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Date: Fri, 19 Feb 2010 22:48:29 +0300
From: Anton Vorontsov <avorontsov@...mvista.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Richard Röjfors
<richard.rojfors.ext@...ean-labs.com>,
Pierre Ossman <pierre@...man.eu>, Ben Dooks <ben@...tec.co.uk>,
linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] sdhci-pltfm: Implement platform data passing
This includes platform ops, quirks and (de)initialization callbacks.
Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
---
drivers/mmc/host/sdhci-pltfm.c | 24 ++++++++++++++++++++----
drivers/mmc/host/sdhci-pltfm.h | 27 +++++++++++++++++++++++++++
2 files changed, 47 insertions(+), 4 deletions(-)
create mode 100644 drivers/mmc/host/sdhci-pltfm.h
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 297f40a..d0a52cb 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -31,6 +31,7 @@
#include <linux/io.h>
#include "sdhci.h"
+#include "sdhci-pltfm.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 <info@...ean-labs.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:sdhci");
-
diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h
new file mode 100644
index 0000000..0aaa334
--- /dev/null
+++ b/drivers/mmc/host/sdhci-pltfm.h
@@ -0,0 +1,27 @@
+/*
+ * Platform data declarations for the sdhci-pltfm driver.
+ *
+ * Copyright (c) 2010 MontaVista Software, LLC.
+ *
+ * Author: Anton Vorontsov <avorontsov@...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 {
+ struct sdhci_ops *ops;
+ unsigned int quirks;
+ int (*init)(struct sdhci_host *host);
+ void (*exit)(struct sdhci_host *host);
+};
+
+#endif /* _SDHCI_PLTFM_H */
--
1.7.0
--
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