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22#include <linux/init.h>
23#include <linux/err.h>
24#include <linux/isa.h>
25#include <linux/delay.h>
26#include <linux/time.h>
27#include <linux/module.h>
28#include <asm/dma.h>
29#include <sound/core.h>
30#include <sound/gus.h>
31#define SNDRV_LEGACY_FIND_FREE_IRQ
32#define SNDRV_LEGACY_FIND_FREE_DMA
33#include <sound/initval.h>
34
35#define CRD_NAME "Gravis UltraSound Classic"
36#define DEV_NAME "gusclassic"
37
38MODULE_DESCRIPTION(CRD_NAME);
39MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
40MODULE_LICENSE("GPL");
41MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}");
42
43static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
44static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
45static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
46static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
47static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
48static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
49static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
50static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
51
52static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
53static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
54
55module_param_array(index, int, NULL, 0444);
56MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
57module_param_array(id, charp, NULL, 0444);
58MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
59module_param_array(enable, bool, NULL, 0444);
60MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
61module_param_array(port, long, NULL, 0444);
62MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
63module_param_array(irq, int, NULL, 0444);
64MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
65module_param_array(dma1, int, NULL, 0444);
66MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
67module_param_array(dma2, int, NULL, 0444);
68MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
69module_param_array(joystick_dac, int, NULL, 0444);
70MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for " CRD_NAME " driver.");
71module_param_array(channels, int, NULL, 0444);
72MODULE_PARM_DESC(channels, "GF1 channels for " CRD_NAME " driver.");
73module_param_array(pcm_channels, int, NULL, 0444);
74MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for " CRD_NAME " driver.");
75
76static int snd_gusclassic_match(struct device *dev, unsigned int n)
77{
78 return enable[n];
79}
80
81static int snd_gusclassic_create(struct snd_card *card,
82 struct device *dev, unsigned int n,
83 struct snd_gus_card **rgus)
84{
85 static long possible_ports[] = {0x220, 0x230, 0x240, 0x250, 0x260};
86 static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
87 static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
88
89 int i, error;
90
91 if (irq[n] == SNDRV_AUTO_IRQ) {
92 irq[n] = snd_legacy_find_free_irq(possible_irqs);
93 if (irq[n] < 0) {
94 dev_err(dev, "unable to find a free IRQ\n");
95 return -EBUSY;
96 }
97 }
98 if (dma1[n] == SNDRV_AUTO_DMA) {
99 dma1[n] = snd_legacy_find_free_dma(possible_dmas);
100 if (dma1[n] < 0) {
101 dev_err(dev, "unable to find a free DMA1\n");
102 return -EBUSY;
103 }
104 }
105 if (dma2[n] == SNDRV_AUTO_DMA) {
106 dma2[n] = snd_legacy_find_free_dma(possible_dmas);
107 if (dma2[n] < 0) {
108 dev_err(dev, "unable to find a free DMA2\n");
109 return -EBUSY;
110 }
111 }
112
113 if (port[n] != SNDRV_AUTO_PORT)
114 return snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
115 0, channels[n], pcm_channels[n], 0, rgus);
116
117 i = 0;
118 do {
119 port[n] = possible_ports[i];
120 error = snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
121 0, channels[n], pcm_channels[n], 0, rgus);
122 } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
123
124 return error;
125}
126
127static int snd_gusclassic_detect(struct snd_gus_card *gus)
128{
129 unsigned char d;
130
131 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);
132 if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
133 snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
134 return -ENODEV;
135 }
136 udelay(160);
137 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);
138 udelay(160);
139 if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
140 snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
141 return -ENODEV;
142 }
143 return 0;
144}
145
146static int snd_gusclassic_probe(struct device *dev, unsigned int n)
147{
148 struct snd_card *card;
149 struct snd_gus_card *gus;
150 int error;
151
152 error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
153 if (error < 0)
154 return error;
155
156 if (pcm_channels[n] < 2)
157 pcm_channels[n] = 2;
158
159 error = snd_gusclassic_create(card, dev, n, &gus);
160 if (error < 0)
161 goto out;
162
163 error = snd_gusclassic_detect(gus);
164 if (error < 0)
165 goto out;
166
167 gus->joystick_dac = joystick_dac[n];
168
169 error = snd_gus_initialize(gus);
170 if (error < 0)
171 goto out;
172
173 error = -ENODEV;
174 if (gus->max_flag || gus->ess_flag) {
175 dev_err(dev, "GUS Classic or ACE soundcard was "
176 "not detected at 0x%lx\n", gus->gf1.port);
177 goto out;
178 }
179
180 error = snd_gf1_new_mixer(gus);
181 if (error < 0)
182 goto out;
183
184 error = snd_gf1_pcm_new(gus, 0, 0);
185 if (error < 0)
186 goto out;
187
188 if (!gus->ace_flag) {
189 error = snd_gf1_rawmidi_new(gus, 0);
190 if (error < 0)
191 goto out;
192 }
193
194 sprintf(card->longname + strlen(card->longname),
195 " at 0x%lx, irq %d, dma %d",
196 gus->gf1.port, gus->gf1.irq, gus->gf1.dma1);
197
198 if (gus->gf1.dma2 >= 0)
199 sprintf(card->longname + strlen(card->longname),
200 "&%d", gus->gf1.dma2);
201
202 error = snd_card_register(card);
203 if (error < 0)
204 goto out;
205
206 dev_set_drvdata(dev, card);
207 return 0;
208
209out: snd_card_free(card);
210 return error;
211}
212
213static int snd_gusclassic_remove(struct device *dev, unsigned int n)
214{
215 snd_card_free(dev_get_drvdata(dev));
216 return 0;
217}
218
219static struct isa_driver snd_gusclassic_driver = {
220 .match = snd_gusclassic_match,
221 .probe = snd_gusclassic_probe,
222 .remove = snd_gusclassic_remove,
223#if 0
224 .suspend = snd_gusclassic_suspend,
225 .remove = snd_gusclassic_remove,
226#endif
227 .driver = {
228 .name = DEV_NAME
229 }
230};
231
232static int __init alsa_card_gusclassic_init(void)
233{
234 return isa_register_driver(&snd_gusclassic_driver, SNDRV_CARDS);
235}
236
237static void __exit alsa_card_gusclassic_exit(void)
238{
239 isa_unregister_driver(&snd_gusclassic_driver);
240}
241
242module_init(alsa_card_gusclassic_init);
243module_exit(alsa_card_gusclassic_exit);
244
