From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932689AbdC2RvH (ORCPT ); Wed, 29 Mar 2017 13:51:07 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:40773 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932275AbdC2Rn5 (ORCPT ); Wed, 29 Mar 2017 13:43:57 -0400 From: Christopher Bostic To: robh+dt@kernel.org, mark.rutland@arm.com, linux@armlinux.org.uk, rostedt@goodmis.org, mingo@redhat.com, gregkh@linuxfoundation.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Jeremy Kerr , joel@jms.id.au, linux-kernel@vger.kernel.org, andrew@aj.id.au, alistair@popple.id.au, benh@kernel.crashing.org, Chris Bostic Subject: [PATCH v4 03/23] drivers/fsi: Add empty master scan Date: Wed, 29 Mar 2017 12:43:20 -0500 X-Mailer: git-send-email 2.10.1 (Apple Git-78) In-Reply-To: <20170329174340.89109-1-cbostic@linux.vnet.ibm.com> References: <20170329174340.89109-1-cbostic@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17032917-0020-0000-0000-00000BA9A362 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006872; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000206; SDB=6.00840412; UDB=6.00413637; IPR=6.00618406; BA=6.00005248; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00014855; XFM=3.00000013; UTC=2017-03-29 17:43:52 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17032917-0021-0000-0000-00005B3FBD0A Message-Id: <20170329174340.89109-4-cbostic@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-03-29_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=8.0.1-1702020001 definitions=main-1703290150 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jeremy Kerr When a new fsi master is added, we will need to scan its links, and slaves attached to those links. This change introduces a little shell to iterate the links, which we will populate with the actual slave scan in a later change. Signed-off-by: Jeremy Kerr Signed-off-by: Chris Bostic Signed-off-by: Joel Stanley --- drivers/fsi/fsi-core.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 2f19509..e90d45d 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -32,7 +32,25 @@ struct fsi_slave { #define to_fsi_slave(d) container_of(d, struct fsi_slave, dev) +/* FSI slave support */ +static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id) +{ + /* todo: initialise slave device, perform engine scan */ + + return -ENODEV; +} + /* FSI master support */ +static int fsi_master_scan(struct fsi_master *master) +{ + int link; + + for (link = 0; link < master->n_links; link++) + fsi_slave_init(master, link, 0); + + return 0; +} + int fsi_master_register(struct fsi_master *master) { int rc; @@ -44,10 +62,13 @@ int fsi_master_register(struct fsi_master *master) dev_set_name(&master->dev, "fsi%d", master->idx); rc = device_register(&master->dev); - if (rc) + if (rc) { ida_simple_remove(&master_ida, master->idx); + return rc; + } - return rc; + fsi_master_scan(master); + return 0; } EXPORT_SYMBOL_GPL(fsi_master_register); -- 1.8.2.2