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| author |   Bjorn Andersson <bjorn.andersson@linaro.org> | 2019-08-28 12:17:55 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2019-09-07 16:36:03 -0400 |
| commit | b8416b2fedbf1cfe1c3645c627b2341d253880bd (patch) | |
| tree | e2b085f6e9024efe16e13bee7bdd33018797a436 /drivers/scsi/ufs/ufs-qcom.h | |
| parent | scsi: ufs: Introduce vops for resetting device (diff) | |
| download | linux-dev-b8416b2fedbf1cfe1c3645c627b2341d253880bd.tar.xz linux-dev-b8416b2fedbf1cfe1c3645c627b2341d253880bd.zip | |
scsi: ufs-qcom: Implement device_reset vops
The UFS_RESET pin on Qualcomm SoCs are controlled by TLMM and exposed
through the GPIO framework. Acquire the device-reset GPIO and use this to
implement the device_reset vops, to allow resetting the attached memory.
Based on downstream support implemented by Subhash Jadavani
<subhashj@codeaurora.org>.
Link: https://lore.kernel.org/r/20190828191756.24312-3-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufs-qcom.h')
| -rw-r--r-- | drivers/scsi/ufs/ufs-qcom.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h index 001915d1e0e4..d401f174bb70 100644 --- a/drivers/scsi/ufs/ufs-qcom.h +++ b/drivers/scsi/ufs/ufs-qcom.h @@ -195,6 +195,8 @@ struct ufs_qcom_testbus { u8 select_minor; }; +struct gpio_desc; + struct ufs_qcom_host { /* * Set this capability if host controller supports the QUniPro mode @@ -232,6 +234,8 @@ struct ufs_qcom_host { struct ufs_qcom_testbus testbus; struct reset_controller_dev rcdev; + + struct gpio_desc *device_reset; }; static inline u32 |