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| author | Simon Glass <sjg@chromium.org> | 2016-01-21 19:44:58 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-01-21 20:42:36 -0700 |
| commit | f563dc1d195aa7ca0ba1ce614031e9727fab1325 (patch) | |
| tree | d54147c647b53c89cfba06daf204ba02f4101f0b | |
| parent | 65fba5927c9f5e313a15b952c8e51b6e3a693534 (diff) | |
| download | u-boot-imx-f563dc1d195aa7ca0ba1ce614031e9727fab1325.zip u-boot-imx-f563dc1d195aa7ca0ba1ce614031e9727fab1325.tar.gz u-boot-imx-f563dc1d195aa7ca0ba1ce614031e9727fab1325.tar.bz2 | |
dm: panel: Add a panel uclass
LCD panels can usefully be modelled as their own uclass. They can be probed
(which powers them up ready for use). If they have a backlight, this can be
enabled.
Signed-off-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | drivers/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/panel-uclass.c | 25 | ||||
| -rw-r--r-- | include/dm/uclass-id.h | 1 | ||||
| -rw-r--r-- | include/panel.h | 31 |
4 files changed, 58 insertions, 0 deletions
diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 6d89532..d29280c 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -8,6 +8,7 @@ ifdef CONFIG_DM obj-$(CONFIG_DISPLAY_PORT) += dp-uclass.o obj-$(CONFIG_DM_VIDEO) += backlight-uclass.o +obj-$(CONFIG_DM_VIDEO) += panel-uclass.o obj-$(CONFIG_DM_VIDEO) += video-uclass.o vidconsole-uclass.o console_normal.o obj-$(CONFIG_DM_VIDEO) += video_bmp.o ifdef CONFIG_DM_VIDEO diff --git a/drivers/video/panel-uclass.c b/drivers/video/panel-uclass.c new file mode 100644 index 0000000..3f4c41b --- /dev/null +++ b/drivers/video/panel-uclass.c @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2016 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <panel.h> + +int panel_enable_backlight(struct udevice *dev) +{ + struct panel_ops *ops = panel_get_ops(dev); + + if (!ops->enable_backlight) + return -ENOSYS; + + return ops->enable_backlight(dev); +} + +UCLASS_DRIVER(panel) = { + .id = UCLASS_PANEL, + .name = "panel", +}; diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 5421981..8308c23 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -45,6 +45,7 @@ enum uclass_id { UCLASS_MMC, /* SD / MMC card or chip */ UCLASS_MOD_EXP, /* RSA Mod Exp device */ UCLASS_MTD, /* Memory Technology Device (MTD) device */ + UCLASS_PANEL, /* Display panel, such as an LCD */ UCLASS_PANEL_BACKLIGHT, /* Backlight controller for panel */ UCLASS_PCH, /* x86 platform controller hub */ UCLASS_PCI, /* PCI bus */ diff --git a/include/panel.h b/include/panel.h new file mode 100644 index 0000000..57fccf2 --- /dev/null +++ b/include/panel.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2016 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _PANEL_H +#define _PANEL_H + +struct panel_ops { + /** + * enable_backlight() - Enable the panel backlight + * + * @dev: Panel device containing the backlight to enable + * @return 0 if OK, -ve on error + */ + int (*enable_backlight)(struct udevice *dev); +}; + +#define panel_get_ops(dev) ((struct panel_ops *)(dev)->driver->ops) + +/** + * panel_enable_backlight() - Enable the panel backlight + * + * @dev: Panel device containing the backlight to enable + * @return 0 if OK, -ve on error + */ +int panel_enable_backlight(struct udevice *dev); + +#endif |