diff --git a/MAINTAINERS b/MAINTAINERS index 2dc114b9e7f7..2461e78b173f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13790,6 +13790,7 @@ M: Evgeniy Polyakov S: Maintained F: Documentation/w1/ F: drivers/w1/ +F: include/linux/w1.h W83791D HARDWARE MONITORING DRIVER M: Marc Hulsman diff --git a/drivers/power/supply/ds2760_battery.c b/drivers/power/supply/ds2760_battery.c index 17225689e3f6..ae180dc929c9 100644 --- a/drivers/power/supply/ds2760_battery.c +++ b/drivers/power/supply/ds2760_battery.c @@ -28,7 +28,7 @@ #include #include -#include "../../w1/w1.h" +#include #include "../../w1/slaves/w1_ds2760.h" struct ds2760_device_info { diff --git a/drivers/power/supply/ds2780_battery.c b/drivers/power/supply/ds2780_battery.c index 1b3b6fa89c28..8edd4aa5f475 100644 --- a/drivers/power/supply/ds2780_battery.c +++ b/drivers/power/supply/ds2780_battery.c @@ -21,7 +21,7 @@ #include #include -#include "../../w1/w1.h" +#include #include "../../w1/slaves/w1_ds2780.h" /* Current unit measurement in uA for a 1 milli-ohm sense resistor */ diff --git a/drivers/power/supply/ds2781_battery.c b/drivers/power/supply/ds2781_battery.c index cc0149131f89..4400402f9ec5 100644 --- a/drivers/power/supply/ds2781_battery.c +++ b/drivers/power/supply/ds2781_battery.c @@ -19,7 +19,7 @@ #include #include -#include "../../w1/w1.h" +#include #include "../../w1/slaves/w1_ds2781.h" /* Current unit measurement in uA for a 1 milli-ohm sense resistor */ diff --git a/drivers/w1/masters/ds1wm.c b/drivers/w1/masters/ds1wm.c index e0b8a4bc73df..fd2e9da27c4b 100644 --- a/drivers/w1/masters/ds1wm.c +++ b/drivers/w1/masters/ds1wm.c @@ -25,8 +25,7 @@ #include -#include "../w1.h" -#include "../w1_int.h" +#include #define DS1WM_CMD 0x00 /* R/W 4 bits command */ diff --git a/drivers/w1/masters/ds2482.c b/drivers/w1/masters/ds2482.c index e8730ea3e3aa..d49681cd29af 100644 --- a/drivers/w1/masters/ds2482.c +++ b/drivers/w1/masters/ds2482.c @@ -20,8 +20,7 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" +#include /** * Allow the active pullup to be disabled, default is enabled. diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c index d748e34d4ce5..46ccb2fc4f60 100644 --- a/drivers/w1/masters/ds2490.c +++ b/drivers/w1/masters/ds2490.c @@ -25,8 +25,7 @@ #include #include -#include "../w1_int.h" -#include "../w1.h" +#include /* USB Standard */ /* USB Control request vendor type */ diff --git a/drivers/w1/masters/matrox_w1.c b/drivers/w1/masters/matrox_w1.c index f20d03ecfd1d..d83d7c99d81d 100644 --- a/drivers/w1/masters/matrox_w1.c +++ b/drivers/w1/masters/matrox_w1.c @@ -34,8 +34,7 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" +#include /* * Matrox G400 DDC registers. diff --git a/drivers/w1/masters/mxc_w1.c b/drivers/w1/masters/mxc_w1.c index a4621757a47f..74f2e6e6202a 100644 --- a/drivers/w1/masters/mxc_w1.c +++ b/drivers/w1/masters/mxc_w1.c @@ -19,8 +19,7 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" +#include /* * MXC W1 Register offsets diff --git a/drivers/w1/masters/omap_hdq.c b/drivers/w1/masters/omap_hdq.c index 3302cbd2344a..3612542b6044 100644 --- a/drivers/w1/masters/omap_hdq.c +++ b/drivers/w1/masters/omap_hdq.c @@ -19,8 +19,7 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" +#include #define MOD_NAME "OMAP_HDQ:" diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c index a373ae69d9f6..a90728ceec5a 100644 --- a/drivers/w1/masters/w1-gpio.c +++ b/drivers/w1/masters/w1-gpio.c @@ -20,8 +20,7 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" +#include static u8 w1_gpio_set_pullup(void *data, int delay) { diff --git a/drivers/w1/slaves/w1_bq27000.c b/drivers/w1/slaves/w1_bq27000.c index d480900a28ab..8046ac45381a 100644 --- a/drivers/w1/slaves/w1_bq27000.c +++ b/drivers/w1/slaves/w1_bq27000.c @@ -17,9 +17,9 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_BQ27000 0x01 #define HDQ_CMD_READ (0) #define HDQ_CMD_WRITE (1<<7) diff --git a/drivers/w1/slaves/w1_ds2405.c b/drivers/w1/slaves/w1_ds2405.c index d5d54876cb64..42a1e81060ce 100644 --- a/drivers/w1/slaves/w1_ds2405.c +++ b/drivers/w1/slaves/w1_ds2405.c @@ -24,8 +24,9 @@ #include #include -#include "../w1.