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Commit 20758b66 authored by Adrian Hunter's avatar Adrian Hunter Committed by Chris Ball
Browse files

mmc: sdhci: add eMMC hardware reset support 



Add an SDHCI operation for hardware reset and connect it to the
host controller operation.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent b2499518

drivers/mmc/host/sdhci.c

+9 −0
Original line number Original line Diff line number Diff line
@@ -1471,6 +1471,14 @@ static int sdhci_get_ro(struct mmc_host *mmc) 
	return 0;

	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)

static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)

{

{

	struct sdhci_host *host;

	struct sdhci_host *host;
@@ -1805,6 +1813,7 @@ static const struct mmc_host_ops sdhci_ops = { 
	.request	= sdhci_request,

	.request	= sdhci_request,

	.set_ios	= sdhci_set_ios,

	.set_ios	= sdhci_set_ios,

	.get_ro		= sdhci_get_ro,

	.get_ro		= sdhci_get_ro,

	.hw_reset	= sdhci_hw_reset,

	.enable_sdio_irq = sdhci_enable_sdio_irq,

	.enable_sdio_irq = sdhci_enable_sdio_irq,

	.start_signal_voltage_switch	= sdhci_start_signal_voltage_switch,

	.start_signal_voltage_switch	= sdhci_start_signal_voltage_switch,

	.execute_tuning			= sdhci_execute_tuning,

	.execute_tuning			= sdhci_execute_tuning,

drivers/mmc/host/sdhci.h

+1 −1
Original line number Original line Diff line number Diff line
@@ -273,7 +273,7 @@ struct sdhci_ops { 
	void	(*platform_reset_enter)(struct sdhci_host *host, u8 mask);

	void	(*platform_reset_enter)(struct sdhci_host *host, u8 mask);

	void	(*platform_reset_exit)(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);

	int	(*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);



	void	(*hw_reset)(struct sdhci_host *host);

};

};





#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS

#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS