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path: root/drivers/mfd/twl4030-audio.c
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Diffstat (limited to 'drivers/mfd/twl4030-audio.c')
-rw-r--r--drivers/mfd/twl4030-audio.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/drivers/mfd/twl4030-audio.c b/drivers/mfd/twl4030-audio.c
deleted file mode 100644
index ae51ab5d0e5..00000000000
--- a/drivers/mfd/twl4030-audio.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * MFD driver for twl4030 audio submodule, which contains an audio codec, and
- * the vibra control.
- *
- * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
- *
- * Copyright: (C) 2009 Nokia Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/platform_device.h>
-#include <linux/i2c/twl.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/twl4030-audio.h>
-
-#define TWL4030_AUDIO_CELLS 2
-
-static struct platform_device *twl4030_audio_dev;
-
-struct twl4030_audio_resource {
- int request_count;
- u8 reg;
- u8 mask;
-};
-
-struct twl4030_audio {
- unsigned int audio_mclk;
- struct mutex mutex;
- struct twl4030_audio_resource resource[TWL4030_AUDIO_RES_MAX];
- struct mfd_cell cells[TWL4030_AUDIO_CELLS];
-};
-
-/*
- * Modify the resource, the function returns the content of the register
- * after the modification.
- */
-static int twl4030_audio_set_resource(enum twl4030_audio_res id, int enable)
-{
- struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev);
- u8 val;
-
- twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val,
- audio->resource[id].reg);
-
- if (enable)
- val |= audio->resource[id].mask;
- else
- val &= ~audio->resource[id].mask;
-
- twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
- val, audio->resource[id].reg);
-
- return val;
-}
-
-static inline int twl4030_audio_get_resource(enum twl4030_audio_res id)
-{
- struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev);
- u8 val;
-
- twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val,
- audio->resource[id].reg);
-
- return val;
-}
-
-/*
- * Enable the resource.
- * The function returns with error or the content of the register
- */
-int twl4030_audio_enable_resource(enum twl4030_audio_res id)
-{
- struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev);
- int val;
-
- if (id >= TWL4030_AUDIO_RES_MAX) {
- dev_err(&twl4030_audio_dev->dev,
- "Invalid resource ID (%u)\n", id);
- return -EINVAL;
- }
-
- mutex_lock(&audio->mutex);
- if (!audio->resource[id].request_count)
- /* Resource was disabled, enable it */
- val = twl4030_audio_set_resource(id, 1);
- else
- val = twl4030_audio_get_resource(id);
-
- audio->resource[id].request_count++;
- mutex_unlock(&audio->mutex);
-
- return val;
-}
-EXPORT_SYMBOL_GPL(twl4030_audio_enable_resource);
-
-/*
- * Disable the resource.
