xref: /openbmc/linux/sound/isa/gus/gusclassic.c (revision 5b88da3c)
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 
snd_gusclassic_match(struct device * dev,unsigned int n)60 static int snd_gusclassic_match(struct device *dev, unsigned int n)
61 {
62 	return enable[n];
63 }
64 
snd_gusclassic_create(struct snd_card * card,struct device * dev,unsigned int n,struct snd_gus_card ** rgus)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 
snd_gusclassic_detect(struct snd_gus_card * gus)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 
snd_gusclassic_probe(struct device * dev,unsigned int n)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