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openwrt/target/linux/bcm27xx/patches-6.6/950-0584-drm-vc4-crtc-Move-assigned_channel-to-a-variable.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
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>
2024-06-18 18:52:49 +02:00

48 lines
1.8 KiB
Diff

From 295e80d1c3c29084bb9874b08f320446c422fdcb Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Fri, 17 Feb 2023 13:39:13 +0100
Subject: [PATCH 0584/1085] drm/vc4: crtc: Move assigned_channel to a variable
We access multiple times the vc4_crtc_state->assigned_channel variable
in the vc4_crtc_get_scanout_position() function, so let's store it in a
local variable.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_crtc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -105,6 +105,7 @@ static bool vc4_crtc_get_scanout_positio
struct vc4_hvs *hvs = vc4->hvs;
struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state);
+ unsigned int channel = vc4_crtc_state->assigned_channel;
unsigned int cob_size;
u32 val;
int fifo_lines;
@@ -121,7 +122,7 @@ static bool vc4_crtc_get_scanout_positio
* Read vertical scanline which is currently composed for our
* pixelvalve by the HVS, and also the scaler status.
*/
- val = HVS_READ(SCALER_DISPSTATX(vc4_crtc_state->assigned_channel));
+ val = HVS_READ(SCALER_DISPSTATX(channel));
/* Get optional system timestamp after query. */
if (etime)
@@ -137,11 +138,11 @@ static bool vc4_crtc_get_scanout_positio
*vpos /= 2;
/* Use hpos to correct for field offset in interlaced mode. */
- if (vc4_hvs_get_fifo_frame_count(hvs, vc4_crtc_state->assigned_channel) % 2)
+ if (vc4_hvs_get_fifo_frame_count(hvs, channel) % 2)
*hpos += mode->crtc_htotal / 2;
}
- cob_size = vc4_crtc_get_cob_allocation(vc4, vc4_crtc_state->assigned_channel);
+ cob_size = vc4_crtc_get_cob_allocation(vc4, channel);
/* This is the offset we need for translating hvs -> pv scanout pos. */
fifo_lines = cob_size / mode->crtc_hdisplay;