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_DS2405 0x05 MODULE_LICENSE("GPL"); MODULE_AUTHOR("Maciej S. Szmigiero "); diff --git a/drivers/w1/slaves/w1_ds2406.c b/drivers/w1/slaves/w1_ds2406.c index 709bd5e02eed..fac266366ca3 100644 --- a/drivers/w1/slaves/w1_ds2406.c +++ b/drivers/w1/slaves/w1_ds2406.c @@ -17,9 +17,9 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_DS2406 0x12 #define W1_F12_FUNC_READ_STATUS 0xAA #define W1_F12_FUNC_WRITE_STATUS 0x55 diff --git a/drivers/w1/slaves/w1_ds2408.c b/drivers/w1/slaves/w1_ds2408.c index e01d2b3997bc..b535d5ec35b6 100644 --- a/drivers/w1/slaves/w1_ds2408.c +++ b/drivers/w1/slaves/w1_ds2408.c @@ -15,9 +15,9 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_DS2408 0x29 #define W1_F29_RETRIES 3 diff --git a/drivers/w1/slaves/w1_ds2413.c b/drivers/w1/slaves/w1_ds2413.c index 9cc6f0bc2e95..492e3d010321 100644 --- a/drivers/w1/slaves/w1_ds2413.c +++ b/drivers/w1/slaves/w1_ds2413.c @@ -16,9 +16,9 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_DS2413 0x3A #define W1_F3A_RETRIES 3 #define W1_F3A_FUNC_PIO_ACCESS_READ 0xF5 diff --git a/drivers/w1/slaves/w1_ds2423.c b/drivers/w1/slaves/w1_ds2423.c index 306240fe496c..050407c53b16 100644 --- a/drivers/w1/slaves/w1_ds2423.c +++ b/drivers/w1/slaves/w1_ds2423.c @@ -30,9 +30,9 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_COUNTER_DS2423 0x1D #define CRC16_VALID 0xb001 #define CRC16_INIT 0 diff --git a/drivers/w1/slaves/w1_ds2431.c b/drivers/w1/slaves/w1_ds2431.c index 20182d4a4b19..5adecd3face1 100644 --- a/drivers/w1/slaves/w1_ds2431.c +++ b/drivers/w1/slaves/w1_ds2431.c @@ -16,9 +16,9 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_EEPROM_DS2431 0x2D #define W1_F2D_EEPROM_SIZE 128 #define W1_F2D_PAGE_COUNT 4 diff --git a/drivers/w1/slaves/w1_ds2433.c b/drivers/w1/slaves/w1_ds2433.c index 86c30aceea3e..75ad70cfe8e8 100644 --- a/drivers/w1/slaves/w1_ds2433.c +++ b/drivers/w1/slaves/w1_ds2433.c @@ -22,9 +22,9 @@ #endif -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_EEPROM_DS2433 0x23 #define W1_EEPROM_SIZE 512 #define W1_PAGE_COUNT 16 diff --git a/drivers/w1/slaves/w1_ds2438.c b/drivers/w1/slaves/w1_ds2438.c index 5ededb4965e1..6487fb772a20 100644 --- a/drivers/w1/slaves/w1_ds2438.c +++ b/drivers/w1/slaves/w1_ds2438.c @@ -13,8 +13,9 @@ #include #include -#include "../w1.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_DS2438 0x26 #define W1_DS2438_RETRIES 3 diff --git a/drivers/w1/slaves/w1_ds2760.c b/drivers/w1/slaves/w1_ds2760.c index f35d1e2ef9bb..26168abfb8b8 100644 --- a/drivers/w1/slaves/w1_ds2760.c +++ b/drivers/w1/slaves/w1_ds2760.c @@ -18,11 +18,12 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + #include "w1_ds2760.h" +#define W1_FAMILY_DS2760 0x30 + static int w1_ds2760_io(struct device *dev, char *buf, int addr, size_t count, int io) { diff --git a/drivers/w1/slaves/w1_ds2780.c b/drivers/w1/slaves/w1_ds2780.c index 292972212107..a60528131154 100644 --- a/drivers/w1/slaves/w1_ds2780.c +++ b/drivers/w1/slaves/w1_ds2780.c @@ -21,11 +21,12 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + #include "w1_ds2780.h" +#define W1_FAMILY_DS2780 0x32 + static int w1_ds2780_do_io(struct device *dev, char *buf, int addr, size_t count, int io) { diff --git a/drivers/w1/slaves/w1_ds2781.c b/drivers/w1/slaves/w1_ds2781.c index a5d75067b230..645be6e0b24a 100644 --- a/drivers/w1/slaves/w1_ds2781.c +++ b/drivers/w1/slaves/w1_ds2781.c @@ -18,11 +18,12 