sound/pcmcia/pdaudiocf/pdaudiocf.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Driver for Sound Core PDAudioCF soundcard
  *
  * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
  */

 #include <sound/core.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <pcmcia/ciscode.h>
 #include <pcmcia/cisreg.h>
 #include "pdaudiocf.h"
 #include <sound/initval.h>
 #include <linux/init.h>

 /*
  */

 #define CARD_NAME	"PDAudio-CF"

 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");

 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable switches */

 module_param_array(index, int, NULL, 0444);
 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
 module_param_array(id, charp, NULL, 0444);
 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
 module_param_array(enable, bool, NULL, 0444);
 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");

 /*
  */

 static struct snd_card *card_list[SNDRV_CARDS];

 /*
  * prototypes
  */
 static int pdacf_config(struct pcmcia_device *link);
 static void snd_pdacf_detach(struct pcmcia_device *p_dev);

 static void pdacf_release(struct pcmcia_device *link)
 {
 	free_irq(link->irq, link->priv);
 	pcmcia_disable_device(link);
 }

 /*
  * destructor
  */
 static int snd_pdacf_free(struct snd_pdacf *pdacf)
 {
 	struct pcmcia_device *link = pdacf->p_dev;

 	pdacf_release(link);

 	card_list[pdacf->index] = NULL;
 	pdacf->card = NULL;

 	kfree(pdacf);
 	return 0;
 }

 static int snd_pdacf_dev_free(struct snd_device *device)
 {
 	struct snd_pdacf *chip = device->device_data;
 	return snd_pdacf_free(chip);
 }

 /*
  * snd_pdacf_attach - attach callback for cs
  */
 static int snd_pdacf_probe(struct pcmcia_device *link)
 {
 	int i, err;
 	struct snd_pdacf *pdacf;
 	struct snd_card *card;
 	static const struct snd_device_ops ops = {
 		.dev_free =	snd_pdacf_dev_free,
 	};

 	snd_printdd(KERN_DEBUG "pdacf_attach called\n");
 	/* find an empty slot from the card list */
 	for (i = 0; i < SNDRV_CARDS; i++) {
 		if (! card_list[i])
 			break;
 	}
 	if (i >= SNDRV_CARDS) {
 		snd_printk(KERN_ERR "pdacf: too many cards found\n");
 		return -EINVAL;
 	}
 	if (! enable[i])
 		return -ENODEV; /* disabled explicitly */

 	/* ok, create a card instance */
 	err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
 			   0, &card);
 	if (err < 0) {
 		snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 		return err;
 	}

 	pdacf = snd_pdacf_create(card);
 	if (!pdacf) {
 		snd_card_free(card);
 		return -ENOMEM;
 	}

 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
 	if (err < 0) {
 		kfree(pdacf);
 		snd_card_free(card);
 		return err;
 	}

 	pdacf->index = i;
 	card_list[i] = card;

 	pdacf->p_dev = link;
 	link->priv = pdacf;

 	link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 	link->resource[0]->end = 16;

 	link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 	link->config_index = 1;
 	link->config_regs = PRESENT_OPTION;

 	return pdacf_config(link);
 }


 /**
  * snd_pdacf_assign_resources - initialize the hardware and card instance.
  * @port: i/o port for the card
  * @irq: irq number for the card
  *
  * this function assigns the specified port and irq, boot the card,
  * create pcm and control instances, and initialize the rest hardware.
  *
  * returns 0 if successful, or a negative error code.
  */
 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
 {
 	int err;
 	struct snd_card *card = pdacf->card;

 	snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 	pdacf->port = port;
 	pdacf->irq = irq;
 	pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;

 	err = snd_pdacf_ak4117_create(pdacf);
 	if (err < 0)
 		return err;

 	strcpy(card->driver, "PDAudio-CF");
 	sprintf(card->shortname, "Core Sound %s", card->driver);
 	sprintf(card->longname, "%s at 0x%x, irq %i",
 		card->shortname, port, irq);

 	err = snd_pdacf_pcm_new(pdacf);
 	if (err < 0)
 		return err;

 	if ((err = snd_card_register(card)) < 0)
 		return err;

 	return 0;
 }


 /*
  * snd_pdacf_detach - detach callback for cs
  */
 static void snd_pdacf_detach(struct pcmcia_device *link)
 {
 	struct snd_pdacf *chip = link->priv;

 	snd_printdd(KERN_DEBUG "pdacf_detach called\n");

 	if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 		snd_pdacf_powerdown(chip);
 	chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 	snd_card_disconnect(chip->card);
 	snd_card_free_when_closed(chip->card);
 }

