Rene Herman | cf40a31 | 2006-03-28 12:38:20 +0200 | [diff] [blame] | 1 | /* |
| 2 | * AdLib FM card driver. |
| 3 | */ |
| 4 | |
| 5 | #include <sound/driver.h> |
| 6 | #include <linux/kernel.h> |
| 7 | #include <linux/module.h> |
| 8 | #include <linux/platform_device.h> |
| 9 | #include <sound/core.h> |
| 10 | #include <sound/initval.h> |
| 11 | #include <sound/opl3.h> |
| 12 | |
| 13 | #define CRD_NAME "AdLib FM" |
| 14 | #define DRV_NAME "snd_adlib" |
| 15 | |
| 16 | MODULE_DESCRIPTION(CRD_NAME); |
| 17 | MODULE_AUTHOR("Rene Herman"); |
| 18 | MODULE_LICENSE("GPL"); |
| 19 | |
| 20 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
| 21 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; |
| 22 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; |
| 23 | static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; |
| 24 | |
| 25 | module_param_array(index, int, NULL, 0444); |
| 26 | MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard."); |
| 27 | module_param_array(id, charp, NULL, 0444); |
| 28 | MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard."); |
| 29 | module_param_array(enable, bool, NULL, 0444); |
| 30 | MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard."); |
| 31 | module_param_array(port, long, NULL, 0444); |
| 32 | MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver."); |
| 33 | |
| 34 | static struct platform_device *devices[SNDRV_CARDS]; |
| 35 | |
| 36 | static void snd_adlib_free(struct snd_card *card) |
| 37 | { |
| 38 | release_and_free_resource(card->private_data); |
| 39 | } |
| 40 | |
| 41 | static int __devinit snd_adlib_probe(struct platform_device *device) |
| 42 | { |
| 43 | struct snd_card *card; |
| 44 | struct snd_opl3 *opl3; |
| 45 | |
Rene Herman | dcccdd9 | 2006-04-11 14:09:37 +0200 | [diff] [blame] | 46 | int error, i = device->id; |
Rene Herman | cf40a31 | 2006-03-28 12:38:20 +0200 | [diff] [blame] | 47 | |
| 48 | if (port[i] == SNDRV_AUTO_PORT) { |
| 49 | snd_printk(KERN_ERR DRV_NAME ": please specify port\n"); |
| 50 | error = -EINVAL; |
| 51 | goto out0; |
| 52 | } |
| 53 | |
| 54 | card = snd_card_new(index[i], id[i], THIS_MODULE, 0); |
| 55 | if (!card) { |
| 56 | snd_printk(KERN_ERR DRV_NAME ": could not create card\n"); |
| 57 | error = -EINVAL; |
| 58 | goto out0; |
| 59 | } |
| 60 | |
| 61 | card->private_data = request_region(port[i], 4, CRD_NAME); |
| 62 | if (!card->private_data) { |
| 63 | snd_printk(KERN_ERR DRV_NAME ": could not grab ports\n"); |
| 64 | error = -EBUSY; |
| 65 | goto out1; |
| 66 | } |
| 67 | card->private_free = snd_adlib_free; |
| 68 | |
| 69 | error = snd_opl3_create(card, port[i], port[i] + 2, OPL3_HW_AUTO, 1, &opl3); |
| 70 | if (error < 0) { |
| 71 | snd_printk(KERN_ERR DRV_NAME ": could not create OPL\n"); |
| 72 | goto out1; |
| 73 | } |
| 74 | |
| 75 | error = snd_opl3_hwdep_new(opl3, 0, 0, NULL); |
| 76 | if (error < 0) { |
| 77 | snd_printk(KERN_ERR DRV_NAME ": could not create FM\n"); |
| 78 | goto out1; |
| 79 | } |
| 80 | |
| 81 | strcpy(card->driver, DRV_NAME); |
| 82 | strcpy(card->shortname, CRD_NAME); |
| 83 | sprintf(card->longname, CRD_NAME " at %#lx", port[i]); |
| 84 | |
| 85 | snd_card_set_dev(card, &device->dev); |
| 86 | |
| 87 | error = snd_card_register(card); |
| 88 | if (error < 0) { |
| 89 | snd_printk(KERN_ERR DRV_NAME ": could not register card\n"); |
| 90 | goto out1; |
| 91 | } |
| 92 | |
| 93 | platform_set_drvdata(device, card); |
| 94 | return 0; |
| 95 | |
| 96 | out1: snd_card_free(card); |
Rene Herman | dcccdd9 | 2006-04-11 14:09:37 +0200 | [diff] [blame] | 97 | out0: return error; |
Rene Herman | cf40a31 | 2006-03-28 12:38:20 +0200 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | static int __devexit snd_adlib_remove(struct platform_device *device) |
| 101 | { |
| 102 | snd_card_free(platform_get_drvdata(device)); |
| 103 | platform_set_drvdata(device, NULL); |
| 104 | return 0; |
| 105 | } |
| 106 | |
| 107 | static struct platform_driver snd_adlib_driver = { |
| 108 | .probe = snd_adlib_probe, |
| 109 | .remove = __devexit_p(snd_adlib_remove), |
| 110 | |
| 111 | .driver = { |
| 112 | .name = DRV_NAME |
| 113 | } |
| 114 | }; |
| 115 | |
| 116 | static int __init alsa_card_adlib_init(void) |
| 117 | { |
| 118 | int i, cards; |
| 119 | |
| 120 | if (platform_driver_register(&snd_adlib_driver) < 0) { |
| 121 | snd_printk(KERN_ERR DRV_NAME ": could not register driver\n"); |
| 122 | return -ENODEV; |
| 123 | } |
| 124 | |
| 125 | for (cards = 0, i = 0; i < SNDRV_CARDS; i++) { |
| 126 | struct platform_device *device; |
| 127 | |
| 128 | if (!enable[i]) |
| 129 | continue; |
| 130 | |
| 131 | device = platform_device_register_simple(DRV_NAME, i, NULL, 0); |
| 132 | if (IS_ERR(device)) |
| 133 | continue; |
| 134 | |
Rene Herman | dcccdd9 | 2006-04-11 14:09:37 +0200 | [diff] [blame] | 135 | if (!platform_get_drvdata(device)) { |
| 136 | platform_device_unregister(device); |
| 137 | continue; |
| 138 | } |
| 139 | |
Rene Herman | cf40a31 | 2006-03-28 12:38:20 +0200 | [diff] [blame] | 140 | devices[i] = device; |
| 141 | cards++; |
| 142 | } |
| 143 | |
| 144 | if (!cards) { |
| 145 | #ifdef MODULE |
| 146 | printk(KERN_ERR CRD_NAME " soundcard not found or device busy\n"); |
| 147 | #endif |
| 148 | platform_driver_unregister(&snd_adlib_driver); |
| 149 | return -ENODEV; |
| 150 | } |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static void __exit alsa_card_adlib_exit(void) |
| 155 | { |
| 156 | int i; |
| 157 | |
| 158 | for (i = 0; i < SNDRV_CARDS; i++) |
| 159 | platform_device_unregister(devices[i]); |
| 160 | platform_driver_unregister(&snd_adlib_driver); |
| 161 | } |
| 162 | |
| 163 | module_init(alsa_card_adlib_init); |
| 164 | module_exit(alsa_card_adlib_exit); |