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[ALSA] sscape - Use platform_device
Modules: Sound Scape driver Rewrite the probe/remove with platform_device. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
Jaroslav Kysela
parent
feb158e6ad
commit
277e926c9b
@ -23,6 +23,8 @@
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/pnp.h>
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#include <linux/spinlock.h>
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@ -75,8 +77,6 @@ static struct pnp_card_device_id sscape_pnpids[] = {
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MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids);
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#endif
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static struct snd_card *sscape_card[SNDRV_CARDS];
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#define MPU401_IO(i) ((i) + 0)
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#define MIDI_DATA_IO(i) ((i) + 0)
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@ -1080,48 +1080,18 @@ static int __devinit create_ad1845(struct snd_card *card, unsigned port, int irq
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}
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struct params
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{
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int index;
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const char *id;
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unsigned port;
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int irq;
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int mpu_irq;
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int dma1;
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};
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static inline struct params*
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init_params(struct params *params,
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int index,
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const char *id,
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unsigned port,
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int irq,
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int mpu_irq,
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int dma1)
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{
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params->index = index;
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params->id = id;
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params->port = port;
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params->irq = irq;
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params->mpu_irq = mpu_irq;
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params->dma1 = (dma1 & 0x03);
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return params;
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}
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/*
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* Create an ALSA soundcard entry for the SoundScape, using
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* the given list of port, IRQ and DMA resources.
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*/
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static int __devinit create_sscape(const struct params *params, struct snd_card **rcardp)
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static int __devinit create_sscape(int dev, struct snd_card **rcardp)
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{
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struct snd_card *card;
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register struct soundscape *sscape;
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register unsigned dma_cfg;
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unsigned irq_cfg;
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unsigned mpu_irq_cfg;
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unsigned xport;
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struct resource *io_res;
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unsigned long flags;
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int err;
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@ -1129,32 +1099,33 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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/*
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* Check that the user didn't pass us garbage data ...
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*/
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irq_cfg = get_irq_config(params->irq);
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irq_cfg = get_irq_config(irq[dev]);
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if (irq_cfg == INVALID_IRQ) {
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snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", params->irq);
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snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
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return -ENXIO;
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}
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mpu_irq_cfg = get_irq_config(params->mpu_irq);
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mpu_irq_cfg = get_irq_config(mpu_irq[dev]);
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if (mpu_irq_cfg == INVALID_IRQ) {
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printk(KERN_ERR "sscape: Invalid IRQ %d\n", params->mpu_irq);
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printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
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return -ENXIO;
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}
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xport = port[dev];
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/*
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* Grab IO ports that we will need to probe so that we
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* can detect and control this hardware ...
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*/
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if ((io_res = request_region(params->port, 8, "SoundScape")) == NULL) {
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snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", params->port);
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if ((io_res = request_region(xport, 8, "SoundScape")) == NULL) {
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snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", xport);
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return -EBUSY;
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}
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/*
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* Grab both DMA channels (OK, only one for now) ...
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*/
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if ((err = request_dma(params->dma1, "SoundScape")) < 0) {
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snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", params->dma1);
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if ((err = request_dma(dma[dev], "SoundScape")) < 0) {
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snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
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goto _release_region;
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}
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@ -1162,7 +1133,8 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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* Create a new ALSA sound card entry, in anticipation
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* of detecting our hardware ...
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*/
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if ((card = snd_card_new(params->index, params->id, THIS_MODULE, sizeof(struct soundscape))) == NULL) {
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if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE,
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sizeof(struct soundscape))) == NULL) {
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err = -ENOMEM;
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goto _release_dma;
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}
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@ -1171,7 +1143,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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spin_lock_init(&sscape->lock);
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spin_lock_init(&sscape->fwlock);
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sscape->io_res = io_res;
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sscape->io_base = params->port;
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sscape->io_base = xport;
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if (!detect_sscape(sscape)) {
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printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base);
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@ -1180,7 +1152,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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}
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printk(KERN_INFO "sscape: hardware detected at 0x%x, using IRQ %d, DMA %d\n",
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sscape->io_base, params->irq, params->dma1);
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sscape->io_base, irq[dev], dma[dev]);
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/*
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* Now create the hardware-specific device so that we can
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@ -1223,7 +1195,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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sscape_write_unsafe(sscape->io_base,
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GA_INTCFG_REG, 0xf0 | (mpu_irq_cfg << 2) | mpu_irq_cfg);
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sscape_write_unsafe(sscape->io_base,
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GA_CDCFG_REG, 0x09 | DMA_8BIT | (params->dma1 << 4) | (irq_cfg << 1));
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GA_CDCFG_REG, 0x09 | DMA_8BIT | (dma[dev] << 4) | (irq_cfg << 1));
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spin_unlock_irqrestore(&sscape->lock, flags);
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@ -1231,15 +1203,15 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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* We have now enabled the codec chip, and so we should
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* detect the AD1845 device ...
