linux/include/ufs, branch v6.7

scsi: ufs: core: Add support for parsing OPP

2023-10-17T00:59:21Z

OPP framework can be used to scale the clocks along with other entities such as regulators, performance state etc... So let's add support for parsing OPP from devicetree. OPP support in devicetree is added through the "operating-points-v2" property which accepts the OPP table defining clock frequency, regulator voltage, power domain performance state etc... Since the UFS controller requires multiple clocks to be controlled for proper working, devm_pm_opp_set_config() has been used which supports scaling multiple clocks through custom ufshcd_opp_config_clks() callback. It should be noted that the OPP support is not compatible with the old "freq-table-hz" property. So only one can be used at a time even though the UFS core supports both. Co-developed-by: Krzysztof Kozlowski Signed-off-by: Krzysztof Kozlowski Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20231012172129.65172-4-manivannan.sadhasivam@linaro.org Signed-off-by: Martin K. Petersen

scsi: ufs: core: Add OPP support for scaling clocks and regulators

2023-10-17T00:59:21Z

UFS core is only scaling the clocks during devfreq scaling and initialization. But for an optimum power saving, regulators should also be scaled along with the clocks. So let's use the OPP framework which supports scaling clocks, regulators, and performance state using OPP table defined in devicetree. For accomodating the OPP support, the existing APIs (ufshcd_scale_clks, ufshcd_is_devfreq_scaling_required and ufshcd_devfreq_scale) are modified to accept "freq" as an argument which in turn used by the OPP helpers. The OPP support is added along with the old freq-table based clock scaling so that the existing platforms work as expected. Co-developed-by: Krzysztof Kozlowski Signed-off-by: Krzysztof Kozlowski Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20231012172129.65172-3-manivannan.sadhasivam@linaro.org Signed-off-by: Martin K. Petersen

scsi: ufs: core: Set the Command Priority (CP) flag for RT requests

2023-09-27T15:12:50Z

Make the UFS device execute realtime (RT) requests before other requests. This will be used in Android to reduce the I/O latency of the foreground app. Note: UFS devices do not support CDL so using CDL is not a viable alternative. Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20230921192335.676924-5-bvanassche@acm.org Reviewed-by: Avri Altman Signed-off-by: Martin K. Petersen

scsi: ufs: core: Move the 4K alignment code into the Exynos driver

2023-09-27T15:12:50Z

The DMA alignment for the Exynos controller follows directly from the PRDT segment size configured in ufs-exynos.c. Hence, move the DMA alignment code into the Exynos driver source code. Cc: Alim Akhtar Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20230921192335.676924-3-bvanassche@acm.org Reviewed-by: Alim Akhtar Tested-by: Alim Akhtar Signed-off-by: Martin K. Petersen

Merge branch 'fixes' into misc

2023-09-02T07:25:19Z

scsi: ufs: core: Export ufshcd_is_hba_active()

2023-08-08T01:06:19Z

Export ufshcd_is_hba_active() to allow driver modules to check the state of the host controller. Signed-off-by: Nitin Rawat Link: https://lore.kernel.org/r/20230726134140.7180-2-quic_nitirawa@quicinc.com Acked-by: Manivannan Sadhasivam Signed-off-by: Martin K. Petersen

Merge patch series "Multiple cleanup patches for the UFS driver"

2023-07-31T19:18:34Z

Bart Van Assche says: Hi Martin, This patch includes the following changes, none of which should change the functionality of the UFS host controller driver: - Improve the kernel-doc headers further. - Fix multiple W=2 compiler warnings. - Simplify ufshcd_abort_all(). - Simplify the code for creating and parsing UFS Transport Protocol (UTP) headers. Please consider this patch series for the next merge window. Thanks, Bart. Link: https://lore.kernel.org/r/20230727194457.3152309-1-bvanassche@acm.org Signed-off-by: Martin K. Petersen

scsi: ufs: Simplify response header parsing

2023-07-31T19:17:51Z

Make the code that parses UTP transfer request headers easier to read by using u8 instead of __be32 where appropriate. Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20230727194457.3152309-13-bvanassche@acm.org Reviewed-by: Avri Altman Signed-off-by: Martin K. Petersen

scsi: ufs: Simplify transfer request header initialization

2023-07-31T19:17:51Z

Make the code that initializes UTP transfer request headers easier to read by using bitfields instead of __le32 where appropriate. Cc: "Bao D. Nguyen" Cc: Eric Biggers Cc: Avri Altman Cc: Bean Huo Cc: Adrian Hunter Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20230727194457.3152309-12-bvanassche@acm.org Reviewed-by: Avri Altman Signed-off-by: Martin K. Petersen

scsi: ufs: Remove a member variable

2023-07-31T19:17:51Z

Remove the 'response' member variable because no code reads its value. Additionally, move the ufs_query_req and ufs_query_res data structure definitions into include/ufs/ufshcd.h because these data structures are related to the UFS host controller driver. Reviewed-by: Avri Altman Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20230727194457.3152309-11-bvanassche@acm.org Signed-off-by: Martin K. Petersen