sound: fix drivers needing module.h not moduleparam.h
[linux-2.6.git] / sound / drivers / pcsp / pcsp.c
1 /*
2  * PC-Speaker driver for Linux
3  *
4  * Copyright (C) 1997-2001  David Woodhouse
5  * Copyright (C) 2001-2008  Stas Sergeev
6  */
7
8 #include <linux/init.h>
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <sound/core.h>
12 #include <sound/initval.h>
13 #include <sound/pcm.h>
14 #include <linux/input.h>
15 #include <linux/delay.h>
16 #include <asm/bitops.h>
17 #include "pcsp_input.h"
18 #include "pcsp.h"
19
20 MODULE_AUTHOR("Stas Sergeev <stsp@users.sourceforge.net>");
21 MODULE_DESCRIPTION("PC-Speaker driver");
22 MODULE_LICENSE("GPL");
23 MODULE_SUPPORTED_DEVICE("{{PC-Speaker, pcsp}}");
24 MODULE_ALIAS("platform:pcspkr");
25
26 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
27 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
28 static int enable = SNDRV_DEFAULT_ENABLE1;      /* Enable this card */
29 static int nopcm;       /* Disable PCM capability of the driver */
30
31 module_param(index, int, 0444);
32 MODULE_PARM_DESC(index, "Index value for pcsp soundcard.");
33 module_param(id, charp, 0444);
34 MODULE_PARM_DESC(id, "ID string for pcsp soundcard.");
35 module_param(enable, bool, 0444);
36 MODULE_PARM_DESC(enable, "Enable PC-Speaker sound.");
37 module_param(nopcm, bool, 0444);
38 MODULE_PARM_DESC(nopcm, "Disable PC-Speaker PCM sound. Only beeps remain.");
39
40 struct snd_pcsp pcsp_chip;
41
42 static int __devinit snd_pcsp_create(struct snd_card *card)
43 {
44         static struct snd_device_ops ops = { };
45         struct timespec tp;
46         int err;
47         int div, min_div, order;
48
49         if (!nopcm) {
50                 hrtimer_get_res(CLOCK_MONOTONIC, &tp);
51                 if (tp.tv_sec || tp.tv_nsec > PCSP_MAX_PERIOD_NS) {
52                         printk(KERN_ERR "PCSP: Timer resolution is not sufficient "
53                                 "(%linS)\n", tp.tv_nsec);
54                         printk(KERN_ERR "PCSP: Make sure you have HPET and ACPI "
55                                 "enabled.\n");
56                         printk(KERN_ERR "PCSP: Turned into nopcm mode.\n");
57                         nopcm = 1;
58                 }
59         }
60
61         if (loops_per_jiffy >= PCSP_MIN_LPJ && tp.tv_nsec <= PCSP_MIN_PERIOD_NS)
62                 min_div = MIN_DIV;
63         else
64                 min_div = MAX_DIV;
65 #if PCSP_DEBUG
66         printk(KERN_DEBUG "PCSP: lpj=%li, min_div=%i, res=%li\n",
67                loops_per_jiffy, min_div, tp.tv_nsec);
68 #endif
69
70         div = MAX_DIV / min_div;
71         order = fls(div) - 1;
72
73         pcsp_chip.max_treble = min(order, PCSP_MAX_TREBLE);
74         pcsp_chip.treble = min(pcsp_chip.max_treble, PCSP_DEFAULT_TREBLE);
75         pcsp_chip.playback_ptr = 0;
76         pcsp_chip.period_ptr = 0;
77         atomic_set(&pcsp_chip.timer_active, 0);
78         pcsp_chip.enable = 1;
79         pcsp_chip.pcspkr = 1;
80
81         spin_lock_init(&pcsp_chip.substream_lock);
82
83         pcsp_chip.card = card;
84         pcsp_chip.port = 0x61;
85         pcsp_chip.irq = -1;
86         pcsp_chip.dma = -1;
87
88         /* Register device */
89         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, &pcsp_chip, &ops);
90         if (err < 0)
91                 return err;
92
93         return 0;
94 }
95
96 static int __devinit snd_card_pcsp_probe(int devnum, struct device *dev)
97 {
98         struct snd_card *card;
99         int err;
100
101         if (devnum != 0)
102                 return -EINVAL;
103
104         hrtimer_init(&pcsp_chip.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
105         pcsp_chip.timer.function = pcsp_do_timer;
106
107         err = snd_card_create(index, id, THIS_MODULE, 0, &card);
108         if (err < 0)
109                 return err;
110
111         err = snd_pcsp_create(card);
