[ALSA] cmi8330 - Use platform_device, add PM support
Takashi Iwai [Thu, 17 Nov 2005 16:11:35 +0000 (17:11 +0100)]
Modules: CMI8330 driver

Rewrite the probe/remove with platform_device.
Also, add the PM support.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/cmi8330.c

index cf16006..ba0114e 100644 (file)
@@ -45,6 +45,8 @@
 
 #include <sound/driver.h>
 #include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/pnp.h>
 #include <linux/moduleparam.h>
@@ -156,8 +158,6 @@ struct snd_cmi8330 {
        } streams[2];
 };
 
-static struct snd_card *snd_cmi8330_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
-
 #ifdef CONFIG_PNP
 
 static struct pnp_card_device_id snd_cmi8330_pnpids[] = {
@@ -429,6 +429,31 @@ static int __devinit snd_cmi8330_pcm(struct snd_card *card, struct snd_cmi8330 *
 }
 
 
+#ifdef CONFIG_PM
+static int snd_cmi8330_suspend(struct snd_card *card)
+{
+       struct snd_cmi8330 *acard = card->private_data;
+
+       snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+       snd_pcm_suspend_all(acard->pcm);
+       acard->wss->suspend(acard->wss);
+       snd_sbmixer_suspend(acard->sb);
+       return 0;
+}
+
+static int snd_cmi8330_resume(struct snd_card *card)
+{
+       struct snd_cmi8330 *acard = card->private_data;
+
+       snd_sbdsp_reset(acard->sb);
+       snd_sbmixer_suspend(acard->sb);
+       acard->wss->resume(acard->wss);
+       snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+       return 0;
+}
+#endif
+
+
 /*
  */
 
@@ -440,44 +465,28 @@ static int __devinit snd_cmi8330_pcm(struct snd_card *card, struct snd_cmi8330 *
 
 #define PFX    "cmi8330: "
 
-static int __devinit snd_cmi8330_probe(int dev,
-                                      struct pnp_card_link *pcard,
-                                      const struct pnp_card_device_id *pid)
+static struct snd_card *snd_cmi8330_card_new(int dev)
 {
        struct snd_card *card;
        struct snd_cmi8330 *acard;
-       int i, err;
-
-       if (! is_isapnp_selected(dev)) {
-               if (wssport[dev] == SNDRV_AUTO_PORT) {
-                       snd_printk(KERN_ERR PFX "specify wssport\n");
-                       return -EINVAL;
-               }
-               if (sbport[dev] == SNDRV_AUTO_PORT) {
-                       snd_printk(KERN_ERR PFX "specify sbport\n");
-                       return -EINVAL;
-               }
-       }
 
        card = snd_card_new(index[dev], id[dev], THIS_MODULE,
                            sizeof(struct snd_cmi8330));
        if (card == NULL) {
                snd_printk(KERN_ERR PFX "could not get a new card\n");
-               return -ENOMEM;
+               return NULL;
        }
-       acard = (struct snd_cmi8330 *)card->private_data;
+       acard = card->private_data;
        acard->card = card;
+       return card;
+}
 
-#ifdef CONFIG_PNP
-       if (isapnp[dev]) {
-               if ((err = snd_cmi8330_pnp(dev, acard, pcard, pid)) < 0) {
-                       snd_printk(KERN_ERR PFX "PnP detection failed\n");
-                       goto _err;
-               }
-               snd_card_set_dev(card, &pcard->card->dev);
-       }
-#endif
+static int __devinit snd_cmi8330_probe(struct snd_card *card, int dev)
+{
+       struct snd_cmi8330 *acard;
+       int i, err;
 
+       acard = card->private_data;
        if ((err = snd_ad1848_create(card,
                                     wssport[dev] + 4,
                                     wssirq[dev],
@@ -485,12 +494,11 @@ static int __devinit snd_cmi8330_probe(int dev,
                                     AD1848_HW_DETECT,
                                     &acard->wss)) < 0) {
                snd_printk(KERN_ERR PFX "(AD1848) device busy??\n");
-               goto _err;
+               return err;
        }
        if (acard->wss->hardware != AD1848_HW_CMI8330) {
                snd_printk(KERN_ERR PFX "(AD1848) not found during probe\n");
-               err = -ENODEV;
-               goto _err;
+               return -ENODEV;
        }
 
