[PATCH 1/3] RFT: drm/pl111: Support grayscale
Fabian Vogt
fabian at ritter-vogt.de
Tue Jul 23 15:19:03 UTC 2019
Hi,
I gave the series a try (virtual CX and TP so far, will do on a real CX later):
OOPS with a nullptr deref during probe.
This diff which just moves some lines around fixes that and the LCD appears to
work properly.
Once I verified the 24bit depth and clock speed config on HW as well, I can
give you my Tested-by, or would you prefer that I resubmit your series with the
fix below?
Thanks,
Fabian
---
diff --git a/drivers/gpu/drm/pl111/pl111_display.c b/drivers/gpu/drm/pl111/pl111_display.c
index 587b4d148c18..bd84d7a5a0f4 100644
--- a/drivers/gpu/drm/pl111/pl111_display.c
+++ b/drivers/gpu/drm/pl111/pl111_display.c
@@ -133,10 +133,6 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe,
u32 cpl, tim2;
int ret;
- if (connector->display_info.num_bus_formats == 1 &&
- connector->display_info.bus_formats[0] == MEDIA_BUS_FMT_Y8_1X8)
- grayscale = true;
-
ret = clk_set_rate(priv->clk, mode->clock * 1000);
if (ret) {
dev_err(drm->dev,
@@ -191,6 +187,10 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe,
DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)
tim2 |= TIM2_IPC;
+ if (connector->display_info.num_bus_formats == 1 &&
+ connector->display_info.bus_formats[0] == MEDIA_BUS_FMT_Y8_1X8)
+ grayscale = true;
+
/*
* The AC pin bias frequency is set to max count when using
* grayscale so at least once in a while we will reverse
More information about the dri-devel
mailing list