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drm/imx: imx-ldb: honor 'native-mode' property when selecting video mode from DT 

This patch allows to select a specific video mode from a list of modes
defined in DT by setting the 'native-mode' property appropriately.

This change does not affect the behaviour of existing platforms, since
they either:
   - have just one display-timings subnode
   - have the native-mode property pointing to the first entry
   - let the bootloader select the appropriate timing

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Lothar Waßmann 2016-05-24 08:31:49 +02:00 committed by Philipp Zabel
parent 97a6075d7c
commit c82b4d73e2
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/imx/imx-ldb.c
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@ -25,6 +25,7 @@
#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
#include <linux/of_device.h> #include <linux/of_device.h>
#include <linux/of_graph.h> #include <linux/of_graph.h>
#include <video/of_display_timing.h>
#include <video/of_videomode.h> #include <video/of_videomode.h>
#include <linux/regmap.h> #include <linux/regmap.h>
#include <linux/videodev2.h> #include <linux/videodev2.h>
@ -625,7 +626,7 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
/* fallback to display-timings node */ /* fallback to display-timings node */
ret = of_get_drm_display_mode(child, ret = of_get_drm_display_mode(child,
&channel->mode, &channel->mode,
0); OF_USE_NATIVE_MODE);
if (!ret) if (!ret)
channel->mode_valid = 1; channel->mode_valid = 1;
} }