LXR linux/include/linux/mfd/mcp.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  linux/drivers/mfd/mcp.h
   4 *
   5 *  Copyright (C) 2001 Russell King, All Rights Reserved.
   6 */
   7#ifndef MCP_H
   8#define MCP_H
   9
  10#include <linux/device.h>
  11
  12struct mcp_ops;
  13
  14struct mcp {
  15        struct module   *owner;
  16        struct mcp_ops  *ops;
  17        spinlock_t      lock;
  18        int             use_count;
  19        unsigned int    sclk_rate;
  20        unsigned int    rw_timeout;
  21        struct device   attached_device;
  22};
  23
  24struct mcp_ops {
  25        void            (*set_telecom_divisor)(struct mcp *, unsigned int);
  26        void            (*set_audio_divisor)(struct mcp *, unsigned int);
  27        void            (*reg_write)(struct mcp *, unsigned int, unsigned int);
  28        unsigned int    (*reg_read)(struct mcp *, unsigned int);
  29        void            (*enable)(struct mcp *);
  30        void            (*disable)(struct mcp *);
  31};
  32
  33void mcp_set_telecom_divisor(struct mcp *, unsigned int);
  34void mcp_set_audio_divisor(struct mcp *, unsigned int);
  35void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
  36unsigned int mcp_reg_read(struct mcp *, unsigned int);
  37void mcp_enable(struct mcp *);
  38void mcp_disable(struct mcp *);
  39#define mcp_get_sclk_rate(mcp)  ((mcp)->sclk_rate)
  40
  41struct mcp *mcp_host_alloc(struct device *, size_t);
  42int mcp_host_add(struct mcp *, void *);
  43void mcp_host_del(struct mcp *);
  44void mcp_host_free(struct mcp *);
  45
  46struct mcp_driver {
  47        struct device_driver drv;
  48        int (*probe)(struct mcp *);
  49        void (*remove)(struct mcp *);
  50};
  51
  52int mcp_driver_register(struct mcp_driver *);
  53void mcp_driver_unregister(struct mcp_driver *);
  54
  55#define mcp_get_drvdata(mcp)    dev_get_drvdata(&(mcp)->attached_device)
  56#define mcp_set_drvdata(mcp,d)  dev_set_drvdata(&(mcp)->attached_device, d)
  57
  58static inline void *mcp_priv(struct mcp *mcp)
  59{
  60        return mcp + 1;
  61}
  62
  63#endif
  64