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>
26 #ifdef CONFIG_PM_SLEEP
27 static int tmio_mmc_suspend(struct device
*dev
)
29 struct platform_device
*pdev
= to_platform_device(dev
);
30 const struct mfd_cell
*cell
= mfd_get_cell(pdev
);
33 ret
= pm_runtime_force_suspend(dev
);
35 /* Tell MFD core it can disable us now.*/
36 if (!ret
&& cell
->disable
)
42 static int tmio_mmc_resume(struct device
*dev
)
44 struct platform_device
*pdev
= to_platform_device(dev
);
45 const struct mfd_cell
*cell
= mfd_get_cell(pdev
);
48 /* Tell the MFD core we are ready to be enabled */
50 ret
= cell
->resume(pdev
);
53 ret
= pm_runtime_force_resume(dev
);
59 static int tmio_mmc_probe(struct platform_device
*pdev
)
61 const struct mfd_cell
*cell
= mfd_get_cell(pdev
);
62 struct tmio_mmc_data
*pdata
;
63 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 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
91 /* SD control register space size is 0x200, 0x400 for bus_shift=1 */
92 pdata
->bus_shift
= resource_size(res
) >> 10;
93 pdata
->flags
|= TMIO_MMC_HAVE_HIGH_REG
;
95 ret
= tmio_mmc_host_probe(&host
, pdev
, pdata
);
99 ret
= request_irq(irq
, tmio_mmc_irq
, IRQF_TRIGGER_FALLING
,
100 dev_name(&pdev
->dev
), host
);
104 pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host
->mmc
),
105 (unsigned long)host
->ctl
, irq
);
110 tmio_mmc_host_remove(host
);
118 static int tmio_mmc_remove(struct platform_device
*pdev
)
120 const struct mfd_cell
*cell
= mfd_get_cell(pdev
);
121 struct mmc_host
*mmc
= platform_get_drvdata(pdev
);
124 struct tmio_mmc_host
*host
= mmc_priv(mmc
);
125 free_irq(platform_get_irq(pdev
, 0), host
);
126 tmio_mmc_host_remove(host
);
134 /* ------------------- device registration ----------------------- */
136 static const struct dev_pm_ops tmio_mmc_dev_pm_ops
= {
137 SET_SYSTEM_SLEEP_PM_OPS(tmio_mmc_suspend
, tmio_mmc_resume
)
138 SET_RUNTIME_PM_OPS(tmio_mmc_host_runtime_suspend
,
139 tmio_mmc_host_runtime_resume
,
143 static struct platform_driver tmio_mmc_driver
= {
146 .owner
= THIS_MODULE
,
147 .pm
= &tmio_mmc_dev_pm_ops
,
149 .probe
= tmio_mmc_probe
,
150 .remove
= tmio_mmc_remove
,
153 module_platform_driver(tmio_mmc_driver
);
155 MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
156 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
157 MODULE_LICENSE("GPL v2");
158 MODULE_ALIAS("platform:tmio-mmc");