1 /* 2 * Generic driver for CS4231 chips 3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz> 4 * Originally the CS4232/CS4232A driver, modified for use on CS4231 by 5 * Tugrul Galatali <galatalt@stuy.edu> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 * 21 */ 22 23 #include <sound/driver.h> 24 #include <linux/init.h> 25 #include <linux/err.h> 26 #include <linux/platform_device.h> 27 #include <linux/time.h> 28 #include <linux/wait.h> 29 #include <linux/moduleparam.h> 30 #include <sound/core.h> 31 #include <sound/cs4231.h> 32 #include <sound/mpu401.h> 33 #include <sound/initval.h> 34 35 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); 36 MODULE_DESCRIPTION("Generic CS4231"); 37 MODULE_LICENSE("GPL"); 38 MODULE_SUPPORTED_DEVICE("{{Crystal Semiconductors,CS4231}}"); 39 40 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 41 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 42 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ 43 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ 44 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ 45 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */ 46 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 9,11,12,15 */ 47 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */ 48 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */ 49 50 module_param_array(index, int, NULL, 0444); 51 MODULE_PARM_DESC(index, "Index value for CS4231 soundcard."); 52 module_param_array(id, charp, NULL, 0444); 53 MODULE_PARM_DESC(id, "ID string for CS4231 soundcard."); 54 module_param_array(enable, bool, NULL, 0444); 55 MODULE_PARM_DESC(enable, "Enable CS4231 soundcard."); 56 module_param_array(port, long, NULL, 0444); 57 MODULE_PARM_DESC(port, "Port # for CS4231 driver."); 58 module_param_array(mpu_port, long, NULL, 0444); 59 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for CS4231 driver."); 60 module_param_array(irq, int, NULL, 0444); 61 MODULE_PARM_DESC(irq, "IRQ # for CS4231 driver."); 62 module_param_array(mpu_irq, int, NULL, 0444); 63 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for CS4231 driver."); 64 module_param_array(dma1, int, NULL, 0444); 65 MODULE_PARM_DESC(dma1, "DMA1 # for CS4231 driver."); 66 module_param_array(dma2, int, NULL, 0444); 67 MODULE_PARM_DESC(dma2, "DMA2 # for CS4231 driver."); 68 69 static struct platform_device *devices[SNDRV_CARDS]; 70 71 72 static int __init snd_cs4231_probe(struct platform_device *pdev) 73 { 74 int dev = pdev->id; 75 struct snd_card *card; 76 struct snd_pcm *pcm; 77 struct snd_cs4231 *chip; 78 int err; 79 80 if (port[dev] == SNDRV_AUTO_PORT) { 81 snd_printk(KERN_ERR "specify port\n"); 82 return -EINVAL; 83 } 84 if (irq[dev] == SNDRV_AUTO_IRQ) { 85 snd_printk(KERN_ERR "specify irq\n"); 86 return -EINVAL; 87 } 88 if (dma1[dev] == SNDRV_AUTO_DMA) { 89 snd_printk(KERN_ERR "specify dma1\n"); 90 return -EINVAL; 91 } 92 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); 93 if (card == NULL) 94 return -ENOMEM; 95 if ((err = snd_cs4231_create(card, port[dev], -1, 96 irq[dev], 97 dma1[dev], 98 dma2[dev], 99 CS4231_HW_DETECT, 100 0, &chip)) < 0) 101 goto _err; 102 card->private_data = chip; 103 104 if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0) 105 goto _err; 106 107 strcpy(card->driver, "CS4231"); 108 strcpy(card->shortname, pcm->name); 109 sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d", 110 pcm->name, chip->port, irq[dev], dma1[dev]); 111 if (dma2[dev] >= 0) 112 sprintf(card->longname + strlen(card->longname), "&%d", dma2[dev]); 113 114 if ((err = snd_cs4231_mixer(chip)) < 0) 115 goto _err; 116 if ((err = snd_cs4231_timer(chip, 0, NULL)) < 0) 117 goto _err; 118 119 if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) { 120 if (mpu_irq[dev] == SNDRV_AUTO_IRQ) 121 mpu_irq[dev] = -1; 122 if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232, 123 mpu_port[dev], 0, 124 mpu_irq[dev], 125 mpu_irq[dev] >= 0 ? SA_INTERRUPT : 0, 126 NULL) < 0) 127 printk(KERN_WARNING "cs4231: MPU401 not detected\n"); 128 } 129 130 snd_card_set_dev(card, &pdev->dev); 131 132 if ((err = snd_card_register(card)) < 0) 133 goto _err; 134 135 platform_set_drvdata(pdev, card); 136 return 0; 137 138 _err: 139 snd_card_free(card); 140 return err; 141 } 142 143 static int __devexit snd_cs4231_remove(struct platform_device *devptr) 144 { 145 snd_card_free(platform_get_drvdata(devptr)); 146 platform_set_drvdata(devptr, NULL); 147 return 0; 148 } 149 150 #ifdef CONFIG_PM 151 static int snd_cs4231_suspend(struct platform_device *dev, pm_message_t state) 152 { 153 struct snd_card *card; 154 struct snd_cs4231 *chip; 155 card = platform_get_drvdata(dev); 156 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 157 chip = card->private_data; 158 chip->suspend(chip); 159 return 0; 160 } 161 162 static int snd_cs4231_resume(struct platform_device *dev) 163 { 164 struct snd_card *card; 165 struct snd_cs4231 *chip; 166 card = platform_get_drvdata(dev); 167 chip = card->private_data; 168 chip->resume(chip); 169 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 170 return 0; 171 } 172 #endif 173 174 #define SND_CS4231_DRIVER "snd_cs4231" 175 176 static struct platform_driver snd_cs4231_driver = { 177 .probe = snd_cs4231_probe, 178 .remove = __devexit_p(snd_cs4231_remove), 179 #ifdef CONFIG_PM 180 .suspend = snd_cs4231_suspend, 181 .resume = snd_cs4231_resume, 182 #endif 183 .driver = { 184 .name = SND_CS4231_DRIVER 185 }, 186 }; 187 188 static void __init_or_module snd_cs4231_unregister_all(void) 189 { 190 int i; 191 192 for (i = 0; i < ARRAY_SIZE(devices); ++i) 193 platform_device_unregister(devices[i]); 194 platform_driver_unregister(&snd_cs4231_driver); 195 } 196 197 static int __init alsa_card_cs4231_init(void) 198 { 199 int i, cards, err; 200 201 err = platform_driver_register(&snd_cs4231_driver); 202 if (err < 0) 203 return err; 204 205 cards = 0; 206 for (i = 0; i < SNDRV_CARDS; i++) { 207 struct platform_device *device; 208 if (! enable[i]) 209 continue; 210 device = platform_device_register_simple(SND_CS4231_DRIVER, 211 i, NULL, 0); 212 if (IS_ERR(device)) { 213 err = PTR_ERR(device); 214 goto errout; 215 } 216 devices[i] = device; 217 cards++; 218 } 219 if (!cards) { 220 #ifdef MODULE 221 printk(KERN_ERR "CS4231 soundcard not found or device busy\n"); 222 #endif 223 err = -ENODEV; 224 goto errout; 225 } 226 return 0; 227 228 errout: 229 snd_cs4231_unregister_all(); 230 return err; 231 } 232 233 static void __exit alsa_card_cs4231_exit(void) 234 { 235 snd_cs4231_unregister_all(); 236 } 237 238 module_init(alsa_card_cs4231_init) 239 module_exit(alsa_card_cs4231_exit) 240