[PATCH v4 5/6] drm: exynos: dsi: Get the mode from bridge

[Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>]

Now the exynos dsi driver is fully aware of bridge handling,
so get the display mode from bridge, mode_set API instead of
legacy encoder crtc.

This makes bridge usage more efficient instead of relying on
encoder stack.

Add mode_set in drm_bridge_funcs.

Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
---
Changes for v4, v3:
- none

 drivers/gpu/drm/exynos/exynos_drm_dsi.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 983e7cb65e2a..774ca265ed3b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -276,6 +276,7 @@ struct exynos_dsi {
 	u32 format;
 
 	int state;
+	struct drm_display_mode mode;
 	struct drm_property *brightness;
 	struct completion completed;
 
@@ -880,10 +881,9 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi)
 	return 0;
 }
 
-static void exynos_dsi_set_display_mode(struct drm_bridge *bridge)
+static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi)
 {
-	struct exynos_dsi *dsi = bridge_to_dsi(bridge);
-	struct drm_display_mode *m = &bridge->encoder->crtc->state->adjusted_mode;
+	struct drm_display_mode *m = &dsi->mode;
 	unsigned int num_bits_resol = dsi->driver_data->num_bits_resol;
 	u32 reg;
 
@@ -1398,7 +1398,7 @@ static void exynos_dsi_atomic_enable(struct drm_bridge *bridge,
 {
 	struct exynos_dsi *dsi = bridge_to_dsi(bridge);
 
-	exynos_dsi_set_display_mode(bridge);
+	exynos_dsi_set_display_mode(dsi);
 	exynos_dsi_set_display_enable(dsi, true);
 
 	dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE;
@@ -1428,6 +1428,15 @@ static void exynos_dsi_atomic_post_disable(struct drm_bridge *bridge,
 	pm_runtime_put_sync(dsi->dev);
 }
 
+static void exynos_dsi_mode_set(struct drm_bridge *bridge,
+				const struct drm_display_mode *mode,
+				const struct drm_display_mode *adjusted_mode)
+{
+	struct exynos_dsi *dsi = bridge_to_dsi(bridge);
+
+	drm_mode_copy(&dsi->mode, adjusted_mode);
+}
+
 static int exynos_dsi_attach(struct drm_bridge *bridge,
 			     enum drm_bridge_attach_flags flags)
 {
@@ -1444,6 +1453,7 @@ static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = {
 	.atomic_enable			= exynos_dsi_atomic_enable,
 	.atomic_disable			= exynos_dsi_atomic_disable,
 	.atomic_post_disable		= exynos_dsi_atomic_post_disable,
+	.mode_set			= exynos_dsi_mode_set,
 	.attach				= exynos_dsi_attach,
 };
 
-- 
2.25.1