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drm/msm/dsi: fix initialization in the bonded DSI case

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Commit 739b4e7756 ("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: 739b4e7756 ("drm/msm/dsi: Fix an error code in msm_dsi_modeset_init()")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://lore.kernel.org/r/20211125180114.561278-1-dmitry.baryshkov@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Dmitry Baryshkov 2021-11-25 21:01:14 +03:00 committed by Rob Clark
parent f7254785d1
commit 92cb1bedde
3 changed files with 7 additions and 21 deletions
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10
drivers/gpu/drm/msm/dsi/dsi.c
View File

@ -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;

1
drivers/gpu/drm/msm/dsi/dsi.h
View File

@ -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 */

17
drivers/gpu/drm/msm/dsi/dsi_manager.c
View File

@ -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)
{