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a1383655cf
Tested on bcm2710 (Raspberry Pi 3B). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From 236758b499086e0de280407396550125f1b6647a Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Tue, 9 Apr 2019 18:14:44 +0100
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Subject: [PATCH] from
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vc4_crtc_[en|dis]able
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vblank needs to be enabled and disabled by the driver to avoid the
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DRM framework complaining in the kernel log.
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vc4_fkms_disable_vblank needs to signal that we don't want vblank
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callbacks too.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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drivers/gpu/drm/vc4/vc4_firmware_kms.c | 7 +++++++
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1 file changed, 7 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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@@ -21,6 +21,7 @@
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#include "drm/drm_fourcc.h"
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#include "drm/drm_probe_helper.h"
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#include "drm/drm_drv.h"
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+#include "drm/drm_vblank.h"
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#include "linux/clk.h"
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#include "linux/debugfs.h"
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#include "drm/drm_fb_cma_helper.h"
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@@ -563,6 +564,8 @@ static void vc4_crtc_mode_set_nofb(struc
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static void vc4_crtc_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state)
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{
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+ drm_crtc_vblank_off(crtc);
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+
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/* Always turn the planes off on CRTC disable. In DRM, planes
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* are enabled/disabled through the update/disable hooks
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* above, and the CRTC enable/disable independently controls
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@@ -578,6 +581,7 @@ static void vc4_crtc_disable(struct drm_
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static void vc4_crtc_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state)
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{
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+ drm_crtc_vblank_on(crtc);
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/* Unblank the planes (if they're supposed to be displayed). */
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if (crtc->primary->state->fb)
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@@ -674,6 +678,9 @@ static int vc4_fkms_enable_vblank(struct
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static void vc4_fkms_disable_vblank(struct drm_crtc *crtc)
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{
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+ struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
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+
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+ vc4_crtc->vblank_enabled = false;
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}
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static const struct drm_crtc_funcs vc4_crtc_funcs = {
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