[linux.git] / drivers / mmc / host / dw_mmc-pci.c

/*
 * Synopsys DesignWare Multimedia Card PCI Interface driver
 *
 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
 *
 * 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.
 */

#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/dw_mmc.h>
#include "dw_mmc.h"

#define PCI_BAR_NO 2
#define COMPLETE_BAR 0
#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
/* Defining the Capabilities */
#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
				MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
				MMC_CAP_SDIO_IRQ)

static struct dw_mci_board pci_board_data = {
	.num_slots			= 1,
	.caps				= DW_MCI_CAPABILITIES,
	.bus_hz				= 33 * 1000 * 1000,
	.detect_delay_ms		= 200,
	.fifo_depth			= 32,
};

static int __devinit dw_mci_pci_probe(struct pci_dev *pdev,
				  const struct pci_device_id *entries)
{
	struct dw_mci *host;
	int ret;

	ret = pci_enable_device(pdev);
	if (ret)
		return ret;
	if (pci_request_regions(pdev, "dw_mmc_pci")) {
		ret = -ENODEV;
		goto err_disable_dev;
	}

	host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
	if (!host) {
		ret = -ENOMEM;
		goto err_release;
	}

	host->irq = pdev->irq;
	host->irq_flags = IRQF_SHARED;
	host->dev = &pdev->dev;
	host->pdata = &pci_board_data;

	host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR);
	if (!host->regs) {
		ret = -EIO;
		goto err_unmap;
	}

	pci_set_drvdata(pdev, host);
	ret = dw_mci_probe(host);
	if (ret)
		goto err_probe_failed;
	return ret;

err_probe_failed:
	pci_iounmap(pdev, host->regs);
err_unmap:
	kfree(host);
err_release:
	pci_release_regions(pdev);
err_disable_dev:
	pci_disable_device(pdev);
	return ret;
}

static void __devexit dw_mci_pci_remove(struct pci_dev *pdev)
{
	struct dw_mci *host = pci_get_drvdata(pdev);

	dw_mci_remove(host);
	pci_set_drvdata(pdev, NULL);
	pci_release_regions(pdev);
	pci_iounmap(pdev, host->regs);
	kfree(host);
	pci_disable_device(pdev);
}

#ifdef CONFIG_PM_SLEEP
static int dw_mci_pci_suspend(struct device *dev)
{
	int ret;
	struct pci_dev *pdev = to_pci_dev(dev);
	struct dw_mci *host = pci_get_drvdata(pdev);

	ret = dw_mci_suspend(host);
	return ret;
}

static int dw_mci_pci_resume(struct device *dev)
{
	int ret;
	struct pci_dev *pdev = to_pci_dev(dev);
	struct dw_mci *host = pci_get_drvdata(pdev);

	ret = dw_mci_resume(host);
	return ret;
}
#else
#define dw_mci_pci_suspend	NULL
#define dw_mci_pci_resume	NULL
#endif /* CONFIG_PM_SLEEP */

static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);

static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
	{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
	{}
};
MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);

static struct pci_driver dw_mci_pci_driver = {
	.name		= "dw_mmc_pci",
	.id_table	= dw_mci_pci_id,
	.probe		= dw_mci_pci_probe,
	.remove		= dw_mci_pci_remove,
	.driver		=	{
		.pm =   &dw_mci_pci_pmops
	},
};

module_pci_driver(dw_mci_pci_driver);

MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
MODULE_AUTHOR("Shashidhar Hiremath <[email protected]>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
62ca8034 SH	1	/*
	2	* Synopsys DesignWare Multimedia Card PCI Interface driver
	3	*
	4	* Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*/
	11
	12	#include <linux/interrupt.h>
	13	#include <linux/module.h>
	14	#include <linux/io.h>
	15	#include <linux/irq.h>
	16	#include <linux/pci.h>
	17	#include <linux/slab.h>
	18	#include <linux/mmc/host.h>
	19	#include <linux/mmc/mmc.h>
	20	#include <linux/mmc/dw_mmc.h>
	21	#include "dw_mmc.h"
	22
	23	#define PCI_BAR_NO 2
	24	#define COMPLETE_BAR 0
	25	#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
	26	#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
	27	/* Defining the Capabilities */
	28	#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA \| MMC_CAP_MMC_HIGHSPEED \|\
	29	MMC_CAP_SD_HIGHSPEED \| MMC_CAP_8_BIT_DATA \|\
	30	MMC_CAP_SDIO_IRQ)
	31
	32	static struct dw_mci_board pci_board_data = {
	33	.num_slots = 1,
	34	.caps = DW_MCI_CAPABILITIES,
	35	.bus_hz = 33 * 1000 * 1000,
	36	.detect_delay_ms = 200,
	37	.fifo_depth = 32,
	38	};
	39
	40	static int __devinit dw_mci_pci_probe(struct pci_dev *pdev,
	41	const struct pci_device_id *entries)
	42	{
	43	struct dw_mci *host;
	44	int ret;
	45
	46	ret = pci_enable_device(pdev);
	47	if (ret)
	48	return ret;
	49	if (pci_request_regions(pdev, "dw_mmc_pci")) {
	50	ret = -ENODEV;
	51	goto err_disable_dev;
	52	}
	53
	54	host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
	55	if (!host) {
	56	ret = -ENOMEM;
	57	goto err_release;
	58	}
	59
	60	host->irq = pdev->irq;
	61	host->irq_flags = IRQF_SHARED;
4a90920c	62	host->dev = &pdev->dev;
62ca8034 SH	63	host->pdata = &pci_board_data;
	64
	65	host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR);
	66	if (!host->regs) {
	67	ret = -EIO;
	68	goto err_unmap;
	69	}
	70
	71	pci_set_drvdata(pdev, host);
	72	ret = dw_mci_probe(host);
	73	if (ret)
	74	goto err_probe_failed;
	75	return ret;
	76
	77	err_probe_failed:
	78	pci_iounmap(pdev, host->regs);
	79	err_unmap:
	80	kfree(host);
	81	err_release:
	82	pci_release_regions(pdev);
	83	err_disable_dev:
	84	pci_disable_device(pdev);
	85	return ret;
	86	}
	87
	88	static void __devexit dw_mci_pci_remove(struct pci_dev *pdev)
	89	{
	90	struct dw_mci *host = pci_get_drvdata(pdev);
	91
	92	dw_mci_remove(host);
	93	pci_set_drvdata(pdev, NULL);
	94	pci_release_regions(pdev);
	95	pci_iounmap(pdev, host->regs);
	96	kfree(host);
	97	pci_disable_device(pdev);
	98	}
	99
	100	#ifdef CONFIG_PM_SLEEP
	101	static int dw_mci_pci_suspend(struct device *dev)
	102	{
	103	int ret;
	104	struct pci_dev *pdev = to_pci_dev(dev);
	105	struct dw_mci *host = pci_get_drvdata(pdev);
	106
	107	ret = dw_mci_suspend(host);
	108	return ret;
	109	}
	110
	111	static int dw_mci_pci_resume(struct device *dev)
	112	{
	113	int ret;
	114	struct pci_dev *pdev = to_pci_dev(dev);
	115	struct dw_mci *host = pci_get_drvdata(pdev);
	116
	117	ret = dw_mci_resume(host);
	118	return ret;
	119	}
	120	#else
	121	#define dw_mci_pci_suspend NULL
	122	#define dw_mci_pci_resume NULL
	123	#endif /* CONFIG_PM_SLEEP */
	124
	125	static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
	126
127	static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
128	{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
129	{}
130	};
131	MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
132
133	static struct pci_driver dw_mci_pci_driver = {
134	.name = "dw_mmc_pci",
135	.id_table = dw_mci_pci_id,
136	.probe = dw_mci_pci_probe,
137	.remove = dw_mci_pci_remove,
138	.driver = {
139	.pm = &dw_mci_pci_pmops
140	},
141	};
142
350e3e00	143	module_pci_driver(dw_mci_pci_driver);
62ca8034 SH	144
	145	MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
	146	MODULE_AUTHOR("Shashidhar Hiremath <[email protected]>");
	147	MODULE_LICENSE("GPL v2");