AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

sdhci-pltfm: implement platform data passing

Browse Source 
This includes platform ops, quirks and (de)initialization callbacks.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Richard Röjfors <richard.rojfors@pelagicore.com>
Cc: David Vrabel <david.vrabel@csr.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Ben Dooks <ben@simtec.co.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anton Vorontsov 2010-05-26 14:41:55 -07:00 committed by Linus Torvalds
parent f27f47ef5b
commit a7626b7a5d
2 changed files with 55 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/mmc/host/sdhci-pltfm.c
View File

@ -29,6 +29,7 @@
#include <linux/mmc/host.h>
#include <linux/io.h>
#include <linux/sdhci-pltfm.h>
#include "sdhci.h"
@ -49,12 +50,11 @@ static struct sdhci_ops sdhci_pltfm_ops = {
static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
{
struct sdhci_pltfm_data *pdata = pdev->dev.platform_data;
struct sdhci_host *host;
struct resource *iomem;
int ret;
BUG_ON(pdev == NULL);
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iomem) {
ret = -ENOMEM;
@ -76,7 +76,12 @@ static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
}
host->hw_name = "platform";
host->ops = &sdhci_pltfm_ops;
if (pdata && pdata->ops)
host->ops = pdata->ops;
else
host->ops = &sdhci_pltfm_ops;
if (pdata)
host->quirks = pdata->quirks;
host->irq = platform_get_irq(pdev, 0);
if (!request_mem_region(iomem->start, resource_size(iomem),
@ -93,6 +98,12 @@ static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
goto err_remap;
}
if (pdata && pdata->init) {
ret = pdata->init(host);
if (ret)
goto err_plat_init;
}
ret = sdhci_add_host(host);
if (ret)
goto err_add_host;
@ -102,6 +113,9 @@ static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
return 0;
err_add_host:
if (pdata && pdata->exit)
pdata->exit(host);
err_plat_init:
iounmap(host->ioaddr);
err_remap:
release_mem_region(iomem->start, resource_size(iomem));
@ -114,6 +128,7 @@ static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
static int __devexit sdhci_pltfm_remove(struct platform_device *pdev)
{
struct sdhci_pltfm_data *pdata = pdev->dev.platform_data;
struct sdhci_host *host = platform_get_drvdata(pdev);
struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
int dead;
@ -125,6 +140,8 @@ static int __devexit sdhci_pltfm_remove(struct platform_device *pdev)
dead = 1;
sdhci_remove_host(host, dead);
if (pdata && pdata->exit)
pdata->exit(host);
iounmap(host->ioaddr);
release_mem_region(iomem->start, resource_size(iomem));
sdhci_free_host(host);
@ -165,4 +182,3 @@ MODULE_DESCRIPTION("Secure Digital Host Controller Interface platform driver");
MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:sdhci");

35
include/linux/sdhci-pltfm.h Normal file
View File

@ -0,0 +1,35 @@
/*
* Platform data declarations for the sdhci-pltfm driver.
*
* Copyright (c) 2010 MontaVista Software, LLC.
*
* Author: Anton Vorontsov <avorontsov@ru.mvista.com>
*
* 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 _SDHCI_PLTFM_H
#define _SDHCI_PLTFM_H
struct sdhci_ops;
struct sdhci_host;
/**
* struct sdhci_pltfm_data - SDHCI platform-specific information & hooks
* @ops: optional pointer to the platform-provided SDHCI ops
* @quirks: optional SDHCI quirks
* @init: optional hook that is called during device probe, before the
* driver tries to access any SDHCI registers
* @exit: optional hook that is called during device removal
*/
struct sdhci_pltfm_data {
struct sdhci_ops *ops;
unsigned int quirks;
int (*init)(struct sdhci_host *host);
void (*exit)(struct sdhci_host *host);
};
#endif /* _SDHCI_PLTFM_H */