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*/
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if ((err = create_ad1845(card, CODEC_IO(params->port), params->irq, params->dma1)) < 0) {
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if ((err = create_ad1845(card, CODEC_IO(xport), irq[dev], dma[dev])) < 0) {
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printk(KERN_ERR "sscape: No AD1845 device at 0x%x, IRQ %d\n",
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CODEC_IO(params->port), params->irq);
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CODEC_IO(xport), irq[dev]);
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goto _release_card;
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}
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#define MIDI_DEVNUM 0
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if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(params->port), params->mpu_irq)) < 0) {
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if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(xport), mpu_irq[dev])) < 0) {
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printk(KERN_ERR "sscape: Failed to create MPU-401 device at 0x%x\n",
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MPU401_IO(params->port));
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MPU401_IO(xport));
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goto _release_card;
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}
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@ -1271,7 +1243,7 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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snd_card_free(card);
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_release_dma:
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free_dma(params->dma1);
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free_dma(dma[dev]);
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_release_region:
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release_and_free_resource(io_res);
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@ -1280,44 +1252,66 @@ static int __devinit create_sscape(const struct params *params, struct snd_card
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}
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static int sscape_cards __devinitdata;
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static struct params sscape_params[SNDRV_CARDS] __devinitdata;
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static int __init snd_sscape_probe(struct platform_device *pdev)
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{
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int dev = pdev->id;
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struct snd_card *card;
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int ret;
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dma[dev] &= 0x03;
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ret = create_sscape(dev, &card);
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if (ret < 0)
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return ret;
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snd_card_set_dev(card, &pdev->dev);
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if ((ret = snd_card_register(card)) < 0) {
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printk(KERN_ERR "sscape: Failed to register sound card\n");
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return ret;
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}
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platform_set_drvdata(pdev, card);
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return 0;
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}
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static int __devexit snd_sscape_remove(struct platform_device *devptr)
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{
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snd_card_free(platform_get_drvdata(devptr));
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platform_set_drvdata(devptr, NULL);
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return 0;
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}
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#define SSCAPE_DRIVER "snd_sscape"
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static struct platform_driver snd_sscape_driver = {
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.probe = snd_sscape_probe,
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.remove = __devexit_p(snd_sscape_remove),
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/* FIXME: suspend/resume */
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.driver = {
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.name = SSCAPE_DRIVER
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},
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};
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#ifdef CONFIG_PNP
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static inline int __devinit get_next_autoindex(int i)
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{
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while ((i < SNDRV_CARDS) && (port[i] != SNDRV_AUTO_PORT)) {
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while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT)
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++i;
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} /* while */
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return i;
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}
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static inline int __devinit is_port_known(unsigned io, struct params *params, int cards)
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{
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while (--cards >= 0) {
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if (params[cards].port == io)
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return 1;
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} /* while */
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return 0;
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}
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static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard,
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const struct pnp_card_device_id *pid)
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{
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struct pnp_dev *dev;
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static int idx = 0;
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struct pnp_dev *dev;
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struct snd_card *card;
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int ret;
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/*
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* Allow this function to fail *quietly* if all the ISA PnP
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* devices were configured using module parameters instead.
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*/
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if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS) {
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if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS)
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return -ENOSPC;
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}
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/*
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* We have found a candidate ISA PnP card. Now we
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@ -1339,66 +1333,45 @@ static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard,
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/*
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* Check that we still have room for another sound card ...
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*/
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if (sscape_cards >= SNDRV_CARDS) {
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printk(KERN_ERR "sscape: No room for another ALSA device\n");
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return -ENOSPC;
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}
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ret = -ENODEV;
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dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
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if (dev) {
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struct params *this;
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if (!pnp_is_active(dev)) {
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if (pnp_activate_dev(dev) < 0) {
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printk(KERN_INFO "sscape: device is inactive\n");
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return -EBUSY;
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}
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}
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/*
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* Read the correct parameters off the ISA PnP bus ...
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*/
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this = init_params(&sscape_params[sscape_cards],
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index[idx],
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id[idx],
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pnp_port_start(dev, 0),
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pnp_irq(dev, 0),
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pnp_irq(dev, 1),
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pnp_dma(dev, 0));
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if (! dev)
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return -ENODEV;
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/*
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* Do we know about this sound card already?
