[PATCH 3/3] w1: Add subsystem kernel public interface
From: Andrew F. Davis
Date: Thu Mar 16 2017 - 11:20:51 EST
Like other subsystems we should be able to define slave devices outside
of the w1 directory. To do this we move public facing interface
definitions to include/linux/w1.h and rename the internal definition
file to w1_internal.h.
As w1_family.h and w1_int.h contained almost entirely public
driver interface definitions we simply removed these files and
moved the remaining definitions into w1_internal.h.
With this we can now start to move slave devices out of w1/slaves and
into the subsystem based on the function they implement, again like
other drivers.
Signed-off-by: Andrew F. Davis <afd@xxxxxx>
---
MAINTAINERS | 1 +
drivers/w1/masters/ds1wm.c | 3 +-
drivers/w1/masters/ds2482.c | 3 +-
drivers/w1/masters/ds2490.c | 3 +-
drivers/w1/masters/matrox_w1.c | 3 +-
drivers/w1/masters/mxc_w1.c | 3 +-
drivers/w1/masters/omap_hdq.c | 3 +-
drivers/w1/masters/w1-gpio.c | 3 +-
drivers/w1/slaves/w1_bq27000.c | 6 +-
drivers/w1/slaves/w1_ds2405.c | 5 +-
drivers/w1/slaves/w1_ds2406.c | 6 +-
drivers/w1/slaves/w1_ds2408.c | 6 +-
drivers/w1/slaves/w1_ds2413.c | 6 +-
drivers/w1/slaves/w1_ds2423.c | 6 +-
drivers/w1/slaves/w1_ds2431.c | 6 +-
drivers/w1/slaves/w1_ds2433.c | 6 +-
drivers/w1/slaves/w1_ds2760.c | 7 ++-
drivers/w1/slaves/w1_ds2780.c | 7 ++-
drivers/w1/slaves/w1_ds2781.c | 7 ++-
drivers/w1/slaves/w1_ds28e04.c | 6 +-
drivers/w1/slaves/w1_smem.c | 7 ++-
drivers/w1/slaves/w1_therm.c | 10 +++-
drivers/w1/w1.c | 6 +-
drivers/w1/w1_family.c | 3 +-
drivers/w1/w1_family.h | 97 -------------------------------
drivers/w1/w1_int.c | 3 +-
drivers/w1/w1_int.h | 27 ---------
drivers/w1/w1_internal.h | 87 ++++++++++++++++++++++++++++
drivers/w1/w1_io.c | 2 +-
drivers/w1/w1_netlink.c | 2 +-
drivers/w1/w1_netlink.h | 2 +-
{drivers/w1 => include/linux}/w1.h | 116 ++++++++++++++++---------------------
32 files changed, 204 insertions(+), 254 deletions(-)
delete mode 100644 drivers/w1/w1_family.h
delete mode 100644 drivers/w1/w1_int.h
create mode 100644 drivers/w1/w1_internal.h
rename {drivers/w1 => include/linux}/w1.h (76%)
diff --git a/MAINTAINERS b/MAINTAINERS
index c265a5fe4848..ff52c1b2e167 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13500,6 +13500,7 @@ M: Evgeniy Polyakov <zbr@xxxxxxxxxxx>
S: Maintained
F: Documentation/w1/
F: drivers/w1/
+F: include/linux/w1.h
W83791D HARDWARE MONITORING DRIVER
M: Marc Hulsman <m.hulsman@xxxxxxxxxx>
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 <asm/io.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
#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 <linux/delay.h>
#include <asm/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
/**
* 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 <linux/usb.h>
#include <linux/slab.h>
-#include "../w1_int.h"
-#include "../w1.h"
+#include <linux/w1.h>
/* 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 <linux/pci_ids.h>
#include <linux/pci.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
/*
* 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 <linux/module.h>
#include <linux/platform_device.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
/*
* 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 <linux/pm_runtime.h>
#include <linux/of.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
#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 <linux/of.h>
#include <linux/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
+#include <linux/w1.h>
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 <linux/mutex.h>
#include <linux/power/bq27xxx_battery.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/string.h>
#include <linux/types.h>
-#include "../w1.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#define W1_FAMILY_DS2405 0x05
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Maciej S. Szmigiero <mail@xxxxxxxxxxxxxxxxxxxxx>");
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 <linux/slab.h>
#include <linux/crc16.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/delay.h>
#include <linux/slab.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/delay.h>
#include <linux/slab.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/delay.h>
#include <linux/crc16.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/types.h>
#include <linux/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/w1.h>
+
+#define W1_EEPROM_DS2433 0x23
#define W1_EEPROM_SIZE 512
#define W1_PAGE_COUNT 16
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 <linux/idr.h>
#include <linux/gfp.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
#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 <linux/mutex.h>
#include <linux/idr.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
#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 <linux/platform_device.h>
#include <linux/mutex.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
#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 <linux/w1.h>
+
+#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 <linux/device.h>
#include <linux/types.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/slab.h>
#include <linux/delay.h>
-#include "../w1.h"
-#include "../w1_int.h"
-#include "../w1_family.h"
+#include <linux/w1.h>
+
+#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 <linux/atomic.h>
-#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 <linux/delay.h>
#include <linux/export.h>
-#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 c4a6b257a367..000000000000
--- a/drivers/w1/w1_family.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright (c) 2004 Evgeniy Polyakov <zbr@xxxxxxxxxxx>
- *
- * 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 <linux/types.h>
-#include <linux/device.h>
-#include <linux/atomic.h>
-
-#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_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 <linux/export.h>
#include <linux/moduleparam.h>
-#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 <zbr@xxxxxxxxxxx>
- *
- * 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 <linux/kernel.h>
-#include <linux/device.h>
-
-#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 <zbr@xxxxxxxxxxx>
+ *
+ * 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 <linux/w1.h>
+
+#include <linux/completion.h>
+#include <linux/mutex.h>
+
+#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 <linux/moduleparam.h>
#include <linux/module.h>
-#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 <linux/netlink.h>
#include <linux/connector.h>
-#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 <asm/types.h>
#include <linux/connector.h>
-#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..a7221037ce5e 100644
--- a/drivers/w1/w1.h
+++ b/include/linux/w1.h
@@ -1,5 +1,7 @@
/*
* Copyright (c) 2004 Evgeniy Polyakov <zbr@xxxxxxxxxxx>
+ * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
+ * Andrew F. Davis <afd@xxxxxx>
*
* 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
@@ -12,8 +14,10 @@
* GNU General Public License for more details.
*/
-#ifndef __W1_H
-#define __W1_H
+#ifndef __LINUX_W1_H
+#define __LINUX_W1_H
+
+#include <linux/device.h>
/**
* struct w1_reg_num - broken out slave device id
@@ -22,8 +26,7 @@
* @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 +42,6 @@ struct w1_reg_num
#ifdef __KERNEL__
-#include <linux/completion.h>
-#include <linux/device.h>
-#include <linux/mutex.h>
-
-#include "w1_family.h"
-
#define W1_MAXNAMELEN 32
#define W1_SEARCH 0xF0
@@ -59,9 +56,6 @@ 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 +72,7 @@ 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 +89,6 @@ 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 +134,7 @@ 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 +200,7 @@ 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 +244,51 @@ 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
+ */
+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()
*/
-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);
+#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 +317,6 @@ 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 */
--
2.11.0