Improve the comments describing the different values of enum
ata_lpm_policy in include/linux/libata.h. The comments match the
description given for the CONFIG_SATA_MOBILE_LPM_POLICY config
parameter.
No functional changes.
Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
---
include/linux/libata.h | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 721f0805b6c9..f8bdf167bad9 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -499,16 +499,23 @@ enum ata_completion_errors {
};
/*
- * Link power management policy: If you alter this, you also need to
- * alter libata-sata.c (for the ascii descriptions)
+ * Link power management policy: If you alter this, you also need to alter
+ * the policy names used with the sysfs attribute link_power_management_policy
+ * defined in libata-sata.c
*/
enum ata_lpm_policy {
+ /* 0 => Keep firmware settings */
ATA_LPM_UNKNOWN,
+ /* 1 => No power savings (maximum performance) */
ATA_LPM_MAX_POWER,
+ /* 2 => HIPM (Partial) */
ATA_LPM_MED_POWER,
- ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */
- ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */
- ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */
+ /* 3 => HIPM (Partial) and DIPM (Partial and Slumber) */
+ ATA_LPM_MED_POWER_WITH_DIPM,
+ /* 4 => HIPM (Partial and DevSleep) and DIPM (Partial and Slumber) */
+ ATA_LPM_MIN_POWER_WITH_PARTIAL,
+ /* 5 => HIPM (Slumber and DevSleep) and DIPM (Partial and Slumber) */
+ ATA_LPM_MIN_POWER,
};
enum ata_lpm_hints {
--
2.49.0
