Hi,
On 2018-10-26 12:40, Andrzej Hajda wrote:
> DSI device can be attached after DRM device is registered. In such
> case newly created connector must be registered by exynos_dsi.
> The patch fixes exynos_drm on rinato and trats boards.
>
> Fixes: 6afb7721e2a0 ("drm/exynos: move connector creation to attach callback")
> Reported-by: Marek Szyprowski <[email protected]>
> Signed-off-by: Andrzej Hajda <[email protected]>
v2 fixes the connector registration problem on Rinato and Trats board.
Thanks!
Tested-by: Marek Szyprowski <[email protected]>
> ---
> Hi,
>
> During just-before-send adjustements I have made horrible typo so there is v2.
>
> v2:
> - fixed if condition
> ---
> drivers/gpu/drm/exynos/exynos_drm_dsi.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> index 07af7758066d..ef5f19b084a6 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> @@ -14,6 +14,7 @@
>
> #include <drm/drmP.h>
> #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_fb_helper.h>
> #include <drm/drm_mipi_dsi.h>
> #include <drm/drm_panel.h>
> #include <drm/drm_atomic_helper.h>
> @@ -1474,12 +1475,12 @@ static int exynos_dsi_create_connector(struct
> drm_encoder *encoder)
> {
> struct exynos_dsi *dsi = encoder_to_dsi(encoder);
> struct drm_connector *connector = &dsi->connector;
> + struct drm_device *drm = encoder->dev;
> int ret;
>
> connector->polled = DRM_CONNECTOR_POLL_HPD;
>
> - ret = drm_connector_init(encoder->dev, connector,
> - &exynos_dsi_connector_funcs,
> + ret = drm_connector_init(drm, connector, &exynos_dsi_connector_funcs,
> DRM_MODE_CONNECTOR_DSI);
> if (ret) {
> DRM_ERROR("Failed to initialize connector with drm\n");
> @@ -1489,7 +1490,12 @@ static int exynos_dsi_create_connector(struct
> drm_encoder *encoder)
> connector->status = connector_status_disconnected;
> drm_connector_helper_add(connector, &exynos_dsi_connector_helper_funcs);
> drm_connector_attach_encoder(connector, encoder);
> + if (!drm->registered)
> + return 0;
>
> + connector->funcs->reset(connector);
> + drm_fb_helper_add_one_connector(drm->fb_helper, connector);
> + drm_connector_register(connector);
> return 0;
> }
>
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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