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/*
* MFD driver for aic
*
* Author: Mukund Navada <navada@ti.com>
* Mehar Bajwa <mehar.bajwa@ti.com>
*
* 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
*
*/
#ifndef __MFD_AIC3XXX_CORE_H__
#define __MFD_AIC3XXX_CORE_H__
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/irqdomain.h>
enum aic325x_type {
TLV320AIC3262 = 0,
TLV320AIC3266 = 1,
TLV320AIC3256 = 2,
};
#define AIC3XXX_IRQ_HEADSET_DETECT 0
#define AIC3XXX_IRQ_BUTTON_PRESS 1
#define AIC3XXX_IRQ_DAC_DRC 2
#define AIC3XXX_IRQ_AGC_NOISE 3
#define AIC3XXX_IRQ_OVER_CURRENT 4
#define AIC3XXX_IRQ_OVERFLOW_EVENT 5
#define AIC3XXX_IRQ_SPEAKER_OVER_TEMP 6
union aic325x_reg_union {
struct aic325x_reg {
u8 offset;
u8 page;
u8 book;
u8 reserved;
} aic325x_register;
unsigned int aic325x_register_int;
};
/**************************** ************************************/
/**
* Platform data for aic325x family device.
*
* @audio_mclk1: MCLK1 frequency in Hz
* @audio_mclk2: MCLK2 frequency in Hz
* @gpio_irq: whether AIC3262 interrupts the host AP on a GPIO pin
* of AP
* @gpio_reset: is the codec being reset by a gpio [host] pin,
* if yes provide the number.
* @num_gpios: number of gpio pins on this device
* @gpio_defaults: all gpio configuration
* @naudint_irq: audio interrupt number
* @irq_base: base of chained interrupt handler
*/
struct aic325x_pdata {
unsigned int audio_mclk1;
unsigned int audio_mclk2;
unsigned int gpio_irq; /* whether AIC3256 interrupts the host AP on */
/* a GPIO pin of AP */
unsigned int gpio_reset;/* is the codec being reset by a gpio*/
/* [host] pin, if yes provide the number. */
struct aic325x_gpio_setup *gpio_defaults;/* all gpio configuration */
int naudint_irq; /* audio interrupt */
int num_gpios;
unsigned int irq_base;
};
struct aic325x {
struct mutex io_lock;
struct mutex irq_lock;
enum aic325x_type type;
struct device *dev;
struct regmap *regmap;
struct aic325x_pdata pdata;
void *control_data;
unsigned int irq;
unsigned int irq_base;
struct irq_domain *domain;
u8 irq_masks_cur;
u8 irq_masks_cache;
/* Used over suspend/resume */
bool suspended;
u8 book_no;
u8 page_no;
};
struct aic325x_gpio_setup {
unsigned int reg; /* if GPIO is input,
register to write the mask. */
u8 value; /* value to be written
gpio_control_reg if GPIO */
/* is output, in_reg if its input */
};
static inline int aic325x_request_irq(struct aic325x *aic325x, int irq,
irq_handler_t handler,
unsigned long irqflags, const char *name,
void *data)
{
irq = irq_create_mapping(aic325x->domain, irq);
if (irq < 0) {
dev_err(aic325x->dev,
"Mapping hardware interrupt failed %d\n", irq);
return irq;
}
return request_threaded_irq(irq, NULL, handler,
irqflags, name, data);
}
static inline int aic325x_free_irq(struct aic325x *aic325x, int irq, void *data)
{
if (!aic325x->irq_base)
return -EINVAL;
free_irq(aic325x->irq_base + irq, data);
return 0;
}
/* Device I/O API */
int aic325x_reg_read(struct aic325x *aic325x, unsigned int reg);
int aic325x_reg_write(struct aic325x *aic325x, unsigned int reg,
unsigned char val);
int aic325x_set_bits(struct aic325x *aic325x, unsigned int reg,
unsigned char mask, unsigned char val);
int aic325x_bulk_read(struct aic325x *aic325x, unsigned int reg,
int count, u8 *buf);
int aic325x_bulk_write(struct aic325x *aic325x, unsigned int reg,
int count, const u8 *buf);
int aic325x_wait_bits(struct aic325x *aic325x, unsigned int reg,
unsigned char mask, unsigned char val, int delay,
int counter);
int aic325x_irq_init(struct aic325x *aic325x);
void aic325x_irq_exit(struct aic325x *aic325x);
int aic325x_device_init(struct aic325x *aic325x);
void aic325x_device_exit(struct aic325x *aic325x);
#endif /* End of __MFD_AIC3XXX_CORE_H__ */
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