| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright 2014 Google Inc. |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <display.h> |
| #include <edid.h> |
| #include <errno.h> |
| |
| int display_read_edid(struct udevice *dev, u8 *buf, int buf_size) |
| { |
| struct dm_display_ops *ops = display_get_ops(dev); |
| |
| if (!ops || !ops->read_edid) |
| return -ENOSYS; |
| return ops->read_edid(dev, buf, buf_size); |
| } |
| |
| int display_enable(struct udevice *dev, int panel_bpp, |
| const struct display_timing *timing) |
| { |
| struct dm_display_ops *ops = display_get_ops(dev); |
| struct display_plat *disp_uc_plat; |
| int ret; |
| |
| if (!ops || !ops->enable) |
| return -ENOSYS; |
| ret = ops->enable(dev, panel_bpp, timing); |
| if (ret) |
| return ret; |
| |
| disp_uc_plat = dev_get_uclass_platdata(dev); |
| disp_uc_plat->in_use = true; |
| |
| return 0; |
| } |
| |
| int display_read_timing(struct udevice *dev, struct display_timing *timing) |
| { |
| struct dm_display_ops *ops = display_get_ops(dev); |
| int panel_bits_per_colour; |
| u8 buf[EDID_EXT_SIZE]; |
| int ret; |
| |
| if (ops && ops->read_timing) |
| return ops->read_timing(dev, timing); |
| |
| if (!ops || !ops->read_edid) |
| return -ENOSYS; |
| ret = ops->read_edid(dev, buf, sizeof(buf)); |
| if (ret < 0) |
| return ret; |
| |
| return edid_get_timing(buf, ret, timing, &panel_bits_per_colour); |
| } |
| |
| bool display_in_use(struct udevice *dev) |
| { |
| struct display_plat *disp_uc_plat = dev_get_uclass_platdata(dev); |
| |
| return disp_uc_plat->in_use; |
| } |
| |
| UCLASS_DRIVER(display) = { |
| .id = UCLASS_DISPLAY, |
| .name = "display", |
| .per_device_platdata_auto_alloc_size = sizeof(struct display_plat), |
| }; |