- * The function returns with error or the content of the register
- */
-int twl4030_audio_disable_resource(unsigned id)
-{
- struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev);
- int val;
-
- if (id >= TWL4030_AUDIO_RES_MAX) {
- dev_err(&twl4030_audio_dev->dev,
- "Invalid resource ID (%u)\n", id);
- return -EINVAL;
- }
-
- mutex_lock(&audio->mutex);
- if (!audio->resource[id].request_count) {
- dev_err(&twl4030_audio_dev->dev,
- "Resource has been disabled already (%u)\n", id);
- mutex_unlock(&audio->mutex);
- return -EPERM;
- }
- audio->resource[id].request_count--;
-
- if (!audio->resource[id].request_count)
- /* Resource can be disabled now */
- val = twl4030_audio_set_resource(id, 0);
- else
- val = twl4030_audio_get_resource(id);
-
- mutex_unlock(&audio->mutex);
-
- return val;
-}
-EXPORT_SYMBOL_GPL(twl4030_audio_disable_resource);
-
-unsigned int twl4030_audio_get_mclk(void)
-{
- struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev);
-
- return audio->audio_mclk;
-}
-EXPORT_SYMBOL_GPL(twl4030_audio_get_mclk);
-
-static int __devinit twl4030_audio_probe(struct platform_device *pdev)
-{
- struct twl4030_audio *audio;
- struct twl4030_audio_data *pdata = pdev->dev.platform_data;
- struct mfd_cell *cell = NULL;
- int ret, childs = 0;
- u8 val;
-
- if (!pdata) {
- dev_err(&pdev->dev, "Platform data is missing\n");
- return -EINVAL;
- }
-
- /* Configure APLL_INFREQ and disable APLL if enabled */
- val = 0;
- switch (pdata->audio_mclk) {
- case 19200000:
- val |= TWL4030_APLL_INFREQ_19200KHZ;
- break;
- case 26000000:
- val |= TWL4030_APLL_INFREQ_26000KHZ;
- break;
- case 38400000:
- val |= TWL4030_APLL_INFREQ_38400KHZ;
- break;
- default:
- dev_err(&pdev->dev, "Invalid audio_mclk\n");
- return -EINVAL;
- }
- twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
- val, TWL4030_REG_APLL_CTL);
-
- audio = kzalloc(sizeof(struct twl4030_audio), GFP_KERNEL);
- if (!audio)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, audio);
-
- twl4030_audio_dev = pdev;
- mutex_init(&audio->mutex);
- audio->audio_mclk = pdata->audio_mclk;
-
- /* Codec power */
- audio->resource[TWL4030_AUDIO_RES_POWER].reg = TWL4030_REG_CODEC_MODE;
- audio->resource[TWL4030_AUDIO_RES_POWER].mask = TWL4030_CODECPDZ;
-
- /* PLL */
- audio->resource[TWL4030_AUDIO_RES_APLL].reg = TWL4030_REG_APLL_CTL;
- audio->resource[TWL4030_AUDIO_RES_APLL].mask = TWL4030_APLL_EN;
-
- if (pdata->codec) {
- cell = &audio->cells[childs];
- cell->name = "twl4030-codec";
- cell->platform_data = pdata->codec;
- cell->pdata_size = sizeof(*pdata->codec);
- childs++;
- }
- if (pdata->vibra) {
- cell = &audio->cells[childs];
- cell->name = "twl4030-vibra";
- cell->platform_data = pdata->vibra;
- cell->pdata_size = sizeof(*pdata->vibra);
- childs++;
- }
-
- if (childs)
- ret = mfd_add_devices(&pdev->dev, pdev->id, audio->cells,
- childs, NULL, 0);
- else {
- dev_err(&pdev->dev, "No platform data found for childs\n");
- ret = -ENODEV;
- }
-
- if (!ret)
- return 0;
-
- platform_set_drvdata(pdev, NULL);
- kfree(audio);
- twl4030_audio_dev = NULL;
- return ret;
-}
-
-static int __devexit twl4030_audio_remove(struct platform_device *pdev)
-{
- struct twl4030_audio *audio = platform_get_drvdata(pdev);
-
- mfd_remove_devices(&pdev->dev);
- platform_set_drvdata(pdev, NULL);
- kfree(audio);
- twl4030_audio_dev = NULL;
-
- return 0;
-}
-
-MODULE_ALIAS("platform:twl4030-audio");
-
-static struct platform_driver twl4030_audio_driver = {
- .probe = twl4030_audio_probe,
- .remove = __devexit_p(twl4030_audio_remove),
- .driver = {
- .owner = THIS_MODULE,
- .name = "twl4030-audio",
- },
-};
-
-static int __devinit twl4030_audio_init(void)
-{
- return platform_driver_register(&twl4030_audio_driver);
-}
-module_init(twl4030_audio_init);
-
-static void __devexit twl4030_audio_exit(void)
-{
- platform_driver_unregister(&twl4030_audio_driver);
-}
-module_exit(twl4030_audio_exit);
-
-MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-30 00:36:15 +0000