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From: Neil Armstrong <neil.armstrong@linaro.org>
Subject: [PATCH v2 0/4] usb: typec-mux: broadcast typec state to next mux
 for ptn36502 & nb7vpq904m retimers
Date: Thu, 06 Jun 2024 15:11:12 +0200
Message-Id: <20240606-topic-sm8x50-upstream-retimer-broadcast-mode-v2-0-c6f6eae479c3@linaro.org>
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To: Heikki Krogerus <heikki.krogerus@linux.intel.com>, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Bjorn Andersson <andersson@kernel.org>, 
 Luca Weiss <luca.weiss@fairphone.com>, linux-arm-msm@vger.kernel.org, 
 linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, 
 Neil Armstrong <neil.armstrong@linaro.org>

In the Type-C graph, a retimer is usually in between the USB-C
connector and the USB3/DP combo PHY, and this PHY also requires the
USB-C mode events to properly set-up the SuperSpeed Lanes functions
to setup USB3-only, USB3 + DP Altmode or DP Altmode only on the 4 lanes.

Update the nb7vpq904m & ptn36502 retimers to get an optional type-c mux
on the next endpoint, and broadcast the received mode to it.

This makes it possible to support 4-lanes DP altmode on Qualcomm platforms.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
Changes in v2:
- Split out the typec_switch_put() fixes in separates fixes patches
- Link to v1: https://lore.kernel.org/r/20240527-topic-sm8x50-upstream-retimer-broadcast-mode-v1-0-79ec91381aba@linaro.org

---
Neil Armstrong (4):
      usb: typec-mux: ptn36502: unregister typec switch on probe error and remove
      usb: typec-mux: nb7vpq904m: unregister typec switch on probe error and remove
      usb: typec-mux: ptn36502: broadcast typec state to next mux
      usb: typec-mux: nb7vpq904m: broadcast typec state to next mux

 drivers/usb/typec/mux/nb7vpq904m.c | 29 +++++++++++++++++++++++++++--
 drivers/usb/typec/mux/ptn36502.c   | 33 ++++++++++++++++++++++++++++++---
 2 files changed, 57 insertions(+), 5 deletions(-)
---
base-commit: ee78a17615ad0cfdbbc27182b1047cd36c9d4d5f
change-id: 20240527-topic-sm8x50-upstream-retimer-broadcast-mode-76520768ac3f

Best regards,
-- 
Neil Armstrong <neil.armstrong@linaro.org>