ALSA: au1x00: convert to platform device
Make sound/mips/au1x00.c a proper platform_driver. [minor coding style fixes, cleanup and forward-ported by tiwai] Cc: Charles Eidsness <charles@cooper-street.com> Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Manuel Lauss
Takashi Iwai
parent
a4f2473d39
commit
7d13211cf9
1 changed files with 145 additions and 102 deletions
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@ -37,6 +37,7 @@
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <sound/core.h>
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@ -98,6 +99,7 @@ struct snd_au1000 {
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struct snd_pcm *pcm;
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struct audio_stream *stream[2]; /* playback & capture */
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int dmaid[2]; /* tx(0)/rx(1) DMA ids */
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};
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/*--------------------------- Local Functions --------------------------------*/
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@ -465,15 +467,17 @@ snd_au1000_pcm_new(struct snd_au1000 *au1000)
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spin_lock_init(&au1000->stream[CAPTURE]->dma_lock);
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flags = claim_dma_lock();
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if ((au1000->stream[PLAYBACK]->dma = request_au1000_dma(DMA_ID_AC97C_TX,
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au1000->stream[PLAYBACK]->dma = request_au1000_dma(au1000->dmaid[0],
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"AC97 TX", au1000_dma_interrupt, 0,
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au1000->stream[PLAYBACK])) < 0) {
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au1000->stream[PLAYBACK]);
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if (au1000->stream[PLAYBACK]->dma < 0) {
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release_dma_lock(flags);
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return -EBUSY;
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}
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if ((au1000->stream[CAPTURE]->dma = request_au1000_dma(DMA_ID_AC97C_RX,
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au1000->stream[CAPTURE]->dma = request_au1000_dma(au1000->dmaid[1],
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"AC97 RX", au1000_dma_interrupt, 0,
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au1000->stream[CAPTURE])) < 0){
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au1000->stream[CAPTURE]);
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if (au1000->stream[CAPTURE]->dma < 0){
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release_dma_lock(flags);
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return -EBUSY;
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}
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@ -552,27 +556,111 @@ get the interrupt driven case to work efficiently */
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spin_unlock(&au1000->ac97_lock);
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}
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static int
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snd_au1000_ac97_new(struct snd_au1000 *au1000)
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/*------------------------------ Setup / Destroy ----------------------------*/
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static void snd_au1000_free(struct snd_card *card)
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{
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int err;
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struct snd_ac97_bus *pbus;
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struct snd_ac97_template ac97;
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struct snd_au1000 *au1000 = card->private_data;
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if (au1000->stream[PLAYBACK]) {
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if (au1000->stream[PLAYBACK]->dma >= 0)
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free_au1000_dma(au1000->stream[PLAYBACK]->dma);
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kfree(au1000->stream[PLAYBACK]);
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}
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if (au1000->stream[CAPTURE]) {
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if (au1000->stream[CAPTURE]->dma >= 0)
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free_au1000_dma(au1000->stream[CAPTURE]->dma);
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kfree(au1000->stream[CAPTURE]);
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}
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if (au1000->ac97_res_port) {
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/* put internal AC97 block into reset */
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if (au1000->ac97_ioport) {
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au1000->ac97_ioport->cntrl = AC97C_RS;
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iounmap(au1000->ac97_ioport);
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au1000->ac97_ioport = NULL;
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}
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release_and_free_resource(au1000->ac97_res_port);
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au1000->ac97_res_port = NULL;
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}
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}
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static struct snd_ac97_bus_ops ops = {
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.write = snd_au1000_ac97_write,
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.read = snd_au1000_ac97_read,
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};
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if ((au1000->ac97_res_port = request_mem_region(CPHYSADDR(AC97C_CONFIG),
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0x100000, "Au1x00 AC97")) == NULL) {
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snd_printk(KERN_ERR "ALSA AC97: can't grap AC97 port\n");
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return -EBUSY;
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}
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au1000->ac97_ioport = (struct au1000_ac97_reg *)
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KSEG1ADDR(au1000->ac97_res_port->start);
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static int au1000_ac97_probe(struct platform_device *pdev)
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{
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int err;
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void __iomem *io;
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struct resource *r;
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struct snd_card *card;
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struct snd_au1000 *au1000;
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struct snd_ac97_bus *pbus;
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struct snd_ac97_template ac97;
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err = snd_card_create(-1, "AC97", THIS_MODULE,
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sizeof(struct snd_au1000), &card);
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if (err < 0)
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return err;
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au1000 = card->private_data;
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au1000->card = card;
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spin_lock_init(&au1000->ac97_lock);
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/* from here on let ALSA call the special freeing function */
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card->private_free = snd_au1000_free;
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/* TX DMA ID */
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r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
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if (!r) {
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err = -ENODEV;
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snd_printk(KERN_INFO "no TX DMA platform resource!\n");
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goto out;
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}
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au1000->dmaid[0] = r->start;
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/* RX DMA ID */
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r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
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if (!r) {
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err = -ENODEV;
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snd_printk(KERN_INFO "no RX DMA platform resource!\n");
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goto out;
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}
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au1000->dmaid[1] = r->start;
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au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream),
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GFP_KERNEL);
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if (!au1000->stream[PLAYBACK])
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goto out;
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au1000->stream[PLAYBACK]->dma = -1;
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au1000->stream[CAPTURE] = kmalloc(sizeof(struct audio_stream),
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GFP_KERNEL);
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if (!au1000->stream[CAPTURE])
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goto out;
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au1000->stream[CAPTURE]->dma = -1;
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r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!r)
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goto out;
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err = -EBUSY;
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au1000->ac97_res_port = request_mem_region(r->start,
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r->end - r->start + 1, pdev->name);
