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authorJohannes Berg <johannes@sipsolutions.net>2008-10-23 15:47:56 +0200
committerTakashi Iwai <tiwai@suse.de>2008-10-23 18:43:42 +0200
commit888dcb7cb26fb85dfe3486d28a2431d69d3e8148 (patch)
treeaad6f0dba4bdb63bc72280ed51a79f7dea284278 /sound/aoa/soundbus/i2sbus/i2sbus-core.c
parent72474be62d6ec2e0337ff01ecbd737f9c5c242c7 (diff)
ALSA: aoa: clean up file names
This cleans up the apple onboard audio driver filenames. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/aoa/soundbus/i2sbus/i2sbus-core.c')
-rw-r--r--sound/aoa/soundbus/i2sbus/i2sbus-core.c450
1 files changed, 0 insertions, 450 deletions
diff --git a/sound/aoa/soundbus/i2sbus/i2sbus-core.c b/sound/aoa/soundbus/i2sbus/i2sbus-core.c
deleted file mode 100644
index e6beb92c6933..000000000000
--- a/sound/aoa/soundbus/i2sbus/i2sbus-core.c
+++ /dev/null
@@ -1,450 +0,0 @@
-/*
- * i2sbus driver
- *
- * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
- *
- * GPL v2, can be found in COPYING.
- */
-
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-
-#include <sound/core.h>
-
-#include <asm/macio.h>
-#include <asm/dbdma.h>
-
-#include "../soundbus.h"
-#include "i2sbus.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
-MODULE_DESCRIPTION("Apple Soundbus: I2S support");
-
-static int force;
-module_param(force, int, 0444);
-MODULE_PARM_DESC(force, "Force loading i2sbus even when"
- " no layout-id property is present");
-
-static struct of_device_id i2sbus_match[] = {
- { .name = "i2s" },
- { }
-};
-
-MODULE_DEVICE_TABLE(of, i2sbus_match);
-
-static int alloc_dbdma_descriptor_ring(struct i2sbus_dev *i2sdev,
- struct dbdma_command_mem *r,
- int numcmds)
-{
- /* one more for rounding, one for branch back, one for stop command */
- r->size = (numcmds + 3) * sizeof(struct dbdma_cmd);
- /* We use the PCI APIs for now until the generic one gets fixed
- * enough or until we get some macio-specific versions
- */
- r->space = dma_alloc_coherent(
- &macio_get_pci_dev(i2sdev->macio)->dev,
- r->size,
- &r->bus_addr,
- GFP_KERNEL);
-
- if (!r->space) return -ENOMEM;
-
- memset(r->space, 0, r->size);
- r->cmds = (void*)DBDMA_ALIGN(r->space);
- r->bus_cmd_start = r->bus_addr +
- (dma_addr_t)((char*)r->cmds - (char*)r->space);
-
- return 0;
-}
-
-static void free_dbdma_descriptor_ring(struct i2sbus_dev *i2sdev,
- struct dbdma_command_mem *r)
-{
- if (!r->space) return;
-
- dma_free_coherent(&macio_get_pci_dev(i2sdev->macio)->dev,
- r->size, r->space, r->bus_addr);
-}
-
-static void i2sbus_release_dev(struct device *dev)
-{
- struct i2sbus_dev *i2sdev;
- int i;
-
- i2sdev = container_of(dev, struct i2sbus_dev, sound.ofdev.dev);
-
- if (i2sdev->intfregs) iounmap(i2sdev->intfregs);
- if (i2sdev->out.dbdma) iounmap(i2sdev->out.dbdma);
- if (i2sdev->in.dbdma) iounmap(i2sdev->in.dbdma);
- for (i = aoa_resource_i2smmio; i <= aoa_resource_rxdbdma; i++)
- if (i2sdev->allocated_resource[i])
- release_and_free_resource(i2sdev->allocated_resource[i]);
- free_dbdma_descriptor_ring(i2sdev, &i2sdev->out.dbdma_ring);
- free_dbdma_descriptor_ring(i2sdev, &i2sdev->in.dbdma_ring);
- for (i = aoa_resource_i2smmio; i <= aoa_resource_rxdbdma; i++)
- free_irq(i2sdev->interrupts[i], i2sdev);
- i2sbus_control_remove_dev(i2sdev->control, i2sdev);
- mutex_destroy(&i2sdev->lock);
- kfree(i2sdev);
-}
-
-static irqreturn_t i2sbus_bus_intr(int irq, void *devid)
-{
- struct i2sbus_dev *dev = devid;
- u32 intreg;
-
- spin_lock(&dev->low_lock);
- intreg = in_le32(&dev->intfregs->intr_ctl);
-
- /* acknowledge interrupt reasons */
- out_le32(&dev->intfregs->intr_ctl, intreg);
-
- spin_unlock(&dev->low_lock);
-
- return IRQ_HANDLED;
-}
-
-
-/*
- * XXX FIXME: We test the layout_id's here to get the proper way of
- * mapping in various registers, thanks to bugs in Apple device-trees.
