diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/thinkpad_acpi.c | 39 | ||||
| -rw-r--r-- | drivers/misc/thinkpad_acpi.h | 4 |
2 files changed, 23 insertions, 20 deletions
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 19c14bbe8b2..8829d3c6b44 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -273,6 +273,17 @@ static int _sta(acpi_handle handle) 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 @@ static int __init cmos_init(struct ibm_init_struct *iibm) 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_read(char *p) 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 @@ static int cmos_write(char *buf) } 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 @@ static int brightness_set(int value) 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 @@ static int volume_write(char *buf) 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 @@ static int volume_write(char *buf) 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; } diff --git a/drivers/misc/thinkpad_acpi.h b/drivers/misc/thinkpad_acpi.h index 3a8718a0811..fb0abb02a01 100644 --- a/drivers/misc/thinkpad_acpi.h +++ b/drivers/misc/thinkpad_acpi.h @@ -116,6 +116,9 @@ static void drv_acpi_handle_init(char *name, drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ object##_paths, ARRAY_SIZE(object##_paths), &object##_path) +/* ThinkPad ACPI helpers */ +static int issue_thinkpad_cmos_command(int cmos_cmd); + /* procfs support */ static struct proc_dir_entry *proc_dir; @@ -275,7 +278,6 @@ static int brightness_write(char *buf); * CMOS subdriver */ -static int cmos_eval(int cmos_cmd); static int cmos_read(char *p); static int cmos_write(char *buf); |