| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * AdLib FM card driver. |
| 4 | */ |
| 5 | |
| 6 | #include <linux/kernel.h> |
| 7 | #include <linux/module.h> |
| 8 | #include <linux/isa.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 DEV_NAME "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 bool 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_hw_array(port, long, ioport, NULL, 0444); |
| 32 | MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver."); |
| 33 | |
| 34 | static int snd_adlib_match(struct device *dev, unsigned int n) |
| 35 | { |
| 36 | if (!enable[n]) |
| 37 | return 0; |
| 38 | |
| 39 | if (port[n] == SNDRV_AUTO_PORT) { |
| 40 | dev_err(dev, "please specify port\n"); |
| 41 | return 0; |
| 42 | } |
| 43 | return 1; |
| 44 | } |
| 45 | |
| 46 | static void snd_adlib_free(struct snd_card *card) |
| 47 | { |
| 48 | release_and_free_resource(card->private_data); |
| 49 | } |
| 50 | |
| 51 | static int snd_adlib_probe(struct device *dev, unsigned int n) |
| 52 | { |
| 53 | struct snd_card *card; |
| 54 | struct snd_opl3 *opl3; |
| 55 | int error; |
| 56 | |
| 57 | error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card); |
| 58 | if (error < 0) { |
| 59 | dev_err(dev, "could not create card\n"); |
| 60 | return error; |
| 61 | } |
| 62 | |
| 63 | card->private_data = request_region(port[n], 4, CRD_NAME); |
| 64 | if (!card->private_data) { |
| 65 | dev_err(dev, "could not grab ports\n"); |
| 66 | error = -EBUSY; |
| 67 | goto out; |
| 68 | } |
| 69 | card->private_free = snd_adlib_free; |
| 70 | |
| 71 | strcpy(card->driver, DEV_NAME); |
| 72 | strcpy(card->shortname, CRD_NAME); |
| 73 | sprintf(card->longname, CRD_NAME " at %#lx", port[n]); |
| 74 | |
| 75 | error = snd_opl3_create(card, port[n], port[n] + 2, OPL3_HW_AUTO, 1, &opl3); |
| 76 | if (error < 0) { |
| 77 | dev_err(dev, "could not create OPL\n"); |
| 78 | goto out; |
| 79 | } |
| 80 | |
| 81 | error = snd_opl3_hwdep_new(opl3, 0, 0, NULL); |
| 82 | if (error < 0) { |
| 83 | dev_err(dev, "could not create FM\n"); |
| 84 | goto out; |
| 85 | } |
| 86 | |
| 87 | error = snd_card_register(card); |
| 88 | if (error < 0) { |
| 89 | dev_err(dev, "could not register card\n"); |
| 90 | goto out; |
| 91 | } |
| 92 | |
| 93 | dev_set_drvdata(dev, card); |
| 94 | return 0; |
| 95 | |
| 96 | out: snd_card_free(card); |
| 97 | return error; |
| 98 | } |
| 99 | |
| 100 | static int snd_adlib_remove(struct device *dev, unsigned int n) |
| 101 | { |
| 102 | snd_card_free(dev_get_drvdata(dev)); |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | static struct isa_driver snd_adlib_driver = { |
| 107 | .match = snd_adlib_match, |
| 108 | .probe = snd_adlib_probe, |
| 109 | .remove = snd_adlib_remove, |
| 110 | |
| 111 | .driver = { |
| 112 | .name = DEV_NAME |
| 113 | } |
| 114 | }; |
| 115 | |
| 116 | module_isa_driver(snd_adlib_driver, SNDRV_CARDS); |