From: Krzysztof Helt krzysztof.h1@wp.pl
This patch converts the dbri driver to use OF framework.
Signed-off-by: Krzysztof Helt krzysztof.h1@wp.pl
---
This patch requires the previous dbri patch with more code improvements posted yesterday.
diff -urp linux-2.6.23.orig/sound/sparc/dbri.c linux-2.6.23/sound/sparc/dbri.c --- linux-2.6.23.orig/sound/sparc/dbri.c 2007-09-04 18:34:14.000000000 +0200 +++ linux-2.6.23/sound/sparc/dbri.c 2007-09-04 18:38:20.638614486 +0200 @@ -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 * }
/* 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 fe * 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(st 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_dbr /* * */ -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_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_cont 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_i } #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 return err; }
- dbri->next = dbri_list; - dbri_list = dbri; - return 0; }
@@ -2577,20 +2569,19 @@ static void snd_dbri_free(struct snd_dbr (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_n 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_n 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);