[ALSA] dbri: conversion to OpenFirmware framework

This patch converts the dbri driver to use OF framework.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 12d11fc..e96023f 100644 (file)
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -66,6 +66,7 @@
 #include <sound/control.h>
 #include <sound/initval.h>
 
+#include <asm/prom.h>
 #include <asm/sbus.h>
 #include <asm/atomic.h>
 
@@ -296,8 +297,6 @@ struct dbri_streaminfo {
 
 /* This structure holds the information for both chips (DBRI & CS4215) */
 struct snd_dbri {
-       struct snd_card *card;  /* ALSA card */
-
        int regs_size, irq;     /* Needed for unload */
        struct sbus_dev *sdev;  /* SBUS device info */
        spinlock_t lock;
@@ -318,8 +317,6 @@ struct snd_dbri {
        struct cs4215 mm;       /* mmcodec special info */
                                /* per stream (playback/record) info */
        struct dbri_streaminfo stream_info[DBRI_NO_STREAMS];
-
-       struct snd_dbri *next;
 };
 
 #define DBRI_MAX_VOLUME                63      /* Output volume */
@@ -571,8 +568,6 @@ struct snd_dbri {
 #define DBRI_STREAM(dbri, substream)   \
                &dbri->stream_info[DBRI_STREAMNO(substream)]
 
-static struct snd_dbri *dbri_list;     /* All DBRI devices */
-
 /*
  * Short data pipes transmit LSB first. The CS4215 receives MSB first. Grrr.
  * So we have to reverse the bits. Note: not all bit lengths are supported
@@ -748,7 +743,7 @@ static void dbri_reset(struct snd_dbri *dbri)
 }
 
 /* Lock must not be held before calling this */
-static void __init dbri_initialize(struct snd_dbri *dbri)
+static void __devinit dbri_initialize(struct snd_dbri *dbri)
 {
        s32 *cmd;
        u32 dma_addr;
@@ -1308,7 +1303,7 @@ to the DBRI via the CHI interface and few of the DBRI's PIO pins.
  * Lock must not be held before calling it.
 
 */
-static __init void cs4215_setup_pipes(struct snd_dbri *dbri)
+static __devinit void cs4215_setup_pipes(struct snd_dbri *dbri)
 {
        unsigned long flags;
 
@@ -1341,7 +1336,7 @@ static __init void cs4215_setup_pipes(struct snd_dbri *dbri)
        dbri_cmdwait(dbri);
 }
 
-static __init int cs4215_init_data(struct cs4215 *mm)
+static __devinit int cs4215_init_data(struct cs4215 *mm)
 {
        /*
         * No action, memory resetting only.
@@ -1633,7 +1628,7 @@ static int cs4215_prepare(struct snd_dbri *dbri, unsigned int rate,
 /*
  *
  */
-static __init int cs4215_init(struct snd_dbri *dbri)
+static __devinit int cs4215_init(struct snd_dbri *dbri)
 {
        u32 reg2 = sbus_readl(dbri->regs + REG2);
        dprintk(D_MM, "cs4215_init: reg2=0x%x\n", reg2);
@@ -2218,12 +2213,12 @@ static struct snd_pcm_ops snd_dbri_ops = {
        .pointer = snd_dbri_pointer,
 };
 
-static int __devinit snd_dbri_pcm(struct snd_dbri *dbri)
+static int __devinit snd_dbri_pcm(struct snd_card *card)
 {
        struct snd_pcm *pcm;
        int err;
 
-       if ((err = snd_pcm_new(dbri->card,
+       if ((err = snd_pcm_new(card,
                               /* ID */             "sun_dbri",
                               /* device */         0,
                               /* playback count */ 1,
@@ -2234,9 +2229,9 @@ static int __devinit snd_dbri_pcm(struct snd_dbri *dbri)
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_dbri_ops);
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_dbri_ops);
 
