linux-toradex.git/include/ufs/ufshcd.h, branch v6.1

scsi: ufs: core: Remove redundant function definitions from ufshcd.h

2022-09-25T16:50:44+00:00

Remove Query-Request API function declarations from include/ufs/ufshcd.h
and move them to the ufs core private header.

Link: https://lore.kernel.org/r/1663761485-2532-1-git-send-email-Arthur.Simchaev@wdc.com
Reviewed-by: Bean Huo 
Reviewed-by: Bart Van Assche 
Signed-off-by: Arthur Simchaev 
Signed-off-by: Martin K. Petersen

scsi: ufs: wb: Add explicit flush sysfs attribute

2022-08-23T03:15:11+00:00

There is the following quirk to bypass "WB Flush" in Write Booster.

	- UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL

If this quirk is not set, there is no knob that can control "WB Flush".

There are three flags that control Write Booster Feature:

	1. WB ON/OFF
	2. WB Hibern Flush ON/OFF (implicitly)
	3. WB Flush ON/OFF (explicit)

The sysfs attribute that controls the WB was implemented. (1)

In the case of "Hibern Flush", it is always good to turn on.  Control may
not be required. (2)

Finally, "Flush" may be necessary because the Auto-Hibern8 is not supported
in a specific environment.  So the sysfs attribute that controls this is
necessary. (3)

Link: https://lore.kernel.org/r/20220804075354epcms2p8c21c894b4e28840c5fc651875b7f435f@epcms2p8
Reviewed-by: Avri Altman 
Signed-off-by: Jinyoung Choi 
Signed-off-by: Martin K. Petersen

scsi: ufs: core: Allow host driver to disable wb toggling during clock scaling

2022-08-23T03:07:50+00:00

Mediatek UFS does not want to toggle write booster during clock scaling.
Permit host driver to disable wb toggling during clock scaling.

Introduce a flag UFSHCD_CAP_WB_WITH_CLK_SCALING to decouple WB and clock
scaling.  UFSHCD_CAP_WB_WITH_CLK_SCALING is only valid when
UFSHCD_CAP_CLK_SCALING is set. Just like UFSHCD_CAP_HIBERN8_WITH_CLK_GATING
is valid only when UFSHCD_CAP_CLK_GATING set.

Set UFSHCD_CAP_WB_WITH_CLK_SCALING for qcom to compatible legacy design at
the same time.

Link: https://lore.kernel.org/r/20220804025422.18803-1-peter.wang@mediatek.com
Reviewed-by: Stanley Chu 
Signed-off-by: Peter Wang 
Signed-off-by: Martin K. Petersen

scsi: ufs: core: Use local_clock() for debugging timestamps

2022-08-23T03:03:30+00:00

CLOCK_MONOTONIC is not advanced when the system is in suspend. This becomes
problematic when debugging issues related to suspend-resume: the timestamps
printed by ufshcd_print_trs can not be correlated with dmesg entries, which
are timestamped with local_clock().

Change the used clock to local_clock() for the informational timestamp
variables and adds mirroring *_local_clock instances for variables used in
subsequent derevations (to not change the semantics of those derevations).

Link: https://lore.kernel.org/r/20220804065019.v5.1.I699244ea7efbd326a34a6dfd9b5a31e78400cf68@changeid
Acked-by: Stanley Chu 
Acked-by: Avri Altman 
Signed-off-by: Daniil Lunev 
Signed-off-by: Martin K. Petersen

scsi: ufs: ufshcd: Constify pointed data

2022-06-28T02:26:45+00:00

For code safety, constify arrays and pointers to data which is not
modified.

Link: https://lore.kernel.org/r/20220623102432.108059-4-krzysztof.kozlowski@linaro.org
Reviewed-by: Bart Van Assche 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Martin K. Petersen

scsi: ufs: Export regulator functions

2022-06-17T02:08:44+00:00

Export below regulator functions to allow vendors to
customize regulator configuration in their own platforms.

int ufshcd_populate_vreg(struct device *dev, const char *name,
                         struct ufs_vreg **out_vreg);
int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg);

Link: https://lore.kernel.org/r/20220616053725.5681-10-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu 
Signed-off-by: Martin K. Petersen

scsi: ufs: Export ufshcd_uic_change_pwr_mode()

2022-06-17T02:08:43+00:00

Export ufshcd_uic_change_pwr_mode() to allow vendors to use it for
SoC-specific power mode change design limitations.

Link: https://lore.kernel.org/r/20220616053725.5681-2-stanley.chu@mediatek.com
Reviewed-by: Bart Van Assche 
Signed-off-by: Stanley Chu 
Signed-off-by: Martin K. Petersen

scsi: ufs: core: Add UFSHCD_QUIRK_HIBERN_FASTAUTO

2022-06-14T01:57:34+00:00

Add UFSHCD_QUIRK_HIBERN_FASTAUTO quirk for host controllers which supports
auto-hibernate the capability but only FASTAUTO mode.

Link: https://lore.kernel.org/r/20220603110524.1997825-4-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Yoshihiro Shimoda 
Signed-off-by: Martin K. Petersen

scsi: ufs: core: Add UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS

2022-06-14T01:57:34+00:00

Add UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS for host controllers which do not
support 64-bit addressing.

Link: https://lore.kernel.org/r/20220603110524.1997825-3-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Yoshihiro Shimoda 
Signed-off-by: Martin K. Petersen

scsi: ufs: Split the drivers/scsi/ufs directory

2022-05-20T00:27:37+00:00

Split the drivers/scsi/ufs directory into 'core' and 'host' directories
under the drivers/ufs/ directory. Move shared header files into the
include/ufs/ directory. This separation makes it clear which header files
UFS drivers are allowed to include (include/ufs/*.h) and which header files
UFS drivers are not allowed to include (drivers/ufs/core/*.h).

Update the MAINTAINERS file. Add myself as a UFS reviewer.

Link: https://lore.kernel.org/r/20220511212552.655341-1-bvanassche@acm.org
Cc: Adrian Hunter 
Cc: Avri Altman 
Cc: Bean Huo 
Cc: Bjorn Andersson 
Cc: Keoseong Park 
Tested-by: Bean Huo 
Tested-by: Adrian Hunter 
Reviewed-by: Bean Huo 
Acked-by: Avri Altman 
Acked-by: Adrian Hunter 
Signed-off-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen