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mfd: Add initial WM8994 support

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The WM8994 is a highly integrated ultra low power audio hub CODEC.
Since it includes on-board regulators and GPIOs it is represented
as a multi-function device, though the overwhelming majority of
the functionality is provided by the ASoC CODEC driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown
2010-01-29 18:20:29 +00:00
committed by Samuel Ortiz
parent 1c4d3b70a4
commit 9e50108668
6 changed files with 773 additions and 0 deletions
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54
include/linux/mfd/wm8994/core.h Normal file
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/*
* include/linux/mfd/wm8994/core.h -- Core interface for WM8994
*
* Copyright 2009 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#ifndef __MFD_WM8994_CORE_H__
#define __MFD_WM8994_CORE_H__
struct regulator_dev;
struct regulator_bulk_data;
#define WM8994_NUM_GPIO_REGS 11
#define WM8994_NUM_LDO_REGS 2
struct wm8994 {
struct mutex io_lock;
struct device *dev;
int (*read_dev)(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *dest);
int (*write_dev)(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *src);
void *control_data;
int gpio_base;
/* Used over suspend/resume */
u16 ldo_regs[WM8994_NUM_LDO_REGS];
u16 gpio_regs[WM8994_NUM_GPIO_REGS];
struct regulator_dev *dbvdd;
struct regulator_bulk_data *supplies;
};
/* Device I/O API */
int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg);
int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
unsigned short val);
int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
unsigned short mask, unsigned short val);
int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf);
#endif

72
include/linux/mfd/wm8994/gpio.h Normal file
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/*
* include/linux/mfd/wm8994/gpio.h - GPIO configuration for WM8994
*
* Copyright 2009 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#ifndef __MFD_WM8994_GPIO_H__
#define __MFD_WM8994_GPIO_H__
#define WM8994_GPIO_MAX 11
#define WM8994_GP_FN_PIN_SPECIFIC 0
#define WM8994_GP_FN_GPIO 1
#define WM8994_GP_FN_SDOUT 2
#define WM8994_GP_FN_IRQ 3
#define WM8994_GP_FN_TEMPERATURE 4
#define WM8994_GP_FN_MICBIAS1_DET 5
#define WM8994_GP_FN_MICBIAS1_SHORT 6
#define WM8994_GP_FN_MICBIAS2_DET 7
#define WM8994_GP_FN_MICBIAS2_SHORT 8
#define WM8994_GP_FN_FLL1_LOCK 9
#define WM8994_GP_FN_FLL2_LOCK 10
#define WM8994_GP_FN_SRC1_LOCK 11
#define WM8994_GP_FN_SRC2_LOCK 12
#define WM8994_GP_FN_DRC1_ACT 13
#define WM8994_GP_FN_DRC2_ACT 14
#define WM8994_GP_FN_DRC3_ACT 15
#define WM8994_GP_FN_WSEQ_STATUS 16
#define WM8994_GP_FN_FIFO_ERROR 17
#define WM8994_GP_FN_OPCLK 18
#define WM8994_GPN_DIR 0x8000 /* GPN_DIR */
#define WM8994_GPN_DIR_MASK 0x8000 /* GPN_DIR */
#define WM8994_GPN_DIR_SHIFT 15 /* GPN_DIR */
#define WM8994_GPN_DIR_WIDTH 1 /* GPN_DIR */
#define WM8994_GPN_PU 0x4000 /* GPN_PU */
#define WM8994_GPN_PU_MASK 0x4000 /* GPN_PU */
#define WM8994_GPN_PU_SHIFT 14 /* GPN_PU */
#define WM8994_GPN_PU_WIDTH 1 /* GPN_PU */
#define WM8994_GPN_PD 0x2000 /* GPN_PD */
#define WM8994_GPN_PD_MASK 0x2000 /* GPN_PD */
#define WM8994_GPN_PD_SHIFT 13 /* GPN_PD */
#define WM8994_GPN_PD_WIDTH 1 /* GPN_PD */
#define WM8994_GPN_POL 0x0400 /* GPN_POL */
#define WM8994_GPN_POL_MASK 0x0400 /* GPN_POL */
#define WM8994_GPN_POL_SHIFT 10 /* GPN_POL */
#define WM8994_GPN_POL_WIDTH 1 /* GPN_POL */
#define WM8994_GPN_OP_CFG 0x0200 /* GPN_OP_CFG */
#define WM8994_GPN_OP_CFG_MASK 0x0200 /* GPN_OP_CFG */
#define WM8994_GPN_OP_CFG_SHIFT 9 /* GPN_OP_CFG */
#define WM8994_GPN_OP_CFG_WIDTH 1 /* GPN_OP_CFG */
#define WM8994_GPN_DB 0x0100 /* GPN_DB */
#define WM8994_GPN_DB_MASK 0x0100 /* GPN_DB */
#define WM8994_GPN_DB_SHIFT 8 /* GPN_DB */
#define WM8994_GPN_DB_WIDTH 1 /* GPN_DB */
#define WM8994_GPN_LVL 0x0040 /* GPN_LVL */
#define WM8994_GPN_LVL_MASK 0x0040 /* GPN_LVL */
#define WM8994_GPN_LVL_SHIFT 6 /* GPN_LVL */
#define WM8994_GPN_LVL_WIDTH 1 /* GPN_LVL */
#define WM8994_GPN_FN_MASK 0x001F /* GPN_FN - [4:0] */
#define WM8994_GPN_FN_SHIFT 0 /* GPN_FN - [4:0] */
#define WM8994_GPN_FN_WIDTH 5 /* GPN_FN - [4:0] */
#endif

