From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELv/u17pDm7ESdiU+9WfjZZtSEhAPph9bXh71+q8CA1AYMIoS93KpwNvHRlDPAYR8ZTeW1Hm ARC-Seal: i=1; a=rsa-sha256; t=1519986070; cv=none; d=google.com; s=arc-20160816; b=iUjyWpZnVrSM0qGd3cEe+Fz/kHpHlxOrwIa1fwH7iElHeOBkBsB/qu24sb0SC1lzUu MsJPFqAgZGTF6M1HSBtlSNgpFTEm6xmTzz5o5Hyi1cU3eHwjkJFkpL0mlyPHKVFW0Zn0 OAmy08OpKFRZDq+pVZUbLh5S7C2Keub5TNO90TxQso2eNxoyLu+CqW/B3GjZ3wl45o0P wqARgPwOMy3l73KCXwqfroQqYzBJ6VAQQCmYHpt4jfEC4wdSEBKKtc6M6QMWwIArU5EC Wu410QWPmLz7j0ijAJ8QrIyIDgacRHvgbctN/RFBtJmqMUMuBFEGM15ntIaDpOFzCKwr c09g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=7euodGnnm469zz+riw4NyRfFuhFW/4o6YTtDK4y9Tw0=; b=pZipBYkQ2P2s+aR8QQd7tjqp7ksyJ6m8NFfnkiAkknLR2tkZdwgH2JM1IEPsl9zfed 9WqACUK3H7DvSf8vxDpg/4APIFXmLnjZ8gftrC/sZtSCwo/5zqjrM7oLqXG5mucg4UH1 aJWrWxVDoiNevo4V5U02Ky9Iw06+wtHbn2ETgsH/XrnVJDPmmsfAwpKU6nzJr2sDiXqq 3okXYNjNh1giSd1VabEw/5Kv+64+age7CWVU90RX3yXlWZ1UuZFapCaKIR/1zG0mT4DS Aehc1v1IsS5+33HLUBhxET4FIbiEWcdH5VxW+c+s10HKZeYkOcI159vkdEiMWUs+I6vr kR4A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of hdegoede@redhat.com designates 66.187.233.73 as permitted sender) smtp.mailfrom=hdegoede@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of hdegoede@redhat.com designates 66.187.233.73 as permitted sender) smtp.mailfrom=hdegoede@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com From: Hans de Goede To: Darren Hart , Andy Shevchenko , MyungJoo Ham , Chanwoo Choi , Mathias Nyman , Heikki Krogerus , Greg Kroah-Hartman , Guenter Roeck Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH v6 05/12] usb: typec: tcpm: Set USB role switch to device mode when configured as such Date: Fri, 2 Mar 2018 11:20:50 +0100 Message-Id: <20180302102057.8917-6-hdegoede@redhat.com> In-Reply-To: <20180302102057.8917-1-hdegoede@redhat.com> References: <20180302102057.8917-1-hdegoede@redhat.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1593820913904562465?= X-GMAIL-MSGID: =?utf-8?q?1593820913904562465?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Setting the mux to MUX_NONE and the switch to USB_SWITCH_DISCONNECT when the data-role is device is not correct. Plenty of devices support operating as USB device through a (separate) USB device controller. We really need 2 different versions of USB_SWITCH_CONNECT, USB_SWITCH_CONNECT_HOST and USB_SWITCH_DEVICE. Rather then modifying the tcpc_usb_switch enum for this, simply remove it and switch to the usb_role enum which provides exactly this, this will save use needing to convert betweent the 2 enums when calling an usb-role-switch driver later. Besides switching to the usb_role type, this commit also actually sets the mux to TYPEC_MUX_USB and the switch to USB_ROLE_DEVICE instead of setting both to none when the data-role is device. This commit also makes tcpm_reset_port() call tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE) so that the mux and switch do _not_ stay in their last mode after a detach. Reviewed-by: Heikki Krogerus Reviewed-by: Guenter Roeck Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede --- Changes in v4: -Add Andy's Reviewed-by Changes in v3: -Add Guenter's Reviewed-by Changes in v2: -Added Heikki's