dt/sparc: Eliminate users of of_platform_{,un}register_driver
[linux-3.10.git] / drivers / input / misc / sparcspkr.c
1 /*
2  *  Driver for PC-speaker like devices found on various Sparc systems.
3  *
4  *  Copyright (c) 2002 Vojtech Pavlik
5  *  Copyright (c) 2002, 2006, 2008 David S. Miller (davem@davemloft.net)
6  */
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/init.h>
10 #include <linux/input.h>
11 #include <linux/of_device.h>
12 #include <linux/slab.h>
13
14 #include <asm/io.h>
15
16 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
17 MODULE_DESCRIPTION("Sparc Speaker beeper driver");
18 MODULE_LICENSE("GPL");
19
20 struct grover_beep_info {
21         void __iomem    *freq_regs;
22         void __iomem    *enable_reg;
23 };
24
25 struct bbc_beep_info {
26         u32             clock_freq;
27         void __iomem    *regs;
28 };
29
30 struct sparcspkr_state {
31         const char              *name;
32         int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
33         spinlock_t              lock;
34         struct input_dev        *input_dev;
35         union {
36                 struct grover_beep_info grover;
37                 struct bbc_beep_info bbc;
38         } u;
39 };
40
41 static u32 bbc_count_to_reg(struct bbc_beep_info *info, unsigned int count)
42 {
43         u32 val, clock_freq = info->clock_freq;
44         int i;
45
46         if (!count)
47                 return 0;
48
49         if (count <= clock_freq >> 20)
50                 return 1 << 18;
51
52         if (count >= clock_freq >> 12)
53                 return 1 << 10;
54
55         val = 1 << 18;
56         for (i = 19; i >= 11; i--) {
57                 val >>= 1;
58                 if (count <= clock_freq >> i)
59                         break;
60         }
61
62         return val;
63 }
64
65 static int bbc_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
66 {
67         struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent);
68         struct bbc_beep_info *info = &state->u.bbc;
69         unsigned int count = 0;
70         unsigned long flags;
71
72         if (type != EV_SND)
73                 return -1;
74
75         switch (code) {
76                 case SND_BELL: if (value) value = 1000;
77                 case SND_TONE: break;
78                 default: return -1;
79         }
80
81         if (value > 20 && value < 32767)
82                 count = 1193182 / value;
83
84         count = bbc_count_to_reg(info, count);
85
86         spin_lock_irqsave(&state->lock, flags);
87
88         if (count) {
89                 outb(0x01,                 info->regs + 0);
90                 outb(0x00,                 info->regs + 2);
91                 outb((count >> 16) & 0xff, info->regs + 3);
92                 outb((count >>  8) & 0xff, info->regs + 4);
93                 outb(0x00,                 info->regs + 5);
94         } else {
95                 outb(0x00,                 info->regs + 0);
96         }
97
98         spin_unlock_irqrestore(&state->lock, flags);
99
100         return 0;
101 }
102
103 static int grover_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
104 {
105         struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent);
106         struct grover_beep_info *info = &state->u.grover;
107         unsigned int count = 0;
108         unsigned long flags;
109
110         if (type != EV_SND)
111                 return -1;
112
113         switch (code) {
114                 case SND_BELL: if (value) value = 1000;
115                 case SND_TONE: break;
116                 default: return -1;
117         }
118
119         if (value > 20 && value < 32767)
120                 count = 1193182 / value;
121
122         spin_lock_irqsave(&state->lock, flags);
123
124         if (count) {
125                 /* enable counter 2 */
126                 outb(inb(info->enable_reg) | 3, info->enable_reg);
127                 /* set command for counter 2, 2 byte write */
128                 outb(0xB6, info->freq_regs + 1);
129                 /* select desired HZ */
130                 outb(count & 0xff, info->freq_regs + 0);
131                 outb((count >> 8) & 0xff, info->freq_regs + 0);
132         } else {
133                 /* disable counter 2 */
134                 outb(inb_p(info->enable_reg) & 0xFC, info->enable_reg);
135         }
136
137         spin_unlock_irqrestore(&state->lock, flags);
138
139         return 0;
140 }
141
142 static int __devinit sparcspkr_probe(struct device *dev)
143 {
144         struct sparcspkr_state *state = dev_get_drvdata(dev);
145         struct input_dev *input_dev;
146         int error;
147
148         input_dev = input_allocate_device();
149         if (!input_dev)
150                 return -ENOMEM;
151
152         input_dev->name = state->name;
153         input_dev->phys = "sparc/input0";
154         input_dev->id.bustype = BUS_ISA;
155         input_dev->id.vendor = 0x001f;
156         input_dev->id.product = 0x0001;
157         input_dev->id.version = 0x0100;
158         input_dev->dev.parent = dev;
159
160         input_dev->evbit[0] = BIT_MASK(EV_SND);
161         input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
162
163         input_dev->event = state->event;
164
165         error = input_register_device(input_dev);
166         if (error) {
167                 input_free_device(input_dev);
168                 return error;
169         }
170
171         state->input_dev = input_dev;
172
173         return 0;
174 }
175
176 static void sparcspkr_shutdown(struct platform_device *dev)
177 {
178         struct sparcspkr_state *state = dev_get_drvdata(&dev->dev);
179         struct input_dev *input_dev = state->input_dev;
180
181         /* turn off the speaker */
