gusclassic.c 6.0 KB

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