[ALSA] opl3sa2 - Use platform_device

Modules: OPL3SA2 driver

Rewrite the probe/remove with platform_device.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/opl3sa2.c

@@ -21,6 +21,8 @@
 
 #include <sound/driver.h>
 #include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/pm.h>
 #include <linux/slab.h>
@@ -126,21 +128,12 @@ struct snd_opl3sa2 {
 	struct snd_hwdep *synth;
 	struct snd_rawmidi *rmidi;
 	struct snd_cs4231 *cs4231;
-#ifdef CONFIG_PNP
-	struct pnp_dev *dev;
-#endif
 	unsigned char ctlregs[0x20];
 	int ymode;		/* SL added */
 	struct snd_kcontrol *master_switch;
 	struct snd_kcontrol *master_volume;
-#ifdef CONFIG_PM
-	void (*cs4231_suspend)(struct snd_cs4231 *);
-	void (*cs4231_resume)(struct snd_cs4231 *);
-#endif
 };
 
-static struct snd_card *snd_opl3sa2_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
-
 #define PFX	"opl3sa2: "
 
 #ifdef CONFIG_PNP
@@ -539,11 +532,10 @@ static int __init snd_opl3sa2_mixer(struct snd_opl3sa2 *chip)
 #ifdef CONFIG_PM
 static int snd_opl3sa2_suspend(struct snd_card *card, pm_message_t state)
 {
-	struct snd_opl3sa2 *chip = card->pm_private_data;
-
-	snd_pcm_suspend_all(chip->cs4231->pcm); /* stop before saving regs */
-	chip->cs4231_suspend(chip->cs4231);
+	struct snd_opl3sa2 *chip = card->private_data;
 
+	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+	chip->cs4231->suspend(chip->cs4231);
 	/* power down */
 	snd_opl3sa2_write(chip, OPL3SA2_PM_CTRL, OPL3SA2_PM_D3);
 
@@ -552,7 +544,7 @@ static int snd_opl3sa2_suspend(struct snd_card *card, pm_message_t state)
 
 static int snd_opl3sa2_resume(struct snd_card *card)
 {
-	struct snd_opl3sa2 *chip = card->pm_private_data;
+	struct snd_opl3sa2 *chip = card->private_data;
 	int i;
 
 	/* power up */
@@ -568,23 +560,20 @@ static int snd_opl3sa2_resume(struct snd_card *card)
 			snd_opl3sa2_write(chip, i, chip->ctlregs[i]);
 	}
 	/* restore cs4231 */
-	chip->cs4231_resume(chip->cs4231);
+	chip->cs4231->resume(chip->cs4231);
 
+	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 	return 0;
 }
 #endif /* CONFIG_PM */
 
 #ifdef CONFIG_PNP
 static int __init snd_opl3sa2_pnp(int dev, struct snd_opl3sa2 *chip,
-				  struct pnp_dev *pdev,
-				  int isapnp)
+				  struct pnp_dev *pdev)
 {
 	struct pnp_resource_table * cfg;
 	int err;
 
