1 /* 2 * linux/drivers/mfd/mcp.h 3 * 4 * Copyright (C) 2001 Russell King, All Rights Reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License. 9 */ 10 #ifndef MCP_H 11 #define MCP_H 12 13 struct mcp_ops; 14 15 struct mcp { 16 struct module *owner; 17 struct mcp_ops *ops; 18 spinlock_t lock; 19 int use_count; 20 unsigned int sclk_rate; 21 unsigned int rw_timeout; 22 struct device attached_device; 23 }; 24 25 struct mcp_ops { 26 void (*set_telecom_divisor)(struct mcp *, unsigned int); 27 void (*set_audio_divisor)(struct mcp *, unsigned int); 28 void (*reg_write)(struct mcp *, unsigned int, unsigned int); 29 unsigned int (*reg_read)(struct mcp *, unsigned int); 30 void (*enable)(struct mcp *); 31 void (*disable)(struct mcp *); 32 }; 33 34 void mcp_set_telecom_divisor(struct mcp *, unsigned int); 35 void mcp_set_audio_divisor(struct mcp *, unsigned int); 36 void mcp_reg_write(struct mcp *, unsigned int, unsigned int); 37 unsigned int mcp_reg_read(struct mcp *, unsigned int); 38 void mcp_enable(struct mcp *); 39 void mcp_disable(struct mcp *); 40 #define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate) 41 42 struct mcp *mcp_host_alloc(struct device *, size_t); 43 int mcp_host_add(struct mcp *, void *); 44 void mcp_host_del(struct mcp *); 45 void mcp_host_free(struct mcp *); 46 47 struct mcp_driver { 48 struct device_driver drv; 49 int (*probe)(struct mcp *); 50 void (*remove)(struct mcp *); 51 }; 52 53 int mcp_driver_register(struct mcp_driver *); 54 void mcp_driver_unregister(struct mcp_driver *); 55 56 #define mcp_get_drvdata(mcp) dev_get_drvdata(&(mcp)->attached_device) 57 #define mcp_set_drvdata(mcp,d) dev_set_drvdata(&(mcp)->attached_device, d) 58 59 static inline void *mcp_priv(struct mcp *mcp) 60 { 61 return mcp + 1; 62 } 63 64 #endif 65