pdaudiocf.c (6627B)
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 22MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 23MODULE_DESCRIPTION("Sound Core " CARD_NAME); 24MODULE_LICENSE("GPL"); 25 26static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 27static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 28static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */ 29 30module_param_array(index, int, NULL, 0444); 31MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); 32module_param_array(id, charp, NULL, 0444); 33MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); 34module_param_array(enable, bool, NULL, 0444); 35MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); 36 37/* 38 */ 39 40static struct snd_card *card_list[SNDRV_CARDS]; 41 42/* 43 * prototypes 44 */ 45static int pdacf_config(struct pcmcia_device *link); 46static void snd_pdacf_detach(struct pcmcia_device *p_dev); 47 48static 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 */ 57static 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 70static 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 */ 79static 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 snd_printdd(KERN_DEBUG "pdacf_attach called\n"); 89 /* find an empty slot from the card list */ 90 for (i = 0; i < SNDRV_CARDS; i++) { 91 if (! card_list[i]) 92 break; 93 } 94 if (i >= SNDRV_CARDS) { 95 snd_printk(KERN_ERR "pdacf: too many cards found\n"); 96 return -EINVAL; 97 } 98 if (! enable[i]) 99 return -ENODEV; /* disabled explicitly */ 100 101 /* ok, create a card instance */ 102 err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE, 103 0, &card); 104 if (err < 0) { 105 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n"); 106 return err; 107 } 108 109 pdacf = snd_pdacf_create(card); 110 if (!pdacf) { 111 snd_card_free(card); 112 return -ENOMEM; 113 } 114 115 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops); 116 if (err < 0) { 117 kfree(pdacf); 118 snd_card_free(card); 119 return err; 120 } 121 122 pdacf->index = i; 123 card_list[i] = card; 124 125 pdacf->p_dev = link; 126 link->priv = pdacf; 127 128 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; 129 link->resource[0]->end = 16; 130 131 link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; 132 link->config_index = 1; 133 link->config_regs = PRESENT_OPTION; 134 135 return pdacf_config(link); 136} 137 138 139/** 140 * snd_pdacf_assign_resources - initialize the hardware and card instance. 141 * @pdacf: context 142 * @port: i/o port for the card 143 * @irq: irq number for the card 144 * 145 * this function assigns the specified port and irq, boot the card, 146 * create pcm and control instances, and initialize the rest hardware. 147 * 148 * returns 0 if successful, or a negative error code. 149 */ 150static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq) 151{ 152 int err; 153 struct snd_card *card = pdacf->card; 154 155 snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq); 156 pdacf->port = port; 157 pdacf->irq = irq; 158 pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED; 159 160 err = snd_pdacf_ak4117_create(pdacf); 161 if (err < 0) 162 return err; 163 164 strcpy(card->driver, "PDAudio-CF"); 165 sprintf(card->shortname, "Core Sound %s", card->driver); 166 sprintf(card->longname, "%s at 0x%x, irq %i", 167 card->shortname, port, irq); 168 169 err = snd_pdacf_pcm_new(pdacf); 170 if (err < 0) 171 return err; 172 173 err = snd_card_register(card); 174 if (err < 0) 175 return err; 176 177 return 0; 178} 179 180 181/* 182 * snd_pdacf_detach - detach callback for cs 183 */ 184static void snd_pdacf_detach(struct pcmcia_device *link) 185{ 186 struct snd_pdacf *chip = link->priv; 187 188 snd_printdd(KERN_DEBUG "pdacf_detach called\n"); 189 190 if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED) 191 snd_pdacf_powerdown(chip); 192 chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */ 193 snd_card_disconnect(chip->card); 194 snd_card_free_when_closed(chip->card); 195} 196 197/* 198 * configuration callback 199 */ 200 201static int pdacf_config(struct pcmcia_device *link) 202{ 203 struct snd_pdacf *pdacf = link->priv; 204 int ret; 205 206 snd_printdd(KERN_DEBUG "pdacf_config called\n"); 207 link->config_index = 0x5; 208 link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ; 209 210 ret = pcmcia_request_io(link); 211 if (ret) 212 goto failed_preirq; 213 214 ret = request_threaded_irq(link->irq, pdacf_interrupt, 215 pdacf_threaded_irq, 216 IRQF_SHARED, link->devname, link->priv); 217 if (ret) 218 goto failed_preirq; 219 220 ret = pcmcia_enable_device(link); 221 if (ret) 222 goto failed; 223 224 if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start, 225 link->irq) < 0) 226 goto failed; 227 228 pdacf->card->sync_irq = link->irq; 229 return 0; 230 231 failed: 232 free_irq(link->irq, link->priv); 233failed_preirq: 234 pcmcia_disable_device(link); 235 return -ENODEV; 236} 237 238#ifdef CONFIG_PM 239 240static int pdacf_suspend(struct pcmcia_device *link) 241{ 242 struct snd_pdacf *chip = link->priv; 243 244 snd_printdd(KERN_DEBUG "SUSPEND\n"); 245 if (chip) { 246 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n"); 247 snd_pdacf_suspend(chip); 248 } 249 250 return 0; 251} 252 253static int pdacf_resume(struct pcmcia_device *link) 254{ 255 struct snd_pdacf *chip = link->priv; 256 257 snd_printdd(KERN_DEBUG "RESUME\n"); 258 if (pcmcia_dev_present(link)) { 259 if (chip) { 260 snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n"); 261 snd_pdacf_resume(chip); 262 } 263 } 264 snd_printdd(KERN_DEBUG "resume done!\n"); 265 266 return 0; 267} 268 269#endif 270 271/* 272 * Module entry points 273 */ 274static const struct pcmcia_device_id snd_pdacf_ids[] = { 275 /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */ 276 PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49), 277 PCMCIA_DEVICE_NULL 278}; 279MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids); 280 281static struct pcmcia_driver pdacf_cs_driver = { 282 .owner = THIS_MODULE, 283 .name = "snd-pdaudiocf", 284 .probe = snd_pdacf_probe, 285 .remove = snd_pdacf_detach, 286 .id_table = snd_pdacf_ids, 287#ifdef CONFIG_PM 288 .suspend = pdacf_suspend, 289 .resume = pdacf_resume, 290#endif 291}; 292module_pcmcia_driver(pdacf_cs_driver);