diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_panel.c | 100 | ||||
| -rw-r--r-- | drivers/gpu/drm/panel/Kconfig | 5 |
4 files changed, 108 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 0b8f8fdfdea9..5b1cb7e73ee8 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -195,3 +195,5 @@ source "drivers/gpu/drm/qxl/Kconfig" source "drivers/gpu/drm/msm/Kconfig" source "drivers/gpu/drm/tegra/Kconfig" + +source "drivers/gpu/drm/panel/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index b46239a619cf..800c021c6ceb 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -18,6 +18,7 @@ drm-y := drm_auth.o drm_buffer.o drm_bufs.o drm_cache.o \ drm-$(CONFIG_COMPAT) += drm_ioc32.o drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o drm-$(CONFIG_PCI) += ati_pcigart.o +drm-$(CONFIG_DRM_PANEL) += drm_panel.o drm-usb-y := drm_usb.o diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c new file mode 100644 index 000000000000..2ef988e037b7 --- /dev/null +++ b/drivers/gpu/drm/drm_panel.c @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2013, NVIDIA Corporation. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <linux/err.h> +#include <linux/module.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_panel.h> + +static DEFINE_MUTEX(panel_lock); +static LIST_HEAD(panel_list); + +void drm_panel_init(struct drm_panel *panel) +{ + INIT_LIST_HEAD(&panel->list); +} +EXPORT_SYMBOL(drm_panel_init); + +int drm_panel_add(struct drm_panel *panel) +{ + mutex_lock(&panel_lock); + list_add_tail(&panel->list, &panel_list); + mutex_unlock(&panel_lock); + + return 0; +} +EXPORT_SYMBOL(drm_panel_add); + +void drm_panel_remove(struct drm_panel *panel) +{ + mutex_lock(&panel_lock); + list_del_init(&panel->list); + mutex_unlock(&panel_lock); +} +EXPORT_SYMBOL(drm_panel_remove); + +int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector) +{ + if (panel->connector) + return -EBUSY; + + panel->connector = connector; + panel->drm = connector->dev; + + return 0; +} +EXPORT_SYMBOL(drm_panel_attach); + +int drm_panel_detach(struct drm_panel *panel) +{ + panel->connector = NULL; + panel->drm = NULL; + + return 0; +} +EXPORT_SYMBOL(drm_panel_detach); + +#ifdef CONFIG_OF +struct drm_panel *of_drm_find_panel(struct device_node *np) +{ + struct drm_panel *panel; + + mutex_lock(&panel_lock); + + list_for_each_entry(panel, &panel_list, list) { + if (panel->dev->of_node == np) { + mutex_unlock(&panel_lock); + return panel; + } + } + + mutex_unlock(&panel_lock); + return NULL; +} +EXPORT_SYMBOL(of_drm_find_panel); +#endif + +MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); +MODULE_DESCRIPTION("DRM panel infrastructure"); +MODULE_LICENSE("GPL and additional rights"); diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig new file mode 100644 index 000000000000..d1db4ef626fd --- /dev/null +++ b/drivers/gpu/drm/panel/Kconfig @@ -0,0 +1,5 @@ +config DRM_PANEL + bool + depends on DRM + help + Panel registration and lookup framework. |