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[45.20.192.79]) by smtp.gmail.com with ESMTPSA id p7sm29848874paa.3.2016.10.14.15.14.57 (version=TLS1 cipher=AES128-SHA bits=128/128); Fri, 14 Oct 2016 15:14:58 -0700 (PDT) From: christopher.lee.bostic@gmail.com To: openbmc@lists.ozlabs.org Subject: [PATCH linux v4 08/20] fsi: Add empty master scan Date: Fri, 14 Oct 2016 17:14:30 -0500 Message-Id: <1476483282-85971-9-git-send-email-christopher.lee.bostic@gmail.com> X-Mailer: git-send-email 2.7.4 (Apple Git-66) In-Reply-To: <1476483282-85971-1-git-send-email-christopher.lee.bostic@gmail.com> References: <1476483282-85971-1-git-send-email-christopher.lee.bostic@gmail.com> X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: xxpetri@de.ibm.com, zahrens@us.ibm.com MIME-Version: 1.0 Errors-To: openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "openbmc" 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 --- drivers/fsi/fsi-core.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 7df4291..9744a55 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -21,6 +21,8 @@ #include "fsi-master.h" +#define FSI_N_SLAVES 4 + static atomic_t master_idx = ATOMIC_INIT(-1); struct fsi_slave { @@ -32,12 +34,34 @@ 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 slave_id) +{ + /* todo: initialise slave device, perform engine scan */ + + return -ENODEV; +} + /* FSI master support */ +static int fsi_master_scan(struct fsi_master *master) +{ + int link, slave_id; + + for (link = 0; link < master->n_links; link++) + for (slave_id = 0; slave_id < FSI_N_SLAVES; slave_id++) + fsi_slave_init(master, link, slave_id); + + return 0; + +} + int fsi_master_register(struct fsi_master *master) { master->idx = atomic_inc_return(&master_idx); get_device(master->dev); + fsi_master_scan(master); return 0; } EXPORT_SYMBOL_GPL(fsi_master_register);