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8c405cdccc
The patches were generated from the RPi repo with the following command: git format-patch v6.6.34..rpi-6.1.y Some patches needed rebasing and, as usual, the applied and reverted, wireless drivers, Github workflows, READMEs and defconfigs patches were removed. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From 1a8c3424507c67088915f2136edfba381c2fa4b9 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Thu, 13 Jan 2022 11:30:42 +0000
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Subject: [PATCH 0017/1085] drm/vc4: Disable Gamma control on HVS5 due to
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issues writing the table
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Still under investigation, but the conditions under which the HVS
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will accept values written to the gamma PWL are not straightforward.
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Disable gamma on HVS5 again until it can be resolved to avoid
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gamma being enabled with an incorrect table.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_crtc.c | 8 +-------
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1 file changed, 1 insertion(+), 7 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_crtc.c
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+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
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@@ -1357,15 +1357,9 @@ int __vc4_crtc_init(struct drm_device *d
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if (!vc4->is_vc5) {
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drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));
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- } else {
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- /* This is a lie for hvs5 which uses a 16 point PWL, but it
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- * allows for something smarter than just 16 linearly spaced
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- * segments. Conversion is done in vc5_hvs_update_gamma_lut.
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- */
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- drm_mode_crtc_set_gamma_size(crtc, 256);
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+ drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
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}
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- drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
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if (!vc4->is_vc5) {
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/* We support CTM, but only for one CRTC at a time. It's therefore
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