1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Driver for Sound Core PDAudioCF soundcard 4 * 5 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz> 6 */ 7 8 #include <sound/core.h> 9 #include <linux/slab.h> 10 #include <linux/module.h> 11 #include <pcmcia/ciscode.h> 12 #include <pcmcia/cisreg.h> 13 #include "pdaudiocf.h" 14 #include <sound/initval.h> 15 #include <linux/init.h> 16 17 /* 18 */ 19 20 #define CARD_NAME "PDAudio-CF" 21 22 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 23 MODULE_DESCRIPTION("Sound Core " CARD_NAME); 24 MODULE_LICENSE("GPL"); 25 26 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 27 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 28 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */ 29 30 module_param_array(index, int, NULL, 0444); 31 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); 32 module_param_array(id, charp, NULL, 0444); 33 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); 34 module_param_array(enable, bool, NULL, 0444); 35 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); 36 37 /* 38 */ 39 40 static struct snd_card *card_list[SNDRV_CARDS]; 41 42 /* 43 * prototypes 44 */ 45 static int pdacf_config(struct pcmcia_device *link); 46 static void snd_pdacf_detach(struct pcmcia_device *p_dev); 47 48 static void pdacf_release(struct pcmcia_device *link) 49 { 50 free_irq(link->irq, link->priv); 51 pcmcia_disable_device(link); 52 } 53 54 /* 55 * destructor 56 */ 57 static int snd_pdacf_free(struct snd_pdacf *pdacf) 58 { 59 struct pcmcia_device *link = pdacf->p_dev; 60 61 pdacf_release(link); 62 63 card_list[pdacf->index] = NULL; 64 pdacf->card = NULL; 65 66 kfree(pdacf); 67 return 0; 68 } 69 70 static int snd_pdacf_dev_free(struct snd_device *device) 71 { 72 struct snd_pdacf *chip = device->device_data; 73 return snd_pdacf_free(chip); 74 } 75 76 /* 77 * snd_pdacf_attach - attach callback for cs 78 */ 79 static int snd_pdacf_probe(struct pcmcia_device *link) 80 { 81 int i, err; 82 struct snd_pdacf *pdacf; 83 struct snd_card *card; 84 static const struct snd_device_ops ops = { 85 .dev_free = snd_pdacf_dev_free, 86 }; 87 88 /* find an empty slot from the card list */ 89 for (i = 0; i < SNDRV_CARDS; i++) { 90 if (! card_list[i]) 91 break; 92 } 93 if (i >= SNDRV_CARDS) { 94 dev_err(&link->dev, "pdacf: too many cards found\n"); 95 return -EINVAL; 96 } 97 if (! enable[i]) 98 return -ENODEV; /* disabled explicitly */ 99 100 /* ok, create a card instance */ 101 err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE, 102 0, &card); 103 if (err < 0) { 104 dev_err(&link->dev, "pdacf: cannot create a card instance\n"); 105 return err; 106 } 107 108 pdacf = snd_pdacf_create(card); 109 if (!pdacf) { 110 snd_card_free(card); 111 return -ENOMEM; 112 } 113 114 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops); 115 if (err < 0) { 116 kfree(pdacf); 117 snd_card_free(card); 118 return err; 119 } 120 121 pdacf->index = i; 122 card_list[i] = card; 123 124 pdacf->p_dev = link; 125 link->priv = pdacf; 126 127 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; 128 link->resource[0]->end = 16; 129 130 link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; 131 link->config_index = 1; 132 link->config_regs = PRESENT_OPTION; 133 134 return pdacf_config(link); 135 } 136 137 138 /** 139 * snd_pdacf_assign_resources - initialize the hardware and card instance. 140 * @pdacf: context 141 * @port: i/o port for the card 142 * @irq: irq number for the card 143 * 144 * this function assigns the specified port and irq, boot the card, 145 * create pcm and control instances, and initialize the rest hardware. 146 * 147 * returns 0 if successful, or a negative error code. 148 */ 149 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq) 150 { 151 int err; 152 struct snd_card *card = pdacf->card; 153 154 dev_dbg(card->dev, "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq); 155 pdacf->port = port; 156 pdacf->irq = irq; 157 pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED; 158 159 err = snd_pdacf_ak4117_create(pdacf); 160 if (err < 0) 161 return err; 162 163 strcpy(card->driver, "PDAudio-CF"); 164 sprintf(card->shortname, "Core Sound %s", card->driver); 165 sprintf(card->longname, "%s at 0x%x, irq %i", 166 card->shortname, port, irq); 167 168 err = snd_pdacf_pcm_new(pdacf); 169 if (err < 0) 170 return err; 171 172 err = snd_card_register(card); 173 if (err < 0) 174 return err; 175 176 return 0; 177 } 178 179 180 /* 181 * snd_pdacf_detach - detach callback for cs 182 */ 183 static void snd_pdacf_detach(struct pcmcia_device *link) 184 { 185 struct snd_pdacf *chip = link->priv; 186 187 if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED) 188 snd_pdacf_powerdown(chip); 189 chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */ 190 snd_card_disconnect(chip->card); 191 snd_card_free_when_closed(chip->card); 192 } 193 194 /* 195 * configuration callback 196 */ 197 198 static int pdacf_config(struct pcmcia_device *link) 199 { 200 struct snd_pdacf *pdacf = link->priv; 201 int ret; 202 203 link->config_index = 0x5; 204 link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; 205 206 ret = pcmcia_request_io(link); 207 if (ret) 208 goto failed_preirq; 209 210 ret = request_threaded_irq(link->irq, pdacf_interrupt, 211 pdacf_threaded_irq, 212 IRQF_SHARED, link->devname, link->priv); 213 if (ret) 214 goto failed_preirq; 215 216 ret = pcmcia_enable_device(link); 217 if (ret) 218 goto failed; 219 220 if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start, 221 link->irq) < 0) 222 goto failed; 223 224 pdacf->card->sync_irq = link->irq; 225 return 0; 226 227 failed: 228 free_irq(link->irq, link->priv); 229 failed_preirq: 230 pcmcia_disable_device(link); 231 return -ENODEV; 232 } 233 234 #ifdef CONFIG_PM 235 236 static int pdacf_suspend(struct pcmcia_device *link) 237 { 238 struct snd_pdacf *chip = link->priv; 239 240 if (chip) 241 snd_pdacf_suspend(chip); 242 243 return 0; 244 } 245 246 static int pdacf_resume(struct pcmcia_device *link) 247 { 248 struct snd_pdacf *chip = link->priv; 249 250 if (pcmcia_dev_present(link)) { 251 if (chip) 252 snd_pdacf_resume(chip); 253 } 254 255 return 0; 256 } 257 258 #endif 259 260 /* 261 * Module entry points 262 */ 263 static const struct pcmcia_device_id snd_pdacf_ids[] = { 264 /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */ 265 PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49), 266 PCMCIA_DEVICE_NULL 267 }; 268 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids); 269 270 static struct pcmcia_driver pdacf_cs_driver = { 271 .owner = THIS_MODULE, 272 .name = "snd-pdaudiocf", 273 .probe = snd_pdacf_probe, 274 .remove = snd_pdacf_detach, 275 .id_table = snd_pdacf_ids, 276 #ifdef CONFIG_PM 277 .suspend = pdacf_suspend, 278 .resume = pdacf_resume, 279 #endif 280 }; 281 module_pcmcia_driver(pdacf_cs_driver); 282