011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
105 lines
3.6 KiB
Diff
105 lines
3.6 KiB
Diff
From fa69b17facd1a2fd3e430b78f65b60b4a087b53d Mon Sep 17 00:00:00 2001
|
|
From: Mario Kleiner <mario.kleiner.de@gmail.com>
|
|
Date: Tue, 19 Jul 2016 20:58:58 +0200
|
|
Subject: [PATCH] drm/vc4: Fix handling of interlaced video modes.
|
|
|
|
We must not apply CRTC_INTERLACE_HALVE_V to interlaced modes during
|
|
mode enumeration, as drm_helper_probe_single_connector_modes
|
|
does, so wrap it and reset the effect of CRTC_INTERLACE_HALVE_V
|
|
on affected interlaced modes.
|
|
|
|
Also mode_fixup interlaced modes passed in from user space.
|
|
|
|
This fixes the vblank timestamping constants and entries in
|
|
the mode->crtc_xxx fields needed for precise vblank timestamping.
|
|
|
|
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_crtc.c | 18 ++++++++++++++++++
|
|
drivers/gpu/drm/vc4/vc4_hdmi.c | 29 +++++++++++++++++++++++++++--
|
|
2 files changed, 45 insertions(+), 2 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
@@ -538,6 +538,23 @@ static void vc4_crtc_enable(struct drm_c
|
|
CRTC_READ(PV_V_CONTROL) | PV_VCONTROL_VIDEN);
|
|
}
|
|
|
|
+static bool vc4_crtc_mode_fixup(struct drm_crtc *crtc,
|
|
+ const struct drm_display_mode *mode,
|
|
+ struct drm_display_mode *adjusted_mode)
|
|
+{
|
|
+ /*
|
|
+ * Interlaced video modes got CRTC_INTERLACE_HALVE_V applied when
|
|
+ * coming from user space. We don't want this, as it screws up
|
|
+ * vblank timestamping, so fix it up.
|
|
+ */
|
|
+ drm_mode_set_crtcinfo(adjusted_mode, 0);
|
|
+
|
|
+ DRM_DEBUG_KMS("[CRTC:%d] adjusted_mode :\n", crtc->base.id);
|
|
+ drm_mode_debug_printmodeline(adjusted_mode);
|
|
+
|
|
+ return true;
|
|
+}
|
|
+
|
|
static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
|
|
struct drm_crtc_state *state)
|
|
{
|
|
@@ -848,6 +865,7 @@ static const struct drm_crtc_helper_func
|
|
.mode_set_nofb = vc4_crtc_mode_set_nofb,
|
|
.disable = vc4_crtc_disable,
|
|
.enable = vc4_crtc_enable,
|
|
+ .mode_fixup = vc4_crtc_mode_fixup,
|
|
.atomic_check = vc4_crtc_atomic_check,
|
|
.atomic_flush = vc4_crtc_atomic_flush,
|
|
};
|
|
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
|
|
@@ -219,10 +219,35 @@ vc4_hdmi_connector_best_encoder(struct d
|
|
return hdmi_connector->encoder;
|
|
}
|
|
|
|
+/*
|
|
+ * drm_helper_probe_single_connector_modes() applies drm_mode_set_crtcinfo to
|
|
+ * all modes with flag CRTC_INTERLACE_HALVE_V. We don't want this, as it
|
|
+ * screws up vblank timestamping for interlaced modes, so fix it up.
|
|
+ */
|
|
+static int vc4_hdmi_connector_probe_modes(struct drm_connector *connector,
|
|
+ uint32_t maxX, uint32_t maxY)
|
|
+{
|
|
+ struct drm_display_mode *mode;
|
|
+ int count;
|
|
+
|
|
+ count = drm_helper_probe_single_connector_modes(connector, maxX, maxY);
|
|
+ if (count == 0)
|
|
+ return 0;
|
|
+
|
|
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed adapted modes :\n",
|
|
+ connector->base.id, connector->name);
|
|
+ list_for_each_entry(mode, &connector->modes, head) {
|
|
+ drm_mode_set_crtcinfo(mode, 0);
|
|
+ drm_mode_debug_printmodeline(mode);
|
|
+ }
|
|
+
|
|
+ return count;
|
|
+}
|
|
+
|
|
static const struct drm_connector_funcs vc4_hdmi_connector_funcs = {
|
|
.dpms = drm_atomic_helper_connector_dpms,
|
|
.detect = vc4_hdmi_connector_detect,
|
|
- .fill_modes = drm_helper_probe_single_connector_modes,
|
|
+ .fill_modes = vc4_hdmi_connector_probe_modes,
|
|
.destroy = vc4_hdmi_connector_destroy,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
@@ -258,7 +283,7 @@ static struct drm_connector *vc4_hdmi_co
|
|
connector->polled = (DRM_CONNECTOR_POLL_CONNECT |
|
|
DRM_CONNECTOR_POLL_DISCONNECT);
|
|
|
|
- connector->interlace_allowed = 0;
|
|
+ connector->interlace_allowed = 1;
|
|
connector->doublescan_allowed = 0;
|
|
|
|
drm_mode_connector_attach_encoder(connector, encoder);
|