From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1162200AbbKFTxj (ORCPT ); Fri, 6 Nov 2015 14:53:39 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:48050 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966366AbbKFTmH (ORCPT ); Fri, 6 Nov 2015 14:42:07 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Soeren Grunewald Subject: [PATCH 3.14 35/37] serial: 8250_pci: Add support for 16 port Exar boards Date: Fri, 6 Nov 2015 11:24:50 -0800 Message-Id: <20151106192413.036873566@linuxfoundation.org> X-Mailer: git-send-email 2.6.2 In-Reply-To: <20151106192410.681850286@linuxfoundation.org> References: <20151106192410.681850286@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Soeren Grunewald commit 96a5d18bc1338786fecac73599f1681f59a59a8e upstream. The Exar XR17V358 chip usually provides only 8 ports. But two chips can be combined to act as a single 16 port chip. Therefor one chip is configured as master the second as slave by connecting the mode pin to VCC (master) or GND (slave). Then the master chip is reporting a different device-id depending on whether a slave is detected or not. The UARTs 8-15 are addressed from 0x2000-0x3fff. So the offset of 0x400 from UART to UART can be used to address all 16 ports as before. See: https://www.exar.com/common/content/document.ashx?id=1587 page 11 Signed-off-by: Soeren Grunewald Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_pci.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1772,6 +1772,8 @@ pci_wch_ch353_setup(struct serial_privat #define PCI_DEVICE_ID_SUNIX_1999 0x1999 +#define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358 + /* Unknown vendors/cards - this should not be in linux/pci_ids.h */ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584 #define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588 @@ -2266,6 +2268,13 @@ static struct pci_serial_quirk pci_seria .subdevice = PCI_ANY_ID, .setup = pci_xr17v35x_setup, }, + { + .vendor = PCI_VENDOR_ID_EXAR, + .device = PCI_DEVICE_ID_EXAR_XR17V8358, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_xr17v35x_setup, + }, /* * Xircom cards */ @@ -2706,6 +2715,7 @@ enum pci_board_num_t { pbn_exar_XR17V352, pbn_exar_XR17V354, pbn_exar_XR17V358, + pbn_exar_XR17V8358, pbn_exar_ibm_saturn, pbn_pasemi_1682M, pbn_ni8430_2, @@ -3375,6 +3385,14 @@ static struct pciserial_board pci_boards .reg_shift = 0, .first_offset = 0, }, + [pbn_exar_XR17V8358] = { + .flags = FL_BASE0, + .num_ports = 16, + .base_baud = 7812500, + .uart_offset = 0x400, + .reg_shift = 0, + .first_offset = 0, + }, [pbn_exar_ibm_saturn] = { .flags = FL_BASE0, .num_ports = 1, @@ -4731,7 +4749,7 @@ static struct pci_device_id serial_pci_t 0, 0, pbn_exar_XR17C158 }, /* - * Exar Corp. XR17V35[248] Dual/Quad/Octal PCIe UARTs + * Exar Corp. XR17V[48]35[248] Dual/Quad/Octal/Hexa PCIe UARTs */ { PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17V352, PCI_ANY_ID, PCI_ANY_ID, @@ -4745,7 +4763,10 @@ static struct pci_device_id serial_pci_t PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_exar_XR17V358 }, - + { PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17V8358, + PCI_ANY_ID, PCI_ANY_ID, + 0, + 0, pbn_exar_XR17V8358 }, /* * Topic TP560 Data/Fax/Voice 56k modem (reported by Evan Clarke) */