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*/
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if ( !is_port_known(this->port, sscape_params, sscape_cards) ) {
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struct snd_card *card;
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ret = create_sscape(this, &card);
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if (ret < 0)
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return ret;
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snd_card_set_dev(card, &pcard->card->dev);
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if ((ret = snd_card_register(card)) < 0) {
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printk(KERN_ERR "sscape: Failed to register sound card\n");
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snd_card_free(card);
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return ret;
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}
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pnp_set_card_drvdata(pcard, card);
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++sscape_cards;
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++idx;
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if (!pnp_is_active(dev)) {
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if (pnp_activate_dev(dev) < 0) {
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printk(KERN_INFO "sscape: device is inactive\n");
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return -EBUSY;
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}
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}
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/*
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* Read the correct parameters off the ISA PnP bus ...
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*/
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port[idx] = pnp_port_start(dev, 0);
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irq[idx] = pnp_irq(dev, 0);
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mpu_irq[idx] = pnp_irq(dev, 1);
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dma[idx] = pnp_dma(dev, 0) & 0x03;
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ret = create_sscape(idx, &card);
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if (ret < 0)
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return ret;
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snd_card_set_dev(card, &pcard->card->dev);
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if ((ret = snd_card_register(card)) < 0) {
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printk(KERN_ERR "sscape: Failed to register sound card\n");
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snd_card_free(card);
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return ret;
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}
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pnp_set_card_drvdata(pcard, card);
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++idx;
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return ret;
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}
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static void __devexit sscape_pnp_remove(struct pnp_card_link * pcard)
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{
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struct snd_card *card = (struct snd_card *) pnp_get_card_drvdata(pcard);
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snd_card_free(pnp_get_card_drvdata(pcard));
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pnp_set_card_drvdata(pcard, NULL);
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snd_card_disconnect(card);
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snd_card_free_in_thread(card);
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}
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static struct pnp_card_driver sscape_pnpc_driver = {
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@ -1411,11 +1384,14 @@ static struct pnp_card_driver sscape_pnpc_driver = {
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#endif /* CONFIG_PNP */
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static int __init sscape_manual_probe(struct params *params)
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static int __init sscape_manual_probe(void)
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{
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int ret;
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unsigned i;
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struct snd_card *card;
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struct platform_device *device;
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int i, ret;
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ret = platform_driver_register(&snd_sscape_driver);
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if (ret < 0)
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return ret;
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for (i = 0; i < SNDRV_CARDS; ++i) {
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/*
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@ -1430,52 +1406,32 @@ static int __init sscape_manual_probe(struct params *params)
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/*
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* Make sure we were given ALL of the other parameters.
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*/
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if ( (irq[i] == SNDRV_AUTO_IRQ) ||
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(mpu_irq[i] == SNDRV_AUTO_IRQ) ||
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(dma[i] == SNDRV_AUTO_DMA) ) {
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if (irq[i] == SNDRV_AUTO_IRQ ||
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mpu_irq[i] == SNDRV_AUTO_IRQ ||
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dma[i] == SNDRV_AUTO_DMA) {
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printk(KERN_INFO
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"sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n");
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platform_driver_unregister(&snd_sscape_driver);
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return -ENXIO;
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}
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/*
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* This cards looks OK ...
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*/
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init_params(params, index[i], id[i], port[i], irq[i], mpu_irq[i], dma[i]);
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ret = create_sscape(params, &card);
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if (ret < 0)
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return ret;
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if ((ret = snd_card_set_generic_dev(card)) < 0) {
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snd_card_free(card);
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return ret;
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device = platform_device_register_simple(SSCAPE_DRIVER,
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i, NULL, 0);
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if (IS_ERR(device)) {
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platform_driver_unregister(&snd_sscape_driver);
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return PTR_ERR(device);
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}
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if ((ret = snd_card_register(card)) < 0) {
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printk(KERN_ERR "sscape: Failed to register sound card\n");
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snd_card_free(card);
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return ret;
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}
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sscape_card[sscape_cards] = card;
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params++;
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sscape_cards++;
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} /* for */
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}
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return 0;
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}
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static void sscape_exit(void)
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{
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unsigned i;
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#ifdef CONFIG_PNP
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pnp_unregister_card_driver(&sscape_pnpc_driver);
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#endif
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for (i = 0; i < ARRAY_SIZE(sscape_card); ++i) {
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snd_card_free(sscape_card[i]);
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} /* for */
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platform_driver_unregister(&snd_sscape_driver);
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}
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@ -1489,24 +1445,10 @@ static int __init sscape_init(void)
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* of allocating cards, because the operator is
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* S-P-E-L-L-I-N-G it out for us...
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*/
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ret = sscape_manual_probe(sscape_params);
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if (ret < 0) {
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int i;
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for (i = 0; i < sscape_cards; ++i)
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snd_card_free(sscape_card[i]);
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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;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user