From patchwork Tue Nov 20 09:48:44 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "AnilKumar, Chimata" X-Patchwork-Id: 1772391 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id 46AC2DF2AB for ; Tue, 20 Nov 2012 09:53:30 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TakTv-0004gK-6B; Tue, 20 Nov 2012 09:51:03 +0000 Received: from bear.ext.ti.com ([192.94.94.41]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TakSH-0003wa-D4 for linux-arm-kernel@lists.infradead.org; Tue, 20 Nov 2012 09:49:26 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id qAK9nHsX004017; Tue, 20 Nov 2012 03:49:17 -0600 Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id qAK9n8GE029316; Tue, 20 Nov 2012 15:19:16 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Tue, 20 Nov 2012 15:19:09 +0530 Received: from localhost.localdomain (dbdp20.itg.ti.com [172.24.170.38]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with ESMTP id qAK9n0cv017340; Tue, 20 Nov 2012 15:19:09 +0530 From: AnilKumar Ch To: , , Subject: [PATCH v3 2/5] mfd: tps65217: Set PMIC to shutdown on PWR_EN toggle Date: Tue, 20 Nov 2012 15:18:44 +0530 Message-ID: <1353404927-14412-3-git-send-email-anilkumar@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1353404927-14412-1-git-send-email-anilkumar@ti.com> References: <1353404927-14412-1-git-send-email-anilkumar@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20121120_044922_090098_1DEA85DA X-CRM114-Status: GOOD ( 14.96 ) X-Spam-Score: -7.6 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [192.94.94.41 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Colin Foe-Parker , rtc-linux@googlegroups.com, devicetree-discuss@lists.ozlabs.org, broonie@opensource.wolfsonmicro.com, rob.herring@calxeda.com, grant.likely@secretlab.ca, AnilKumar Ch , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Colin Foe-Parker Set tps65217 PMIC status to OFF if power enable toggle is supported. By setting this bit to 1 to enter PMIC to OFF state when PWR_EN pin is pulled low. Also adds a DT flag to specify that device pmic supports shutdown control or not. Signed-off-by: Colin Foe-Parker [anilkumar@ti.com: move the additions to tps65217 MFD driver] Signed-off-by: AnilKumar Ch --- .../devicetree/bindings/regulator/tps65217.txt | 4 ++++ drivers/mfd/tps65217.c | 12 ++++++++++++ 2 files changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/tps65217.txt b/Documentation/devicetree/bindings/regulator/tps65217.txt index d316fb8..4f05d20 100644 --- a/Documentation/devicetree/bindings/regulator/tps65217.txt +++ b/Documentation/devicetree/bindings/regulator/tps65217.txt @@ -11,6 +11,9 @@ Required properties: using the standard binding for regulators found at Documentation/devicetree/bindings/regulator/regulator.txt. +Optional properties: +- ti,pmic-shutdown-controller: Telling the PMIC to shutdown on PWR_EN toggle. + The valid names for regulators are: tps65217: dcdc1, dcdc2, dcdc3, ldo1, ldo2, ldo3 and ldo4 @@ -20,6 +23,7 @@ Example: tps: tps@24 { compatible = "ti,tps65217"; + ti,pmic-shutdown-controller; regulators { dcdc1_reg: dcdc1 { diff --git a/drivers/mfd/tps65217.c b/drivers/mfd/tps65217.c index 3fb32e6..c7f17d8 100644 --- a/drivers/mfd/tps65217.c +++ b/drivers/mfd/tps65217.c @@ -160,6 +160,7 @@ static int __devinit tps65217_probe(struct i2c_client *client, unsigned int version; unsigned int chip_id = ids->driver_data; const struct of_device_id *match; + bool status_off = false; int ret; if (client->dev.of_node) { @@ -170,6 +171,8 @@ static int __devinit tps65217_probe(struct i2c_client *client, return -EINVAL; } chip_id = (unsigned int)match->data; + status_off = of_property_read_bool(client->dev.of_node, + "ti,pmic-shutdown-controller"); } if (!chip_id) { @@ -207,6 +210,15 @@ static int __devinit tps65217_probe(struct i2c_client *client, return ret; } + /* Set the PMIC to shutdown on PWR_EN toggle */ + if (status_off) { + ret = tps65217_set_bits(tps, TPS65217_REG_STATUS, + TPS65217_STATUS_OFF, TPS65217_STATUS_OFF, + TPS65217_PROTECT_NONE); + if (ret) + dev_warn(tps->dev, "unable to set the status OFF\n"); + } + dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n", (version & TPS65217_CHIPID_CHIP_MASK) >> 4, version & TPS65217_CHIPID_REV_MASK);