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Subject[PATCHv2 05/10] drm: omapdrm: crtc: detect manually updated displays
Date
Signed-off-by: Sebastian Reichel <sre@kernel.org>
[tony@atomide.com: rebased on event_lock changes]
---
drivers/gpu/drm/omapdrm/dss/omapdss.h | 1 +
drivers/gpu/drm/omapdrm/dss/output.c | 6 ++++++
drivers/gpu/drm/omapdrm/omap_connector.c | 7 +++++++
drivers/gpu/drm/omapdrm/omap_crtc.c | 29 +++++++++++++++++++++++++++--
drivers/gpu/drm/omapdrm/omap_drv.h | 2 ++
5 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 5b3b961127bd..5666ecbe4b80 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -918,5 +918,6 @@ int dss_mgr_register_framedone_handler(enum omap_channel channel,
void (*handler)(void *), void *data);
void dss_mgr_unregister_framedone_handler(enum omap_channel channel,
void (*handler)(void *), void *data);
+bool dss_lcd_mgr_config_get_stallmode(const struct dss_lcd_mgr_config *config);

#endif /* __OMAP_DRM_DSS_H */
diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index a901af5a9bc3..08c730d1dada 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -214,6 +214,12 @@ void dss_mgr_set_lcd_config(enum omap_channel channel,
}
EXPORT_SYMBOL(dss_mgr_set_lcd_config);

+bool dss_lcd_mgr_config_get_stallmode(const struct dss_lcd_mgr_config *config)
+{
+ return config->stallmode;
+}
+EXPORT_SYMBOL(dss_lcd_mgr_config_get_stallmode);
+
int dss_mgr_enable(enum omap_channel channel)
{
return dss_mgr_ops->enable(channel);
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index 7b2a9f680dce..b09d8989b789 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -35,6 +35,13 @@ struct omap_connector {
bool hdmi_mode;
};

+bool omap_connector_get_manually_updated(struct drm_connector *connector)
+{
+ struct omap_connector *omap_connector = to_omap_connector(connector);
+
+ return !!(omap_connector->dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE);
+}
+
bool omap_connector_get_hdmi_mode(struct drm_connector *connector)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c
index 76a411fe957a..03351ca2ee41 100644
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -35,6 +35,7 @@ struct omap_crtc {
enum omap_channel channel;

struct videomode vm;
+ bool manually_updated;

bool ignore_digit_sync_lost;

@@ -89,6 +90,12 @@ int omap_crtc_wait_pending(struct drm_crtc *crtc)
msecs_to_jiffies(250));
}

+bool omap_crtc_is_manual_updated(struct drm_crtc *crtc)
+{
+ struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+ return omap_crtc->manually_updated;
+}
+
/* -----------------------------------------------------------------------------
* DSS Manager Functions
*/
@@ -237,6 +244,9 @@ static void omap_crtc_dss_set_lcd_config(enum omap_channel channel,
{
struct omap_crtc *omap_crtc = omap_crtcs[channel];
DBG("%s", omap_crtc->name);
+
+ omap_crtc->manually_updated = dss_lcd_mgr_config_get_stallmode(config);
+
dispc_mgr_set_lcd_config(omap_crtc->channel, config);
}

@@ -355,10 +365,23 @@ static void omap_crtc_destroy(struct drm_crtc *crtc)
static void omap_crtc_enable(struct drm_crtc *crtc)
{
struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+ struct drm_connector *connector;
int ret;

DBG("%s", omap_crtc->name);

+ /* manual updated display will not trigger vsync irq */
+ /* omap_crtc->manually_updated is not yet set */
+ drm_for_each_connector(connector, crtc->dev) {
+ if (connector->state->crtc != crtc)
+ continue;
+ if (!omap_connector_get_manually_updated(connector))
+ continue;
+ dev_dbg(dev->dev, "manually updated display detected!");
+ return;
+ }
+
spin_lock_irq(&crtc->dev->event_lock);
drm_crtc_vblank_on(crtc);
ret = drm_crtc_vblank_get(crtc);
@@ -440,8 +463,10 @@ static void omap_crtc_atomic_flush(struct drm_crtc *crtc,

DBG("%s: GO", omap_crtc->name);

- ret = drm_crtc_vblank_get(crtc);
- WARN_ON(ret != 0);
+ if (!omap_crtc->manually_updated) {
+ ret = drm_crtc_vblank_get(crtc);
+ WARN_ON(ret != 0);
+ }

spin_lock_irq(&crtc->dev->event_lock);
dispc_mgr_go(omap_crtc->channel);
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h
index 5b1061586401..5a0106239be2 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.h
+++ b/drivers/gpu/drm/omapdrm/omap_drv.h
@@ -139,6 +139,7 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev,
int omap_crtc_wait_pending(struct drm_crtc *crtc);
void omap_crtc_error_irq(struct drm_crtc *crtc, uint32_t irqstatus);
void omap_crtc_vblank_irq(struct drm_crtc *crtc);
+bool omap_crtc_is_manual_updated(struct drm_crtc *crtc);

struct drm_plane *omap_plane_init(struct drm_device *dev,
int id, enum drm_plane_type type,
@@ -155,6 +156,7 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
struct drm_encoder *omap_connector_attached_encoder(
struct drm_connector *connector);
bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
+bool omap_connector_get_manually_updated(struct drm_connector *connector);
void omap_connector_flush(struct drm_connector *connector,
int x, int y, int w, int h);

--
2.11.0
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