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 #include <linux/device.h> 14 15 struct mcp_ops; 16 17 struct mcp { 18 struct module *owner; 19 struct mcp_ops *ops; 20 spinlock_t lock; 21 int use_count; 22 unsigned int sclk_rate; 23 unsigned int rw_timeout; 24 struct device attached_device; 25 }; 26 27 struct mcp_ops { 28 void (*set_telecom_divisor)(struct mcp *, unsigned int); 29 void (*set_audio_divisor)(struct mcp *, unsigned int); 30 void (*reg_write)(struct mcp *, unsigned int, unsigned int); 31 unsigned int (*reg_read)(struct mcp *, unsigned int); 32 void (*enable)(struct mcp *); 33 void (*disable)(struct mcp *); 34 }; 35 36 void mcp_set_telecom_divisor(struct mcp *, unsigned int); 37 void mcp_set_audio_divisor(struct mcp *, unsigned int); 38 void mcp_reg_write(struct mcp *, unsigned int, unsigned int); 39 unsigned int mcp_reg_read(struct mcp *, unsigned int); 40 void mcp_enable(struct mcp *); 41 void mcp_disable(struct mcp *); 42 #define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate) 43 44 struct mcp *mcp_host_alloc(struct device *, size_t); 45 int mcp_host_add(struct mcp *, void *); 46 void mcp_host_del(struct mcp *); 47 void mcp_host_free(struct mcp *); 48 49 struct mcp_driver { 50 struct device_driver drv; 51 int (*probe)(struct mcp *); 52 void (*remove)(struct mcp *); 53 }; 54 55 int mcp_driver_register(struct mcp_driver *); 56 void mcp_driver_unregister(struct mcp_driver *); 57 58 #define mcp_get_drvdata(mcp) dev_get_drvdata(&(mcp)->attached_device) 59 #define mcp_set_drvdata(mcp,d) dev_set_drvdata(&(mcp)->attached_device, d) 60 61 static inline void *mcp_priv(struct mcp *mcp) 62 { 63 return mcp + 1; 64 } 65 66 #endif 67