From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753151AbdBAQzJ (ORCPT ); Wed, 1 Feb 2017 11:55:09 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:48224 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753137AbdBAQzH (ORCPT ); Wed, 1 Feb 2017 11:55:07 -0500 From: Christopher Bostic To: robh+dt@kernel.org, mark.rutland@arm.com, linux@armlinux.org.uk, gregkh@linuxfoundation.org, mturquette@baylibre.com, geert+renesas@glider.be, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, joel@jms.id.au, linux-kernel@vger.kernel.org, andrew@aj.id.au, alistair@popple.id.au, benh@kernel.crashing.org Cc: Jeremy Kerr , Chris Bostic Subject: [PATCH v3 04/18] drivers/fsi: Add fsi master definition Date: Wed, 1 Feb 2017 10:53:44 -0600 X-Mailer: git-send-email 2.10.1 (Apple Git-78) In-Reply-To: <20170201165358.45415-1-cbostic@linux.vnet.ibm.com> References: <20170201165358.45415-1-cbostic@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17020116-0056-0000-0000-000002A4554D X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006537; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000201; SDB=6.00815768; UDB=6.00398295; IPR=6.00593211; BA=6.00005108; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00014138; XFM=3.00000011; UTC=2017-02-01 16:54:55 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17020116-0057-0000-0000-000006D958FB Message-Id: <20170201165358.45415-5-cbostic@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-02-01_13:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000 definitions=main-1702010167 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jeremy Kerr Signed-off-by: Jeremy Kerr Signed-off-by: Chris Bostic --- drivers/fsi/fsi-core.c | 28 ++++++++++++++++++++++++++++ drivers/fsi/fsi-master.h | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+) create mode 100644 drivers/fsi/fsi-master.h diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 3d55bd5..c7469fe 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -16,6 +16,34 @@ #include #include #include +#include + +#include "fsi-master.h" + +static DEFINE_IDA(master_ida); + +/* FSI master support */ + +int fsi_master_register(struct fsi_master *master) +{ + if (!master || !master->dev) + return -EINVAL; + + master->idx = ida_simple_get(&master_ida, 0, 0, GFP_KERNEL); + get_device(master->dev); + return 0; +} +EXPORT_SYMBOL_GPL(fsi_master_register); + +void fsi_master_unregister(struct fsi_master *master) +{ + if (!master || !master->dev) + return; + + ida_simple_remove(&master_ida, master->idx); + put_device(master->dev); +} +EXPORT_SYMBOL_GPL(fsi_master_unregister); /* FSI core & Linux bus type definitions */ diff --git a/drivers/fsi/fsi-master.h b/drivers/fsi/fsi-master.h new file mode 100644 index 0000000..e75a810 --- /dev/null +++ b/drivers/fsi/fsi-master.h @@ -0,0 +1,37 @@ +/* + * FSI master definitions. These comprise the core <--> master interface, + * to allow the core to interact with the (hardware-specific) masters. + * + * Copyright (C) IBM Corporation 2016 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef DRIVERS_FSI_MASTER_H +#define DRIVERS_FSI_MASTER_H + +#include + +struct fsi_master { + struct device *dev; + int idx; + int n_links; + int (*read)(struct fsi_master *, int link, + uint8_t slave, uint32_t addr, + void *val, size_t size); + int (*write)(struct fsi_master *, int link, + uint8_t slave, uint32_t addr, + const void *val, size_t size); +}; + +extern int fsi_master_register(struct fsi_master *master); +extern void fsi_master_unregister(struct fsi_master *master); + +#endif /* DRIVERS_FSI_MASTER_H */ -- 1.8.2.2