diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0101-drm-vc4-Add-missing-enable-disable-vblank-handlers-i.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0101-drm-vc4-Add-missing-enable-disable-vblank-handlers-i.patch | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0101-drm-vc4-Add-missing-enable-disable-vblank-handlers-i.patch b/target/linux/bcm27xx/patches-5.4/950-0101-drm-vc4-Add-missing-enable-disable-vblank-handlers-i.patch new file mode 100644 index 0000000000..9800edf726 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0101-drm-vc4-Add-missing-enable-disable-vblank-handlers-i.patch @@ -0,0 +1,79 @@ +From e45ba936655805527357beb72e0a09da6854c0d7 Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Tue, 30 Jan 2018 14:21:02 -0800 +Subject: [PATCH] drm/vc4: Add missing enable/disable vblank handlers + in fkms. + +Fixes hang at boot in 4.14. + +Signed-off-by: Eric Anholt <eric@anholt.net> +--- + drivers/gpu/drm/vc4/vc4_crtc.c | 14 -------------- + drivers/gpu/drm/vc4/vc4_firmware_kms.c | 15 +++++++++++++++ + 2 files changed, 15 insertions(+), 14 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_crtc.c ++++ b/drivers/gpu/drm/vc4/vc4_crtc.c +@@ -767,15 +767,8 @@ static void vc4_crtc_atomic_flush(struct + + static int vc4_enable_vblank(struct drm_crtc *crtc) + { +- struct drm_device *dev = crtc->dev; +- struct vc4_dev *vc4 = to_vc4_dev(dev); + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + +- if (vc4->firmware_kms) { +- /* XXX: Can we mask the SMI interrupt? */ +- return 0; +- } +- + CRTC_WRITE(PV_INTEN, PV_INT_VFP_START); + + return 0; +@@ -783,15 +776,8 @@ static int vc4_enable_vblank(struct drm_ + + static void vc4_disable_vblank(struct drm_crtc *crtc) + { +- struct drm_device *dev = crtc->dev; +- struct vc4_dev *vc4 = to_vc4_dev(dev); + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + +- if (vc4->firmware_kms) { +- /* XXX: Can we mask the SMI interrupt? */ +- return; +- } +- + CRTC_WRITE(PV_INTEN, 0); + } + +--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c +@@ -433,6 +433,19 @@ static int vc4_page_flip(struct drm_crtc + return drm_atomic_helper_page_flip(crtc, fb, event, flags, ctx); + } + ++static int vc4_fkms_enable_vblank(struct drm_crtc *crtc) ++{ ++ /* XXX: Need a way to enable/disable the interrupt, to avoid ++ * DRM warnings at boot time. ++ */ ++ ++ return 0; ++} ++ ++static void vc4_fkms_disable_vblank(struct drm_crtc *crtc) ++{ ++} ++ + static const struct drm_crtc_funcs vc4_crtc_funcs = { + .set_config = drm_atomic_helper_set_config, + .destroy = drm_crtc_cleanup, +@@ -443,6 +456,8 @@ static const struct drm_crtc_funcs vc4_c + .reset = drm_atomic_helper_crtc_reset, + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, ++ .enable_vblank = vc4_fkms_enable_vblank, ++ .disable_vblank = vc4_fkms_disable_vblank, + }; + + static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = { |