// SPDX-License-Identifier: GPL-2.0-or-later /* Hisilicon Hibmc SoC drm driver * * Based on the bochs drm driver. * * Copyright (c) 2016 Huawei Limited. * * Author: * Rongrong Zou * Rongrong Zou * Jianhua Li */ #include #include #include #include "hibmc_drm_drv.h" #include "hibmc_drm_regs.h" static int hibmc_connector_get_modes(struct drm_connector *connector) { int count; count = drm_add_modes_noedid(connector, connector->dev->mode_config.max_width, connector->dev->mode_config.max_height); drm_set_preferred_mode(connector, 1024, 768); return count; } static enum drm_mode_status hibmc_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { return MODE_OK; } static const struct drm_connector_helper_funcs hibmc_connector_helper_funcs = { .get_modes = hibmc_connector_get_modes, .mode_valid = hibmc_connector_mode_valid, }; static const struct drm_connector_funcs hibmc_connector_funcs = { .fill_modes = drm_helper_probe_single_connector_modes, .destroy = drm_connector_cleanup, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; static void hibmc_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adj_mode) { u32 reg; struct drm_device *dev = encoder->dev; struct hibmc_drm_private *priv = dev->dev_private; reg = readl(priv->mmio + HIBMC_DISPLAY_CONTROL_HISILE); reg |= HIBMC_DISPLAY_CONTROL_FPVDDEN(1); reg |= HIBMC_DISPLAY_CONTROL_PANELDATE(1); reg |= HIBMC_DISPLAY_CONTROL_FPEN(1); reg |= HIBMC_DISPLAY_CONTROL_VBIASEN(1); writel(reg, priv->mmio + HIBMC_DISPLAY_CONTROL_HISILE); } static const struct drm_encoder_helper_funcs hibmc_encoder_helper_funcs = { .mode_set = hibmc_encoder_mode_set, }; static const struct drm_encoder_funcs hibmc_encoder_funcs = { .destroy = drm_encoder_cleanup, }; int hibmc_vdac_init(struct hibmc_drm_private *priv) { struct drm_device *dev = priv->dev; struct drm_encoder *encoder = &priv->encoder; struct drm_connector *connector = &priv->connector; int ret; encoder->possible_crtcs = 0x1; ret = drm_encoder_init(dev, encoder, &hibmc_encoder_funcs, DRM_MODE_ENCODER_DAC, NULL); if (ret) { drm_err(dev, "failed to init encoder: %d\n", ret); return ret; } drm_encoder_helper_add(encoder, &hibmc_encoder_helper_funcs); ret = drm_connector_init(dev, connector, &hibmc_connector_funcs, DRM_MODE_CONNECTOR_VGA); if (ret) { drm_err(dev, "failed to init connector: %d\n", ret); return ret; } drm_connector_helper_add(connector, &hibmc_connector_helper_funcs); drm_connector_attach_encoder(connector, encoder); return 0; }