]>
Commit | Line | Data |
---|---|---|
cbdfb426 IM |
1 | /* |
2 | * Toshiba TC6387XB support | |
3 | * Copyright (c) 2005 Ian Molton | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This file contains TC6387XB base support. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/platform_device.h> | |
7acb706c | 15 | #include <linux/clk.h> |
cbdfb426 IM |
16 | #include <linux/err.h> |
17 | #include <linux/mfd/core.h> | |
18 | #include <linux/mfd/tmio.h> | |
19 | #include <linux/mfd/tc6387xb.h> | |
5a0e3ad6 | 20 | #include <linux/slab.h> |
cbdfb426 | 21 | |
d2432a63 IM |
22 | enum { |
23 | TC6387XB_CELL_MMC, | |
24 | }; | |
25 | ||
64e8867b IM |
26 | struct tc6387xb { |
27 | void __iomem *scr; | |
28 | struct clk *clk32k; | |
29 | struct resource rscr; | |
30 | }; | |
31 | ||
32 | static struct resource tc6387xb_mmc_resources[] = { | |
33 | { | |
34 | .start = 0x800, | |
35 | .end = 0x9ff, | |
36 | .flags = IORESOURCE_MEM, | |
37 | }, | |
38 | { | |
39 | .start = 0, | |
40 | .end = 0, | |
41 | .flags = IORESOURCE_IRQ, | |
42 | }, | |
43 | }; | |
44 | ||
45 | /*--------------------------------------------------------------------------*/ | |
46 | ||
cbdfb426 IM |
47 | #ifdef CONFIG_PM |
48 | static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state) | |
49 | { | |
64e8867b | 50 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); |
334a41ce | 51 | struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev); |
cbdfb426 IM |
52 | |
53 | if (pdata && pdata->suspend) | |
54 | pdata->suspend(dev); | |
7263bd39 | 55 | clk_disable_unprepare(tc6387xb->clk32k); |
cbdfb426 IM |
56 | |
57 | return 0; | |
58 | } | |
59 | ||
60 | static int tc6387xb_resume(struct platform_device *dev) | |
61 | { | |
64e8867b | 62 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); |
334a41ce | 63 | struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev); |
cbdfb426 | 64 | |
7263bd39 | 65 | clk_prepare_enable(tc6387xb->clk32k); |
cbdfb426 IM |
66 | if (pdata && pdata->resume) |
67 | pdata->resume(dev); | |
68 | ||
64e8867b IM |
69 | tmio_core_mmc_resume(tc6387xb->scr + 0x200, 0, |
70 | tc6387xb_mmc_resources[0].start & 0xfffe); | |
71 | ||
cbdfb426 IM |
72 | return 0; |
73 | } | |
74 | #else | |
75 | #define tc6387xb_suspend NULL | |
76 | #define tc6387xb_resume NULL | |
77 | #endif | |
78 | ||
79 | /*--------------------------------------------------------------------------*/ | |
80 | ||
64e8867b IM |
81 | static void tc6387xb_mmc_pwr(struct platform_device *mmc, int state) |
82 | { | |
ed835136 | 83 | struct tc6387xb *tc6387xb = dev_get_drvdata(mmc->dev.parent); |
64e8867b IM |
84 | |
85 | tmio_core_mmc_pwr(tc6387xb->scr + 0x200, 0, state); | |
86 | } | |
87 | ||
88 | static void tc6387xb_mmc_clk_div(struct platform_device *mmc, int state) | |
89 | { | |
ed835136 | 90 | struct tc6387xb *tc6387xb = dev_get_drvdata(mmc->dev.parent); |
64e8867b IM |
91 | |
92 | tmio_core_mmc_clk_div(tc6387xb->scr + 0x200, 0, state); | |
93 | } | |
94 | ||
95 | ||
cbdfb426 IM |
96 | static int tc6387xb_mmc_enable(struct platform_device *mmc) |
97 | { | |
ed835136 | 98 | struct tc6387xb *tc6387xb = dev_get_drvdata(mmc->dev.parent); |
cbdfb426 | 99 | |
7263bd39 | 100 | clk_prepare_enable(tc6387xb->clk32k); |
64e8867b IM |
101 | |
102 | tmio_core_mmc_enable(tc6387xb->scr + 0x200, 0, | |
103 | tc6387xb_mmc_resources[0].start & 0xfffe); | |
cbdfb426 IM |
104 | |
105 | return 0; | |
106 | } | |
107 | ||
108 | static int tc6387xb_mmc_disable(struct platform_device *mmc) | |
109 | { | |
ed835136 | 110 | struct tc6387xb *tc6387xb = dev_get_drvdata(mmc->dev.parent); |
cbdfb426 | 111 | |
7263bd39 | 112 | clk_disable_unprepare(tc6387xb->clk32k); |
cbdfb426 IM |
113 | |
114 | return 0; | |
115 | } | |
116 | ||
4d3792e0 | 117 | static struct tmio_mmc_data tc6387xb_mmc_data = { |
f0e46cc4 | 118 | .hclk = 24000000, |
64e8867b IM |
119 | .set_pwr = tc6387xb_mmc_pwr, |
120 | .set_clk_div = tc6387xb_mmc_clk_div, | |
f0e46cc4 PZ |
121 | }; |
122 | ||
64e8867b | 123 | /*--------------------------------------------------------------------------*/ |
