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authorDavid S. Miller <davem@davemloft.net>2008-08-27 18:24:01 -0700
committerDavid S. Miller <davem@davemloft.net>2008-08-29 02:14:58 -0700
commitae251031ad22a659b8261440b049d5981e57880c (patch)
tree998b9fa6d530a775731b71ffc2d296ad6c11e173 /sound/sparc
parent759ee81be6d87c150ea2b300c221b4fec8b5f646 (diff)
cs4231: Convert SBUS side to OF driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound/sparc')
-rw-r--r--sound/sparc/cs4231.c78
1 files changed, 50 insertions, 28 deletions
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index e2be131723ed..271b0420f8be 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -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;

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