Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753263AbZG1Kkh (ORCPT ); Tue, 28 Jul 2009 06:40:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753255AbZG1Kkf (ORCPT ); Tue, 28 Jul 2009 06:40:35 -0400 Received: from smtp.nokia.com ([192.100.105.134]:16578 "EHLO mgw-mx09.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753253AbZG1Kkc (ORCPT ); Tue, 28 Jul 2009 06:40:32 -0400 From: Adrian Hunter To: Andrew Morton Cc: Jarkko Lavinen , Adrian Hunter , linux-omap Mailing List , Pierre Ossman , Denis Karpov , Matt Fleming , lkml Date: Tue, 28 Jul 2009 13:40:55 +0300 Message-Id: <20090728104055.2371.8723.sendpatchset@ahunter-laptop> In-Reply-To: <20090728103834.2371.65809.sendpatchset@ahunter-laptop> References: <20090728103834.2371.65809.sendpatchset@ahunter-laptop> Subject: [PATCH V2 19/32] ARM: OMAP: mmc-twl4030: add regulator sleep / wake function X-OriginalArrivalTime: 28 Jul 2009 10:40:23.0703 (UTC) FILETIME=[CFE30A70:01CA0F6F] X-Nokia-AV: Clean Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3866 Lines: 117 >From b5f863cd167b6e3a1fb06be4e51513964fa83cb4 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 8 Jul 2009 13:20:30 +0300 Subject: [PATCH] ARM: OMAP: mmc-twl4030: add regulator sleep / wake function Add the ability for the driver to put the card power regulators to sleep and wake them up again. Signed-off-by: Adrian Hunter --- arch/arm/mach-omap2/mmc-twl4030.c | 57 +++++++++++++++++++++++++++++++++ arch/arm/plat-omap/include/mach/mmc.h | 2 + 2 files changed, 59 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c index 3678f0e..f95c702 100644 --- a/arch/arm/mach-omap2/mmc-twl4030.c +++ b/arch/arm/mach-omap2/mmc-twl4030.c @@ -334,6 +334,61 @@ static int twl_mmc23_set_power(struct device *dev, int slot, int power_on, int v return ret; } +static int twl_mmc1_set_sleep(struct device *dev, int slot, int sleep, int vdd, + int cardsleep) +{ + struct twl_mmc_controller *c = &hsmmc[0]; + int mode = sleep ? REGULATOR_MODE_STANDBY : REGULATOR_MODE_NORMAL; + + return regulator_set_mode(c->vcc, mode); +} + +static int twl_mmc23_set_sleep(struct device *dev, int slot, int sleep, int vdd, + int cardsleep) +{ + struct twl_mmc_controller *c = NULL; + struct omap_mmc_platform_data *mmc = dev->platform_data; + int i, err, mode; + + for (i = 1; i < ARRAY_SIZE(hsmmc); i++) { + if (mmc == hsmmc[i].mmc) { + c = &hsmmc[i]; + break; + } + } + + if (c == NULL) + return -ENODEV; + + /* + * If we don't see a Vcc regulator, assume it's a fixed + * voltage always-on regulator. + */ + if (!c->vcc) + return 0; + + mode = sleep ? REGULATOR_MODE_STANDBY : REGULATOR_MODE_NORMAL; + + if (!c->vcc_aux) + return regulator_set_mode(c->vcc, mode); + + if (cardsleep) { + /* VCC can be turned off if card is asleep */ + struct regulator *vcc_aux = c->vcc_aux; + + c->vcc_aux = NULL; + if (sleep) + err = twl_mmc23_set_power(dev, slot, 0, 0); + else + err = twl_mmc23_set_power(dev, slot, 1, vdd); + c->vcc_aux = vcc_aux; + } else + err = regulator_set_mode(c->vcc, mode); + if (err) + return err; + return regulator_set_mode(c->vcc_aux, mode); +} + static struct omap_mmc_platform_data *hsmmc_data[OMAP34XX_NR_MMC] __initdata; void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers) @@ -427,6 +482,7 @@ void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers) case 1: /* on-chip level shifting via PBIAS0/PBIAS1 */ mmc->slots[0].set_power = twl_mmc1_set_power; + mmc->slots[0].set_sleep = twl_mmc1_set_sleep; break; case 2: if (c->ext_clock) @@ -437,6 +493,7 @@ void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers) case 3: /* off-chip level shifting, or none */ mmc->slots[0].set_power = twl_mmc23_set_power; + mmc->slots[0].set_sleep = twl_mmc23_set_sleep; break; default: pr_err("MMC%d configuration not supported!\n", c->mmc); diff --git a/arch/arm/plat-omap/include/mach/mmc.h b/arch/arm/plat-omap/include/mach/mmc.h index 82f1e29..9390297 100644 --- a/arch/arm/plat-omap/include/mach/mmc.h +++ b/arch/arm/plat-omap/include/mach/mmc.h @@ -95,6 +95,8 @@ struct omap_mmc_platform_data { int (* set_bus_mode)(struct device *dev, int slot, int bus_mode); int (* set_power)(struct device *dev, int slot, int power_on, int vdd); int (* get_ro)(struct device *dev, int slot); + int (*set_sleep)(struct device *dev, int slot, int sleep, + int vdd, int cardsleep); /* return MMC cover switch state, can be NULL if not supported. * -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/