Commit | Line | Data |
---|---|---|
4a48998f | 1 | /* |
b6147490 | 2 | * linux/drivers/mmc/host/tmio_mmc.c |
4a48998f | 3 | * |
b6147490 GL |
4 | * Copyright (C) 2007 Ian Molton |
5 | * Copyright (C) 2004 Ian Molton | |
4a48998f IM |
6 | * |
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. | |
10 | * | |
11 | * Driver for the MMC / SD / SDIO cell found in: | |
12 | * | |
e6f2c7ad | 13 | * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3 |
4a48998f | 14 | */ |
e0bc6ff8 | 15 | |
e0bc6ff8 | 16 | #include <linux/device.h> |
4a48998f IM |
17 | #include <linux/mfd/core.h> |
18 | #include <linux/mfd/tmio.h> | |
e0bc6ff8 GL |
19 | #include <linux/mmc/host.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/pagemap.h> | |
22 | #include <linux/scatterlist.h> | |
6ff56e0d | 23 | |
b6147490 | 24 | #include "tmio_mmc.h" |
4a48998f | 25 | |
c8964481 UH |
26 | #ifdef CONFIG_PM_SLEEP |
27 | static int tmio_mmc_suspend(struct device *dev) | |
4a48998f | 28 | { |
c8964481 UH |
29 | struct platform_device *pdev = to_platform_device(dev); |
30 | const struct mfd_cell *cell = mfd_get_cell(pdev); | |
4a48998f IM |
31 | int ret; |
32 | ||
c8964481 | 33 | ret = tmio_mmc_host_suspend(dev); |
4a48998f IM |
34 | |
35 | /* Tell MFD core it can disable us now.*/ | |
36 | if (!ret && cell->disable) | |
c8964481 | 37 | cell->disable(pdev); |
4a48998f IM |
38 | |
39 | return ret; | |
40 | } | |
41 | ||
c8964481 | 42 | static int tmio_mmc_resume(struct device *dev) |
4a48998f | 43 | { |
c8964481 UH |
44 | struct platform_device *pdev = to_platform_device(dev); |
45 | const struct mfd_cell *cell = mfd_get_cell(pdev); | |
4a48998f IM |
46 | int ret = 0; |
47 | ||
4a48998f | 48 | /* Tell the MFD core we are ready to be enabled */ |
e6ee7182 | 49 | if (cell->resume) |
c8964481 | 50 | ret = cell->resume(pdev); |
4a48998f | 51 | |
e6ee7182 | 52 | if (!ret) |
c8964481 | 53 | ret = tmio_mmc_host_resume(dev); |
4a48998f | 54 | |
4a48998f IM |
55 | return ret; |
56 | } | |
4a48998f IM |
57 | #endif |
58 | ||
c3be1efd | 59 | static int tmio_mmc_probe(struct platform_device *pdev) |
4a48998f | 60 | { |
b6147490 | 61 | const struct mfd_cell *cell = mfd_get_cell(pdev); |
f0e46cc4 | 62 | struct tmio_mmc_data *pdata; |
4a48998f | 63 | struct tmio_mmc_host *host; |
3b159a6e | 64 | struct resource *res; |
8e7bfdb3 | 65 | int ret = -EINVAL, irq; |
4a48998f | 66 | |
b6147490 | 67 | if (pdev->num_resources != 2) |
4a48998f IM |
68 | goto out; |
69 | ||
ec71974f | 70 | pdata = pdev->dev.platform_data; |
d6c9b5ed | 71 | if (!pdata || !pdata->hclk) |
f0e46cc4 | 72 | goto out; |
d6c9b5ed | 73 | |
8e7bfdb3 MD |
74 | irq = platform_get_irq(pdev, 0); |
75 | if (irq < 0) { | |
76 | ret = irq; | |
77 | goto out; | |
78 | } | |
79 | ||
4a48998f IM |
80 | /* Tell the MFD core we are ready to be enabled */ |
81 | if (cell->enable) { | |
b6147490 | 82 | ret = cell->enable(pdev); |
4a48998f | 83 | if (ret) |
b6147490 | 84 | goto out; |
4a48998f IM |
85 | } |
86 | ||
3b159a6e KM |
87 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
88 | if (!res) | |
89 | return -EINVAL; | |
90 | ||
91 | /* SD control register space size is 0x200, 0x400 for bus_shift=1 */ | |
1e0bf16c | 92 | pdata->bus_shift = resource_size(res) >> 10; |
5d60e500 | 93 | pdata->flags |= TMIO_MMC_HAVE_HIGH_REG; |
3b159a6e | 94 | |
b6147490 | 95 | ret = tmio_mmc_host_probe(&host, pdev, pdata); |
4a48998f | 96 | if (ret) |
7ee422dc | 97 | goto cell_disable; |
4a48998f | 98 | |
d9618e9f YZ |
99 | ret = request_irq(irq, tmio_mmc_irq, IRQF_TRIGGER_FALLING, |
100 | dev_name(&pdev->dev), host); | |
8e7bfdb3 MD |
101 | if (ret) |
102 | goto host_remove; | |
103 | ||
311f3ac7 | 104 | pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc), |
8e7bfdb3 | 105 | (unsigned long)host->ctl, irq); |
4a48998f | 106 | |
4a48998f IM |
107 | return 0; |
108 | ||
8e7bfdb3 MD |
109 | host_remove: |
110 | tmio_mmc_host_remove(host); | |
7ee422dc MD |
111 | cell_disable: |
112 | if (cell->disable) | |
b6147490 | 113 | cell->disable(pdev); |
4a48998f IM |
114 | out: |
115 | return ret; | |
116 | } | |
117 | ||
6e0ee714 | 118 | static int tmio_mmc_remove(struct platform_device *pdev) |
4a48998f | 119 | { |
b6147490 GL |
120 | const struct mfd_cell *cell = mfd_get_cell(pdev); |
121 | struct mmc_host *mmc = platform_get_drvdata(pdev); | |
4a48998f | 122 | |
4a48998f | 123 | if (mmc) { |
8e7bfdb3 MD |
124 | struct tmio_mmc_host *host = mmc_priv(mmc); |
125 | free_irq(platform_get_irq(pdev, 0), host); | |
126 | tmio_mmc_host_remove(host); | |
7ee422dc | 127 | if (cell->disable) |
b6147490 | 128 | cell->disable(pdev); |
4a48998f IM |
129 | } |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | /* ------------------- device registration ----------------------- */ | |
135 | ||
c8964481 UH |
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 | }; | |
139 | ||
4a48998f IM |
140 | static struct platform_driver tmio_mmc_driver = { |
141 | .driver = { | |
142 | .name = "tmio-mmc", | |
143 | .owner = THIS_MODULE, | |
c8964481 | 144 | .pm = &tmio_mmc_dev_pm_ops, |
4a48998f IM |
145 | }, |
146 | .probe = tmio_mmc_probe, | |
0433c143 | 147 | .remove = tmio_mmc_remove, |
4a48998f IM |
148 | }; |
149 | ||
d1f81a64 | 150 | module_platform_driver(tmio_mmc_driver); |
4a48998f IM |
151 | |
152 | MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver"); | |
153 | MODULE_AUTHOR("Ian Molton <spyro@f2s.com>"); | |
154 | MODULE_LICENSE("GPL v2"); | |
155 | MODULE_ALIAS("platform:tmio-mmc"); |