diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_core.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_core.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_core.c b/drivers/gpu/drm/exynos/exynos_drm_core.c new file mode 100644 index 000000000..4c9f972ea --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_core.c @@ -0,0 +1,161 @@ +/* exynos_drm_core.c + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * Author: + * Inki Dae <inki.dae@samsung.com> + * Joonyoung Shim <jy0922.shim@samsung.com> + * Seung-Woo Kim <sw0312.kim@samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <drm/drmP.h> +#include "exynos_drm_drv.h" +#include "exynos_drm_crtc.h" +#include "exynos_drm_encoder.h" +#include "exynos_drm_fbdev.h" + +static LIST_HEAD(exynos_drm_subdrv_list); + +int exynos_drm_create_enc_conn(struct drm_device *dev, + struct exynos_drm_display *display) +{ + struct drm_encoder *encoder; + int ret; + unsigned long possible_crtcs = 0; + + ret = exynos_drm_crtc_get_pipe_from_type(dev, display->type); + if (ret < 0) + return ret; + + possible_crtcs |= 1 << ret; + + /* create and initialize a encoder for this sub driver. */ + encoder = exynos_drm_encoder_create(dev, display, possible_crtcs); + if (!encoder) { + DRM_ERROR("failed to create encoder\n"); + return -EFAULT; + } + + display->encoder = encoder; + + ret = display->ops->create_connector(display, encoder); + if (ret) { + DRM_ERROR("failed to create connector ret = %d\n", ret); + goto err_destroy_encoder; + } + + return 0; + +err_destroy_encoder: + encoder->funcs->destroy(encoder); + return ret; +} + +int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv) +{ + if (!subdrv) + return -EINVAL; + + list_add_tail(&subdrv->list, &exynos_drm_subdrv_list); + + return 0; +} +EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register); + +int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv) +{ + if (!subdrv) + return -EINVAL; + + list_del(&subdrv->list); + + return 0; +} +EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister); + +int exynos_drm_device_subdrv_probe(struct drm_device *dev) +{ + struct exynos_drm_subdrv *subdrv, *n; + int err; + + if (!dev) + return -EINVAL; + + list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) { + if (subdrv->probe) { + subdrv->drm_dev = dev; + + /* + * this probe callback would be called by sub driver + * after setting of all resources to this sub driver, + * such as clock, irq and register map are done. + */ + err = subdrv->probe(dev, subdrv->dev); + if (err) { + DRM_DEBUG("exynos drm subdrv probe failed.\n"); + list_del(&subdrv->list); + continue; + } + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(exynos_drm_device_subdrv_probe); + +int exynos_drm_device_subdrv_remove(struct drm_device *dev) +{ + struct exynos_drm_subdrv *subdrv; + + if (!dev) { + WARN(1, "Unexpected drm device unregister!\n"); + return -EINVAL; + } + + list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { + if (subdrv->remove) + subdrv->remove(dev, subdrv->dev); + } + + return 0; +} +EXPORT_SYMBOL_GPL(exynos_drm_device_subdrv_remove); + +int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file) +{ + struct exynos_drm_subdrv *subdrv; + int ret; + + list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { + if (subdrv->open) { + ret = subdrv->open(dev, subdrv->dev, file); + if (ret) + goto err; + } + } + + return 0; + +err: + list_for_each_entry_reverse(subdrv, &subdrv->list, list) { + if (subdrv->close) + subdrv->close(dev, subdrv->dev, file); + } + return ret; +} +EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open); + +void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file) +{ + struct exynos_drm_subdrv *subdrv; + + list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { + if (subdrv->close) + subdrv->close(dev, subdrv->dev, file); + } +} +EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close); |