From 0bb70b82c2f91e4667f3c617505235efd6d77e46 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Wed, 11 Jan 2017 11:59:56 +0530 Subject: drm/msm/dsi: Set msm_dsi->encoders before initializing bridge The commit "drm: bridge: Link encoder and bridge in core code" updated the drm_bridge_attach() API to also include the drm_encoder pointer the bridge attaches to. The func msm_dsi_manager_bridge_init() now relies on the drm_encoder pointer stored in msm_dsi->encoders to pass the encoder to the bridge API. msm_dsi->encoders is unfortunately set after this function is called, resulting in us passing a NULL pointer to drm_brigde_attach. This results in an error and the DSI driver probe fails. Move the initialization of msm_dsi->encoders[] a bit up. Also, don't try to set the encoder's bridge. That's now managed by the bridge API. Cc: Laurent Pinchart Reviewed-by: Laurent Pinchart Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/dsi/dsi.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'drivers/gpu/drm/msm/dsi/dsi.c') diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index ec572f8389ed..9593238ccc1b 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -205,6 +205,9 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, goto fail; } + for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) + msm_dsi->encoders[i] = encoders[i]; + msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id); if (IS_ERR(msm_dsi->bridge)) { ret = PTR_ERR(msm_dsi->bridge); @@ -213,11 +216,6 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, goto fail; } - for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) { - encoders[i]->bridge = msm_dsi->bridge; - msm_dsi->encoders[i] = encoders[i]; - } - /* * check if the dsi encoder output is connected to a panel or an * external bridge. We create a connector only if we're connected to a -- cgit v1.2.3 From 97e00119534bf3c9f47c4eae0b7dd982ef2de92b Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Mon, 16 Jan 2017 09:42:03 +0530 Subject: drm/msm: Construct only one encoder for DSI We currently create 2 encoders for DSI interfaces, one for command mode and other for video mode operation. This isn't needed as we can't really use both the encoders at the same time. It also makes connecting bridges harder. Switch to creating a single encoder. For now, we assume that the encoder is configured only in video mode. Later, the same encoder would be usable in both modes. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/dsi/dsi.c | 14 +++++--------- drivers/gpu/drm/msm/dsi/dsi.h | 4 ++-- drivers/gpu/drm/msm/dsi/dsi_manager.c | 22 ++++------------------ drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 28 ++++++++++++---------------- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 20 ++++++-------------- drivers/gpu/drm/msm/msm_drv.h | 11 +++-------- 6 files changed, 32 insertions(+), 67 deletions(-) (limited to 'drivers/gpu/drm/msm/dsi/dsi.c') diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index 9593238ccc1b..311c1c1e7d6c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -18,9 +18,7 @@ struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi) if (!msm_dsi || !msm_dsi_device_connected(msm_dsi)) return NULL; - return (msm_dsi->device_flags & MIPI_DSI_MODE_VIDEO) ? - msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID] : - msm_dsi->encoders[MSM_DSI_CMD_ENCODER_ID]; + return msm_dsi->encoder; } static int dsi_get_phy(struct msm_dsi *msm_dsi) @@ -187,14 +185,13 @@ void __exit msm_dsi_unregister(void) } int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, - struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]) + struct drm_encoder *encoder) { struct msm_drm_private *priv = dev->dev_private; struct drm_bridge *ext_bridge; - int ret, i; + int ret; - if (WARN_ON(!encoders[MSM_DSI_VIDEO_ENCODER_ID] || - !encoders[MSM_DSI_CMD_ENCODER_ID])) + if (WARN_ON(!encoder)) return -EINVAL; msm_dsi->dev = dev; @@ -205,8 +202,7 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, goto fail; } - for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) - msm_dsi->encoders[i] = encoders[i]; + msm_dsi->encoder = encoder; msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id); if (IS_ERR(msm_dsi->bridge)) { diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 03f115f532c2..ddcda8cec9a7 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -73,8 +73,8 @@ struct msm_dsi { struct device *phy_dev; bool phy_enabled; - /* the encoders we are hooked to (outside of dsi block) */ - struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]; + /* the encoder we are hooked to (outside of dsi block) */ + struct drm_encoder *encoder; int id; }; diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 2bd8dad76105..19da23d8a0b1 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -540,7 +540,7 @@ struct drm_connector *msm_dsi_manager_connector_init(u8 id) struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); struct drm_connector *connector = NULL; struct dsi_connector *dsi_connector; - int ret, i; + int ret; dsi_connector = kzalloc(sizeof(*dsi_connector), GFP_KERNEL); if (!dsi_connector) @@ -566,9 +566,7 @@ struct drm_connector *msm_dsi_manager_connector_init(u8 id) connector->interlace_allowed = 0; connector->doublescan_allowed = 0; - for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) - drm_mode_connector_attach_encoder(connector, - msm_dsi->encoders[i]); + drm_mode_connector_attach_encoder(connector, msm_dsi->encoder); return connector; } @@ -591,13 +589,7 @@ struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) dsi_bridge->id = id; - /* - * HACK: we may not know the external DSI bridge device's mode - * flags here. We'll get to know them only when the device - * attaches to the dsi host. For now, assume the bridge supports - * DSI video mode - */ - encoder = msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID]; + encoder = msm_dsi->encoder; bridge = &dsi_bridge->base; bridge->funcs = &dsi_mgr_bridge_funcs; @@ -628,13 +620,7 @@ struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) ext_bridge = msm_dsi->external_bridge = msm_dsi_host_get_bridge(msm_dsi->host); - /* - * HACK: we may not know the external DSI bridge device's mode - * flags here. We'll get to know them only when the device - * attaches to the dsi host. For now, assume the bridge supports - * DSI video mode - */ - encoder = msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID]; + encoder = msm_dsi->encoder; /* link the internal dsi bridge to the external bridge */ drm_bridge_attach(encoder, ext_bridge, int_bridge); diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c index b782efd4b95f..94ea963519b2 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c @@ -260,8 +260,7 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms, struct drm_encoder *encoder; struct drm_connector *connector; struct device_node *panel_node; - struct drm_encoder *dsi_encs[MSM_DSI_ENCODER_NUM]; - int i, dsi_id; + int dsi_id; int ret; switch (intf_type) { @@ -322,22 +321,19 @@ static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms, if (!priv->dsi[dsi_id]) break; - for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) { - dsi_encs[i] = mdp4_dsi_encoder_init(dev); - if (IS_ERR(dsi_encs[i])) { - ret = PTR_ERR(dsi_encs[i]); - dev_err(dev->dev, - "failed to construct DSI encoder: %d\n", - ret); - return ret; - } - - /* TODO: Add DMA_S later? */ - dsi_encs[i]->possible_crtcs = 1 << DMA_P; - priv->encoders[priv->num_encoders++] = dsi_encs[i]; + encoder = mdp4_dsi_encoder_init(dev); + if (IS_ERR(encoder)) { + ret = PTR_ERR(encoder); + dev_err(dev->dev, + "failed to construct DSI encoder: %d\n", ret); + return ret; } - ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, dsi_encs); + /* TODO: Add DMA_S later? */ + encoder->possible_crtcs = 1 << DMA_P; + priv->encoders[priv->num_encoders++] = encoder; + + ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, encoder); if (ret) { dev_err(dev->dev, "failed to initialize DSI: %d\n", ret); diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index c396d459a9d0..5bad72c9e253 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -369,9 +369,6 @@ static int modeset_init_intf(struct mdp5_kms *mdp5_kms, int intf_num) case INTF_DSI: { int dsi_id = get_dsi_id_from_intf(hw_cfg, intf_num); - struct drm_encoder *dsi_encs[MSM_DSI_ENCODER_NUM]; - enum mdp5_intf_mode mode; - int i; if ((dsi_id >= ARRAY_SIZE(priv->dsi)) || (dsi_id < 0)) { dev_err(dev->dev, "failed to find dsi from intf %d\n", @@ -389,19 +386,14 @@ static int modeset_init_intf(struct mdp5_kms *mdp5_kms, int intf_num) break; } - for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) { - mode = (i == MSM_DSI_CMD_ENCODER_ID) ? - MDP5_INTF_DSI_MODE_COMMAND : - MDP5_INTF_DSI_MODE_VIDEO; - dsi_encs[i] = construct_encoder(mdp5_kms, INTF_DSI, - intf_num, mode, ctl); - if (IS_ERR(dsi_encs[i])) { - ret = PTR_ERR(dsi_encs[i]); - break; - } + encoder = construct_encoder(mdp5_kms, INTF_DSI, intf_num, + MDP5_INTF_DSI_MODE_VIDEO, ctl); + if (IS_ERR(encoder)) { + ret = PTR_ERR(encoder); + break; } - ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, dsi_encs); + ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, encoder); break; } default: diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 5f6f48f4fbd9..cdd7b2f8e977 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -275,16 +275,11 @@ int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev, struct drm_encoder *encoder); struct msm_dsi; -enum msm_dsi_encoder_id { - MSM_DSI_VIDEO_ENCODER_ID = 0, - MSM_DSI_CMD_ENCODER_ID = 1, - MSM_DSI_ENCODER_NUM = 2 -}; #ifdef CONFIG_DRM_MSM_DSI void __init msm_dsi_register(void); void __exit msm_dsi_unregister(void); int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, - struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]); + struct drm_encoder *encoder); #else static inline void __init msm_dsi_register(void) { @@ -293,8 +288,8 @@ static inline void __exit msm_dsi_unregister(void) { } static inline int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, - struct drm_device *dev, - struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]) + struct drm_device *dev, + struct drm_encoder *encoder) { return -EINVAL; } -- cgit v1.2.3