From 6f054ec5b9ced3041f29541ae79402198678fc06 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Mon, 3 Aug 2015 14:08:33 +0530 Subject: [PATCH] drm/msm/dsi: Create a helper to check if there is a connected device Create a helper msm_dsi_device_connected() which checks whether we have a device connected to the dsi host or not. This check gets messy when we have support external bridges too. Having an inline function makes it more legible. For now, the check only consists of msm_dsi->panel being non-NULL. Later, this will check if we have an external bridge or not. This helper isn't used in dsi_connector related code as that's specific to only when a drm_panel is connected. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/dsi/dsi.c | 2 +- drivers/gpu/drm/msm/dsi/dsi.h | 5 +++++ drivers/gpu/drm/msm/dsi/dsi_manager.c | 6 ++++-- 3 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index 5c8fbc475831..ffaf77f623c6 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -15,7 +15,7 @@ struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi) { - if (!msm_dsi || !msm_dsi->panel) + if (!msm_dsi || !msm_dsi_device_connected(msm_dsi)) return NULL; return (msm_dsi->device_flags & MIPI_DSI_MODE_VIDEO) ? diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 1a5990551c15..1636513347e0 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -85,6 +85,11 @@ int msm_dsi_manager_register(struct msm_dsi *msm_dsi); void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); /* msm dsi */ +static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) +{ + return msm_dsi->panel; +} + struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); /* dsi pll */ diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index f43c66ca81fb..60dbd829d7a9 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -344,7 +344,8 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) int ret; DBG("id=%d", id); - if (!panel || (is_dual_dsi && (DSI_1 == id))) + if (!msm_dsi_device_connected(msm_dsi) || + (is_dual_dsi && (DSI_1 == id))) return; ret = msm_dsi_host_power_on(host); @@ -431,7 +432,8 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) DBG("id=%d", id); - if (!panel || (is_dual_dsi && (DSI_1 == id))) + if (!msm_dsi_device_connected(msm_dsi) || + (is_dual_dsi && (DSI_1 == id))) return; ret = drm_panel_disable(panel);