The comment on top of of_get_drm_display_mode says:
* This function is expensive and should only be used, if only one mode is to be
* read from DT. To get multiple modes start with of_get_display_timings and
* work with that instead.
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: driverdev-devel@xxxxxxxxxxxxxxxxxxxxxx
Cc: David Airlie <airlied@xxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
Cc: Sascha Hauer <kernel@xxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Eric Bénard <eric@xxxxxxxxxx>
Signed-off-by: Denis Carikli <denis@xxxxxxxxxx>
---
drivers/staging/imx-drm/parallel-display.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/imx-drm/parallel-display.c b/drivers/staging/imx-drm/parallel-display.c
index 24aa9be..c04b017 100644
--- a/drivers/staging/imx-drm/parallel-display.c
+++ b/drivers/staging/imx-drm/parallel-display.c
@@ -23,6 +23,8 @@
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>
#include <linux/videodev2.h>
+#include <video/videomode.h>
+#include <video/of_display_timing.h>
#include "imx-drm.h"
@@ -74,11 +76,25 @@ static int imx_pd_connector_get_modes(struct drm_connector *connector)
if (np) {
struct drm_display_mode *mode = drm_mode_create(connector->dev);
- of_get_drm_display_mode(np, &imxpd->mode, 0);
- drm_mode_copy(mode, &imxpd->mode);
- mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
- drm_mode_probed_add(connector, mode);
- num_modes++;
+ struct display_timings *timings;
+ struct videomode vm;
+ int np_num_mode;
+
+ timings = of_get_display_timings(np);
+ if (!timings)
+ return num_modes;
+ for (np_num_mode = 0; np_num_mode < timings->num_timings;
+ np_num_mode++, num_modes++) {
+ if (videomode_from_timings(timings, &vm, np_num_mode))
+ break;
+ drm_display_mode_from_videomode(&vm, mode);
+ mode->type = DRM_MODE_TYPE_DRIVER;
+ if (timings->native_mode == np_num_mode)
+ mode->type |= DRM_MODE_TYPE_PREFERRED;
+
+ drm_mode_set_name(mode);
+ drm_mode_probed_add(connector, mode);
+ }
}
return num_modes;
--
1.7.9.5
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