diff options
Diffstat (limited to 'drivers/mfd/twl4030-codec.c')
| -rw-r--r-- | drivers/mfd/twl4030-codec.c | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/drivers/mfd/twl4030-codec.c b/drivers/mfd/twl4030-codec.c deleted file mode 100644 index 2bf4136464c1..000000000000 --- a/drivers/mfd/twl4030-codec.c +++ /dev/null @@ -1,277 +0,0 @@ -/* - * MFD driver for twl4030 codec submodule - * - * 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-codec.h> - -#define TWL4030_CODEC_CELLS 2 - -static struct platform_device *twl4030_codec_dev; - -struct twl4030_codec_resource { - int request_count; - u8 reg; - u8 mask; -}; - -struct twl4030_codec { - unsigned int audio_mclk; - struct mutex mutex; - struct twl4030_codec_resource resource[TWL4030_CODEC_RES_MAX]; - struct mfd_cell cells[TWL4030_CODEC_CELLS]; -}; - -/* - * Modify the resource, the function returns the content of the register - * after the modification. - */ -static int twl4030_codec_set_resource(enum twl4030_codec_res id, int enable) -{ - struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev); - u8 val; - - twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val, - codec->resource[id].reg); - - if (enable) - val |= codec->resource[id].mask; - else - val &= ~codec->resource[id].mask; - - twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, - val, codec->resource[id].reg); - - return val; -} - -static inline int twl4030_codec_get_resource(enum twl4030_codec_res id) -{ - struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev); - u8 val; - - twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val, - codec->resource[id].reg); - - return val; -} - -/* - * Enable the resource. - * The function returns with error or the content of the register - */ -int twl4030_codec_enable_resource(enum twl4030_codec_res id) -{ - struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev); - int val; - - if (id >= TWL4030_CODEC_RES_MAX) { - dev_err(&twl4030_codec_dev->dev, - "Invalid resource ID (%u)\n", id); - return -EINVAL; - } - - mutex_lock(&codec->mutex); - if (!codec->resource[id].request_count) - /* Resource was disabled, enable it */ - val = twl4030_codec_set_resource(id, 1); - else - val = twl4030_codec_get_resource(id); - - codec->resource[id].request_count++; - mutex_unlock(&codec->mutex); - - return val; -} -EXPORT_SYMBOL_GPL(twl4030_codec_enable_resource); - -/* - * Disable the resource. - * The function returns with error or the content of the register - */ -int twl4030_codec_disable_resource(unsigned id) -{ - struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev); - int val; - - if (id >= TWL4030_CODEC_RES_MAX) { - dev_err(&twl4030_codec_dev->dev, - "Invalid resource ID (%u)\n", id); - return -EINVAL; - } - - mutex_lock(&codec->mutex); - if (!codec->resource[id].request_count) { - dev_err(&twl4030_codec_dev->dev, - "Resource has been disabled already (%u)\n", id); - mutex_unlock(&codec->mutex); - return -EPERM; - } - codec->resource[id].request_count--; - - if (!codec->resource[id].request_count) - /* Resource can be disabled now */ - val = twl4030_codec_set_resource(id, 0); - else - val = twl4030_codec_get_resource(id); - - mutex_unlock(&codec->mutex); - - return val; -} -EXPORT_SYMBOL_GPL(twl4030_codec_disable_resource); - -unsigned int twl4030_codec_get_mclk(void) -{ - struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev); - - return codec->audio_mclk; -} -EXPORT_SYMBOL_GPL(twl4030_codec_get_mclk); - -static int __devinit twl4030_codec_probe(struct platform_device *pdev) -{ - struct twl4030_codec *codec; - struct twl4030_codec_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); - - codec = kzalloc(sizeof(struct twl4030_codec), GFP_KERNEL); - if (!codec) - return -ENOMEM; - - platform_set_drvdata(pdev, codec); - - twl4030_codec_dev = pdev; - mutex_init(&codec->mutex); - codec->audio_mclk = pdata->audio_mclk; - - /* Codec power */ - codec->resource[TWL4030_CODEC_RES_POWER].reg = TWL4030_REG_CODEC_MODE; - codec->resource[TWL4030_CODEC_RES_POWER].mask = TWL4030_CODECPDZ; - - /* PLL */ - codec->resource[TWL4030_CODEC_RES_APLL].reg = TWL4030_REG_APLL_CTL; - codec->resource[TWL4030_CODEC_RES_APLL].mask = TWL4030_APLL_EN; - - if (pdata->audio) { - cell = &codec->cells[childs]; - cell->name = "twl4030-codec"; - cell->platform_data = pdata->audio; - cell->pdata_size = sizeof(*pdata->audio); - childs++; - } - if (pdata->vibra) { - cell = &codec->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, codec->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(codec); - twl4030_codec_dev = NULL; - return ret; -} - -static int __devexit twl4030_codec_remove(struct platform_device *pdev) -{ - struct twl4030_codec *codec = platform_get_drvdata(pdev); - - mfd_remove_devices(&pdev->dev); - platform_set_drvdata(pdev, NULL); - kfree(codec); - twl4030_codec_dev = NULL; - - return 0; -} - -MODULE_ALIAS("platform:twl4030-audio"); - -static struct platform_driver twl4030_codec_driver = { - .probe = twl4030_codec_probe, - .remove = __devexit_p(twl4030_codec_remove), - .driver = { - .owner = THIS_MODULE, - .name = "twl4030-audio", - }, -}; - -static int __devinit twl4030_codec_init(void) -{ - return platform_driver_register(&twl4030_codec_driver); -} -module_init(twl4030_codec_init); - -static void __devexit twl4030_codec_exit(void) -{ - platform_driver_unregister(&twl4030_codec_driver); -} -module_exit(twl4030_codec_exit); - -MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); -MODULE_LICENSE("GPL"); - |