-       pcm->private_data = dbri;
+       pcm->private_data = card->private_data;
        pcm->info_flags = 0;
-       strcpy(pcm->name, dbri->card->shortname);
+       strcpy(pcm->name, card->shortname);
 
        if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm,
                        SNDRV_DMA_TYPE_CONTINUOUS,
@@ -2422,14 +2417,14 @@ static struct snd_kcontrol_new dbri_controls[] __devinitdata = {
        CS4215_SINGLE("Mic boost", 4, 4, 1, 1)
 };
 
-static int __init snd_dbri_mixer(struct snd_dbri *dbri)
+static int __devinit snd_dbri_mixer(struct snd_card *card)
 {
-       struct snd_card *card;
        int idx, err;
+       struct snd_dbri *dbri;
 
-       snd_assert(dbri != NULL && dbri->card != NULL, return -EINVAL);
+       snd_assert(card != NULL && card->private_data != NULL, return -EINVAL);
+       dbri = card->private_data;
 
-       card = dbri->card;
        strcpy(card->mixername, card->shortname);
 
        for (idx = 0; idx < ARRAY_SIZE(dbri_controls); idx++) {
@@ -2485,15 +2480,16 @@ static void dbri_debug_read(struct snd_info_entry *entry,
 }
 #endif
 
-void snd_dbri_proc(struct snd_dbri *dbri)
+void __devinit snd_dbri_proc(struct snd_card *card)
 {
+       struct snd_dbri *dbri = card->private_data;
        struct snd_info_entry *entry;
 
-       if (!snd_card_proc_new(dbri->card, "regs", &entry))
+       if (!snd_card_proc_new(card, "regs", &entry))
                snd_info_set_text_ops(entry, dbri, dbri_regs_read);
 
 #ifdef DBRI_DEBUG
-       if (!snd_card_proc_new(dbri->card, "debug", &entry)) {
+       if (!snd_card_proc_new(card, "debug", &entry)) {
                snd_info_set_text_ops(entry, dbri, dbri_debug_read);
                entry->mode = S_IFREG | S_IRUGO;        /* Readable only. */
        }
@@ -2507,17 +2503,16 @@ void snd_dbri_proc(struct snd_dbri *dbri)
 */
 static void snd_dbri_free(struct snd_dbri *dbri);
 
-static int __init snd_dbri_create(struct snd_card *card,
+static int __devinit snd_dbri_create(struct snd_card *card,
                                  struct sbus_dev *sdev,
-                                 struct linux_prom_irqs *irq, int dev)
+                                 int irq, int dev)
 {
        struct snd_dbri *dbri = card->private_data;
        int err;
 
        spin_lock_init(&dbri->lock);
-       dbri->card = card;
        dbri->sdev = sdev;
-       dbri->irq = irq->pri;
+       dbri->irq = irq;
 
        dbri->dma = sbus_alloc_consistent(sdev, sizeof(struct dbri_dma),
                                          &dbri->dma_dvma);
@@ -2555,9 +2550,6 @@ static int __init snd_dbri_create(struct snd_card *card,
                return err;
        }
 
-       dbri->next = dbri_list;
-       dbri_list = dbri;
-
        return 0;
 }
 
@@ -2577,20 +2569,19 @@ static void snd_dbri_free(struct snd_dbri *dbri)
                                     (void *)dbri->dma, dbri->dma_dvma);
 }
 
-static int __init dbri_attach(int prom_node, struct sbus_dev *sdev)
+static int __devinit dbri_probe(struct of_device *of_dev,
+                               const struct of_device_id *match)
 {
+       struct sbus_dev *sdev = to_sbus_device(&of_dev->dev);
        struct snd_dbri *dbri;
-       struct linux_prom_irqs irq;
+       int irq;
        struct resource *rp;
        struct snd_card *card;
        static int dev = 0;
        int err;
 
-       if (sdev->prom_name[9] < 'e') {
-               printk(KERN_ERR "DBRI: unsupported chip version %c found.\n",
-                      sdev->prom_name[9]);
-               return -EIO;
-       }
+       dprintk(D_GEN, "DBRI: Found %s in SBUS slot %d\n",
+               sdev->prom_name, sdev->slot);
 
        if (dev >= SNDRV_CARDS)
                return -ENODEV;
@@ -2599,10 +2590,9 @@ static int __init dbri_attach(int prom_node, struct sbus_dev *sdev)
                return -ENOENT;
        }
 
