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 | ||
70a15e1a | 33 | ret = pm_runtime_force_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) |
70a15e1a | 53 | ret = pm_runtime_force_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 | 87 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
25db67e2 IM |
88 | if (!res) { |
89 | ret = -EINVAL; | |
90 | goto cell_disable; | |
91 | } | |
3b159a6e | 92 | |
5d60e500 | 93 | pdata->flags |= TMIO_MMC_HAVE_HIGH_REG; |
3b159a6e | 94 | |
94b110af KM |
95 | host = tmio_mmc_host_alloc(pdev); |
96 | if (!host) | |
7ee422dc | 97 | goto cell_disable; |
4a48998f | 98 | |
7445bf9e KM |
99 | /* SD control register space size is 0x200, 0x400 for bus_shift=1 */ |
100 | host->bus_shift = resource_size(res) >> 10; | |
101 | ||
94b110af KM |
102 | ret = tmio_mmc_host_probe(host, pdata); |
103 | if (ret) | |
104 | goto host_free; | |
105 | ||
de501af9 IM |
106 | ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, |
107 | IRQF_TRIGGER_FALLING, | |
d9618e9f | 108 | dev_name(&pdev->dev), host); |
8e7bfdb3 MD |
109 | if (ret) |
110 | goto host_remove; | |
111 | ||
311f3ac7 | 112 | pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc), |
8e7bfdb3 | 113 | (unsigned long)host->ctl, irq); |
4a48998f | 114 | |
4a48998f IM |
115 | return 0; |
116 | ||
8e7bfdb3 MD |
117 | host_remove: |
118 | tmio_mmc_host_remove(host); | |
94b110af KM |
119 | host_free: |
120 | tmio_mmc_host_free(host); | |
7ee422dc MD |
121 | cell_disable: |
122 | if (cell->disable) | |
b6147490 | 123 | cell->disable(pdev); |
4a48998f IM |
124 | out: |
125 | return ret; | |
126 | } | |
127 | ||
6e0ee714 | 128 | static int tmio_mmc_remove(struct platform_device *pdev) |
4a48998f | 129 | { |
b6147490 GL |
130 | const struct mfd_cell *cell = mfd_get_cell(pdev); |
131 | struct mmc_host *mmc = platform_get_drvdata(pdev); | |
4a48998f | 132 | |
4a48998f | 133 | if (mmc) { |
8e7bfdb3 | 134 | struct tmio_mmc_host *host = mmc_priv(mmc); |
8e7bfdb3 | 135 | tmio_mmc_host_remove(host); |
7ee422dc | 136 | if (cell->disable) |
b6147490 | 137 | cell->disable(pdev); |
4a48998f IM |
138 | } |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
143 | /* ------------------- device registration ----------------------- */ | |
144 | ||
c8964481 UH |
145 | static const struct dev_pm_ops tmio_mmc_dev_pm_ops = { |
146 | SET_SYSTEM_SLEEP_PM_OPS(tmio_mmc_suspend, tmio_mmc_resume) | |
6ed23b80 | 147 | SET_RUNTIME_PM_OPS(tmio_mmc_host_runtime_suspend, |
78f76df6 UH |
148 | tmio_mmc_host_runtime_resume, |
149 | NULL) | |
c8964481 UH |
150 | }; |
151 | ||
4a48998f IM |
152 | static struct platform_driver tmio_mmc_driver = { |
153 | .driver = { | |
154 | .name = "tmio-mmc", | |
c8964481 | 155 | .pm = &tmio_mmc_dev_pm_ops, |
4a48998f IM |
156 | }, |
157 | .probe = tmio_mmc_probe, | |
0433c143 | 158 | .remove = tmio_mmc_remove, |
4a48998f IM |
159 | }; |
160 | ||
d1f81a64 | 161 | module_platform_driver(tmio_mmc_driver); |
4a48998f IM |
162 | |
163 | MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver"); | |
164 | MODULE_AUTHOR("Ian Molton <spyro@f2s.com>"); | |
165 | MODULE_LICENSE("GPL v2"); | |
166 | MODULE_ALIAS("platform:tmio-mmc"); |