From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934033Ab1JEET5 (ORCPT ); Wed, 5 Oct 2011 00:19:57 -0400 Received: from sm-d311v.smileserver.ne.jp ([203.211.202.206]:37460 "EHLO sm-d311v.smileserver.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753188Ab1JEETN (ORCPT ); Wed, 5 Oct 2011 00:19:13 -0400 From: Tomoya MORINAGA To: Jean Delvare , Ben Dooks , Wolfram Sang , Qi Wang , Linus Walleij , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Cc: yong.y.wang@intel.com, joel.clark@intel.com, kok.howg.ewe@intel.com, toshiharu-linux@dsn.lapis-semi.com, Tomoya MORINAGA Subject: [PATCH 6/7 v2] i2c-eg20t: Add initialize processing in case i2c-error occurs Date: Wed, 5 Oct 2011 13:17:43 +0900 Message-Id: <1317788264-13118-6-git-send-email-tomoya-linux@dsn.lapis-semi.com> X-Mailer: git-send-email 1.7.6.4 In-Reply-To: <1317788264-13118-1-git-send-email-tomoya-linux@dsn.lapis-semi.com> References: <1317788264-13118-1-git-send-email-tomoya-linux@dsn.lapis-semi.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In case disconnecting physical connection, need to initialize i2c device for retry access. This patch adds initialize process in case bus-idle fails and Lost arbitration. Signed-off-by: Tomoya MORINAGA --- drivers/i2c/busses/i2c-eg20t.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c index 66de0a9..cf64e21 100644 --- a/drivers/i2c/busses/i2c-eg20t.c +++ b/drivers/i2c/busses/i2c-eg20t.c @@ -286,6 +286,7 @@ static s32 pch_i2c_wait_for_bus_idle(struct i2c_algo_pch_data *adap, if (timeout == 0) { pch_err(adap, "%s: Timeout Error.return%d\n", __func__, -ETIME); + pch_i2c_init(adap); return -ETIME; } @@ -430,6 +431,7 @@ static s32 pch_i2c_writebytes(struct i2c_adapter *i2c_adap, pch_err(adap, "Lost Arbitration\n"); pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMAL_BIT); pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMIF_BIT); + pch_i2c_init(adap); return -EAGAIN; } else { /* wait-event timeout */ pch_i2c_stop(adap); @@ -546,6 +548,7 @@ static s32 pch_i2c_readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, pch_err(adap, "Lost Arbitration\n"); pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMAL_BIT); pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMIF_BIT); + pch_i2c_init(adap); return -EAGAIN; } else { /* wait-event timeout */ pch_i2c_stop(adap); -- 1.7.6.4