
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struct drm_modeset_acquire_ctx *ctx,
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bool force)
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{
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struct ast_connector *ast_connector = to_ast_connector(connector);
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enum drm_connector_status status;
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status = drm_connector_helper_detect_from_ddc(connector, ctx, force);
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if (status != ast_connector->physical_status)
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++connector->epoch_counter;
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ast_connector->physical_status = status;
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return connector_status_connected;
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}
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static const struct drm_connector_helper_funcs ast_sil164_connector_helper_funcs = {
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.get_modes = ast_sil164_connector_helper_get_modes,
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.detect_ctx = ast_sil164_connector_helper_detect_ctx,
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};
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static const struct drm_connector_funcs ast_sil164_connector_funcs = {
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.reset = drm_atomic_helper_connector_reset,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = drm_connector_cleanup,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static int ast_sil164_connector_init(struct drm_device *dev, struct drm_connector *connector)
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{
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struct ast_device *ast = to_ast_device(dev);
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struct i2c_adapter *ddc;
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int ret;
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ddc = ast_ddc_create(ast);
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if (IS_ERR(ddc)) {
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ret = PTR_ERR(ddc);
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drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
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return ret;
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}
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ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
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DRM_MODE_CONNECTOR_DVII, ddc);
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if (ret)
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return ret;
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drm_connector_helper_add(connector, &ast_sil164_connector_helper_funcs);
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connector->interlace_allowed = 0;
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connector->doublescan_allowed = 0;
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connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
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return 0;
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}
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int ast_sil164_output_init(struct ast_device *ast)
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{
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struct drm_device *dev = &ast->base;
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struct drm_crtc *crtc = &ast->crtc;
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struct drm_encoder *encoder = &ast->output.sil164.encoder;
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struct ast_connector *ast_connector = &ast->output.sil164.connector;
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struct drm_connector *connector = &ast_connector->base;
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int ret;
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ret = drm_encoder_init(dev, encoder, &ast_sil164_encoder_funcs,
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DRM_MODE_ENCODER_TMDS, NULL);
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if (ret)
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return ret;
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encoder->possible_crtcs = drm_crtc_mask(crtc);
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ret = ast_sil164_connector_init(dev, connector);
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if (ret)
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return ret;
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ast_connector->physical_status = connector->status;
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ret = drm_connector_attach_encoder(connector, encoder);
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if (ret)
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return ret;
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return 0;
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}
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