- * We could instead key off the machine model and the name of the i2s
- * node (i2s-a). This we'll do when we move it all to macio_asic.c
- * and have that export items for each sub-node too.
- */
-static int i2sbus_get_and_fixup_rsrc(struct device_node *np, int index,
- int layout, struct resource *res)
-{
- struct device_node *parent;
- int pindex, rc = -ENXIO;
- const u32 *reg;
-
- /* Machines with layout 76 and 36 (K2 based) have a weird device
- * tree what we need to special case.
- * Normal machines just fetch the resource from the i2s-X node.
- * Darwin further divides normal machines into old and new layouts
- * with a subtely different code path but that doesn't seem necessary
- * in practice, they just bloated it. In addition, even on our K2
- * case the i2s-modem node, if we ever want to handle it, uses the
- * normal layout
- */
- if (layout != 76 && layout != 36)
- return of_address_to_resource(np, index, res);
-
- parent = of_get_parent(np);
- pindex = (index == aoa_resource_i2smmio) ? 0 : 1;
- rc = of_address_to_resource(parent, pindex, res);
- if (rc)
- goto bail;
- reg = of_get_property(np, "reg", NULL);
- if (reg == NULL) {
- rc = -ENXIO;
- goto bail;
- }
- res->start += reg[index * 2];
- res->end = res->start + reg[index * 2 + 1] - 1;
- bail:
- of_node_put(parent);
- return rc;
-}
-
-/* FIXME: look at device node refcounting */
-static int i2sbus_add_dev(struct macio_dev *macio,
- struct i2sbus_control *control,
- struct device_node *np)
-{
- struct i2sbus_dev *dev;
- struct device_node *child = NULL, *sound = NULL;
- struct resource *r;
- int i, layout = 0, rlen;
- static const char *rnames[] = { "i2sbus: %s (control)",
- "i2sbus: %s (tx)",
- "i2sbus: %s (rx)" };
- static irq_handler_t ints[] = {
- i2sbus_bus_intr,
- i2sbus_tx_intr,
- i2sbus_rx_intr
- };
-
- if (strlen(np->name) != 5)
- return 0;
- if (strncmp(np->name, "i2s-", 4))
- return 0;
-
- dev = kzalloc(sizeof(struct i2sbus_dev), GFP_KERNEL);
- if (!dev)
- return 0;
-
- i = 0;
- while ((child = of_get_next_child(np, child))) {
- if (strcmp(child->name, "sound") == 0) {
- i++;
- sound = child;
- }
- }
- if (i == 1) {
- const u32 *layout_id =
- of_get_property(sound, "layout-id", NULL);
- if (layout_id) {
- layout = *layout_id;
- snprintf(dev->sound.modalias, 32,
- "sound-layout-%d", layout);
- force = 1;
- }
- }
- /* for the time being, until we can handle non-layout-id
- * things in some fabric, refuse to attach if there is no
- * layout-id property or we haven't been forced to attach.
