From patchwork Tue Sep 12 00:57:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Patel, Utkarsh H" X-Patchwork-Id: 13380446 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 47962EC3 for ; Tue, 12 Sep 2023 00:58:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694480291; x=1726016291; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=rEPVszd2PfLx0DL7ctawFVM+biTkgAmXoll47AaRM6Y=; b=AVgSt+kGMcTe1esKuo3XZOmWgie/N593qpJ1VflndeoYsDLffm+KMj5Z dYBt42lCo/U4NVDcSICEfw8zjGJFZ0rltpyZGG4FubyPM4726Nqzymhv7 tVTN4ygP3zJColpddoVKJTuxYLnU5mF9S4v6UD3/iyXOR3B5ATSCnhWNZ sHZQCYeCVjuCbOClia2smLDEKopXrpkCVECfygemxcSyH9BFEdaOls8sr wP0xbKw7rIB9lsAZcwG+9cWKqI8MUr2FGxHPOKWou9APr+WwnGKB1p7L4 0YJb1ySEhRJAHQpxYbOd1fqHB3bKFVrUfx2mQyJBBEG3nZNn7M3ChbljK A==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="382057897" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="382057897" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 17:58:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="858570604" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="858570604" Received: from uhpatel-desk4.jf.intel.com ([10.23.15.200]) by fmsmga002.fm.intel.com with ESMTP; 11 Sep 2023 17:58:10 -0700 From: Utkarsh Patel To: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, heikki.krogerus@linux.intel.com, pmalani@chromium.org Cc: chrome-platform@lists.linux.dev, andriy.shevchenko@linux.intel.com, bleung@chromium.org, Utkarsh Patel Subject: [PATCH v3 1/4] usb: typec: Add Displayport Alternate Mode 2.1 Support Date: Mon, 11 Sep 2023 17:57:49 -0700 Message-Id: <20230912005752.1532888-2-utkarsh.h.patel@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230912005752.1532888-1-utkarsh.h.patel@intel.com> References: <20230912005752.1532888-1-utkarsh.h.patel@intel.com> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Displayport Alternate mode 2.1 requires configuration for additional cable details such as signalling for cable, UHBR13.5 Support, Cable type and DPAM version. These details can be used with mux drivers to configure SOP DP configuration for Displayport Alternate mode 2.1. This change also includes pertinent cable signalling support in displayport alternate mode. Reviewed-by: Andy Shevchenko Reviewed-by: Heikki Krogerus Signed-off-by: Utkarsh Patel --- Changes in v3: - No change. Changes in v2: - No change. drivers/usb/typec/altmodes/displayport.c | 5 ++++- drivers/usb/typec/ucsi/displayport.c | 2 +- drivers/usb/typec/ucsi/ucsi_ccg.c | 4 ++-- include/linux/usb/typec_dp.h | 28 ++++++++++++++++++++---- 4 files changed, 31 insertions(+), 8 deletions(-) diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index 426c88a516e5..f503cb4cd721 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -86,8 +86,11 @@ static int dp_altmode_notify(struct dp_altmode *dp) static int dp_altmode_configure(struct dp_altmode *dp, u8 con) { - u32 conf = DP_CONF_SIGNALING_DP; /* Only DP signaling supported */ u8 pin_assign = 0; + u32 conf; + + /* DP Signalling */ + conf = (dp->data.conf & DP_CONF_SIGNALLING_MASK) >> DP_CONF_SIGNALLING_SHIFT; switch (con) { case DP_STATUS_CON_DISABLED: diff --git a/drivers/usb/typec/ucsi/displayport.c b/drivers/usb/typec/ucsi/displayport.c index 73cd5bf35047..d9d3c91125ca 100644 --- a/drivers/usb/typec/ucsi/displayport.c +++ b/drivers/usb/typec/ucsi/displayport.c @@ -315,7 +315,7 @@ struct typec_altmode *ucsi_register_displayport(struct