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + #include "w1_ds2781.h" +#define W1_FAMILY_DS2781 0x3D + static int w1_ds2781_do_io(struct device *dev, char *buf, int addr, size_t count, int io) { diff --git a/drivers/w1/slaves/w1_ds28e04.c b/drivers/w1/slaves/w1_ds28e04.c index c62858c05e8f..ec234b846eb3 100644 --- a/drivers/w1/slaves/w1_ds28e04.c +++ b/drivers/w1/slaves/w1_ds28e04.c @@ -20,9 +20,9 @@ #define CRC16_INIT 0 #define CRC16_VALID 0xb001 -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_DS28E04 0x1C /* Allow the strong pullup to be disabled, but default to enabled. * If it was disabled a parasite powered device might not get the required diff --git a/drivers/w1/slaves/w1_smem.c b/drivers/w1/slaves/w1_smem.c index 99b03bfb9941..e556b0caff71 100644 --- a/drivers/w1/slaves/w1_smem.c +++ b/drivers/w1/slaves/w1_smem.c @@ -27,9 +27,10 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_FAMILY_SMEM_01 0x01 +#define W1_FAMILY_SMEM_81 0x81 static struct w1_family w1_smem_family_01 = { .fid = W1_FAMILY_SMEM_01, diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c index ccaf29994a42..cb3fc3c6b0d1 100644 --- a/drivers/w1/slaves/w1_therm.c +++ b/drivers/w1/slaves/w1_therm.c @@ -30,9 +30,13 @@ #include #include -#include "../w1.h" -#include "../w1_int.h" -#include "../w1_family.h" +#include + +#define W1_THERM_DS18S20 0x10 +#define W1_THERM_DS1822 0x22 +#define W1_THERM_DS18B20 0x28 +#define W1_THERM_DS1825 0x3B +#define W1_THERM_DS28EA00 0x42 /* Allow the strong pullup to be disabled, but default to enabled. * If it was disabled a parasite powered device might not get the require diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index 8172dee5e23c..95ea7e6b1d99 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -28,11 +28,11 @@ #include -#include "w1.h" -#include "w1_int.h" -#include "w1_family.h" +#include "w1_internal.h" #include "w1_netlink.h" +#define W1_FAMILY_DEFAULT 0 + static int w1_timeout = 10; module_param_named(timeout, w1_timeout, int, 0); MODULE_PARM_DESC(timeout, "time in seconds between automatic slave searches"); diff --git a/drivers/w1/w1_family.c b/drivers/w1/w1_family.c index 9759cdaf22f4..f14ab0b340b5 100644 --- a/drivers/w1/w1_family.c +++ b/drivers/w1/w1_family.c @@ -18,8 +18,7 @@ #include #include -#include "w1_family.h" -#include "w1.h" +#include "w1_internal.h" DEFINE_SPINLOCK(w1_flock); static LIST_HEAD(w1_families); diff --git a/drivers/w1/w1_family.h b/drivers/w1/w1_family.h deleted file mode 100644 index 869a3ff87d29..000000000000 --- a/drivers/w1/w1_family.h +++ /dev/null @@ -1,98 +0,0 @@ -/* - * Copyright (c) 2004 Evgeniy Polyakov - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __W1_FAMILY_H -#define __W1_FAMILY_H - -#include -#include -#include - -#define W1_FAMILY_DEFAULT 0 -#define W1_FAMILY_BQ27000 0x01 -#define W1_FAMILY_SMEM_01 0x01 -#define W1_FAMILY_SMEM_81 0x81 -#define W1_FAMILY_DS2405 0x05 -#define W1_THERM_DS18S20 0x10 -#define W1_FAMILY_DS28E04 0x1C -#define W1_COUNTER_DS2423 0x1D -#define W1_THERM_DS1822 0x22 -#define W1_EEPROM_DS2433 0x23 -#define W1_FAMILY_DS2438 0x26 -#define W1_THERM_DS18B20 0x28 -#define W1_FAMILY_DS2408 0x29 -#define W1_EEPROM_DS2431 0x2D -#define W1_FAMILY_DS2760 0x30 -#define W1_FAMILY_DS2780 0x32 -#define W1_FAMILY_DS2413 0x3A -#define W1_FAMILY_DS2406 0x12 -#define W1_THERM_DS1825 0x3B -#define W1_FAMILY_DS2781 0x3D -#define W1_THERM_DS28EA00 0x42 - -#define MAXNAMELEN 32 - -struct w1_slave; - -/** - * struct w1_family_ops - operations for a family type - * @add_slave: add_slave - * @remove_slave: remove_slave - * @groups: sysfs group - */ -struct w1_family_ops -{ - int (* add_slave)(struct w1_slave *); - void (* remove_slave)(struct w1_slave *); - const struct attribute_group **groups; -}; - -/** - * struct w1_family - reference counted family structure. - * @family_entry: family linked list - * @fid: 8 bit family identifier - * @fops: operations for this family - * @refcnt: reference counter - */ -struct w1_family -{ - struct list_head family_entry; - u8 fid; - - struct w1_family_ops *fops; - - atomic_t refcnt; -}; - -extern spinlock_t w1_flock; - -void w1_family_put(struct w1_family *); -void __w1_family_get(struct w1_family *); -struct w1_family * w1_family_registered(u8); -void w1_unregister_family(struct w1_family *); -int w1_register_family(struct w1_family *); - -/** - * module_w1_driver() - Helper macro for registering a 1-Wire families - * @__w1_family: w1_family struct - * - * Helper macro for 1-Wire families which do not do anything special in module - * init/exit. This eliminates a lot of boilerplate. Each module may only - * use this macro once, and calling it replaces module_init() and module_exit() - */ -#define module_w1_family(__w1_family) \ - module_driver(__w1_family, w1_register_family, \ - w1_unregister_family) - -#endif /* __W1_FAMILY_H */ diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c index 4439d10709bb..1c776178f598 100644 --- a/drivers/w1/w1_int.c +++ b/drivers/w1/w1_int.c @@ -21,9 +21,8 @@ #include #include -#include "w1.h" +#include "w1_internal.h" #include "w1_netlink.h" -#include "w1_int.h" static int w1_search_count = -1; /* Default is continual scan */ module_param_named(search_count, w1_search_count, int, 0); diff --git a/drivers/w1/w1_int.h b/drivers/w1/w1_int.h deleted file mode 100644 index 371989159216..000000000000 --- a/drivers/w1/w1_int.h +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Copyright (c) 2004 Evgeniy Polyakov - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __W1_INT_H -#define __W1_INT_H - -#include -#include - -#include "w1.h" - -int w1_add_master_device(struct w1_bus_master *); -void w1_remove_master_device(struct w1_bus_master *); -void __w1_remove_master_device(struct w1_master *); - -#endif /* __W1_INT_H */ diff --git a/drivers/w1/w1_internal.h b/drivers/w1/w1_internal.h new file mode 100644 index 000000000000..1623e2fdccc7 --- /dev/null +++ b/drivers/w1/w1_internal.h @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2004 Evgeniy Polyakov + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __W1_H +#define __W1_H + +#include + +#include +#include + +#define W1_SLAVE_ACTIVE 0 +#define W1_SLAVE_DETACH 1 + +/** + * struct w1_async_cmd - execute callback from the w1_process kthread + * @async_entry: link entry + * @cb: callback function, must list_del and destroy this list before + * returning + * + * When inserted into the w1_master async_list, w1_process will execute + * the callback. Embed this into the structure with the command details. + */ +struct w1_async_cmd { + struct list_head async_entry; + void (*cb)(struct w1_master *dev, struct w1_async_cmd *async_cmd); +}; + +int w1_create_master_attributes(struct w1_master *master); +void w1_destroy_master_attributes(struct w1_master *master); +void w1_search(struct w1_master *dev, u8 search_type, + w1_slave_found_callback cb); +void w1_search_devices(struct w1_master *dev, u8 search_type, + w1_slave_found_callback cb); +/* call w1_unref_slave to release the reference counts w1_search_slave added */ +struct w1_slave *w1_search_slave(struct w1_reg_num *id); +/* + * decrements the reference on sl->master and sl, and cleans up if zero + * returns the reference count after it has been decremented + */ +int w1_unref_slave(struct w1_slave *sl); +void w1_slave_found(struct w1_master *dev, u64 rn); +void w1_search_process_cb(struct w1_master *dev, u8 search_type, + w1_slave_found_callback cb); +struct w1_slave *w1_slave_search_device(struct w1_master *dev, + struct w1_reg_num *rn); +struct w1_master *w1_search_master_id(u32 