cbdfb426 | 124 | |
afb580a9 | 125 | static const struct mfd_cell tc6387xb_cells[] = { |
d2432a63 | 126 | [TC6387XB_CELL_MMC] = { |
cbdfb426 IM |
127 | .name = "tmio-mmc", |
128 | .enable = tc6387xb_mmc_enable, | |
129 | .disable = tc6387xb_mmc_disable, | |
ec71974f SO |
130 | .platform_data = &tc6387xb_mmc_data, |
131 | .pdata_size = sizeof(tc6387xb_mmc_data), | |
cbdfb426 IM |
132 | .num_resources = ARRAY_SIZE(tc6387xb_mmc_resources), |
133 | .resources = tc6387xb_mmc_resources, | |
134 | }, | |
135 | }; | |
136 | ||
f791be49 | 137 | static int tc6387xb_probe(struct platform_device *dev) |
cbdfb426 | 138 | { |
334a41ce | 139 | struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev); |
64e8867b | 140 | struct resource *iomem, *rscr; |
7acb706c | 141 | struct clk *clk32k; |
64e8867b | 142 | struct tc6387xb *tc6387xb; |
cbdfb426 IM |
143 | int irq, ret; |
144 | ||
145 | iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
d5ce79ff | 146 | if (!iomem) |
7acb706c | 147 | return -EINVAL; |
cbdfb426 | 148 | |
d5ce79ff | 149 | tc6387xb = kzalloc(sizeof(*tc6387xb), GFP_KERNEL); |
64e8867b IM |
150 | if (!tc6387xb) |
151 | return -ENOMEM; | |
152 | ||
cbdfb426 IM |
153 | ret = platform_get_irq(dev, 0); |
154 | if (ret >= 0) | |
155 | irq = ret; | |
156 | else | |
64e8867b | 157 | goto err_no_irq; |
cbdfb426 | 158 | |
7acb706c IM |
159 | clk32k = clk_get(&dev->dev, "CLK_CK32K"); |
160 | if (IS_ERR(clk32k)) { | |
161 | ret = PTR_ERR(clk32k); | |
64e8867b IM |
162 | goto err_no_clk; |
163 | } | |
164 | ||
165 | rscr = &tc6387xb->rscr; | |
166 | rscr->name = "tc6387xb-core"; | |
167 | rscr->start = iomem->start; | |
168 | rscr->end = iomem->start + 0xff; | |
169 | rscr->flags = IORESOURCE_MEM; | |
170 | ||
171 | ret = request_resource(iomem, rscr); | |
172 | if (ret) | |
7acb706c | 173 | goto err_resource; |
64e8867b | 174 | |
28f65c11 | 175 | tc6387xb->scr = ioremap(rscr->start, resource_size(rscr)); |
64e8867b IM |
176 | if (!tc6387xb->scr) { |
177 | ret = -ENOMEM; | |
178 | goto err_ioremap; | |
7acb706c | 179 | } |
64e8867b IM |
180 | |
181 | tc6387xb->clk32k = clk32k; | |
182 | platform_set_drvdata(dev, tc6387xb); | |
7acb706c IM |
183 | |
184 | if (pdata && pdata->enable) | |
185 | pdata->enable(dev); | |
cbdfb426 | 186 | |
d5ce79ff | 187 | dev_info(&dev->dev, "Toshiba tc6387xb initialised\n"); |
cbdfb426 | 188 | |
56bf2bda | 189 | ret = mfd_add_devices(&dev->dev, dev->id, tc6387xb_cells, |
0848c94f | 190 | ARRAY_SIZE(tc6387xb_cells), iomem, irq, NULL); |
cbdfb426 IM |
191 | |
192 | if (!ret) | |
193 | return 0; | |
194 | ||
08b877b8 | 195 | iounmap(tc6387xb->scr); |
64e8867b IM |
196 | err_ioremap: |
197 | release_resource(&tc6387xb->rscr); | |
cbdfb426 | 198 | err_resource: |
64e8867b IM |
199 | clk_put(clk32k); |
200 | err_no_clk: | |
201 | err_no_irq: | |
202 | kfree(tc6387xb); | |
cbdfb426 IM |
203 | return ret; |
204 | } | |
205 | ||
4740f73f | 206 | static int tc6387xb_remove(struct platform_device *dev) |
cbdfb426 | 207 | { |
08b877b8 | 208 | struct tc6387xb *tc6387xb = platform_get_drvdata(dev); |
cbdfb426 | 209 | |
7acb706c | 210 | mfd_remove_devices(&dev->dev); |
08b877b8 AL |
211 | iounmap(tc6387xb->scr); |
212 | release_resource(&tc6387xb->rscr); | |
7263bd39 | 213 | clk_disable_unprepare(tc6387xb->clk32k); |
08b877b8 | 214 | clk_put(tc6387xb->clk32k); |
08b877b8 | 215 | kfree(tc6387xb); |
cbdfb426 IM |
216 | |
217 | return 0; | |
218 | } | |
219 | ||
220 | ||
221 | static struct platform_driver tc6387xb_platform_driver = { | |
222 | .driver = { | |
223 | .name = "tc6387xb", | |
224 | }, | |
225 | .probe = tc6387xb_probe, | |
84449216 | 226 | .remove = tc6387xb_remove, |
cbdfb426 IM |
227 | .suspend = tc6387xb_suspend, |
228 | .resume = tc6387xb_resume, | |
229 | }; | |
230 | ||
65349d60 | 231 | module_platform_driver(tc6387xb_platform_driver); |
cbdfb426 IM |
232 | |
233 | MODULE_DESCRIPTION("Toshiba TC6387XB core driver"); | |
234 | MODULE_LICENSE("GPL v2"); | |
235 | MODULE_AUTHOR("Ian Molton"); | |
236 | MODULE_ALIAS("platform:tc6387xb"); | |
64e8867b | 237 |