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path: root/drivers/w1/w1_io.c
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Diffstat (limited to 'drivers/w1/w1_io.c')
-rw-r--r--drivers/w1/w1_io.c31
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c
index f7f7e8bec30e..30b6fbf83bd4 100644
--- a/drivers/w1/w1_io.c
+++ b/drivers/w1/w1_io.c
@@ -23,10 +23,10 @@
#include <linux/delay.h>
#include <linux/moduleparam.h>
+#include <linux/module.h>
#include "w1.h"
#include "w1_log.h"
-#include "w1_io.h"
static int w1_delay_parm = 1;
module_param_named(delay_coef, w1_delay_parm, int, 0);
@@ -50,7 +50,7 @@ static u8 w1_crc8_table[] = {
116, 42, 200, 150, 21, 75, 169, 247, 182, 232, 10, 84, 215, 137, 107, 53
};
-void w1_delay(unsigned long tm)
+static void w1_delay(unsigned long tm)
{
udelay(tm * w1_delay_parm);
}
@@ -61,7 +61,7 @@ static u8 w1_read_bit(struct w1_master *dev);
/**
* Generates a write-0 or write-1 cycle and samples the level.
*/
-u8 w1_touch_bit(struct w1_master *dev, int bit)
+static u8 w1_touch_bit(struct w1_master *dev, int bit)
{
if (dev->bus_master->touch_bit)
return dev->bus_master->touch_bit(dev->bus_master->data, bit);
@@ -108,6 +108,7 @@ void w1_write_8(struct w1_master *dev, u8 byte)
for (i = 0; i < 8; ++i)
w1_touch_bit(dev, (byte >> i) & 0x1);
}
+EXPORT_SYMBOL_GPL(w1_write_8);
/**
@@ -176,7 +177,7 @@ u8 w1_triplet(struct w1_master *dev, int bdir)
* @param dev the master device
* @return the byte read
*/
-u8 w1_read_8(struct w1_master * dev)
+static u8 w1_read_8(struct w1_master * dev)
{
int i;
u8 res = 0;
@@ -208,6 +209,7 @@ void w1_write_block(struct w1_master *dev, const u8 *buf, int len)
for (i = 0; i < len; ++i)
w1_write_8(dev, buf[i]);
}
+EXPORT_SYMBOL_GPL(w1_write_block);
/**
* Reads a series of bytes.
@@ -232,6 +234,7 @@ u8 w1_read_block(struct w1_master *dev, u8 *buf, int len)
return ret;
}
+EXPORT_SYMBOL_GPL(w1_read_block);
/**
* Issues a reset bus sequence.
@@ -257,6 +260,7 @@ int w1_reset_bus(struct w1_master *dev)
return result;
}
+EXPORT_SYMBOL_GPL(w1_reset_bus);
u8 w1_calc_crc8(u8 * data, int len)
{
@@ -267,14 +271,15 @@ u8 w1_calc_crc8(u8 * data, int len)
return crc;
}
+EXPORT_SYMBOL_GPL(w1_calc_crc8);
-void w1_search_devices(struct w1_master *dev, w1_slave_found_callback cb)
+void w1_search_devices(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb)
{
dev->attempts++;
if (dev->bus_master->search)
- dev->bus_master->search(dev->bus_master->data, cb);
+ dev->bus_master->search(dev->bus_master->data, search_type, cb);
else
- w1_search(dev, cb);
+ w1_search(dev, search_type, cb);
}
/**
@@ -299,14 +304,4 @@ int w1_reset_select_slave(struct w1_slave *sl)
}
return 0;
}
-
-EXPORT_SYMBOL(w1_touch_bit);
-EXPORT_SYMBOL(w1_write_8);
-EXPORT_SYMBOL(w1_read_8);
-EXPORT_SYMBOL(w1_reset_bus);
-EXPORT_SYMBOL(w1_calc_crc8);
-EXPORT_SYMBOL(w1_delay);
-EXPORT_SYMBOL(w1_read_block);
-EXPORT_SYMBOL(w1_write_block);
-EXPORT_SYMBOL(w1_search_devices);
-EXPORT_SYMBOL(w1_reset_select_slave);
+EXPORT_SYMBOL_GPL(w1_reset_select_slave);