1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for Gravis UltraSound Classic soundcard
4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
5 */
6
7 #include <linux/init.h>
8 #include <linux/err.h>
9 #include <linux/isa.h>
10 #include <linux/delay.h>
11 #include <linux/time.h>
12 #include <linux/module.h>
13 #include <asm/dma.h>
14 #include <sound/core.h>
15 #include <sound/gus.h>
16 #define SNDRV_LEGACY_FIND_FREE_IRQ
17 #define SNDRV_LEGACY_FIND_FREE_DMA
18 #include <sound/initval.h>
19
20 #define CRD_NAME "Gravis UltraSound Classic"
21 #define DEV_NAME "gusclassic"
22
23 MODULE_DESCRIPTION(CRD_NAME);
24 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
25 MODULE_LICENSE("GPL");
26
27 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
28 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
29 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
30 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x230,0x240,0x250,0x260 */
31 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 3,5,9,11,12,15 */
32 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
33 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
34 static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
35 /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
36 static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
37 static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
38
39 module_param_array(index, int, NULL, 0444);
40 MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
41 module_param_array(id, charp, NULL, 0444);
42 MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
43 module_param_array(enable, bool, NULL, 0444);
44 MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
45 module_param_hw_array(port, long, ioport, NULL, 0444);
46 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
47 module_param_hw_array(irq, int, irq, NULL, 0444);
48 MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
49 module_param_hw_array(dma1, int, dma, NULL, 0444);
50 MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
51 module_param_hw_array(dma2, int, dma, NULL, 0444);
52 MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
53 module_param_array(joystick_dac, int, NULL, 0444);
54 MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for " CRD_NAME " driver.");
55 module_param_array(channels, int, NULL, 0444);
56 MODULE_PARM_DESC(channels, "GF1 channels for " CRD_NAME " driver.");
57 module_param_array(pcm_channels, int, NULL, 0444);
58 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for " CRD_NAME " driver.");
59
60 static int snd_gusclassic_match(struct device *dev, unsigned int n)
61 {
62 return enable[n];
63 }
64
65 static int snd_gusclassic_create(struct snd_card *card,
66 struct device *dev, unsigned int n,
67 struct snd_gus_card **rgus)
68 {
69 static const long possible_ports[] = {0x220, 0x230, 0x240, 0x250, 0x260};
70 static const int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
71 static const int possible_dmas[] = {5, 6, 7, 1, 3, -1};
72
73 int i, error;
74
75 if (irq[n] == SNDRV_AUTO_IRQ) {
76 irq[n] = snd_legacy_find_free_irq(possible_irqs);
77 if (irq[n] < 0) {
78 dev_err(dev, "unable to find a free IRQ\n");
79 return -EBUSY;
80 }
81 }
82 if (dma1[n] == SNDRV_AUTO_DMA) {
83 dma1[n] = snd_legacy_find_free_dma(possible_dmas);
84 if (dma1[n] < 0) {
85 dev_err(dev, "unable to find a free DMA1\n");
86 return -EBUSY;
87 }
88 }
89 if (dma2[n] == SNDRV_AUTO_DMA) {
90 dma2[n] = snd_legacy_find_free_dma(possible_dmas);
91 if (dma2[n] < 0) {
92 dev_err(dev, "unable to find a free DMA2\n");
93 return -EBUSY;
94 }
95 }
96
97 if (port[n] != SNDRV_AUTO_PORT)
98 return snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
99 0, channels[n], pcm_channels[n], 0, rgus);
100
101 i = 0;
102 do {
103 port[n] = possible_ports[i];
104 error = snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
105 0, channels[n], pcm_channels[n], 0, rgus);
106 } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
107
108 return error;
109 }
110
111 static int snd_gusclassic_detect(struct snd_gus_card *gus)
112 {
113 unsigned char d;
114
115 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
116 d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
117 if ((d & 0x07) != 0) {
118 snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
119 return -ENODEV;
120 }
121 udelay(160);
122 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */
123 udelay(160);
124 d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
125 if ((d & 0x07) != 1) {
126 snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
127 return -ENODEV;
128 }
129 return 0;
130 }
131
132 static int snd_gusclassic_probe(struct device *dev, unsigned int n)
133 {
134 struct snd_card *card;
135 struct snd_gus_card *gus;
136 int error;
137
138 error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
139 if (error < 0)
140 return error;
141
142 if (pcm_channels[n] < 2)
143 pcm_channels[n] = 2;
144
145 error = snd_gusclassic_create(card, dev, n, &gus);
146 if (error < 0)
147 return error;
148
149 error = snd_gusclassic_detect(gus);
150 if (error < 0)
151 return error;
152
153 gus->joystick_dac = joystick_dac[n];
154
155 error = snd_gus_initialize(gus);
156 if (error < 0)
157 return error;
158
159 error = -ENODEV;
160 if (gus->max_flag || gus->ess_flag) {
161 dev_err(dev, "GUS Classic or ACE soundcard was "
162 "not detected at 0x%lx\n", gus->gf1.port);
163 return error;
164 }
165
166 error = snd_gf1_new_mixer(gus);
167 if (error < 0)
168 return error;
169
170 error = snd_gf1_pcm_new(gus, 0, 0);
171 if (error < 0)
172 return error;
173
174 if (!gus->ace_flag) {
175 error = snd_gf1_rawmidi_new(gus, 0);
176 if (error < 0)
177 return error;
178 }
179
180 sprintf(card->longname + strlen(card->longname),
181 " at 0x%lx, irq %d, dma %d",
182 gus->gf1.port, gus->gf1.irq, gus->gf1.dma1);
183
184 if (gus->gf1.dma2 >= 0)
185 sprintf(card->longname + strlen(card->longname),
186 "&%d", gus->gf1.dma2);
187
188 error = snd_card_register(card);
189 if (error < 0)
190 return error;
191
192 dev_set_drvdata(dev, card);
193 return 0;
194 }
195
196 static struct isa_driver snd_gusclassic_driver = {
197 .match = snd_gusclassic_match,
198 .probe = snd_gusclassic_probe,
199 #if 0 /* FIXME */
200 .suspend = snd_gusclassic_suspend,
201 #endif
202 .driver = {
203 .name = DEV_NAME
204 }
205 };
206
207 module_isa_driver(snd_gusclassic_driver, SNDRV_CARDS);
208
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