From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adrian Hunter Subject: [PATCH 10/12] mmc: sdhci: Add a callback to select drive strength Date: Thu, 5 Feb 2015 15:13:47 +0200 Message-ID: <1423142029-22521-11-git-send-email-adrian.hunter@intel.com> References: <1423142029-22521-1-git-send-email-adrian.hunter@intel.com> Return-path: Received: from mga09.intel.com ([134.134.136.24]:58677 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757391AbbBENSF (ORCPT ); Thu, 5 Feb 2015 08:18:05 -0500 In-Reply-To: <1423142029-22521-1-git-send-email-adrian.hunter@intel.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Ulf Hansson , Chris Ball Cc: linux-mmc , Philip Rakity , Adrian Hunter Add a callbak to let host drivers select drive strength. Signed-off-by: Adrian Hunter --- drivers/mmc/host/sdhci.c | 13 +++++++++++++ drivers/mmc/host/sdhci.h | 4 ++++ 2 files changed, 17 insertions(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 8848e06..fe1b00d 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2054,6 +2054,18 @@ out_unlock: return err; } +static int sdhci_select_drive_strength(struct mmc_card *card, + unsigned int max_dtr, int host_drv, + int card_drv, int *drv_type) +{ + struct sdhci_host *host = mmc_priv(card->host); + + if (!host->ops->select_drive_strength) + return 0; + + return host->ops->select_drive_strength(host, card, max_dtr, host_drv, + card_drv, drv_type); +} static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) { @@ -2198,6 +2210,7 @@ static const struct mmc_host_ops sdhci_ops = { .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, .prepare_hs400_tuning = sdhci_prepare_hs400_tuning, .execute_tuning = sdhci_execute_tuning, + .select_drive_strength = sdhci_select_drive_strength, .card_event = sdhci_card_event, .card_busy = sdhci_card_busy, }; diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0315e18..57e7bad 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -340,6 +340,10 @@ struct sdhci_ops { void (*platform_init)(struct sdhci_host *host); void (*card_event)(struct sdhci_host *host); void (*voltage_switch)(struct sdhci_host *host); + int (*select_drive_strength)(struct sdhci_host *host, + struct mmc_card *card, + unsigned int max_dtr, int host_drv, + int card_drv, int *drv_type); }; #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS -- 1.9.1