 /*
  * configuration callback
  */

 static int pdacf_config(struct pcmcia_device *link)
 {
 	struct snd_pdacf *pdacf = link->priv;
 	int ret;

 	snd_printdd(KERN_DEBUG "pdacf_config called\n");
 	link->config_index = 0x5;
 	link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;

 	ret = pcmcia_request_io(link);
 	if (ret)
 		goto failed_preirq;

 	ret = request_threaded_irq(link->irq, pdacf_interrupt,
 				   pdacf_threaded_irq,
 				   IRQF_SHARED, link->devname, link->priv);
 	if (ret)
 		goto failed_preirq;

 	ret = pcmcia_enable_device(link);
 	if (ret)
 		goto failed;

 	if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
 					link->irq) < 0)
 		goto failed;

 	pdacf->card->sync_irq = link->irq;
 	return 0;

  failed:
 	free_irq(link->irq, link->priv);
 failed_preirq:
 	pcmcia_disable_device(link);
 	return -ENODEV;
 }

 #ifdef CONFIG_PM

 static int pdacf_suspend(struct pcmcia_device *link)
 {
 	struct snd_pdacf *chip = link->priv;

 	snd_printdd(KERN_DEBUG "SUSPEND\n");
 	if (chip) {
 		snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 		snd_pdacf_suspend(chip);
 	}

 	return 0;
 }

 static int pdacf_resume(struct pcmcia_device *link)
 {
 	struct snd_pdacf *chip = link->priv;

 	snd_printdd(KERN_DEBUG "RESUME\n");
 	if (pcmcia_dev_present(link)) {
 		if (chip) {
 			snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 			snd_pdacf_resume(chip);
 		}
 	}
 	snd_printdd(KERN_DEBUG "resume done!\n");

 	return 0;
 }

 #endif

 /*
  * Module entry points
  */
 static const struct pcmcia_device_id snd_pdacf_ids[] = {
 	/* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
 	PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
 	PCMCIA_DEVICE_NULL
 };
 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);

 static struct pcmcia_driver pdacf_cs_driver = {
 	.owner		= THIS_MODULE,
 	.name		= "snd-pdaudiocf",
 	.probe		= snd_pdacf_probe,
 	.remove		= snd_pdacf_detach,
 	.id_table	= snd_pdacf_ids,
 #ifdef CONFIG_PM
 	.suspend	= pdacf_suspend,
 	.resume		= pdacf_resume,
 #endif
 };
 module_pcmcia_driver(pdacf_cs_driver);
	// SPDX-License-Identifier: GPL-2.0-or-later
	/*
	* Driver for Sound Core PDAudioCF soundcard
	*
	* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
	*/

	#include <sound/core.h>
	#include <linux/slab.h>
	#include <linux/module.h>
	#include <pcmcia/ciscode.h>
	#include <pcmcia/cisreg.h>
	#include "pdaudiocf.h"
	#include <sound/initval.h>
	#include <linux/init.h>

	/*
	*/

	#define CARD_NAME "PDAudio-CF"

	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
	MODULE_DESCRIPTION("Sound Core " CARD_NAME);
	MODULE_LICENSE("GPL");
	MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");

	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
	static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */

	module_param_array(index, int, NULL, 0444);
	MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
	module_param_array(id, charp, NULL, 0444);
	MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
	module_param_array(enable, bool, NULL, 0444);
	MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");

	/*
	*/

	static struct snd_card *card_list[SNDRV_CARDS];

	/*
	* prototypes
	*/
	static int pdacf_config(struct pcmcia_device *link);
	static void snd_pdacf_detach(struct pcmcia_device *p_dev);

	static void pdacf_release(struct pcmcia_device *link)
	{
	free_irq(link->irq, link->priv);
	pcmcia_disable_device(link);
	}

	/*
	* destructor
	*/
	static int snd_pdacf_free(struct snd_pdacf *pdacf)
	{
	struct pcmcia_device *link = pdacf->p_dev;

	pdacf_release(link);

	card_list[pdacf->index] = NULL;
	pdacf->card = NULL;

	kfree(pdacf);
	return 0;
	}

	static int snd_pdacf_dev_free(struct snd_device *device)
	{
	struct snd_pdacf *chip = device->device_data;
	return snd_pdacf_free(chip);
	}

	/*
	* snd_pdacf_attach - attach callback for cs
	*/
	static int snd_pdacf_probe(struct pcmcia_device *link)
	{
	int i, err;
	struct snd_pdacf *pdacf;
	struct snd_card *card;
	static const struct snd_device_ops ops = {
	.dev_free = snd_pdacf_dev_free,
	};

	snd_printdd(KERN_DEBUG "pdacf_attach called\n");
	/* find an empty slot from the card list */
	for (i = 0; i < SNDRV_CARDS; i++) {
	if (! card_list[i])
	break;
	}
	if (i >= SNDRV_CARDS) {
	snd_printk(KERN_ERR "pdacf: too many cards found\n");
	return -EINVAL;
	}
	if (! enable[i])
	return -ENODEV; /* disabled explicitly */

