[PATCH v3 drm-dp 5/8] drm/hisilicon/hibmc: Getting connector info and EDID by using AUX channel

[Dmitry Baryshkov]

On Sat, Feb 22, 2025 at 10:50:58AM +0800, Yongbang Shi wrote:
> From: Baihan Li <libaihan at huawei.com>
> 
> Add registering drm_aux and use it to get connector edid with drm
> functions. Add ddc channel in connector initialization to put drm_aux
> in drm_connector. And also add detect callback to detect connector
> befored call connector_get_modes.
> 
> Signed-off-by: Baihan Li <libaihan at huawei.com>
> Signed-off-by: Yongbang Shi <shiyongbang at huawei.com>
> ---
> ChangeLog:
> v2 -> v3:
>   - Capitalized EDID and AUX, suggested by Dmitry Baryshkov.
> v1 -> v2:
>   - deleting type conversion, suggested by Dmitry Baryshkov.
>   - deleting hibmc_dp_connector_get_modes() and using drm_connector_helper_get_modes(), suggested by Dmitry Baryshkov.
> ---
>  drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.c   |  3 +-
>  .../gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c    | 33 ++++++++++++++++---
>  .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h   |  5 +++
>  3 files changed, 35 insertions(+), 6 deletions(-)
> 
>  
>  static const struct drm_connector_helper_funcs hibmc_dp_conn_helper_funcs = {
>  	.get_modes = hibmc_dp_connector_get_modes,
> +	.detect_ctx = drm_connector_helper_detect_from_ddc,

I think a proper .detect callback should be reading sink_count. Most
likely it will work though.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>


>  };
>  

-- 
With best wishes
Dmitry