From 277e926c9b2722317a6bf89ed921d97f6784e0cc Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 17 Nov 2005 17:13:12 +0100 Subject: [ALSA] sscape - Use platform_device Modules: Sound Scape driver Rewrite the probe/remove with platform_device. Signed-off-by: Takashi Iwai --- sound/isa/sscape.c | 282 +++++++++++++++++++++-------------------------------- 1 file changed, 112 insertions(+), 170 deletions(-) (limited to 'sound/isa') diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c index d07963e..6271efe 100644 --- a/sound/isa/sscape.c +++ b/sound/isa/sscape.c @@ -23,6 +23,8 @@ #include #include +#include +#include #include #include #include @@ -75,8 +77,6 @@ static struct pnp_card_device_id sscape_pnpids[] = { MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids); #endif -static struct snd_card *sscape_card[SNDRV_CARDS]; - #define MPU401_IO(i) ((i) + 0) #define MIDI_DATA_IO(i) ((i) + 0) @@ -1080,48 +1080,18 @@ static int __devinit create_ad1845(struct snd_card *card, unsigned port, int irq } -struct params -{ - int index; - const char *id; - unsigned port; - int irq; - int mpu_irq; - int dma1; -}; - - -static inline struct params* -init_params(struct params *params, - int index, - const char *id, - unsigned port, - int irq, - int mpu_irq, - int dma1) -{ - params->index = index; - params->id = id; - params->port = port; - params->irq = irq; - params->mpu_irq = mpu_irq; - params->dma1 = (dma1 & 0x03); - - return params; -} - - /* * Create an ALSA soundcard entry for the SoundScape, using * the given list of port, IRQ and DMA resources. */ -static int __devinit create_sscape(const struct params *params, struct snd_card **rcardp) +static int __devinit create_sscape(int dev, struct snd_card **rcardp) { struct snd_card *card; register struct soundscape *sscape; register unsigned dma_cfg; unsigned irq_cfg; unsigned mpu_irq_cfg; + unsigned xport; struct resource *io_res; unsigned long flags; int err; @@ -1129,32 +1099,33 @@ static int __devinit create_sscape(const struct params *params, struct snd_card /* * Check that the user didn't pass us garbage data ... */ - irq_cfg = get_irq_config(params->irq); + irq_cfg = get_irq_config(irq[dev]); if (irq_cfg == INVALID_IRQ) { - snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", params->irq); + snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]); return -ENXIO; } - mpu_irq_cfg = get_irq_config(params->mpu_irq); + mpu_irq_cfg = get_irq_config(mpu_irq[dev]); if (mpu_irq_cfg == INVALID_IRQ) { - printk(KERN_ERR "sscape: Invalid IRQ %d\n", params->mpu_irq); + printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]); return -ENXIO; } + xport = port[dev]; /* * Grab IO ports that we will need to probe so that we * can detect and control this hardware ... */ - if ((io_res = request_region(params->port, 8, "SoundScape")) == NULL) { - snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", params->port); + if ((io_res = request_region(xport, 8, "SoundScape")) == NULL) { + snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", xport); return -EBUSY; } /* * Grab both DMA channels (OK, only one for now) ... */ - if ((err = request_dma(params->dma1, "SoundScape")) < 0) { - snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", params->dma1); + if ((err = request_dma(dma[dev], "SoundScape")) < 0) { + snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]); goto _release_region; } @@ -1162,7 +1133,8 @@ static int __devinit create_sscape(const struct params *params, struct snd_card * Create a new ALSA sound card entry, in anticipation * of detecting our hardware ... */ - if ((card = snd_card_new(params->index, params->id, THIS_MODULE, sizeof(struct soundscape))) == NULL) { + if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE, + sizeof(struct soundscape))) == NULL) { err = -ENOMEM; goto _release_dma; } @@ -1171,7 +1143,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card spin_lock_init(&sscape->lock); spin_lock_init(&sscape->fwlock); sscape->io_res = io_res; - sscape->io_base = params->port; + sscape->io_base = xport; if (!detect_sscape(sscape)) { printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base); @@ -1180,7 +1152,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card } printk(KERN_INFO "sscape: hardware detected at 0x%x, using IRQ %d, DMA %d\n", - sscape->io_base, params->irq, params->dma1); + sscape->io_base, irq[dev], dma[dev]); /* * Now create the hardware-specific device so that we can @@ -1223,7 +1195,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | (mpu_irq_cfg << 2) | mpu_irq_cfg); sscape_write_unsafe(sscape->io_base, - GA_CDCFG_REG, 0x09 | DMA_8BIT | (params->dma1 << 4) | (irq_cfg << 1)); + GA_CDCFG_REG, 0x09 | DMA_8BIT | (dma[dev] << 4) | (irq_cfg << 1)); spin_unlock_irqrestore(&sscape->lock, flags); @@ -1231,15 +1203,15 @@ static int __devinit create_sscape(const struct params *params, struct snd_card * We have now enabled the codec chip, and so we should * detect the AD1845 device ... */ - if ((err = create_ad1845(card, CODEC_IO(params->port), params->irq, params->dma1)) < 0) { + if ((err = create_ad1845(card, CODEC_IO(xport), irq[dev], dma[dev])) < 0) { printk(KERN_ERR "sscape: No AD1845 device at 0x%x, IRQ %d\n", - CODEC_IO(params->port), params->irq); + CODEC_IO(xport), irq[dev]); goto _release_card; } #define MIDI_DEVNUM 0 - if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(params->port), params->mpu_irq)) < 0) { + if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(xport), mpu_irq[dev])) < 0) { printk(KERN_ERR "sscape: Failed to create MPU-401 device at 0x%x\n", - MPU401_IO(params->port)); + MPU401_IO(xport)); goto _release_card; } @@ -1271,7 +1243,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card snd_card_free(card); _release_dma: - free_dma(params->dma1); + free_dma(dma[dev]); _release_region: release_and_free_resource(io_res); @@ -1280,44 +1252,66 @@ static int __devinit create_sscape(const struct params *params, struct snd_card } -static int sscape_cards __devinitdata; -static struct params sscape_params[SNDRV_CARDS] __devinitdata; +static int __init snd_sscape_probe(struct platform_device *pdev) +{ + int dev = pdev->id; + struct snd_card *card; + int ret; + + dma[dev] &= 0x03; + ret = create_sscape(dev, &card); + if (ret < 0) + return ret; + snd_card_set_dev(card, &pdev->dev); + if ((ret = snd_card_register(card)) < 0) { + printk(KERN_ERR "sscape: Failed to register sound card\n"); + return ret; + } + platform_set_drvdata(pdev, card); + return 0; +} + +static int __devexit snd_sscape_remove(struct platform_device *devptr) +{ + snd_card_free(platform_get_drvdata(devptr)); + platform_set_drvdata(devptr, NULL); + return 0; +} + +#define SSCAPE_DRIVER "snd_sscape" + +static struct platform_driver snd_sscape_driver = { + .probe = snd_sscape_probe, + .remove = __devexit_p(snd_sscape_remove), + /* FIXME: suspend/resume */ + .driver = { + .name = SSCAPE_DRIVER + }, +}; #ifdef CONFIG_PNP static inline int __devinit get_next_autoindex(int i) { - while ((i < SNDRV_CARDS) && (port[i] != SNDRV_AUTO_PORT)) { + while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT) ++i; - } /* while */ - return i; } -static inline int __devinit is_port_known(unsigned io, struct params *params, int cards) -{ - while (--cards >= 0) { - if (params[cards].port == io) - return 1; - } /* while */ - - return 0; -} - static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard, const struct pnp_card_device_id *pid) { - struct pnp_dev *dev; static int idx = 0; + struct pnp_dev *dev; + struct snd_card *card; int ret; /* * Allow this function to fail *quietly* if all the ISA PnP * devices were configured using module parameters instead. */ - if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS) { + if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS) return -ENOSPC; - } /* * We have found a candidate ISA PnP card. Now we @@ -1339,66 +1333,45 @@ static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard, /* * Check that we still have room for another sound card ... */ - if (sscape_cards >= SNDRV_CARDS) { - printk(KERN_ERR "sscape: No room for another ALSA device\n"); - return -ENOSPC; - } - - ret = -ENODEV; - dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL); - if (dev) { - struct params *this; - if (!pnp_is_active(dev)) { - if (pnp_activate_dev(dev) < 0) { - printk(KERN_INFO "sscape: device is inactive\n"); - return -EBUSY; - } - } - /* - * Read the correct parameters off the ISA PnP bus ... - */ - this = init_params(&sscape_params[sscape_cards], - index[idx], - id[idx], - pnp_port_start(dev, 0), - pnp_irq(dev, 0), - pnp_irq(dev, 1), - pnp_dma(dev, 0)); + if (! dev) + return -ENODEV; - /* - * Do we know about this sound card already? - */ - if ( !is_port_known(this->port, sscape_params, sscape_cards) ) { - struct snd_card *card; - - ret = create_sscape(this, &card); - if (ret < 0) - return ret; - snd_card_set_dev(card, &pcard->card->dev); - - if ((ret = snd_card_register(card)) < 0) { - printk(KERN_ERR "sscape: Failed to register sound card\n"); - snd_card_free(card); - return ret; - } - - pnp_set_card_drvdata(pcard, card); - ++sscape_cards; - ++idx; + if (!pnp_is_active(dev)) { + if (pnp_activate_dev(dev) < 0) { + printk(KERN_INFO "sscape: device is inactive\n"); + return -EBUSY; } } + /* + * Read the correct parameters off the ISA PnP bus ... + */ + port[idx] = pnp_port_start(dev, 0); + irq[idx] = pnp_irq(dev, 0); + mpu_irq[idx] = pnp_irq(dev, 1); + dma[idx] = pnp_dma(dev, 0) & 0x03; + + ret = create_sscape(idx, &card); + if (ret < 0) + return ret; + snd_card_set_dev(card, &pcard->card->dev); + if ((ret = snd_card_register(card)) < 0) { + printk(KERN_ERR "sscape: Failed to register sound card\n"); + snd_card_free(card); + return ret; + } + + pnp_set_card_drvdata(pcard, card); + ++idx; + return ret; } static void __devexit sscape_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); } static struct pnp_card_driver sscape_pnpc_driver = { @@ -1411,11 +1384,14 @@ static struct pnp_card_driver sscape_pnpc_driver = { #endif /* CONFIG_PNP */ -static int __init sscape_manual_probe(struct params *params) +static int __init sscape_manual_probe(void) { - int ret; - unsigned i; - struct snd_card *card; + struct platform_device *device; + int i, ret; + + ret = platform_driver_register(&snd_sscape_driver); + if (ret < 0) + return ret; for (i = 0; i < SNDRV_CARDS; ++i) { /* @@ -1430,52 +1406,32 @@ static int __init sscape_manual_probe(struct params *params) /* * Make sure we were given ALL of the other parameters. */ - if ( (irq[i] == SNDRV_AUTO_IRQ) || - (mpu_irq[i] == SNDRV_AUTO_IRQ) || - (dma[i] == SNDRV_AUTO_DMA) ) { + if (irq[i] == SNDRV_AUTO_IRQ || + mpu_irq[i] == SNDRV_AUTO_IRQ || + dma[i] == SNDRV_AUTO_DMA) { printk(KERN_INFO "sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n"); + platform_driver_unregister(&snd_sscape_driver); return -ENXIO; } /* * This cards looks OK ... */ - init_params(params, index[i], id[i], port[i], irq[i], mpu_irq[i], dma[i]); - - ret = create_sscape(params, &card); - if (ret < 0) - return ret; - - if ((ret = snd_card_set_generic_dev(card)) < 0) { - snd_card_free(card); - return ret; - } - if ((ret = snd_card_register(card)) < 0) { - printk(KERN_ERR "sscape: Failed to register sound card\n"); - snd_card_free(card); - return ret; + device = platform_device_register_simple(SSCAPE_DRIVER, + i, NULL, 0); + if (IS_ERR(device)) { + platform_driver_unregister(&snd_sscape_driver); + return PTR_ERR(device); } - - sscape_card[sscape_cards] = card; - params++; - sscape_cards++; - } /* for */ - + } return 0; } - static void sscape_exit(void) { - unsigned i; - -#ifdef CONFIG_PNP pnp_unregister_card_driver(&sscape_pnpc_driver); -#endif - for (i = 0; i < ARRAY_SIZE(sscape_card); ++i) { - snd_card_free(sscape_card[i]); - } /* for */ + platform_driver_unregister(&snd_sscape_driver); } @@ -1489,24 +1445,10 @@ static int __init sscape_init(void) * of allocating cards, because the operator is * S-P-E-L-L-I-N-G it out for us... */ - ret = sscape_manual_probe(sscape_params); - if (ret < 0) { - int i; - for (i = 0; i < sscape_cards; ++i) - snd_card_free(sscape_card[i]); + ret = sscape_manual_probe(); + if (ret < 0) return ret; - } - -#ifdef CONFIG_PNP - if (sscape_cards < SNDRV_CARDS) { - ret = pnp_register_card_driver(&sscape_pnpc_driver); - if (ret < 0) { - sscape_exit(); - return ret; - } - } -#endif - + pnp_register_card_driver(&sscape_pnpc_driver); return 0; } -- cgit v1.1