112         if (err < 0) {
113                 snd_card_free(card);
114                 return err;
115         }
116         if (!nopcm) {
117                 err = snd_pcsp_new_pcm(&pcsp_chip);
118                 if (err < 0) {
119                         snd_card_free(card);
120                         return err;
121                 }
122         }
123         err = snd_pcsp_new_mixer(&pcsp_chip, nopcm);
124         if (err < 0) {
125                 snd_card_free(card);
126                 return err;
127         }
128
129         snd_card_set_dev(pcsp_chip.card, dev);
130
131         strcpy(card->driver, "PC-Speaker");
132         strcpy(card->shortname, "pcsp");
133         sprintf(card->longname, "Internal PC-Speaker at port 0x%x",
134                 pcsp_chip.port);
135
136         err = snd_card_register(card);
137         if (err < 0) {
138                 snd_card_free(card);
139                 return err;
140         }
141
142         return 0;
143 }
144
145 static int __devinit alsa_card_pcsp_init(struct device *dev)
146 {
147         int err;
148
149         err = snd_card_pcsp_probe(0, dev);
150         if (err) {
151                 printk(KERN_ERR "PC-Speaker initialization failed.\n");
152                 return err;
153         }
154
155 #ifdef CONFIG_DEBUG_PAGEALLOC
156         /* Well, CONFIG_DEBUG_PAGEALLOC makes the sound horrible. Lets alert */
157         printk(KERN_WARNING "PCSP: CONFIG_DEBUG_PAGEALLOC is enabled, "
158                "which may make the sound noisy.\n");
159 #endif
160
161         return 0;
162 }
163
164 static void __devexit alsa_card_pcsp_exit(struct snd_pcsp *chip)
165 {
166         snd_card_free(chip->card);
167 }
168
169 static int __devinit pcsp_probe(struct platform_device *dev)
170 {
171         int err;
172
173         err = pcspkr_input_init(&pcsp_chip.input_dev, &dev->dev);
174         if (err < 0)
175                 return err;
176
177         err = alsa_card_pcsp_init(&dev->dev);
178         if (err < 0) {
179                 pcspkr_input_remove(pcsp_chip.input_dev);
180                 return err;
181         }
182
183         platform_set_drvdata(dev, &pcsp_chip);
184         return 0;
185 }
186
187 static int __devexit pcsp_remove(struct platform_device *dev)
188 {
189         struct snd_pcsp *chip = platform_get_drvdata(dev);
190         alsa_card_pcsp_exit(chip);
191         pcspkr_input_remove(chip->input_dev);
192         platform_set_drvdata(dev, NULL);
193         return 0;
194 }
195
196 static void pcsp_stop_beep(struct snd_pcsp *chip)
197 {
198         pcsp_sync_stop(chip);
199         pcspkr_stop_sound();
200 }
201
202 #ifdef CONFIG_PM
203 static int pcsp_suspend(struct platform_device *dev, pm_message_t state)
204 {
205         struct snd_pcsp *chip = platform_get_drvdata(dev);
206         pcsp_stop_beep(chip);
207         snd_pcm_suspend_all(chip->pcm);
208         return 0;
209 }
210 #else
211 #define pcsp_suspend NULL
212 #endif  /* CONFIG_PM */
213
214 static void pcsp_shutdown(struct platform_device *dev)
215 {
216         struct snd_pcsp *chip = platform_get_drvdata(dev);
217         pcsp_stop_beep(chip);
218 }
219
220 static struct platform_driver pcsp_platform_driver = {
221         .driver         = {
222                 .name   = "pcspkr",
223                 .owner  = THIS_MODULE,
224         },
225         .probe          = pcsp_probe,
226         .remove         = __devexit_p(pcsp_remove),
227         .suspend        = pcsp_suspend,
228         .shutdown       = pcsp_shutdown,
229 };
230
231 static int __init pcsp_init(void)
232 {
233         if (!enable)
234                 return -ENODEV;
235         return platform_driver_register(&pcsp_platform_driver);
236 }
237
238 static void __exit pcsp_exit(void)
239 {
240         platform_driver_unregister(&pcsp_platform_driver);
241 }
242
243 module_init(pcsp_init);
244 module_exit(pcsp_exit);