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		scnprintf(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		scnprintf(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);