-	if (!isapnp && pnp_device_is_isapnp(pdev))
-		return -ENOENT;	/* we have another procedure - card */
-
 	cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
 	if (!cfg)
 		return -ENOMEM;
@@ -607,7 +596,7 @@ static int __init snd_opl3sa2_pnp(int dev, struct snd_opl3sa2 *chip,
 	if (irq[dev] != SNDRV_AUTO_IRQ)
 		pnp_resource_change(&cfg->irq_resource[0], irq[dev], 1);
 	err = pnp_manual_config_dev(pdev, cfg, 0);
-	if (err < 0 && isapnp)
+	if (err < 0)
 		snd_printk(KERN_ERR "PnP manual resources are invalid, using auto config\n");
 	err = pnp_activate_dev(pdev);
 	if (err < 0) {
@@ -628,111 +617,47 @@ static int __init snd_opl3sa2_pnp(int dev, struct snd_opl3sa2 *chip,
 	snd_printdd("%sPnP OPL3-SA: control port=0x%lx, dma1=%i, dma2=%i, irq=%i\n",
 		pnp_device_is_pnpbios(pdev) ? "BIOS" : "ISA", port[dev], dma1[dev], dma2[dev], irq[dev]);
 	kfree(cfg);
-	chip->dev = pdev;
 	return 0;
 }
-
-static int __init snd_opl3sa2_cpnp(int dev, struct snd_opl3sa2 *chip,
-				   struct pnp_card_link *card,
-				   const struct pnp_card_device_id *id)
-{
-	struct pnp_dev *pdev;
-	struct pnp_resource_table * cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
-
-	if (!cfg)
-		return -ENOMEM;
-	pdev = pnp_request_card_device(card, id->devs[0].id, NULL);
-	if (pdev == NULL) {
-		kfree(cfg);
-		return -EBUSY;
-	}
-	return snd_opl3sa2_pnp(dev, chip, pdev, 1);
-}
 #endif /* CONFIG_PNP */
 
-static int snd_opl3sa2_free(struct snd_opl3sa2 *chip)
+static void snd_opl3sa2_free(struct snd_card *card)
 {
+	struct snd_opl3sa2 *chip = card->private_data;
 	if (chip->irq >= 0)
 		free_irq(chip->irq, (void *)chip);
 	release_and_free_resource(chip->res_port);
-	kfree(chip);
-	return 0;
 }
 
-static int snd_opl3sa2_dev_free(struct snd_device *device)
-{
-	struct snd_opl3sa2 *chip = device->device_data;
-	return snd_opl3sa2_free(chip);
-}
-
-#ifdef CONFIG_PNP
-#define is_isapnp_selected(dev)		isapnp[dev]
-#else
-#define is_isapnp_selected(dev)		0
-#endif
-
-static int __devinit snd_opl3sa2_probe(int dev,
-				       struct pnp_dev *pdev,
-				       struct pnp_card_link *pcard,
-				       const struct pnp_card_device_id *pid)
+static struct snd_card *snd_opl3sa2_card_new(int dev)
 {
-	int xirq, xdma1, xdma2;
 	struct snd_card *card;
 	struct snd_opl3sa2 *chip;
-	struct snd_cs4231 *cs4231;
-	struct snd_opl3 *opl3;
-	static struct snd_device_ops ops = {
-		.dev_free =	snd_opl3sa2_dev_free,
-	};
-	int err;
 
