Commit | Line | Data |
---|---|---|
4a48998f | 1 | /* |
b21f13d8 SH |
2 | * Driver for the MMC / SD / SDIO cell found in: |
3 | * | |
4 | * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3 | |
4a48998f | 5 | * |
87317c4d SH |
6 | * Copyright (C) 2017 Renesas Electronics Corporation |
7 | * Copyright (C) 2017 Horms Solutions, Simon Horman | |
b6147490 GL |
8 | * Copyright (C) 2007 Ian Molton |
9 | * Copyright (C) 2004 Ian Molton | |
4a48998f IM |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
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 | |
b21fc294 | 95 | host = tmio_mmc_host_alloc(pdev, pdata); |
8d09a133 MY |
96 | if (IS_ERR(host)) { |
97 | ret = PTR_ERR(host); | |
7ee422dc | 98 | goto cell_disable; |
8d09a133 | 99 | } |
4a48998f | 100 | |
7445bf9e KM |
101 | /* SD control register space size is 0x200, 0x400 for bus_shift=1 */ |
102 | host->bus_shift = resource_size(res) >> 10; | |
103 | ||
b21fc294 MY |
104 | host->mmc->f_max = pdata->hclk; |
105 | host->mmc->f_min = pdata->hclk / 512; | |
106 | ||
107 | ret = tmio_mmc_host_probe(host, NULL); | |
94b110af KM |
108 | if (ret) |
109 | goto host_free; | |
110 | ||
de501af9 | 111 | ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, |
f2218db8 SH |
112 | IRQF_TRIGGER_FALLING, |
113 | dev_name(&pdev->dev), host); | |
8e7bfdb3 MD |
114 | if (ret) |
115 | goto host_remove; | |
116 | ||
311f3ac7 | 117 | pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc), |
8e7bfdb3 | 118 | (unsigned long)host->ctl, irq); |
4a48998f | 119 | |
4a48998f IM |
120 | return 0; |
121 | ||
8e7bfdb3 MD |
122 | host_remove: |
123 | tmio_mmc_host_remove(host); | |
94b110af KM |
124 | host_free: |
125 | tmio_mmc_host_free(host); | |
7ee422dc MD |
126 | cell_disable: |
127 | if (cell->disable) | |
b6147490 | 128 | cell->disable(pdev); |
4a48998f IM |
129 | out: |
130 | return ret; | |
131 | } | |
132 | ||
6e0ee714 | 133 | static int tmio_mmc_remove(struct platform_device *pdev) |
4a48998f | 134 | { |
b6147490 | 135 | const struct mfd_cell *cell = mfd_get_cell(pdev); |
a3b05373 | 136 | struct tmio_mmc_host *host = platform_get_drvdata(pdev); |
4a48998f | 137 | |
a3b05373 MY |
138 | tmio_mmc_host_remove(host); |
139 | if (cell->disable) | |
140 | cell->disable(pdev); | |
4a48998f IM |
141 | |
142 | return 0; | |
143 | } | |
144 | ||
145 | /* ------------------- device registration ----------------------- */ | |
146 | ||
c8964481 UH |
147 | static const struct dev_pm_ops tmio_mmc_dev_pm_ops = { |
148 | SET_SYSTEM_SLEEP_PM_OPS(tmio_mmc_suspend, tmio_mmc_resume) | |
6ed23b80 | 149 | SET_RUNTIME_PM_OPS(tmio_mmc_host_runtime_suspend, |
f2218db8 | 150 | tmio_mmc_host_runtime_resume, NULL) |
c8964481 UH |
151 | }; |
152 | ||
4a48998f IM |
153 | static struct platform_driver tmio_mmc_driver = { |
154 | .driver = { | |
155 | .name = "tmio-mmc", | |
c8964481 | 156 | .pm = &tmio_mmc_dev_pm_ops, |
4a48998f IM |
157 | }, |
158 | .probe = tmio_mmc_probe, | |
0433c143 | 159 | .remove = tmio_mmc_remove, |
4a48998f IM |
160 | }; |
161 | ||
d1f81a64 | 162 | module_platform_driver(tmio_mmc_driver); |
4a48998f IM |
163 | |
164 | MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver"); | |
165 | MODULE_AUTHOR("Ian Molton <spyro@f2s.com>"); | |
166 | MODULE_LICENSE("GPL v2"); | |
167 | MODULE_ALIAS("platform:tmio-mmc"); |