182         state->event(input_dev, EV_SND, SND_BELL, 0);
183 }
184
185 static int __devinit bbc_beep_probe(struct platform_device *op)
186 {
187         struct sparcspkr_state *state;
188         struct bbc_beep_info *info;
189         struct device_node *dp;
190         int err = -ENOMEM;
191
192         state = kzalloc(sizeof(*state), GFP_KERNEL);
193         if (!state)
194                 goto out_err;
195
196         state->name = "Sparc BBC Speaker";
197         state->event = bbc_spkr_event;
198         spin_lock_init(&state->lock);
199
200         dp = of_find_node_by_path("/");
201         err = -ENODEV;
202         if (!dp)
203                 goto out_free;
204
205         info = &state->u.bbc;
206         info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0);
207         if (!info->clock_freq)
208                 goto out_free;
209
210         info->regs = of_ioremap(&op->resource[0], 0, 6, "bbc beep");
211         if (!info->regs)
212                 goto out_free;
213
214         dev_set_drvdata(&op->dev, state);
215
216         err = sparcspkr_probe(&op->dev);
217         if (err)
218                 goto out_clear_drvdata;
219
220         return 0;
221
222 out_clear_drvdata:
223         dev_set_drvdata(&op->dev, NULL);
224         of_iounmap(&op->resource[0], info->regs, 6);
225
226 out_free:
227         kfree(state);
228 out_err:
229         return err;
230 }
231
232 static int __devexit bbc_remove(struct platform_device *op)
233 {
234         struct sparcspkr_state *state = dev_get_drvdata(&op->dev);
235         struct input_dev *input_dev = state->input_dev;
236         struct bbc_beep_info *info = &state->u.bbc;
237
238         /* turn off the speaker */
239         state->event(input_dev, EV_SND, SND_BELL, 0);
240
241         input_unregister_device(input_dev);
242
243         of_iounmap(&op->resource[0], info->regs, 6);
244
245         dev_set_drvdata(&op->dev, NULL);
246         kfree(state);
247
248         return 0;
249 }
250
251 static const struct of_device_id bbc_beep_match[] = {
252         {
253                 .name = "beep",
254                 .compatible = "SUNW,bbc-beep",
255         },
256         {},
257 };
258
259 static struct platform_driver bbc_beep_driver = {
260         .driver = {
261                 .name = "bbcbeep",
262                 .owner = THIS_MODULE,
263                 .of_match_table = bbc_beep_match,
264         },
265         .probe          = bbc_beep_probe,
266         .remove         = __devexit_p(bbc_remove),
267         .shutdown       = sparcspkr_shutdown,
268 };
269
270 static int __devinit grover_beep_probe(struct platform_device *op)
271 {
272         struct sparcspkr_state *state;
273         struct grover_beep_info *info;
274         int err = -ENOMEM;
275
276         state = kzalloc(sizeof(*state), GFP_KERNEL);
277         if (!state)
278                 goto out_err;
279
280         state->name = "Sparc Grover Speaker";
281         state->event = grover_spkr_event;
282         spin_lock_init(&state->lock);
283
284         info = &state->u.grover;
285         info->freq_regs = of_ioremap(&op->resource[2], 0, 2, "grover beep freq");
286         if (!info->freq_regs)
287                 goto out_free;
288
289         info->enable_reg = of_ioremap(&op->resource[3], 0, 1, "grover beep enable");
290         if (!info->enable_reg)
291                 goto out_unmap_freq_regs;
292
293         dev_set_drvdata(&op->dev, state);
294
295         err = sparcspkr_probe(&op->dev);
296         if (err)
297                 goto out_clear_drvdata;
298
299         return 0;
300
301 out_clear_drvdata:
302         dev_set_drvdata(&op->dev, NULL);
303         of_iounmap(&op->resource[3], info->enable_reg, 1);
304
305 out_unmap_freq_regs:
306         of_iounmap(&op->resource[2], info->freq_regs, 2);
307 out_free:
308         kfree(state);
309 out_err:
310         return err;
311 }
312
313 static int __devexit grover_remove(struct platform_device *op)
314 {
315         struct sparcspkr_state *state = dev_get_drvdata(&op->dev);
316         struct grover_beep_info *info = &state->u.grover;
317         struct input_dev *input_dev = state->input_dev;
318
319         /* turn off the speaker */
320         state->event(input_dev, EV_SND, SND_BELL, 0);
321
322         input_unregister_device(input_dev);
323
324         of_iounmap(&op->resource[3], info->enable_reg, 1);
325         of_iounmap(&op->resource[2], info->freq_regs, 2);
326
327         dev_set_drvdata(&op->dev, NULL);
328         kfree(state);
329
330         return 0;
331 }
332
333 static const struct of_device_id grover_beep_match[] = {
334         {
335                 .name = "beep",
336                 .compatible = "SUNW,smbus-beep",
337         },
338         {},
339 };
340
341 static struct platform_driver grover_beep_driver = {
342         .driver = {
343                 .name = "groverbeep",
344                 .owner = THIS_MODULE,
345                 .of_match_table = grover_beep_match,
346         },
347         .probe          = grover_beep_probe,
348         .remove         = __devexit_p(grover_remove),
349         .shutdown       = sparcspkr_shutdown,
350 };
351
352 static int __init sparcspkr_init(void)
353 {
354         int err = platform_driver_register(&bbc_beep_driver);
355
356         if (!err) {
357                 err = platform_driver_register(&grover_beep_driver);
358                 if (err)
359                         platform_driver_unregister(&bbc_beep_driver);
360         }
361
362         return err;
363 }
364
365 static void __exit sparcspkr_exit(void)
366 {
367         platform_driver_unregister(&bbc_beep_driver);
368         platform_driver_unregister(&grover_beep_driver);
369 }
370
371 module_init(sparcspkr_init);
372 module_exit(sparcspkr_exit);