-	if (! is_isapnp_selected(dev)) {
-		if (port[dev] == SNDRV_AUTO_PORT) {
-			snd_printk(KERN_ERR PFX "specify port\n");
-			return -EINVAL;
-		}
-		if (wss_port[dev] == SNDRV_AUTO_PORT) {
-			snd_printk(KERN_ERR PFX "specify wss_port\n");
-			return -EINVAL;
-		}
-		if (fm_port[dev] == SNDRV_AUTO_PORT) {
-			snd_printk(KERN_ERR PFX "specify fm_port\n");
-			return -EINVAL;
-		}
-		if (midi_port[dev] == SNDRV_AUTO_PORT) {
-			snd_printk(KERN_ERR PFX "specify midi_port\n");
-			return -EINVAL;
-		}
-	}
-
-	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+	card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(struct snd_opl3sa2));
 	if (card == NULL)
-		return -ENOMEM;
+		return NULL;
 	strcpy(card->driver, "OPL3SA2");
 	strcpy(card->shortname, "Yamaha OPL3-SA2");
-	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-	if (chip == NULL) {
-		err = -ENOMEM;
-		goto __error;
-	}
+	chip = card->private_data;
 	spin_lock_init(&chip->reg_lock);
 	chip->irq = -1;
-	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
-		goto __error;
-#ifdef CONFIG_PNP
-	if (pdev) {
-		if ((err = snd_opl3sa2_pnp(dev, chip, pdev, 0)) < 0)
-			goto __error;
-		snd_card_set_dev(card, &pdev->dev);
-	}
-	if (pcard) {
-		if ((err = snd_opl3sa2_cpnp(dev, chip, pcard, pid)) < 0)
-			goto __error;
-		snd_card_set_dev(card, &pcard->card->dev);
-	}
-#endif
-	chip->ymode = opl3sa3_ymode[dev] & 0x03 ; /* initialise this card from supplied (or default) parameter*/ 
 	chip->card = card;
+	card->private_free = snd_opl3sa2_free;
+	return card;
+}
+
+static int __devinit snd_opl3sa2_probe(struct snd_card *card, int dev)
+{
+	int xirq, xdma1, xdma2;
+	struct snd_opl3sa2 *chip;
+	struct snd_cs4231 *cs4231;
+	struct snd_opl3 *opl3;
+	int err;
+
+	/* initialise this card from supplied (or default) parameter*/ 
+	chip = card->private_data;
+	chip->ymode = opl3sa3_ymode[dev] & 0x03 ;
 	chip->port = port[dev];
 	xirq = irq[dev];
 	xdma1 = dma1[dev];
@@ -740,11 +665,10 @@ static int __devinit snd_opl3sa2_probe(int dev,
 	if (xdma2 < 0)
 		chip->single_dma = 1;
 	if ((err = snd_opl3sa2_detect(chip)) < 0)
-		goto __error;
-	if (request_irq(xirq, snd_opl3sa2_interrupt, SA_INTERRUPT, "OPL3-SA2", (void *)chip)) {
+		return err;
+	if (request_irq(xirq, snd_opl3sa2_interrupt, SA_INTERRUPT, "OPL3-SA2", chip)) {
 		snd_printk(KERN_ERR PFX "can't grab IRQ %d\n", xirq);
-		err = -ENODEV;
-		goto __error;
+		return -ENODEV;
 	}
 	chip->irq = xirq;
 	if ((err = snd_cs4231_create(card,
@@ -754,64 +678,39 @@ static int __devinit snd_opl3sa2_probe(int dev,
 				     CS4231_HWSHARE_IRQ,
 				     &cs4231)) < 0) {
 		snd_printd("Oops, WSS not detected at 0x%lx\n", wss_port[dev] + 4);
-		goto __error;
+		return err;
 	}
 	chip->cs4231 = cs4231;
 	if ((err = snd_cs4231_pcm(cs4231, 0, NULL)) < 0)
-		goto __error;
+		return err;
 	if ((err = snd_cs4231_mixer(cs4231)) < 0)
-		goto __error;
+		return err;
 	if ((err = snd_opl3sa2_mixer(chip)) < 0)
-		goto __error;
+		return err;
 	if ((err = snd_cs4231_timer(cs4231, 0, NULL)) < 0)
-		goto __error;
+		return err;
 	if (fm_port[dev] >= 0x340 && fm_port[dev] < 0x400) {
 		if ((err = snd_opl3_create(card, fm_port[dev],
 					   fm_port[dev] + 2,
 					   OPL3_HW_OPL3, 0, &opl3)) < 0)
-			goto __error;
+			return err;
 		if ((err = snd_opl3_timer_new(opl3, 1, 2)) < 0)
-			goto __error;
+			return err;
 		if ((err = snd_opl3_hwdep_new(opl3, 0, 1, &chip->synth)) < 0)
-			goto __error;
+			return err;
 	}
 	if (midi_port[dev] >= 0x300 && midi_port[dev] < 0x340) {
 		if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_OPL3SA2,
 					       midi_port[dev], 0,
 					       xirq, 0, &chip->rmidi)) < 0)
-			goto __error;
+			return err;
 	}
-#ifdef CONFIG_PM
-	chip->cs4231_suspend = chip->cs4231->suspend;
-	chip->cs4231_resume = chip->cs4231->resume;
-	/* now clear callbacks for cs4231 */
-	chip->cs4231->suspend = NULL;
-	chip->cs4231->resume = NULL;
-	snd_card_set_isa_pm_callback(card, snd_opl3sa2_suspend, snd_opl3sa2_resume, chip);
-#endif
-
 	sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 		card->shortname, chip->port, xirq, xdma1);
 	if (dma2 >= 0)
 		sprintf(card->longname + strlen(card->longname), "&%d", xdma2);
 
