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[34.83.5.33]) by smtp.gmail.com with ESMTPSA id d191-20020a621dc8000000b0058193135f6bsm12330658pfd.84.2023.01.12.14.16.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Jan 2023 14:16:24 -0800 (PST) From: Prashant Malani To: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Cc: bleung@chromium.org, heikki.krogerus@linux.intel.com, Prashant Malani , Greg Kroah-Hartman Subject: [PATCH 1/3] usb: typec: Add retimer handle to port altmode Date: Thu, 12 Jan 2023 22:16:06 +0000 Message-Id: <20230112221609.540754-2-pmalani@chromium.org> X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog In-Reply-To: <20230112221609.540754-1-pmalani@chromium.org> References: <20230112221609.540754-1-pmalani@chromium.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754857355134708573?= X-GMAIL-MSGID: =?utf-8?q?1754857355134708573?= Just like it does with muxes, the Type-C bus code can update the state of connected retimers (especially when altmode-related transitions occur). Add a retimer handle to the port altmode struct to enable this. Signed-off-by: Prashant Malani Reviewed-by: Heikki Krogerus --- drivers/usb/typec/bus.h | 2 ++ drivers/usb/typec/class.c | 15 +++++++++++++-- 2 files changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/usb/typec/bus.h b/drivers/usb/typec/bus.h index 56dec268d4dd..c89168857417 100644 --- a/drivers/usb/typec/bus.h +++ b/drivers/usb/typec/bus.h @@ -7,11 +7,13 @@ struct bus_type; struct typec_mux; +struct typec_retimer; struct altmode { unsigned int id; struct typec_altmode adev; struct typec_mux *mux; + struct typec_retimer *retimer; enum typec_port_data roles; diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 5897905cb4f0..ed3d070b1ca4 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -583,6 +583,7 @@ void typec_unregister_altmode(struct typec_altmode *adev) { if (IS_ERR_OR_NULL(adev)) return; + typec_retimer_put(to_altmode(adev)->retimer); typec_mux_put(to_altmode(adev)->mux); device_unregister(&adev->dev); } @@ -2108,16 +2109,26 @@ typec_port_register_altmode(struct typec_port *port, { struct typec_altmode *adev; struct typec_mux *mux; + struct typec_retimer *retimer; mux = typec_mux_get(&port->dev, desc); if (IS_ERR(mux)) return ERR_CAST(mux); + retimer = typec_retimer_get(&port->dev); + if (IS_ERR(retimer)) { + typec_mux_put(mux); + return ERR_CAST(retimer); + } + adev = typec_register_altmode(&port->dev, desc); - if (IS_ERR(adev)) + if (IS_ERR(adev)) { + typec_retimer_put(retimer); typec_mux_put(mux); - else + } else { to_altmode(adev)->mux = mux; + to_altmode(adev)->retimer = retimer; + } return adev; }