114 lines
2.8 KiB
C
114 lines
2.8 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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#include <linux/mutex.h>
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#include <linux/interrupt.h>
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enum wm8994_type {
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WM8994 = 0,
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WM8958 = 1,
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WM1811 = 2,
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};
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struct regulator_dev;
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struct regulator_bulk_data;
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struct regmap;
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#define WM8994_NUM_GPIO_REGS 11
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#define WM8994_NUM_LDO_REGS 2
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#define WM8994_NUM_IRQ_REGS 2
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#define WM8994_IRQ_TEMP_SHUT 0
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#define WM8994_IRQ_MIC1_DET 1
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#define WM8994_IRQ_MIC1_SHRT 2
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#define WM8994_IRQ_MIC2_DET 3
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#define WM8994_IRQ_MIC2_SHRT 4
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#define WM8994_IRQ_FLL1_LOCK 5
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#define WM8994_IRQ_FLL2_LOCK 6
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#define WM8994_IRQ_SRC1_LOCK 7
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#define WM8994_IRQ_SRC2_LOCK 8
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#define WM8994_IRQ_AIF1DRC1_SIG_DET 9
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#define WM8994_IRQ_AIF1DRC2_SIG_DET 10
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#define WM8994_IRQ_AIF2DRC_SIG_DET 11
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#define WM8994_IRQ_FIFOS_ERR 12
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#define WM8994_IRQ_WSEQ_DONE 13
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#define WM8994_IRQ_DCS_DONE 14
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#define WM8994_IRQ_TEMP_WARN 15
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/* GPIOs in the chip are numbered from 1-11 */
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#define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)
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struct wm8994 {
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struct mutex irq_lock;
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enum wm8994_type type;
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int revision;
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struct device *dev;
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struct regmap *regmap;
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bool ldo_ena_always_driven;
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int gpio_base;
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int irq_base;
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int irq;
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struct regmap_irq_chip_data *irq_data;
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/* Used over suspend/resume */
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bool suspended;
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struct regulator_dev *dbvdd;
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int num_supplies;
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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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int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
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int count, const u16 *buf);
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/* Helper to save on boilerplate */
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static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
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irq_handler_t handler, const char *name,
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void *data)
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{
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if (!wm8994->irq_base)
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return -EINVAL;
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return request_threaded_irq(wm8994->irq_base + irq, NULL, handler,
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IRQF_TRIGGER_RISING, name,
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data);
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}
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static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
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{
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if (!wm8994->irq_base)
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return;
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free_irq(wm8994->irq_base + irq, data);
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}
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int wm8994_irq_init(struct wm8994 *wm8994);
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void wm8994_irq_exit(struct wm8994 *wm8994);
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#endif
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