From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adrian Hunter Subject: [PATCH 2/5] mmc: sdhci: add eMMC hardware reset support Date: Mon, 29 Aug 2011 16:42:12 +0300 Message-ID: <1314625335-11638-3-git-send-email-adrian.hunter@intel.com> References: <1314625335-11638-1-git-send-email-adrian.hunter@intel.com> Return-path: Received: from mga14.intel.com ([143.182.124.37]:63266 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751423Ab1H2Nm0 (ORCPT ); Mon, 29 Aug 2011 09:42:26 -0400 In-Reply-To: <1314625335-11638-1-git-send-email-adrian.hunter@intel.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Chris Ball Cc: linux-mmc , Adrian Hunter Add an SDHCI operation for hardware reset and connect it to the host controller operation. Signed-off-by: Adrian Hunter --- drivers/mmc/host/sdhci.c | 9 +++++++++ drivers/mmc/host/sdhci.h | 2 +- 2 files changed, 10 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 0e02cc1..d66a7a1 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1471,6 +1471,14 @@ static int sdhci_get_ro(struct mmc_host *mmc) return 0; } +static void sdhci_hw_reset(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + + if (host->ops && host->ops->hw_reset) + host->ops->hw_reset(host); +} + static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) { struct sdhci_host *host; @@ -1805,6 +1813,7 @@ static const struct mmc_host_ops sdhci_ops = { .request = sdhci_request, .set_ios = sdhci_set_ios, .get_ro = sdhci_get_ro, + .hw_reset = sdhci_hw_reset, .enable_sdio_irq = sdhci_enable_sdio_irq, .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, .execute_tuning = sdhci_execute_tuning, diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 745c42f..7bd919c 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -273,7 +273,7 @@ struct sdhci_ops { void (*platform_reset_enter)(struct sdhci_host *host, u8 mask); void (*platform_reset_exit)(struct sdhci_host *host, u8 mask); int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); - + void (*hw_reset)(struct sdhci_host *host); }; #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS -- 1.7.6