linux-kernel - [RFC PATCH 3/7] mmc: sdhci: Add callback to set bus mode

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Date:   Mon, 7 Aug 2017 21:31:38 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Tony Lindgren <tony@...mide.com>,
        Rob Herring <robh+dt@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>
CC:     <kishon@...com>, <nsekhar@...com>, <linux-omap@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH 3/7] mmc: sdhci: Add callback to set bus mode

Add callback to set bus mode in sdhci library so that the
controller driver can perform any bus mode specific configurations
in the callback function.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 drivers/mmc/host/sdhci.c | 3 +++
 drivers/mmc/host/sdhci.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index fff0baadbc3e..d5050ec42481 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1747,6 +1747,9 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	if (host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
 		sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
 
+	if (host->ops->set_bus_mode)
+		host->ops->set_bus_mode(host, ios->bus_mode);
+
 	mmiowb();
 }
 EXPORT_SYMBOL_GPL(sdhci_set_ios);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index d778034e324d..39c7a2723906 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -583,6 +583,7 @@ struct sdhci_ops {
 	void    (*adma_workaround)(struct sdhci_host *host, u32 intmask);
 	void    (*card_event)(struct sdhci_host *host);
 	void	(*voltage_switch)(struct sdhci_host *host);
+	void	(*set_bus_mode)(struct sdhci_host *host, unsigned int mode);
 };
 
 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
-- 
2.11.0