From patchwork Thu Apr 24 10:17:00 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 4048161 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 83B269F3E2 for ; Thu, 24 Apr 2014 10:21:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BC69A2017D for ; Thu, 24 Apr 2014 10:21:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E9159200CF for ; Thu, 24 Apr 2014 10:21:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754250AbaDXKV2 (ORCPT ); Thu, 24 Apr 2014 06:21:28 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:60592 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755134AbaDXKS4 (ORCPT ); Thu, 24 Apr 2014 06:18:56 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id s3OAIbLT009907; Thu, 24 Apr 2014 05:18:37 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3OAIbo7019219; Thu, 24 Apr 2014 05:18:37 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.174.1; Thu, 24 Apr 2014 05:18:37 -0500 Received: from deskari.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3OAISlq009835; Thu, 24 Apr 2014 05:18:36 -0500 From: Tomi Valkeinen To: Archit Taneja , , , CC: Tomi Valkeinen Subject: [PATCH 04/23] OMAPDSS: DSI: set regulator voltage to 1.8V Date: Thu, 24 Apr 2014 13:17:00 +0300 Message-ID: <1398334639-14172-5-git-send-email-tomi.valkeinen@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1398334639-14172-1-git-send-email-tomi.valkeinen@ti.com> References: <1398334639-14172-1-git-send-email-tomi.valkeinen@ti.com> MIME-Version: 1.0 Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 Set the DSI vdd regulator voltage to the required 1.8V. This is required for the case when the regulator in the DT data defines a range of allowed voltages. In this case it's required to set the voltage, as otherwise enabling the voltage fails. Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/omap2/dss/dsi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/video/fbdev/omap2/dss/dsi.c b/drivers/video/fbdev/omap2/dss/dsi.c index 8be9b04d8849..57f120896b43 100644 --- a/drivers/video/fbdev/omap2/dss/dsi.c +++ b/drivers/video/fbdev/omap2/dss/dsi.c @@ -1161,6 +1161,7 @@ static int dsi_regulator_init(struct platform_device *dsidev) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct regulator *vdds_dsi; + int r; if (dsi->vdds_dsi_reg != NULL) return 0; @@ -1173,6 +1174,15 @@ static int dsi_regulator_init(struct platform_device *dsidev) return PTR_ERR(vdds_dsi); } + if (regulator_can_change_voltage(vdds_dsi)) { + r = regulator_set_voltage(vdds_dsi, 1800000, 1800000); + if (r) { + devm_regulator_put(vdds_dsi); + DSSERR("can't set the DSI regulator voltage\n"); + return r; + } + } + dsi->vdds_dsi_reg = vdds_dsi; return 0;