	/* ok, create a card instance */
	err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
	0, &card);
	if (err < 0) {
	snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
	return err;
	}

	pdacf = snd_pdacf_create(card);
	if (!pdacf) {
	snd_card_free(card);
	return -ENOMEM;
	}

	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
	if (err < 0) {
	kfree(pdacf);
	snd_card_free(card);
	return err;
	}

	pdacf->index = i;
	card_list[i] = card;

	pdacf->p_dev = link;
	link->priv = pdacf;

	link->resource[0]->flags \|= IO_DATA_PATH_WIDTH_AUTO;
	link->resource[0]->end = 16;

	link->config_flags = CONF_ENABLE_IRQ \| CONF_ENABLE_PULSE_IRQ;
	link->config_index = 1;
	link->config_regs = PRESENT_OPTION;

	return pdacf_config(link);
	}


	/**
	* snd_pdacf_assign_resources - initialize the hardware and card instance.
	* @port: i/o port for the card
	* @irq: irq number for the card
	*
	* this function assigns the specified port and irq, boot the card,
	* create pcm and control instances, and initialize the rest hardware.
	*
	* returns 0 if successful, or a negative error code.
	*/
	static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
	{
	int err;
	struct snd_card *card = pdacf->card;

	snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
	pdacf->port = port;
	pdacf->irq = irq;
	pdacf->chip_status \|= PDAUDIOCF_STAT_IS_CONFIGURED;

	err = snd_pdacf_ak4117_create(pdacf);
	if (err < 0)
	return err;

	strcpy(card->driver, "PDAudio-CF");
	sprintf(card->shortname, "Core Sound %s", card->driver);
	sprintf(card->longname, "%s at 0x%x, irq %i",
	card->shortname, port, irq);

	err = snd_pdacf_pcm_new(pdacf);
	if (err < 0)
	return err;

	if ((err = snd_card_register(card)) < 0)
	return err;

	return 0;
	}


	/*
	* snd_pdacf_detach - detach callback for cs
	*/
	static void snd_pdacf_detach(struct pcmcia_device *link)
	{
	struct snd_pdacf *chip = link->priv;

	snd_printdd(KERN_DEBUG "pdacf_detach called\n");

	if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
	snd_pdacf_powerdown(chip);
	chip->chip_status \|= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
	snd_card_disconnect(chip->card);
	snd_card_free_when_closed(chip->card);
	}

	/*
	* configuration callback
	*/

	static int pdacf_config(struct pcmcia_device *link)
	{
	struct snd_pdacf *pdacf = link->priv;
	int ret;

	snd_printdd(KERN_DEBUG "pdacf_config called\n");
	link->config_index = 0x5;
	link->config_flags \|= CONF_ENABLE_IRQ \| CONF_ENABLE_PULSE_IRQ;

	ret = pcmcia_request_io(link);
	if (ret)
	goto failed_preirq;

	ret = request_threaded_irq(link->irq, pdacf_interrupt,
	pdacf_threaded_irq,
	IRQF_SHARED, link->devname, link->priv);
	if (ret)
	goto failed_preirq;

	ret = pcmcia_enable_device(link);
	if (ret)
	goto failed;

	if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
	link->irq) < 0)
	goto failed;

	pdacf->card->sync_irq = link->irq;
	return 0;

	failed:
	free_irq(link->irq, link->priv);
	failed_preirq:
	pcmcia_disable_device(link);
	return -ENODEV;
	}

	#ifdef CONFIG_PM

	static int pdacf_suspend(struct pcmcia_device *link)
	{
	struct snd_pdacf *chip = link->priv;

	snd_printdd(KERN_DEBUG "SUSPEND\n");
	if (chip) {
	snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
	snd_pdacf_suspend(chip);
	}

	return 0;
	}

	static int pdacf_resume(struct pcmcia_device *link)
	{
	struct snd_pdacf *chip = link->priv;

	snd_printdd(KERN_DEBUG "RESUME\n");
	if (pcmcia_dev_present(link)) {
	if (chip) {
	snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
	snd_pdacf_resume(chip);
	}
	}
	snd_printdd(KERN_DEBUG "resume done!\n");

	return 0;
	}

	#endif

	/*
	* Module entry points
	*/
	static const struct pcmcia_device_id snd_pdacf_ids[] = {
	/* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
	PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
	PCMCIA_DEVICE_NULL
	};
	MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);

	static struct pcmcia_driver pdacf_cs_driver = {
	.owner = THIS_MODULE,
	.name = "snd-pdaudiocf",
	.probe = snd_pdacf_probe,
	.remove = snd_pdacf_detach,
	.id_table = snd_pdacf_ids,
	#ifdef CONFIG_PM
	.suspend = pdacf_suspend,
	.resume = pdacf_resume,
	#endif
	};
	module_pcmcia_driver(pdacf_cs_driver);