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Subject[PATCHv2 09/10] drm: omapdrm: crtc: get manual mode displays working
Date
From: Tony Lindgren <tony@atomide.com>

With manual mode displays we need to flush the panel manually.

Let's add flushing so we get Tomi's fbtest, kmstest, kmstest --flip,
and X and wayland working.

Signed-off-by: Tony Lindgren <tony@atomide.com>
[On Nokia N950]
Tested-By: Sebastian Reichel <sre@kernel.org>
---
drivers/gpu/drm/omapdrm/omap_crtc.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c
index 4601533215d6..e07b0a0be4bf 100644
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -97,6 +97,11 @@ bool omap_crtc_is_manual_updated(struct drm_crtc *crtc)
return omap_crtc->manually_updated;
}

+static void omap_crtc_manual_needs_flush(struct drm_crtc *crtc)
+{
+ omap_crtc_flush(crtc, 0, 0, 0, 0);
+}
+
/* -----------------------------------------------------------------------------
* DSS Manager Functions
*/
@@ -139,7 +144,11 @@ static void omap_crtc_dss_disconnect(enum omap_channel channel,

static void omap_crtc_dss_start_update(enum omap_channel channel)
{
+ struct omap_crtc *omap_crtc = omap_crtcs[channel];
+ struct drm_crtc *crtc = &omap_crtc->base;
+
dispc_mgr_enable(channel, true);
+ omap_crtc_manual_needs_flush(crtc);
}

/* Called only from the encoder enable/disable and suspend/resume handlers. */
@@ -155,11 +164,12 @@ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable)
if (WARN_ON(omap_crtc->enabled == enable))
return;

- if (omap_crtc_output[channel]->output_type == OMAP_DISPLAY_TYPE_HDMI) {
- dispc_mgr_enable(channel, enable);
- omap_crtc->enabled = enable;
+ dispc_mgr_enable(channel, enable);
+ omap_crtc->enabled = enable;
+ omap_crtc_manual_needs_flush(crtc);
+
+ if (omap_crtc_output[channel]->output_type == OMAP_DISPLAY_TYPE_HDMI)
return;
- }

if (omap_crtc->channel == OMAP_DSS_CHANNEL_DIGIT) {
/*
@@ -190,9 +200,6 @@ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable)
wait = omap_irq_wait_init(dev, vsync_irq, 2);
}

- dispc_mgr_enable(channel, enable);
- omap_crtc->enabled = enable;
-
ret = omap_irq_wait(dev, wait, msecs_to_jiffies(100));
if (ret) {
dev_err(dev->dev, "%s: timeout waiting for %s\n",
@@ -554,6 +561,7 @@ static void omap_crtc_atomic_flush(struct drm_crtc *crtc,
ret = drm_crtc_vblank_get(crtc);
WARN_ON(ret != 0);
}
+ omap_crtc_flush(&omap_crtc->base, 0, 0, 0, 0);

spin_lock_irq(&crtc->dev->event_lock);
dispc_mgr_enable(omap_crtc->channel, true);
--
2.11.0
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