From patchwork Fri Jan 9 17:21:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 5602131 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9F75D9F443 for ; Fri, 9 Jan 2015 17:29:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CA24E20608 for ; Fri, 9 Jan 2015 17:29:22 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 06DFB205FA for ; Fri, 9 Jan 2015 17:29:22 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y9dJL-0003gD-A4; Fri, 09 Jan 2015 17:25:23 +0000 Received: from sauhun.de ([89.238.76.85] helo=pokefinder.org) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y9dGl-0000jh-4a for linux-arm-kernel@lists.infradead.org; Fri, 09 Jan 2015 17:22:49 +0000 Received: from p4fe257be.dip0.t-ipconnect.de ([79.226.87.190]:48234 helo=localhost) by pokefinder.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1Y9dGM-0000MJ-Gc; Fri, 09 Jan 2015 18:22:18 +0100 From: Wolfram Sang To: linux-i2c@vger.kernel.org Subject: [RFC 04/11] i2c: opal: make use of the new infrastructure for quirks Date: Fri, 9 Jan 2015 18:21:34 +0100 Message-Id: <1420824103-24169-5-git-send-email-wsa@the-dreams.de> X-Mailer: git-send-email 2.1.3 In-Reply-To: <1420824103-24169-1-git-send-email-wsa@the-dreams.de> References: <1420824103-24169-1-git-send-email-wsa@the-dreams.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150109_092243_809702_EF779416 X-CRM114-Status: GOOD ( 10.62 ) X-Spam-Score: -0.0 (/) Cc: linux-mips@linux-mips.org, Wolfram Sang , Benjamin Herrenschmidt , linux-kernel@vger.kernel.org, Ludovic Desroches , Yingjoe Chen , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-opal.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/i2c/busses/i2c-opal.c b/drivers/i2c/busses/i2c-opal.c index 16f90b1a7508..f463eae44bf2 100644 --- a/drivers/i2c/busses/i2c-opal.c +++ b/drivers/i2c/busses/i2c-opal.c @@ -104,17 +104,6 @@ static int i2c_opal_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, req.buffer_ra = cpu_to_be64(__pa(msgs[0].buf)); break; case 2: - /* For two messages, we basically support only simple - * smbus transactions of a write plus a read. We might - * want to allow also two writes but we'd have to bounce - * the data into a single buffer. - */ - if ((msgs[0].flags & I2C_M_RD) || !(msgs[1].flags & I2C_M_RD)) - return -EOPNOTSUPP; - if (msgs[0].len > 4) - return -EOPNOTSUPP; - if (msgs[0].addr != msgs[1].addr) - return -EOPNOTSUPP; req.type = OPAL_I2C_SM_READ; req.addr = cpu_to_be16(msgs[0].addr); req.subaddr_sz = msgs[0].len; @@ -210,6 +199,16 @@ static const struct i2c_algorithm i2c_opal_algo = { .functionality = i2c_opal_func, }; +/* For two messages, we basically support only simple + * smbus transactions of a write plus a read. We might + * want to allow also two writes but we'd have to bounce + * the data into a single buffer. + */ +static struct i2c_adapter_quirks i2c_opal_quirks = { + .flags = I2C_ADAPTER_QUIRK_COMB_WRITE_THEN_READ, + .max_comb_write_len = 4, +}; + static int i2c_opal_probe(struct platform_device *pdev) { struct i2c_adapter *adapter; @@ -232,6 +231,7 @@ static int i2c_opal_probe(struct platform_device *pdev) adapter->algo = &i2c_opal_algo; adapter->algo_data = (void *)(unsigned long)opal_id; + adapter->quirks = &i2c_opal_quirks; adapter->dev.parent = &pdev->dev; adapter->dev.of_node = of_node_get(pdev->dev.of_node); pname = of_get_property(pdev->dev.of_node, "ibm,port-name", NULL);