- * When there are two i2s busses and only one has a layout-id,
- * then this depends on the order, but that isn't important
- * either as the second one in that case is just a modem. */
- if (!force) {
- kfree(dev);
- return -ENODEV;
- }
-
- mutex_init(&dev->lock);
- spin_lock_init(&dev->low_lock);
- dev->sound.ofdev.node = np;
- dev->sound.ofdev.dma_mask = macio->ofdev.dma_mask;
- dev->sound.ofdev.dev.dma_mask = &dev->sound.ofdev.dma_mask;
- dev->sound.ofdev.dev.parent = &macio->ofdev.dev;
- dev->sound.ofdev.dev.release = i2sbus_release_dev;
- dev->sound.attach_codec = i2sbus_attach_codec;
- dev->sound.detach_codec = i2sbus_detach_codec;
- dev->sound.pcmid = -1;
- dev->macio = macio;
- dev->control = control;
- dev->bus_number = np->name[4] - 'a';
- INIT_LIST_HEAD(&dev->sound.codec_list);
-
- for (i = aoa_resource_i2smmio; i <= aoa_resource_rxdbdma; i++) {
- dev->interrupts[i] = -1;
- snprintf(dev->rnames[i], sizeof(dev->rnames[i]),
- rnames[i], np->name);
- }
- for (i = aoa_resource_i2smmio; i <= aoa_resource_rxdbdma; i++) {
- int irq = irq_of_parse_and_map(np, i);
- if (request_irq(irq, ints[i], 0, dev->rnames[i], dev))
- goto err;
- dev->interrupts[i] = irq;
- }
-
-
- /* Resource handling is problematic as some device-trees contain
- * useless crap (ugh ugh ugh). We work around that here by calling
- * specific functions for calculating the appropriate resources.
- *
- * This will all be moved to macio_asic.c at one point
- */
- for (i = aoa_resource_i2smmio; i <= aoa_resource_rxdbdma; i++) {
- if (i2sbus_get_and_fixup_rsrc(np,i,layout,&dev->resources[i]))
- goto err;
- /* If only we could use our resource dev->resources[i]...
- * but request_resource doesn't know about parents and
- * contained resources...
- */
- dev->allocated_resource[i] =
- request_mem_region(dev->resources[i].start,
- dev->resources[i].end -
- dev->resources[i].start + 1,
- dev->rnames[i]);
- if (!dev->allocated_resource[i]) {
- printk(KERN_ERR "i2sbus: failed to claim resource %d!\n", i);
- goto err;
- }
- }
-
- r = &dev->resources[aoa_resource_i2smmio];
- rlen = r->end - r->start + 1;
- if (rlen < sizeof(struct i2s_interface_regs))
- goto err;
- dev->intfregs = ioremap(r->start, rlen);
-
- r = &dev->resources[aoa_resource_txdbdma];
- rlen = r->end - r->start + 1;
- if (rlen < sizeof(struct dbdma_regs))
- goto err;
- dev->out.dbdma = ioremap(r->start, rlen);
-
- r = &dev->resources[aoa_resource_rxdbdma];
- rlen = r->end - r->start + 1;
- if (rlen < sizeof(struct dbdma_regs))
- goto err;
- dev->in.dbdma = ioremap(r->start, rlen);
-
- if (!dev->intfregs || !dev->out.dbdma || !dev->in.dbdma)
- goto err;
-
- if (alloc_dbdma_descriptor_ring(dev, &dev->out.dbdma_ring,
- MAX_DBDMA_COMMANDS))
- goto err;
- if (alloc_dbdma_descriptor_ring(dev, &dev->in.dbdma_ring,
- MAX_DBDMA_COMMANDS))
- goto err;
-
- if (i2sbus_control_add_dev(dev->control, dev)) {
- printk(KERN_ERR "i2sbus: control layer didn't like bus\n");
- goto err;
- }
-
- if (soundbus_add_one(&dev->sound)) {
- printk(KERN_DEBUG "i2sbus: device registration error!\n");
- goto err;
- }
-
- /* enable this cell */
- i2sbus_control_cell(dev->control, dev, 1);
- i2sbus_control_enable(dev->control, dev);
- i2sbus_control_clock(dev->control, dev, 1);
-
- return 1;
- err:
- for (i=0;i<3;i++)
- if (dev->interrupts[i] != -1)
- free_irq(dev->interrupts[i], dev);
