cs4231: Convert SBUS side to OF driver.
David S. Miller [Thu, 28 Aug 2008 01:24:01 +0000 (18:24 -0700)]
Signed-off-by: David S. Miller <davem@davemloft.net>

sound/sparc/cs4231.c

index e2be131..271b042 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Driver for CS4231 sound chips found on Sparcs.
- * Copyright (C) 2002 David S. Miller <davem@redhat.com>
+ * Copyright (C) 2002, 2008 David S. Miller <davem@davemloft.net>
  *
  * Based entirely upon drivers/sbus/audio/cs4231.c which is:
  * Copyright (C) 1996, 1997, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
@@ -17,7 +17,8 @@
 #include <linux/moduleparam.h>
 #include <linux/irq.h>
 #include <linux/io.h>
-
+#include <linux/of.h>
+#include <linux/of_device.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -29,7 +30,6 @@
 
 #ifdef CONFIG_SBUS
 #define SBUS_SUPPORT
-#include <asm/sbus.h>
 #endif
 
 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
@@ -116,7 +116,7 @@ struct snd_cs4231 {
 
        union {
 #ifdef SBUS_SUPPORT
-               struct sbus_dev         *sdev;
+               struct of_device        *op;
 #endif
 #ifdef EBUS_SUPPORT
                struct pci_dev          *pdev;
@@ -1785,7 +1785,7 @@ static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
 static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
 {
        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
-                                             &chip->dev_u.sdev->ofdev.dev,
+                                             &chip->dev_u.op->dev,
                                              64 * 1024, 128 * 1024);
 }
 
@@ -1795,11 +1795,13 @@ static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
 
 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
 {
+       struct of_device *op = chip->dev_u.op;
+
        if (chip->irq[0])
                free_irq(chip->irq[0], chip);
 
        if (chip->port)
-               sbus_iounmap(chip->port, chip->regs_size);
+               of_iounmap(&op->resource[0], chip->port, chip->regs_size);
 
        return 0;
 }
@@ -1816,7 +1818,7 @@ static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
 };
 
 static int __init snd_cs4231_sbus_create(struct snd_card *card,
-                                        struct sbus_dev *sdev,
+                                        struct of_device *op,
                                         int dev)
 {
        struct snd_cs4231 *chip = card->private_data;
@@ -1827,13 +1829,13 @@ static int __init snd_cs4231_sbus_create(struct snd_card *card,
        spin_lock_init(&chip->p_dma.sbus_info.lock);
        mutex_init(&chip->mce_mutex);
        mutex_init(&chip->open_mutex);
-       chip->dev_u.sdev = sdev;
-       chip->regs_size = sdev->reg_addrs[0].reg_size;
+       chip->dev_u.op = op;
+       chip->regs_size = resource_size(&op->resource[0]);
        memcpy(&chip->image, &snd_cs4231_original_image,
               sizeof(snd_cs4231_original_image));
 
-       chip->port = sbus_ioremap(&sdev->resource[0], 0,
-                                 chip->regs_size, "cs4231");
+       chip->port = of_ioremap(&op->resource[0], 0,
+                               chip->regs_size, "cs4231");
        if (!chip->port) {
                snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
                return -EIO;
@@ -1856,14 +1858,14 @@ static int __init snd_cs4231_sbus_create(struct snd_card *card,
        chip->c_dma.address = sbus_dma_addr;
        chip->c_dma.preallocate = sbus_dma_preallocate;
 
-       if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
+       if (request_irq(op->irqs[0], snd_cs4231_sbus_interrupt,
                        IRQF_SHARED, "cs4231", chip)) {
                snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
-                           dev, sdev->irqs[0]);
+                           dev, op->irqs[0]);
                snd_cs4231_sbus_free(chip);
                return -EBUSY;
        }
-       chip->irq[0] = sdev->irqs[0];
+       chip->irq[0] = op->irqs[0];
 
        if (snd_cs4231_probe(chip) < 0) {
                snd_cs4231_sbus_free(chip);
@@ -1880,12 +1882,16 @@ static int __init snd_cs4231_sbus_create(struct snd_card *card,
        return 0;
 }
 
-static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
+static int __devinit cs4231_probe(struct of_device *op, const struct of_device_id *match)
 {
-       struct resource *rp = &sdev->resource[0];
+       struct resource *rp = &op->resource[0];
        struct snd_card *card;
        int err;
 
+       if (strcmp(op->node->parent->name, "sbus") &&
+           strcmp(op->node->parent->name, "sbi"))
+               return -ENODEV;
+
        err = cs4231_attach_begin(&card);
        if (err)
                return err;
@@ -1894,9 +1900,9 @@ static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
                card->shortname,
                rp->flags & 0xffL,
                (unsigned long long)rp->start,
-               sdev->irqs[0]);
+               op->irqs[0]);
 
-       err = snd_cs4231_sbus_create(card, sdev, dev);
+       err = snd_cs4231_sbus_create(card, op, dev);
        if (err < 0) {
                snd_card_free(card);
                return err;
@@ -2101,12 +2107,25 @@ static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
 }
 #endif
 
-static int __init cs4231_init(void)
-{
 #ifdef SBUS_SUPPORT
-       struct sbus_bus *sbus;
-       struct sbus_dev *sdev;
+static struct of_device_id cs4231_match[] = {
+       {
+               .name = "SUNW,CS4231",
+       },
+       {},
+};
+
+MODULE_DEVICE_TABLE(of, cs4231_match);
+
+static struct of_platform_driver cs4231_driver = {
+       .name           = "audio",
+       .match_table    = cs4231_match,
+       .probe          = cs4231_probe,
+};
 #endif
+
+static int __init cs4231_init(void)
+{
 #ifdef EBUS_SUPPORT
        struct linux_ebus *ebus;
        struct linux_ebus_device *edev;
@@ -2116,11 +2135,10 @@ static int __init cs4231_init(void)
        found = 0;
 
 #ifdef SBUS_SUPPORT
-       for_all_sbusdev(sdev, sbus) {
-               if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
-                       if (cs4231_sbus_attach(sdev) == 0)
-                               found++;
-               }
+       {
+               int err = of_register_driver(&cs4231_driver, &of_bus_type);
+               if (err)
+                       return err;
        }
 #endif
 #ifdef EBUS_SUPPORT
@@ -2147,13 +2165,17 @@ static int __init cs4231_init(void)
 #endif
 
 
-       return (found > 0) ? 0 : -EIO;
+       return 0;
 }
 
 static void __exit cs4231_exit(void)
 {
        struct snd_cs4231 *p = cs4231_list;
 
+#ifdef SBUS_SUPPORT
+       of_unregister_driver(&cs4231_driver);
+#endif
+
        while (p != NULL) {
                struct snd_cs4231 *next = p->next;