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| author | Yaniv Gardi <ygardi@codeaurora.org> | 2015-05-17 17:55:06 +0200 |
|---|---|---|
| committer | James Bottomley <JBottomley@Odin.com> | 2015-06-02 22:20:54 +0200 |
| commit | ae977587da4ca9f34dbbae24e5479a3e8da166d0 (patch) | |
| tree | 64514c8dcee7c90e69b7fae0f89a21f630684790 /drivers/scsi/ufs | |
| parent | scsi: ufs: add quirk to handle broken UFS HCI version (diff) | |
| download | linux-ae977587da4ca9f34dbbae24e5479a3e8da166d0.tar.xz linux-ae977587da4ca9f34dbbae24e5479a3e8da166d0.zip | |
scsi: ufs-qcom: enable UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION
Newer revisions of QUALCOMM Technologies UFS host controller may not
advertise the correct version information in UFS HCI VER register.
To handle this, enable UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION to let
UFS standard host controller driver call into vendor specific
operation to get right UFS HCI VER register value.
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/ufs')
| -rw-r--r-- | drivers/scsi/ufs/ufs-qcom.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c index de9cfb05598a..4cdffa46d401 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -694,6 +694,16 @@ out: return ret; } +static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba) +{ + struct ufs_qcom_host *host = hba->priv; + + if (host->hw_ver.major == 0x1) + return UFSHCI_VERSION_11; + else + return UFSHCI_VERSION_20; +} + /** * ufs_qcom_advertise_quirks - advertise the known QCOM UFS controller quirks * @hba: host controller instance @@ -718,6 +728,7 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba) if (host->hw_ver.major >= 0x2) { hba->quirks |= UFSHCD_QUIRK_BROKEN_LCC; + hba->quirks |= UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION; if (!ufs_qcom_cap_qunipro(host)) /* Legacy UniPro mode still need following quirks */ @@ -1026,6 +1037,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { .name = "qcom", .init = ufs_qcom_init, .exit = ufs_qcom_exit, + .get_ufs_hci_version = ufs_qcom_get_ufs_hci_version, .clk_scale_notify = ufs_qcom_clk_scale_notify, .setup_clocks = ufs_qcom_setup_clocks, .hce_enable_notify = ufs_qcom_hce_enable_notify, |