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
);
115 platform_set_drvdata(pdev
, NULL
);
118 struct tmio_mmc_host
*host
= mmc_priv(mmc
);
119 free_irq(platform_get_irq(pdev
, 0), host
);
120 tmio_mmc_host_remove(host
);
128 /* ------------------- device registration ----------------------- */
130 static struct platform_driver tmio_mmc_driver
= {
133 .owner
= THIS_MODULE
,
135 .probe
= tmio_mmc_probe
,
136 .remove
= tmio_mmc_remove
,
137 .suspend
= tmio_mmc_suspend
,
138 .resume
= tmio_mmc_resume
,
141 module_platform_driver(tmio_mmc_driver
);
143 MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
144 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
145 MODULE_LICENSE("GPL v2");
146 MODULE_ALIAS("platform:tmio-mmc");