id); + +/* Disconnect and reconnect devices in the given family. Used for finding + * unclaimed devices after a family has been registered or releasing devices + * after a family has been unregistered. Set attach to 1 when a new family + * has just been registered, to 0 when it has been unregistered. + */ +void w1_reconnect_slaves(struct w1_family *f, int attach); +int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn); +/* 0 success, otherwise EBUSY */ +int w1_slave_detach(struct w1_slave *sl); + +void __w1_remove_master_device(struct w1_master *dev); + +void w1_family_put(struct w1_family *f); +void __w1_family_get(struct w1_family *f); +struct w1_family *w1_family_registered(u8 fid); + +extern struct device_driver w1_master_driver; +extern struct device w1_master_device; +extern int w1_max_slave_count; +extern int w1_max_slave_ttl; +extern struct list_head w1_masters; +extern struct mutex w1_mlock; +extern spinlock_t w1_flock; + +int w1_process_callbacks(struct w1_master *dev); +int w1_process(void *data); + +#endif /* __W1_H */ diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c index 1134e6b1eb02..d191e1f80579 100644 --- a/drivers/w1/w1_io.c +++ b/drivers/w1/w1_io.c @@ -18,7 +18,7 @@ #include #include -#include "w1.h" +#include "w1_internal.h" static int w1_delay_parm = 1; module_param_named(delay_coef, w1_delay_parm, int, 0); diff --git a/drivers/w1/w1_netlink.c b/drivers/w1/w1_netlink.c index 027950f997d1..f2f099caeb77 100644 --- a/drivers/w1/w1_netlink.c +++ b/drivers/w1/w1_netlink.c @@ -17,7 +17,7 @@ #include #include -#include "w1.h" +#include "w1_internal.h" #include "w1_netlink.h" #if defined(CONFIG_W1_CON) && (defined(CONFIG_CONNECTOR) || (defined(CONFIG_CONNECTOR_MODULE) && defined(CONFIG_W1_MODULE))) diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h index b389e5ff5fa5..a36661cd1f05 100644 --- a/drivers/w1/w1_netlink.h +++ b/drivers/w1/w1_netlink.h @@ -18,7 +18,7 @@ #include #include -#include "w1.h" +#include "w1_internal.h" /** * enum w1_cn_msg_flags - bitfield flags for struct cn_msg.flags diff --git a/drivers/w1/w1.h b/include/linux/w1.h similarity index 76% rename from drivers/w1/w1.h rename to include/linux/w1.h index 758a7a6322e9..90cbe7e65059 100644 --- a/drivers/w1/w1.h +++ b/include/linux/w1.h @@ -12,8 +12,10 @@ * GNU General Public License for more details. */ -#ifndef __W1_H -#define __W1_H +#ifndef __LINUX_W1_H +#define __LINUX_W1_H + +#include /** * struct w1_reg_num - broken out slave device id @@ -22,8 +24,7 @@ * @id: along with family is the unique device id * @crc: checksum of the other bytes */ -struct w1_reg_num -{ +struct w1_reg_num { #if defined(__LITTLE_ENDIAN_BITFIELD) __u64 family:8, id:48, @@ -39,12 +40,6 @@ struct w1_reg_num #ifdef __KERNEL__ -#include -#include -#include - -#include "w1_family.h" - #define W1_MAXNAMELEN 32 #define W1_SEARCH 0xF0 @@ -59,9 +54,6 @@ struct w1_reg_num #define W1_MATCH_ROM 0x55 #define W1_RESUME_CMD 0xA5 -#define W1_SLAVE_ACTIVE 0 -#define W1_SLAVE_DETACH 1 - /** * struct w1_slave - holds a single slave device on the bus * @@ -78,8 +70,7 @@ struct w1_reg_num * @dev: kernel device identifier * */ -struct w1_slave -{ +struct w1_slave { struct module *owner; unsigned char name[W1_MAXNAMELEN]; struct list_head w1_slave_entry; @@ -96,7 +87,6 @@ struct w1_slave typedef void (*w1_slave_found_callback)(struct w1_master *, u64); - /** * struct w1_bus_master - operations available on a bus master * @@ -142,8 +132,7 @@ typedef void (*w1_slave_found_callback)(struct w1_master *, u64); * reset_bus. * */ -struct w1_bus_master -{ +struct w1_bus_master { void *data; u8 (*read_bit)(void *); @@ -209,8 +198,7 @@ enum w1_master_flags { * @bus_master: io operations available * @seq: sequence number used for netlink broadcasts */ -struct w1_master -{ +struct w1_master { struct list_head w1_master_entry; struct module *owner; unsigned char name[W1_MAXNAMELEN]; @@ -254,45 +242,51 @@ struct w1_master u32 seq; }; +int w1_add_master_device(struct w1_bus_master *master); +void w1_remove_master_device(struct w1_bus_master *master); + /** - * struct w1_async_cmd - execute callback from the w1_process kthread - * @async_entry: link entry - * @cb: callback function, must list_del and destroy this list before - * returning - * - * When inserted into the w1_master async_list, w1_process will execute - * the callback. Embed this into the structure with the command details. + * struct w1_family_ops - operations for a family type + * @add_slave: add_slave + * @remove_slave: remove_slave + * @groups: sysfs group */ -struct w1_async_cmd { - struct list_head async_entry; - void (*cb)(struct w1_master *dev, struct w1_async_cmd *async_cmd); +struct w1_family_ops { + int (*add_slave)(struct w1_slave *sl); + void (*remove_slave)(struct w1_slave *sl); + const struct attribute_group **groups; }; -int w1_create_master_attributes(struct w1_master *); -void w1_destroy_master_attributes(struct w1_master *master); -void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb); -void w1_search_devices(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb); -/* call w1_unref_slave to release the reference counts w1_search_slave added */ -struct w1_slave *w1_search_slave(struct w1_reg_num *id); -/* decrements the reference on sl->master and sl, and cleans up if zero - * returns the reference count after it has been decremented */ -int w1_unref_slave(struct w1_slave *sl); -void w1_slave_found(struct w1_master *dev, u64 rn); -void w1_search_process_cb(struct w1_master *dev, u8 search_type, - w1_slave_found_callback cb); -struct w1_slave *w1_slave_search_device(struct w1_master *dev, - struct w1_reg_num *rn); -struct w1_master *w1_search_master_id(u32 id); - -/* Disconnect and reconnect devices in the given family. Used for finding - * unclaimed devices after a family has been registered or releasing devices - * after a family has been unregistered. Set attach to 1 when a new family - * has just been registered, to 0 when it has been unregistered. +/** + * struct w1_family - reference counted family structure. + * @family_entry: family linked list + * @fid: 8 bit family identifier + * @fops: operations for this family + * @refcnt: reference counter */ -void w1_reconnect_slaves(struct w1_family *f, int attach); -int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn); -/* 0 success, otherwise EBUSY */ -int w1_slave_detach(struct w1_slave *sl); +struct w1_family { + struct list_head family_entry; + u8 fid; + + struct w1_family_ops *fops; + + atomic_t refcnt; +}; + +int w1_register_family(struct w1_family *family); +void w1_unregister_family(struct w1_family *family); + +/** + * module_w1_driver() - Helper macro for registering a 1-Wire families + * @__w1_family: w1_family struct + * + * Helper macro for 1-Wire families which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit() + */ +#define module_w1_family(__w1_family) \ + module_driver(__w1_family, w1_register_family, \ + w1_unregister_family) u8 w1_triplet(struct w1_master *dev, int bdir); void w1_write_8(struct w1_master *, u8); @@ -321,16 +315,6 @@ static inline struct w1_master* dev_to_w1_master(struct device *dev) return container_of(dev, struct w1_master, dev); } -extern struct device_driver w1_master_driver; -extern struct device w1_master_device; -extern int w1_max_slave_count; -extern int w1_max_slave_ttl; -extern struct list_head w1_masters; -extern struct mutex w1_mlock; - -extern int w1_process_callbacks(struct w1_master *dev); -extern int w1_process(void *); - #endif /* __KERNEL__ */ -#endif /* __W1_H */ +#endif /* __LINUX_W1_H */