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authorSimon Glass <sjg@chromium.org>2016-01-21 19:45:00 -0700
committerSimon Glass <sjg@chromium.org>2016-01-21 20:42:36 -0700
commit2dcf143398ad89ac960e02c7149521ae420db43b (patch)
tree7ab1e2601c2d3322fc2ba19700ba0a0d5c32e6fd /drivers/video/display-uclass.c
parentcd9c2070ea0712bd69e18236e8b52232fd27b02e (diff)
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dm: video: Repurpose the 'displayport' uclass to 'display'
The current DisplayPort uclass is too specific. The operations it provides are shared with other types of output devices, such as HDMI and LVDS LCD displays. Generalise the uclass so that it can be used with these devices as well. Adjust the uclass to handle the EDID reading and conversion to display_timing internally. Also update nyan-big which is affected by this. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/video/display-uclass.c')
-rw-r--r--drivers/video/display-uclass.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/video/display-uclass.c b/drivers/video/display-uclass.c
new file mode 100644
index 0000000..31522ea
--- /dev/null
+++ b/drivers/video/display-uclass.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#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);
+
+ if (!ops || !ops->enable)
+ return -ENOSYS;
+ return ops->enable(dev, panel_bpp, timing);
+}
+
+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_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);
+}
+
+UCLASS_DRIVER(display) = {
+ .id = UCLASS_DISPLAY,
+ .name = "display",
+ .per_device_platdata_auto_alloc_size = sizeof(struct display_plat),
+};