Message ID | 9153ce3f0281d57de817a3c8ea0f12530212808b.1590594512.git-series.maxime@cerno.tech (mailing list archive) |
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State | New, archived |
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Wed, 27 May 2020 11:50:39 -0400 (EDT) From: Maxime Ripard <maxime@cerno.tech> To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>, Eric Anholt <eric@anholt.net> Subject: [PATCH v3 052/105] drm/vc4: crtc: Clear the PixelValve FIFO on disable Date: Wed, 27 May 2020 17:48:22 +0200 Message-Id: <9153ce3f0281d57de817a3c8ea0f12530212808b.1590594512.git-series.maxime@cerno.tech> X-Mailer: git-send-email 2.26.2 In-Reply-To: <cover.aaf2100bd7da4609f8bcb8216247d4b4e4379639.1590594512.git-series.maxime@cerno.tech> References: <cover.aaf2100bd7da4609f8bcb8216247d4b4e4379639.1590594512.git-series.maxime@cerno.tech> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200527_085042_890956_CD3399F8 X-CRM114-Status: UNSURE ( 9.84 ) X-CRM114-Notice: Please train this message. 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Series |
drm/vc4: Support BCM2711 Display Pipeline
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diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index dee8dc7b9409..61e0945a8697 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -406,8 +406,7 @@ static void vc4_crtc_atomic_disable(struct drm_crtc *crtc, if (vc4_encoder->post_crtc_disable) vc4_encoder->post_crtc_disable(encoder); - CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) & ~PV_CONTROL_EN); - + vc4_crtc_pixelvalve_reset(crtc); vc4_hvs_atomic_disable(crtc, old_state); if (vc4_encoder->post_crtc_powerdown)
In order to avoid a stale pixel getting stuck on mode change or a disable / enable cycle, we need to make sure to flush the PV FIFO on disable. Signed-off-by: Maxime Ripard <maxime@cerno.tech> --- drivers/gpu/drm/vc4/vc4_crtc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)