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);
32 ret = tmio_mmc_host_suspend(&dev->dev);
34 /* Tell MFD core it can disable us now.*/
35 if (!ret && cell->disable)
41 static int tmio_mmc_resume(struct platform_device *dev)
43 const struct mfd_cell *cell = mfd_get_cell(dev);
46 /* Tell the MFD core we are ready to be enabled */
48 ret = cell->resume(dev);
51 ret = tmio_mmc_host_resume(&dev->dev);
56 #define tmio_mmc_suspend NULL
57 #define tmio_mmc_resume NULL
60 static int tmio_mmc_probe(struct platform_device *pdev)
62 const struct mfd_cell *cell = mfd_get_cell(pdev);
63 struct tmio_mmc_data *pdata;
64 struct tmio_mmc_host *host;
65 int ret = -EINVAL, irq;
67 if (pdev->num_resources != 2)
70 pdata = pdev->dev.platform_data;
71 if (!pdata || !pdata->hclk)
74 irq = platform_get_irq(pdev, 0);
80 /* Tell the MFD core we are ready to be enabled */
82 ret = cell->enable(pdev);
87 ret = tmio_mmc_host_probe(&host, pdev, pdata);
91 ret = request_irq(irq, tmio_mmc_irq, IRQF_TRIGGER_FALLING,
92 dev_name(&pdev->dev), host);
96 pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
97 (unsigned long)host->ctl, irq);
102 tmio_mmc_host_remove(host);
110 static int tmio_mmc_remove(struct platform_device *pdev)
112 const struct mfd_cell *cell = mfd_get_cell(pdev);
113 struct mmc_host *mmc = platform_get_drvdata(pdev);
116 struct tmio_mmc_host *host = mmc_priv(mmc);
117 free_irq(platform_get_irq(pdev, 0), host);
118 tmio_mmc_host_remove(host);
126 /* ------------------- device registration ----------------------- */
128 static struct platform_driver tmio_mmc_driver = {
131 .owner = THIS_MODULE,
133 .probe = tmio_mmc_probe,
134 .remove = tmio_mmc_remove,
135 .suspend = tmio_mmc_suspend,
136 .resume = tmio_mmc_resume,
139 module_platform_driver(tmio_mmc_driver);
141 MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
142 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
143 MODULE_LICENSE("GPL v2");
144 MODULE_ALIAS("platform:tmio-mmc");