ucsi_connector *con, struct ucsi_dp *dp; /* We can't rely on the firmware with the capabilities. */ - desc->vdo |= DP_CAP_DP_SIGNALING | DP_CAP_RECEPTACLE; + desc->vdo |= DP_CAP_DP_SIGNALLING(0) | DP_CAP_RECEPTACLE; /* Claiming that we support all pin assignments */ desc->vdo |= all_assignments << 8; diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c index 607061a37eca..449c125f6f87 100644 --- a/drivers/usb/typec/ucsi/ucsi_ccg.c +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c @@ -501,8 +501,8 @@ static void ucsi_ccg_nvidia_altmode(struct ucsi_ccg *uc, case NVIDIA_FTB_DP_OFFSET: if (alt[0].mid == USB_TYPEC_NVIDIA_VLINK_DBG_VDO) alt[0].mid = USB_TYPEC_NVIDIA_VLINK_DP_VDO | - DP_CAP_DP_SIGNALING | DP_CAP_USB | - DP_CONF_SET_PIN_ASSIGN(BIT(DP_PIN_ASSIGN_E)); + DP_CAP_DP_SIGNALLING(0) | DP_CAP_USB | + DP_CONF_SET_PIN_ASSIGN(BIT(DP_PIN_ASSIGN_E)); break; case NVIDIA_FTB_DBG_OFFSET: if (alt[0].mid == USB_TYPEC_NVIDIA_VLINK_DP_VDO) diff --git a/include/linux/usb/typec_dp.h b/include/linux/usb/typec_dp.h index 8d09c2f0a9b8..1f358098522d 100644 --- a/include/linux/usb/typec_dp.h +++ b/include/linux/usb/typec_dp.h @@ -67,8 +67,10 @@ enum { #define DP_CAP_UFP_D 1 #define DP_CAP_DFP_D 2 #define DP_CAP_DFP_D_AND_UFP_D 3 -#define DP_CAP_DP_SIGNALING BIT(2) /* Always set */ -#define DP_CAP_GEN2 BIT(3) /* Reserved after v1.0b */ +#define DP_CAP_DP_SIGNALLING(_cap_) (((_cap_) & GENMASK(5, 2)) >> 2) +#define DP_CAP_SIGNALLING_HBR3 1 +#define DP_CAP_SIGNALLING_UHBR10 2 +#define DP_CAP_SIGNALLING_UHBR20 3 #define DP_CAP_RECEPTACLE BIT(6) #define DP_CAP_USB BIT(7) #define DP_CAP_DFP_D_PIN_ASSIGN(_cap_) (((_cap_) & GENMASK(15, 8)) >> 8) @@ -78,6 +80,13 @@ enum { DP_CAP_UFP_D_PIN_ASSIGN(_cap_) : DP_CAP_DFP_D_PIN_ASSIGN(_cap_)) #define DP_CAP_PIN_ASSIGN_DFP_D(_cap_) ((_cap_ & DP_CAP_RECEPTACLE) ? \ DP_CAP_DFP_D_PIN_ASSIGN(_cap_) : DP_CAP_UFP_D_PIN_ASSIGN(_cap_)) +#define DP_CAP_UHBR_13_5_SUPPORT BIT(26) +#define DP_CAP_CABLE_TYPE(_cap_) (((_cap_) & GENMASK(29, 28)) >> 28) +#define DP_CAP_CABLE_TYPE_PASSIVE 0 +#define DP_CAP_CABLE_TYPE_RE_TIMER 1 +#define DP_CAP_CABLE_TYPE_RE_DRIVER 2 +#define DP_CAP_CABLE_TYPE_OPTICAL 3 +#define DP_CAP_DPAM_VERSION BIT(30) /* DisplayPort Status Update VDO bits */ #define DP_STATUS_CONNECTION(_status_) ((_status_) & 3) @@ -97,13 +106,24 @@ enum { #define DP_CONF_CURRENTLY(_conf_) ((_conf_) & 3) #define DP_CONF_UFP_U_AS_DFP_D BIT(0) #define DP_CONF_UFP_U_AS_UFP_D BIT(1) -#define DP_CONF_SIGNALING_DP BIT(2) -#define DP_CONF_SIGNALING_GEN_2 BIT(3) /* Reserved after v1.0b */ +#define DP_CONF_SIGNALLING_MASK GENMASK(5, 2) +#define DP_CONF_SIGNALLING_SHIFT 2 +#define DP_CONF_SIGNALLING_HBR3 1 +#define DP_CONF_SIGNALLING_UHBR10 2 +#define DP_CONF_SIGNALLING_UHBR20 3 #define DP_CONF_PIN_ASSIGNEMENT_SHIFT 8 #define DP_CONF_PIN_ASSIGNEMENT_MASK GENMASK(15, 8) /* Helper for setting/getting the pin assignment value to the configuration */ #define DP_CONF_SET_PIN_ASSIGN(_a_) ((_a_) << 8) #define DP_CONF_GET_PIN_ASSIGN(_conf_) (((_conf_) & GENMASK(15, 8)) >> 8) +#define DP_CONF_UHBR13_5_SUPPORT BIT(26) +#define DP_CONF_CABLE_TYPE_MASK GENMASK(29, 28) +#define DP_CONF_CABLE_TYPE_SHIFT 28 +#define DP_CONF_CABLE_TYPE_PASSIVE 0 +#define DP_CONF_CABLE_TYPE_RE_TIMER 1 +#define DP_CONF_CABLE_TYPE_RE_DRIVER 2 +#define DP_CONF_CABLE_TYPE_OPTICAL 3 +#define DP_CONF_DPAM_VERSION BIT(30) #endif /* __USB_TYPEC_DP_H */