linux-toradex.git/drivers/usb/host/uhci-hcd.c, branch v4.14

usb/uhci: Add support for Aspeed BMC SoCs

2017-05-25T12:30:13+00:00

The Aspeed 2400/2500 families have a variant of UHCI which requires
some quirks to the driver to work:

 - The register offsets are different. We add a remapping helper.

 - All accesses have to be done via 32-bit loads and stores. We
   force all accessors to use readl/writel. This is of no consequence
   for reads as we never read "in the middle" of a register. For writes
   it also works fine as the registers only actually implement the bits
   we try to write (16-bit for the registers accessed with writew and
   8-bit for the register accessed with writeb), so always using a
   32-bit write will have no negative effect. We never do partial writes.

 - The resume detect interrupt is broken

 - The number of ports is (optionally) provided via the device-tree

Signed-off-by: Benjamin Herrenschmidt 
Acked-by: Alan Stern 
--

v2. Remove the bulk of the #ifdef's

 drivers/usb/host/Kconfig         |  6 ++++-
 drivers/usb/host/uhci-hcd.c      | 17 +++++++++++---
 drivers/usb/host/uhci-hcd.h      | 51 ++++++++++++++++++++++++++++++++++++++++
 drivers/usb/host/uhci-platform.c | 22 ++++++++++++++++-
 4 files changed, 91 insertions(+), 5 deletions(-)
Signed-off-by: Greg Kroah-Hartman

usb: add CONFIG_USB_PCI for system have both PCI HW and non-PCI based USB HW

2017-03-17T04:16:56+00:00

a lot of embeded system SOC (e.g. freescale T2080) have both
PCI and USB modules. But USB module is controlled by registers directly,
it have no relationship with PCI module.

when say N here it will not build PCI related code in USB driver.

Signed-off-by: yuan linyu 
Acked-by: Felipe Balbi 
Signed-off-by: Greg Kroah-Hartman

Replace with globally

2016-12-24T19:46:01+00:00

This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*'
  sed -i -e "s!$PATT!#include !" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro 
Signed-off-by: Linus Torvalds

usb: host: uhci-hcd: don't print on ENOMEM

2016-08-30T17:17:37+00:00

All kmalloc-based functions print enough information on failures.

Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman

USB: UHCI: don't allocate frame list atomically

2014-07-09T23:16:07+00:00

uhci_start() is executed one time during usb_add_hcd() call and by
default UHCI frame list is allocated from atomic DMA pool.

Do non-atomic allocation of uhci->frame and free some space in
coherent atomic DMA pool.

Signed-off-by: Vladimir Zapolskiy 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

usb: kill DEBUG compile option

2013-12-03T18:34:33+00:00

In the drivers that no longer need it, it is removed.
It is removed from the Makefile. Drivers not fully converted
to dynamic debug have it shifted down into the individual
drivers.

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

uhci: change dependency for debug parameter

2013-12-03T18:31:20+00:00

To allow a full switch to dynamic debugging make the
debug parameter conditional on defined(DEBUF) || defined(CONFIG_DYNAMIC_DEBUG)

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

Merge 3.8-rc5 into usb-next

2013-01-25T20:41:02+00:00

This fixes up a conflict with drivers/usb/serial/io_ti.c that came up in
linux-next.

Signed-off-by: Greg Kroah-Hartman

USB: uhci: beautify source code

2013-01-24T21:59:26+00:00

  get rid of the line breaks in string constants.
  let comments within 80 with limitation.
  delete ' \' at the end of a statement.

Signed-off-by: Chen Gang 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: uhci: check buffer length to avoid memory overflow

2013-01-24T21:42:09+00:00

  for function uhci_sprint_schedule:
    the buffer len is MAX_OUTPUT: 64 * 1024, which may not be enough:
      may loop UHCI_NUMFRAMES times (UHCI_NUMFRAMES is 1024)
      each time of loop may get more than 64 bytes
    so need check the buffer length to avoid memory overflow

  this patch fix it like this:
    at first, make enough room for buffering the exceeding contents
    judge the contents which written whether bigger than buffer length
    if bigger (the exceeding contents will be in the exceeding buffer)
      break current work flow, and return.

Signed-off-by: Chen Gang 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman