Re: [RFC PATCH 05/17] drm/exynos: dsi: Get the mode from bridge

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@amarulasolutions.com>
---
 drivers/gpu/drm/exynos/exynos_drm_dsi.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index d828be07c325..99a1b8c22313 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c

@@ -275,6 +275,7 @@ struct exynos_dsi {
        u32 format;

        int state;
+       struct drm_display_mode mode;
        struct drm_property *brightness;
        struct completion completed;

@@ -881,7 +882,7 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi)

 static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi)
 {
-       struct drm_display_mode *m = &dsi->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;

@@ -1411,6 +1412,15 @@ static void exynos_dsi_bridge_disable(struct drm_bridge *bridge)
        pm_runtime_put_sync(dsi->dev);
 }

+static void exynos_dsi_bridge_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_panel_or_bridge(struct exynos_dsi *dsi,
                                      struct device_node *node)
 {

@@ -1451,6 +1461,7 @@ static int exynos_dsi_bridge_attach(struct drm_bridge *bridge,
 static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = {
        .enable = exynos_dsi_bridge_enable,
        .disable = exynos_dsi_bridge_disable,
+       .mode_set = exynos_dsi_bridge_mode_set,