[PATCH v3 6/7] drm: exynos: dsi: Get the mode from bridge

[Jagan Teki]

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 <ja...@amarulasolutions.com>
---
Changes for v3:
- new patch

 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 feb36a5dc646..a2eb82bbb30f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -278,6 +278,7 @@ struct exynos_dsi {
        u32 format;
 
        int state;
+       struct drm_display_mode mode;
        struct drm_property *brightness;
        struct completion completed;
 
@@ -882,10 +883,9 @@ 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;
 
@@ -1400,7 +1400,7 @@ 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;
@@ -1430,6 +1430,15 @@ 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)
 {
@@ -1446,6 +1455,7 @@ 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