1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * include/linux/mmc/sdio_func.h 4 * 5 * Copyright 2007-2008 Pierre Ossman 6 */ 7 8 #ifndef LINUX_MMC_SDIO_FUNC_H 9 #define LINUX_MMC_SDIO_FUNC_H 10 11 #include <linux/device.h> 12 #include <linux/mod_devicetable.h> 13 14 #include <linux/mmc/pm.h> 15 16 struct mmc_card; 17 struct sdio_func; 18 19 typedef void (sdio_irq_handler_t)(struct sdio_func *); 20 21 /* 22 * SDIO function CIS tuple (unknown to the core) 23 */ 24 struct sdio_func_tuple { 25 struct sdio_func_tuple *next; 26 unsigned char code; 27 unsigned char size; 28 unsigned char data[0]; 29 }; 30 31 /* 32 * SDIO function devices 33 */ 34 struct sdio_func { 35 struct mmc_card *card; /* the card this device belongs to */ 36 struct device dev; /* the device */ 37 sdio_irq_handler_t *irq_handler; /* IRQ callback */ 38 unsigned int num; /* function number */ 39 40 unsigned char class; /* standard interface class */ 41 unsigned short vendor; /* vendor id */ 42 unsigned short device; /* device id */ 43 44 unsigned max_blksize; /* maximum block size */ 45 unsigned cur_blksize; /* current block size */ 46 47 unsigned enable_timeout; /* max enable timeout in msec */ 48 49 unsigned int state; /* function state */ 50 #define SDIO_STATE_PRESENT (1<<0) /* present in sysfs */ 51 52 u8 *tmpbuf; /* DMA:able scratch buffer */ 53 54 unsigned num_info; /* number of info strings */ 55 const char **info; /* info strings */ 56 57 struct sdio_func_tuple *tuples; 58 }; 59 60 #define sdio_func_present(f) ((f)->state & SDIO_STATE_PRESENT) 61 62 #define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT) 63 64 #define sdio_func_id(f) (dev_name(&(f)->dev)) 65 66 #define sdio_get_drvdata(f) dev_get_drvdata(&(f)->dev) 67 #define sdio_set_drvdata(f,d) dev_set_drvdata(&(f)->dev, d) 68 #define dev_to_sdio_func(d) container_of(d, struct sdio_func, dev) 69 70 /* 71 * SDIO function device driver 72 */ 73 struct sdio_driver { 74 char *name; 75 const struct sdio_device_id *id_table; 76 77 int (*probe)(struct sdio_func *, const struct sdio_device_id *); 78 void (*remove)(struct sdio_func *); 79 80 struct device_driver drv; 81 }; 82 83 /** 84 * SDIO_DEVICE - macro used to describe a specific SDIO device 85 * @vend: the 16 bit manufacturer code 86 * @dev: the 16 bit function id 87 * 88 * This macro is used to create a struct sdio_device_id that matches a 89 * specific device. The class field will be set to SDIO_ANY_ID. 90 */ 91 #define SDIO_DEVICE(vend,dev) \ 92 .class = SDIO_ANY_ID, \ 93 .vendor = (vend), .device = (dev) 94 95 /** 96 * SDIO_DEVICE_CLASS - macro used to describe a specific SDIO device class 97 * @dev_class: the 8 bit standard interface code 98 * 99 * This macro is used to create a struct sdio_device_id that matches a 100 * specific standard SDIO function type. The vendor and device fields will 101 * be set to SDIO_ANY_ID. 102 */ 103 #define SDIO_DEVICE_CLASS(dev_class) \ 104 .class = (dev_class), \ 105 .vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID 106 107 extern int sdio_register_driver(struct sdio_driver *); 108 extern void sdio_unregister_driver(struct sdio_driver *); 109 110 /** 111 * module_sdio_driver() - Helper macro for registering a SDIO driver 112 * @__sdio_driver: sdio_driver struct 113 * 114 * Helper macro for SDIO drivers which do not do anything special in module 115 * init/exit. This eliminates a lot of boilerplate. Each module may only 116 * use this macro once, and calling it replaces module_init() and module_exit() 117 */ 118 #define module_sdio_driver(__sdio_driver) \ 119 module_driver(__sdio_driver, sdio_register_driver, \ 120 sdio_unregister_driver) 121 122 /* 123 * SDIO I/O operations 124 */ 125 extern void sdio_claim_host(struct sdio_func *func); 126 extern void sdio_release_host(struct sdio_func *func); 127 128 extern int sdio_enable_func(struct sdio_func *func); 129 extern int sdio_disable_func(struct sdio_func *func); 130 131 extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz); 132 133 extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler); 134 extern int sdio_release_irq(struct sdio_func *func); 135 136 extern unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz); 137 138 extern u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret); 139 extern u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret); 140 extern u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret); 141 142 extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst, 143 unsigned int addr, int count); 144 extern int sdio_readsb(struct sdio_func *func, void *dst, 145 unsigned int addr, int count); 146 147 extern void sdio_writeb(struct sdio_func *func, u8 b, 148 unsigned int addr, int *err_ret); 149 extern void sdio_writew(struct sdio_func *func, u16 b, 150 unsigned int addr, int *err_ret); 151 extern void sdio_writel(struct sdio_func *func, u32 b, 152 unsigned int addr, int *err_ret); 153 154 extern u8 sdio_writeb_readb(struct sdio_func *func, u8 write_byte, 155 unsigned int addr, int *err_ret); 156 157 extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr, 158 void *src, int count); 159 extern int sdio_writesb(struct sdio_func *func, unsigned int addr, 160 void *src, int count); 161 162 extern unsigned char sdio_f0_readb(struct sdio_func *func, 163 unsigned int addr, int *err_ret); 164 extern void sdio_f0_writeb(struct sdio_func *func, unsigned char b, 165 unsigned int addr, int *err_ret); 166 167 extern mmc_pm_flag_t sdio_get_host_pm_caps(struct sdio_func *func); 168 extern int sdio_set_host_pm_flags(struct sdio_func *func, mmc_pm_flag_t flags); 169 170 extern void sdio_retune_crc_disable(struct sdio_func *func); 171 extern void sdio_retune_crc_enable(struct sdio_func *func); 172 173 extern void sdio_retune_hold_now(struct sdio_func *func); 174 extern void sdio_retune_release(struct sdio_func *func); 175 176 #endif /* LINUX_MMC_SDIO_FUNC_H */ 177