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if (!au1000->ac97_res_port) {
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snd_printk(KERN_ERR "ALSA AC97: can't grab AC97 port\n");
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goto out;
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}
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io = ioremap(r->start, r->end - r->start + 1);
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if (!io)
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goto out;
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au1000->ac97_ioport = (struct au1000_ac97_reg *)io;
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/* configure pins for AC'97
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TODO: move to board_setup.c */
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au_writel(au_readl(SYS_PINFUNC) & ~0x02, SYS_PINFUNC);
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@ -590,107 +678,62 @@ snd_au1000_ac97_new(struct snd_au1000 *au1000)
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mdelay(5);
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/* Initialise AC97 middle-layer */
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if ((err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus)) < 0)
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return err;
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err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus);
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if (err < 0)
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goto out;
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memset(&ac97, 0, sizeof(ac97));
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ac97.private_data = au1000;
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if ((err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97)) < 0)
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return err;
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return 0;
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}
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/*------------------------------ Setup / Destroy ----------------------------*/
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void
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snd_au1000_free(struct snd_card *card)
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{
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struct snd_au1000 *au1000 = card->private_data;
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if (au1000->ac97_res_port) {
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/* put internal AC97 block into reset */
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au1000->ac97_ioport->cntrl = AC97C_RS;
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au1000->ac97_ioport = NULL;
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release_and_free_resource(au1000->ac97_res_port);
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}
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if (au1000->stream[PLAYBACK]) {
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if (au1000->stream[PLAYBACK]->dma >= 0)
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free_au1000_dma(au1000->stream[PLAYBACK]->dma);
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kfree(au1000->stream[PLAYBACK]);
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}
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if (au1000->stream[CAPTURE]) {
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if (au1000->stream[CAPTURE]->dma >= 0)
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free_au1000_dma(au1000->stream[CAPTURE]->dma);
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kfree(au1000->stream[CAPTURE]);
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}
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}
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static struct snd_card *au1000_card;
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static int __init
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au1000_init(void)
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{
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int err;
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struct snd_card *card;
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struct snd_au1000 *au1000;
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err = snd_card_create(-1, "AC97", THIS_MODULE,
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sizeof(struct snd_au1000), &card);
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err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97);
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if (err < 0)
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return err;
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goto out;
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card->private_free = snd_au1000_free;
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au1000 = card->private_data;
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au1000->card = card;
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au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream), GFP_KERNEL);
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au1000->stream[CAPTURE ] = kmalloc(sizeof(struct audio_stream), GFP_KERNEL);
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/* so that snd_au1000_free will work as intended */
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au1000->ac97_res_port = NULL;
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if (au1000->stream[PLAYBACK])
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au1000->stream[PLAYBACK]->dma = -1;
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if (au1000->stream[CAPTURE ])
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au1000->stream[CAPTURE ]->dma = -1;
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if (au1000->stream[PLAYBACK] == NULL ||
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au1000->stream[CAPTURE ] == NULL) {
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snd_card_free(card);
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return -ENOMEM;
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}
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if ((err = snd_au1000_ac97_new(au1000)) < 0 ) {
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snd_card_free(card);
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return err;
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}
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if ((err = snd_au1000_pcm_new(au1000)) < 0) {
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snd_card_free(card);
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return err;
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}
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err = snd_au1000_pcm_new(au1000);
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if (err < 0)
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goto out;
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strcpy(card->driver, "Au1000-AC97");
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strcpy(card->shortname, "AMD Au1000-AC97");
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sprintf(card->longname, "AMD Au1000--AC97 ALSA Driver");
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if ((err = snd_card_register(card)) < 0) {
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err = snd_card_register(card);
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if (err < 0)
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goto out;
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printk(KERN_INFO "ALSA AC97: Driver Initialized\n");
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platform_set_drvdata(pdev, card);
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return 0;
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out:
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snd_card_free(card);
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return err;
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}
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printk(KERN_INFO "ALSA AC97: Driver Initialized\n");
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au1000_card = card;
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return 0;
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}
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static void __exit au1000_exit(void)
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static int au1000_ac97_remove(struct platform_device *pdev)
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{
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snd_card_free(au1000_card);
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return snd_card_free(platform_get_drvdata(pdev));
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}
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module_init(au1000_init);
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module_exit(au1000_exit);
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struct platform_driver au1000_ac97c_driver = {
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.driver = {
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.name = "au1000-ac97c",
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.owner = THIS_MODULE,
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},
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.probe = au1000_ac97_probe,
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.remove = au1000_ac97_remove,
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};
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static int __init au1000_ac97_load(void)
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{
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return platform_driver_register(&au1000_ac97c_driver);
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}
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static void __exit au1000_ac97_unload(void)
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{
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platform_driver_unregister(&au1000_ac97c_driver);
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}
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module_init(au1000_ac97_load);
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module_exit(au1000_ac97_unload);
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