On Mon 09 Apr 06:24 PDT 2018, Vivek Gautam wrote:
> While we try to transition from a separate ufs phy driver to a
> more integrated qmp phy driver, don't let SCSI_UFS_QCOM to
> enable PHY_QCOM_UFS config by default.
> The users should enable this in their defconfigs.
> Also add inline definitions for couple of functions -
> a) ufs_qcom_phy_set_tx_lane_enable()
> b) void ufs_qcom_phy_save_controller_version()
> to enable clean build for SCSI_UFS_QCOM.
>
> Signed-off-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
> ---
> drivers/scsi/ufs/Kconfig | 1 -
> include/linux/phy/phy-qcom-ufs.h | 15 ++++++++++++++-
> 2 files changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig
> index e27b4d4e6ae2..7e8898b6eb67 100644
> --- a/drivers/scsi/ufs/Kconfig
> +++ b/drivers/scsi/ufs/Kconfig
> @@ -91,7 +91,6 @@ config SCSI_UFS_DWC_TC_PLATFORM
> config SCSI_UFS_QCOM
> tristate "QCOM specific hooks to UFS controller platform driver"
> depends on SCSI_UFSHCD_PLATFORM && ARCH_QCOM
> - select PHY_QCOM_UFS
As you're depending on function in the UFS phy, which can be compiled as
a module you might end up in a configuration where UFS_QCOM is builtin
and the PHY_QCOM_UFS is module, which will fail to link.
So you need to make this:
depends on PHY_QCOM_UFS || PHY_QCOM_UFS=n
In which case we say that if PHY_QCOM_UFS is a module UFS_QCOM must be a
module and if PHY_QCOM_UFS is not compiled in UFS_QCOM can be either
builtin or a module.
> help
> This selects the QCOM specific additions to UFSHCD platform driver.
> UFS host on QCOM needs some vendor specific configuration before
> diff --git a/include/linux/phy/phy-qcom-ufs.h b/include/linux/phy/phy-qcom-ufs.h
> index 0a2c18a9771d..1388c2a2965e 100644
> --- a/include/linux/phy/phy-qcom-ufs.h
> +++ b/include/linux/phy/phy-qcom-ufs.h
> @@ -31,8 +31,21 @@ void ufs_qcom_phy_enable_dev_ref_clk(struct phy *phy);
> */
> void ufs_qcom_phy_disable_dev_ref_clk(struct phy *phy);
>
> +#if IS_ENABLED(CONFIG_PHY_QCOM_UFS)
> int ufs_qcom_phy_set_tx_lane_enable(struct phy *phy, u32 tx_lanes);
> void ufs_qcom_phy_save_controller_version(struct phy *phy,
> - u8 major, u16 minor, u16 step);
> + u8 major, u16 minor, u16 step);
> +#else
> +static inline int ufs_qcom_phy_set_tx_lane_enable(struct phy *phy, u32 tx_lanes)
> +{
> + return -ENOSYS;
> +}
> +
> +static inline void ufs_qcom_phy_save_controller_version(struct phy *phy,
> + u8 major, u16 minor,
> + u16 step)
> +{
> +}
> +#endif /* PHY_QCOM_UFS */
What's the timeline for getting rid of the references to these
functions? I presume that code depending on these being here will
compile but won't actually work?
Regards,
Bjorn
