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Violators will be prosecuted; Tue, 6 Jun 2017 17:09:11 -0400 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v56L9BW945219896; Tue, 6 Jun 2017 21:09:11 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1253D124047; Tue, 6 Jun 2017 17:06:44 -0400 (EDT) Received: from christophersmbp.austin.ibm.com (unknown [9.41.175.240]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP id 0714312403D; Tue, 6 Jun 2017 17:06:42 -0400 (EDT) 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 Subject: [PATCH v8 03/24] drivers/fsi: Add empty master scan Date: Tue, 6 Jun 2017 16:08:38 -0500 X-Mailer: git-send-email 2.10.1 (Apple Git-78) In-Reply-To: <20170606210859.80431-1-cbostic@linux.vnet.ibm.com> References: <20170606210859.80431-1-cbostic@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17060621-2213-0000-0000-000001D34769 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007185; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000212; SDB=6.00871106; UDB=6.00433228; IPR=6.00651098; BA=6.00005403; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015723; XFM=3.00000015; UTC=2017-06-06 21:09:14 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17060621-2214-0000-0000-00005667BE9F Message-Id: <20170606210859.80431-4-cbostic@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-06-06_14:, , 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=8.0.1-1703280000 definitions=main-1706060367 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170606_140937_865139_FE13A1A4 X-CRM114-Status: GOOD ( 12.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chris Bostic , andrew@aj.id.au, alistair@popple.id.au, linux-kernel@vger.kernel.org, Jeremy Kerr , benh@kernel.crashing.org, joel@jms.id.au MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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);