-       err = prom_getproperty(prom_node, "intr", (char *)&irq, sizeof(irq));
-       if (err < 0) {
-               printk(KERN_ERR "DBRI-%d: Firmware node lacks IRQ property.\n",
-                       dev);
+       irq = sdev->irqs[0];
+       if (irq <= 0) {
+               printk(KERN_ERR "DBRI-%d: No IRQ.\n", dev);
                return -ENODEV;
        }
 
@@ -2616,24 +2606,26 @@ static int __init dbri_attach(int prom_node, struct sbus_dev *sdev)
        rp = &sdev->resource[0];
        sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
                card->shortname,
-               rp->flags & 0xffL, (unsigned long long)rp->start, irq.pri);
+               rp->flags & 0xffL, (unsigned long long)rp->start, irq);
 
-       if ((err = snd_dbri_create(card, sdev, &irq, dev)) < 0) {
+       err = snd_dbri_create(card, sdev, irq, dev);
+       if (err < 0) {
                snd_card_free(card);
                return err;
        }
 
        dbri = card->private_data;
-       err = snd_dbri_pcm(dbri);
+       err = snd_dbri_pcm(card);
        if (err < 0)
                goto _err;
 
-       err = snd_dbri_mixer(dbri);
+       err = snd_dbri_mixer(card);
        if (err < 0)
                goto _err;
 
        /* /proc file handling */
-       snd_dbri_proc(dbri);
+       snd_dbri_proc(card);
+       dev_set_drvdata(&of_dev->dev, card);
 
        err = snd_card_register(card);
        if (err < 0)
@@ -2652,43 +2644,46 @@ _err:
        return err;
 }
 
-/* Probe for the dbri chip and then attach the driver. */
-static int __init dbri_init(void)
+static int __devexit dbri_remove(struct of_device *dev)
 {
-       struct sbus_bus *sbus;
-       struct sbus_dev *sdev;
-       int found = 0;
-
-       /* Probe each SBUS for the DBRI chip(s). */
-       for_all_sbusdev(sdev, sbus) {
-               /*
-                * The version is coded in the last character
-                */
-               if (!strncmp(sdev->prom_name, "SUNW,DBRI", 9)) {
-                       dprintk(D_GEN, "DBRI: Found %s in SBUS slot %d\n",
-                               sdev->prom_name, sdev->slot);
+       struct snd_card *card = dev_get_drvdata(&dev->dev);
 
-                       if (dbri_attach(sdev->prom_node, sdev) == 0)
-                               found++;
-               }
-       }
+       snd_dbri_free(card->private_data);
+       snd_card_free(card);
 
-       return (found > 0) ? 0 : -EIO;
+       dev_set_drvdata(&dev->dev, NULL);
+
+       return 0;
 }
 
-static void __exit dbri_exit(void)
-{
-       struct snd_dbri *this = dbri_list;
+static struct of_device_id dbri_match[] = {
+       {
+               .name = "SUNW,DBRIe",
+       },
+       {
+               .name = "SUNW,DBRIf",
+       },
+       {},
+};
 
-       while (this != NULL) {
-               struct snd_dbri *next = this->next;
-               struct snd_card *card = this->card;
+MODULE_DEVICE_TABLE(of, dbri_match);
 
-               snd_dbri_free(this);
-               snd_card_free(card);
-               this = next;
-       }
-       dbri_list = NULL;
+static struct of_platform_driver dbri_sbus_driver = {
+       .name           = "dbri",
+       .match_table    = dbri_match,
+       .probe          = dbri_probe,
+       .remove         = __devexit_p(dbri_remove),
+};
+
+/* Probe for the dbri chip and then attach the driver. */
+static int __init dbri_init(void)
+{
+       return of_register_driver(&dbri_sbus_driver, &sbus_bus_type);
+}
+
+static void __exit dbri_exit(void)
+{
+       of_unregister_driver(&dbri_sbus_driver);
 }
 
 module_init(dbri_init);