        if ((err = snd_sbdsp_create(card, sbport[dev],
@@ -500,11 +508,11 @@ static int __devinit snd_cmi8330_probe(int dev,
                                    sbdma16[dev],
                                    SB_HW_AUTO, &acard->sb)) < 0) {
                snd_printk(KERN_ERR PFX "(SB16) device busy??\n");
-               goto _err;
+               return err;
        }
        if (acard->sb->hardware != SB_HW_16) {
                snd_printk(KERN_ERR PFX "(SB16) not found during probe\n");
-               goto _err;
+               return err;
        }
 
        snd_ad1848_out(acard->wss, AD1848_MISC_INFO, 0x40); /* switch on MODE2 */
@@ -513,12 +521,12 @@ static int __devinit snd_cmi8330_probe(int dev,
 
        if ((err = snd_cmi8330_mixer(card, acard)) < 0) {
                snd_printk(KERN_ERR PFX "failed to create mixers\n");
-               goto _err;
+               return err;
        }
 
        if ((err = snd_cmi8330_pcm(card, acard)) < 0) {
                snd_printk(KERN_ERR PFX "failed to create pcms\n");
-               goto _err;
+               return err;
        }
 
        strcpy(card->driver, "CMI8330/C3D");
@@ -529,79 +537,162 @@ static int __devinit snd_cmi8330_probe(int dev,
                wssirq[dev],
                wssdma[dev]);
 
-       if ((err = snd_card_set_generic_dev(card)) < 0)
-               goto _err;
+       return snd_card_register(card);
+}
+
+static int __init snd_cmi8330_nonpnp_probe(struct platform_device *pdev)
+{
+       struct snd_card *card;
+       int err;
+       int dev = pdev->id;
 
-       if ((err = snd_card_register(card)) < 0)
-               goto _err;
+       if (wssport[dev] == SNDRV_AUTO_PORT) {
+               snd_printk(KERN_ERR PFX "specify wssport\n");
+               return -EINVAL;
+       }
+       if (sbport[dev] == SNDRV_AUTO_PORT) {
+               snd_printk(KERN_ERR PFX "specify sbport\n");
+               return -EINVAL;
+       }
 
-       if (pcard)
-               pnp_set_card_drvdata(pcard, card);
-       else
-               snd_cmi8330_legacy[dev] = card;
+       card = snd_cmi8330_card_new(dev);
+       if (! card)
+               return -ENOMEM;
+       snd_card_set_dev(card, &pdev->dev);
+       if ((err = snd_cmi8330_probe(card, dev)) < 0) {
+               snd_card_free(card);
+               return err;
+       }
+       platform_set_drvdata(pdev, card);
        return 0;
+}
+
+static int snd_cmi8330_nonpnp_remove(struct platform_device *devptr)
+{
+       snd_card_free(platform_get_drvdata(devptr));
+       platform_set_drvdata(devptr, NULL);
+       return 0;
+}
 
- _err:
-       snd_card_free(card);
-       return err;
+#ifdef CONFIG_PM
+static int snd_cmi8330_nonpnp_suspend(struct platform_device *dev, pm_message_t state)
+{
+       return snd_cmi8330_suspend(platform_get_drvdata(dev));
 }
 
+static int snd_cmi8330_nonpnp_resume(struct platform_device *dev)
+{
+       return snd_cmi8330_resume(platform_get_drvdata(dev));
+}
+#endif
+
+#define CMI8330_DRIVER "snd_cmi8330"
+
+static struct platform_driver snd_cmi8330_driver = {
+       .probe          = snd_cmi8330_nonpnp_probe,
+       .remove         = snd_cmi8330_nonpnp_remove,
+#ifdef CONFIG_PM
+       .suspend        = snd_cmi8330_nonpnp_suspend,
+       .resume         = snd_cmi8330_nonpnp_resume,
+#endif
+       .driver         = {
+               .name   = CMI8330_DRIVER
+       },
+};
+
+
 #ifdef CONFIG_PNP
-static int __devinit snd_cmi8330_pnp_detect(struct pnp_card_link *card,
-                                           const struct pnp_card_device_id *id)
+static int __devinit snd_cmi8330_pnp_detect(struct pnp_card_link *pcard,
+                                           const struct pnp_card_device_id *pid)
 {
        static int dev;
+       struct snd_card *card;
        int res;
 
        for ( ; dev < SNDRV_CARDS; dev++) {
-               if (!enable[dev] || !isapnp[dev])
-                       continue;
-               res = snd_cmi8330_probe(dev, card, id);
-               if (res < 0)
-                       return res;
-               dev++;
-               return 0;
+               if (enable[dev] && isapnp[dev])
+                       break;
+       }
+       if (dev >= SNDRV_CARDS)
+               return -ENODEV;
+                              
+       card = snd_cmi8330_card_new(dev);
+       if (! card)
+               return -ENOMEM;
+       if ((res = snd_cmi8330_pnp(dev, card->private_data, pcard, pid)) < 0) {
+               snd_printk(KERN_ERR PFX "PnP detection failed\n");
+               snd_card_free(card);
+               return res;
+       }
+       snd_card_set_dev(card, &pcard->card->dev);
+       if ((res = snd_cmi8330_probe(card, dev)) < 0) {
+               snd_card_free(card);
+               return res;
        }
-       return -ENODEV;
+       pnp_set_card_drvdata(pcard, card);
+       dev++;
+       return 0;
 }
 
 static void __devexit snd_cmi8330_pnp_remove(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_cmi8330_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
+{
+       return snd_cmi8330_suspend(pnp_get_card_drvdata(pcard));
 }
 
+static int snd_cmi8330_pnp_resume(struct pnp_card_link *pcard)
+{
+       return snd_cmi8330_resume(pnp_get_card_drvdata(pcard));
+}
+#endif
+
 static struct pnp_card_driver cmi8330_pnpc_driver = {
        .flags = PNP_DRIVER_RES_DISABLE,
        .name = "cmi8330",
        .id_table = snd_cmi8330_pnpids,
        .probe = snd_cmi8330_pnp_detect,
        .remove = __devexit_p(snd_cmi8330_pnp_remove),
+#ifdef CONFIG_PM
+       .suspend        = snd_cmi8330_pnp_suspend,
+       .resume         = snd_cmi8330_pnp_resume,
+#endif
 };
 #endif /* CONFIG_PNP */
 
 static int __init alsa_card_cmi8330_init(void)
 {
-       int dev, cards = 0;
+       int i, err, cards = 0;
 
-       for (dev = 0; dev < SNDRV_CARDS; dev++) {
-               if (!enable[dev])
-                       continue;
-               if (is_isapnp_selected(dev))
+       if ((err = platform_driver_register(&snd_cmi8330_driver)) < 0)
+               return err;
+
+       for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
+               struct platform_device *device;
+               if (is_isapnp_selected(i))
                        continue;
-               if (snd_cmi8330_probe(dev, NULL, NULL) >= 0)
-                       cards++;
+               device = platform_device_register_simple(CMI8330_DRIVER,
+                                                        i, NULL, 0);
+               if (IS_ERR(device)) {
+                       err = PTR_ERR(device);
+                       platform_driver_unregister(&snd_cmi8330_driver);
+                       return err;
+               }
+               cards++;
        }
-#ifdef CONFIG_PNP
-       cards += pnp_register_card_driver(&cmi8330_pnpc_driver);
-#endif
+
+       err = pnp_register_card_driver(&cmi8330_pnpc_driver);
+       if (err > 0)
+               cards += err;
 
        if (!cards) {
-#ifdef CONFIG_PNP
                pnp_unregister_card_driver(&cmi8330_pnpc_driver);
-#endif
+               platform_driver_unregister(&snd_cmi8330_driver);
 #ifdef MODULE
                snd_printk(KERN_ERR "CMI8330 not found or device busy\n");
 #endif
@@ -612,14 +703,8 @@ static int __init alsa_card_cmi8330_init(void)
 
 static void __exit alsa_card_cmi8330_exit(void)
 {
-       int i;
-
-#ifdef CONFIG_PNP
-       /* PnP cards first */
        pnp_unregister_card_driver(&cmi8330_pnpc_driver);
-#endif
-       for (i = 0; i < SNDRV_CARDS; i++)
-               snd_card_free(snd_cmi8330_legacy[i]);
+       platform_driver_unregister(&snd_cmi8330_driver);
 }
 
 module_init(alsa_card_cmi8330_init)