-	if ((err = snd_card_set_generic_dev(card)) < 0)
-		goto __error;
-
-	if ((err = snd_card_register(card)) < 0)
-		goto __error;
-
-	if (pdev)
-		pnp_set_drvdata(pdev, card);
-	else if (pcard)
-		pnp_set_card_drvdata(pcard, card);
-	else
-		snd_opl3sa2_legacy[dev] = card;
-	return 0;
-
- __error:
-	snd_card_free(card);
-	return err;
+	return snd_card_register(card);
 }
 
 #ifdef CONFIG_PNP
@@ -819,62 +718,114 @@ static int __devinit snd_opl3sa2_pnp_detect(struct pnp_dev *pdev,
 					    const struct pnp_device_id *id)
 {
 	static int dev;
-        int res;
+	int err;
+	struct snd_card *card;
 
-        for ( ; dev < SNDRV_CARDS; dev++) {
-                if (!enable[dev] || !isapnp[dev])
-                        continue;
-                res = snd_opl3sa2_probe(dev, pdev, NULL, NULL);
-                if (res < 0)
-                        return res;
-                dev++;
-                return 0;
+	if (pnp_device_is_isapnp(pdev))
+		return -ENOENT;	/* we have another procedure - card */
+	for (; dev < SNDRV_CARDS; dev++) {
+		if (enable[dev] && isapnp[dev])
+			break;
 	}
+	if (dev >= SNDRV_CARDS)
 		return -ENODEV;
+
+	card = snd_opl3sa2_card_new(dev);
+	if (! card)
+		return -ENOMEM;
+	if ((err = snd_opl3sa2_pnp(dev, card->private_data, pdev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	snd_card_set_dev(card, &pdev->dev);
+	if ((err = snd_opl3sa2_probe(card, dev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	pnp_set_drvdata(pdev, card);
+	dev++;
+	return 0;
 }
 
 static void __devexit snd_opl3sa2_pnp_remove(struct pnp_dev * pdev)
 {
-	struct snd_card *card = (struct snd_card *) pnp_get_drvdata(pdev);
+	snd_card_free(pnp_get_drvdata(pdev));
+	pnp_set_drvdata(pdev, NULL);
+}
 
-	snd_card_disconnect(card);
-	snd_card_free_in_thread(card);
+#ifdef CONFIG_PM
+static int snd_opl3sa2_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
+{
+	return snd_opl3sa2_suspend(pnp_get_drvdata(pdev), state);
 }
+static int snd_opl3sa2_pnp_resume(struct pnp_dev *pdev)
+{
+	return snd_opl3sa2_resume(pnp_get_drvdata(pdev));
+}
+#endif
 
 static struct pnp_driver opl3sa2_pnp_driver = {
 	.name = "opl3sa2-pnpbios",
 	.id_table = snd_opl3sa2_pnpbiosids,
 	.probe = snd_opl3sa2_pnp_detect,
 	.remove = __devexit_p(snd_opl3sa2_pnp_remove),
+#ifdef CONFIG_PM
+	.suspend = snd_opl3sa2_pnp_suspend,
+	.resume = snd_opl3sa2_pnp_resume,
+#endif
 };
 
-static int __devinit snd_opl3sa2_pnp_cdetect(struct pnp_card_link *card,
+static int __devinit snd_opl3sa2_pnp_cdetect(struct pnp_card_link *pcard,
 					     const struct pnp_card_device_id *id)
 {
 	static int dev;
-        int res;
+	struct pnp_dev *pdev;
+	int err;
+	struct snd_card *card;
 
