[PATCH v3 00/12] ufs-qcom: phy/hcd: Clean up qcom-ufs phy and ufs-qcom hcd

[Vivek Gautam <vivek.gautam@codeaurora.org>]

These patches cleanup the ufs phy driver to an extent.
Subsequent patches will target to clean the phy_init() of
these qcom-ufs phy drivers in order to get rid of a number of
exported APIs that phy drivers expose for ufs-qcom hcd driver
to use.

These patches are based on linux-phy next branch, and have been
tested with on db820c hardware with integration branch -
'integration-linux-qcomlt' of qualcomm linaro lt tree [1].

Changes since v2:
 1) Addressed review comment for the patch making tx/rx_iface clocks
    as optional.
    Added a new compatible string for 14nm ufs phy present on msm8996
    chips, and skipping the tx/r_iface clock fetching based on this
    compatible string.
 2) Added phy_power_off() and phy_power_on() calls in setup_clock()
    callback of ufs-qcom platform driver. This is to follow the
    turning off of the clocks during aggressive clock gating.
 3) Addressed review comment for fixing commit message for patch:
    phy: qcom-ufs-qmp-xx: Discard remove callback for drivers.
 4) Added a patch to remove the call to devm_free() for resource
    allocated through devm_kzalloc().

Changes since v1:
 1) Added a patch to the series to remove following unnecessary
    function declarations by moving the code:
    - __ufs_qcom_phy_init_vreg(),
    - ufs_qcom_phy_init_vreg(),
    - ufs_qcom_phy_base_init()
 2) Cleaned up following functions further for patch [2]:
    - ufs_qcom_phy_enable(/disable)_ref_clk()
    - ufs_qcom_phy_enable(/disable)_iface_clk()
 3) Added patch to add phy_exit() call to ufs-qcom exit path.
 4) Added a patch to remove ufs_qcom_phy_exit() from 'phy-qcom-ufs'
    driver, since this api just powers off the phy.

[1] https://git.linaro.org/landing-teams/working/qualcomm/kernel.git
[2] ufs-qcom: phy/hcd: Refactoring phy clock handling


Vivek Gautam (12):
  phy: qcom-ufs: Remove unnecessary BUG_ON
  phy: qcom-ufs: Use devm sibling of kstrdup for regulator names
  phy: qcom-ufs: Cleanup clock and regulator initialization
  phy: qcom-ufs-14nm: Add new compatible for msm8996 based phy
  phy: qcom-ufs: Skip obtaining rx/tx_iface_clk for msm8996 based phy
  phy: qcom-ufs-qmp-xx: Discard remove callback for drivers.
  phy: qcom-ufs: Remove unnecessary function declarations
  phy: qcom-ufs-qmp-xx: Move clock and regulator init out of phy init
  ufs-qcom: phy/hcd: Refactoring phy clock handling
  phy: qcom-ufs: Remove common layer phy exit callback
  scsi/ufs: qcom: Add phy_exit call in hcd exit path
  scsi/ufs: qcom: Don't free resource-managed kmalloc element

 Documentation/devicetree/bindings/ufs/ufs-qcom.txt |   7 +-
 drivers/phy/phy-qcom-ufs-i.h                       |   7 +-
 drivers/phy/phy-qcom-ufs-qmp-14nm.c                |  72 +++---
 drivers/phy/phy-qcom-ufs-qmp-20nm.c                |  65 ++---
 drivers/phy/phy-qcom-ufs.c                         | 269 +++++++++------------
 drivers/scsi/ufs/ufs-qcom.c                        |  20 +-
 include/linux/phy/phy-qcom-ufs.h                   |  18 --
 7 files changed, 184 insertions(+), 274 deletions(-)

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