This patch exports the SMC key access functions from applesmc.c to allow
access from other drivers, in particular, the yet-to-be-written ACPI
driver for Target Display Mode (TDM).
Signed-off-by: Florian Echtler <floe@xxxxxxxxxxxxxx>
---
drivers/hwmon/applesmc.c | 10 +++++++---
include/linux/applesmc.h | 39 +++++++++++++++++++++++++++++++++++++++
2 files changed, 46 insertions(+), 3 deletions(-)
create mode 100644 include/linux/applesmc.h
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index 0af7fd3..ec637c1 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -44,6 +44,7 @@
#include <linux/hwmon.h>
#include <linux/workqueue.h>
#include <linux/err.h>
+#include <linux/applesmc.h>
/* data port used by Apple SMC */
#define APPLESMC_DATA_PORT 0x300
@@ -433,7 +434,7 @@ static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key)
return applesmc_get_entry_by_index(begin);
}
-static int applesmc_read_key(const char *key, u8 *buffer, u8 len)
+int applesmc_read_key(const char *key, u8 *buffer, u8 len)
{
const struct applesmc_entry *entry;
@@ -443,8 +444,9 @@ static int applesmc_read_key(const char *key, u8 *buffer, u8 len)
return applesmc_read_entry(entry, buffer, len);
}
+EXPORT_SYMBOL(applesmc_read_key);
-static int applesmc_write_key(const char *key, const u8 *buffer, u8 len)
+int applesmc_write_key(const char *key, const u8 *buffer, u8 len)
{
const struct applesmc_entry *entry;
@@ -454,8 +456,9 @@ static int applesmc_write_key(const char *key, const u8 *buffer, u8 len)
return applesmc_write_entry(entry, buffer, len);
}
+EXPORT_SYMBOL(applesmc_write_key);
-static int applesmc_has_key(const char *key, bool *value)
+int applesmc_has_key(const char *key, bool *value)
{
const struct applesmc_entry *entry;
@@ -466,6 +469,7 @@ static int applesmc_has_key(const char *key, bool *value)
*value = !IS_ERR(entry);
return 0;
}
+EXPORT_SYMBOL(applesmc_has_key);
/*
* applesmc_read_s16 - Read 16-bit signed big endian register
diff --git a/include/linux/applesmc.h b/include/linux/applesmc.h
new file mode 100644
index 0000000..932d352
--- /dev/null
+++ b/include/linux/applesmc.h
@@ -0,0 +1,39 @@
+/*
+ * applesmc.h - functions to read/write keys in the Apple SMC
+ *
+ * Copyright (c) 2017 Florian 'floe' Echtler <floe@xxxxxxxxxxxxxx>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _LINUX_APPLESMC_H_
+#define _LINUX_APPLESMC_H_
+
+#if defined(CONFIG_SENSORS_APPLESMC)
+
+int applesmc_has_key(const char *key, bool *value);
+int applesmc_read_key(const char *key, u8 *buffer, u8 len);
+int applesmc_write_key(const char *key, const u8 *buffer, u8 len);
+
+#endif
+#endif /* _LINUX_APPLESMC_H_ */
+
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
