From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751927AbcFTRQf (ORCPT ); Mon, 20 Jun 2016 13:16:35 -0400 Received: from mail.savoirfairelinux.com ([208.88.110.44]:48686 "EHLO mail.savoirfairelinux.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753647AbcFTRPU (ORCPT ); Mon, 20 Jun 2016 13:15:20 -0400 From: Vivien Didelot To: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel@savoirfairelinux.com, "David S. Miller" , Andrew Lunn , Florian Fainelli , Ben Dooks , Sergei Shtylyov , Vivien Didelot Subject: [PATCH v5 net-next v5 10/14] net: dsa: mv88e6xxx: add SMI init helper Date: Mon, 20 Jun 2016 13:14:07 -0400 Message-Id: <20160620171411.13746-11-vivien.didelot@savoirfairelinux.com> X-Mailer: git-send-email 2.9.0 In-Reply-To: <20160620171411.13746-1-vivien.didelot@savoirfairelinux.com> References: <20160620171411.13746-1-vivien.didelot@savoirfairelinux.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add an helper function to isolate SMI specific assignments and checks. This function will later help choosing the different SMI accesses based of the compatible info. Since the chip structure is already allocated in the legacy probe, use the mv88e6xxx_reg_read access routine instead of __mv88e6xxx_reg_read. Signed-off-by: Vivien Didelot Reviewed-by: Andrew Lunn --- drivers/net/dsa/mv88e6xxx.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c index 113092a..4e24ac5 100644 --- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -3616,6 +3616,19 @@ static struct mv88e6xxx_priv_state *mv88e6xxx_alloc_chip(struct device *dev) return ps; } +static int mv88e6xxx_smi_init(struct mv88e6xxx_priv_state *ps, + struct mii_bus *bus, int sw_addr) +{ + /* ADDR[0] pin is unavailable externally and considered zero */ + if (sw_addr & 0x1) + return -EINVAL; + + ps->bus = bus; + ps->sw_addr = sw_addr; + + return 0; +} + static const char *mv88e6xxx_drv_probe(struct device *dsa_dev, struct device *host_dev, int sw_addr, void **priv) @@ -3635,7 +3648,11 @@ static const char *mv88e6xxx_drv_probe(struct device *dsa_dev, if (!ps) return NULL; - id = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID); + err = mv88e6xxx_smi_init(ps, bus, sw_addr); + if (err) + goto free; + + id = mv88e6xxx_reg_read(ps, REG_PORT(0), PORT_SWITCH_ID); if (id < 0) goto free; @@ -3648,8 +3665,6 @@ static const char *mv88e6xxx_drv_probe(struct device *dsa_dev, name = info->name; - ps->bus = bus; - ps->sw_addr = sw_addr; ps->info = info; err = mv88e6xxx_mdio_register(ps, NULL); @@ -3741,8 +3756,9 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev) if (!ps) return -ENOMEM; - ps->bus = mdiodev->bus; - ps->sw_addr = mdiodev->addr; + err = mv88e6xxx_smi_init(ps, mdiodev->bus, mdiodev->addr); + if (err) + return err; id = mv88e6xxx_reg_read(ps, REG_PORT(0), PORT_SWITCH_ID); if (id < 0) -- 2.9.0