ACPI: thinkpad-acpi: clean up CMOS commands subdriver
Some ThinkPad CMOS commands subdriver cleanups, and also rename/promote
cmos_eval to a ACPI helper function, as it is used by many other
subdrivers.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 19c14bb..8829d3c 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -273,6 +273,17 @@
return status;
}
+static int issue_thinkpad_cmos_command(int cmos_cmd)
+{
+ if (!cmos_handle)
+ return -ENXIO;
+
+ if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
+ return -EIO;
+
+ return 0;
+}
+
/*************************************************************************
* ACPI device model
*/
@@ -1550,14 +1561,6 @@
return (cmos_handle)? 0 : 1;
}
-static int cmos_eval(int cmos_cmd)
-{
- if (cmos_handle)
- return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd);
- else
- return 1;
-}
-
static int cmos_read(char *p)
{
int len = 0;
@@ -1577,10 +1580,7 @@
static int cmos_write(char *buf)
{
char *cmd;
- int cmos_cmd;
-
- if (!cmos_handle)
- return -EINVAL;
+ int cmos_cmd, res;
while ((cmd = next_cmd(&buf))) {
if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
@@ -1589,8 +1589,9 @@
} else
return -EINVAL;
- if (!cmos_eval(cmos_cmd))
- return -EIO;
+ res = issue_thinkpad_cmos_command(cmos_cmd);
+ if (res)
+ return res;
}
return 0;
@@ -2093,7 +2094,7 @@
cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN;
inc = value > current_value ? 1 : -1;
for (i = current_value; i != value; i += inc) {
- if (!cmos_eval(cmos_cmd))
+ if (issue_thinkpad_cmos_command(cmos_cmd))
return -EIO;
if (!acpi_ec_write(brightness_offset, i + inc))
return -EIO;
@@ -2210,16 +2211,16 @@
cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
inc = new_level > level ? 1 : -1;
- if (mute && (!cmos_eval(cmos_cmd) ||
+ if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
!acpi_ec_write(volume_offset, level)))
return -EIO;
for (i = level; i != new_level; i += inc)
- if (!cmos_eval(cmos_cmd) ||
+ if (issue_thinkpad_cmos_command(cmos_cmd) ||
!acpi_ec_write(volume_offset, i + inc))
return -EIO;
- if (mute && (!cmos_eval(TP_CMOS_VOLUME_MUTE) ||
+ if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
!acpi_ec_write(volume_offset,
new_level + mute)))
return -EIO;
@@ -2228,7 +2229,7 @@
if (new_mute != mute) { /* level doesn't change */
cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
- if (!cmos_eval(cmos_cmd) ||
+ if (issue_thinkpad_cmos_command(cmos_cmd) ||
!acpi_ec_write(volume_offset, level + new_mute))
return -EIO;
}