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Diffstat (limited to 'drivers/staging/bcm2835-audio/bcm2835.c')
-rw-r--r--drivers/staging/bcm2835-audio/bcm2835.c250
1 files changed, 0 insertions, 250 deletions
diff --git a/drivers/staging/bcm2835-audio/bcm2835.c b/drivers/staging/bcm2835-audio/bcm2835.c
deleted file mode 100644
index 3a5e528..0000000
--- a/drivers/staging/bcm2835-audio/bcm2835.c
+++ /dev/null
@@ -1,250 +0,0 @@
-/*****************************************************************************
- * Copyright 2011 Broadcom Corporation. All rights reserved.
- *
- * Unless you and Broadcom execute a separate written software license
- * agreement governing use of this software, this software is licensed to you
- * under the terms of the GNU General Public License version 2, available at
- * http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
- *
- * Notwithstanding the above, under no circumstances may you combine this
- * software in any way with any other Broadcom software provided under a
- * license other than the GPL, without Broadcom's express prior written
- * consent.
- *****************************************************************************/
-
-#include <linux/platform_device.h>
-
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/of.h>
-
-#include "bcm2835.h"
-
-/* HACKY global pointers needed for successive probes to work : ssp
- * But compared against the changes we will have to do in VC audio_ipc code
- * to export 8 audio_ipc devices as a single IPC device and then monitor all
- * four devices in a thread, this gets things done quickly and should be easier
- * to debug if we run into issues
- */
-
-static struct snd_card *g_card;
-static struct bcm2835_chip *g_chip;
-
-static int snd_bcm2835_free(struct bcm2835_chip *chip)
-{
- kfree(chip);
- return 0;
-}
-
-/* component-destructor
- * (see "Management of Cards and Components")
- */
-static int snd_bcm2835_dev_free(struct snd_device *device)
-{
- return snd_bcm2835_free(device->device_data);
-}
-
-/* chip-specific constructor
- * (see "Management of Cards and Components")
- */
-static int snd_bcm2835_create(struct snd_card *card,
- struct platform_device *pdev,
- struct bcm2835_chip **rchip)
-{
- struct bcm2835_chip *chip;
- int err;
- static struct snd_device_ops ops = {
- .dev_free = snd_bcm2835_dev_free,
- };
-
- *rchip = NULL;
-
- chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
-
- chip->card = card;
-
- err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
- if (err < 0) {
- snd_bcm2835_free(chip);
- return err;
- }
-
- *rchip = chip;
- return 0;
-}
-
-static int snd_bcm2835_alsa_probe_dt(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct bcm2835_chip *chip;
- struct snd_card *card;
- u32 numchans;
- int err, i;
-
- err = of_property_read_u32(dev->of_node, "brcm,pwm-channels",
- &numchans);
- if (err) {
- dev_err(dev, "Failed to get DT property 'brcm,pwm-channels'");
- return err;
- }
-
- if (numchans == 0 || numchans > MAX_SUBSTREAMS) {
- numchans = MAX_SUBSTREAMS;
- dev_warn(dev, "Illegal 'brcm,pwm-channels' value, will use %u\n",
- numchans);
- }
-
- err = snd_card_new(&pdev->dev, -1, NULL, THIS_MODULE, 0, &card);
- if (err) {
- dev_err(dev, "Failed to create soundcard structure\n");
- return err;
- }
-
- snd_card_set_dev(card, dev);
- strcpy(card->driver, "bcm2835");
- strcpy(card->shortname, "bcm2835 ALSA");
- sprintf(card->longname, "%s", card->shortname);
-
- err = snd_bcm2835_create(card, pdev, &chip);
- if (err < 0) {
- dev_err(dev, "Failed to create bcm2835 chip\n");
- goto err_free;
- }
-
- err = snd_bcm2835_new_pcm(chip);
- if (err < 0) {
- dev_err(dev, "Failed to create new bcm2835 pcm device\n");
- goto err_free;
- }
-
- err = snd_bcm2835_new_spdif_pcm(chip);
- if (err < 0) {
- dev_err(dev, "Failed to create new bcm2835 spdif pcm device\n");
- goto err_free;
- }
-
- err = snd_bcm2835_new_ctl(chip);
- if (err < 0) {
- dev_err(dev, "Failed to create new bcm2835 ctl\n");
- goto err_free;
- }
-
- for (i = 0; i < numchans; i++) {
- chip->avail_substreams |= (1 << i);
- chip->pdev[i] = pdev;
- }
-
- err = snd_card_register(card);
- if (err) {
- dev_err(dev, "Failed to register bcm2835 ALSA card\n");
- goto err_free;
- }
-
- g_card = card;
- g_chip = chip;
- platform_set_drvdata(pdev, card);
- audio_info("bcm2835 ALSA card created with %u channels\n", numchans);
-
- return 0;
-
-err_free:
- snd_card_free(card);
-
- return err;
-}
-
-static int snd_bcm2835_alsa_remove(struct platform_device *pdev)
-{
- int idx;
- void *drv_data;
-
- drv_data = platform_get_drvdata(pdev);
-
- if (drv_data == (void *)g_card) {
- /* This is the card device */
- snd_card_free((struct snd_card *)drv_data);
- g_card = NULL;
- g_chip = NULL;
- } else {
- idx = (int)(long)drv_data;
- if (g_card) {
- BUG_ON(!g_chip);
- /* We pass chip device numbers in audio ipc devices
- * other than the one we registered our card with
- */
- idx = (int)(long)drv_data;
- BUG_ON(!idx || idx > MAX_SUBSTREAMS);
- g_chip->avail_substreams &= ~(1 << idx);
- /* There should be atleast one substream registered
- * after we are done here, as it wil be removed when
- * the *remove* is called for the card device
- */
- BUG_ON(!g_chip->avail_substreams);
- }
- }
-
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int snd_bcm2835_alsa_suspend(struct platform_device *pdev,
- pm_message_t state)
-{
- return 0;
-}
-
-static int snd_bcm2835_alsa_resume(struct platform_device *pdev)
-{
- return 0;
-}
-
-#endif
-
-static const struct of_device_id snd_bcm2835_of_match_table[] = {
- { .compatible = "brcm,bcm2835-audio",},
- {},
-};
-MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table);
-
-static struct platform_driver bcm2835_alsa0_driver = {
- .probe = snd_bcm2835_alsa_probe_dt,
- .remove = snd_bcm2835_alsa_remove,
-#ifdef CONFIG_PM
- .suspend = snd_bcm2835_alsa_suspend,
- .resume = snd_bcm2835_alsa_resume,
-#endif
- .driver = {
- .name = "bcm2835_AUD0",
- .owner = THIS_MODULE,
- .of_match_table = snd_bcm2835_of_match_table,
- },
-};
-
-static int bcm2835_alsa_device_init(void)
-{
- int retval;
-
- retval = platform_driver_register(&bcm2835_alsa0_driver);
- if (retval)
- pr_err("Error registering bcm2835_alsa0_driver %d .\n", retval);
-
- return retval;
-}
-
-static void bcm2835_alsa_device_exit(void)
-{
- platform_driver_unregister(&bcm2835_alsa0_driver);
-}
-
-late_initcall(bcm2835_alsa_device_init);
-module_exit(bcm2835_alsa_device_exit);
-
-MODULE_AUTHOR("Dom Cobley");
-MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
-MODULE_LICENSE("GPL");
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