27c9d80f51
Some checks failed
Build Kernel / Build all affected Kernels (push) Has been cancelled
Build all core packages / Build all core packages for selected target (push) Has been cancelled
Build and Push prebuilt tools container / Build and Push all prebuilt containers (push) Has been cancelled
Build Toolchains / Build Toolchains for each target (push) Has been cancelled
Build host tools / Build host tools for linux and macos based systems (push) Has been cancelled
Coverity scan build / Coverity x86/64 build (push) Has been cancelled
37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From 1a8c3424507c67088915f2136edfba381c2fa4b9 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Thu, 13 Jan 2022 11:30:42 +0000
|
|
Subject: [PATCH 0017/1085] drm/vc4: Disable Gamma control on HVS5 due to
|
|
issues writing the table
|
|
|
|
Still under investigation, but the conditions under which the HVS
|
|
will accept values written to the gamma PWL are not straightforward.
|
|
|
|
Disable gamma on HVS5 again until it can be resolved to avoid
|
|
gamma being enabled with an incorrect table.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_crtc.c | 8 +-------
|
|
1 file changed, 1 insertion(+), 7 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
@@ -1357,15 +1357,9 @@ int __vc4_crtc_init(struct drm_device *d
|
|
|
|
if (!vc4->is_vc5) {
|
|
drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));
|
|
- } else {
|
|
- /* This is a lie for hvs5 which uses a 16 point PWL, but it
|
|
- * allows for something smarter than just 16 linearly spaced
|
|
- * segments. Conversion is done in vc5_hvs_update_gamma_lut.
|
|
- */
|
|
- drm_mode_crtc_set_gamma_size(crtc, 256);
|
|
+ drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
|
|
}
|
|
|
|
- drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
|
|
|
|
if (!vc4->is_vc5) {
|
|
/* We support CTM, but only for one CRTC at a time. It's therefore
|