From f563dc1d195aa7ca0ba1ce614031e9727fab1325 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 21 Jan 2016 19:44:58 -0700 Subject: 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 --- include/dm/uclass-id.h | 1 + include/panel.h | 31 +++++++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) create mode 100644 include/panel.h (limited to 'include') diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 5421981eb52..8308c238ca6 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 00000000000..57fccf222e3 --- /dev/null +++ b/include/panel.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2016 Google, Inc + * Written by Simon Glass + * + * 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 -- cgit v1.2.3