Texas Instruments TLV320AIC family of audio SoC core functionality controlled via I2C. This driver provides common support for accessing the device.
Signed-off-by: Mehar Bajwa <[email protected]> --- drivers/mfd/Kconfig | 12 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/tlv320aic-i2c.c | 98 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 111 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/tlv320aic-i2c.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3019897..40eb328 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -64,11 +64,23 @@ menu "AIC Interface Drivers" config MFD_AIC_IRQ bool "Support of IRQ for AIC" depends on MFD_AIC + default y help Say yes here if you want support of IRQ for Texas Instruments AIC codec family. You have to select individual components like codec device under the corresponding menus. + +config MFD_AIC_I2C + bool "AIC I2C Interface" + select REGMAP_I2C + depends on MFD_AIC + depends on I2C + help + Support for the Texas Instruments TLV320AIC family of audio SoC + core functionality controlled via I2C. This driver provides common + support for accessing the device, additional drivers must be enabled + in order to use the functionality of the device. endmenu config MFD_SM501 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 3b39454..1e2c96a 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_MFD_88PM800) += 88pm800.o 88pm80x.o obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o obj-$(CONFIG_MFD_AIC) += tlv320aic-core.o obj-$(CONFIG_MFD_AIC_IRQ) += tlv320aic-irq.o +obj-$(CONFIG_MFD_AIC_I2C) += tlv320aic-i2c.o obj-$(CONFIG_MFD_SM501) += sm501.o obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o diff --git a/drivers/mfd/tlv320aic-i2c.c b/drivers/mfd/tlv320aic-i2c.c new file mode 100644 index 0000000..18987b1 --- /dev/null +++ b/drivers/mfd/tlv320aic-i2c.c @@ -0,0 +1,98 @@ +/* + * tlv320aic-i2c.c -- driver for TLV320AIC Codecs Family + * + * Author: Mukund Navada <[email protected]> + * Mehar Bajwa <[email protected]> + * + * 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/kernel.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> + +#include <linux/mfd/tlv320aic-core.h> + +struct regmap_config aic_i2c_regmap = { + .reg_bits = 8, + .val_bits = 8, + .cache_type = REGCACHE_NONE, +}; + +static int aic_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct aic *aic; + const struct regmap_config *regmap_config; + int ret; + + regmap_config = &aic_i2c_regmap; + + aic = devm_kzalloc(&i2c->dev, sizeof(*aic), GFP_KERNEL); + if (aic == NULL) + return -ENOMEM; + + aic->regmap = devm_regmap_init_i2c(i2c, regmap_config); + + if (IS_ERR(aic->regmap)) { + ret = PTR_ERR(aic->regmap); + dev_err(&i2c->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + aic->type = id->driver_data; + aic->dev = &i2c->dev; + aic->irq = i2c->irq; + + return aic_device_init(aic); +} + +static int aic_i2c_remove(struct i2c_client *i2c) +{ + struct aic *aic = dev_get_drvdata(&i2c->dev); + + aic_device_exit(aic); + return 0; +} + +static const struct i2c_device_id aic_i2c_id[] = { + {"tlv320aic3262", TLV320AIC3262}, + { } +}; +MODULE_DEVICE_TABLE(i2c, aic_i2c_id); + +static struct i2c_driver aic_i2c_driver = { + .driver = { + .name = "tlv320aic", + .owner = THIS_MODULE, + }, + .probe = aic_i2c_probe, + .remove = aic_i2c_remove, + .id_table = aic_i2c_id, +}; + +module_i2c_driver(aic_i2c_driver); + +MODULE_DESCRIPTION("TLV320AIC I2C bus interface"); +MODULE_AUTHOR("Mukund Navada <[email protected]>"); +MODULE_AUTHOR("Mehar Bajwa <[email protected]>"); +MODULE_LICENSE("GPL"); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
