As DSIM can now have a bridge connected as a peripheral, it should be possible to successfully enable exynos_dsi, when there is no panel provided.
Signed-off-by: Maciej Purski m.purski@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 8957faf..7d92e50 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1382,27 +1382,26 @@ static void exynos_dsi_enable(struct drm_encoder *encoder) if (dsi->state & DSIM_STATE_ENABLED) return;
- pm_runtime_get_sync(dsi->dev); - - dsi->state |= DSIM_STATE_ENABLED; - - ret = drm_panel_prepare(dsi->panel); - if (ret < 0) { - dsi->state &= ~DSIM_STATE_ENABLED; - return; + if (dsi->panel) { + ret = drm_panel_prepare(dsi->panel); + if (ret < 0) { + return; + } }
exynos_dsi_set_display_mode(dsi); exynos_dsi_set_display_enable(dsi, true);
- ret = drm_panel_enable(dsi->panel); - if (ret < 0) { - dsi->state &= ~DSIM_STATE_ENABLED; - exynos_dsi_set_display_enable(dsi, false); - drm_panel_unprepare(dsi->panel); - return; + if (dsi->panel) { + ret = drm_panel_enable(dsi->panel); + if (ret < 0) { + exynos_dsi_set_display_enable(dsi, false); + drm_panel_unprepare(dsi->panel); + return; + } }
+ dsi->state |= DSIM_STATE_ENABLED; dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE; }