Failing to read out rawclk makes it impossible to read out backlight,
which results in backlight not working when the backlight is off during
boot, or when reloading the module.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Fixes: 44e694958b95 ("drm/xe/display: Implement display support")
Cc: <stable@xxxxxxxxxxxxxxx> # v6.8+
---
drivers/gpu/drm/xe/display/xe_display.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
index 30dfdac9f6fa9..79add15c6c4c7 100644
--- a/drivers/gpu/drm/xe/display/xe_display.c
+++ b/drivers/gpu/drm/xe/display/xe_display.c
@@ -159,6 +159,9 @@ int xe_display_init_noirq(struct xe_device *xe)
intel_display_device_info_runtime_init(xe);
+ RUNTIME_INFO(xe)->rawclk_freq = intel_read_rawclk(xe);
+ drm_dbg(&xe->drm, "rawclk rate: %d kHz\n", RUNTIME_INFO(xe)->rawclk_freq);
+
err = intel_display_driver_probe_noirq(xe);
if (err) {
intel_opregion_cleanup(display);
--
2.45.2