Reviewed-by --- drivers/usb/typec/tcpm.c | 22 +++++++++++----------- include/linux/usb/tcpm.h | 8 ++------ 2 files changed, 13 insertions(+), 17 deletions(-) diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index 7cd28b700a7f..00ca2822432f 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -618,15 +618,15 @@ void tcpm_pd_transmit_complete(struct tcpm_port *port, EXPORT_SYMBOL_GPL(tcpm_pd_transmit_complete); static int tcpm_mux_set(struct tcpm_port *port, enum tcpc_mux_mode mode, - enum tcpc_usb_switch config) + enum usb_role usb_role) { int ret = 0; - tcpm_log(port, "Requesting mux mode %d, config %d, polarity %d", - mode, config, port->polarity); + tcpm_log(port, "Requesting mux mode %d, usb-role %d, polarity %d", + mode, usb_role, port->polarity); if (port->tcpc->mux) - ret = port->tcpc->mux->set(port->tcpc->mux, mode, config, + ret = port->tcpc->mux->set(port->tcpc->mux, mode, usb_role, port->polarity); return ret; @@ -742,14 +742,15 @@ static int tcpm_set_attached_state(struct tcpm_port *port, bool attached) static int tcpm_set_roles(struct tcpm_port *port, bool attached, enum typec_role role, enum typec_data_role data) { + enum usb_role usb_role; int ret; if (data == TYPEC_HOST) - ret = tcpm_mux_set(port, TYPEC_MUX_USB, - TCPC_USB_SWITCH_CONNECT); + usb_role = USB_ROLE_HOST; else - ret = tcpm_mux_set(port, TYPEC_MUX_NONE, - TCPC_USB_SWITCH_DISCONNECT); + usb_role = USB_ROLE_DEVICE; + + ret = tcpm_mux_set(port, TYPEC_MUX_USB, usb_role); if (ret < 0) return ret; @@ -2096,7 +2097,7 @@ static int tcpm_src_attach(struct tcpm_port *port) out_disable_pd: port->tcpc->set_pd_rx(port->tcpc, false); out_disable_mux: - tcpm_mux_set(port, TYPEC_MUX_NONE, TCPC_USB_SWITCH_DISCONNECT); + tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE); return ret; } @@ -2140,6 +2141,7 @@ static void tcpm_reset_port(struct tcpm_port *port) tcpm_init_vconn(port); tcpm_set_current_limit(port, 0, 0); tcpm_set_polarity(port, TYPEC_POLARITY_CC1); + tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE); tcpm_set_attached_state(port, false); port->try_src_count = 0; port->try_snk_count = 0; @@ -2190,8 +2192,6 @@ static int tcpm_snk_attach(struct tcpm_port *port) static void tcpm_snk_detach(struct tcpm_port *port) { tcpm_detach(port); - - /* XXX: (Dis)connect SuperSpeed mux? */ } static int tcpm_acc_attach(struct tcpm_port *port) diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h index ca1c0b57f03f..268721bff2c1 100644 --- a/include/linux/usb/tcpm.h +++ b/include/linux/usb/tcpm.h @@ -16,6 +16,7 @@ #define __LINUX_USB_TCPM_H #include +#include #include #include "pd.h" @@ -97,11 +98,6 @@ struct tcpc_config { const struct typec_altmode_desc *alt_modes; }; -enum tcpc_usb_switch { - TCPC_USB_SWITCH_CONNECT, - TCPC_USB_SWITCH_DISCONNECT, -}; - /* Mux state attributes */ #define TCPC_MUX_USB_ENABLED BIT(0) /* USB enabled */ #define TCPC_MUX_DP_ENABLED BIT(1) /* DP enabled */ @@ -118,7 +114,7 @@ enum tcpc_mux_mode { struct tcpc_mux_dev { int (*set)(struct tcpc_mux_dev *dev, enum tcpc_mux_mode mux_mode, - enum tcpc_usb_switch usb_config, + enum usb_role usb_role, enum typec_cc_polarity polarity); bool dfp_only; void *priv_data; -- 2.14.3