-        for ( ; dev < SNDRV_CARDS; dev++) {
-		if (!enable[dev])
-			continue;
-		if (is_isapnp_selected(dev))
-			continue;
-                res = snd_opl3sa2_probe(dev, NULL, card, id);
-                if (res < 0)
-                        return res;
-                dev++;
-                return 0;
+	pdev = pnp_request_card_device(pcard, id->devs[0].id, NULL);
+	if (pdev == NULL)
+		return -EBUSY;
+	for (; dev < SNDRV_CARDS; dev++) {
+		if (enable[dev] && isapnp[dev])
+			break;
 	}
+	if (dev >= SNDRV_CARDS)
 		return -ENODEV;
+
+	card = snd_opl3sa2_card_new(dev);
+	if (! card)
+		return -ENOMEM;
+	if ((err = snd_opl3sa2_pnp(dev, card->private_data, pdev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	snd_card_set_dev(card, &pdev->dev);
+	if ((err = snd_opl3sa2_probe(card, dev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	pnp_set_card_drvdata(pcard, card);
+	dev++;
+	return 0;
 }
 
 static void __devexit snd_opl3sa2_pnp_cremove(struct pnp_card_link * pcard)
 {
-	struct snd_card *card = (struct snd_card *) pnp_get_card_drvdata(pcard);
+	snd_card_free(pnp_get_card_drvdata(pcard));
+	pnp_set_card_drvdata(pcard, NULL);
+}
 
-	snd_card_disconnect(card);
-	snd_card_free_in_thread(card);
+#ifdef CONFIG_PM
+static int snd_opl3sa2_pnp_csuspend(struct pnp_card_link *pcard, pm_message_t state)
+{
+	return snd_opl3sa2_suspend(pnp_get_card_drvdata(pcard), state);
 }
+static int snd_opl3sa2_pnp_cresume(struct pnp_card_link *pcard)
+{
+	return snd_opl3sa2_resume(pnp_get_card_drvdata(pcard));
+}
+#endif
 
 static struct pnp_card_driver opl3sa2_pnpc_driver = {
 	.flags = PNP_DRIVER_RES_DISABLE,
@@ -882,35 +833,118 @@ static struct pnp_card_driver opl3sa2_pnpc_driver = {
 	.id_table = snd_opl3sa2_pnpids,
 	.probe = snd_opl3sa2_pnp_cdetect,
 	.remove = __devexit_p(snd_opl3sa2_pnp_cremove),
+#ifdef CONFIG_PM
+	.suspend = snd_opl3sa2_pnp_csuspend,
+	.resume = snd_opl3sa2_pnp_cresume,
+#endif
 };
 #endif /* CONFIG_PNP */
 
