Re: [PATCH RESEND v4 0/3] drm/bridge: sii9234: use extcon to detect cable attachment

[Henrik Grimler]

Hello,

Friendly ping! This series has been reviewed/tested and still applies
cleanly on drm-misc-next, could it be merged?

Best regards,
Henrik Grimler

On Tue, Jun 02, 2026 at 08:36:47PM +0200, Henrik Grimler wrote:
> Hi,
> 
> This series fixes so HDMI through the sii9234 MHL chip works when
> cable is hotplugged, by making the MHL chip use extcon cable detection
> functions. Patch 3, that actually implements the extcon parts, is heavily
> inspired by commit 688838442147 ("drm/bridge/sii8620: use micro-USB
> cable detection logic to detect MHL") by Maciej Purski.
> 
> Before these changes, HDMI only worked if cable was plugged in before
> booting. If no cable was connected, then wlr-randr still showed HDMI
> as connected, with 0x0 px, which confused at least some UIs (phosh)
> and caused problems:
> https://gitlab.gnome.org/World/Phosh/phosh/-/issues/828
> 
> Tested on exynos4412-i9305.
> 
> Best regards,
> Henrik Grimler
> 
> Signed-off-by: Henrik Grimler <henrik@xxxxxxxxxx>
> ---
> Changes in v4:
> - Collect tags
> - Link to v3: https://lore.kernel.org/r/20250824-exynos4-sii9234-driver-v3-0-80849e716a37@xxxxxxxxxx
> 
> Changes in v3:
> - Fix return of dev_err_probe in patch 2 and patch 3, spotted by
>   Dmitry and Marek respectively.
> - Change to depends on EXTCON || !EXTCON instead of select
> - Collect tags for patch 1 (not 3 since there were (minor) changes)
> - Link to v2: https://lore.kernel.org/r/20250724-exynos4-sii9234-driver-v2-0-faee244f1d40@xxxxxxxxxx
> 
> Changes in v2:
> - Add dependency on extcon in patch 3. Issue reported by kernel test robot <lkp@xxxxxxxxx>
> - Link to v1: https://lore.kernel.org/r/20250721-exynos4-sii9234-driver-v1-0-2e47ed02f677@xxxxxxxxxx
> 
> ---
> Henrik Grimler (3):
>       drm/bridge: sii9234: fix some typos in comments and messages
>       drm/bridge: sii9234: use dev_err_probe where applicable
>       drm/bridge: sii9234: use extcon cable detection logic to detect MHL
> 
>  drivers/gpu/drm/bridge/Kconfig   |   1 +
>  drivers/gpu/drm/bridge/sii9234.c | 124 +++++++++++++++++++++++++++++++--------
>  2 files changed, 102 insertions(+), 23 deletions(-)
> ---
> base-commit: a87fef0880c4f52769b5a3c2fc1b2d73aaa04eb3
> change-id: 20231218-exynos4-sii9234-driver-d817d4b511d5
> 
> Best regards,
> -- 
> Henrik Grimler <henrik@xxxxxxxxxx>
>