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| author | Subhash Jadavani <subhashj@codeaurora.org> | 2015-01-09 18:08:00 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 10:58:21 -0700 |
| commit | e0c0dd6ba0f3962ee4982d940961b71cc6183d5c (patch) | |
| tree | b8d4a1cdcc289a870c86e0a37525a04f9921e09e /include/linux | |
| parent | bd0b5b89190f00a06ed6773aa6ecfa39884835be (diff) | |
scsi: ufs: set right GenSelectorIndex for M-PHY attributes
DME attributes read/write commands need GenSelectorIndex argument and
according to UFS host controller specification, it should specify the
targeted M-PHY data lane.
This is the valid range of GenSelectorIndex for M-PHY attributes:
0 to (2 * PA_MaxDataLanes - 1)
Example (Note: PA_MaxDataLanes is UniPro protocol constant set to 4):
---------------------------------------
MPHY Access target | GenSelectorIndex
---------------------------------------
TX Lane0 | 0
TX Lane1 | 1
RX Lane0 | 4
RX Lane1 | 5
---------------------------------------
This change make sure that correct GenSelectorIndex is passed for M-PHY
attributes
Change-Id: I38c14b5801ece7fce7a7970385756859618efd32
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
[venkatg@codeaurora.org: resolved trivial merge conflicts]
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/scsi/ufs/unipro.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/scsi/ufs/unipro.h b/include/linux/scsi/ufs/unipro.h index a0713c6642ca..3fdd775ee306 100644 --- a/include/linux/scsi/ufs/unipro.h +++ b/include/linux/scsi/ufs/unipro.h @@ -117,6 +117,9 @@ #define PA_TACTIVATE_TIME_UNIT_US 10 #define PA_HIBERN8_TIME_UNIT_US 100 +/* PHY Adapter Protocol Constants */ +#define PA_MAXDATALANES 4 + /* PA power modes */ enum { FAST_MODE = 1, |