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Commit 985b1aa0 authored by Mike Rapoport's avatar Mike Rapoport Committed by Chris Ball
Browse files

mmc: Add support for the Marvell Dove SDHCI controller 



Implement an sdhci-pltfm driver for the controller found in the
Marvell Dove SoC.

Signed-off-by: default avatarMike Rapoport <mike@compulab.co.il>
CC: Saeed Bishara <saeed@marvell.com>
Acked-by: default avatarWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 0c21e3aa

drivers/mmc/host/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -140,6 +140,17 @@ config MMC_SDHCI_ESDHC_IMX 


	  If unsure, say N.



config MMC_SDHCI_DOVE

	bool "SDHCI support on Marvell's Dove SoC"

	depends on ARCH_DOVE

	depends on MMC_SDHCI_PLTFM

	select MMC_SDHCI_IO_ACCESSORS

	help

	  This selects the Secure Digital Host Controller Interface in

	  Marvell's Dove SoC.



	  If unsure, say N.



config MMC_SDHCI_S3C

	tristate "SDHCI support on Samsung S3C SoC"

	depends on MMC_SDHCI && PLAT_SAMSUNG

drivers/mmc/host/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-platform.o 
sdhci-platform-y				:= sdhci-pltfm.o

sdhci-platform-$(CONFIG_MMC_SDHCI_CNS3XXX)	+= sdhci-cns3xxx.o

sdhci-platform-$(CONFIG_MMC_SDHCI_ESDHC_IMX)	+= sdhci-esdhc-imx.o

sdhci-platform-$(CONFIG_MMC_SDHCI_DOVE)		+= sdhci-dove.o



obj-$(CONFIG_MMC_SDHCI_OF)	+= sdhci-of.o

sdhci-of-y				:= sdhci-of-core.o

drivers/mmc/host/sdhci-dove.c

0 → 100644
+70 −0
Original line number Diff line number Diff line 
/*

 * sdhci-dove.c Support for SDHCI on Marvell's Dove SoC

 *

 * Author: Saeed Bishara <saeed@marvell.com>

 *	   Mike Rapoport <mike@compulab.co.il>

 * Based on sdhci-cns3xxx.c

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */



#include <linux/io.h>

#include <linux/mmc/host.h>



#include "sdhci.h"

#include "sdhci-pltfm.h"



static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)

{

	u16 ret;



	switch (reg) {

	case SDHCI_HOST_VERSION:

	case SDHCI_SLOT_INT_STATUS:

		/* those registers don't exist */

		return 0;

	default:

		ret = readw(host->ioaddr + reg);

	}

	return ret;

}



static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)

{

	u32 ret;



	switch (reg) {

	case SDHCI_CAPABILITIES:

		ret = readl(host->ioaddr + reg);

		/* Mask the support for 3.0V */

		ret &= ~SDHCI_CAN_VDD_300;

		break;

	default:

		ret = readl(host->ioaddr + reg);

	}

	return ret;

}



static struct sdhci_ops sdhci_dove_ops = {

	.read_w	= sdhci_dove_readw,

	.read_l	= sdhci_dove_readl,

};



struct sdhci_pltfm_data sdhci_dove_pdata = {

	.ops	= &sdhci_dove_ops,

	.quirks	= SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |

		  SDHCI_QUIRK_NO_BUSY_IRQ |

		  SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |

		  SDHCI_QUIRK_FORCE_DMA,

};

drivers/mmc/host/sdhci-pltfm.c

+3 −0
Original line number Diff line number Diff line
@@ -169,6 +169,9 @@ static const struct platform_device_id sdhci_pltfm_ids[] = { 
#endif

#ifdef CONFIG_MMC_SDHCI_ESDHC_IMX

	{ "sdhci-esdhc-imx", (kernel_ulong_t)&sdhci_esdhc_imx_pdata },

#endif

#ifdef CONFIG_MMC_SDHCI_DOVE

	{ "sdhci-dove", (kernel_ulong_t)&sdhci_dove_pdata },

#endif

	{ },

};

drivers/mmc/host/sdhci-pltfm.h

+1 −0
Original line number Diff line number Diff line
@@ -22,5 +22,6 @@ struct sdhci_pltfm_host { 


extern struct sdhci_pltfm_data sdhci_cns3xxx_pdata;

extern struct sdhci_pltfm_data sdhci_esdhc_imx_pdata;

extern struct sdhci_pltfm_data sdhci_dove_pdata;



#endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */