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It consists of flags which may be bitwise-ored together: ============================= =============================================== PARPORT_MODE_PCSPP IBM PC registers are available, - i.e. functions that act on data, - control and status registers are - probably writing directly to the - hardware. + i.e. ``base`` (and ``base_hi`` if ECP) + in ``struct parport`` is valid. + Functions that act on data, control + and status registers are probably + writing directly to the hardware. PARPORT_MODE_TRISTATE The data drivers may be turned off. This allows the data lines to be used for reverse (peripheral to host) From patchwork Tue Mar 12 05:50:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Henrie X-Patchwork-Id: 780859 Received: from mail-pf1-f172.google.com (mail-pf1-f172.google.com [209.85.210.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45FDC111AC for ; Tue, 12 Mar 2024 05:56:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710222974; cv=none; b=j3r8OBnkH7/0J17O7OHpODdXGfl93vMR/LQG/AnnIaBlnG4qafbpFQpsAycIU696XT+5P3qt2wHsI2ApXFt44x7pCexWQKMcDKzSlX1O6daXHfFaUhO4FJW4h5q/NMKPNUc8GmHlEWFwaCujRwRTu1tiKetxdJsyhtqWha3kDCY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710222974; 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Mon, 11 Mar 2024 22:56:13 -0700 (PDT) From: Alex Henrie To: linux-parport@lists.infradead.org, linux-usb@vger.kernel.org, sudipm.mukherjee@gmail.com, johan@kernel.org, daniel@gimpelevich.san-francisco.ca.us, hkzlabnet@gmail.com, reboots@g-cipher.net, mike@trausch.us Cc: Alex Henrie Subject: [PATCH 3/7] usb: misc: uss720: don't advertise PARPORT_MODE_PCSPP Date: Mon, 11 Mar 2024 23:50:28 -0600 Message-ID: <20240312055350.205878-3-alexhenrie24@gmail.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240312055350.205878-1-alexhenrie24@gmail.com> References: <20240312055350.205878-1-alexhenrie24@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Signed-off-by: Alex Henrie --- drivers/usb/misc/uss720.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index b00d92db5dfd..fadceb7ab34d 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -719,7 +719,7 @@ static int uss720_probe(struct usb_interface *intf, priv->pp = pp; pp->private_data = priv; - pp->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_ECP | PARPORT_MODE_COMPAT; + pp->modes = PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_ECP | PARPORT_MODE_COMPAT; /* set the USS720 control register to manual mode, no ECP compression, enable all ints */ set_1284_register(pp, 7, 0x00, GFP_KERNEL); From patchwork Tue Mar 12 05:50:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Henrie X-Patchwork-Id: 780858 Received: from mail-pf1-f171.google.com (mail-pf1-f171.google.com [209.85.210.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 266F22DF84 for ; Tue, 12 Mar 2024 05:56:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; 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Mon, 11 Mar 2024 22:56:14 -0700 (PDT) Received: from petra.lan ([2607:fa18:9ffd::d95]) by smtp.gmail.com with ESMTPSA id k30-20020aa79d1e000000b006e65720e892sm5448898pfp.94.2024.03.11.22.56.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Mar 2024 22:56:14 -0700 (PDT) From: Alex Henrie To: linux-parport@lists.infradead.org, linux-usb@vger.kernel.org, sudipm.mukherjee@gmail.com, johan@kernel.org, daniel@gimpelevich.san-francisco.ca.us, hkzlabnet@gmail.com, reboots@g-cipher.net, mike@trausch.us Cc: Alex Henrie Subject: [PATCH 4/7] usb: misc: uss720: point pp->dev to usbdev->dev Date: Mon, 11 Mar 2024 23:50:29 -0600 Message-ID: <20240312055350.205878-4-alexhenrie24@gmail.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240312055350.205878-1-alexhenrie24@gmail.com> References: <20240312055350.205878-1-alexhenrie24@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This avoids a "fix this legacy no-device port driver" warning. Signed-off-by: Alex Henrie Acked-by: Sudip Mukherjee --- drivers/usb/misc/uss720.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index fadceb7ab34d..be7d3fa4c150 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -720,6 +720,7 @@ static int uss720_probe(struct usb_interface *intf, priv->pp = pp; pp->private_data = priv; pp->modes = PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_ECP | PARPORT_MODE_COMPAT; + pp->dev = &usbdev->dev; /* set the USS720 control register to manual mode, no ECP compression, enable all ints */ set_1284_register(pp, 7, 0x00, GFP_KERNEL); From patchwork Tue Mar 12 05:50:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Henrie X-Patchwork-Id: 779994 Received: from mail-ot1-f43.google.com (mail-ot1-f43.google.com [209.85.210.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A34603984D for ; 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Mon, 11 Mar 2024 22:56:15 -0700 (PDT) Received: from petra.lan ([2607:fa18:9ffd::d95]) by smtp.gmail.com with ESMTPSA id k30-20020aa79d1e000000b006e65720e892sm5448898pfp.94.2024.03.11.22.56.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Mar 2024 22:56:15 -0700 (PDT) From: Alex Henrie To: linux-parport@lists.infradead.org, linux-usb@vger.kernel.org, sudipm.mukherjee@gmail.com, johan@kernel.org, daniel@gimpelevich.san-francisco.ca.us, hkzlabnet@gmail.com, reboots@g-cipher.net, mike@trausch.us Cc: Alex Henrie Subject: [PATCH 5/7] usb: misc: uss720: document the names of the compatible devices Date: Mon, 11 Mar 2024 23:50:30 -0600 Message-ID: <20240312055350.205878-5-alexhenrie24@gmail.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240312055350.205878-1-alexhenrie24@gmail.com> References: <20240312055350.205878-1-alexhenrie24@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Information about 04b8:0002 and 05ab:0002 is from commit e3cb7bde9a6a ("USB: misc: uss720: more vendor/product ID's", 2018-03-20). The rest are from . Signed-off-by: Alex Henrie --- drivers/usb/misc/uss720.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index be7d3fa4c150..15cafc7dfd22 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -767,14 +767,14 @@ static void uss720_disconnect(struct usb_interface *intf) /* table of cables that work through this driver */ static const struct usb_device_id uss720_table[] = { - { USB_DEVICE(0x047e, 0x1001) }, - { USB_DEVICE(0x04b8, 0x0002) }, - { USB_DEVICE(0x04b8, 0x0003) }, + { USB_DEVICE(0x047e, 0x1001) }, /* Infowave 901-0030 */ + { USB_DEVICE(0x04b8, 0x0002) }, /* Epson CAEUL0002 ISD-103 */ + { USB_DEVICE(0x04b8, 0x0003) }, /* Epson ISD-101 */ { USB_DEVICE(0x050d, 0x0002) }, - { USB_DEVICE(0x050d, 0x1202) }, + { USB_DEVICE(0x050d, 0x1202) }, /* Belkin F5U120-PC */ { USB_DEVICE(0x0557, 0x2001) }, - { USB_DEVICE(0x05ab, 0x0002) }, - { USB_DEVICE(0x06c6, 0x0100) }, + { USB_DEVICE(0x05ab, 0x0002) }, /* Belkin F5U002 ISD-101 */ + { USB_DEVICE(0x06c6, 0x0100) }, /* Infowave ISD-103 */ { USB_DEVICE(0x0729, 