From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932572AbaAaNfR (ORCPT ); Fri, 31 Jan 2014 08:35:17 -0500 Received: from smtp4.epfl.ch ([128.178.224.219]:59058 "EHLO smtp4.epfl.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932409AbaAaNfA (ORCPT ); Fri, 31 Jan 2014 08:35:00 -0500 From: Florian Vaussard To: Wolfgang Grandegger , Marc Kleine-Budde Cc: Andreas Larsson , linux-can@vger.kernel.org, netdev@vger.kernel.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, florian.vaussard@epfl.ch Subject: [PATCH v3 5/5] can: sja1000: of: add reg-io-width property for 8, 16 and 32-bit register access Date: Fri, 31 Jan 2014 14:34:37 +0100 Message-Id: <1391175277-19833-6-git-send-email-florian.vaussard@epfl.ch> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1391175277-19833-1-git-send-email-florian.vaussard@epfl.ch> References: <1391175277-19833-1-git-send-email-florian.vaussard@epfl.ch> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the 'reg-io-width' property for 8, 16 and 32-bit access, like what is currently done with IORESOURCE_MEM_{8,16,32}BIT for non-OF boot. Signed-off-by: Florian Vaussard --- drivers/net/can/sja1000/sja1000_platform.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/sja1000/sja1000_platform.c b/drivers/net/can/sja1000/sja1000_platform.c index 50dece8..25122bf 100644 --- a/drivers/net/can/sja1000/sja1000_platform.c +++ b/drivers/net/can/sja1000/sja1000_platform.c @@ -102,8 +102,20 @@ static void sp_populate_of(struct sja1000_priv *priv, struct device_node *of) int err; u32 prop; - priv->read_reg = sp_read_reg8; - priv->write_reg = sp_write_reg8; + err = of_property_read_u32(of, "reg-io-width", &prop); + if (err) + prop = 1; + + if (prop == 4) { + priv->read_reg = sp_read_reg32; + priv->write_reg = sp_write_reg32; + } else if (prop == 2) { + priv->read_reg = sp_read_reg16; + priv->write_reg = sp_write_reg16; + } else { + priv->read_reg = sp_read_reg8; + priv->write_reg = sp_write_reg8; + } err = of_property_read_u32(of, "nxp,external-clock-frequency", &prop); if (!err) -- 1.8.1.2