- free_dbdma_descriptor_ring(dev, &dev->out.dbdma_ring);
- free_dbdma_descriptor_ring(dev, &dev->in.dbdma_ring);
- if (dev->intfregs) iounmap(dev->intfregs);
- if (dev->out.dbdma) iounmap(dev->out.dbdma);
- if (dev->in.dbdma) iounmap(dev->in.dbdma);
- for (i=0;i<3;i++)
- if (dev->allocated_resource[i])
- release_and_free_resource(dev->allocated_resource[i]);
- mutex_destroy(&dev->lock);
- kfree(dev);
- return 0;
-}
-
-static int i2sbus_probe(struct macio_dev* dev, const struct of_device_id *match)
-{
- struct device_node *np = NULL;
- int got = 0, err;
- struct i2sbus_control *control = NULL;
-
- err = i2sbus_control_init(dev, &control);
- if (err)
- return err;
- if (!control) {
- printk(KERN_ERR "i2sbus_control_init API breakage\n");
- return -ENODEV;
- }
-
- while ((np = of_get_next_child(dev->ofdev.node, np))) {
- if (of_device_is_compatible(np, "i2sbus") ||
- of_device_is_compatible(np, "i2s-modem")) {
- got += i2sbus_add_dev(dev, control, np);
- }
- }
-
- if (!got) {
- /* found none, clean up */
- i2sbus_control_destroy(control);
- return -ENODEV;
- }
-
- dev->ofdev.dev.driver_data = control;
-
- return 0;
-}
-
-static int i2sbus_remove(struct macio_dev* dev)
-{
- struct i2sbus_control *control = dev->ofdev.dev.driver_data;
- struct i2sbus_dev *i2sdev, *tmp;
-
- list_for_each_entry_safe(i2sdev, tmp, &control->list, item)
- soundbus_remove_one(&i2sdev->sound);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int i2sbus_suspend(struct macio_dev* dev, pm_message_t state)
-{
- struct i2sbus_control *control = dev->ofdev.dev.driver_data;
- struct codec_info_item *cii;
- struct i2sbus_dev* i2sdev;
- int err, ret = 0;
-
- list_for_each_entry(i2sdev, &control->list, item) {
- /* Notify Alsa */
- if (i2sdev->sound.pcm) {
- /* Suspend PCM streams */
- snd_pcm_suspend_all(i2sdev->sound.pcm);
- }
-
- /* Notify codecs */
- list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
- err = 0;
- if (cii->codec->suspend)
- err = cii->codec->suspend(cii, state);
- if (err)
- ret = err;
- }
-
- /* wait until streams are stopped */
- i2sbus_wait_for_stop_both(i2sdev);
- }
-
- return ret;
-}
-
-static int i2sbus_resume(struct macio_dev* dev)
-{
- struct i2sbus_control *control = dev->ofdev.dev.driver_data;
- struct codec_info_item *cii;
- struct i2sbus_dev* i2sdev;
- int err, ret = 0;
-
- list_for_each_entry(i2sdev, &control->list, item) {
- /* reset i2s bus format etc. */
- i2sbus_pcm_prepare_both(i2sdev);
-
- /* Notify codecs so they can re-initialize */
- list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
- err = 0;
- if (cii->codec->resume)
- err = cii->codec->resume(cii);
- if (err)
- ret = err;
- }
- }
-
- return ret;
-}
-#endif /* CONFIG_PM */
-
-static int i2sbus_shutdown(struct macio_dev* dev)
-{
- return 0;
-}
-
-static struct macio_driver i2sbus_drv = {
- .name = "soundbus-i2s",
- .owner = THIS_MODULE,
- .match_table = i2sbus_match,
- .probe = i2sbus_probe,
- .remove = i2sbus_remove,
-#ifdef CONFIG_PM
- .suspend = i2sbus_suspend,
- .resume = i2sbus_resume,
-#endif
- .shutdown = i2sbus_shutdown,
-};
-
-static int __init soundbus_i2sbus_init(void)
-{
- return macio_register_driver(&i2sbus_drv);
-}
-
-static void __exit soundbus_i2sbus_exit(void)
-{
- macio_unregister_driver(&i2sbus_drv);
-}
-
-module_init(soundbus_i2sbus_init);
-module_exit(soundbus_i2sbus_exit);