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authorSimon Glass <sjg@chromium.org>2015-04-14 21:03:38 -0600
committerTom Warren <twarren@nvidia.com>2015-05-13 09:24:10 -0700
commit51f2c99e14b28b65b7f66a5cd392fa49c03537aa (patch)
tree4269e3d3667b6d78f69ecbd7301d194c978db53f /drivers/video
parent00cf1167bb8f7c08825262ee83e77274ff034f0a (diff)
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dm: video: Add a uclass for display port
eDP (Embedded DisplayPort) is a standard widely used in laptops to drive LCD panels. Add a uclass for this which supports a few simple operations. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/Kconfig7
-rw-r--r--drivers/video/Makefile4
-rw-r--r--drivers/video/dp-uclass.c34
3 files changed, 45 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 51728b3..62af63a 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -88,3 +88,10 @@ config VIDEO_LCD_SPI_MISO
hardware and LCD panel id retrieval (if the panel can report it). The
option takes a string in the format understood by 'name_to_gpio'
function, e.g. PH1 for pin 1 of port H.
+
+config DISPLAY_PORT
+ bool "Enable DisplayPort support"
+ help
+ eDP (Embedded DisplayPort) is a standard widely used in laptops
+ to drive LCD panels. This framework provides support for enabling
+ these displays where supported by the video hardware.
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index f64918e..2945710 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -5,6 +5,10 @@
# SPDX-License-Identifier: GPL-2.0+
#
+ifdef CONFIG_DM
+obj-$(CONFIG_DISPLAY_PORT) += dp-uclass.o
+endif
+
obj-$(CONFIG_ATI_RADEON_FB) += ati_radeon_fb.o videomodes.o
obj-$(CONFIG_ATMEL_HLCD) += atmel_hlcdfb.o
obj-$(CONFIG_ATMEL_LCD) += atmel_lcdfb.o
diff --git a/drivers/video/dp-uclass.c b/drivers/video/dp-uclass.c
new file mode 100644
index 0000000..17f5de9
--- /dev/null
+++ b/drivers/video/dp-uclass.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <displayport.h>
+#include <errno.h>
+
+int display_port_read_edid(struct udevice *dev, u8 *buf, int buf_size)
+{
+ struct dm_display_port_ops *ops = display_port_get_ops(dev);
+
+ if (!ops || !ops->read_edid)
+ return -ENOSYS;
+ return ops->read_edid(dev, buf, buf_size);
+}
+
+int display_port_enable(struct udevice *dev, int panel_bpp,
+ const struct display_timing *timing)
+{
+ struct dm_display_port_ops *ops = display_port_get_ops(dev);
+
+ if (!ops || !ops->enable)
+ return -ENOSYS;
+ return ops->enable(dev, panel_bpp, timing);
+}
+
+UCLASS_DRIVER(display_port) = {
+ .id = UCLASS_DISPLAY_PORT,
+ .name = "display_port",
+};