Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754494AbZGJMiA (ORCPT ); Fri, 10 Jul 2009 08:38:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752732AbZGJMhX (ORCPT ); Fri, 10 Jul 2009 08:37:23 -0400 Received: from smtp.nokia.com ([192.100.105.134]:19358 "EHLO mgw-mx09.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753498AbZGJMg7 (ORCPT ); Fri, 10 Jul 2009 08:36:59 -0400 From: Adrian Hunter To: Pierre Ossman Cc: Jarkko Lavinen , Denis Karpov , Adrian Hunter , linux-omap Mailing List , lkml Date: Fri, 10 Jul 2009 15:40:27 +0300 Message-Id: <20090710124027.1262.91547.sendpatchset@ahunter-tower> In-Reply-To: <20090710124004.1262.10422.sendpatchset@ahunter-tower> References: <20090710124004.1262.10422.sendpatchset@ahunter-tower> Subject: [PATCH 3/32] mmc: add MMC_CAP_NONREMOVABLE host capability X-OriginalArrivalTime: 10 Jul 2009 12:36:50.0441 (UTC) FILETIME=[18DF2790:01CA015B] X-Nokia-AV: Clean Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4699 Lines: 189 >From 52fa498f893db9a7dc203cee36ad8889241ab0b0 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 11 May 2009 10:03:41 +0300 Subject: [PATCH] mmc: add MMC_CAP_NONREMOVABLE host capability eMMC's are not removable, so unsafe resume is OK always. To permit this a new host capability MMC_CAP_NONREMOVABLE has been added and suspend / resume updated accordingly. Signed-off-by: Adrian Hunter --- drivers/mmc/core/mmc.c | 41 ++++++++++++++++++++++++++++++++++------- drivers/mmc/core/sd.c | 41 ++++++++++++++++++++++++++++++++++------- include/linux/mmc/host.h | 1 + 3 files changed, 69 insertions(+), 14 deletions(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 06084db..3e35075 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -507,8 +507,6 @@ static void mmc_detect(struct mmc_host *host) } } -#ifdef CONFIG_MMC_UNSAFE_RESUME - /* * Suspend callback from host. */ @@ -551,20 +549,49 @@ static void mmc_resume(struct mmc_host *host) } -#else +#ifdef CONFIG_MMC_UNSAFE_RESUME -#define mmc_suspend NULL -#define mmc_resume NULL +static const struct mmc_bus_ops mmc_ops = { + .remove = mmc_remove, + .detect = mmc_detect, + .suspend = mmc_suspend, + .resume = mmc_resume, +}; -#endif +static void mmc_attach_bus_ops(struct mmc_host *host) +{ + mmc_attach_bus(host, &mmc_ops); +} + +#else static const struct mmc_bus_ops mmc_ops = { .remove = mmc_remove, .detect = mmc_detect, + .suspend = NULL, + .resume = NULL, +}; + +static const struct mmc_bus_ops mmc_ops_unsafe = { + .remove = mmc_remove, + .detect = mmc_detect, .suspend = mmc_suspend, .resume = mmc_resume, }; +static void mmc_attach_bus_ops(struct mmc_host *host) +{ + const struct mmc_bus_ops *bus_ops; + + if (host->caps & MMC_CAP_NONREMOVABLE) + bus_ops = &mmc_ops_unsafe; + else + bus_ops = &mmc_ops; + mmc_attach_bus(host, bus_ops); +} + +#endif + /* * Starting point for MMC card init. */ @@ -575,7 +602,7 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr) BUG_ON(!host); WARN_ON(!host->claimed); - mmc_attach_bus(host, &mmc_ops); + mmc_attach_bus_ops(host); /* * We need to get OCR a different way for SPI. diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index cd81c39..80cccd2 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -561,8 +561,6 @@ static void mmc_sd_detect(struct mmc_host *host) } } -#ifdef CONFIG_MMC_UNSAFE_RESUME - /* * Suspend callback from host. */ @@ -605,20 +603,49 @@ static void mmc_sd_resume(struct mmc_host *host) } -#else +#ifdef CONFIG_MMC_UNSAFE_RESUME -#define mmc_sd_suspend NULL -#define mmc_sd_resume NULL +static const struct mmc_bus_ops mmc_sd_ops = { + .remove = mmc_sd_remove, + .detect = mmc_sd_detect, + .suspend = mmc_sd_suspend, + .resume = mmc_sd_resume, +}; -#endif +static void mmc_sd_attach_bus_ops(struct mmc_host *host) +{ + mmc_attach_bus(host, &mmc_sd_ops); +} + +#else static const struct mmc_bus_ops mmc_sd_ops = { .remove = mmc_sd_remove, .detect = mmc_sd_detect, + .suspend = NULL, + .resume = NULL, +}; + +static const struct mmc_bus_ops mmc_sd_ops_unsafe = { + .remove = mmc_sd_remove, + .detect = mmc_sd_detect, .suspend = mmc_sd_suspend, .resume = mmc_sd_resume, }; +static void mmc_sd_attach_bus_ops(struct mmc_host *host) +{ + const struct mmc_bus_ops *bus_ops; + + if (host->caps & MMC_CAP_NONREMOVABLE) + bus_ops = &mmc_sd_ops_unsafe; + else + bus_ops = &mmc_sd_ops; + mmc_attach_bus(host, bus_ops); +} + +#endif + /* * Starting point for SD card init. */ @@ -629,7 +656,7 @@ int mmc_attach_sd(struct mmc_host *host, u32 ocr) BUG_ON(!host); WARN_ON(!host->claimed); - mmc_attach_bus(host, &mmc_sd_ops); + mmc_sd_attach_bus_ops(host); /* * We need to get OCR a different way for SPI. diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 9cc5be9..6847fce 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -148,6 +148,7 @@ struct mmc_host { #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */ #define MMC_CAP_DISABLE (1 << 7) /* Can the host be disabled */ +#define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */ /* host specific block data */ unsigned int max_seg_size; /* see blk_queue_max_segment_size */ -- 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/