1 /* 2 * Driver for Gravis UltraSound Classic soundcard 3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz> 4 * 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 */ 21 22 #include <sound/driver.h> 23 #include <linux/init.h> 24 #include <linux/err.h> 25 #include <linux/platform_device.h> 26 #include <linux/delay.h> 27 #include <linux/time.h> 28 #include <linux/moduleparam.h> 29 #include <asm/dma.h> 30 #include <sound/core.h> 31 #include <sound/gus.h> 32 #define SNDRV_LEGACY_FIND_FREE_IRQ 33 #define SNDRV_LEGACY_FIND_FREE_DMA 34 #include <sound/initval.h> 35 36 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); 37 MODULE_DESCRIPTION("Gravis UltraSound Classic"); 38 MODULE_LICENSE("GPL"); 39 MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}"); 40 41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 43 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ 44 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x230,0x240,0x250,0x260 */ 45 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 3,5,9,11,12,15 */ 46 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */ 47 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */ 48 static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29}; 49 /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */ 50 static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24}; 51 static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; 52 53 module_param_array(index, int, NULL, 0444); 54 MODULE_PARM_DESC(index, "Index value for GUS Classic soundcard."); 55 module_param_array(id, charp, NULL, 0444); 56 MODULE_PARM_DESC(id, "ID string for GUS Classic soundcard."); 57 module_param_array(enable, bool, NULL, 0444); 58 MODULE_PARM_DESC(enable, "Enable GUS Classic soundcard."); 59 module_param_array(port, long, NULL, 0444); 60 MODULE_PARM_DESC(port, "Port # for GUS Classic driver."); 61 module_param_array(irq, int, NULL, 0444); 62 MODULE_PARM_DESC(irq, "IRQ # for GUS Classic driver."); 63 module_param_array(dma1, int, NULL, 0444); 64 MODULE_PARM_DESC(dma1, "DMA1 # for GUS Classic driver."); 65 module_param_array(dma2, int, NULL, 0444); 66 MODULE_PARM_DESC(dma2, "DMA2 # for GUS Classic driver."); 67 module_param_array(joystick_dac, int, NULL, 0444); 68 MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS Classic driver."); 69 module_param_array(channels, int, NULL, 0444); 70 MODULE_PARM_DESC(channels, "GF1 channels for GUS Classic driver."); 71 module_param_array(pcm_channels, int, NULL, 0444); 72 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Classic driver."); 73 74 static struct platform_device *devices[SNDRV_CARDS]; 75 76 77 #define PFX "gusclassic: " 78 79 static int __init snd_gusclassic_detect(struct snd_gus_card * gus) 80 { 81 unsigned char d; 82 83 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */ 84 if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) { 85 snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d); 86 return -ENODEV; 87 } 88 udelay(160); 89 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */ 90 udelay(160); 91 if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) { 92 snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d); 93 return -ENODEV; 94 } 95 return 0; 96 } 97 98 static void __init snd_gusclassic_init(int dev, struct snd_gus_card * gus) 99 { 100 gus->equal_irq = 0; 101 gus->codec_flag = 0; 102 gus->max_flag = 0; 103 gus->joystick_dac = joystick_dac[dev]; 104 } 105 106 static int __init snd_gusclassic_probe(struct platform_device *pdev) 107 { 108 int dev = pdev->id; 109 static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1}; 110 static int possible_dmas[] = {5, 6, 7, 1, 3, -1}; 111 int xirq, xdma1, xdma2; 112 struct snd_card *card; 113 struct snd_gus_card *gus = NULL; 114 int err; 115 116 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); 117 if (card == NULL) 118 return -ENOMEM; 119 if (pcm_channels[dev] < 2) 120 pcm_channels[dev] = 2; 121 122 xirq = irq[dev]; 123 if (xirq == SNDRV_AUTO_IRQ) { 124 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) { 125 snd_printk(KERN_ERR PFX "unable to find a free IRQ\n"); 126 err = -EBUSY; 127 goto _err; 128 } 129 } 130 xdma1 = dma1[dev]; 131 if (xdma1 == SNDRV_AUTO_DMA) { 132 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) { 133 snd_printk(KERN_ERR PFX "unable to find a free DMA1\n"); 134 err = -EBUSY; 135 goto _err; 136 } 137 } 138 xdma2 = dma2[dev]; 139 if (xdma2 == SNDRV_AUTO_DMA) { 140 if ((xdma2 = snd_legacy_find_free_dma(possible_dmas)) < 0) { 141 snd_printk(KERN_ERR PFX "unable to find a free DMA2\n"); 142 err = -EBUSY; 143 goto _err; 144 } 145 } 146 147 if (port[dev] != SNDRV_AUTO_PORT) { 148 err = snd_gus_create(card, 149 port[dev], 150 xirq, xdma1, xdma2, 151 0, channels[dev], pcm_channels[dev], 152 0, &gus); 153 } else { 154 /* auto-probe legacy ports */ 155 static unsigned long possible_ports[] = { 156 0x220, 0x230, 0x240, 0x250, 0x260, 157 }; 158 int i; 159 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) { 160 err = snd_gus_create(card, 161 possible_ports[i], 162 xirq, xdma1, xdma2, 163 0, channels[dev], pcm_channels[dev], 164 0, &gus); 165 if (err >= 0) { 166 port[dev] = possible_ports[i]; 167 break; 168 } 169 } 170 } 171 if (err < 0) 172 goto _err; 173 174 if ((err = snd_gusclassic_detect(gus)) < 0) 175 goto _err; 176 177 snd_gusclassic_init(dev, gus); 178 if ((err = snd_gus_initialize(gus)) < 0) 179 goto _err; 180 181 if (gus->max_flag || gus->ess_flag) { 182 snd_printk(KERN_ERR PFX "GUS Classic or ACE soundcard was not detected at 0x%lx\n", gus->gf1.port); 183 err = -ENODEV; 184 goto _err; 185 } 186 187 if ((err = snd_gf1_new_mixer(gus)) < 0) 188 goto _err; 189 190 if ((err = snd_gf1_pcm_new(gus, 0, 0, NULL)) < 0) 191 goto _err; 192 193 if (!gus->ace_flag) { 194 if ((err = snd_gf1_rawmidi_new(gus, 0, NULL)) < 0) 195 goto _err; 196 } 197 sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %d, dma %d", gus->gf1.port, xirq, xdma1); 198 if (xdma2 >= 0) 199 sprintf(card->longname + strlen(card->longname), "&%d", xdma2); 200 201 snd_card_set_dev(card, &pdev->dev); 202 203 if ((err = snd_card_register(card)) < 0) 204 goto _err; 205 206 platform_set_drvdata(pdev, card); 207 return 0; 208 209 _err: 210 snd_card_free(card); 211 return err; 212 } 213 214 static int snd_gusclassic_remove(struct platform_device *devptr) 215 { 216 snd_card_free(platform_get_drvdata(devptr)); 217 platform_set_drvdata(devptr, NULL); 218 return 0; 219 } 220 221 #define GUSCLASSIC_DRIVER "snd_gusclassic" 222 223 static struct platform_driver snd_gusclassic_driver = { 224 .probe = snd_gusclassic_probe, 225 .remove = snd_gusclassic_remove, 226 /* FIXME: suspend/resume */ 227 .driver = { 228 .name = GUSCLASSIC_DRIVER 229 }, 230 }; 231 232 static void __init_or_module snd_gusclassic_unregister_all(void) 233 { 234 int i; 235 236 for (i = 0; i < ARRAY_SIZE(devices); ++i) 237 platform_device_unregister(devices[i]); 238 platform_driver_unregister(&snd_gusclassic_driver); 239 } 240 241 static int __init alsa_card_gusclassic_init(void) 242 { 243 int i, cards, err; 244 245 err = platform_driver_register(&snd_gusclassic_driver); 246 if (err < 0) 247 return err; 248 249 cards = 0; 250 for (i = 0; i < SNDRV_CARDS; i++) { 251 struct platform_device *device; 252 if (! enable[i]) 253 continue; 254 device = platform_device_register_simple(GUSCLASSIC_DRIVER, 255 i, NULL, 0); 256 if (IS_ERR(device)) 257 continue; 258 if (!platform_get_drvdata(device)) { 259 platform_device_unregister(device); 260 continue; 261 } 262 devices[i] = device; 263 cards++; 264 } 265 if (!cards) { 266 #ifdef MODULE 267 printk(KERN_ERR "GUS Classic soundcard not found or device busy\n"); 268 #endif 269 snd_gusclassic_unregister_all(); 270 return -ENODEV; 271 } 272 return 0; 273 } 274 275 static void __exit alsa_card_gusclassic_exit(void) 276 { 277 snd_gusclassic_unregister_all(); 278 } 279 280 module_init(alsa_card_gusclassic_init) 281 module_exit(alsa_card_gusclassic_exit) 282