Series add support for SW babble control logic found in
new silicon versions of AM335x. Runtime differentiation of
silicon version is done by checking the BABBLE_CTL register.
For newer silicon the register default value read is 0x4 and
for older versions its 0x0.
Patch 1 -> Handle Babble only if MUSB is in HOST mode
Patch 2 -> Convert recover work to delayed work.
Patch 3 -> usb_phy_vbus_(off/_on) are NOPs for am335x PHY
so use usb_phy(_shutdown/_init) in musb_platform_reset()
Patch 4 -> Add return value for musb_platform_reset() in prepration
to support SW babble_ctrl
Patch 5 -> Add the sw_babble_control()
Patch 6 -> Enable sw babble control for newer silicon
v4 -> v5 : Added a debug print before resetting MUSB.
changed a musb_readb to dsps_readb introduced in Patch#5 of v4.
v3 -> v4 : Fixes an issue in gagdet mode - BUS RESET should not
be handled as a BABBLE. Added a check for the same.(Patch #1)
Enable sw babble control properly (Patch #6)
v2 -> v3 : Modify musb_platform_reset() to return zero on success.
George Cherian (6):
usb: musb: core: Handle Babble condition only in HOST mode
usb: musb: core: Convert babble recover work to delayed work
usb: musb: dsps: Call usb_phy(_shutdown/_init) during
musb_platform_reset()
usb: musb: core: Convert the musb_platform_reset to have a return
value.
usb: musb: dsps: Add the sw_babble_control()
usb: musb: dsps: Enable sw babble control for newer silicon
drivers/usb/musb/musb_core.c | 27 ++++++++------
drivers/usb/musb/musb_core.h | 12 +++---
drivers/usb/musb/musb_dsps.c | 87 ++++++++++++++++++++++++++++++++++++++++++--
drivers/usb/musb/musb_regs.h | 7 ++++
4 files changed, 113 insertions(+), 20 deletions(-)
--
1.8.3.1
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