From: Anton Vorontsov <avorontsov@xxxxxxxxxxxxx>
This includes platform ops, quirks and (de)initialization callbacks.
Signed-off-by: Anton Vorontsov <avorontsov@xxxxxxxxxxxxx>
Cc: Richard Röjfors <richard.rojfors@xxxxxxxxxxxxxx>
Cc: David Vrabel <david.vrabel@xxxxxxx>
Cc: Pierre Ossman <pierre@xxxxxxxxx>
Cc: Ben Dooks <ben@xxxxxxxxxxxx>
Cc: <linux-mmc@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-pltfm.c | 24 +++++++++++++++++----
include/linux/sdhci-pltfm.h | 35 +++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+), 4 deletions(-)
diff -puN drivers/mmc/host/sdhci-pltfm.c~sdhci-pltfm-implement-platform-data-passing drivers/mmc/host/sdhci-pltfm.c
--- a/drivers/mmc/host/sdhci-pltfm.c~sdhci-pltfm-implement-platform-data-passing
+++ a/drivers/mmc/host/sdhci-pltfm.c
@@ -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(s
}
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(s
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(s
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(
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
MODULE_AUTHOR("Mocean Laboratories <info@xxxxxxxxxxxxxxx>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:sdhci");
-
diff -puN /dev/null include/linux/sdhci-pltfm.h
--- /dev/null
+++ a/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 <avorontsov@xxxxxxxxxxxxx>
+ *
+ * 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 */
_
--
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