+static int __init snd_opl3sa2_nonpnp_probe(struct platform_device *pdev)
+{
+	struct snd_card *card;
+	int err;
+	int dev = pdev->id;
+
+	if (port[dev] == SNDRV_AUTO_PORT) {
+		snd_printk(KERN_ERR PFX "specify port\n");
+		return -EINVAL;
+	}
+	if (wss_port[dev] == SNDRV_AUTO_PORT) {
+		snd_printk(KERN_ERR PFX "specify wss_port\n");
+		return -EINVAL;
+	}
+	if (fm_port[dev] == SNDRV_AUTO_PORT) {
+		snd_printk(KERN_ERR PFX "specify fm_port\n");
+		return -EINVAL;
+	}
+	if (midi_port[dev] == SNDRV_AUTO_PORT) {
+		snd_printk(KERN_ERR PFX "specify midi_port\n");
+		return -EINVAL;
+	}
+
+	card = snd_opl3sa2_card_new(dev);
+	if (! card)
+		return -ENOMEM;
+	snd_card_set_dev(card, &pdev->dev);
+	if ((err = snd_opl3sa2_probe(card, dev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	platform_set_drvdata(pdev, card);
+	return 0;
+}
+
+static int snd_opl3sa2_nonpnp_remove(struct platform_device *devptr)
+{
+	snd_card_free(platform_get_drvdata(devptr));
+	platform_set_drvdata(devptr, NULL);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_opl3sa2_nonpnp_suspend(struct platform_device *dev, pm_message_t state)
+{
+	return snd_opl3sa2_suspend(platform_get_drvdata(dev), state);
+}
+
+static int snd_opl3sa2_nonpnp_resume(struct platform_device *dev)
+{
+	return snd_opl3sa2_resume(platform_get_drvdata(dev));
+}
+#endif
+
+#define OPL3SA2_DRIVER	"snd_opl3sa2"
+
+static struct platform_driver snd_opl3sa2_nonpnp_driver = {
+	.probe		= snd_opl3sa2_nonpnp_probe,
+	.remove		= snd_opl3sa2_nonpnp_remove,
+#ifdef CONFIG_PM
+	.suspend	= snd_opl3sa2_nonpnp_suspend,
+	.resume		= snd_opl3sa2_nonpnp_resume,
+#endif
+	.driver		= {
+		.name	= OPL3SA2_DRIVER
+	},
+};
+
 static int __init alsa_card_opl3sa2_init(void)
 {
-	int dev, cards = 0;
+	int i, err, cards = 0;
 
-	for (dev = 0; dev < SNDRV_CARDS; dev++) {
-		if (!enable[dev])
-			continue;
+	if ((err = platform_driver_register(&snd_opl3sa2_nonpnp_driver)) < 0)
+		return err;
+
+	for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
+		struct platform_device *device;
 #ifdef CONFIG_PNP
-		if (isapnp[dev])
+		if (isapnp[i])
 			continue;
 #endif
-		if (snd_opl3sa2_probe(dev, NULL, NULL, NULL) >= 0)
+		device = platform_device_register_simple(OPL3SA2_DRIVER,
+							 i, NULL, 0);
+		if (IS_ERR(device)) {
+			err = PTR_ERR(device);
+			platform_driver_unregister(&snd_opl3sa2_nonpnp_driver);
+			return err;
+		}
 		cards++;
 	}
-#ifdef CONFIG_PNP
-	cards += pnp_register_driver(&opl3sa2_pnp_driver);
-	cards += pnp_register_card_driver(&opl3sa2_pnpc_driver);
-#endif
+
+	err = pnp_register_driver(&opl3sa2_pnp_driver);
+	if (err > 0)
+		cards += err;
+	err = pnp_register_card_driver(&opl3sa2_pnpc_driver);
+	if (err > 0)
+		cards += err;
+
 	if (!cards) {
 #ifdef MODULE
 		snd_printk(KERN_ERR "Yamaha OPL3-SA soundcard not found or device busy\n");
 #endif
-#ifdef CONFIG_PNP
 		pnp_unregister_card_driver(&opl3sa2_pnpc_driver);
 		pnp_unregister_driver(&opl3sa2_pnp_driver);
-#endif
+		platform_driver_unregister(&snd_opl3sa2_nonpnp_driver);
 		return -ENODEV;
 	}
 	return 0;
@@ -918,15 +952,9 @@ static int __init alsa_card_opl3sa2_init(void)
 
 static void __exit alsa_card_opl3sa2_exit(void)
 {
-	int idx;
-
-#ifdef CONFIG_PNP
-	/* PnP cards first */
 	pnp_unregister_card_driver(&opl3sa2_pnpc_driver);
 	pnp_unregister_driver(&opl3sa2_pnp_driver);
-#endif
-	for (idx = 0; idx < SNDRV_CARDS; idx++)
-		snd_card_free(snd_opl3sa2_legacy[idx]);
+	platform_driver_unregister(&snd_opl3sa2_nonpnp_driver);
 }
 
 module_init(alsa_card_opl3sa2_init)