This patch makes sure that mipi dsi driver makes it re-probe
in case that panel driver isn't probed yet.
For this, it checks if panel driver is probed or not before
component_add() is called.
Signed-off-by: Inki Dae <inki....@samsung.com>
Acked-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 38 +++++++++++++++----------------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 1421d9b..22503f3 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1166,11 +1166,8 @@ exynos_dsi_detect(struct drm_connector *connector, bool
force)
{
struct exynos_dsi *dsi = connector_to_dsi(connector);
- if (!dsi->panel) {
- dsi->panel = of_drm_find_panel(dsi->panel_node);
- if (dsi->panel)
- drm_panel_attach(dsi->panel, &dsi->connector);
- } else if (!dsi->panel_node) {
+ /* Power off if panel driver is removed. */
+ if (!dsi->panel_node) {
struct exynos_drm_display *display;
display = platform_get_drvdata(to_platform_device(dsi->dev));
@@ -1383,19 +1380,8 @@ static int exynos_dsi_bind(struct device *dev, struct
device *master,
void *data)
{
struct drm_device *drm_dev = data;
- struct exynos_dsi *dsi;
- int ret;
- ret = exynos_drm_create_enc_conn(drm_dev, &exynos_dsi_display);
- if (ret) {
- DRM_ERROR("Encoder create [%d] failed with %d\n",
- exynos_dsi_display.type, ret);
- return ret;
- }
-
- dsi = exynos_dsi_display.ctx;
-
- return mipi_dsi_host_register(&dsi->dsi_host);
+ return exynos_drm_create_enc_conn(drm_dev, &exynos_dsi_display);
}
static void exynos_dsi_unbind(struct device *dev, struct device *master,
@@ -1406,8 +1392,6 @@ static void exynos_dsi_unbind(struct device *dev, struct
device *master,
exynos_dsi_dpms(&exynos_dsi_display, DRM_MODE_DPMS_OFF);
- mipi_dsi_host_unregister(&dsi->dsi_host);
-
encoder->funcs->destroy(encoder);
drm_connector_cleanup(&dsi->connector);
}
@@ -1502,6 +1486,18 @@ static int exynos_dsi_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, &exynos_dsi_display);
+ ret = mipi_dsi_host_register(&dsi->dsi_host);
+ if (ret)
+ goto err_del_component;
+
+ dsi->panel = of_drm_find_panel(dsi->panel_node);
+ if (!dsi->panel) {
+ mipi_dsi_host_unregister(&dsi->dsi_host);
+ return -EPROBE_DEFER;
+ }
+
+ drm_panel_attach(dsi->panel, &dsi->connector);
+
ret = component_add(&pdev->dev, &exynos_dsi_component_ops);
if (ret)
goto err_del_component;
@@ -1515,6 +1511,10 @@ err_del_component:
static int exynos_dsi_remove(struct platform_device *pdev)
{
+ struct exynos_dsi *dsi = exynos_dsi_display.ctx;
+
+ mipi_dsi_host_unregister(&dsi->dsi_host);
+
component_del(&pdev->dev, &exynos_dsi_component_ops);
exynos_drm_component_del(&pdev->dev);
--
1.7.9.5
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