LXR linux/sound/isa/ad1848/ad1848.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
   4 *  Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
   5 *                   Jaroslav Kysela <perex@perex.cz>
   6 *  Based on card-4232.c by Jaroslav Kysela <perex@perex.cz>
   7 */
   8
   9#include <linux/init.h>
  10#include <linux/err.h>
  11#include <linux/isa.h>
  12#include <linux/time.h>
  13#include <linux/wait.h>
  14#include <linux/module.h>
  15#include <sound/core.h>
  16#include <sound/wss.h>
  17#include <sound/initval.h>
  18
  19#define CRD_NAME "Generic AD1848/AD1847/CS4248"
  20#define DEV_NAME "ad1848"
  21
  22MODULE_DESCRIPTION(CRD_NAME);
  23MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
  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; /* Enable this card */
  29static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
  30static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
  31static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
  32static bool thinkpad[SNDRV_CARDS];                      /* Thinkpad special case */
  33
  34module_param_array(index, int, NULL, 0444);
  35MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
  36module_param_array(id, charp, NULL, 0444);
  37MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
  38module_param_array(enable, bool, NULL, 0444);
  39MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
  40module_param_hw_array(port, long, ioport, NULL, 0444);
  41MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
  42module_param_hw_array(irq, int, irq, NULL, 0444);
  43MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
  44module_param_hw_array(dma1, int, dma, NULL, 0444);
  45MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
  46module_param_array(thinkpad, bool, NULL, 0444);
  47MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
  48
  49static int snd_ad1848_match(struct device *dev, unsigned int n)
  50{
  51        if (!enable[n])
  52                return 0;
  53
  54        if (port[n] == SNDRV_AUTO_PORT) {
  55                dev_err(dev, "please specify port\n");
  56                return 0;
  57        }
  58        if (irq[n] == SNDRV_AUTO_IRQ) {
  59                dev_err(dev, "please specify irq\n");
  60                return 0;       
  61        }
  62        if (dma1[n] == SNDRV_AUTO_DMA) {
  63                dev_err(dev, "please specify dma1\n");
  64                return 0;
  65        }
  66        return 1;
  67}
  68
  69static int snd_ad1848_probe(struct device *dev, unsigned int n)
  70{
  71        struct snd_card *card;
  72        struct snd_wss *chip;
  73        int error;
  74
  75        error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
  76        if (error < 0)
  77                return error;
  78
  79        error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
  80                        thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
  81                        0, &chip);
  82        if (error < 0)
  83                return error;
  84
  85        card->private_data = chip;
  86
  87        error = snd_wss_pcm(chip, 0);
  88        if (error < 0)
  89                return error;
  90
  91        error = snd_wss_mixer(chip);
  92        if (error < 0)
  93                return error;
  94
  95        strscpy(card->driver, "AD1848", sizeof(card->driver));
  96        strscpy(card->shortname, chip->pcm->name, sizeof(card->shortname));
  97
  98        if (!thinkpad[n])
  99                snprintf(card->longname, sizeof(card->longname),
 100                         "%s at 0x%lx, irq %d, dma %d",
 101                         chip->pcm->name, chip->port, irq[n], dma1[n]);
 102        else
 103                snprintf(card->longname, sizeof(card->longname),
 104                         "%s at 0x%lx, irq %d, dma %d [Thinkpad]",
 105                         chip->pcm->name, chip->port, irq[n], dma1[n]);
 106
 107        error = snd_card_register(card);
 108        if (error < 0)
 109                return error;
 110
 111        dev_set_drvdata(dev, card);
 112        return 0;
 113}
 114
 115#ifdef CONFIG_PM
 116static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
 117{
 118        struct snd_card *card = dev_get_drvdata(dev);
 119        struct snd_wss *chip = card->private_data;
 120
 121        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 122        chip->suspend(chip);
 123        return 0;
 124}
 125
 126static int snd_ad1848_resume(struct device *dev, unsigned int n)
 127{
 128        struct snd_card *card = dev_get_drvdata(dev);
 129        struct snd_wss *chip = card->private_data;
 130
 131        chip->resume(chip);
 132        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 133        return 0;
 134}
 135#endif
 136
 137static struct isa_driver snd_ad1848_driver = {
 138        .match          = snd_ad1848_match,
 139        .probe          = snd_ad1848_probe,
 140#ifdef CONFIG_PM
 141        .suspend        = snd_ad1848_suspend,
 142        .resume         = snd_ad1848_resume,
 143#endif
 144        .driver         = {
 145                .name   = DEV_NAME
 146        }
 147};
 148
 149module_isa_driver(snd_ad1848_driver, SNDRV_CARDS);
 150