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80 lines
2.3 KiB
Diff
80 lines
2.3 KiB
Diff
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From e45ba936655805527357beb72e0a09da6854c0d7 Mon Sep 17 00:00:00 2001
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From: Eric Anholt <eric@anholt.net>
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Date: Tue, 30 Jan 2018 14:21:02 -0800
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Subject: [PATCH] drm/vc4: Add missing enable/disable vblank handlers
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in fkms.
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Fixes hang at boot in 4.14.
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Signed-off-by: Eric Anholt <eric@anholt.net>
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---
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drivers/gpu/drm/vc4/vc4_crtc.c | 14 --------------
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drivers/gpu/drm/vc4/vc4_firmware_kms.c | 15 +++++++++++++++
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2 files changed, 15 insertions(+), 14 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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@@ -767,15 +767,8 @@ static void vc4_crtc_atomic_flush(struct
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static int vc4_enable_vblank(struct drm_crtc *crtc)
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{
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- struct drm_device *dev = crtc->dev;
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- struct vc4_dev *vc4 = to_vc4_dev(dev);
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struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
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- if (vc4->firmware_kms) {
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- /* XXX: Can we mask the SMI interrupt? */
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- return 0;
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- }
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-
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CRTC_WRITE(PV_INTEN, PV_INT_VFP_START);
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return 0;
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@@ -783,15 +776,8 @@ static int vc4_enable_vblank(struct drm_
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static void vc4_disable_vblank(struct drm_crtc *crtc)
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{
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- struct drm_device *dev = crtc->dev;
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- struct vc4_dev *vc4 = to_vc4_dev(dev);
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struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
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- if (vc4->firmware_kms) {
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- /* XXX: Can we mask the SMI interrupt? */
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- return;
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- }
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-
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CRTC_WRITE(PV_INTEN, 0);
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}
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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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@@ -433,6 +433,19 @@ static int vc4_page_flip(struct drm_crtc
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return drm_atomic_helper_page_flip(crtc, fb, event, flags, ctx);
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}
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+static int vc4_fkms_enable_vblank(struct drm_crtc *crtc)
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+{
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+ /* XXX: Need a way to enable/disable the interrupt, to avoid
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+ * DRM warnings at boot time.
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+ */
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+
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+ return 0;
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+}
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+
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+static void vc4_fkms_disable_vblank(struct drm_crtc *crtc)
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+{
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+}
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+
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static const struct drm_crtc_funcs vc4_crtc_funcs = {
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.set_config = drm_atomic_helper_set_config,
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.destroy = drm_crtc_cleanup,
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@@ -443,6 +456,8 @@ static const struct drm_crtc_funcs vc4_c
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.reset = drm_atomic_helper_crtc_reset,
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.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
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+ .enable_vblank = vc4_fkms_enable_vblank,
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+ .disable_vblank = vc4_fkms_disable_vblank,
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};
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static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
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