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include/linux/mfd/wm8994/pdata.h Normal file
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/*
* include/linux/mfd/wm8994/pdata.h -- Platform data for WM8994
*
* Copyright 2009 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#ifndef __MFD_WM8994_PDATA_H__
#define __MFD_WM8994_PDATA_H__
#define WM8994_NUM_LDO 2
#define WM8994_NUM_GPIO 11
struct wm8994_ldo_pdata {
/** GPIOs to enable regulator, 0 or less if not available */
int enable;
const char *supply;
struct regulator_init_data *init_data;
};
#define WM8994_CONFIGURE_GPIO 0x8000
#define WM8994_DRC_REGS 5
#define WM8994_EQ_REGS 19
/**
* DRC configurations are specified with a label and a set of register
* values to write (the enable bits will be ignored). At runtime an
* enumerated control will be presented for each DRC block allowing
* the user to choose the configration to use.
*
* Configurations may be generated by hand or by using the DRC control
* panel provided by the WISCE - see http://www.wolfsonmicro.com/wisce/
* for details.
*/
struct wm8994_drc_cfg {
const char *name;
u16 regs[WM8994_DRC_REGS];
};
/**
* ReTune Mobile configurations are specified with a label, sample
* rate and set of values to write (the enable bits will be ignored).
*
* Configurations are expected to be generated using the ReTune Mobile
* control panel in WISCE - see http://www.wolfsonmicro.com/wisce/
*/
struct wm8994_retune_mobile_cfg {
const char *name;
unsigned int rate;
u16 regs[WM8994_EQ_REGS];
};
struct wm8994_pdata {
int gpio_base;
/**
* Default values for GPIOs if non-zero, WM8994_CONFIGURE_GPIO
* can be used for all zero values.
*/
int gpio_defaults[WM8994_NUM_GPIO];
struct wm8994_ldo_pdata ldo[WM8994_NUM_LDO];
int num_drc_cfgs;
struct wm8994_drc_cfg *drc_cfgs;
int num_retune_mobile_cfgs;
struct wm8994_retune_mobile_cfg *retune_mobile_cfgs;
/* LINEOUT can be differential or single ended */
unsigned int lineout1_diff:1;
unsigned int lineout2_diff:1;
/* Common mode feedback */
unsigned int lineout1fb:1;
unsigned int lineout2fb:1;
/* Microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */
unsigned int micbias1_lvl:1;
unsigned int micbias2_lvl:1;
/* Jack detect threashold levels, see datasheet for values */
unsigned int jd_scthr:2;
unsigned int jd_thr:2;
};
#endif