From a7626b7a5de37bbd506b23633be95428ee81c2e4 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Wed, 26 May 2010 14:41:55 -0700 Subject: [PATCH] sdhci-pltfm: implement platform data passing MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This includes platform ops, quirks and (de)initialization callbacks. Signed-off-by: Anton Vorontsov Cc: Richard Röjfors Cc: David Vrabel Cc: Pierre Ossman Cc: Ben Dooks Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/mmc/host/sdhci-pltfm.c | 24 +++++++++++++++++++---- include/linux/sdhci-pltfm.h | 35 ++++++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+), 4 deletions(-) create mode 100644 include/linux/sdhci-pltfm.h diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index 297f40ae6ad5..217b911a2635 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -29,6 +29,7 @@ #include #include +#include #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 @@ err: 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 "); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:sdhci"); - diff --git a/include/linux/sdhci-pltfm.h b/include/linux/sdhci-pltfm.h new file mode 100644 index 000000000000..0239bd70241e --- /dev/null +++ b/include/linux/sdhci-pltfm.h @@ -0,0 +1,35 @@ +/* + * Platform data declarations for the sdhci-pltfm driver. + * + * Copyright (c) 2010 MontaVista Software, LLC. + * + * Author: Anton Vorontsov + * + * 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 */ -- 2.30.2