From 03436e3ec69c8e026224a5f172e5d0431f722305 Mon Sep 17 00:00:00 2001 From: Sean Paul Date: Mon, 17 Jun 2019 16:12:58 -0400 Subject: [PATCH] drm/msm/dsi: Move setup_encoder to modeset_init Now that the panel probe/setup is in the modeset path, we can call dsi_manager_setup_encoder() in a common place for both internal and external bridge setups. Reviewed-by: Rob Clark Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20190617201301.133275-10-sean@poorly.run --- drivers/gpu/drm/msm/dsi/dsi.c | 2 ++ drivers/gpu/drm/msm/dsi/dsi.h | 2 +- drivers/gpu/drm/msm/dsi/dsi_host.c | 2 -- drivers/gpu/drm/msm/dsi/dsi_manager.c | 37 ++--------------------------------- 4 files changed, 5 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index 7b2a1e6..d45b0a4 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -250,6 +250,8 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, goto fail; } + msm_dsi_manager_setup_encoder(msm_dsi->id); + priv->bridges[priv->num_bridges++] = msm_dsi->bridge; priv->connectors[priv->num_connectors++] = msm_dsi->connector; diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index f8a6117..53bb124 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -96,7 +96,7 @@ struct drm_connector *msm_dsi_manager_connector_init(u8 id); struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id); int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg); bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len); -void msm_dsi_manager_attach_dsi_device(int id); +void msm_dsi_manager_setup_encoder(int id); int msm_dsi_manager_register(struct msm_dsi *msm_dsi); void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); bool msm_dsi_manager_validate_current_config(u8 id); diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index f6eb91c..1ae2f55 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1598,8 +1598,6 @@ static int dsi_host_attach(struct mipi_dsi_host *host, msm_host->format = dsi->format; msm_host->mode_flags = dsi->mode_flags; - msm_dsi_manager_attach_dsi_device(msm_host->id); - /* Some gpios defined in panel DT need to be controlled by host */ ret = dsi_host_init_panel_gpios(msm_host, &dsi->dev); if (ret) diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 630af00..ff39ce6 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -239,7 +239,7 @@ static bool dsi_mgr_is_cmd_mode(struct msm_dsi *msm_dsi) return !(host_flags & MIPI_DSI_MODE_VIDEO); } -static void msm_dsi_manager_setup_encoder(int id) +void msm_dsi_manager_setup_encoder(int id) { struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); struct msm_drm_private *priv = msm_dsi->dev->dev_private; @@ -280,12 +280,7 @@ static int msm_dsi_manager_panel_init(struct drm_connector *conn, u8 id) return PTR_ERR(panel); } - if (!panel) - return 0; - - msm_dsi_manager_setup_encoder(id); - - if (!IS_DUAL_DSI()) + if (!panel || !IS_DUAL_DSI()) goto out; drm_object_attach_property(&conn->base, @@ -790,34 +785,6 @@ bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len) return true; } -void msm_dsi_manager_attach_dsi_device(int id) -{ - struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); - struct drm_device *dev; - - /* - * drm_device pointer is assigned to msm_dsi only in the modeset_init - * path. If mipi_dsi_attach() happens in DSI driver's probe path - * (generally the case when we're connected to a drm_panel of the type - * mipi_dsi_device), this would be NULL. In such cases, try to set the - * encoder mode in the DSI connector's detect() op. - * - * msm_dsi pointer is assigned to a valid dsi device only when - * msm_dsi_manager_register() succeeds. When panel hasnt probed yet - * dsi_mgr_setup_components() could potentially return -EDEFER and - * assign the msm_dsi->dev to NULL. When the panel now probes and calls - * mipi_dsi_attach(), this will call msm_dsi_manager_attach_dsi_device() - * which will result in a NULL pointer dereference - */ - - dev = msm_dsi ? msm_dsi->dev : NULL; - - if (!dev) - return; - - msm_dsi_manager_setup_encoder(id); -} - int msm_dsi_manager_register(struct msm_dsi *msm_dsi) { struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; -- 2.7.4