9e50108668
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>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/*
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* include/linux/mfd/wm8994/core.h -- Core interface for WM8994
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*
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* Copyright 2009 Wolfson Microelectronics PLC.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifndef __MFD_WM8994_CORE_H__
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#define __MFD_WM8994_CORE_H__
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struct regulator_dev;
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struct regulator_bulk_data;
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#define WM8994_NUM_GPIO_REGS 11
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#define WM8994_NUM_LDO_REGS 2
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struct wm8994 {
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struct mutex io_lock;
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struct device *dev;
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int (*read_dev)(struct wm8994 *wm8994, unsigned short reg,
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int bytes, void *dest);
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int (*write_dev)(struct wm8994 *wm8994, unsigned short reg,
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int bytes, void *src);
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void *control_data;
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int gpio_base;
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/* Used over suspend/resume */
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u16 ldo_regs[WM8994_NUM_LDO_REGS];
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u16 gpio_regs[WM8994_NUM_GPIO_REGS];
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struct regulator_dev *dbvdd;
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struct regulator_bulk_data *supplies;
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};
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/* Device I/O API */
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int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg);
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int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
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unsigned short val);
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int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
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unsigned short mask, unsigned short val);
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int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
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int count, u16 *buf);
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#endif
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