0x1284) }, { USB_DEVICE(0x1293, 0x0002) }, { } /* Terminating entry */ From patchwork Tue Mar 12 05:50:31 2024 Content-Type: text/plain; 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AJvYcCXS8kD+3TSsxFK06yx35kAdPLzU8cEG5Ov8epGU4u6wtaNDNcI1tC5U1+tJm5GR8M7AgQvihciW5kkxtL+cezqJrgBuL+jYP9Ls X-Gm-Message-State: AOJu0Yx3GjavrwyQaEP4dgg+JHbUBfHZzwegaDlqaBURPu9D19H2i2Nb 5alvgEi95BNLM2TIRxzWOO5PCKxfUVLEMQcJnv5xX//7ChDFBHsT X-Google-Smtp-Source: AGHT+IFTNUeHdXYPj8pbD7YU1afPd4KdInabkTeJfTJBkzW6hlV74ZuuqnjWeSkhkwDRPzi4i8o2Vg== X-Received: by 2002:a05:6870:1685:b0:220:b839:4bb0 with SMTP id j5-20020a056870168500b00220b8394bb0mr9729874oae.19.1710222976671; Mon, 11 Mar 2024 22:56:16 -0700 (PDT) Received: from petra.lan ([2607:fa18:9ffd::d95]) by smtp.gmail.com with ESMTPSA id k30-20020aa79d1e000000b006e65720e892sm5448898pfp.94.2024.03.11.22.56.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Mar 2024 22:56:16 -0700 (PDT) From: Alex Henrie To: linux-parport@lists.infradead.org, linux-usb@vger.kernel.org, sudipm.mukherjee@gmail.com, johan@kernel.org, daniel@gimpelevich.san-francisco.ca.us, hkzlabnet@gmail.com, reboots@g-cipher.net, mike@trausch.us Cc: Alex Henrie Subject: [PATCH 6/7] usb: misc: uss720: add support for another variant of the Belkin F5U002 Date: Mon, 11 Mar 2024 23:50:31 -0600 Message-ID: <20240312055350.205878-6-alexhenrie24@gmail.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240312055350.205878-1-alexhenrie24@gmail.com> References: <20240312055350.205878-1-alexhenrie24@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This device is a gray USB parallel port adapter with "F5U002" imprinted on the plastic and a sticker that says both "F5U002" and "P80453-A". It's identified in lsusb as "05ab:1001 In-System Design BAYI Printer Class Support". It's subtly different from the other gray cable I have that has "F5U002 Rev 2" and "P80453-B" on its sticker and device ID 050d:0002. The uss720 driver appears to work flawlessly with this device, although the device evidently does not support ECP. Signed-off-by: Alex Henrie --- drivers/usb/misc/uss720.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index 15cafc7dfd22..5803919d7cc4 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -693,7 +693,7 @@ static int uss720_probe(struct usb_interface *intf, interface = intf->cur_altsetting; - if (interface->desc.bNumEndpoints < 3) { + if (interface->desc.bNumEndpoints < 2) { usb_put_dev(usbdev); return -ENODEV; } @@ -719,7 +719,9 @@ static int uss720_probe(struct usb_interface *intf, priv->pp = pp; pp->private_data = priv; - pp->modes = PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_ECP | PARPORT_MODE_COMPAT; + pp->modes = PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_COMPAT; + if (interface->desc.bNumEndpoints >= 3) + pp->modes |= PARPORT_MODE_ECP; pp->dev = &usbdev->dev; /* set the USS720 control register to manual mode, no ECP compression, enable all ints */ @@ -774,6 +776,7 @@ static const struct usb_device_id uss720_table[] = { { USB_DEVICE(0x050d, 0x1202) }, /* Belkin F5U120-PC */ { USB_DEVICE(0x0557, 0x2001) }, { USB_DEVICE(0x05ab, 0x0002) }, /* Belkin F5U002 ISD-101 */ + { USB_DEVICE(0x05ab, 0x1001) }, /* Belkin F5U002 P80453-A */ { USB_DEVICE(0x06c6, 0x0100) }, /* Infowave ISD-103 */ { USB_DEVICE(0x0729, 0x1284) }, { USB_DEVICE(0x1293, 0x0002) }, From patchwork Tue Mar 12 05:50:32 2024 Content-Type: text/plain; 