From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753284Ab1KCNlT (ORCPT ); Thu, 3 Nov 2011 09:41:19 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:51293 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752040Ab1KCNlR (ORCPT ); Thu, 3 Nov 2011 09:41:17 -0400 From: Mark Brown To: Samuel Ortiz Cc: linux-kernel@vger.kernel.org, patches@opensource.wolfsonmicro.com, Mark Brown Subject: [PATCH] mfd: Disable more pulls on WM8994 Date: Thu, 3 Nov 2011 13:41:14 +0000 Message-Id: <1320327674-23116-1-git-send-email-broonie@opensource.wolfsonmicro.com> X-Mailer: git-send-email 1.7.7.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Disable more pulls by default on WM8994 for a small current saving. Since some designs do leave SPKMODE floating provide platform data to allow that to be left enabled. Signed-off-by: Mark Brown --- drivers/mfd/wm8994-core.c | 11 ++++++++--- include/linux/mfd/wm8994/pdata.h | 6 ++++++ 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c index 772027d..fe7f071 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -337,6 +337,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) struct wm8994_pdata *pdata = wm8994->dev->platform_data; const char *devname; int ret, i; + int pulls = 0; dev_set_drvdata(wm8994->dev, wm8994); @@ -479,12 +480,16 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) } wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; + + if (pdata->spkmode_pu) + pulls |= WM8994_SPKMODE_PU; } - /* Disable LDO pulldowns while the device is active */ + /* Disable unneeded pulls */ wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, - WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, - 0); + WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | + WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, + pulls); /* In some system designs where the regulators are not in use, * we can achieve a small reduction in leakage currents by diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index ea32f30..54e2fef 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -174,6 +174,12 @@ struct wm8994_pdata { * consumption will rise. */ bool ldo_ena_always_driven; + + /* + * SPKMODE must be pulled internally by the device on this + * system. + */ + bool spkmode_pu; }; #endif -- 1.7.7.1