2 * linux/drivers/mmc/host/tmio_mmc.c
4 * Copyright (C) 2007 Ian Molton
5 * Copyright (C) 2004 Ian Molton
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * Driver for the MMC / SD / SDIO cell found in:
13 * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
16 #include <linux/device.h>
17 #include <linux/mfd/core.h>
18 #include <linux/mfd/tmio.h>
19 #include <linux/mmc/host.h>
20 #include <linux/module.h>
21 #include <linux/pagemap.h>
22 #include <linux/scatterlist.h>
27 static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state)
29 const struct mfd_cell *cell = mfd_get_cell(dev);
30 struct mmc_host *mmc = platform_get_drvdata(dev);
33 ret = tmio_mmc_host_suspend(&dev->dev);
35 /* Tell MFD core it can disable us now.*/
36 if (!ret && cell->disable)
42 static int tmio_mmc_resume(struct platform_device *dev)
44 const struct mfd_cell *cell = mfd_get_cell(dev);
45 struct mmc_host *mmc = platform_get_drvdata(dev);
48 /* Tell the MFD core we are ready to be enabled */
50 ret = cell->resume(dev);
53 ret = tmio_mmc_host_resume(&dev->dev);
58 #define tmio_mmc_suspend NULL
59 #define tmio_mmc_resume NULL
62 static int __devinit tmio_mmc_probe(struct platform_device *pdev)
64 const struct mfd_cell *cell = mfd_get_cell(pdev);
65 struct tmio_mmc_data *pdata;
66 struct tmio_mmc_host *host;
67 int ret = -EINVAL, irq;
69 if (pdev->num_resources != 2)
72 pdata = pdev->dev.platform_data;
73 if (!pdata || !pdata->hclk)
76 irq = platform_get_irq(pdev, 0);
82 /* Tell the MFD core we are ready to be enabled */
84 ret = cell->enable(pdev);
89 ret = tmio_mmc_host_probe(&host, pdev, pdata);
93 ret = request_irq(irq, tmio_mmc_irq, IRQF_DISABLED |
94 IRQF_TRIGGER_FALLING, dev_name(&pdev->dev), host);
98 pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
99 (unsigned long)host->ctl, irq);
104 tmio_mmc_host_remove(host);
112 static int __devexit tmio_mmc_remove(struct platform_device *pdev)
114 const struct mfd_cell *cell = mfd_get_cell(pdev);
115 struct mmc_host *mmc = platform_get_drvdata(pdev);
117 platform_set_drvdata(pdev, NULL);
120 struct tmio_mmc_host *host = mmc_priv(mmc);
121 free_irq(platform_get_irq(pdev, 0), host);
122 tmio_mmc_host_remove(host);
130 /* ------------------- device registration ----------------------- */
132 static struct platform_driver tmio_mmc_driver = {
135 .owner = THIS_MODULE,
137 .probe = tmio_mmc_probe,
138 .remove = __devexit_p(tmio_mmc_remove),
139 .suspend = tmio_mmc_suspend,
140 .resume = tmio_mmc_resume,
144 static int __init tmio_mmc_init(void)
146 return platform_driver_register(&tmio_mmc_driver);
149 static void __exit tmio_mmc_exit(void)
151 platform_driver_unregister(&tmio_mmc_driver);
154 module_init(tmio_mmc_init);
155 module_exit(tmio_mmc_exit);
157 MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
158 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
159 MODULE_LICENSE("GPL v2");
160 MODULE_ALIAS("platform:tmio-mmc");