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AJvYcCUdnre3JwH2nSteRkOKtnX4X0okGETDArWlhsnPqgLbn5FW6WPidpflXhE9ZKZoBsN2Kv/oG3BsBJvyPmUi/qQNU1pruDZ0VMQJ X-Gm-Message-State: AOJu0Yz21BkDkSXFPtDe+mbm3rqLnhq0es7YuIUrWA+1Op7O1xcMFQ6u RXp2ZQ/kyDseddg4d3NOJHr7HaoJ+c2sQQzdFb95Uv7C3SUJ7k2W X-Google-Smtp-Source: AGHT+IHkWbaDI2E6x3C5rP5FbpAv0qrTyRf4uYYyX7KjmKb//KoCNhTf41tTtcJ7kA81bVUndvFypQ== X-Received: by 2002:a62:5347:0:b0:6e6:8b59:1bad with SMTP id h68-20020a625347000000b006e68b591badmr5731778pfb.25.1710222977585; Mon, 11 Mar 2024 22:56:17 -0700 (PDT) Received: from petra.lan ([2607:fa18:9ffd::d95]) by smtp.gmail.com with ESMTPSA id k30-20020aa79d1e000000b006e65720e892sm5448898pfp.94.2024.03.11.22.56.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Mar 2024 22:56:17 -0700 (PDT) From: Alex Henrie To: linux-parport@lists.infradead.org, linux-usb@vger.kernel.org, sudipm.mukherjee@gmail.com, johan@kernel.org, daniel@gimpelevich.san-francisco.ca.us, hkzlabnet@gmail.com, reboots@g-cipher.net, mike@trausch.us Cc: Alex Henrie Subject: [PATCH 7/7] usb: misc: uss720: check for incompatible versions of the Belkin F5U002 Date: Mon, 11 Mar 2024 23:50:32 -0600 Message-ID: <20240312055350.205878-7-alexhenrie24@gmail.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240312055350.205878-1-alexhenrie24@gmail.com> References: <20240312055350.205878-1-alexhenrie24@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The incompatible device in my possession has a sticker that says "F5U002 Rev 2" and "P80453-B", and lsusb identifies it as "050d:0002 Belkin Components IEEE-1284 Controller". There is a bug report from 2007 from Michael Trausch who was seeing the exact same errors that I saw in 2024 trying to use this cable. Link: https://lore.kernel.org/all/46DE5830.9060401@trausch.us/ Signed-off-by: Alex Henrie --- drivers/usb/misc/uss720.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index 5803919d7cc4..0ad2bfc6af78 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -677,7 +677,7 @@ static int uss720_probe(struct usb_interface *intf, struct parport_uss720_private *priv; struct parport *pp; unsigned char reg; - int i; + int ret; dev_dbg(&intf->dev, "probe: vendor id 0x%x, device id 0x%x\n", le16_to_cpu(usbdev->descriptor.idVendor), @@ -688,8 +688,8 @@ static int uss720_probe(struct usb_interface *intf, usb_put_dev(usbdev); return -ENODEV; } - i = usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 2); - dev_dbg(&intf->dev, "set interface result %d\n", i); + ret = usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 2); + dev_dbg(&intf->dev, "set interface result %d\n", ret); interface = intf->cur_altsetting; @@ -728,12 +728,18 @@ static int uss720_probe(struct usb_interface *intf, set_1284_register(pp, 7, 0x00, GFP_KERNEL); set_1284_register(pp, 6, 0x30, GFP_KERNEL); /* PS/2 mode */ set_1284_register(pp, 2, 0x0c, GFP_KERNEL); - /* debugging */ - get_1284_register(pp, 0, ®, GFP_KERNEL); + + /* The Belkin F5U002 Rev 2 P80453-B USB parallel port adapter shares the + * device ID 050d:0002 with some other device that works with this + * driver, but it itself does not. Detect and handle the bad cable + * here. */ + ret = get_1284_register(pp, 0, ®, GFP_KERNEL); dev_dbg(&intf->dev, "reg: %7ph\n", priv->reg); + if (ret < 0) + return ret; - i = usb_find_last_int_in_endpoint(interface, &epd); - if (!i) { + ret = usb_find_last_int_in_endpoint(interface, &epd); + if (!ret) { dev_dbg(&intf->dev, "epaddr %d interval %d\n", epd->bEndpointAddress, epd->bInterval); }