From eab314f5909dba208d4cb7dc5aac6ee707d5d171 Mon Sep 17 00:00:00 2001
From: Jacob Chen <jacob-chen@iotwrt.com>
Date: Mon, 14 Mar 2016 11:20:14 +0800
Subject: [PATCH] dm: video: Add a operation to display uclass
The current display class only allow to get timing from edid.
So add a operation to get timing directly from driver.
In driver, I will use fdtdec_decode_display_timing to get timing.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Acked-by: Simon Glass <sjg@chromium.org>
---
drivers/video/display-uclass.c | 3 +++
include/display.h | 11 ++++++++++-
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/video/display-uclass.c b/drivers/video/display-uclass.c
index 31522eac65..e4763de73d 100644
--- a/drivers/video/display-uclass.c
+++ b/drivers/video/display-uclass.c
@@ -36,6 +36,9 @@ int display_read_timing(struct udevice *dev, struct display_timing *timing)
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));
diff --git a/include/display.h b/include/display.h
index c180e76e53..b1c476628b 100644
--- a/include/display.h
+++ b/include/display.h
@@ -23,7 +23,7 @@ struct display_plat {
};
/**
- * display_read_timing() - Read timing information from EDID
+ * display_read_timing() - Read timing information
*
* @dev: Device to read from
* @return 0 if OK, -ve on error
@@ -42,6 +42,15 @@ int display_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *timing);
struct dm_display_ops {
+ /**
+ * read_timing() - Read information directly
+ *
+ * @dev: Device to read from
+ * @timing: Display timings
+ * @return 0 if OK, -ve on error
+ */
+ int (*read_timing)(struct udevice *dev, struct display_timing *timing);
+
/**
* read_edid() - Read information from EDID
*
--
2.39.5