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Commit 17403f23 authored by Thomas Abraham's avatar Thomas Abraham Committed by Chris Ball
Browse files

mmc: dw_mmc: prepare functions in dw_mmc-pltfm for reuse 



Platform implementations of dw-mshc controller may choose to extend the
features of the standard dw-mshc controller such as adding additional
clocking options or modifying the bus interface. Support for such
implementation specific extensions can be incorporated into dw_mmc-pltfm,
but including multiple such platform specific implementations would
convolute the existing dw_mmc-pltfm code.

Instead, it would be better to create implementation specific platform
drivers to support implementation specific features. Such platforms
drivers can reuse the existing infrastructure in dw_mmc-pltfm for
resource identification and controller registration and provide support
for implementation specific features. So, allow the infrastructure in
dw_mmc-pltfm to be reused by other implementation specific platform
drivers.

Signed-off-by: default avatarThomas Abraham <thomas.abraham@linaro.org>
Acked-by: default avatarWill Newton <will.newton@imgtec.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent c91eab4b

drivers/mmc/host/dw_mmc-pltfm.c

+10 −2
Original line number Diff line number Diff line
@@ -23,7 +23,7 @@ 


#include "dw_mmc.h"



static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev)

int dw_mci_pltfm_register(struct platform_device *pdev)

{

	struct dw_mci *host;

	struct resource	*regs;
@@ -52,6 +52,12 @@ static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev) 
	ret = dw_mci_probe(host);

	return ret;

}

EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);



static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev)

{

	return dw_mci_pltfm_register(pdev);

}



static int __devexit dw_mci_pltfm_remove(struct platform_device *pdev)

{
@@ -61,6 +67,7 @@ static int __devexit dw_mci_pltfm_remove(struct platform_device *pdev) 
	dw_mci_remove(host);

	return 0;

}

EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);



#ifdef CONFIG_PM_SLEEP

/*
@@ -94,7 +101,8 @@ static int dw_mci_pltfm_resume(struct device *dev) 
#define dw_mci_pltfm_resume	NULL

#endif /* CONFIG_PM_SLEEP */



static SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);

SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);

EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);



static const struct of_device_id dw_mci_pltfm_match[] = {

	{ .compatible = "snps,dw-mshc", },

drivers/mmc/host/dw_mmc-pltfm.h

0 → 100644
+19 −0
Original line number Diff line number Diff line 
/*

 * Synopsys DesignWare Multimedia Card Interface Platform driver

 *

 * Copyright (C) 2012, Samsung Electronics Co., Ltd.

 *

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

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */



#ifndef _DW_MMC_PLTFM_H_

#define _DW_MMC_PLTFM_H_



extern int dw_mci_pltfm_register(struct platform_device *pdev);

extern int __devexit dw_mci_pltfm_remove(struct platform_device *pdev);

extern const struct dev_pm_ops dw_mci_pltfm_pmops;



#endif /* _DW_MMC_PLTFM_H_ */