1/*
  2 * Synopsys DesignWare Multimedia Card Interface driver
  3 *
  4 * Copyright (C) 2009 NXP Semiconductors
  5 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
  6 *
  7 * This program is free software; you can redistribute it and/or modify
  8 * it under the terms of the GNU General Public License as published by
  9 * the Free Software Foundation; either version 2 of the License, or
 10 * (at your option) any later version.
 11 */
 12
 13#include <linux/interrupt.h>
 14#include <linux/module.h>
 15#include <linux/io.h>
 16#include <linux/irq.h>
 17#include <linux/platform_device.h>
 18#include <linux/slab.h>
 19#include <linux/mmc/host.h>
 20#include <linux/mmc/mmc.h>
 21#include <linux/mmc/dw_mmc.h>
 22#include "dw_mmc.h"
 23
 24static int dw_mci_pltfm_probe(struct platform_device *pdev)
 25{
 26	struct dw_mci *host;
 27	struct resource	*regs;
 28	int ret;
 29
 30	host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
 31	if (!host)
 32		return -ENOMEM;
 33
 34	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 35	if (!regs) {
 36		ret = -ENXIO;
 37		goto err_free;
 38	}
 39
 40	host->irq = platform_get_irq(pdev, 0);
 41	if (host->irq < 0) {
 42		ret = host->irq;
 43		goto err_free;
 44	}
 45
 46	host->dev = pdev->dev;
 47	host->irq_flags = 0;
 48	host->pdata = pdev->dev.platform_data;
 49	ret = -ENOMEM;
 50	host->regs = ioremap(regs->start, resource_size(regs));
 51	if (!host->regs)
 52		goto err_free;
 53	platform_set_drvdata(pdev, host);
 54	ret = dw_mci_probe(host);
 55	if (ret)
 56		goto err_out;
 57	return ret;
 58err_out:
 59	iounmap(host->regs);
 60err_free:
 61	kfree(host);
 62	return ret;
 63}
 64
 65static int __exit dw_mci_pltfm_remove(struct platform_device *pdev)
 66{
 67	struct dw_mci *host = platform_get_drvdata(pdev);
 68
 69	platform_set_drvdata(pdev, NULL);
 70	dw_mci_remove(host);
 71	iounmap(host->regs);
 72	kfree(host);
 73	return 0;
 74}
 75
 76#ifdef CONFIG_PM_SLEEP
 77/*
 78 * TODO: we should probably disable the clock to the card in the suspend path.
 79 */
 80static int dw_mci_pltfm_suspend(struct device *dev)
 81{
 82	int ret;
 83	struct dw_mci *host = dev_get_drvdata(dev);
 84
 85	ret = dw_mci_suspend(host);
 86	if (ret)
 87		return ret;
 88
 89	return 0;
 90}
 91
 92static int dw_mci_pltfm_resume(struct device *dev)
 93{
 94	int ret;
 95	struct dw_mci *host = dev_get_drvdata(dev);
 96
 97	ret = dw_mci_resume(host);
 98	if (ret)
 99		return ret;
100
101	return 0;
102}
103#else
104#define dw_mci_pltfm_suspend	NULL
105#define dw_mci_pltfm_resume	NULL
106#endif /* CONFIG_PM_SLEEP */
107
108static SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
109
110static struct platform_driver dw_mci_pltfm_driver = {
111	.remove		= __exit_p(dw_mci_pltfm_remove),
112	.driver		= {
113		.name		= "dw_mmc",
114		.pm		= &dw_mci_pltfm_pmops,
115	},
116};
117
118static int __init dw_mci_init(void)
119{
120	return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe);
121}
122
123static void __exit dw_mci_exit(void)
124{
125	platform_driver_unregister(&dw_mci_pltfm_driver);
126}
127
128module_init(dw_mci_init);
129module_exit(dw_mci_exit);
130
131MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
132MODULE_AUTHOR("NXP Semiconductor VietNam");
133MODULE_AUTHOR("Imagination Technologies Ltd");
134MODULE_LICENSE("GPL v2");