linux/drivers/mmc/host/sdhci-dove.c
Shawn Guo f0de836923 mmc: sdhci: change sdhci-pltfm into a module
There are a couple of problems left from the sdhci pltfm and OF
consolidation changes.

* When building more than one sdhci-pltfm based drivers in the same
  image, linker will give multiple definition error on the sdhci-pltfm
  helper functions.  For example right now, building sdhci-of-esdhc
  and sdhci-of-hlwd together is a valid combination from Kconfig view.

* With the current build method, there is error with building the
  drivers as module, but module installation fails with modprobe.

The patch fixes above problems by changing sdhci-pltfm into a module.
To avoid EXPORT_SYMBOL on so many big endian IO accessors, it moves
these accessors into sdhci-pltfm.h as the 'static inline' functions.
As a result, sdhci.h needs to be included in sdhci-pltfm.h, and in
turn can be removed from individual drivers which already include
sdhci-pltfm.h.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20 17:20:49 -04:00

109 lines
2.7 KiB
C

/*
* 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-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,
};
static 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,
};
static int __devinit sdhci_dove_probe(struct platform_device *pdev)
{
return sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
}
static int __devexit sdhci_dove_remove(struct platform_device *pdev)
{
return sdhci_pltfm_unregister(pdev);
}
static struct platform_driver sdhci_dove_driver = {
.driver = {
.name = "sdhci-dove",
.owner = THIS_MODULE,
},
.probe = sdhci_dove_probe,
.remove = __devexit_p(sdhci_dove_remove),
#ifdef CONFIG_PM
.suspend = sdhci_pltfm_suspend,
.resume = sdhci_pltfm_resume,
#endif
};
static int __init sdhci_dove_init(void)
{
return platform_driver_register(&sdhci_dove_driver);
}
module_init(sdhci_dove_init);
static void __exit sdhci_dove_exit(void)
{
platform_driver_unregister(&sdhci_dove_driver);
}
module_exit(sdhci_dove_exit);
MODULE_DESCRIPTION("SDHCI driver for Dove");
MODULE_AUTHOR("Saeed Bishara <saeed@marvell.com>, "
"Mike Rapoport <mike@compulab.co.il>");
MODULE_LICENSE("GPL v2");