cs4231.c

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *  Generic driver for CS4231 chips
  4 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  5 *  Originally the CS4232/CS4232A driver, modified for use on CS4231 by
  6 *  Tugrul Galatali <galatalt@stuy.edu>
  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/mpu401.h>
 18#include <sound/initval.h>
 19
 20#define CRD_NAME "Generic CS4231"
 21#define DEV_NAME "cs4231"
 22
 23MODULE_DESCRIPTION(CRD_NAME);
 24MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 25MODULE_LICENSE("GPL");
 26
 27static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
 28static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
 29static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
 30static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
 31static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
 32static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,11,12,15 */
 33static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 9,11,12,15 */
 34static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
 35static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
 36
 37module_param_array(index, int, NULL, 0444);
 38MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
 39module_param_array(id, charp, NULL, 0444);
 40MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
 41module_param_array(enable, bool, NULL, 0444);
 42MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
 43module_param_hw_array(port, long, ioport, NULL, 0444);
 44MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
 45module_param_hw_array(mpu_port, long, ioport, NULL, 0444);
 46MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " CRD_NAME " driver.");
 47module_param_hw_array(irq, int, irq, NULL, 0444);
 48MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
 49module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
 50MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " CRD_NAME " driver.");
 51module_param_hw_array(dma1, int, dma, NULL, 0444);
 52MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
 53module_param_hw_array(dma2, int, dma, NULL, 0444);
 54MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
 55
 56static int snd_cs4231_match(struct device *dev, unsigned int n)
 57{
 58	if (!enable[n])
 59		return 0;
 60
 61	if (port[n] == SNDRV_AUTO_PORT) {
 62		dev_err(dev, "please specify port\n");
 63		return 0;
 64	}
 65	if (irq[n] == SNDRV_AUTO_IRQ) {
 66		dev_err(dev, "please specify irq\n");
 67		return 0;
 68	}
 69	if (dma1[n] == SNDRV_AUTO_DMA) {
 70		dev_err(dev, "please specify dma1\n");
 71		return 0;
 72	}
 73	return 1;
 74}
 75
 76static int snd_cs4231_probe(struct device *dev, unsigned int n)
 77{
 78	struct snd_card *card;
 79	struct snd_wss *chip;
 80	int error;
 81
 82	error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
 83	if (error < 0)
 84		return error;
 85
 86	error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], dma2[n],
 87			WSS_HW_DETECT, 0, &chip);
 88	if (error < 0)
 89		return error;
 90
 91	card->private_data = chip;
 92
 93	error = snd_wss_pcm(chip, 0);
 94	if (error < 0)
 95		return error;
 96
 97	strscpy(card->driver, "CS4231", sizeof(card->driver));
 98	strscpy(card->shortname, chip->pcm->name, sizeof(card->shortname));
 99
100	if (dma2[n] < 0)
101		scnprintf(card->longname, sizeof(card->longname),
102			  "%s at 0x%lx, irq %d, dma %d",
103			  chip->pcm->name, chip->port, irq[n], dma1[n]);
104	else
105		scnprintf(card->longname, sizeof(card->longname),
106			  "%s at 0x%lx, irq %d, dma %d&%d",
107			  chip->pcm->name, chip->port, irq[n], dma1[n], dma2[n]);
108
109	error = snd_wss_mixer(chip);
110	if (error < 0)
111		return error;
112
113	error = snd_wss_timer(chip, 0);
114	if (error < 0)
115		return error;
116
117	if (mpu_port[n] > 0 && mpu_port[n] != SNDRV_AUTO_PORT) {
118		if (mpu_irq[n] == SNDRV_AUTO_IRQ)
119			mpu_irq[n] = -1;
120		if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
121					mpu_port[n], 0, mpu_irq[n],
122					NULL) < 0)
123			dev_warn(dev, "MPU401 not detected\n");
124	}
125
126	error = snd_card_register(card);
127	if (error < 0)
128		return error;
129
130	dev_set_drvdata(dev, card);
131	return 0;
132}
133
134#ifdef CONFIG_PM
135static int snd_cs4231_suspend(struct device *dev, unsigned int n, pm_message_t state)
136{
137	struct snd_card *card = dev_get_drvdata(dev);
138	struct snd_wss *chip = card->private_data;
139
140	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
141	chip->suspend(chip);
142	return 0;
143}
144
145static int snd_cs4231_resume(struct device *dev, unsigned int n)
146{
147	struct snd_card *card = dev_get_drvdata(dev);
148	struct snd_wss *chip = card->private_data;
149
150	chip->resume(chip);
151	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
152	return 0;
153}
154#endif
155
156static struct isa_driver snd_cs4231_driver = {
157	.match		= snd_cs4231_match,
158	.probe		= snd_cs4231_probe,
159#ifdef CONFIG_PM
160	.suspend	= snd_cs4231_suspend,
161	.resume		= snd_cs4231_resume,
162#endif
163	.driver		= {
164		.name	= DEV_NAME
165	}
166};
167
168module_isa_driver(snd_cs4231_driver, SNDRV_CARDS);