1 /* 2 * Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha) 3 * Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>, 4 * Jaroslav Kysela <perex@suse.cz> 5 * Based on card-4232.c by Jaroslav Kysela <perex@suse.cz> 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 #include <sound/driver.h> 25 #include <linux/init.h> 26 #include <linux/err.h> 27 #include <linux/platform_device.h> 28 #include <linux/time.h> 29 #include <linux/wait.h> 30 #include <linux/moduleparam.h> 31 #include <sound/core.h> 32 #include <sound/ad1848.h> 33 #include <sound/initval.h> 34 35 MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@suse.cz>"); 36 MODULE_DESCRIPTION("AD1848/AD1847/CS4248"); 37 MODULE_LICENSE("GPL"); 38 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848}," 39 "{Analog Devices,AD1847}," 40 "{Crystal Semiconductors,CS4248}}"); 41 42 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 43 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 44 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ 45 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ 46 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */ 47 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */ 48 static int thinkpad[SNDRV_CARDS]; /* Thinkpad special case */ 49 50 module_param_array(index, int, NULL, 0444); 51 MODULE_PARM_DESC(index, "Index value for AD1848 soundcard."); 52 module_param_array(id, charp, NULL, 0444); 53 MODULE_PARM_DESC(id, "ID string for AD1848 soundcard."); 54 module_param_array(enable, bool, NULL, 0444); 55 MODULE_PARM_DESC(enable, "Enable AD1848 soundcard."); 56 module_param_array(port, long, NULL, 0444); 57 MODULE_PARM_DESC(port, "Port # for AD1848 driver."); 58 module_param_array(irq, int, NULL, 0444); 59 MODULE_PARM_DESC(irq, "IRQ # for AD1848 driver."); 60 module_param_array(dma1, int, NULL, 0444); 61 MODULE_PARM_DESC(dma1, "DMA1 # for AD1848 driver."); 62 module_param_array(thinkpad, bool, NULL, 0444); 63 MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series."); 64 65 static struct platform_device *devices[SNDRV_CARDS]; 66 67 68 static int __init snd_ad1848_probe(struct platform_device *pdev) 69 { 70 int dev = pdev->id; 71 struct snd_card *card; 72 struct snd_ad1848 *chip; 73 struct snd_pcm *pcm; 74 int err; 75 76 if (port[dev] == SNDRV_AUTO_PORT) { 77 snd_printk(KERN_ERR "ad1848: specify port\n"); 78 return -EINVAL; 79 } 80 if (irq[dev] == SNDRV_AUTO_IRQ) { 81 snd_printk(KERN_ERR "ad1848: specify irq\n"); 82 return -EINVAL; 83 } 84 if (dma1[dev] == SNDRV_AUTO_DMA) { 85 snd_printk(KERN_ERR "ad1848: specify dma1\n"); 86 return -EINVAL; 87 } 88 89 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); 90 if (card == NULL) 91 return -ENOMEM; 92 93 if ((err = snd_ad1848_create(card, port[dev], 94 irq[dev], 95 dma1[dev], 96 thinkpad[dev] ? AD1848_HW_THINKPAD : AD1848_HW_DETECT, 97 &chip)) < 0) 98 goto _err; 99 card->private_data = chip; 100 101 if ((err = snd_ad1848_pcm(chip, 0, &pcm)) < 0) 102 goto _err; 103 104 if ((err = snd_ad1848_mixer(chip)) < 0) 105 goto _err; 106 107 strcpy(card->driver, "AD1848"); 108 strcpy(card->shortname, pcm->name); 109 110 sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d", 111 pcm->name, chip->port, irq[dev], dma1[dev]); 112 113 if (thinkpad[dev]) 114 strcat(card->longname, " [Thinkpad]"); 115 116 snd_card_set_dev(card, &pdev->dev); 117 118 if ((err = snd_card_register(card)) < 0) 119 goto _err; 120 121 platform_set_drvdata(pdev, card); 122 return 0; 123 124 _err: 125 snd_card_free(card); 126 return err; 127 } 128 129 static int __devexit snd_ad1848_remove(struct platform_device *devptr) 130 { 131 snd_card_free(platform_get_drvdata(devptr)); 132 platform_set_drvdata(devptr, NULL); 133 return 0; 134 } 135 136 #ifdef CONFIG_PM 137 static int snd_ad1848_suspend(struct platform_device *pdev, pm_message_t state) 138 { 139 struct snd_card *card = platform_get_drvdata(pdev); 140 struct snd_ad1848 *chip = card->private_data; 141 142 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 143 chip->suspend(chip); 144 return 0; 145 } 146 147 static int snd_ad1848_resume(struct platform_device *pdev) 148 { 149 struct snd_card *card = platform_get_drvdata(pdev); 150 struct snd_ad1848 *chip = card->private_data; 151 152 chip->resume(chip); 153 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 154 return 0; 155 } 156 #endif 157 158 #define SND_AD1848_DRIVER "snd_ad1848" 159 160 static struct platform_driver snd_ad1848_driver = { 161 .probe = snd_ad1848_probe, 162 .remove = __devexit_p(snd_ad1848_remove), 163 #ifdef CONFIG_PM 164 .suspend = snd_ad1848_suspend, 165 .resume = snd_ad1848_resume, 166 #endif 167 .driver = { 168 .name = SND_AD1848_DRIVER 169 }, 170 }; 171 172 static void __init_or_module snd_ad1848_unregister_all(void) 173 { 174 int i; 175 176 for (i = 0; i < ARRAY_SIZE(devices); ++i) 177 platform_device_unregister(devices[i]); 178 platform_driver_unregister(&snd_ad1848_driver); 179 } 180 181 static int __init alsa_card_ad1848_init(void) 182 { 183 int i, cards, err; 184 185 err = platform_driver_register(&snd_ad1848_driver); 186 if (err < 0) 187 return err; 188 189 cards = 0; 190 for (i = 0; i < SNDRV_CARDS; i++) { 191 struct platform_device *device; 192 if (! enable[i]) 193 continue; 194 device = platform_device_register_simple(SND_AD1848_DRIVER, 195 i, NULL, 0); 196 if (IS_ERR(device)) { 197 err = PTR_ERR(device); 198 goto errout; 199 } 200 devices[i] = device; 201 cards++; 202 } 203 if (!cards) { 204 #ifdef MODULE 205 printk(KERN_ERR "AD1848 soundcard not found or device busy\n"); 206 #endif 207 err = -ENODEV; 208 goto errout; 209 } 210 return 0; 211 212 errout: 213 snd_ad1848_unregister_all(); 214 return err; 215 } 216 217 static void __exit alsa_card_ad1848_exit(void) 218 { 219 snd_ad1848_unregister_all(); 220 } 221 222 module_init(alsa_card_ad1848_init) 223 module_exit(alsa_card_ad1848_exit) 224