From 92cb1bedde9dba78d802fe2510949743a2581aed Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Thu, 25 Nov 2021 21:01:14 +0300 Subject: drm/msm/dsi: fix initialization in the bonded DSI case Commit 739b4e7756d3 ("drm/msm/dsi: Fix an error code in msm_dsi_modeset_init()") changed msm_dsi_modeset_init() to return an error code in case msm_dsi_manager_validate_current_config() returns false. However this is not an error case, but a slave DSI of the bonded DSI link. In this case msm_dsi_modeset_init() should return 0, but just skip connector and bridge initialization. To reduce possible confusion, drop the msm_dsi_manager_validate_current_config() function, and specif 'bonded && !master' condition directly in the msm_dsi_modeset_init(). Fixes: 739b4e7756d3 ("drm/msm/dsi: Fix an error code in msm_dsi_modeset_init()") Signed-off-by: Dmitry Baryshkov Reviewed-by: Abhinav Kumar Link: https://lore.kernel.org/r/20211125180114.561278-1-dmitry.baryshkov@linaro.org Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/dsi/dsi.c | 10 +++++++--- drivers/gpu/drm/msm/dsi/dsi.h | 1 - drivers/gpu/drm/msm/dsi/dsi_manager.c | 17 ----------------- 3 files changed, 7 insertions(+), 21 deletions(-) (limited to 'drivers/gpu/drm/msm') diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index 9670e548b3e9..052548883d27 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -223,9 +223,13 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, goto fail; } - if (!msm_dsi_manager_validate_current_config(msm_dsi->id)) { - ret = -EINVAL; - goto fail; + if (msm_dsi_is_bonded_dsi(msm_dsi) && + !msm_dsi_is_master_dsi(msm_dsi)) { + /* + * Do not return an eror here, + * Just skip creating encoder/connector for the slave-DSI. + */ + return 0; } msm_dsi->encoder = encoder; diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index f46df52c6985..c8dedc95428c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -82,7 +82,6 @@ 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); 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); void msm_dsi_manager_tpg_enable(void); /* msm dsi */ diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 681ca74fe410..f19bae475c96 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -645,23 +645,6 @@ fail: return ERR_PTR(ret); } -bool msm_dsi_manager_validate_current_config(u8 id) -{ - bool is_bonded_dsi = IS_BONDED_DSI(); - - /* - * For bonded DSI, we only have one drm panel. For this - * use case, we register only one bridge/connector. - * Skip bridge/connector initialisation if it is - * slave-DSI for bonded DSI configuration. - */ - if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id)) { - DBG("Skip bridge registration for slave DSI->id: %d\n", id); - return false; - } - return true; -} - /* initialize bridge */ struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) { -- cgit